=================================================================== RCS file: /cvs/mandoc/roff.c,v retrieving revision 1.214 retrieving revision 1.372 diff -u -p -r1.214 -r1.372 --- mandoc/roff.c 2014/06/29 23:26:00 1.214 +++ mandoc/roff.c 2020/04/03 11:35:01 1.372 @@ -1,7 +1,7 @@ -/* $Id: roff.c,v 1.214 2014/06/29 23:26:00 schwarze Exp $ */ +/* $Id: roff.c,v 1.372 2020/04/03 11:35:01 schwarze Exp $ */ /* - * Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons - * Copyright (c) 2010-2014 Ingo Schwarze + * Copyright (c) 2010-2015, 2017-2020 Ingo Schwarze + * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -14,70 +14,54 @@ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Implementation of the roff(7) parser for mandoc(1). */ -#ifdef HAVE_CONFIG_H #include "config.h" -#endif +#include + #include #include +#include +#include +#include #include #include #include -#include "mandoc.h" #include "mandoc_aux.h" -#include "libroff.h" +#include "mandoc_ohash.h" +#include "mandoc.h" +#include "roff.h" +#include "mandoc_parse.h" #include "libmandoc.h" +#include "roff_int.h" +#include "tbl_parse.h" +#include "eqn_parse.h" -/* Maximum number of nested if-else conditionals. */ -#define RSTACK_MAX 128 +/* + * ASCII_ESC is used to signal from roff_getarg() to roff_expand() + * that an escape sequence resulted from copy-in processing and + * needs to be checked or interpolated. As it is used nowhere + * else, it is defined here rather than in a header file. + */ +#define ASCII_ESC 27 /* Maximum number of string expansions per line, to break infinite loops. */ #define EXPAND_LIMIT 1000 -enum rofft { - ROFF_ad, - ROFF_am, - ROFF_ami, - ROFF_am1, - ROFF_as, - ROFF_cc, - ROFF_ce, - ROFF_de, - ROFF_dei, - ROFF_de1, - ROFF_ds, - ROFF_el, - ROFF_fam, - ROFF_hw, - ROFF_hy, - ROFF_ie, - ROFF_if, - ROFF_ig, - ROFF_it, - ROFF_ne, - ROFF_nh, - ROFF_nr, - ROFF_ns, - ROFF_ps, - ROFF_rm, - ROFF_rr, - ROFF_so, - ROFF_ta, - ROFF_tr, - ROFF_Dd, - ROFF_TH, - ROFF_TS, - ROFF_TE, - ROFF_T_, - ROFF_EQ, - ROFF_EN, - ROFF_cblock, - ROFF_USERDEF, - ROFF_MAX -}; +/* Types of definitions of macros and strings. */ +#define ROFFDEF_USER (1 << 1) /* User-defined. */ +#define ROFFDEF_PRE (1 << 2) /* Predefined. */ +#define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */ +#define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */ +#define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \ + ROFFDEF_REN | ROFFDEF_STD) +#define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */ +/* --- data types --------------------------------------------------------- */ + /* * An incredibly-simple string buffer. */ @@ -101,59 +85,86 @@ struct roffkv { struct roffreg { struct roffstr key; int val; + int step; struct roffreg *next; }; +/* + * Association of request and macro names with token IDs. + */ +struct roffreq { + enum roff_tok tok; + char name[]; +}; + +/* + * A macro processing context. + * More than one is needed when macro calls are nested. + */ +struct mctx { + char **argv; + int argc; + int argsz; +}; + struct roff { - struct mparse *parse; /* parse point */ - int options; /* parse options */ + struct roff_man *man; /* mdoc or man parser */ struct roffnode *last; /* leaf of stack */ - int rstack[RSTACK_MAX]; /* stack of !`ie' rules */ - char control; /* control character */ - int rstackpos; /* position in rstack */ + struct mctx *mstack; /* stack of macro contexts */ + int *rstack; /* stack of inverted `ie' values */ + struct ohash *reqtab; /* request lookup table */ struct roffreg *regtab; /* number registers */ struct roffkv *strtab; /* user-defined strings & macros */ + struct roffkv *rentab; /* renamed strings & macros */ struct roffkv *xmbtab; /* multi-byte trans table (`tr') */ struct roffstr *xtab; /* single-byte trans table (`tr') */ const char *current_string; /* value of last called user macro */ struct tbl_node *first_tbl; /* first table parsed */ struct tbl_node *last_tbl; /* last table parsed */ struct tbl_node *tbl; /* current table being parsed */ - struct eqn_node *last_eqn; /* last equation parsed */ - struct eqn_node *first_eqn; /* first equation parsed */ - struct eqn_node *eqn; /* current equation being parsed */ + struct eqn_node *last_eqn; /* equation parser */ + struct eqn_node *eqn; /* active equation parser */ + int eqn_inline; /* current equation is inline */ + int options; /* parse options */ + int mstacksz; /* current size of mstack */ + int mstackpos; /* position in mstack */ + int rstacksz; /* current size limit of rstack */ + int rstackpos; /* position in rstack */ + int format; /* current file in mdoc or man format */ + char control; /* control character */ + char escape; /* escape character */ }; +/* + * A macro definition, condition, or ignored block. + */ struct roffnode { - enum rofft tok; /* type of node */ + enum roff_tok tok; /* type of node */ struct roffnode *parent; /* up one in stack */ int line; /* parse line */ int col; /* parse col */ char *name; /* node name, e.g. macro name */ - char *end; /* end-rules: custom token */ - int endspan; /* end-rules: next-line or infty */ - int rule; /* current evaluation rule */ + char *end; /* custom end macro of the block */ + int endspan; /* scope to: 1=eol 2=next line -1=\} */ + int rule; /* content is: 1=evaluated 0=skipped */ }; #define ROFF_ARGS struct roff *r, /* parse ctx */ \ - enum rofft tok, /* tok of macro */ \ - char **bufp, /* input buffer */ \ - size_t *szp, /* size of input buffer */ \ + enum roff_tok tok, /* tok of macro */ \ + struct buf *buf, /* input buffer */ \ int ln, /* parse line */ \ int ppos, /* original pos in buffer */ \ int pos, /* current pos in buffer */ \ int *offs /* reset offset of buffer data */ -typedef enum rofferr (*roffproc)(ROFF_ARGS); +typedef int (*roffproc)(ROFF_ARGS); struct roffmac { - const char *name; /* macro name */ roffproc proc; /* process new macro */ roffproc text; /* process as child text of macro */ roffproc sub; /* process as child of macro */ int flags; #define ROFFMAC_STRUCT (1 << 0) /* always interpret */ - struct roffmac *next; }; struct predef { @@ -164,227 +175,537 @@ struct predef { #define PREDEF(__name, __str) \ { (__name), (__str) }, -static enum rofft roffhash_find(const char *, size_t); -static void roffhash_init(void); -static void roffnode_cleanscope(struct roff *); -static void roffnode_pop(struct roff *); -static void roffnode_push(struct roff *, enum rofft, +/* --- function prototypes ------------------------------------------------ */ + +static int roffnode_cleanscope(struct roff *); +static int roffnode_pop(struct roff *); +static void roffnode_push(struct roff *, enum roff_tok, const char *, int, int); -static enum rofferr roff_block(ROFF_ARGS); -static enum rofferr roff_block_text(ROFF_ARGS); -static enum rofferr roff_block_sub(ROFF_ARGS); -static enum rofferr roff_cblock(ROFF_ARGS); -static enum rofferr roff_cc(ROFF_ARGS); -static void roff_ccond(struct roff *, int, int); -static enum rofferr roff_cond(ROFF_ARGS); -static enum rofferr roff_cond_text(ROFF_ARGS); -static enum rofferr roff_cond_sub(ROFF_ARGS); -static enum rofferr roff_ds(ROFF_ARGS); -static int roff_evalcond(const char *, int *); -static int roff_evalnum(const char *, int *, int *, int); -static int roff_evalpar(const char *, int *, int *); +static void roff_addtbl(struct roff_man *, int, struct tbl_node *); +static int roff_als(ROFF_ARGS); +static int roff_block(ROFF_ARGS); +static int roff_block_text(ROFF_ARGS); +static int roff_block_sub(ROFF_ARGS); +static int roff_break(ROFF_ARGS); +static int roff_cblock(ROFF_ARGS); +static int roff_cc(ROFF_ARGS); +static int roff_ccond(struct roff *, int, int); +static int roff_char(ROFF_ARGS); +static int roff_cond(ROFF_ARGS); +static int roff_cond_text(ROFF_ARGS); +static int roff_cond_sub(ROFF_ARGS); +static int roff_ds(ROFF_ARGS); +static int roff_ec(ROFF_ARGS); +static int roff_eo(ROFF_ARGS); +static int roff_eqndelim(struct roff *, struct buf *, int); +static int roff_evalcond(struct roff *, int, char *, int *); +static int roff_evalnum(struct roff *, int, + const char *, int *, int *, int); +static int roff_evalpar(struct roff *, int, + const char *, int *, int *, int); static int roff_evalstrcond(const char *, int *); +static int roff_expand(struct roff *, struct buf *, + int, int, char); static void roff_free1(struct roff *); static void roff_freereg(struct roffreg *); static void roff_freestr(struct roffkv *); static size_t roff_getname(struct roff *, char **, int, int); -static int roff_getnum(const char *, int *, int *); +static int roff_getnum(const char *, int *, int *, int); static int roff_getop(const char *, int *, char *); -static int roff_getregn(const struct roff *, +static int roff_getregn(struct roff *, + const char *, size_t, char); +static int roff_getregro(const struct roff *, + const char *name); +static const char *roff_getstrn(struct roff *, + const char *, size_t, int *); +static int roff_hasregn(const struct roff *, const char *, size_t); -static int roff_getregro(const char *name); -static const char *roff_getstrn(const struct roff *, - const char *, size_t); -static enum rofferr roff_it(ROFF_ARGS); -static enum rofferr roff_line_ignore(ROFF_ARGS); -static enum rofferr roff_nr(ROFF_ARGS); -static void roff_openeqn(struct roff *, const char *, - int, int, const char *); -static enum rofft roff_parse(struct roff *, char *, int *, +static int roff_insec(ROFF_ARGS); +static int roff_it(ROFF_ARGS); +static int roff_line_ignore(ROFF_ARGS); +static void roff_man_alloc1(struct roff_man *); +static void roff_man_free1(struct roff_man *); +static int roff_manyarg(ROFF_ARGS); +static int roff_noarg(ROFF_ARGS); +static int roff_nop(ROFF_ARGS); +static int roff_nr(ROFF_ARGS); +static int roff_onearg(ROFF_ARGS); +static enum roff_tok roff_parse(struct roff *, char *, int *, int, int); -static enum rofferr roff_parsetext(char **, size_t *, int, int *); -static enum rofferr roff_res(struct roff *, - char **, size_t *, int, int); -static enum rofferr roff_rm(ROFF_ARGS); -static enum rofferr roff_rr(ROFF_ARGS); +static int roff_parsetext(struct roff *, struct buf *, + int, int *); +static int roff_renamed(ROFF_ARGS); +static int roff_return(ROFF_ARGS); +static int roff_rm(ROFF_ARGS); +static int roff_rn(ROFF_ARGS); +static int roff_rr(ROFF_ARGS); +static void roff_setregn(struct roff *, const char *, + size_t, int, char, int); static void roff_setstr(struct roff *, const char *, const char *, int); static void roff_setstrn(struct roffkv **, const char *, size_t, const char *, size_t, int); -static enum rofferr roff_so(ROFF_ARGS); -static enum rofferr roff_tr(ROFF_ARGS); -static enum rofferr roff_Dd(ROFF_ARGS); -static enum rofferr roff_TH(ROFF_ARGS); -static enum rofferr roff_TE(ROFF_ARGS); -static enum rofferr roff_TS(ROFF_ARGS); -static enum rofferr roff_EQ(ROFF_ARGS); -static enum rofferr roff_EN(ROFF_ARGS); -static enum rofferr roff_T_(ROFF_ARGS); -static enum rofferr roff_userdef(ROFF_ARGS); +static int roff_shift(ROFF_ARGS); +static int roff_so(ROFF_ARGS); +static int roff_tr(ROFF_ARGS); +static int roff_Dd(ROFF_ARGS); +static int roff_TE(ROFF_ARGS); +static int roff_TS(ROFF_ARGS); +static int roff_EQ(ROFF_ARGS); +static int roff_EN(ROFF_ARGS); +static int roff_T_(ROFF_ARGS); +static int roff_unsupp(ROFF_ARGS); +static int roff_userdef(ROFF_ARGS); -/* See roffhash_find() */ +/* --- constant data ------------------------------------------------------ */ -#define ASCII_HI 126 -#define ASCII_LO 33 -#define HASHWIDTH (ASCII_HI - ASCII_LO + 1) +#define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */ +#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */ -static struct roffmac *hash[HASHWIDTH]; - -static struct roffmac roffs[ROFF_MAX] = { - { "ad", roff_line_ignore, NULL, NULL, 0, NULL }, - { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL }, - { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL }, - { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, - { "as", roff_ds, NULL, NULL, 0, NULL }, - { "cc", roff_cc, NULL, NULL, 0, NULL }, - { "ce", roff_line_ignore, NULL, NULL, 0, NULL }, - { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL }, - { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL }, - { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, - { "ds", roff_ds, NULL, NULL, 0, NULL }, - { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, - { "fam", roff_line_ignore, NULL, NULL, 0, NULL }, - { "hw", roff_line_ignore, NULL, NULL, 0, NULL }, - { "hy", roff_line_ignore, NULL, NULL, 0, NULL }, - { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, - { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, - { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL }, - { "it", roff_it, NULL, NULL, 0, NULL }, - { "ne", roff_line_ignore, NULL, NULL, 0, NULL }, - { "nh", roff_line_ignore, NULL, NULL, 0, NULL }, - { "nr", roff_nr, NULL, NULL, 0, NULL }, - { "ns", roff_line_ignore, NULL, NULL, 0, NULL }, - { "ps", roff_line_ignore, NULL, NULL, 0, NULL }, - { "rm", roff_rm, NULL, NULL, 0, NULL }, - { "rr", roff_rr, NULL, NULL, 0, NULL }, - { "so", roff_so, NULL, NULL, 0, NULL }, - { "ta", roff_line_ignore, NULL, NULL, 0, NULL }, - { "tr", roff_tr, NULL, NULL, 0, NULL }, - { "Dd", roff_Dd, NULL, NULL, 0, NULL }, - { "TH", roff_TH, NULL, NULL, 0, NULL }, - { "TS", roff_TS, NULL, NULL, 0, NULL }, - { "TE", roff_TE, NULL, NULL, 0, NULL }, - { "T&", roff_T_, NULL, NULL, 0, NULL }, - { "EQ", roff_EQ, NULL, NULL, 0, NULL }, - { "EN", roff_EN, NULL, NULL, 0, NULL }, - { ".", roff_cblock, NULL, NULL, 0, NULL }, - { NULL, roff_userdef, NULL, NULL, 0, NULL }, +const char *__roff_name[MAN_MAX + 