mandoc/roff.c - diff

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Diff for /mandoc/roff.c between version 1.299 and 1.380

version 1.299, 2017/05/05 15:17:32

version 1.380, 2021/10/04 14:19:14

Line 1

/* $Id$ */

* Permission to use, copy, modify, and distribute this software for any

* purpose with or without fee is hereby granted, provided that the above

Line 14

* 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).

#include "config.h"

Line 28

Line 30

#include <stdlib.h>

#include <string.h>

#include "mandoc.h"

#include "mandoc_aux.h"

#include "mandoc_ohash.h"

#include "mandoc.h"

#include "roff.h"

#include "mandoc_parse.h"

#include "libmandoc.h"

#include "roff_int.h"

#include "libroff.h"

#include "tbl_parse.h"

#include "eqn_parse.h"

* 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

/* 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 --------------------------------------------------------- */

Line 64 struct roffkv {

Line 85 struct roffkv {

struct roffreg {

struct roffstr key;

int val;

int step;

struct roffreg *next;

};

Line 75 struct roffreq {

Line 97 struct roffreq {

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 */

struct roff_man *man; /* mdoc or man parser */

struct roffnode *last; /* leaf of stack */

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 *last_eqn; /* equation parser */

struct eqn_node *first_eqn; /* first equation parsed */

struct eqn_node *eqn; /* active equation parser */

struct eqn_node *eqn; /* current equation being parsed */

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 */

int argc; /* number of args of the last macro */

char control; /* control character */

char escape; /* escape character */

};

* A macro definition, condition, or ignored block.

struct roffnode {

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 */

char *end; /* custom end macro of the block */

int endspan; /* end-rules: next-line or infty */

int endspan; /* scope to: 1=eol 2=next line -1=\} */

int rule; /* current evaluation rule */

int rule; /* content is: 1=evaluated 0=skipped */

};

#define ROFF_ARGS struct roff *r, /* parse ctx */ \

Line 120 struct roffnode {

Line 157 struct roffnode {

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 {

roffproc proc; /* process new macro */

Line 140 struct predef {

Line 177 struct predef {

/* --- function prototypes ------------------------------------------------ */

static void roffnode_cleanscope(struct roff *);

static int roffnode_cleanscope(struct roff *);

static void roffnode_pop(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 void roff_addtbl(struct roff_man *, int, struct tbl_node *);

static enum rofferr roff_block_text(ROFF_ARGS);

static int roff_als(ROFF_ARGS);

static enum rofferr roff_block_sub(ROFF_ARGS);

static int roff_block(ROFF_ARGS);

static enum rofferr roff_br(ROFF_ARGS);

static int roff_block_text(ROFF_ARGS);

static enum rofferr roff_cblock(ROFF_ARGS);

static int roff_block_sub(ROFF_ARGS);

static enum rofferr roff_cc(ROFF_ARGS);

static int roff_break(ROFF_ARGS);

static void roff_ccond(struct roff *, int, int);

static int roff_cblock(ROFF_ARGS);

static enum rofferr roff_cond(ROFF_ARGS);

static int roff_cc(ROFF_ARGS);

static enum rofferr roff_cond_text(ROFF_ARGS);

static int roff_ccond(struct roff *, int, int);

static enum rofferr roff_cond_sub(ROFF_ARGS);

static int roff_char(ROFF_ARGS);

static enum rofferr roff_ds(ROFF_ARGS);

static int roff_cond(ROFF_ARGS);

static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);

static int roff_cond_checkend(ROFF_ARGS);

static int roff_evalcond(struct roff *r, int, char *, int *);

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 *, 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);

const char *, size_t, char);

static int roff_getregro(const struct roff *,

const char *name);

static const char *roff_getstrn(const struct roff *,

static const char *roff_getstrn(struct roff *,

const char *, size_t);

const char *, size_t, int *);

static int roff_hasregn(const struct roff *,

const char *, size_t);

static enum rofferr roff_insec(ROFF_ARGS);

static int roff_insec(ROFF_ARGS);

static enum rofferr roff_it(ROFF_ARGS);

static int roff_it(ROFF_ARGS);

static enum rofferr roff_line_ignore(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 enum rofferr roff_nr(ROFF_ARGS);

static int roff_manyarg(ROFF_ARGS);

static enum rofferr roff_onearg(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(struct buf *, int, int *);

static int roff_parsetext(struct roff *, struct buf *,

static enum rofferr roff_res(struct roff *, struct buf *, int, int);

int, int *);

static enum rofferr roff_rm(ROFF_ARGS);

static int roff_renamed(ROFF_ARGS);

static enum rofferr roff_rr(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 int roff_shift(ROFF_ARGS);

static enum rofferr roff_tr(ROFF_ARGS);

static int roff_so(ROFF_ARGS);

static enum rofferr roff_Dd(ROFF_ARGS);

static int roff_tr(ROFF_ARGS);

static enum rofferr roff_TH(ROFF_ARGS);

static int roff_Dd(ROFF_ARGS);

static enum rofferr roff_TE(ROFF_ARGS);

static int roff_TE(ROFF_ARGS);

static enum rofferr roff_TS(ROFF_ARGS);

static int roff_TS(ROFF_ARGS);

static enum rofferr roff_EQ(ROFF_ARGS);

static int roff_EQ(ROFF_ARGS);

static enum rofferr roff_EN(ROFF_ARGS);

static int roff_EN(ROFF_ARGS);

static enum rofferr roff_T_(ROFF_ARGS);

static int roff_T_(ROFF_ARGS);

static enum rofferr roff_unsupp(ROFF_ARGS);

static int roff_unsupp(ROFF_ARGS);

static enum rofferr roff_userdef(ROFF_ARGS);

static int roff_userdef(ROFF_ARGS);

/* --- constant data ------------------------------------------------------ */

Line 211 static enum rofferr roff_userdef(ROFF_ARGS);

Line 264 static enum rofferr roff_userdef(ROFF_ARGS);

#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */

const char *__roff_name[MAN_MAX + 1] = {

"br", "ft", "ll", "sp",

"br", "ce", "fi", "ft",

NULL,

"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", "ce",

"brpnl", "c2", "cc",

"cf", "cflags", "ch", "char",

"chop", "class", "close", "CL",

"color", "composite", "continue", "cp",

Line 245 const char *__roff_name[MAN_MAX + 1] = {

Line 300 const char *__roff_name[MAN_MAX + 1] = {

"lc", "lc_ctype", "lds", "length",

"letadj", "lf", "lg", "lhang",

"linetabs", "lnr", "lnrf", "lpfx",

"ls", "lsm", "lt", "mc",

"ls", "lsm", "lt",

"mediasize", "minss", "mk", "mso",

"na", "ne", "nh", "nhychar",

"nm", "nn", "nop", "nr",

Line 253 const char *__roff_name[MAN_MAX + 1] = {

Line 308 const char *__roff_name[MAN_MAX + 1] = {

"open", "opena", "os", "output",

"padj", "papersize", "pc", "pev",

"pi", "PI", "pl", "pm",

"pn", "pnr", "po", "ps",

"pn", "pnr", "ps",

"psbb", "pshape", "pso", "ptr",

"pvs", "rchar", "rd", "recursionlimit",

"return", "rfschar", "rhang", "rj",

"return", "rfschar", "rhang",

"rm", "rn", "rnn", "rr",

"rs", "rt", "schar", "sentchar",

"shc", "shift", "sizes", "so",

"spacewidth", "special", "spreadwarn", "ss",

"sty", "substring", "sv", "sy",

"T&", "ta", "tc", "TE",

"T&", "tc", "TE",

"TH", "ti", "tkf", "tl",

"TH", "tkf", "tl",

"tm", "tm1", "tmc", "tr",

"track", "transchar", "trf", "trimat",

"trin", "trnt", "troff", "TS",

Line 272 const char *__roff_name[MAN_MAX + 1] = {

Line 327 const char *__roff_name[MAN_MAX + 1] = {

"warnscale", "watch", "watchlength", "watchn",

"wh", "while", "write", "writec",

"writem", "xflag", ".", NULL,

"text",

NULL, "text",

"Dd", "Dt", "Os", "Sh",

"Ss", "Pp", "D1", "Dl",

"Bd", "Ed", "Bl", "El",

Line 303 const char *__roff_name[MAN_MAX + 1] = {

Line 358 const char *__roff_name[MAN_MAX + 1] = {

"Lk", "Mt", "Brq", "Bro",

"Brc", "%C", "Es", "En",

"Dx", "%Q", "%U", "Ta",

NULL,

"Tg", NULL,

"TH", "SH", "SS", "TP",

"TQ",

"LP", "PP", "P", "IP",

"HP", "SM", "SB", "BI",

"IB", "BR", "RB", "R",

"B", "I", "IR", "RI",

"nf", "fi",

"RE", "RS", "DT", "UC",

"PD", "AT", "in",

"OP", "EX", "EE", "UR",

"SY", "YS", "OP",

"UE", NULL

"EX", "EE", "UR",

"UE", "MT", "ME", NULL

};

const char *const *roff_name = __roff_name;

static struct roffmac roffs[TOKEN_NONE] = {

{ roff_br, NULL, NULL, 0 }, /* br */

{ 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_unsupp, NULL, NULL, 0 }, /* als */

{ 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 */

Line 343 static struct roffmac roffs[TOKEN_NONE] = {

Line 407 static struct roffmac roffs[TOKEN_NONE] = {

{ roff_unsupp, NULL, NULL, 0 }, /* boxa */

{ roff_line_ignore, NULL, NULL, 0 }, /* bp */

{ roff_unsupp, NULL, NULL, 0 }, /* BP */

{ roff_unsupp, NULL, NULL, 0 }, /* break */

{ roff_break, NULL, NULL, 0 }, /* break */

{ roff_line_ignore, NULL, NULL, 0 }, /* breakchar */

{ roff_line_ignore, NULL, NULL, 0 }, /* brnl */

{ roff_br, NULL, NULL, 0 }, /* brp */

{ 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_line_ignore, NULL, NULL, 0 }, /* ce */

{ roff_insec, NULL, NULL, 0 }, /* cf */

{ roff_line_ignore, NULL, NULL, 0 }, /* cflags */

{ roff_line_ignore, NULL, NULL, 0 }, /* ch */

{ roff_unsupp, NULL, NULL, 0 }, /* char */

{ 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 */

Line 382 static struct roffmac roffs[TOKEN_NONE] = {

Line 445 static struct roffmac roffs[TOKEN_NONE] = {

{ roff_ds, NULL, NULL, 0 }, /* ds1 */

{ roff_unsupp, NULL, NULL, 0 }, /* dwh */

{ roff_unsupp, NULL, NULL, 0 }, /* dt */

{ roff_unsupp, NULL, NULL, 0 }, /* ec */

{ 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_unsupp, NULL, NULL, 0 }, /* eo */