1] = { + "br", "ce", "fi", "ft", + "ll", "mc", "nf", + "po", "rj", "sp", + "ta", "ti", NULL, + "ab", "ad", "af", "aln", + "als", "am", "am1", "ami", + "ami1", "as", "as1", "asciify", + "backtrace", "bd", "bleedat", "blm", + "box", "boxa", "bp", "BP", + "break", "breakchar", "brnl", "brp", + "brpnl", "c2", "cc", + "cf", "cflags", "ch", "char", + "chop", "class", "close", "CL", + "color", "composite", "continue", "cp", + "cropat", "cs", "cu", "da", + "dch", "Dd", "de", "de1", + "defcolor", "dei", "dei1", "device", + "devicem", "di", "do", "ds", + "ds1", "dwh", "dt", "ec", + "ecr", "ecs", "el", "em", + "EN", "eo", "EP", "EQ", + "errprint", "ev", "evc", "ex", + "fallback", "fam", "fc", "fchar", + "fcolor", "fdeferlig", "feature", "fkern", + "fl", "flig", "fp", "fps", + "fschar", "fspacewidth", "fspecial", "ftr", + "fzoom", "gcolor", "hc", "hcode", + "hidechar", "hla", "hlm", "hpf", + "hpfa", "hpfcode", "hw", "hy", + "hylang", "hylen", "hym", "hypp", + "hys", "ie", "if", "ig", + "index", "it", "itc", "IX", + "kern", "kernafter", "kernbefore", "kernpair", + "lc", "lc_ctype", "lds", "length", + "letadj", "lf", "lg", "lhang", + "linetabs", "lnr", "lnrf", "lpfx", + "ls", "lsm", "lt", + "mediasize", "minss", "mk", "mso", + "na", "ne", "nh", "nhychar", + "nm", "nn", "nop", "nr", + "nrf", "nroff", "ns", "nx", + "open", "opena", "os", "output", + "padj", "papersize", "pc", "pev", + "pi", "PI", "pl", "pm", + "pn", "pnr", "ps", + "psbb", "pshape", "pso", "ptr", + "pvs", "rchar", "rd", "recursionlimit", + "return", "rfschar", "rhang", + "rm", "rn", "rnn", "rr", + "rs", "rt", "schar", "sentchar", + "shc", "shift", "sizes", "so", + "spacewidth", "special", "spreadwarn", "ss", + "sty", "substring", "sv", "sy", + "T&", "tc", "TE", + "TH", "tkf", "tl", + "tm", "tm1", "tmc", "tr", + "track", "transchar", "trf", "trimat", + "trin", "trnt", "troff", "TS", + "uf", "ul", "unformat", "unwatch", + "unwatchn", "vpt", "vs", "warn", + "warnscale", "watch", "watchlength", "watchn", + "wh", "while", "write", "writec", + "writem", "xflag", ".", NULL, + NULL, "text", + "Dd", "Dt", "Os", "Sh", + "Ss", "Pp", "D1", "Dl", + "Bd", "Ed", "Bl", "El", + "It", "Ad", "An", "Ap", + "Ar", "Cd", "Cm", "Dv", + "Er", "Ev", "Ex", "Fa", + "Fd", "Fl", "Fn", "Ft", + "Ic", "In", "Li", "Nd", + "Nm", "Op", "Ot", "Pa", + "Rv", "St", "Va", "Vt", + "Xr", "%A", "%B", "%D", + "%I", "%J", "%N", "%O", + "%P", "%R", "%T", "%V", + "Ac", "Ao", "Aq", "At", + "Bc", "Bf", "Bo", "Bq", + "Bsx", "Bx", "Db", "Dc", + "Do", "Dq", "Ec", "Ef", + "Em", "Eo", "Fx", "Ms", + "No", "Ns", "Nx", "Ox", + "Pc", "Pf", "Po", "Pq", + "Qc", "Ql", "Qo", "Qq", + "Re", "Rs", "Sc", "So", + "Sq", "Sm", "Sx", "Sy", + "Tn", "Ux", "Xc", "Xo", + "Fo", "Fc", "Oo", "Oc", + "Bk", "Ek", "Bt", "Hf", + "Fr", "Ud", "Lb", "Lp", + "Lk", "Mt", "Brq", "Bro", + "Brc", "%C", "Es", "En", + "Dx", "%Q", "%U", "Ta", + "Tg", NULL, + "TH", "SH", "SS", "TP", + "TQ", + "LP", "PP", "P", "IP", + "HP", "SM", "SB", "BI", + "IB", "BR", "RB", "R", + "B", "I", "IR", "RI", + "RE", "RS", "DT", "UC", + "PD", "AT", "in", + "SY", "YS", "OP", + "EX", "EE", "UR", + "UE", "MT", "ME", NULL }; +const char *const *roff_name = __roff_name; -/* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */ -const char *const __mdoc_reserved[] = { - "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At", - "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq", - "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx", - "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq", - "Dt", "Dv", "Dx", "D1", - "Ec", "Ed", "Ef", "Ek", "El", "Em", - "En", "Eo", "Er", "Es", "Ev", "Ex", - "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx", - "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp", - "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx", - "Oc", "Oo", "Op", "Os", "Ot", "Ox", - "Pa", "Pc", "Pf", "Po", "Pp", "Pq", - "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv", - "Sc", "Sh", "Sm", "So", "Sq", - "Ss", "St", "Sx", "Sy", - "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr", - "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O", - "%P", "%Q", "%R", "%T", "%U", "%V", - NULL +static struct roffmac roffs[TOKEN_NONE] = { + { roff_noarg, NULL, NULL, 0 }, /* br */ + { roff_onearg, NULL, NULL, 0 }, /* ce */ + { roff_noarg, NULL, NULL, 0 }, /* fi */ + { roff_onearg, NULL, NULL, 0 }, /* ft */ + { roff_onearg, NULL, NULL, 0 }, /* ll */ + { roff_onearg, NULL, NULL, 0 }, /* mc */ + { roff_noarg, NULL, NULL, 0 }, /* nf */ + { roff_onearg, NULL, NULL, 0 }, /* po */ + { roff_onearg, NULL, NULL, 0 }, /* rj */ + { roff_onearg, NULL, NULL, 0 }, /* sp */ + { roff_manyarg, NULL, NULL, 0 }, /* ta */ + { roff_onearg, NULL, NULL, 0 }, /* ti */ + { NULL, NULL, NULL, 0 }, /* ROFF_MAX */ + { roff_unsupp, NULL, NULL, 0 }, /* ab */ + { roff_line_ignore, NULL, NULL, 0 }, /* ad */ + { roff_line_ignore, NULL, NULL, 0 }, /* af */ + { roff_unsupp, NULL, NULL, 0 }, /* aln */ + { roff_als, NULL, NULL, 0 }, /* als */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */ + { roff_ds, NULL, NULL, 0 }, /* as */ + { roff_ds, NULL, NULL, 0 }, /* as1 */ + { roff_unsupp, NULL, NULL, 0 }, /* asciify */ + { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */ + { roff_line_ignore, NULL, NULL, 0 }, /* bd */ + { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */ + { roff_unsupp, NULL, NULL, 0 }, /* blm */ + { roff_unsupp, NULL, NULL, 0 }, /* box */ + { roff_unsupp, NULL, NULL, 0 }, /* boxa */ + { roff_line_ignore, NULL, NULL, 0 }, /* bp */ + { roff_unsupp, NULL, NULL, 0 }, /* BP */ + { roff_break, NULL, NULL, 0 }, /* break */ + { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */ + { roff_line_ignore, NULL, NULL, 0 }, /* brnl */ + { roff_noarg, NULL, NULL, 0 }, /* brp */ + { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */ + { roff_unsupp, NULL, NULL, 0 }, /* c2 */ + { roff_cc, NULL, NULL, 0 }, /* cc */ + { roff_insec, NULL, NULL, 0 }, /* cf */ + { roff_line_ignore, NULL, NULL, 0 }, /* cflags */ + { roff_line_ignore, NULL, NULL, 0 }, /* ch */ + { roff_char, NULL, NULL, 0 }, /* char */ + { roff_unsupp, NULL, NULL, 0 }, /* chop */ + { roff_line_ignore, NULL, NULL, 0 }, /* class */ + { roff_insec, NULL, NULL, 0 }, /* close */ + { roff_unsupp, NULL, NULL, 0 }, /* CL */ + { roff_line_ignore, NULL, NULL, 0 }, /* color */ + { roff_unsupp, NULL, NULL, 0 }, /* composite */ + { roff_unsupp, NULL, NULL, 0 }, /* continue */ + { roff_line_ignore, NULL, NULL, 0 }, /* cp */ + { roff_line_ignore, NULL, NULL, 0 }, /* cropat */ + { roff_line_ignore, NULL, NULL, 0 }, /* cs */ + { roff_line_ignore, NULL, NULL, 0 }, /* cu */ + { roff_unsupp, NULL, NULL, 0 }, /* da */ + { roff_unsupp, NULL, NULL, 0 }, /* dch */ + { roff_Dd, NULL, NULL, 0 }, /* Dd */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */ + { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */ + { roff_unsupp, NULL, NULL, 0 }, /* device */ + { roff_unsupp, NULL, NULL, 0 }, /* devicem */ + { roff_unsupp, NULL, NULL, 0 }, /* di */ + { roff_unsupp, NULL, NULL, 0 }, /* do */ + { roff_ds, NULL, NULL, 0 }, /* ds */ + { roff_ds, NULL, NULL, 0 }, /* ds1 */ + { roff_unsupp, NULL, NULL, 0 }, /* dwh */ + { roff_unsupp, NULL, NULL, 0 }, /* dt */ + { roff_ec, NULL, NULL, 0 }, /* ec */ + { roff_unsupp, NULL, NULL, 0 }, /* ecr */ + { roff_unsupp, NULL, NULL, 0 }, /* ecs */ + { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */ + { roff_unsupp, NULL, NULL, 0 }, /* em */ + { roff_EN, NULL, NULL, 0 }, /* EN */ + { roff_eo, NULL, NULL, 0 }, /* eo */ + { roff_unsupp, NULL, NULL, 0 }, /* EP */ + { roff_EQ, NULL, NULL, 0 }, /* EQ */ + { roff_line_ignore, NULL, NULL, 0 }, /* errprint */ + { roff_unsupp, NULL, NULL, 0 }, /* ev */ + { roff_unsupp, NULL, NULL, 0 }, /* evc */ + { roff_unsupp, NULL, NULL, 0 }, /* ex */ + { roff_line_ignore, NULL, NULL, 0 }, /* fallback */ + { roff_line_ignore, NULL, NULL, 0 }, /* fam */ + { roff_unsupp, NULL, NULL, 0 }, /* fc */ + { roff_unsupp, NULL, NULL, 0 }, /* fchar */ + { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */ + { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */ + { roff_line_ignore, NULL, NULL, 0 }, /* feature */ + { roff_line_ignore, NULL, NULL, 0 }, /* fkern */ + { roff_line_ignore, NULL, NULL, 0 }, /* fl */ + { roff_line_ignore, NULL, NULL, 0 }, /* flig */ + { roff_line_ignore, NULL, NULL, 0 }, /* fp */ + { roff_line_ignore, NULL, NULL, 0 }, /* fps */ + { roff_unsupp, NULL, NULL, 0 }, /* fschar */ + { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */ + { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */ + { roff_line_ignore, NULL, NULL, 0 }, /* ftr */ + { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */ + { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */ + { roff_line_ignore, NULL, NULL, 0 }, /* hc */ + { roff_line_ignore, NULL, NULL, 0 }, /* hcode */ + { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */ + { roff_line_ignore, NULL, NULL, 0 }, /* hla */ + { roff_line_ignore, NULL, NULL, 0 }, /* hlm */ + { roff_line_ignore, NULL, NULL, 0 }, /* hpf */ + { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */ + { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */ + { roff_line_ignore, NULL, NULL, 0 }, /* hw */ + { roff_line_ignore, NULL, NULL, 0 }, /* hy */ + { roff_line_ignore, NULL, NULL, 0 }, /* hylang */ + { roff_line_ignore, NULL, NULL, 0 }, /* hylen */ + { roff_line_ignore, NULL, NULL, 0 }, /* hym */ + { roff_line_ignore, NULL, NULL, 0 }, /* hypp */ + { roff_line_ignore, NULL, NULL, 0 }, /* hys */ + { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */ + { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */ + { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */ + { roff_unsupp, NULL, NULL, 0 }, /* index */ + { roff_it, NULL, NULL, 0 }, /* it */ + { roff_unsupp, NULL, NULL, 0 }, /* itc */ + { roff_line_ignore, NULL, NULL, 0 }, /* IX */ + { roff_line_ignore, NULL, NULL, 0 }, /* kern */ + { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */ + { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */ + { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */ + { roff_unsupp, NULL, NULL, 0 }, /* lc */ + { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */ + { roff_unsupp, NULL, NULL, 0 }, /* lds */ + { roff_unsupp, NULL, NULL, 0 }, /* length */ + { roff_line_ignore, NULL, NULL, 0 }, /* letadj */ + { roff_insec, NULL, NULL, 0 }, /* lf */ + { roff_line_ignore, NULL, NULL, 0 }, /* lg */ + { roff_line_ignore, NULL, NULL, 0 }, /* lhang */ + { roff_unsupp, NULL, NULL, 0 }, /* linetabs */ + { roff_unsupp, NULL, NULL, 0 }, /* lnr */ + { roff_unsupp, NULL, NULL, 0 }, /* lnrf */ + { roff_unsupp, NULL, NULL, 0 }, /* lpfx */ + { roff_line_ignore, NULL, NULL, 0 }, /* ls */ + { roff_unsupp, NULL, NULL, 0 }, /* lsm */ + { roff_line_ignore, NULL, NULL, 0 }, /* lt */ + { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */ + { roff_line_ignore, NULL, NULL, 0 }, /* minss */ + { roff_line_ignore, NULL, NULL, 0 }, /* mk */ + { roff_insec, NULL, NULL, 0 }, /* mso */ + { roff_line_ignore, NULL, NULL, 0 }, /* na */ + { roff_line_ignore, NULL, NULL, 0 }, /* ne */ + { roff_line_ignore, NULL, NULL, 0 }, /* nh */ + { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */ + { roff_unsupp, NULL, NULL, 0 }, /* nm */ + { roff_unsupp, NULL, NULL, 0 }, /* nn */ + { roff_nop, NULL, NULL, 0 }, /* nop */ + { roff_nr, NULL, NULL, 0 }, /* nr */ + { roff_unsupp, NULL, NULL, 0 }, /* nrf */ + { roff_line_ignore, NULL, NULL, 0 }, /* nroff */ + { roff_line_ignore, NULL, NULL, 0 }, /* ns */ + { roff_insec, NULL, NULL, 0 }, /* nx */ + { roff_insec, NULL, NULL, 0 }, /* open */ + { roff_insec, NULL, NULL, 0 }, /* opena */ + { roff_line_ignore, NULL, NULL, 0 }, /* os */ + { roff_unsupp, NULL, NULL, 0 }, /* output */ + { roff_line_ignore, NULL, NULL, 0 }, /* padj */ + { roff_line_ignore, NULL, NULL, 0 }, /* papersize */ + { roff_line_ignore, NULL, NULL, 0 }, /* pc */ + { roff_line_ignore, NULL, NULL, 0 }, /* pev */ + { roff_insec, NULL, NULL, 0 }, /* pi */ + { roff_unsupp, NULL, NULL, 0 }, /* PI */ + { roff_line_ignore, NULL, NULL, 0 }, /* pl */ + { roff_line_ignore, NULL, NULL, 0 }, /* pm */ + { roff_line_ignore, NULL, NULL, 0 }, /* pn */ + { roff_line_ignore, NULL, NULL, 0 }, /* pnr */ + { roff_line_ignore, NULL, NULL, 0 }, /* ps */ + { roff_unsupp, NULL, NULL, 0 }, /* psbb */ + { roff_unsupp, NULL, NULL, 0 }, /* pshape */ + { roff_insec, NULL, NULL, 0 }, /* pso */ + { roff_line_ignore, NULL, NULL, 0 }, /* ptr */ + { roff_line_ignore, NULL, NULL, 0 }, /* pvs */ + { roff_unsupp, NULL, NULL, 0 }, /* rchar */ + { roff_line_ignore, NULL, NULL, 0 }, /* rd */ + { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */ + { roff_return, NULL, NULL, 0 }, /* return */ + { roff_unsupp, NULL, NULL, 0 }, /* rfschar */ + { roff_line_ignore, NULL, NULL, 0 }, /* rhang */ + { roff_rm, NULL, NULL, 0 }, /* rm */ + { roff_rn, NULL, NULL, 0 }, /* rn */ + { roff_unsupp, NULL, NULL, 0 }, /* rnn */ + { roff_rr, NULL, NULL, 0 }, /* rr */ + { roff_line_ignore, NULL, NULL, 0 }, /* rs */ + { roff_line_ignore, NULL, NULL, 0 }, /* rt */ + { roff_unsupp, NULL, NULL, 0 }, /* schar */ + { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */ + { roff_line_ignore, NULL, NULL, 0 }, /* shc */ + { roff_shift, NULL, NULL, 0 }, /* shift */ + { roff_line_ignore, NULL, NULL, 0 }, /* sizes */ + { roff_so, NULL, NULL, 0 }, /* so */ + { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */ + { roff_line_ignore, NULL, NULL, 0 }, /* special */ + { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */ + { roff_line_ignore, NULL, NULL, 0 }, /* ss */ + { roff_line_ignore, NULL, NULL, 0 }, /* sty */ + { roff_unsupp, NULL, NULL, 0 }, /* substring */ + { roff_line_ignore, NULL, NULL, 0 }, /* sv */ + { roff_insec, NULL, NULL, 0 }, /* sy */ + { roff_T_, NULL, NULL, 0 }, /* T& */ + { roff_unsupp, NULL, NULL, 0 }, /* tc */ + { roff_TE, NULL, NULL, 0 }, /* TE */ + { roff_Dd, NULL, NULL, 0 }, /* TH */ + { roff_line_ignore, NULL, NULL, 0 }, /* tkf */ + { roff_unsupp, NULL, NULL, 0 }, /* tl */ + { roff_line_ignore, NULL, NULL, 0 }, /* tm */ + { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */ + { roff_line_ignore, NULL, NULL, 0 }, /* tmc */ + { roff_tr, NULL, NULL, 0 }, /* tr */ + { roff_line_ignore, NULL, NULL, 0 }, /* track */ + { roff_line_ignore, NULL, NULL, 0 }, /* transchar */ + { roff_insec, NULL, NULL, 0 }, /* trf */ + { roff_line_ignore, NULL, NULL, 0 }, /* trimat */ + { roff_unsupp, NULL, NULL, 0 }, /* trin */ + { roff_unsupp, NULL, NULL, 0 }, /* trnt */ + { roff_line_ignore, NULL, NULL, 0 }, /* troff */ + { roff_TS, NULL, NULL, 0 }, /* TS */ + { roff_line_ignore, NULL, NULL, 0 }, /* uf */ + { roff_line_ignore, NULL, NULL, 0 }, /* ul */ + { roff_unsupp, NULL, NULL, 0 }, /* unformat */ + { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */ + { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */ + { roff_line_ignore, NULL, NULL, 0 }, /* vpt */ + { roff_line_ignore, NULL, NULL, 0 }, /* vs */ + { roff_line_ignore, NULL, NULL, 0 }, /* warn */ + { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */ + { roff_line_ignore, NULL, NULL, 0 }, /* watch */ + { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */ + { roff_line_ignore, NULL, NULL, 0 }, /* watchn */ + { roff_unsupp, NULL, NULL, 0 }, /* wh */ + { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/ + { roff_insec, NULL, NULL, 0 }, /* write */ + { roff_insec, NULL, NULL, 0 }, /* writec */ + { roff_insec, NULL, NULL, 0 }, /* writem */ + { roff_line_ignore, NULL, NULL, 0 }, /* xflag */ + { roff_cblock, NULL, NULL, 0 }, /* . */ + { roff_renamed, NULL, NULL, 0 }, + { roff_userdef, NULL, NULL, 0 } }; -/* not currently implemented: BT DE DS ME MT PT SY TQ YS */ -const char *const __man_reserved[] = { - "AT", "B", "BI", "BR", "DT", - "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR", - "LP", "OP", "P", "PD", "PP", - "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS", - "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR", - NULL -}; - /* Array of injected predefined strings. */ #define PREDEFS_MAX 38 static const struct predef predefs[PREDEFS_MAX] = { #include "predefs.in" }; -/* See roffhash_find() */ -#define ROFF_HASH(p) (p[0] - ASCII_LO) - +static int roffce_lines; /* number of input lines to