{ 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 */

Line 454 static struct roffmac roffs[TOKEN_NONE] = {

Line 517 static struct roffmac roffs[TOKEN_NONE] = {

{ 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 }, /* mc */

{ roff_line_ignore, NULL, NULL, 0 }, /* mediasize */

{ roff_line_ignore, NULL, NULL, 0 }, /* minss */

{ roff_line_ignore, NULL, NULL, 0 }, /* mk */

Line 465 static struct roffmac roffs[TOKEN_NONE] = {

Line 527 static struct roffmac roffs[TOKEN_NONE] = {

{ roff_line_ignore, NULL, NULL, 0 }, /* nhychar */

{ roff_unsupp, NULL, NULL, 0 }, /* nm */

{ roff_unsupp, NULL, NULL, 0 }, /* nn */

{ roff_unsupp, NULL, NULL, 0 }, /* nop */

{ 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 */

Line 485 static struct roffmac roffs[TOKEN_NONE] = {

Line 547 static struct roffmac roffs[TOKEN_NONE] = {

{ 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 }, /* po */

{ roff_line_ignore, NULL, NULL, 0 }, /* ps */

{ roff_unsupp, NULL, NULL, 0 }, /* psbb */

{ roff_unsupp, NULL, NULL, 0 }, /* pshape */

Line 495 static struct roffmac roffs[TOKEN_NONE] = {

Line 556 static struct roffmac roffs[TOKEN_NONE] = {

{ roff_unsupp, NULL, NULL, 0 }, /* rchar */

{ roff_line_ignore, NULL, NULL, 0 }, /* rd */

{ roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */

{ roff_unsupp, NULL, NULL, 0 }, /* return */

{ roff_return, NULL, NULL, 0 }, /* return */

{ roff_unsupp, NULL, NULL, 0 }, /* rfschar */

{ roff_line_ignore, NULL, NULL, 0 }, /* rhang */

{ roff_line_ignore, NULL, NULL, 0 }, /* rj */

{ roff_rm, NULL, NULL, 0 }, /* rm */

{ roff_unsupp, NULL, NULL, 0 }, /* rn */

{ 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 */

Line 508 static struct roffmac roffs[TOKEN_NONE] = {

Line 568 static struct roffmac roffs[TOKEN_NONE] = {

{ roff_unsupp, NULL, NULL, 0 }, /* schar */

{ roff_line_ignore, NULL, NULL, 0 }, /* sentchar */

{ roff_line_ignore, NULL, NULL, 0 }, /* shc */

{ roff_unsupp, NULL, NULL, 0 }, /* shift */

{ 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 */

Line 520 static struct roffmac roffs[TOKEN_NONE] = {

Line 580 static struct roffmac roffs[TOKEN_NONE] = {

{ roff_line_ignore, NULL, NULL, 0 }, /* sv */

{ roff_insec, NULL, NULL, 0 }, /* sy */

{ roff_T_, NULL, NULL, 0 }, /* T& */

{ roff_unsupp, NULL, NULL, 0 }, /* ta */

{ roff_unsupp, NULL, NULL, 0 }, /* tc */

{ roff_TE, NULL, NULL, 0 }, /* TE */

{ roff_TH, NULL, NULL, 0 }, /* TH */

{ roff_Dd, NULL, NULL, 0 }, /* TH */

{ roff_unsupp, NULL, NULL, 0 }, /* ti */

{ roff_line_ignore, NULL, NULL, 0 }, /* tkf */

{ roff_unsupp, NULL, NULL, 0 }, /* tl */

{ roff_line_ignore, NULL, NULL, 0 }, /* tm */

Line 552 static struct roffmac roffs[TOKEN_NONE] = {

Line 610 static struct roffmac roffs[TOKEN_NONE] = {

{ roff_line_ignore, NULL, NULL, 0 }, /* watchlength */

{ roff_line_ignore, NULL, NULL, 0 }, /* watchn */

{ roff_unsupp, NULL, NULL, 0 }, /* wh */

{ roff_unsupp, NULL, NULL, 0 }, /* while */

{ 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: 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

};

/* 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"

};

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 */

Line 664 roffhash_find(struct ohash *htab, const char *name, si

Line 692 roffhash_find(struct ohash *htab, const char *name, si

* 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;

inloop = p->tok == ROFF_while;

r->last = r->last->parent;

r->last = p->parent;

free(p->name);

free(p->end);

free(p);

return inloop;

}

Line 707 roffnode_push(struct roff *r, enum roff_tok tok, const

Line 736 roffnode_push(struct roff *r, enum roff_tok tok, const

static void

roff_free1(struct roff *r)

{

struct tbl_node *tbl;

struct eqn_node *e;

int i;

while (NULL != (tbl = r->first_tbl)) {

tbl_free(r->first_tbl);

r->first_tbl = tbl->next;

tbl_free(tbl);

}

r->first_tbl = r->last_tbl = r->tbl = NULL;

while (NULL != (e = r->first_eqn)) {

eqn_free(r->last_eqn);

r->first_eqn = e->next;

r->last_eqn = r->eqn = NULL;

eqn_free(e);

}

r->first_eqn = r->last_eqn = r->eqn = NULL;

while (r->mstackpos >= 0)

roff_userret(r);

while (r->last)

roffnode_pop(r);

Line 735 roff_free1(struct roff *r)

Line 759 roff_free1(struct roff *r)

r->regtab = NULL;

roff_freestr(r->strtab);

roff_freestr(r->rentab);

roff_freestr(r->xmbtab);

r->strtab = r->xmbtab = NULL;

r->strtab = r->rentab = r->xmbtab = NULL;

if (r->xtab)

for (i = 0; i < 128; i++)

Line 749 void

Line 774 void

roff_reset(struct roff *r)

{

roff_free1(r);

r->options |= MPARSE_COMMENT;

r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);

r->control = 0;

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->reqtab = roffhash_alloc(0, ROFF_RENAMED);

r->reqtab = roffhash_alloc(0, ROFF_USERDEF);

r->options = options | MPARSE_COMMENT;

r->options = options;

r->format = options & (MPARSE_MDOC | MPARSE_MAN);

r->mstackpos = -1;

r->rstackpos = -1;

r->escape = '\\';

return r;

}

Line 780 roff_alloc(struct mparse *parse, int options)

Line 817 roff_alloc(struct mparse *parse, int options)

static void

roff_man_free1(struct roff_man *man)

{

if (man->meta.first != NULL)

if (man->first != NULL)

roff_node_delete(man, man->meta.first);

roff_node_delete(man, man->first);

free(man->meta.msec);

free(man->meta.vol);

free(man->meta.os);

Line 790 roff_man_free1(struct roff_man *man)

Line 826 roff_man_free1(struct roff_man *man)

free(man->meta.title);

free(man->meta.name);

free(man->meta.date);

free(man->meta.sodest);

}

static void

void

roff_man_alloc1(struct roff_man *man)

roff_state_reset(struct roff_man *man)

{

man->last = man->meta.first;

memset(&man->meta, 0, sizeof(man->meta));

man->first = mandoc_calloc(1, sizeof(*man->first));

man->first->type = ROFFT_ROOT;

man->last = man->first;

man->last_es = NULL;

man->flags = 0;

man->macroset = MACROSET_NONE;

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);

}

Line 818 roff_man_reset(struct roff_man *man)

Line 860 roff_man_reset(struct roff_man *man)

void

roff_man_free(struct roff_man *man)

{

roff_man_free1(man);

free(man->os_r);

free(man);

}

struct roff_man *

roff_man_alloc(struct roff *roff, struct mparse *parse,

roff_man_alloc(struct roff *roff, const char *os_s, int quick)

const char *defos, int quick)

{

struct roff_man *man;

man = mandoc_calloc(1, sizeof(*man));

man->parse = parse;

man->roff = roff;

man->defos = defos;

man->os_s = os_s;

man->quick = quick;

roff_man_alloc1(man);

roff->man = man;

Line 858 roff_node_alloc(struct roff_man *man, int line, int po

Line 898 roff_node_alloc(struct roff_man *man, int line, int po

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;

Line 989 roff_body_alloc(struct roff_man *man, int line, int po

Line 1033 roff_body_alloc(struct roff_man *man, int line, int po

return n;

}

void

static void

roff_addeqn(struct roff_man *man, const struct eqn *eqn)

roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)