center */ +static struct roff_node *roffce_node; /* active request */ static int roffit_lines; /* number of lines to delay */ static char *roffit_macro; /* nil-terminated macro line */ -static void -roffhash_init(void) +/* --- request table ------------------------------------------------------ */ + +struct ohash * +roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok) { - struct roffmac *n; - int buc, i; + struct ohash *htab; + struct roffreq *req; + enum roff_tok tok; + size_t sz; + unsigned int slot; - for (i = 0; i < (int)ROFF_USERDEF; i++) { - assert(roffs[i].name[0] >= ASCII_LO); - assert(roffs[i].name[0] <= ASCII_HI); + htab = mandoc_malloc(sizeof(*htab)); + mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name)); - buc = ROFF_HASH(roffs[i].name); - - if (NULL != (n = hash[buc])) { - for ( ; n->next; n = n->next) - /* Do nothing. */ ; - n->next = &roffs[i]; - } else - hash[buc] = &roffs[i]; + for (tok = mintok; tok < maxtok; tok++) { + if (roff_name[tok] == NULL) + continue; + sz = strlen(roff_name[tok]); + req = mandoc_malloc(sizeof(*req) + sz + 1); + req->tok = tok; + memcpy(req->name, roff_name[tok], sz + 1); + slot = ohash_qlookup(htab, req->name); + ohash_insert(htab, slot, req); } + return htab; } -/* - * Look up a roff token by its name. Returns ROFF_MAX if no macro by - * the nil-terminated string name could be found. - */ -static enum rofft -roffhash_find(const char *p, size_t s) +void +roffhash_free(struct ohash *htab) { - int buc; - struct roffmac *n; + struct roffreq *req; + unsigned int slot; - /* - * libroff has an extremely simple hashtable, for the time - * being, which simply keys on the first character, which must - * be printable, then walks a chain. It works well enough until - * optimised. - */ + if (htab == NULL) + return; + for (req = ohash_first(htab, &slot); req != NULL; + req = ohash_next(htab, &slot)) + free(req); + ohash_delete(htab); + free(htab); +} - if (p[0] < ASCII_LO || p[0] > ASCII_HI) - return(ROFF_MAX); +enum roff_tok +roffhash_find(struct ohash *htab, const char *name, size_t sz) +{ + struct roffreq *req; + const char *end; - buc = ROFF_HASH(p); - - if (NULL == (n = hash[buc])) - return(ROFF_MAX); - for ( ; n; n = n->next) - if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s]) - return((enum rofft)(n - roffs)); - - return(ROFF_MAX); + if (sz) { + end = name + sz; + req = ohash_find(htab, ohash_qlookupi(htab, name, &end)); + } else + req = ohash_find(htab, ohash_qlookup(htab, name)); + return req == NULL ? TOKEN_NONE : req->tok; } +/* --- stack of request blocks -------------------------------------------- */ + /* * Pop the current node off of the stack of roff instructions currently - * pending. + * pending. Return 1 if it is a loop or 0 otherwise. */ -static void +static int roffnode_pop(struct roff *r) { struct roffnode *p; + int inloop; - assert(r->last); p = r->last; - - r->last = r->last->parent; + inloop = p->tok == ROFF_while; + r->last = p->parent; free(p->name); free(p->end); free(p); + return inloop; } /* @@ -392,7 +713,7 @@ roffnode_pop(struct roff *r) * removed with roffnode_pop(). */ static void -roffnode_push(struct roff *r, enum rofft tok, const char *name, +roffnode_push(struct roff *r, enum roff_tok tok, const char *name, int line, int col) { struct roffnode *p; @@ -409,43 +730,41 @@ roffnode_push(struct roff *r, enum rofft tok, const ch r->last = p; } +/* --- roff parser state data management ---------------------------------- */ + static void roff_free1(struct roff *r) { - struct tbl_node *tbl; - struct eqn_node *e; int i; - while (NULL != (tbl = r->first_tbl)) { - r->first_tbl = tbl->next; - tbl_free(tbl); - } - + tbl_free(r->first_tbl); r->first_tbl = r->last_tbl = r->tbl = NULL; - while (NULL != (e = r->first_eqn)) { - r->first_eqn = e->next; - eqn_free(e); - } + eqn_free(r->last_eqn); + r->last_eqn = r->eqn = NULL; - r->first_eqn = r->last_eqn = r->eqn = NULL; + while (r->mstackpos >= 0) + roff_userret(r); while (r->last) roffnode_pop(r); - roff_freestr(r->strtab); - roff_freestr(r->xmbtab); + free (r->rstack); + r->rstack = NULL; + r->rstacksz = 0; + r->rstackpos = -1; - r->strtab = r->xmbtab = NULL; - roff_freereg(r->regtab); - r->regtab = NULL; + roff_freestr(r->strtab); + roff_freestr(r->rentab); + roff_freestr(r->xmbtab); + r->strtab = r->rentab = r->xmbtab = NULL; + if (r->xtab) for (i = 0; i < 128; i++) free(r->xtab[i].p); - free(r->xtab); r->xtab = NULL; } @@ -453,104 +772,674 @@ roff_free1(struct roff *r) void roff_reset(struct roff *r) { - roff_free1(r); - r->control = 0; + r->options |= MPARSE_COMMENT; + r->format = r->options & (MPARSE_MDOC | MPARSE_MAN); + r->control = '\0'; + r->escape = '\\'; + roffce_lines = 0; + roffce_node = NULL; + roffit_lines = 0; + roffit_macro = NULL; } void roff_free(struct roff *r) { + int i; roff_free1(r); + for (i = 0; i < r->mstacksz; i++) + free(r->mstack[i].argv); + free(r->mstack); + roffhash_free(r->reqtab); free(r); } struct roff * -roff_alloc(struct mparse *parse, int options) +roff_alloc(int options) { struct roff *r; r = mandoc_calloc(1, sizeof(struct roff)); - r->parse = parse; - r->options = options; + r->reqtab = roffhash_alloc(0, ROFF_RENAMED); + r->options = options | MPARSE_COMMENT; + r->format = options & (MPARSE_MDOC | MPARSE_MAN); + r->mstackpos = -1; r->rstackpos = -1; + r->escape = '\\'; + return r; +} - roffhash_init(); +/* --- syntax tree state data management ---------------------------------- */ - return(r); +static void +roff_man_free1(struct roff_man *man) +{ + if (man->meta.first != NULL) + roff_node_delete(man, man->meta.first); + free(man->meta.msec); + free(man->meta.vol); + free(man->meta.os); + free(man->meta.arch); + free(man->meta.title); + free(man->meta.name); + free(man->meta.date); + free(man->meta.sodest); } +void +roff_state_reset(struct roff_man *man) +{ + man->last = man->meta.first; + man->last_es = NULL; + man->flags = 0; + man->lastsec = man->lastnamed = SEC_NONE; + man->next = ROFF_NEXT_CHILD; + roff_setreg(man->roff, "nS", 0, '='); +} + +static void +roff_man_alloc1(struct roff_man *man) +{ + memset(&man->meta, 0, sizeof(man->meta)); + man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first)); + man->meta.first->type = ROFFT_ROOT; + man->meta.macroset = MACROSET_NONE; + roff_state_reset(man); +} + +void +roff_man_reset(struct roff_man *man) +{ + roff_man_free1(man); + roff_man_alloc1(man); +} + +void +roff_man_free(struct roff_man *man) +{ + roff_man_free1(man); + free(man); +} + +struct roff_man * +roff_man_alloc(struct roff *roff, const char *os_s, int quick) +{ + struct roff_man *man; + + man = mandoc_calloc(1, sizeof(*man)); + man->roff = roff; + man->os_s = os_s; + man->quick = quick; + roff_man_alloc1(man); + roff->man = man; + return man; +} + +/* --- syntax tree handling ----------------------------------------------- */ + +struct roff_node * +roff_node_alloc(struct roff_man *man, int line, int pos, + enum roff_type type, int tok) +{ + struct roff_node *n; + + n = mandoc_calloc(1, sizeof(*n)); + n->line = line; + n->pos = pos; + n->tok = tok; + n->type = type; + n->sec = man->lastsec; + + if (man->flags & MDOC_SYNOPSIS) + n->flags |= NODE_SYNPRETTY; + else + n->flags &= ~NODE_SYNPRETTY; + if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL) + n->flags |= NODE_NOFILL; + else + n->flags &= ~NODE_NOFILL; + if (man->flags & MDOC_NEWLINE) + n->flags |= NODE_LINE; + man->flags &= ~MDOC_NEWLINE; + + return n; +} + +void +roff_node_append(struct roff_man *man, struct roff_node *n) +{ + + switch (man->next) { + case ROFF_NEXT_SIBLING: + if (man->last->next != NULL) { + n->next = man->last->next; + man->last->next->prev = n; + } else + man->last->parent->last = n; + man->last->next = n; + n->prev = man->last; + n->parent = man->last->parent; + break; + case ROFF_NEXT_CHILD: + if (man->last->child != NULL) { + n->next = man->last->child; + man->last->child->prev = n; + } else + man->last->last = n; + man->last->child = n; + n->parent = man->last; + break; + default: + abort(); + } + man->last = n; + + switch (n->type) { + case ROFFT_HEAD: + n->parent->head = n; + break; + case ROFFT_BODY: + if (n->end != ENDBODY_NOT) + return; + n->parent->body = n; + break; + case ROFFT_TAIL: + n->parent->tail = n; + break; + default: + return; + } + + /* + * Copy over the normalised-data pointer of our parent. Not + * everybody has one, but copying a null pointer is fine. + */ + + n->norm = n->parent->norm; + assert(n->parent->type == ROFFT_BLOCK); +} + +void +roff_word_alloc(struct roff_man *man, int line, int pos, const char *word) +{ + struct roff_node *n; + + n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE); + n->string = roff_strdup(man->roff, word); + roff_node_append(man, n); + n->flags |= NODE_VALID | NODE_ENDED; + man->next = ROFF_NEXT_SIBLING; +} + +void +roff_word_append(struct roff_man *man, const char *word) +{ + struct roff_node *n; + char *addstr, *newstr; + + n = man->last; + addstr = roff_strdup(man->roff, word); + mandoc_asprintf(&newstr, "%s %s", n->string, addstr); + free(addstr); + free(n->string); + n->string = newstr; + man->next = ROFF_NEXT_SIBLING; +} + +void +roff_elem_alloc(struct roff_man *man, int line, int pos, int tok) +{ + struct roff_node *n; + + n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok); + roff_node_append(man, n); + man->next = ROFF_NEXT_CHILD; +} + +struct roff_node * +roff_block_alloc(struct roff_man *man, int line, int pos, int tok) +{ + struct roff_node *n; + + n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok); + roff_node_append(man, n); + man->next = ROFF_NEXT_CHILD; + return n; +} + +struct roff_node * +roff_head_alloc(struct roff_man *man, int line, int pos, int tok) +{ + struct roff_node *n; + + n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok); + roff_node_append(man, n); + man->next = ROFF_NEXT_CHILD; + return n; +} + +struct roff_node * +roff_body_alloc(struct roff_man *man, int line, int pos, int tok) +{ + struct roff_node *n; + + n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok); + roff_node_append(man, n); + man->next = ROFF_NEXT_CHILD; + return n; +} + +static void +roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl) +{ + struct roff_node *n; + struct tbl_span *span; + + if (man->meta.macroset == MACROSET_MAN) + man_breakscope(man, ROFF_TS); + while ((span = tbl_span(tbl)) != NULL) { + n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE); + n->span = span; + roff_node_append(man, n); + n->flags |= NODE_VALID | NODE_ENDED; + man->next = ROFF_NEXT_SIBLING; + } +} + +void +roff_node_unlink(struct roff_man *man, struct roff_node *n) +{ + + /* Adjust siblings. */ + + if (n->prev) + n->prev->next = n->next; + if (n->next) + n->next->prev = n->prev; + + /* Adjust parent. */ + + if (n->parent != NULL) { + if (n->parent->child == n) + n->parent->child = n->next; + if (n->parent->last == n) + n->parent->last = n->prev; + } + + /* Adjust parse point. */ + + if (man == NULL) + return; + if (man->last == n) { + if (n->prev == NULL) { + man->last = n->parent; + man->next = ROFF_NEXT_CHILD; + } else { + man->last = n->prev; + man->next = ROFF_NEXT_SIBLING; + } + } + if (man->meta.first == n) + man->meta.first = NULL; +} + +void +roff_node_relink(struct roff_man *man, struct roff_node *n) +{ + roff_node_unlink(man, n); + n->prev = n->next = NULL; + roff_node_append(man, n); +} + +void +roff_node_free(struct roff_node *n) +{ + + if (n->args != NULL) + mdoc_argv_free(n->args); + if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM) + free(n->norm); + eqn_box_free(n->eqn); + free(n->string); + free(n); +} + +void +roff_node_delete(struct roff_man *man, struct roff_node *n) +{ + + while (n->child != NULL) + roff_node_delete(man, n->child); + roff_node_unlink(man, n); + roff_node_free(n); +} + +int +roff_node_transparent(struct roff_node *n) +{ + if (n == NULL) + return 0; + if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT) + return 1; + switch (n->tok) { + case ROFF_ft: + case ROFF_ll: + case ROFF_mc: + case ROFF_po: + case ROFF_ta: + case MDOC_Db: + case MDOC_Es: + case MDOC_Sm: + case MDOC_Tg: + case MAN_DT: + case MAN_UC: + case MAN_PD: + case MAN_AT: + return 1; + default: + return 0; + } +} + +struct roff_node * +roff_node_child(struct roff_node *n) +{ + for (n = n->child; roff_node_transparent(n); n = n->next) + continue; + return n; +} + +struct roff_node * +roff_node_prev(struct roff_node *n) +{ + do { + n = n->prev; + } while (roff_node_transparent(n)); + return n; +} + +struct roff_node * +roff_node_next(struct roff_node *n) +{ + do { + n = n->next; + } while (roff_node_transparent(n)); + return n; +} + +void +deroff(char **dest, const struct roff_node *n) +{ + char *cp; + size_t sz; + + if (n->string == NULL) { + for (n = n->child; n != NULL; n = n->next) + deroff(dest, n); + return; + } + + /* Skip leading whitespace. */ + + for (cp = n->string; *cp != '\0'; cp++) { + if (cp[0] == '\\' && cp[1] != '\0' && + strchr(" %&0^|~", cp[1]) != NULL) + cp++; + else if ( ! isspace((unsigned char)*cp)) + break; + } + + /* Skip trailing backslash. */ + + sz = strlen(cp); + if (sz > 0 && cp[sz - 1] == '\\') + sz--; + + /* Skip trailing whitespace. */ + + for (; sz; sz--) + if ( ! isspace((unsigned char)cp[sz-1])) + break; + + /* Skip empty strings. */ + + if (sz == 0) + return; + + if (*dest == NULL) { + *dest = mandoc_strndup(cp, sz); + return; + } + + mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp); + free(*dest); + *dest = cp; +} + +/* --- main functions of the roff parser ---------------------------------- */ + /* - * In the current line, expand escape sequences that tend to get - * used in numerical expressions and conditional requests. - * Also check the syntax of the remaining escape sequences. + * In the current line, expand escape sequences that produce parsable + * input text. Also check the syntax of the remaining escape sequences, + * which typically produce output glyphs or change formatter state. */ -static enum rofferr -roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos) +static int +roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc) { + struct mctx *ctx; /* current macro call context */ char ubuf[24]; /* buffer to print the number */ + struct roff_node *n; /* used for header comments */ const char *start; /* start of the string to process */ char *stesc; /* start of an escape sequence ('\\') */ + const char *esct; /* type of esccape sequence */ + char *ep; /* end of comment string */ const char *stnam; /* start of the name, after "[(*" */ const char *cp; /* end of the name, e.g. before ']' */ const char *res; /* the string to be substituted */ - char *nbuf; /* new buffer to copy bufp to */ + char *nbuf; /* new buffer to copy buf->buf to */ size_t maxl; /* expected length of the escape name */ size_t naml; /* actual length of the escape name */ + size_t asz; /* length of the replacement */ + size_t rsz; /* length of the rest of the string */ + int inaml; /* length returned from mandoc_escape() */ int expand_count; /* to avoid infinite loops */ int npos; /* position in numeric expression */ - int irc; /* return code from roff_evalnum() */ + int arg_complete; /* argument not interrupted by eol */ + int quote_args; /* true for \\$@, false for \\$* */ + int done; /* no more input available */ + int deftype; /* type of definition to paste */ + int rcsid; /* kind of RCS id seen */ + enum mandocerr err; /* for escape sequence problems */ + char sign; /* increment number register */ char term; /* character terminating the escape */ + /* Search forward for comments. */ + + done = 0; + start = buf->buf + pos; + for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) { + if (stesc[0] != newesc || stesc[1] == '\0') + continue; + stesc++; + if (*stesc != '"' && *stesc != '#') + continue; + + /* Comment found, look for RCS id. */ + + rcsid = 0; + if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) { + rcsid = 1 << MANDOC_OS_OPENBSD; + cp += 8; + } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) { + rcsid = 1 << MANDOC_OS_NETBSD; + cp += 7; + } + if (cp != NULL && + isalnum((unsigned char)*cp) == 0 && + strchr(cp, '$') != NULL) { + if (r->man->meta.rcsids & rcsid) + mandoc_msg(MANDOCERR_RCS_REP, ln, + (int)(stesc - buf->buf) + 1, + "%s", stesc + 1); + r->man->meta.rcsids |= rcsid; + } + + /* Handle trailing whitespace. */ + + ep = strchr(stesc--, '\0') - 1; + if (*ep == '\n') { + done = 1; + ep--; + } + if (*ep == ' ' || *ep == '\t') + mandoc_msg(MANDOCERR_SPACE_EOL, + ln, (int)(ep - buf->buf), NULL); + + /* + * Save comments preceding the title macro + * in the syntax tree. + */ + + if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) { + while (*ep == ' ' || *ep == '\t') + ep--; + ep[1] = '\0'; + n = roff_node_alloc(r->man, + ln, stesc + 1 - buf->buf, + ROFFT_COMMENT, TOKEN_NONE); + n->string = mandoc_strdup(stesc + 2); + roff_node_append(r->man, n); + n->flags |= NODE_VALID | NODE_ENDED; + r->man->next = ROFF_NEXT_SIBLING; + } + + /* Line continuation with comment. */ + + if (stesc[1] == '#') { + *stesc = '\0'; + return ROFF_IGN | ROFF_APPEND; + } + + /* Discard normal comments. */ + + while (stesc > start && stesc[-1] == ' ' && + (stesc == start + 1 || stesc[-2] != '\\')) + stesc--; + *stesc = '\0'; + break; + } + if (stesc == start) + return ROFF_CONT; + stesc--; + + /* Notice the end of the input. */ + + if (*stesc == '\n') { + *stesc-- = '\0'; + done = 1; + } + expand_count = 0; - start = *bufp + pos; - stesc = strchr(start, '\0') - 1; - while (stesc-- > start) { + while (stesc >= start) { + if (*stesc != newesc) { - /* Search backwards for the next backslash. */ + /* + * If we have a non-standard escape character, + * escape literal backslashes because all + * processing in subsequent functions uses + * the standard escaping rules. + */ - if ('\\' != *stesc) + if (newesc != ASCII_ESC && *stesc == '\\') { + *stesc = '\0'; + buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s", + buf->buf, stesc + 1) + 1; + start = nbuf + pos; + stesc = nbuf + (stesc - buf->buf); + free(buf->buf); + buf->buf = nbuf; + } + + /* Search backwards for the next escape. */ + + stesc--; continue; + } /* If it is escaped, skip it. */ for (cp = stesc - 1; cp >= start; cp--) - if ('\\' != *cp) + if (*cp != r->escape) break; - if (0 == (stesc - cp) % 2) { - stesc = (char *)cp; + if ((stesc - cp) % 2 == 0) { + while (stesc > cp) + *stesc-- = '\\'; continue; + } else if (stesc[1] != '\0') { + *stesc = '\\'; + } else { + *stesc-- = '\0'; + if (done) + continue; + else + return ROFF_IGN | ROFF_APPEND; } /* Decide whether to expand or to check only. */ term = '\0'; cp = stesc + 1; - switch (*cp) { + if (*cp == 'E') + cp++; + esct = cp; + switch (*esct) { case '*': + case '$': res = NULL; break; case 'B': - /* FALLTHROUGH */ case 'w': term = cp[1]; /* FALLTHROUGH */ case 'n': + sign = cp[1]; + if (sign == '+' || sign == '-') + cp++; res = ubuf; break; default: - if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL)) - mandoc_msg(MANDOCERR_BADESCAPE, r->parse, - ln, (int)(stesc - *bufp), NULL); + err = MANDOCERR_OK; + switch(mandoc_escape(&cp, &stnam, &inaml)) { + case ESCAPE_SPECIAL: + if (mchars_spec2cp(stnam, inaml) >= 0) + break; + /* FALLTHROUGH */ + case ESCAPE_ERROR: + err = MANDOCERR_ESC_BAD; + break; + case ESCAPE_UNDEF: + err = MANDOCERR_ESC_UNDEF; + break; + case ESCAPE_UNSUPP: + err = MANDOCERR_ESC_UNSUPP; + break; + default: + break; + } + if (err != MANDOCERR_OK) + mandoc_msg(err, ln, (int)(stesc - buf->buf), + "%.*s", (int)(cp - stesc), stesc); + stesc--; continue; } if (EXPAND_LIMIT < ++expand_count) { - mandoc_msg(MANDOCERR_ROFFLOOP, r->parse, - ln, (int)(stesc - *bufp), NULL); - return(ROFF_IGN); + mandoc_msg(MANDOCERR_ROFFLOOP, + ln, (int)(stesc - buf->buf), NULL); + return ROFF_IGN; } /* @@ -559,7 +1448,7 @@ roff_res(struct roff *r, char **bufp, size_t *szp, int * Save a pointer to the name. */ - if ('\0' == term) { + if (term == '\0') { switch (*++cp) { case '\0': maxl = 0; @@ -585,16 +1474,34 @@ roff_res(struct roff *r, char **bufp, size_t *szp, int /* Advance to the end of the name. */ - for (naml = 0; 0 == maxl || naml < maxl; naml++, cp++) { - if ('\0' == *cp) { - mandoc_msg(MANDOCERR_BADESCAPE, r->parse, - ln, (int)(stesc - *bufp), NULL); + naml = 0; + arg_complete = 1; + while (maxl == 0 || naml < maxl) { + if (*cp == '\0') { + mandoc_msg(MANDOCERR_ESC_BAD, ln, + (int)(stesc - buf->buf), "%s", stesc); + arg_complete = 0; break; } - if (0 == maxl && *cp == term) { + if (maxl == 0 && *cp == term) { cp++; break; } + if (*cp++ != '\\' || *esct != 'w') { + naml++; + continue; + } + switch (mandoc_escape(&cp, NULL, NULL)) { + case ESCAPE_SPECIAL: + case ESCAPE_UNICODE: + case ESCAPE_NUMBERED: + case ESCAPE_UNDEF: + case ESCAPE_OVERSTRIKE: + naml++; + break; + default: + break; + } } /* @@ -602,78 +1509,297 @@ roff_res(struct roff *r, char **bufp, size_t *szp, int * undefined, resume searching for escapes. */ - switch (stesc[1]) { + switch (*esct) { case '*': - res = roff_getstrn(r, stnam, naml); + if (arg_complete) { + deftype = ROFFDEF_USER | ROFFDEF_PRE; + res = roff_getstrn(r, stnam, naml, &deftype); + + /* + * If not overriden, let \*(.T + * through to the formatters. + */ + + if (res == NULL && naml == 2 && + stnam[0] == '.' && stnam[1] == 'T') { + roff_setstrn(&r->strtab, + ".T", 2, NULL, 0, 0); + stesc--; + continue; + } + } break; + case '$': + if (r->mstackpos < 0) { + mandoc_msg(MANDOCERR_ARG_UNDEF, ln, + (int)(stesc - buf->buf), "%.3s", stesc); + break; + } + ctx = r->mstack + r->mstackpos; + npos = esct[1] - '1'; + if (npos >= 0 && npos <= 8) { + res = npos < ctx->argc ? + ctx->argv[npos] : ""; + break; + } + if (esct[1] == '*') + quote_args = 0; + else if (esct[1] == '@') + quote_args = 1; + else { + mandoc_msg(MANDOCERR_ARG_NONUM, ln, + (int)(stesc - buf->buf), "%.3s", stesc); + break; + } + asz = 0; + for (npos = 0; npos < ctx->argc; npos++) { + if (npos) + asz++; /* blank */ + if (quote_args) + asz += 2; /* quotes */ + asz += strlen(ctx->argv[npos]); + } + if (asz != 3) { + rsz = buf->sz - (stesc - buf->buf) - 3; + if (asz < 3) + memmove(stesc + asz, stesc + 3, rsz); + buf->sz += asz - 3; + nbuf = mandoc_realloc(buf->buf, buf->sz); + start = nbuf + pos; + stesc = nbuf + (stesc - buf->buf); + buf->buf = nbuf; + if (asz > 3) + memmove(stesc + asz, stesc + 3, rsz); + } + for (npos = 0; npos < ctx->argc; npos++) { + if (npos) + *stesc++ = ' '; + if (quote_args) + *stesc++ = '"'; + cp = ctx->argv[npos]; + while (*cp != '\0') + *stesc++ = *cp++; + if (quote_args) + *stesc++ = '"'; + } + continue; case 'B': npos = 0; - irc = roff_evalnum(stnam, &npos, NULL, 0); - ubuf[0] = irc && stnam + npos + 1 == cp - ? '1' : '0'; + ubuf[0] = arg_complete && + roff_evalnum(r, ln, stnam, &npos, + NULL, ROFFNUM_SCALE) && + stnam + npos + 1 == cp ? '1' : '0'; ubuf[1] = '\0'; break; case 'n': - (void)snprintf(ubuf, sizeof(ubuf), "%d", - roff_getregn(r, stnam, naml)); + if (arg_complete) + (void)snprintf(ubuf, sizeof(ubuf), "%d", + roff_getregn(r, stnam, naml, sign)); + else + ubuf[0] = '\0'; break; case 'w': + /* use even incomplete args */ (void)snprintf(ubuf, sizeof(ubuf), "%d", 24 * (int)naml); break; } - if (NULL == res) { - mandoc_msg(MANDOCERR_BADESCAPE, r->parse, - ln, (int)(stesc - *bufp), NULL); + if (res == NULL) { + if (*esct == '*') + mandoc_msg(MANDOCERR_STR_UNDEF, + ln, (int)(stesc - buf->buf), + "%.*s", (int)naml, stnam); res = ""; + } else if (buf->sz + strlen(res) > SHRT_MAX) { + mandoc_msg(MANDOCERR_ROFFLOOP, + ln, (int)(stesc - buf->buf), NULL); + return ROFF_IGN; } /* Replace the escape sequence by the string. */ *stesc = '\0'; - *szp = mandoc_asprintf(&nbuf, "%s%s%s", - *bufp, res, cp) + 1; + buf->sz = mandoc_asprintf(&nbuf, "%s%s%s", + buf->buf, res, cp) + 1; /* Prepare for the next replacement. */ start = nbuf + pos; - stesc = nbuf + (stesc - *bufp) + strlen(res); - free(*bufp); - *bufp = nbuf; + stesc = nbuf + (stesc - buf->buf) + strlen(res); + free(buf->buf); + buf->buf = nbuf; } - return(ROFF_CONT); + return ROFF_CONT; } /* - * Process text streams: - * Convert all breakable hyphens into ASCII_HYPH. - * Decrement and spring input line trap. + * Parse a quoted or unquoted roff-style request or macro argument. + * Return a pointer to the parsed argument, which is either the original + * pointer or advanced by one byte in case the argument is quoted. + * NUL-terminate the argument in place. + * Collapse pairs of quotes inside quoted arguments. + * Advance the argument pointer to the next argument, + * or to the NUL byte terminating the argument line. */ -static enum rofferr -roff_parsetext(char **bufp, size_t *szp, int pos, int *offs) +char * +roff_getarg(struct roff *r, char **cpp, int ln, int *pos) { + struct buf buf; + char *cp, *start; + int newesc, pairs, quoted, white; + + /* Quoting can only start with a new word. */ + start = *cpp; + quoted = 0; + if ('"' == *start) { + quoted = 1; + start++; + } + + newesc = pairs = white = 0; + for (cp = start; '\0' != *cp; cp++) { + + /* + * Move the following text left + * after quoted quotes and after "\\" and "\t". + */ + if (pairs) + cp[-pairs] = cp[0]; + + if ('\\' == cp[0]) { + /* + * In copy mode, translate double to single + * backslashes and backslash-t to literal tabs. + */ + switch (cp[1]) { + case 'a': + case 't': + cp[-pairs] = '\t'; + pairs++; + cp++; + break; + case '\\': + newesc = 1; + cp[-pairs] = ASCII_ESC; + pairs++; + cp++; + break; + case ' ': + /* Skip escaped blanks. */ + if (0 == quoted) + cp++; + break; + default: + break; + } + } else if (0 == quoted) { + if (' ' == cp[0]) { + /* Unescaped blanks end unquoted args. */ + white = 1; + break; + } + } else if ('"' == cp[0]) { + if ('"' == cp[1]) { + /* Quoted quotes collapse. */ + pairs++; + cp++; + } else { + /* Unquoted quotes end quoted args. */ + quoted = 2; + break; + } + } + } + + /* Quoted argument without a closing quote. */ + if (1 == quoted) + mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL); + + /* NUL-terminate this argument and move to the next one. */ + if (pairs) + cp[-pairs] = '\0'; + if ('\0' != *cp) { + *cp++ = '\0'; + while (' ' == *cp) + cp++; + } + *pos += (int)(cp - start) + (quoted ? 1 : 0); + *cpp = cp; + + if ('\0' == *cp && (white || ' ' == cp[-1])) + mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL); + + start = mandoc_strdup(start); + if (newesc == 0) + return start; + + buf.buf = start; + buf.sz = strlen(start) + 1; + buf.next = NULL; + if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) { + free(buf.buf); + buf.buf = mandoc_strdup(""); + } + return buf.buf; +} + + +/* + * Process text streams. + */ +static int +roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs) +{ size_t sz; const char *start; char *p; int isz; enum mandoc_esc esc; - start = p = *bufp + pos; + /* Spring the input line trap. */ - while ('\0' != *p) { + if (roffit_lines == 1) { + isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro); + free(buf->buf); + buf->buf = p; + buf->sz = isz + 1; + *offs = 0; + free(roffit_macro); + roffit_lines = 0; + return ROFF_REPARSE; + } else if (roffit_lines > 1) + --roffit_lines; + + if (roffce_node != NULL && buf->buf[pos] != '\0') { + if (roffce_lines < 1) { + r->man->last = roffce_node; + r->man->next = ROFF_NEXT_SIBLING; + roffce_lines = 0; + roffce_node = NULL; + } else + roffce_lines--; + } + + /* Convert all breakable hyphens into ASCII_HYPH. */ + + start = p = buf->buf + pos; + + while (*p != '\0') { sz = strcspn(p, "-\\"); p += sz; - if ('\0' == *p) + if (*p == '\0') break; - if ('\\' == *p) { + if (*p == '\\') { /* Skip over escapes. */ p++; esc = mandoc_escape((const char **)&p, NULL, NULL); - if (ESCAPE_ERROR == esc) + if (esc == ESCAPE_ERROR) break; + while (*p == '-') + p++; continue; } else if (p == start) { p++; @@ -685,67 +1811,79 @@ roff_parsetext(char **bufp, size_t *szp, int pos, int *p = ASCII_HYPH; p++; } - - /* Spring the input line trap. */ - if (1 == roffit_lines) { - isz = mandoc_asprintf(&p, "%s\n.