{

struct roff_node *n;

struct tbl_span *span;

n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);

if (man->meta.macroset == MACROSET_MAN)

n->eqn = eqn;

man_breakscope(man, ROFF_TS);

if (eqn->ln > man->last->line)

while ((span = tbl_span(tbl)) != NULL) {

n->flags |= NODE_LINE;

n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);

roff_node_append(man, n);

n->span = span;

man->next = ROFF_NEXT_SIBLING;

roff_node_append(man, n);

n->flags |= NODE_VALID | NODE_ENDED;

man->next = ROFF_NEXT_SIBLING;

}

void

roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)

{

struct roff_node *n;

if (man->macroset == MACROSET_MAN)

man_breakscope(man, TOKEN_NONE);

n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);

n->span = tbl;

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)

{

Line 1049 roff_node_unlink(struct roff_man *man, struct roff_nod

Line 1083 roff_node_unlink(struct roff_man *man, struct roff_nod

man->next = ROFF_NEXT_SIBLING;

}

if (man->first == n)

if (man->meta.first == n)

man->first = NULL;

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)

{

Line 1061 roff_node_free(struct roff_node *n)

Line 1103 roff_node_free(struct roff_node *n)

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->tag);

free(n);

}

Line 1075 roff_node_delete(struct roff_man *man, struct roff_nod

Line 1119 roff_node_delete(struct roff_man *man, struct roff_nod

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;

return roff_tok_transparent(n->tok);

}

int

roff_tok_transparent(enum roff_tok tok)

{

switch (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->type != ROFFT_TEXT) {

if (n->string == NULL) {

for (n = n->child; n != NULL; n = n->next)

deroff(dest, n);

return;

Line 1127 deroff(char **dest, const struct roff_node *n)

Line 1230 deroff(char **dest, const struct roff_node *n)

/* --- main functions of the roff parser ---------------------------------- */

* In the current line, expand escape sequences that tend to get

* In the current line, expand escape sequences that produce parsable

* used in numerical expressions and conditional requests.

* input text. Also check the syntax of the remaining escape sequences,

* Also check the syntax of the remaining escape sequences.

* which typically produce output glyphs or change formatter state.

static enum rofferr

static int

roff_res(struct roff *r, struct buf *buf, int ln, int pos)

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 buf->buf to */

size_t maxl; /* expected length of the escape name */

size_t naml; /* actual length of the escape name */

enum mandoc_esc esc; /* type of the escape sequence */

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 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 */

expand_count = 0;

/* Search forward for comments. */

done = 0;

start = buf->buf + pos;

stesc = strchr(start, '\0') - 1;

for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {

while (stesc-- > start) {

if (stesc[0] != newesc || stesc[1] == '\0')

continue;

stesc++;

if (*stesc != '"' && *stesc != '#')

continue;

/* Search backwards for the next backslash. */

/* Comment found, look for RCS id. */

if (*stesc != '\\')

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;

while (stesc >= start) {

if (*stesc != newesc) {

* If we have a non-standard escape character,

* escape literal backslashes because all

* processing in subsequent functions uses

* the standard escaping rules.

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 ((stesc - cp) % 2 == 0) {

stesc = (char *)cp;

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':

Line 1184 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1414 roff_res(struct roff *r, struct buf *buf, int ln, int

term = cp[1];

/* FALLTHROUGH */

case 'n':

sign = cp[1];

if (sign == '+' || sign == '-')

cp++;

res = ubuf;

break;

default:

esc = mandoc_escape(&cp, &stnam, &inaml);

err = MANDOCERR_OK;

if (esc == ESCAPE_ERROR ||

switch(mandoc_escape(&cp, &stnam, &inaml)) {

(esc == ESCAPE_SPECIAL &&

case ESCAPE_SPECIAL:

mchars_spec2cp(stnam, inaml) < 0))

if (mchars_spec2cp(stnam, inaml) >= 0)

mandoc_vmsg(MANDOCERR_ESC_BAD,

break;

r->parse, ln, (int)(stesc - buf->buf),

/* 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,

mandoc_msg(MANDOCERR_ROFFLOOP,

ln, (int)(stesc - buf->buf), NULL);

return ROFF_IGN;

}

Line 1239 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1487 roff_res(struct roff *r, struct buf *buf, int ln, int

arg_complete = 1;

while (maxl == 0 || naml < maxl) {

if (*cp == '\0') {

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

mandoc_msg(MANDOCERR_ESC_BAD, ln,

ln, (int)(stesc - buf->buf), stesc);

(int)(stesc - buf->buf), "%s", stesc);

arg_complete = 0;

break;

}

Line 1248 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1496 roff_res(struct roff *r, struct buf *buf, int ln, int

cp++;

break;

}

if (*cp++ != '\\' || stesc[1] != 'w') {

if (*cp++ != '\\' || *esct != 'w') {

naml++;

continue;

}

Line 1256 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1504 roff_res(struct roff *r, struct buf *buf, int ln, int

case ESCAPE_SPECIAL:

case ESCAPE_UNICODE:

case ESCAPE_NUMBERED:

case ESCAPE_UNDEF:

case ESCAPE_OVERSTRIKE:

naml++;

break;

Line 1269 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1518 roff_res(struct roff *r, struct buf *buf, int ln, int

* undefined, resume searching for escapes.

switch (stesc[1]) {

switch (*esct) {

case '*':

if (arg_complete)

if (arg_complete) {

res = roff_getstrn(r, stnam, naml);

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;

ubuf[0] = arg_complete &&

Line 1285 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1603 roff_res(struct roff *r, struct buf *buf, int ln, int

case 'n':

if (arg_complete)

(void)snprintf(ubuf, sizeof(ubuf), "%d",

roff_getregn(r, stnam, naml));

roff_getregn(r, stnam, naml, sign));

else

ubuf[0] = '\0';

break;

Line 1297 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1615 roff_res(struct roff *r, struct buf *buf, int ln, int

}

if (res == NULL) {

mandoc_vmsg(MANDOCERR_STR_UNDEF,

if (*esct == '*')

r->parse, ln, (int)(stesc - buf->buf),

mandoc_msg(MANDOCERR_STR_UNDEF,

"%.*s", (int)naml, stnam);

ln, (int)(stesc - buf->buf),

"%.*s", (int)naml, stnam);

res = "";

} else if (buf->sz + strlen(res) > SHRT_MAX) {

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

mandoc_msg(MANDOCERR_ROFFLOOP,

ln, (int)(stesc - buf->buf), NULL);

return ROFF_IGN;

}

Line 1324 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1643 roff_res(struct roff *r, struct buf *buf, int ln, int

}

* 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.