%s", *bufp, roffit_macro); - free(*bufp); - *bufp = p; - *szp = isz + 1; - *offs = 0; - free(roffit_macro); - roffit_lines = 0; - return(ROFF_REPARSE); - } else if (1 < roffit_lines) - --roffit_lines; - return(ROFF_CONT); + return ROFF_CONT; } -enum rofferr -roff_parseln(struct roff *r, int ln, char **bufp, - size_t *szp, int pos, int *offs) +int +roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs) { - enum rofft t; - enum rofferr e; - int ppos, ctl; + enum roff_tok t; + int e; + int pos; /* parse point */ + int spos; /* saved parse point for messages */ + int ppos; /* original offset in buf->buf */ + int ctl; /* macro line (boolean) */ - /* - * Run the reserved-word filter only if we have some reserved - * words to fill in. - */ + ppos = pos = *offs; - e = roff_res(r, bufp, szp, ln, pos); - if (ROFF_IGN == e) - return(e); - assert(ROFF_CONT == e); + /* Handle in-line equation delimiters. */ - ppos = pos; - ctl = roff_getcontrol(r, *bufp, &pos); + if (r->tbl == NULL && + r->last_eqn != NULL && r->last_eqn->delim && + (r->eqn == NULL || r->eqn_inline)) { + e = roff_eqndelim(r, buf, pos); + if (e == ROFF_REPARSE) + return e; + assert(e == ROFF_CONT); + } + /* Expand some escape sequences. */ + + e = roff_expand(r, buf, ln, pos, r->escape); + if ((e & ROFF_MASK) == ROFF_IGN) + return e; + assert(e == ROFF_CONT); + + ctl = roff_getcontrol(r, buf->buf, &pos); + /* * First, if a scope is open and we're not a macro, pass the - * text through the macro's filter. If a scope isn't open and - * we're not a macro, just let it through. - * Finally, if there's an equation scope open, divert it into it - * no matter our state. + * text through the macro's filter. + * Equations process all content themselves. + * Tables process almost all content themselves, but we want + * to warn about macros before passing it there. */ - if (r->last && ! ctl) { + if (r->last != NULL && ! ctl) { t = r->last->tok; - assert(roffs[t].text); - e = (*roffs[t].text)(r, t, bufp, szp, ln, pos, pos, offs); - assert(ROFF_IGN == e || ROFF_CONT == e); - if (ROFF_CONT != e) - return(e); + e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs); + if ((e & ROFF_MASK) == ROFF_IGN) + return e; + e &= ~ROFF_MASK; + } else + e = ROFF_IGN; + if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) { + eqn_read(r->eqn, buf->buf + ppos); + return e; } - if (r->eqn) - return(eqn_read(&r->eqn, ln, *bufp, ppos, offs)); + if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) { + tbl_read(r->tbl, ln, buf->buf, ppos); + roff_addtbl(r->man, ln, r->tbl); + return e; + } if ( ! ctl) { - if (r->tbl) - return(tbl_read(r->tbl, ln, *bufp, pos)); - return(roff_parsetext(bufp, szp, pos, offs)); + r->options &= ~MPARSE_COMMENT; + return roff_parsetext(r, buf, pos, offs) | e; } + /* Skip empty request lines. */ + + if (buf->buf[pos] == '"') { + mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL); + return ROFF_IGN; + } else if (buf->buf[pos] == '\0') + return ROFF_IGN; + /* * If a scope is open, go to the child handler for that macro, * as it may want to preprocess before doing anything with it. @@ -754,42 +1892,92 @@ roff_parseln(struct roff *r, int ln, char **bufp, if (r->last) { t = r->last->tok; - assert(roffs[t].sub); - return((*roffs[t].sub)(r, t, bufp, szp, - ln, ppos, pos, offs)); + return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs); } + /* No scope is open. This is a new request or macro. */ + + r->options &= ~MPARSE_COMMENT; + spos = pos; + t = roff_parse(r, buf->buf, &pos, ln, ppos); + + /* Tables ignore most macros. */ + + if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS || + t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) { + mandoc_msg(MANDOCERR_TBLMACRO, + ln, pos, "%s", buf->buf + spos); + if (t != TOKEN_NONE) + return ROFF_IGN; + while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ') + pos++; + while (buf->buf[pos] == ' ') + pos++; + tbl_read(r->tbl, ln, buf->buf, pos); + roff_addtbl(r->man, ln, r->tbl); + return ROFF_IGN; + } + + /* For now, let high level macros abort .ce mode. */ + + if (ctl && roffce_node != NULL && + (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ || + t == ROFF_TH || t == ROFF_TS)) { + r->man->last = roffce_node; + r->man->next = ROFF_NEXT_SIBLING; + roffce_lines = 0; + roffce_node = NULL; + } + /* - * Lastly, as we've no scope open, try to look up and execute - * the new macro. If no macro is found, simply return and let - * the compilers handle it. + * This is neither a roff request nor a user-defined macro. + * Let the standard macro set parsers handle it. */ - if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos, ln, ppos))) - return(ROFF_CONT); + if (t == TOKEN_NONE) + return ROFF_CONT; - assert(roffs[t].proc); - return((*roffs[t].proc)(r, t, bufp, szp, ln, ppos, pos, offs)); + /* Execute a roff request or a user defined macro. */ + + return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs); } +/* + * Internal interface function to tell the roff parser that execution + * of the current macro ended. This is required because macro + * definitions usually do not end with a .return request. + */ void -roff_endparse(struct roff *r) +roff_userret(struct roff *r) { + struct mctx *ctx; + int i; - if (r->last) - mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, - r->last->line, r->last->col, NULL); + assert(r->mstackpos >= 0); + ctx = r->mstack + r->mstackpos; + for (i = 0; i < ctx->argc; i++) + free(ctx->argv[i]); + ctx->argc = 0; + r->mstackpos--; +} - if (r->eqn) { - mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, - r->eqn->eqn.ln, r->eqn->eqn.pos, NULL); - eqn_end(&r->eqn); +void +roff_endparse(struct roff *r) +{ + if (r->last != NULL) + mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line, + r->last->col, "%s", roff_name[r->last->tok]); + + if (r->eqn != NULL) { + mandoc_msg(MANDOCERR_BLK_NOEND, + r->eqn->node->line, r->eqn->node->pos, "EQ"); + eqn_parse(r->eqn); + r->eqn = NULL; } - if (r->tbl) { - mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, - r->tbl->line, r->tbl->pos, NULL); - tbl_end(&r->tbl); + if (r->tbl != NULL) { + tbl_end(r->tbl, 1); + r->tbl = NULL; } } @@ -797,32 +1985,49 @@ roff_endparse(struct roff *r) * Parse a roff node's type from the input buffer. This must be in the * form of ".foo xxx" in the usual way. */ -static enum rofft +static enum roff_tok roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos) { char *cp; const char *mac; size_t maclen; - enum rofft t; + int deftype; + enum roff_tok t; cp = buf + *pos; if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp) - return(ROFF_MAX); + return TOKEN_NONE; mac = cp; maclen = roff_getname(r, &cp, ln, ppos); - t = (r->current_string = roff_getstrn(r, mac, maclen)) - ? ROFF_USERDEF : roffhash_find(mac, maclen); - - if (ROFF_MAX != t) + deftype = ROFFDEF_USER | ROFFDEF_REN; + r->current_string = roff_getstrn(r, mac, maclen, &deftype); + switch (deftype) { + case ROFFDEF_USER: + t = ROFF_USERDEF; + break; + case ROFFDEF_REN: + t = ROFF_RENAMED; + break; + default: + t = roffhash_find(r->reqtab, mac, maclen); + break; + } + if (t != TOKEN_NONE) *pos = cp - buf; - - return(t); + else if (deftype == ROFFDEF_UNDEF) { + /* Using an undefined macro defines it to be empty. */ + roff_setstrn(&r->strtab, mac, maclen, "", 0, 0); + roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0); + } + return t; } -static enum rofferr +/* --- handling of request blocks ----------------------------------------- */ + +static int roff_cblock(ROFF_ARGS) { @@ -831,112 +2036,137 @@ roff_cblock(ROFF_ARGS) * ignore macro, otherwise raise a warning and just ignore it. */ - if (NULL == r->last) { - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); - return(ROFF_IGN); + if (r->last == NULL) { + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, ".."); + return ROFF_IGN; } switch (r->last->tok) { case ROFF_am: - /* FALLTHROUGH */ + /* ROFF_am1 is remapped to ROFF_am in roff_block(). */ case ROFF_ami: - /* FALLTHROUGH */ - case ROFF_am1: - /* FALLTHROUGH */ case ROFF_de: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */ - /* FALLTHROUGH */ case ROFF_dei: - /* FALLTHROUGH */ case ROFF_ig: break; default: - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); - return(ROFF_IGN); + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, ".."); + return ROFF_IGN; } - if ((*bufp)[pos]) - mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL); + if (buf->buf[pos] != '\0') + mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos, + ".. %s", buf->buf + pos); roffnode_pop(r); roffnode_cleanscope(r); - return(ROFF_IGN); + return ROFF_IGN; } -static void +/* + * Pop all nodes ending at the end of the current input line. + * Return the number of loops ended. + */ +static int roffnode_cleanscope(struct roff *r) { + int inloop; - while (r->last) { + inloop = 0; + while (r->last != NULL) { if (--r->last->endspan != 0) break; - roffnode_pop(r); + inloop += roffnode_pop(r); } + return inloop; } -static void +/* + * Handle the closing \} of a conditional block. + * Apart from generating warnings, this only pops nodes. + * Return the number of loops ended. + */ +static int roff_ccond(struct roff *r, int ln, int ppos) { - if (NULL == r->last) { - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); - return; + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}"); + return 0; } switch (r->last->tok) { case ROFF_el: - /* FALLTHROUGH */ case ROFF_ie: - /* FALLTHROUGH */ case ROFF_if: + case ROFF_while: break; default: - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); - return; + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}"); + return 0; } if (r->last->endspan > -1) { - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); - return; + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}"); + return 0; } - roffnode_pop(r); - roffnode_cleanscope(r); - return; + return roffnode_pop(r) + roffnode_cleanscope(r); } -static enum rofferr +static int roff_block(ROFF_ARGS) { - char *name, *cp; - size_t namesz; + const char *name, *value; + char *call, *cp, *iname, *rname; + size_t csz, namesz, rsz; + int deftype; - name = cp = *bufp + pos; - namesz = 0; + /* Ignore groff compatibility mode for now. */ - if (ROFF_ig != tok) { - if ('\0' == *cp) { - mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL); - return(ROFF_IGN); - } + if (tok == ROFF_de1) + tok = ROFF_de; + else if (tok == ROFF_dei1) + tok = ROFF_dei; + else if (tok == ROFF_am1) + tok = ROFF_am; + else if (tok == ROFF_ami1) + tok = ROFF_ami; - /* - * Re-write `de1', since we don't really care about - * groff's strange compatibility mode, into `de'. - */ + /* Parse the macro name argument. */ - if (ROFF_de1 == tok) - tok = ROFF_de; - else if (ROFF_de != tok) - mandoc_msg(MANDOCERR_REQUEST, r->parse, ln, ppos, - roffs[tok].name); - + cp = buf->buf + pos; + if (tok == ROFF_ig) { + iname = NULL; + namesz = 0; + } else { + iname = cp; namesz = roff_getname(r, &cp, ln, ppos); - name[namesz] = '\0'; + iname[namesz] = '\0'; + } + + /* Resolve the macro name argument if it is indirect. */ + + if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) { + deftype = ROFFDEF_USER; + name = roff_getstrn(r, iname, namesz, &deftype); + if (name == NULL) { + mandoc_msg(MANDOCERR_STR_UNDEF, + ln, (int)(iname - buf->buf), + "%.*s", (int)namesz, iname); + namesz = 0; + } else + namesz = strlen(name); } else - name = NULL; + name = iname; + if (namesz == 0 && tok != ROFF_ig) { + mandoc_msg(MANDOCERR_REQ_EMPTY, + ln, ppos, "%s", roff_name[tok]); + return ROFF_IGN; + } + roffnode_push(r, tok, name, ln, ppos); /* @@ -945,29 +2175,75 @@ roff_block(ROFF_ARGS) * appended from roff_block_text() in multiline mode. */ - if (namesz && ROFF_de == tok) + if (tok == ROFF_de || tok == ROFF_dei) { roff_setstrn(&r->strtab, name, namesz, "", 0, 0); + roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0); + } else if (tok == ROFF_am || tok == ROFF_ami) { + deftype = ROFFDEF_ANY; + value = roff_getstrn(r, iname, namesz, &deftype); + switch (deftype) { /* Before appending, ... */ + case ROFFDEF_PRE: /* copy predefined to user-defined. */ + roff_setstrn(&r->strtab, name, namesz, + value, strlen(value), 0); + break; + case ROFFDEF_REN: /* call original standard macro. */ + csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n", + (int)strlen(value), value); + roff_setstrn(&r->strtab, name, namesz, call, csz, 0); + roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0); + free(call); + break; + case ROFFDEF_STD: /* rename and call standard macro. */ + rsz = mandoc_asprintf(&rname, "__%s_renamed", name); + roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0); + csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n", + (int)rsz, rname); + roff_setstrn(&r->strtab, name, namesz, call, csz, 0); + free(call); + free(rname); + break; + default: + break; + } + } - if ('\0' == *cp) - return(ROFF_IGN); + if (*cp == '\0') + return ROFF_IGN; - /* If present, process the custom end-of-line marker. */ + /* Get the custom end marker. */ - name = cp; + iname = cp; namesz = roff_getname(r, &cp, ln, ppos); + + /* Resolve the end marker if it is indirect. */ + + if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) { + deftype = ROFFDEF_USER; + name = roff_getstrn(r, iname, namesz, &deftype); + if (name == NULL) { + mandoc_msg(MANDOCERR_STR_UNDEF, + ln, (int)(iname - buf->buf), + "%.*s", (int)namesz, iname); + namesz = 0; + } else + namesz = strlen(name); + } else + name = iname; + if (namesz) r->last->end = mandoc_strndup(name, namesz); - if ('\0' != *cp) - mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL); + if (*cp != '\0') + mandoc_msg(MANDOCERR_ARG_EXCESS, + ln, pos, ".%s ... %s", roff_name[tok], cp); - return(ROFF_IGN); + return ROFF_IGN; } -static enum rofferr +static int roff_block_sub(ROFF_ARGS) { - enum rofft t; + enum roff_tok t; int i, j; /* @@ -981,23 +2257,24 @@ roff_block_sub(ROFF_ARGS) if (r->last->end) { for (i = pos, j = 0; r->last->end[j]; j++, i++) - if ((*bufp)[i] != r->last->end[j]) + if (buf->buf[i] != r->last->end[j]) break; - if ('\0' == r->last->end[j] && - ('\0' == (*bufp)[i] || - ' ' == (*bufp)[i] || - '\t' == (*bufp)[i])) { + if (r->last->end[j] == '\0' && + (buf->buf[i] == '\0' || + buf->buf[i] == ' ' || + buf->buf[i] == '\t')) { roffnode_pop(r); roffnode_cleanscope(r); - while (' ' == (*bufp)[i] || '\t' == (*bufp)[i]) + while (buf->buf[i] == ' ' || buf->buf[i] == '\t') i++; pos = i; - if (ROFF_MAX != roff_parse(r, *bufp, &pos, ln, ppos)) - return(ROFF_RERUN); - return(ROFF_IGN); + if (roff_parse(r, buf->buf, &pos, ln, ppos) != + TOKEN_NONE) + return ROFF_RERUN; + return ROFF_IGN; } } @@ -1006,96 +2283,157 @@ roff_block_sub(ROFF_ARGS) * pulling it out of the hashtable. */ - t = roff_parse(r, *bufp, &pos, ln, ppos); + t = roff_parse(r, buf->buf, &pos, ln, ppos); - /* - * Macros other than block-end are only significant - * in `de' blocks; elsewhere, simply throw them away. - */ - if (ROFF_cblock != t) { - if (ROFF_de == tok) - roff_setstr(r, r->last->name, *bufp + ppos, 2); - return(ROFF_IGN); + if (t != ROFF_cblock) { + if (tok != ROFF_ig) + roff_setstr(r, r->last->name, buf->buf + ppos, 2); + return ROFF_IGN; } - assert(roffs[t].proc); - return((*roffs[t].proc)(r, t, bufp, szp, ln, ppos, pos, offs)); + return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs); } -static enum rofferr +static int roff_block_text(ROFF_ARGS) { - if (ROFF_de == tok) - roff_setstr(r, r->last->name, *bufp + pos, 2); + if (tok != ROFF_ig) + roff_setstr(r, r->last->name, buf->buf + pos, 2); - return(ROFF_IGN); + return ROFF_IGN; } -static enum rofferr +static int roff_cond_sub(ROFF_ARGS) { - enum rofft t; + struct roffnode *bl; char *ep; - int rr; + int endloop, irc, rr; + enum roff_tok t; + irc = ROFF_IGN; rr = r->last->rule; - roffnode_cleanscope(r); - t = roff_parse(r, *bufp, &pos, ln, ppos); + endloop = tok != ROFF_while ? ROFF_IGN : + rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT; + if (roffnode_cleanscope(r)) + irc |= endloop; /* - * Fully handle known macros when they are structurally - * required or when the conditional evaluated to true. - */ - - if ((ROFF_MAX != t) && - (rr || ROFFMAC_STRUCT & roffs[t].flags)) { - assert(roffs[t].proc); - return((*roffs[t].proc)(r, t, bufp, szp, - ln, ppos, pos, offs)); - } - - /* * If `\}' occurs on a macro line without a preceding macro, * drop the line completely. */ - ep = *bufp + pos; - if ('\\' == ep[0] && '}' == ep[1]) + ep = buf->buf + pos; + if (ep[0] == '\\' && ep[1] == '}') rr = 0; - /* Always check for the closing delimiter `\}'. */ + /* + * The closing delimiter `\}' rewinds the conditional scope + * but is otherwise ignored when interpreting the line. + */ - while (NULL != (ep = strchr(ep, '\\'))) { - if ('}' == *(++ep)) { - *ep = '&'; - roff_ccond(r, ln, ep - *bufp - 1); + while ((ep = strchr(ep, '\\')) != NULL) { + switch (ep[1]) { + case '}': + memmove(ep, ep + 2, strlen(ep + 2) + 1); + if (roff_ccond(r, ln, ep - buf->buf)) + irc |= endloop; + break; + case '\0': + ++ep; + break; + default: + ep += 2; + break; } - ++ep; } - return(rr ? ROFF_CONT : ROFF_IGN); + + t = roff_parse(r, buf->buf, &pos, ln, ppos); + + /* For now, let high level macros abort .ce mode. */ + + if (roffce_node != NULL && + (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ || + t == ROFF_TH || t == ROFF_TS)) { + r->man->last = roffce_node; + r->man->next = ROFF_NEXT_SIBLING; + roffce_lines = 0; + roffce_node = NULL; + } + + /* + * Fully handle known macros when they are structurally + * required or when the conditional evaluated to true. + */ + + if (t == ROFF_break) { + if (irc & ROFF_LOOPMASK) + irc = ROFF_IGN | ROFF_LOOPEXIT; + else if (rr) { + for (bl = r->last; bl != NULL; bl = bl->parent) { + bl->rule = 0; + if (bl->tok == ROFF_while) + break; + } + } + } else if (t != TOKEN_NONE && + (rr || roffs[t].flags & ROFFMAC_STRUCT)) + irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs); + else + irc |= rr ? ROFF_CONT : ROFF_IGN; + return irc; } -static enum rofferr +static int roff_cond_text(ROFF_ARGS) { char *ep; - int rr; + int endloop, irc, rr; + irc = ROFF_IGN; rr = r->last->rule; - roffnode_cleanscope(r); + endloop = tok != ROFF_while ? ROFF_IGN : + rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT; + if (roffnode_cleanscope(r)) + irc |= endloop; - ep = *bufp + pos; - while (NULL != (ep = strchr(ep, '\\'))) { - if ('}' == *(++ep)) { - *ep = '&'; - roff_ccond(r, ln, ep - *bufp - 1); + /* + * If `\}' occurs on a text line with neither preceding + * nor following characters, drop the line completely. + */ + + ep = buf->buf + pos; + if (strcmp(ep, "\\}") == 0) + rr = 0; + + /* + * The closing delimiter `\}' rewinds the conditional scope + * but is otherwise ignored when interpreting the line. + */ + + while ((ep = strchr(ep, '\\')) != NULL) { + switch (ep[1]) { + case '}': + memmove(ep, ep + 2, strlen(ep + 2) + 1); + if (roff_ccond(r, ln, ep - buf->buf)) + irc |= endloop; + break; + case '\0': + ++ep; + break; + default: + ep += 2; + break; } - ++ep; } - return(rr ? ROFF_CONT : ROFF_IGN); + if (rr) + irc |= ROFF_CONT; + return irc; } +/* --- handling of numeric and conditional expressions -------------------- */ + /* * Parse a single signed integer number. Stop at the first non-digit. * If there is at least one digit, return success and advance the @@ -1103,18 +2441,22 @@ roff_cond_text(ROFF_ARGS) * Ignore overflows, treat them just like the C language. */ static int -roff_getnum(const char *v, int *pos, int *res) +roff_getnum(const char *v, int *pos, int *res, int flags) { - int myres, n, p; + int myres, scaled, n, p; if (NULL == res) res = &myres; p = *pos; n = v[p] == '-'; - if (n) + if (n || v[p] == '+') p++; + if (flags & ROFFNUM_WHITE) + while (isspace((unsigned char)v[p])) + p++; + for (*res = 0; isdigit((unsigned char)v[p]); p++) *res = 10 * *res + v[p] - '0'; if (p == *pos + n) @@ -1123,7 +2465,44 @@ roff_getnum(const char *v, int *pos, int *res) if (n) *res = -*res; - *pos = p; + /* Each number may be followed by one optional scaling unit. */ + + switch (v[p]) { + case 'f': + scaled = *res * 65536; + break; + case 'i': + scaled = *res * 240; + break; + case 'c': + scaled = *res * 240 / 2.54; + break; + case 'v': + case 'P': + scaled = *res * 40; + break; + case 'm': + case 'n': + scaled = *res * 24; + break; + case 'p': + scaled = *res * 10 / 3; + break; + case 'u': + scaled = *res; + break; + case 'M': + scaled = *res * 6 / 25; + break; + default: + scaled = *res; + p--; + break; + } + if (flags & ROFFNUM_SCALE) + *res = scaled; + + *pos = p + 1; return 1; } @@ -1164,10 +2543,10 @@ roff_evalstrcond(const char *v, int *pos) out: if (NULL == s3) s3 = strchr(s2, '\0'); - else + else if (*s3 != '\0') s3++; *pos = s3 - v; - return(match); + return match; } /* @@ -1175,9 +2554,12 @@ out: * or string condition. */ static int -roff_evalcond(const char *v, int *pos) +roff_evalcond(struct roff *r, int ln, char *v, int *pos) { - int wanttrue, number; + const char *start, *end; + char *cp, *name; + size_t sz; + int deftype, len, number, savepos, istrue, wanttrue; if ('!' == v[*pos]) { wanttrue = 0; @@ -1186,42 +2568,114 @@ roff_evalcond(const char *v, int *pos) wanttrue = 1; switch (v[*pos]) { + case '\0': + return 0; case 'n': - /* FALLTHROUGH */ case 'o': (*pos)++; - return(wanttrue); - case 'c': - /* FALLTHROUGH */ - case 'd': - /* FALLTHROUGH */ + return wanttrue; case 'e': - /* FALLTHROUGH */ - case 'r': - /* FALLTHROUGH */ case 't': + case 'v': (*pos)++; - return(!wanttrue); + return !wanttrue; + case 'c': + do { + (*pos)++; + } while (v[*pos] == ' '); + + /* + * Quirk for groff compatibility: + * The horizontal tab is neither available nor unavailable. + */ + + if (v[*pos] == '\t') { + (*pos)++; + return 0; + } + + /* Printable ASCII characters are available. */ + + if (v[*pos] != '\\') { + (*pos)++; + return wanttrue; + } + + end = v + ++*pos; + switch (mandoc_escape(&end, &start, &len)) { + case ESCAPE_SPECIAL: + istrue = mchars_spec2cp(start, len) != -1; + break; + case ESCAPE_UNICODE: + istrue = 1; + break; + case ESCAPE_NUMBERED: + istrue = mchars_num2char(start, len) != -1; + break; + default: + istrue = !wanttrue; + break; + } + *pos = end - v; + return istrue == wanttrue; + case 'd': + case 'r': + cp = v + *pos + 1; + while (*cp == ' ') + cp++; + name = cp; + sz = roff_getname(r, &cp, ln, cp - v); + if (sz == 0) + istrue = 0; + else if (v[*pos] == 'r') + istrue = roff_hasregn(r, name, sz); + else { + deftype = ROFFDEF_ANY; + roff_getstrn(r, name, sz, &deftype); + istrue = !!deftype; + } + *pos = (name + sz) - v; + return istrue == wanttrue; default: break; } - if (roff_evalnum(v, pos, &number, 0)) - return((number > 0) == wanttrue); + savepos = *pos; + if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE)) + return (number > 0) == wanttrue; + else if (*pos == savepos) + return roff_evalstrcond(v, pos) == wanttrue; else - return(roff_evalstrcond(v, pos) == wanttrue); + return 0; } -static enum rofferr +static int roff_line_ignore(ROFF_ARGS) { - return(ROFF_IGN); + return ROFF_IGN; } -static enum rofferr +static int +roff_insec(ROFF_ARGS) +{ + + mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]); + return ROFF_IGN; +} + +static int +roff_unsupp(ROFF_ARGS) +{ + + mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]); + return ROFF_IGN; +} + +static int roff_cond(ROFF_ARGS) { + int irc; roffnode_push(r, tok, NULL, ln, ppos); @@ -1233,20 +2687,20 @@ roff_cond(ROFF_ARGS) * If we're not an `el', however, then evaluate the conditional. */ - r->last->rule = ROFF_el == tok ? + r->last->rule = tok == ROFF_el ? (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) : - roff_evalcond(*bufp, &pos); + roff_evalcond(r, ln, buf->buf, &pos); /* * An if-else will put the NEGATION of the current evaluated * conditional into the stack of rules. */ - if (ROFF_ie == tok) { - if (r->rstackpos == RSTACK_MAX - 1) { - mandoc_msg(MANDOCERR_MEM, - r->parse, ln, ppos, NULL); - return(ROFF_ERR); + if (tok == ROFF_ie) { + if (r->rstackpos + 1 == r->rstacksz) { + r->rstacksz += 16; + r->rstack = mandoc_reallocarray(r->rstack, + r->rstacksz, sizeof(int)); } r->rstack[++r->rstackpos] = !r->last->rule; } @@ -1260,21 +2714,24 @@ roff_cond(ROFF_ARGS) * Determine scope. * If there is nothing on the line after the conditional, * not even whitespace, use next-line scope. + * Except that .while does not support next-line scope. */ - if ('\0' == (*bufp)[pos]) { + if (buf->buf[pos] == '\0' && tok != ROFF_while) { r->last->endspan = 2; goto out; } - while (' ' == (*bufp)[pos]) + while (buf->buf[pos] == ' ') pos++; /* An opening brace requests multiline scope. */ - if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) { + if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') { r->last->endspan = -1; pos += 2; + while (buf->buf[pos] == ' ') + pos++; goto out; } @@ -1284,45 +2741,64 @@ roff_cond(ROFF_ARGS) * nothing but trailing whitespace. */ - if ('\0' == (*bufp)[pos]) - mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL); + if (buf->buf[pos] == '\0') + mandoc_msg(MANDOCERR_COND_EMPTY, + ln, ppos, "%s", roff_name[tok]); r->last->endspan = 1; out: *offs = pos; - return(ROFF_RERUN); + irc = ROFF_RERUN; + if (tok == ROFF_while) + irc |= ROFF_WHILE; + return irc; } -static enum rofferr +static int roff_ds(ROFF_ARGS) { char *string; const char *name; size_t namesz; + /* Ignore groff compatibility mode for now. */ + + if (tok == ROFF_ds1) + tok = ROFF_ds; + else if (tok == ROFF_as1) + tok = ROFF_as; + /* * The first word is the name of the string. * If it is empty or terminated by an escape sequence, * abort the `ds' request without defining anything. */ - name = string = *bufp + pos; - if ('\0' == *name) - return(ROFF_IGN); + name = string = buf->buf + pos; + if (*name == '\0') + return ROFF_IGN; namesz = roff_getname(r, &string, ln, pos); - if ('\\' == name[namesz]) - return(ROFF_IGN); + switch (name[namesz]) { + case '\\': + return ROFF_IGN; + case '\t': + string = buf->buf + pos + namesz; + break; + default: + break; + } /* Read past the initial double-quote, if any. */ - if ('"' == *string) + if (*string == '"') string++; /* The rest is the value. */ roff_setstrn(&r->strtab, name, namesz, string, strlen(string), ROFF_as == tok); - return(ROFF_IGN); + roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0); + return ROFF_IGN; } /* @@ -1338,17 +2814,11 @@ roff_getop(const char *v, int *pos, char *res) switch (*res) { case '+': - /* FALLTHROUGH */ case '-': - /* FALLTHROUGH */ case '*': - /* FALLTHROUGH */ case '/': - /* FALLTHROUGH */ case '%': - /* FALLTHROUGH */ case '&': - /* FALLTHROUGH */ case ':': break; case '<': @@ -1388,11 +2858,11 @@ roff_getop(const char *v, int *pos, char *res) (*pos)++; break; default: - return(0); + return 0; } (*pos)++; - return(*res); + return *res; } /* @@ -1400,15 +2870,16 @@ roff_getop(const char *v, int *pos, char *res) * or a single signed integer number. */ static int -roff_evalpar(const char *v, int *pos, int *res) +roff_evalpar(struct roff *r, int ln, + const char *v, int *pos, int *res, int flags) { if ('(' != v[*pos]) - return(roff_getnum(v, pos, res)); + return roff_getnum(v, pos, res, flags); (*pos)++; - if ( ! roff_evalnum(v, pos, res, 1)) - return(0); + if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE)) + return 0; /* * Omission of the closing parenthesis @@ -1419,9 +2890,9 @@ roff_evalpar(const char *v, int *pos, int *res) if (')' == v[*pos]) (*pos)++; else if (NULL == res) - return(0); + return 0; - return(1); + return 1; } /* @@ -1429,7 +2900,8 @@ roff_evalpar(const char *v, int *pos, int *res) * Proceed left to right, there is no concept of precedence. */ static int -roff_evalnum(const char *v, int *pos, int *res, int skipwhite) +roff_evalnum(struct roff *r, int ln, const char *v, + int *pos, int *res, int flags) { int mypos, operand2; char operator; @@ -1439,29 +2911,29 @@ roff_evalnum(const char *v, int *pos, int *res, int sk pos = &mypos; } - if (skipwhite) + if (flags & ROFFNUM_WHITE) while (isspace((unsigned char)v[*pos])) (*pos)++; - if ( ! roff_evalpar(v, pos, res)) - return(0); + if ( ! roff_evalpar(r, ln, v, pos, res, flags)) + return 0; while (1) { - if (skipwhite) + if (flags & ROFFNUM_WHITE) while (isspace((unsigned char)v[*pos])) (*pos)++; if ( ! roff_getop(v, pos, &operator)) break; - if (skipwhite) + if (flags & ROFFNUM_WHITE) while (isspace((unsigned char)v[*pos])) (*pos)++; - if ( ! roff_evalpar(v, pos, &operand2)) - return(0); + if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags)) + return 0; - if (skipwhite) + if (flags & ROFFNUM_WHITE) while (isspace((unsigned char)v[*pos])) (*pos)++; @@ -1479,9 +2951,21 @@ roff_evalnum(const char *v, int *pos, int *res, int sk *res *= operand2; break; case '/': + if (operand2 == 0) { + mandoc_msg(MANDOCERR_DIVZERO, + ln, *pos, "%s", v); + *res = 0; + break; + } *res /= operand2; break; case '%': + if (operand2 == 0) { + mandoc_msg(MANDOCERR_DIVZERO, + ln, *pos, "%s", v); + *res = 0; + break; + } *res %= operand2; break; case '<': @@ -1520,26 +3004,37 @@ roff_evalnum(const char *v, int *pos, int *res, int sk abort(); } } - return(1); + return 1; } +/* --- register management ------------------------------------------------ */ + void roff_setreg(struct roff *r, const char *name, int val, char sign) { + roff_setregn(r, name, strlen(name), val, sign, INT_MIN); +} + +static void +roff_setregn(struct roff *r, const char *name, size_t len, + int val, char sign, int step) +{ struct roffreg *reg; /* Search for an existing register with the same name. */ reg = r->regtab; - while (reg && strcmp(name, reg->key.p)) + while (reg != NULL && (reg->key.sz != len || + strncmp(reg->key.p, name, len) != 0)) reg = reg->next; if (NULL == reg) { /* Create a new register. */ reg = mandoc_malloc(sizeof(struct roffreg)); - reg->key.p = mandoc_strdup(name); - reg->key.sz = strlen(name); + reg->key.p = mandoc_strndup(name, len); + reg->key.sz = len; reg->val = 0; + reg->step = 0; reg->next = r->regtab; r->regtab = reg; } @@ -1550,6 +3045,8 @@ roff_setreg(struct roff *r, const char *name, int val, reg->val -= val; else reg->val = val; + if (step != INT_MIN) + reg->step = step; } /* @@ -1559,64 +3056,86 @@ roff_setreg(struct roff *r, const char *name, int val, * were to turn up, another special value would have to be chosen. */ static int -roff_getregro(const char *name) +roff_getregro(const struct roff *r, const char *name) { switch (*name) { + case '$': /* Number of arguments of the last macro evaluated. */ + return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc; case 'A': /* ASCII approximation mode is always off. */ - return(0); + return 0; case 'g': /* Groff compatibility mode is always on. */ - return(1); + return 1; case 'H': /* Fixed horizontal resolution. */ - return (24); + return 24; case 'j': /* Always adjust left margin only. */ - return(0); + return 0; case 'T': /* Some output device is always defined. */ - return(1); + return 1; case 'V': /* Fixed vertical resolution. */ - return (40); + return 40; default: - return (-1); + return -1; } } int -roff_getreg(const struct roff *r, const char *name) +roff_getreg(struct roff *r, const char *name) { + return roff_getregn(r, name, strlen(name), '\0'); +} + +static int +roff_getregn(struct roff *r, const char *name, size_t len, char sign) +{ struct roffreg *reg; int val; - if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) { - val = roff_getregro(name + 1); + if ('.' == name[0] && 2 == len) { + val = roff_getregro(r, name + 1); if (-1 != val) - return (val); + return val; } - for (reg = r->regtab; reg; reg = reg->next) - if (0 == strcmp(name, reg->key.p)) - return(reg->val); + for (reg = r->regtab; reg; reg = reg->next) { + if (len == reg->key.sz && + 0 == strncmp(name, reg->key.p, len)) { + switch (sign) { + case '+': + reg->val += reg->step; + break; + case '-': + reg->val -= reg->step; + break; + default: + break; + } + return reg->val; + } + } - return(0); + roff_setregn(r, name, len, 0, '\0', INT_MIN); + return 0; } static int -roff_getregn(const struct roff *r, const char *name, size_t len) +roff_hasregn(const struct roff *r, const char *name, size_t len) { struct roffreg *reg; int val; if ('.' == name[0] && 2 == len) { - val = roff_getregro(name + 1); + val = roff_getregro(r, name + 1); if (-1 != val) - return (val); + return 1; } for (reg = r->regtab; reg; reg = reg->next) if (len == reg->key.sz && 0 == strncmp(name, reg->key.p, len)) - return(reg->val); + return 1; - return(0); + return 0; } static void @@ -1632,278 +3151,608 @@ roff_freereg(struct roffreg *reg) } } -static enum rofferr +static int roff_nr(ROFF_ARGS) { - char *key, *val; + char *key, *val, *step; size_t keysz; - int iv; + int iv, is, len; char sign; - key = val = *bufp + pos; - if ('\0' == *key) - return(ROFF_IGN); + key = val = buf->buf + pos; + if (*key == '\0') + return ROFF_IGN; keysz = roff_getname(r, &val, ln, pos); - if ('\\' == key[keysz]) - return(ROFF_IGN); - key[keysz] = '\0'; + if (key[keysz] == '\\' || key[keysz] == '\t') + return ROFF_IGN; sign = *val; - if ('+' == sign || '-' == sign) + if (sign == '+' || sign == '-') val++; - if (roff_evalnum(val, NULL, &iv, 0)) - roff_setreg(r, key, iv, sign); + len = 0; + if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0) + return ROFF_IGN; - return(ROFF_IGN); + step = val + len; + while (isspace((unsigned char)*step)) + step++; + if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0) + is = INT_MIN; + + roff_setregn(r, key, keysz, iv, sign, is); + return ROFF_IGN; } -static enum rofferr +static int roff_rr(ROFF_ARGS) { struct roffreg *reg, **prev; char *name, *cp; size_t namesz; - name = cp = *bufp + pos; - if ('\0' == *name) - return(ROFF_IGN); + name = cp = buf->buf + pos; + if (*name == '\0') + return ROFF_IGN; namesz = roff_getname(r, &cp, ln, pos); name[namesz] = '\0'; prev = &r->regtab; while (1) { reg = *prev; - if (NULL == reg || !strcmp(name, reg->key.p)) + if (reg == NULL || !strcmp(name, reg->key.p)) break; prev = ®->next; } - if (NULL != reg) { + if (reg != NULL) { *prev = reg->next; free(reg->key.p); free(reg); } - return(ROFF_IGN); + return ROFF_IGN; } -static enum rofferr +/* --- handler functions for roff requests -------------------------------- */ + +static int roff_rm(ROFF_ARGS) { const char *name; char *cp; size_t namesz; - cp = *bufp + pos; - while ('\0' != *cp) { + cp = buf->buf + pos; + while (*cp != '\0') { name = cp; - namesz = roff_getname(r, &cp, ln, (int)(cp - *bufp)); + namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf)); roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0); - if ('\\' == name[namesz]) + roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0); + if (name[namesz] == '\\' || name[namesz] == '\t') break; } - return(ROFF_IGN); + return ROFF_IGN; } -static enum rofferr +static int roff_it(ROFF_ARGS) { - char *cp; - size_t len; int iv; /* Parse the number of lines. */ - cp = *bufp + pos; - len = strcspn(cp, " \t"); - cp[len] = '\0'; - if ((iv = mandoc_strntoi(cp, len, 10)) <= 0) { - mandoc_msg(MANDOCERR_NUMERIC, r->parse, - ln, ppos, *bufp + 1); - return(ROFF_IGN); + + if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) { + mandoc_msg(MANDOCERR_IT_NONUM, + ln, ppos, "%s", buf->buf + 1); + return ROFF_IGN; } - cp += len + 1; - /* Arm the input line trap. */ + while (isspace((unsigned char)buf->buf[pos])) + pos++; + + /* + * Arm the input line trap. + * Special-casing "an-trap" is an ugly workaround to cope + * with DocBook stupidly fiddling with man(7) internals. + */ + roffit_lines = iv; - roffit_macro = mandoc_strdup(cp); - return(ROFF_IGN); + roffit_macro = mandoc_strdup(iv != 1 || + strcmp(buf->buf + pos, "an-trap") ? + buf->buf + pos : "br"); + return ROFF_IGN; } -static enum rofferr +static int roff_Dd(ROFF_ARGS) { - const char *const *cp; + int mask; + enum roff_tok t, te; - if (0 == ((MPARSE_MDOC | MPARSE_QUICK) & r->options)) - for (cp = __mdoc_reserved; *cp; cp++) - roff_setstr(r, *cp, NULL, 0); + switch (tok) { + case ROFF_Dd: + tok = MDOC_Dd; + te = MDOC_MAX; + if (r->format == 0) + r->format = MPARSE_MDOC; + mask = MPARSE_MDOC | MPARSE_QUICK; + break; + case ROFF_TH: + tok = MAN_TH; + te = MAN_MAX; + if (r->format == 0) + r->format = MPARSE_MAN; + mask = MPARSE_QUICK; + break; + default: + abort(); + } + if ((r->options & mask) == 0) + for (t = tok; t < te; t++) + roff_setstr(r, roff_name[t], NULL, 0); + return ROFF_CONT; +} - return(ROFF_CONT); +static int +roff_TE(ROFF_ARGS) +{ + r->man->flags &= ~ROFF_NONOFILL; + if (r->tbl == NULL) { + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE"); + return ROFF_IGN; + } + if (tbl_end(r->tbl, 0) == 0) { + r->tbl = NULL; + free(buf->buf); + buf->buf = mandoc_strdup(".sp"); + buf->sz = 4; + *offs = 0; + return ROFF_REPARSE; + } + r->tbl = NULL; + return ROFF_IGN; } -static enum rofferr -roff_TH(ROFF_ARGS) +static int +roff_T_(ROFF_ARGS) { - const char *const *cp; - if (0 == (MPARSE_QUICK & r->options)) - for (cp = __man_reserved; *cp; cp++) - roff_setstr(r, *cp, NULL, 0); + if (NULL == r->tbl) + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&"); + else + tbl_restart(ln, ppos, r->tbl); - return(ROFF_CONT); + return ROFF_IGN; } -static enum rofferr -roff_TE(ROFF_ARGS) +/* + * Handle in-line equation delimiters. + */ +static int +roff_eqndelim(struct roff *r, struct buf *buf, int pos) { + char *cp1, *cp2; + const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr; - if (NULL == r->tbl) - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); - else - tbl_end(&r->tbl); + /* + * Outside equations, look for an opening delimiter. + * If we are inside an equation, we already know it is + * in-line, or this function wouldn't have been called; + * so look for a closing delimiter. + */ - return(ROFF_IGN); + cp1 = buf->buf + pos; + cp2 = strchr(cp1, r->eqn == NULL ? + r->last_eqn->odelim : r->last_eqn->cdelim); + if (cp2 == NULL) + return ROFF_CONT; + + *cp2++ = '\0'; + bef_pr = bef_nl = aft_nl = aft_pr = ""; + + /* Handle preceding text, protecting whitespace. */ + + if (*buf->buf != '\0') { + if (r->eqn == NULL) + bef_pr = "\\&"; + bef_nl = "\n"; + } + + /* + * Prepare replacing the delimiter with an equation macro + * and drop leading white space from the equation. + */ + + if (r->eqn == NULL) { + while (*cp2 == ' ') + cp2++; + mac = ".EQ"; + } else + mac = ".EN"; + + /* Handle following text, protecting whitespace. */ + + if (*cp2 != '\0') { + aft_nl = "\n"; + if (r->eqn != NULL) + aft_pr = "\\&"; + } + + /* Do the actual replacement. */ + + buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf, + bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1; + free(buf->buf); + buf->buf = cp1; + + /* Toggle the in-line state of the eqn subsystem. */ + + r->eqn_inline = r->eqn == NULL; + return ROFF_REPARSE; } -static enum rofferr -roff_T_(ROFF_ARGS) +static int +roff_EQ(ROFF_ARGS) { + struct roff_node *n; - if (NULL == r->tbl) - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); + if (r->man->meta.macroset == MACROSET_MAN) + man_breakscope(r->man, ROFF_EQ); + n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE); + if (ln > r->man->last->line) + n->flags |= NODE_LINE; + n->eqn = eqn_box_new(); + roff_node_append(r->man, n); + r->man->next = ROFF_NEXT_SIBLING; + + assert(r->eqn == NULL); + if (r->last_eqn == NULL) + r->last_eqn = eqn_alloc(); else - tbl_restart(ppos, ln, r->tbl); + eqn_reset(r->last_eqn); + r->eqn = r->last_eqn; + r->eqn->node = n; - return(ROFF_IGN); + if (buf->buf[pos] != '\0') + mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos, + ".EQ %s", buf->buf + pos); + + return ROFF_IGN; } -#if 0 static int -roff_closeeqn(struct roff *r) +roff_EN(ROFF_ARGS) { + if (r->eqn != NULL) { + eqn_parse(r->eqn); + r->eqn = NULL; + } else + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN"); + if (buf->buf[pos] != '\0') + mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos, + "EN %s", buf->buf + pos); + return ROFF_IGN; +} - return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0); +static int +roff_TS(ROFF_ARGS) +{ + if (r->tbl != NULL) { + mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS"); + tbl_end(r->tbl, 0); + } + r->man->flags |= ROFF_NONOFILL; + r->tbl = tbl_alloc(ppos, ln, r->last_tbl); + if (r->last_tbl == NULL) + r->first_tbl = r->tbl; + r->last_tbl = r->tbl; + return ROFF_IGN; } -#endif -static void -roff_openeqn(struct roff *r, const char *name, int line, - int offs, const char *buf) +static int +roff_noarg(ROFF_ARGS) { - struct eqn_node *e; - int poff; + if (r->man->flags & (MAN_BLINE | MAN_ELINE)) + man_breakscope(r->man, tok); + if (tok == ROFF_brp) + tok = ROFF_br; + roff_elem_alloc(r->man, ln, ppos, tok); + if (buf->buf[pos] != '\0') + mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos, + "%s %s", roff_name[tok], buf->buf + pos); + if (tok == ROFF_nf) + r->man->flags |= ROFF_NOFILL; + else if (tok == ROFF_fi) + r->man->flags &= ~ROFF_NOFILL; + r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED; + r->man->next = ROFF_NEXT_SIBLING; + return ROFF_IGN; +} - assert(NULL == r->eqn); - e = eqn_alloc(name, offs, line, r->parse); +static int +roff_onearg(ROFF_ARGS) +{ + struct roff_node *n; + char *cp; + int npos; - if (r->last_eqn) - r->last_eqn->next = e; - else - r->first_eqn = r->last_eqn = e; + if (r->man->flags & (MAN_BLINE | MAN_ELINE) && + (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp || + tok == ROFF_ti)) + man_breakscope(r->man, tok); - r->eqn = r->last_eqn = e; + if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) { + r->man->last = roffce_node; + r->man->next = ROFF_NEXT_SIBLING; + } - if (buf) { - poff = 0; - eqn_read(&r->eqn, line, buf, offs, &poff); + roff_elem_alloc(r->man, ln, ppos, tok); + n = r->man->last; + + cp = buf->buf + pos; + if (*cp != '\0') { + while (*cp != '\0' && *cp != ' ') + cp++; + while (*cp == ' ') + *cp++ = '\0'; + if (*cp != '\0') + mandoc_msg(MANDOCERR_ARG_EXCESS, + ln, (int)(cp - buf->buf), + "%s ... %s", roff_name[tok], cp); + roff_word_alloc(r->man, ln, pos, buf->buf + pos); } + + if (tok == ROFF_ce || tok == ROFF_rj) { + if (r->man->last->type == ROFFT_ELEM) { + roff_word_alloc(r->man, ln, pos, "1"); + r->man->last->flags |= NODE_NOSRC; + } + npos = 0; + if (roff_evalnum(r, ln, r->man->last->string, &npos, + &roffce_lines, 0) == 0) { + mandoc_msg(MANDOCERR_CE_NONUM, + ln, pos, "ce %s", buf->buf + pos); + roffce_lines = 1; + } + if (roffce_lines < 1) { + r->man->last = r->man->last->parent; + roffce_node = NULL; + roffce_lines = 0; + } else + roffce_node = r->man->last->parent; + } else { + n->flags |= NODE_VALID | NODE_ENDED; + r->man->last = n; + } + n->flags |= NODE_LINE; + r->man->next = ROFF_NEXT_SIBLING; + return ROFF_IGN; } -static enum rofferr -roff_EQ(ROFF_ARGS) +static int +roff_manyarg(ROFF_ARGS) { + struct roff_node *n; + char *sp, *ep; - roff_openeqn(r, *bufp + pos, ln, ppos, NULL); - return(ROFF_IGN); + roff_elem_alloc(r->man, ln, ppos, tok); + n = r->man->last; + + for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) { + while (*ep != '\0' && *ep != ' ') + ep++; + while (*ep == ' ') + *ep++ = '\0'; + roff_word_alloc(r->man, ln, sp - buf->buf, sp); + } + + n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED; + r->man->last = n; + r->man->next = ROFF_NEXT_SIBLING; + return ROFF_IGN; } -static enum rofferr -roff_EN(ROFF_ARGS) +static int +roff_als(ROFF_ARGS) { + char *oldn, *newn, *end, *value; + size_t oldsz, newsz, valsz; - mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); - return(ROFF_IGN); + newn = oldn = buf->buf + pos; + if (*newn == '\0') + return ROFF_IGN; + + newsz = roff_getname(r, &oldn, ln, pos); + if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0') + return ROFF_IGN; + + end = oldn; + oldsz = roff_getname(r, &end, ln, oldn - buf->buf); + if (oldsz == 0) + return ROFF_IGN; + + valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n", + (int)oldsz, oldn); + roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0); + roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0); + free(value); + return ROFF_IGN; } -static enum rofferr -roff_TS(ROFF_ARGS) +/* + * The .break request only makes sense inside conditionals, + * and that case is already handled in roff_cond_sub(). + */ +static int +roff_break(ROFF_ARGS) { - struct tbl_node *tbl; + mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break"); + return ROFF_IGN; +} - if (r->tbl) { - mandoc_msg(MANDOCERR_SCOPEBROKEN, r->parse, ln, ppos, NULL); - tbl_end(&r->tbl); +static int +roff_cc(ROFF_ARGS) +{ + const char *p; + + p = buf->buf + pos; + + if (*p == '\0' || (r->control = *p++) == '.') + r->control = '\0'; + + if (*p != '\0') + mandoc_msg(MANDOCERR_ARG_EXCESS, + ln, p - buf->buf, "cc ... %s", p); + + return ROFF_IGN; +} + +static int +roff_char(ROFF_ARGS) +{ + const char *p, *kp, *vp; + size_t ksz, vsz; + int font; + + /* Parse the character to be replaced. */ + + kp = buf->buf + pos; + p = kp + 1; + if (*kp == '\0' || (*kp == '\\' && + mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) || + (*p != ' ' && *p != '\0')) { + mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp); + return ROFF_IGN; } + ksz = p - kp; + while (*p == ' ') + p++; - tbl = tbl_alloc(ppos, ln, r->parse); + /* + * If the replacement string contains a font escape sequence, + * we have to restore the font at the end. + */ - if (r->last_tbl) - r->last_tbl->next = tbl; - else - r->first_tbl = r->last_tbl = tbl; + vp = p; + vsz = strlen(p); + font = 0; + while (*p != '\0') { + if (*p++ != '\\') + continue; + switch (mandoc_escape(&p, NULL, NULL)) { + case ESCAPE_FONT: + case ESCAPE_FONTROMAN: + case ESCAPE_FONTITALIC: + case ESCAPE_FONTBOLD: + case ESCAPE_FONTBI: + case ESCAPE_FONTCW: + case ESCAPE_FONTPREV: + font++; + break; + default: + break; + } + } + if (font > 1) + mandoc_msg(MANDOCERR_CHAR_FONT, + ln, (int)(vp - buf->buf), "%s", vp); - r->tbl = r->last_tbl = tbl; - return(ROFF_IGN); + /* + * Approximate the effect of .char using the .tr tables. + * XXX In groff, .char and .tr interact differently. + */ + + if (ksz == 1) { + if (r->xtab == NULL) + r->xtab = mandoc_calloc(128, sizeof(*r->xtab)); + assert((unsigned int)*kp < 128); + free(r->xtab[(int)*kp].p); + r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p, + "%s%s", vp, font ? "\fP" : ""); + } else { + roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0); + if (font) + roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1); + } + return ROFF_IGN; } -static enum rofferr -roff_cc(ROFF_ARGS) +static int +roff_ec(ROFF_ARGS) { const char *p; - p = *bufp + pos; + p = buf->buf + pos; + if (*p == '\0') + r->escape = '\\'; + else { + r->escape = *p; + if (*++p != '\0') + mandoc_msg(MANDOCERR_ARG_EXCESS, ln, + (int)(p - buf->buf), "ec ... %s", p); + } + return ROFF_IGN; +} - if ('\0' == *p || '.' == (r->control = *p++)) - r->control = 0; +static int +roff_eo(ROFF_ARGS) +{ + r->escape = '\0'; + if (buf->buf[pos] != '\0') + mandoc_msg(MANDOCERR_ARG_SKIP, + ln, pos, "eo %s", buf->buf + pos); + return ROFF_IGN; +} - if ('\0' != *p) - mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL); - - return(ROFF_IGN); +static int +roff_nop(ROFF_ARGS) +{ + while (buf->buf[pos] == ' ') + pos++; + *offs = pos; + return ROFF_RERUN; } -static enum rofferr +static int roff_tr(ROFF_ARGS) { const char *p, *first, *second; size_t fsz, ssz; enum mandoc_esc esc; - p = *bufp + pos; + p = buf->buf + pos; - if ('\0' == *p) { - mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL); - return(ROFF_IGN); + if (*p == '\0') { + mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr"); + return ROFF_IGN; } - while ('\0' != *p) { + while (*p != '\0') { fsz = ssz = 1; first = p++; - if ('\\' == *first) { + if (*first == '\\') { esc = mandoc_escape(&p, NULL, NULL); - if (ESCAPE_ERROR == esc) { - mandoc_msg(MANDOCERR_BADESCAPE, - r->parse, ln, - (int)(p - *bufp), NULL); - return(ROFF_IGN); + if (esc == ESCAPE_ERROR) { + mandoc_msg(MANDOCERR_ESC_BAD, ln, + (int)(p - buf->buf), "%s", first); + return ROFF_IGN; } fsz = (size_t)(p - first); } second = p++; - if ('\\' == *second) { + if (*second == '\\') { esc = mandoc_escape(&p, NULL, NULL); - if (ESCAPE_ERROR == esc) { - mandoc_msg(MANDOCERR_BADESCAPE, - r->parse, ln, - (int)(p - *bufp), NULL); - return(ROFF_IGN); + if (esc == ESCAPE_ERROR) { + mandoc_msg(MANDOCERR_ESC_BAD, ln, + (int)(p - buf->buf), "%s", second); + return ROFF_IGN; } ssz = (size_t)(p - second); - } else if ('\0' == *second) { - mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, - ln, (int)(p - *bufp), NULL); + } else if (*second == '\0') { + mandoc_msg(MANDOCERR_TR_ODD, ln, + (int)(first - buf->buf), "tr %s", first); second = " "; p--; } @@ -1914,7 +3763,7 @@ roff_tr(ROFF_ARGS) continue; } - if (NULL == r->xtab) + if (r->xtab == NULL) r->xtab = mandoc_calloc(128, sizeof(struct roffstr)); @@ -1923,16 +3772,115 @@ roff_tr(ROFF_ARGS) r->xtab[(int)*first].sz = ssz; } - return(ROFF_IGN); + return ROFF_IGN; } -static enum rofferr +/* + * Implementation of the .return request. + * There is no need to call roff_userret() from here. + * The read module will call that after rewinding the reader stack + * to the place from where the current macro was called. + */ +static int +roff_return(ROFF_ARGS) +{ + if (r->mstackpos >= 0) + return ROFF_IGN | ROFF_USERRET; + + mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return"); + return ROFF_IGN; +} + +static int +roff_rn(ROFF_ARGS) +{ + const char *value; + char *oldn, *newn, *end; + size_t oldsz, newsz; + int deftype; + + oldn = newn = buf->buf + pos; + if (*oldn == '\0') + return ROFF_IGN; + + oldsz = roff_getname(r, &newn, ln, pos); + if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0') + return ROFF_IGN; + + end = newn; + newsz = roff_getname(r, &end, ln, newn - buf->buf); + if (newsz == 0) + return ROFF_IGN; + + deftype = ROFFDEF_ANY; + value = roff_getstrn(r, oldn, oldsz, &deftype); + switch (deftype) { + case ROFFDEF_USER: + roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0); + roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0); + roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0); + break; + case ROFFDEF_PRE: + roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0); + roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0); + break; + case ROFFDEF_REN: + roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0); + roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0); + roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0); + break; + case ROFFDEF_STD: + roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0); + roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0); + break; + default: + roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0); + roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0); + break; + } + return ROFF_IGN; +} + +static int +roff_shift(ROFF_ARGS) +{ + struct mctx *ctx; + int levels, i; + + levels = 1; + if (buf->buf[pos] != '\0' && + roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) { + mandoc_msg(MANDOCERR_CE_NONUM, + ln, pos, "shift %s", buf->buf + pos); + levels = 1; + } + if (r->mstackpos < 0) { + mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift"); + return ROFF_IGN; + } + ctx = r->mstack + r->mstackpos; + if (levels > ctx->argc) { + mandoc_msg(MANDOCERR_SHIFT, + ln, pos, "%d, but max is %d", levels, ctx->argc); + levels = ctx->argc; + } + if (levels == 0) + return ROFF_IGN; + for (i = 0; i < levels; i++) + free(ctx->argv[i]); + ctx->argc -= levels; + for (i = 0; i < ctx->argc; i++) + ctx->argv[i] = ctx->argv[i + levels]; + return ROFF_IGN; +} + +static int roff_so(ROFF_ARGS) { - char *name; + char *name, *cp; - name = *bufp + pos; - mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, ".so %s", name); + name = buf->buf + pos; + mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name); /* * Handle `so'. Be EXTREMELY careful, as we shouldn't be @@ -1941,65 +3889,106 @@ roff_so(ROFF_ARGS) * or using absolute paths. */ - if ('/' == *name || strstr(name, "../") || strstr(name, "/..")) { - mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos, - ".so %s", name); - return(ROFF_ERR); + if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) { + mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name); + buf->sz = mandoc_asprintf(&cp, + ".sp\nSee the file %s.\n.sp", name) + 1; + free(buf->buf); + buf->buf = cp; + *offs = 0; + return ROFF_REPARSE; } *offs = pos; - return(ROFF_SO); + return ROFF_SO; } -static enum rofferr +/* --- user defined strings and macros ------------------------------------ */ + +static int roff_userdef(ROFF_ARGS) { - const char *arg[9]; - char *cp, *n1, *n2; - int i; + struct mctx *ctx; + char *arg, *ap, *dst, *src; + size_t sz; - /* - * Collect pointers to macro argument strings - * and NUL-terminate them. - */ - cp = *bufp + pos; - for (i = 0; i < 9; i++) - arg[i] = '\0' == *cp ? "" : - mandoc_getarg(r->parse, &cp, ln, &pos); + /* If the macro is empty, ignore it altogether. */ + if (*r->current_string == '\0') + return ROFF_IGN; + + /* Initialize a new macro stack context. */ + + if (++r->mstackpos == r->mstacksz) { + r->mstack = mandoc_recallocarray(r->mstack, + r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack)); + r->mstacksz += 8; + } + ctx = r->mstack + r->mstackpos; + ctx->argsz = 0; + ctx->argc = 0; + ctx->argv = NULL; + /* - * Expand macro arguments. + * Collect pointers to macro argument strings, + * NUL-terminating them and escaping quotes. */ - *szp = 0; - n1 = cp = mandoc_strdup(r->current_string); - while (NULL != (cp = strstr(cp, "\\$"))) { - i = cp[2] - '1'; - if (0 > i || 8 < i) { - /* Not an argument invocation. */ - cp += 2; - continue; + + src = buf->buf + pos; + while (*src != '\0') { + if (ctx->argc == ctx->argsz) { + ctx->argsz += 8; + ctx->argv = mandoc_reallocarray(ctx->argv, + ctx->argsz, sizeof(*ctx->argv)); } - *cp = '\0'; - *szp = mandoc_asprintf(&n2, "%s%s%s", - n1, arg[i], cp + 3) + 1; - cp = n2 + (cp - n1); - free(n1); - n1 = n2; + arg = roff_getarg(r, &src, ln, &pos); + sz = 1; /* For the terminating NUL. */ + for (ap = arg; *ap != '\0'; ap++) + sz += *ap == '"' ? 4 : 1; + ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz); + for (ap = arg; *ap != '\0'; ap++) { + if (*ap == '"') { + memcpy(dst, "\\(dq", 4); + dst += 4; + } else + *dst++ = *ap; + } + *dst = '\0'; + free(arg); } - /* - * Replace the macro invocation - * by the expanded macro. - */ - free(*bufp); - *bufp = n1; - if (0 == *szp) - *szp = strlen(*bufp) + 1; + /* Replace the macro invocation by the macro definition. */ - return(*szp > 1 && '\n' == (*bufp)[(int)*szp - 2] ? - ROFF_REPARSE : ROFF_APPEND); + free(buf->buf); + buf->buf = mandoc_strdup(r->current_string); + buf->sz = strlen(buf->buf) + 1; + *offs = 0; + + return buf->buf[buf->sz - 2] == '\n' ? + ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND; } +/* + * Calling a high-level macro that was renamed with .rn. + * r->current_string has already been set up by roff_parse(). + */ +static int +roff_renamed(ROFF_ARGS) +{ + char *nbuf; + + buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string, + buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1; + free(buf->buf); + buf->buf = nbuf; + *offs = 0; + return ROFF_CONT; +} + +/* + * Measure the length in bytes of the roff identifier at *cpp + * and advance the pointer to the next word. + */ static size_t roff_getname(struct roff *r, char **cpp, int ln, int pos) { @@ -2007,32 +3996,38 @@ roff_getname(struct roff *r, char **cpp, int ln, int p size_t namesz; name = *cpp; - if ('\0' == *name) - return(0); + if (*name == '\0') + return 0; - /* Read until end of name and terminate it with NUL. */ + /* Advance cp to the byte after the end of the name. */ + for (cp = name; 1; cp++) { - if ('\0' == *cp || ' ' == *cp) { - namesz = cp - name; + namesz = cp - name; + if (*cp == '\0') break; + if (*cp == ' ' || *cp == '\t') { + cp++; + break; } - if ('\\' != *cp) + if (*cp != '\\') continue; - cp++; - if ('\\' == *cp) + if (cp[1] == '{' || cp[1] == '}') + break; + if (*++cp == '\\') continue; - namesz = cp - name - 1; - mandoc_msg(MANDOCERR_NAMESC, r->parse, ln, pos, NULL); + mandoc_msg(MANDOCERR_NAMESC, ln, pos, + "%.*s", (int)(cp - name + 1), name); mandoc_escape((const char **)&cp, NULL, NULL); break; } /* Read past spaces. */ - while (' ' == *cp) + + while (*cp == ' ') cp++; *cpp = cp; - return(namesz); + return namesz; } /* @@ -2046,9 +4041,12 @@ static void roff_setstr(struct roff *r, const char *name, const char *string, int append) { + size_t namesz; - roff_setstrn(&r->strtab, name, strlen(name), string, + namesz = strlen(name); + roff_setstrn(&r->strtab, name, namesz, string, string ? strlen(string) : 0, append); + roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0); } static void @@ -2124,22 +4122,97 @@ roff_setstrn(struct roffkv **r, const char *name, size } static const char * -roff_getstrn(const struct roff *r, const char *name, size_t len) +roff_getstrn(struct roff *r, const char *name, size_t len, + int *deftype) { - const struct roffkv *n; - int i; + const struct roffkv *n; + int found, i; + enum roff_tok tok; - for (n = r->strtab; n; n = n->next) - if (0 == strncmp(name, n->key.p, len) && - '\0' == n->key.p[(int)len]) - return(n->val.p); + found = 0; + for (n = r->strtab; n != NULL; n = n->next) { + if (strncmp(name, n->key.p, len) != 0 || + n->key.p[len] != '\0' || n->val.p == NULL) + continue; + if (*deftype & ROFFDEF_USER) { + *deftype = ROFFDEF_USER; + return n->val.p; + } else { + found = 1; + break; + } + } + for (n = r->rentab; n != NULL; n = n->next) { + if (strncmp(name, n->key.p, len) != 0 || + n->key.p[len] != '\0' || n->val.p == NULL) + continue; + if (*deftype & ROFFDEF_REN) { + *deftype = ROFFDEF_REN; + return n->val.p; + } else { + found = 1; + break; + } + } + for (i = 0; i < PREDEFS_MAX; i++) { + if (strncmp(name, predefs[i].name, len) != 0 || + predefs[i].name[len] != '\0') + continue; + if (*deftype & ROFFDEF_PRE) { + *deftype = ROFFDEF_PRE; + return predefs[i].str; + } else { + found = 1; + break; + } + } + if (r->man->meta.macroset != MACROSET_MAN) { + for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) { + if (strncmp(name, roff_name[tok], len) != 0 || + roff_name[tok][len] != '\0') + continue; + if (*deftype & ROFFDEF_STD) { + *deftype = ROFFDEF_STD; + return NULL; + } else { + found = 1; + break; + } + } + } + if (r->man->meta.macroset != MACROSET_MDOC) { + for (tok = MAN_TH; tok < MAN_MAX; tok++) { + if (strncmp(name, roff_name[tok], len) != 0 || + roff_name[tok][len] != '\0') + continue; + if (*deftype & ROFFDEF_STD) { + *deftype = ROFFDEF_STD; + return NULL; + } else { + found = 1; + break; + } + } + } - for (i = 0; i < PREDEFS_MAX; i++) - if (0 == strncmp(name, predefs[i].name, len) && - '\0' == predefs[i].name[(int)len]) - return(predefs[i].str); + if (found == 0 && *deftype != ROFFDEF_ANY) { + if (*deftype & ROFFDEF_REN) { + /* + * This might still be a request, + * so do not treat it as undefined yet. + */ + *deftype = ROFFDEF_UNDEF; + return NULL; + } - return(NULL); + /* Using an undefined string defines it to be empty. */ + + roff_setstrn(&r->strtab, name, len, "", 0, 0); + roff_setstrn(&r->rentab, name, len, NULL, 0, 0); + } + + *deftype = 0; + return NULL; } static void @@ -2155,20 +4228,8 @@ roff_freestr(struct roffkv *r) } } -const struct tbl_span * -roff_span(const struct roff *r) -{ +/* --- accessors and utility functions ------------------------------------ */ - return(r->tbl ? tbl_span(r->tbl) : NULL); -} - -const struct eqn * -roff_eqn(const struct roff *r) -{ - - return(r->last_eqn ? &r->last_eqn->eqn : NULL); -} - /* * Duplicate an input string, making the appropriate character * conversations (as stipulated by `tr') along the way. @@ -2184,9 +4245,9 @@ roff_strdup(const struct roff *r, const char *p) enum mandoc_esc esc; if (NULL == r->xmbtab && NULL == r->xtab) - return(mandoc_strdup(p)); + return mandoc_strdup(p); else if ('\0' == *p) - return(mandoc_strdup("")); + return mandoc_strdup(""); /* * Step through each character looking for term matches @@ -2200,7 +4261,8 @@ roff_strdup(const struct roff *r, const char *p) ssz = 0; while ('\0' != *p) { - if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) { + assert((unsigned int)*p < 128); + if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) { sz = r->xtab[(int)*p].sz; res = mandoc_realloc(res, ssz + sz + 1); memcpy(res + ssz, r->xtab[(int)*p].p, sz); @@ -2249,7 +4311,7 @@ roff_strdup(const struct roff *r, const char *p) /* * We bail out on bad escapes. * No need to warn: we already did so when - * roff_res() was called. + * roff_expand() was called. */ sz = (int)(p - pp); res = mandoc_realloc(res, ssz + sz + 1); @@ -2258,9 +4320,16 @@ roff_strdup(const struct roff *r, const char *p) } res[(int)ssz] = '\0'; - return(res); + return res; } +int +roff_getformat(const struct roff *r) +{ + + return r->format; +} + /* * Find out whether a line is a macro line or not. * If it is, adjust the current position and return one; if it isn't, @@ -2278,20 +4347,20 @@ roff_getcontrol(const struct roff *r, const char *cp, pos = *ppos; - if (0 != r->control && cp[pos] == r->control) + if (r->control != '\0' && cp[pos] == r->control) pos++; - else if (0 != r->control) - return(0); + else if (r->control != '\0') + return 0; else if ('\\' == cp[pos] && '.' == cp[pos + 1]) pos += 2; else if ('.' == cp[pos] || '\'' == cp[pos]) pos++; else - return(0); + return 0; while (' ' == cp[pos] || '\t' == cp[pos]) pos++; *ppos = pos; - return(1); + return 1; }