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 enum rofferr

static int

roff_parsetext(struct buf *buf, int pos, int *offs)

roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)

{

size_t sz;

const char *start;

Line 1349 roff_parsetext(struct buf *buf, int pos, int *offs)

Line 1780 roff_parsetext(struct buf *buf, int pos, int *offs)

} 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;

Line 1382 roff_parsetext(struct buf *buf, int pos, int *offs)

Line 1823 roff_parsetext(struct buf *buf, int pos, int *offs)

return ROFF_CONT;

}

enum rofferr

int

roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)

roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)

{

enum roff_tok t;

enum rofferr e;

int e;

int pos; /* parse point */

int spos; /* saved parse point for messages */

int ppos; /* original offset in buf->buf */

Line 1394 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1835 roff_parseln(struct roff *r, int ln, struct buf *buf,

ppos = pos = *offs;

if (len > 80 && r->tbl == NULL && r->eqn == NULL &&

(r->man->flags & ROFF_NOFILL) == 0 &&

strchr(" .\\", buf->buf[pos]) == NULL &&

buf->buf[pos] != r->control &&

strcspn(buf->buf, " ") < 80)

mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,

"%.20s...", buf->buf + pos);

/* Handle in-line equation delimiters. */

if (r->tbl == NULL &&

Line 1407 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1856 roff_parseln(struct roff *r, int ln, struct buf *buf,

/* Expand some escape sequences. */

e = roff_res(r, buf, ln, pos);

e = roff_expand(r, buf, ln, pos, r->escape);

if (e == ROFF_IGN)

if ((e & ROFF_MASK) == ROFF_IGN)

return e;

assert(e == ROFF_CONT);

Line 1425 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1874 roff_parseln(struct roff *r, int ln, struct buf *buf,

if (r->last != NULL && ! ctl) {

t = r->last->tok;

e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);

if (e == ROFF_IGN)

if ((e & ROFF_MASK) == ROFF_IGN)

return e;

assert(e == ROFF_CONT);

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 != NULL)

if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {

return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);

tbl_read(r->tbl, ln, buf->buf, ppos);

if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))

roff_addtbl(r->man, ln, r->tbl);

return tbl_read(r->tbl, ln, buf->buf, ppos);

return e;

if ( ! ctl)

}

return roff_parsetext(buf, pos, offs);

if ( ! ctl) {

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, r->parse,

mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);

ln, pos, NULL);

return ROFF_IGN;

} else if (buf->buf[pos] == '\0')

return ROFF_IGN;

Line 1458 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1914 roff_parseln(struct roff *r, int ln, struct buf *buf,

/* 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)) {

if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||

mandoc_msg(MANDOCERR_TBLMACRO, r->parse,

t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {

ln, pos, buf->buf + spos);

mandoc_msg(MANDOCERR_TBLMACRO,

if (t == ROFF_TS)

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++;

return tbl_read(r->tbl, ln, buf->buf, 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;

}

* This is neither a roff request nor a user-defined macro.

* Let the standard macro set parsers handle it.

Line 1488 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1959 roff_parseln(struct roff *r, int ln, struct buf *buf,

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)

assert(r->mstackpos >= 0);

mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,

ctx = r->mstack + r->mstackpos;

r->last->line, r->last->col,

for (i = 0; i < ctx->argc; i++)

roff_name[r->last->tok]);

free(ctx->argv[i]);

ctx->argc = 0;

r->mstackpos--;

}

if (r->eqn) {

void

mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,

roff_endparse(struct roff *r)

r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");

{

eqn_end(&r->eqn);

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) {

if (r->tbl != NULL) {

mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,

tbl_end(r->tbl, 1);

r->tbl->line, r->tbl->pos, "TS");

r->tbl = NULL;

tbl_end(&r->tbl);

}

Line 1520 roff_parse(struct roff *r, char *buf, int *pos, int ln

Line 2008 roff_parse(struct roff *r, char *buf, int *pos, int ln

char *cp;

const char *mac;

size_t maclen;

int deftype;

enum roff_tok t;

cp = buf + *pos;

Line 1530 roff_parse(struct roff *r, char *buf, int *pos, int ln

Line 2019 roff_parse(struct roff *r, char *buf, int *pos, int ln

mac = cp;

maclen = roff_getname(r, &cp, ln, ppos);

t = (r->current_string = roff_getstrn(r, mac, maclen))

deftype = ROFFDEF_USER | ROFFDEF_REN;

? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);

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;

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;

}

/* --- handling of request blocks ----------------------------------------- */

static enum rofferr

* Close a macro definition block or an "ignore" block.

static int

roff_cblock(ROFF_ARGS)

{

int rr;

* A block-close `..' should only be invoked as a child of an

* ignore macro, otherwise raise a warning and just ignore it.

if (r->last == NULL) {

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");

ln, ppos, "..");

return ROFF_IGN;

}

switch (r->last->tok) {

case ROFF_am:

/* ROFF_am1 is remapped to ROFF_am in roff_block(). */

case ROFF_ami:

case ROFF_de:

/* ROFF_de1 is remapped to ROFF_de in roff_block(). */

case ROFF_dei:

case ROFF_ig:

break;

case ROFF_am1:

case ROFF_de1:

/* Remapped in roff_block(). */

abort();

default:

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");

ln, ppos, "..");

return ROFF_IGN;

}

roffnode_pop(r);

roffnode_cleanscope(r);

* If a conditional block with braces is still open,

* check for "\}" block end markers.

if (r->last != NULL && r->last->endspan < 0) {

rr = 1; /* If arguments follow "\}", warn about them. */

roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);

}

if (buf->buf[pos] != '\0')

mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,

mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,

".. %s", buf->buf + pos);

roffnode_pop(r);

roffnode_cleanscope(r);

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 && r->last->endspan > 0) {

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_BLK_NOTOPEN, r->parse,

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");

ln, ppos, "\\}");

return 0;

return;

}

switch (r->last->tok) {

case ROFF_el:

case ROFF_ie:

case ROFF_if:

case ROFF_while:

break;

default:

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");

ln, ppos, "\\}");

return 0;

return;

}

if (r->last->endspan > -1) {

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");

ln, ppos, "\\}");

return 0;

return;

}

roffnode_pop(r);

return roffnode_pop(r) + roffnode_cleanscope(r);

roffnode_cleanscope(r);

return;

}

static enum rofferr

static int

roff_block(ROFF_ARGS)

{

const char *name;

const char *name, *value;

char *iname, *cp;

char *call, *cp, *iname, *rname;

size_t namesz;

size_t csz, namesz, rsz;

int deftype;

/* Ignore groff compatibility mode for now. */

Line 1657 roff_block(ROFF_ARGS)

Line 2177 roff_block(ROFF_ARGS)

/* Resolve the macro name argument if it is indirect. */

if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {

if ((name = roff_getstrn(r, iname, namesz)) == NULL) {

deftype = ROFFDEF_USER;

mandoc_vmsg(MANDOCERR_STR_UNDEF,

name = roff_getstrn(r, iname, namesz, &deftype);

r->parse, ln, (int)(iname - buf->buf),

if (name == NULL) {

mandoc_msg(MANDOCERR_STR_UNDEF,

ln, (int)(iname - buf->buf),

"%.*s", (int)namesz, iname);

namesz = 0;

} else

Line 1668 roff_block(ROFF_ARGS)

Line 2190 roff_block(ROFF_ARGS)

name = iname;

if (namesz == 0 && tok != ROFF_ig) {

mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,

mandoc_msg(MANDOCERR_REQ_EMPTY,

ln, ppos, roff_name[tok]);

ln, ppos, "%s", roff_name[tok]);

return ROFF_IGN;

}

Line 1681 roff_block(ROFF_ARGS)

Line 2203 roff_block(ROFF_ARGS)

* appended from roff_block_text() in multiline mode.

if (tok == ROFF_de || tok == ROFF_dei)

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 (*cp == '\0')

return ROFF_IGN;

Line 1695 roff_block(ROFF_ARGS)

Line 2246 roff_block(ROFF_ARGS)

/* Resolve the end marker if it is indirect. */

if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {

if ((name = roff_getstrn(r, iname, namesz)) == NULL) {

deftype = ROFFDEF_USER;

mandoc_vmsg(MANDOCERR_STR_UNDEF,

name = roff_getstrn(r, iname, namesz, &deftype);

r->parse, ln, (int)(iname - buf->buf),

if (name == NULL) {

mandoc_msg(MANDOCERR_STR_UNDEF,

ln, (int)(iname - buf->buf),

"%.*s", (int)namesz, iname);

namesz = 0;

} else

Line 1709 roff_block(ROFF_ARGS)

Line 2262 roff_block(ROFF_ARGS)

r->last->end = mandoc_strndup(name, namesz);

if (*cp != '\0')

mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,

mandoc_msg(MANDOCERR_ARG_EXCESS,

ln, pos, ".%s ... %s", roff_name[tok], cp);

return ROFF_IGN;

}

static enum rofferr

static int

roff_block_sub(ROFF_ARGS)

{

enum roff_tok t;

Line 1769 roff_block_sub(ROFF_ARGS)

Line 2322 roff_block_sub(ROFF_ARGS)

return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);

}

static enum rofferr

static int

roff_block_text(ROFF_ARGS)

{

Line 1779 roff_block_text(ROFF_ARGS)

Line 2332 roff_block_text(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

roff_cond_sub(ROFF_ARGS)

* Check for a closing "\}" and handle it.

* In this function, the final "int *offs" argument is used for

* different purposes than elsewhere:

* Input: *offs == 0: caller wants to discard arguments following \}

* *offs == 1: caller wants to preserve text following \}

* Output: *offs = 0: tell caller to discard input line

* *offs = 1: tell caller to use input line

static int

roff_cond_checkend(ROFF_ARGS)

{

enum roff_tok t;

char *ep;

int rr;

int endloop, irc, rr;

irc = ROFF_IGN;

rr = r->last->rule;

roffnode_cleanscope(r);

endloop = tok != ROFF_while ? ROFF_IGN :

t = roff_parse(r, buf->buf, &pos, ln, ppos);

rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;

if (roffnode_cleanscope(r))

irc |= endloop;

* Fully handle known macros when they are structurally

* If "\}" occurs on a macro line without a preceding macro or

* required or when the conditional evaluated to true.

* a text line contains nothing else, drop the line completely.

if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))

ep = buf->buf + pos;

return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);

if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))

rr = 0;

* If `\}' occurs on a macro line without a preceding macro,

* The closing delimiter "\}" rewinds the conditional scope

* drop the line completely.

* but is otherwise ignored when interpreting the line.

ep = buf->buf + pos;

if (ep[0] == '\\' && ep[1] == '}')

rr = 0;

/* Always check for the closing delimiter `\}'. */

while ((ep = strchr(ep, '\\')) != NULL) {

if (*(++ep) == '}') {

switch (ep[1]) {

*ep = '&';

case '}':

roff_ccond(r, ln, ep - buf->buf - 1);

if (ep[2] == '\0')

}

ep[0] = '\0';

if (*ep != '\0')

else if (rr)

ep[1] = '&';

else

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;

}

return rr ? ROFF_CONT : ROFF_IGN;

*offs = rr;

return irc;

}

static enum rofferr

roff_cond_text(ROFF_ARGS)

* Parse and process a request or macro line in conditional scope.

static int

roff_cond_sub(ROFF_ARGS)

{

char *ep;

struct roffnode *bl;

int rr;

int irc, rr;

enum roff_tok t;

rr = r->last->rule;

rr = 0; /* If arguments follow "\}", skip them. */

roffnode_cleanscope(r);

irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);

t = roff_parse(r, buf->buf, &pos, ln, ppos);

ep = buf->buf + pos;

/* For now, let high level macros abort .ce mode. */

while ((ep = strchr(ep, '\\')) != NULL) {

if (*(++ep) == '}') {

if (roffce_node != NULL &&

*ep = '&';

(t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||

roff_ccond(r, ln, ep - buf->buf - 1);

t == ROFF_TH || t == ROFF_TS)) {

}

r->man->last = roffce_node;

if (*ep != '\0')

r->man->next = ROFF_NEXT_SIBLING;

++ep;

roffce_lines = 0;

roffce_node = NULL;

}

return rr ? ROFF_CONT : ROFF_IGN;

* 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;

}

* Parse and process a text line in conditional scope.

static int

roff_cond_text(ROFF_ARGS)

{

int irc, rr;

rr = 1; /* If arguments follow "\}", preserve them. */

irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);

if (rr)

irc |= ROFF_CONT;

return irc;

}

/* --- handling of numeric and conditional expressions -------------------- */

Line 1965 out:

Line 2579 out:

static int

roff_evalcond(struct roff *r, int ln, char *v, int *pos)

{

char *cp, *name;

const char *start, *end;

size_t sz;

char *cp, *name;

int number, savepos, wanttrue;

size_t sz;

int deftype, len, number, savepos, istrue, wanttrue;

if ('!' == v[*pos]) {

wanttrue = 0;

Line 1982 roff_evalcond(struct roff *r, int ln, char *v, int *po

Line 2597 roff_evalcond(struct roff *r, int ln, char *v, int *po

case 'o':

(*pos)++;

return wanttrue;

case 'c':

case 'd':

case 'e':

case 't':

case 'v':

(*pos)++;

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 = name = v + ++*pos;

cp = v + *pos + 1;

sz = roff_getname(r, &cp, ln, *pos);

while (*cp == ' ')

*pos = cp - v;

cp++;

return (sz && roff_hasregn(r, name, sz)) == wanttrue;

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;

}

Line 2007 roff_evalcond(struct roff *r, int ln, char *v, int *po

Line 2672 roff_evalcond(struct roff *r, int ln, char *v, int *po

return 0;

}

static enum rofferr

static int

roff_line_ignore(ROFF_ARGS)

{

return ROFF_IGN;

}

static enum rofferr

static int

roff_insec(ROFF_ARGS)

{

mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,

mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);

ln, ppos, roff_name[tok]);

return ROFF_IGN;

}

static enum rofferr

static int

roff_unsupp(ROFF_ARGS)

{

mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,

mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);

ln, ppos, roff_name[tok]);

return ROFF_IGN;

}

static enum rofferr

static int

roff_cond(ROFF_ARGS)

{

int irc;

roffnode_push(r, tok, NULL, ln, ppos);

Line 2073 roff_cond(ROFF_ARGS)

Line 2737 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 (buf->buf[pos] == '\0') {

if (buf->buf[pos] == '\0' && tok != ROFF_while) {

r->last->endspan = 2;

goto out;

}

Line 2100 roff_cond(ROFF_ARGS)

Line 2765 roff_cond(ROFF_ARGS)

if (buf->buf[pos] == '\0')

mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,

mandoc_msg(MANDOCERR_COND_EMPTY,

ln, ppos, roff_name[tok]);

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;

Line 2135 roff_ds(ROFF_ARGS)

Line 2803 roff_ds(ROFF_ARGS)

return ROFF_IGN;

namesz = roff_getname(r, &string, ln, pos);

if (name[namesz] == '\\')

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 == '"')

Line 2145 roff_ds(ROFF_ARGS)

Line 2820 roff_ds(ROFF_ARGS)

/* The rest is the value. */

roff_setstrn(&r->strtab, name, namesz, string, strlen(string),

ROFF_as == tok);

roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);

return ROFF_IGN;

}

Line 2300 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2976 roff_evalnum(struct roff *r, int ln, const char *v,

case '/':

if (operand2 == 0) {

mandoc_msg(MANDOCERR_DIVZERO,

r->parse, ln, *pos, v);

ln, *pos, "%s", v);

*res = 0;

break;

}

Line 2309 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2985 roff_evalnum(struct roff *r, int ln, const char *v,

case '%':

if (operand2 == 0) {

mandoc_msg(MANDOCERR_DIVZERO,

r->parse, ln, *pos, v);

ln, *pos, "%s", v);

*res = 0;

break;

}

Line 2359 roff_evalnum(struct roff *r, int ln, const char *v,

Line 3035 roff_evalnum(struct roff *r, int ln, const char *v,

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.p = mandoc_strndup(name, len);

reg->key.sz = strlen(name);

reg->key.sz = len;

reg->val = 0;

reg->step = 0;

reg->next = r->regtab;

r->regtab = reg;

}

Line 2383 roff_setreg(struct roff *r, const char *name, int val,

Line 3068 roff_setreg(struct roff *r, const char *name, int val,

reg->val -= val;

else

reg->val = val;

if (step != INT_MIN)

reg->step = step;

}

Line 2397 roff_getregro(const struct roff *r, const char *name)

Line 3084 roff_getregro(const struct roff *r, const char *name)

switch (*name) {

case '$': /* Number of arguments of the last macro evaluated. */

return r->argc;

return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;

case 'A': /* ASCII approximation mode is always off. */

return 0;

case 'g': /* Groff compatibility mode is always on. */

Line 2416 roff_getregro(const struct roff *r, const char *name)

Line 3103 roff_getregro(const struct roff *r, const char *name)

}

int

roff_getreg(const struct roff *r, const char *name)

roff_getreg(struct roff *r, const char *name)

{

struct roffreg *reg;

return roff_getregn(r, name, strlen(name), '\0');

int val;

if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {

val = roff_getregro(r, name + 1);

if (-1 != val)

return val;

}

for (reg = r->regtab; reg; reg = reg->next)

if (0 == strcmp(name, reg->key.p))

return reg->val;

return 0;

}

static int

roff_getregn(const struct roff *r, const char *name, size_t len)

roff_getregn(struct roff *r, const char *name, size_t len, char sign)

{

struct roffreg *reg;

int val;

Line 2446 roff_getregn(const struct roff *r, const char *name, s

Line 3120 roff_getregn(const struct roff *r, const char *name, s

return val;

}

for (reg = r->regtab; reg; reg = reg->next)

for (reg = r->regtab; reg; reg = reg->next) {

if (len == reg->key.sz &&

0 == strncmp(name, reg->key.p, len))

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;

}

roff_setregn(r, name, len, 0, '\0', INT_MIN);

return 0;

}

Line 2487 roff_freereg(struct roffreg *reg)

Line 3174 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 = buf->buf + pos;

Line 2500 roff_nr(ROFF_ARGS)

Line 3187 roff_nr(ROFF_ARGS)

return ROFF_IGN;

keysz = roff_getname(r, &val, ln, pos);

if (key[keysz] == '\\')

if (key[keysz] == '\\' || key[keysz] == '\t')

return ROFF_IGN;

key[keysz] = '\0';

sign = *val;

if (sign == '+' || sign == '-')

val++;

if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))

len = 0;

roff_setreg(r, key, iv, sign);

if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)

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;

Line 2544 roff_rr(ROFF_ARGS)

Line 3238 roff_rr(ROFF_ARGS)

/* --- handler functions for roff requests -------------------------------- */

static enum rofferr

static int

roff_rm(ROFF_ARGS)

{

const char *name;

Line 2556 roff_rm(ROFF_ARGS)

Line 3250 roff_rm(ROFF_ARGS)

name = cp;

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;

}

static enum rofferr

static int

roff_it(ROFF_ARGS)

{

int iv;

Line 2570 roff_it(ROFF_ARGS)

Line 3265 roff_it(ROFF_ARGS)

/* Parse the number of lines. */

if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {

mandoc_msg(MANDOCERR_IT_NONUM, r->parse,

mandoc_msg(MANDOCERR_IT_NONUM,

ln, ppos, buf->buf + 1);

ln, ppos, "%s", buf->buf + 1);

return ROFF_IGN;

}

Line 2591 roff_it(ROFF_ARGS)

Line 3286 roff_it(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_Dd(ROFF_ARGS)

{

const char *const *cp;

int mask;

enum roff_tok t, te;

if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)

switch (tok) {

for (cp = __mdoc_reserved; *cp; cp++)

case ROFF_Dd:

roff_setstr(r, *cp, NULL, 0);

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;

}

static enum rofferr

static int

roff_TH(ROFF_ARGS)

{

const char *const *cp;

if ((r->options & MPARSE_QUICK) == 0)

for (cp = __man_reserved; *cp; cp++)

roff_setstr(r, *cp, NULL, 0);

if (r->format == 0)

r->format = MPARSE_MAN;

return ROFF_CONT;

}

static enum rofferr

roff_TE(ROFF_ARGS)

{

r->man->flags &= ~ROFF_NONOFILL;

if (NULL == r->tbl)

if (r->tbl == NULL) {

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");

ln, ppos, "TE");

return ROFF_IGN;

else if ( ! tbl_end(&r->tbl)) {

}

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

static int

roff_T_(ROFF_ARGS)

{

if (NULL == r->tbl)

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");

ln, ppos, "T&");

else

tbl_restart(ln, ppos, r->tbl);

Line 2653 roff_T_(ROFF_ARGS)

Line 3351 roff_T_(ROFF_ARGS)

* Handle in-line equation delimiters.

static enum rofferr

static int

roff_eqndelim(struct roff *r, struct buf *buf, int pos)

{

char *cp1, *cp2;

Line 2716 roff_eqndelim(struct roff *r, struct buf *buf, int pos

Line 3414 roff_eqndelim(struct roff *r, struct buf *buf, int pos

return ROFF_REPARSE;

}

static enum rofferr

static int

roff_EQ(ROFF_ARGS)

{

struct eqn_node *e;

struct roff_node *n;

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);

e = eqn_alloc(ppos, ln, r->parse);

if (r->last_eqn == NULL)

r->last_eqn = eqn_alloc();

else

eqn_reset(r->last_eqn);

r->eqn = r->last_eqn;

r->eqn->node = n;

if (r->last_eqn) {

r->last_eqn->next = e;

e->delim = r->last_eqn->delim;

e->odelim = r->last_eqn->odelim;

e->cdelim = r->last_eqn->cdelim;

} else

r->first_eqn = r->last_eqn = e;

r->eqn = r->last_eqn = e;

if (buf->buf[pos] != '\0')

mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,

mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,

".EQ %s", buf->buf + pos);

return ROFF_IGN;

}

static enum rofferr

static int

roff_EN(ROFF_ARGS)

{

if (r->eqn != NULL) {

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");

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;

}

static enum rofferr

static int

roff_TS(ROFF_ARGS)

{

struct tbl_node *tbl;

if (r->tbl != NULL) {

mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");

if (r->tbl) {

tbl_end(r->tbl, 0);

mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,

ln, ppos, "TS breaks TS");

tbl_end(&r->tbl);

}

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;

}

tbl = tbl_alloc(ppos, ln, r->parse);

static int

roff_noarg(ROFF_ARGS)

if (r->last_tbl)

{

r->last_tbl->next = tbl;

if (r->man->flags & (MAN_BLINE | MAN_ELINE))

else

man_breakscope(r->man, tok);

r->first_tbl = r->last_tbl = tbl;

if (tok == ROFF_brp)

tok = ROFF_br;

r->tbl = r->last_tbl = tbl;

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;

}

static enum rofferr

static int

roff_onearg(ROFF_ARGS)

{

struct roff_node *n;

char *cp;

int npos;

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);

if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {

r->man->last = roffce_node;

r->man->next = ROFF_NEXT_SIBLING;

}

roff_elem_alloc(r->man, ln, ppos, tok);

n = r->man->last;

Line 2787 roff_onearg(ROFF_ARGS)

Line 3519 roff_onearg(ROFF_ARGS)

while (*cp == ' ')

*cp++ = '\0';

if (*cp != '\0')

mandoc_vmsg(MANDOCERR_ARG_EXCESS,

mandoc_msg(MANDOCERR_ARG_EXCESS,

r->parse, ln, cp - buf->buf,

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 int

roff_manyarg(ROFF_ARGS)

{

struct roff_node *n;

char *sp, *ep;

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

static int

roff_br(ROFF_ARGS)

roff_als(ROFF_ARGS)

{

roff_elem_alloc(r->man, ln, ppos, ROFF_br);

char *oldn, *newn, *end, *value;

if (buf->buf[pos] != '\0')

size_t oldsz, newsz, valsz;

mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,

"%s %s", roff_name[tok], buf->buf + pos);

newn = oldn = buf->buf + pos;

r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;

if (*newn == '\0')

r->man->next = ROFF_NEXT_SIBLING;

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

* The .break request only makes sense inside conditionals,

* and that case is already handled in roff_cond_sub().

static int

roff_break(ROFF_ARGS)

{

mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");

return ROFF_IGN;

}

static int

roff_cc(ROFF_ARGS)

{

const char *p;

Line 2819 roff_cc(ROFF_ARGS)

Line 3621 roff_cc(ROFF_ARGS)

p = buf->buf + pos;

if (*p == '\0' || (r->control = *p++) == '.')

r->control = 0;

r->control = '\0';

if (*p != '\0')

mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,

mandoc_msg(MANDOCERR_ARG_EXCESS,

ln, p - buf->buf, "cc ... %s", p);

return ROFF_IGN;

}

static enum rofferr

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++;

* If the replacement string contains a font escape sequence,

* we have to restore the font at the end.

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_FONTCR:

case ESCAPE_FONTCB:

case ESCAPE_FONTCI:

case ESCAPE_FONTPREV:

font++;

break;

default:

break;

}

if (font > 1)

mandoc_msg(MANDOCERR_CHAR_FONT,

ln, (int)(vp - buf->buf), "%s", vp);

* 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 int

roff_ec(ROFF_ARGS)

{

const char *p;

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;

}

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;

}

static int

roff_nop(ROFF_ARGS)

{

while (buf->buf[pos] == ' ')

pos++;

*offs = pos;

return ROFF_RERUN;

}

static int

roff_tr(ROFF_ARGS)

{

const char *p, *first, *second;

Line 2838 roff_tr(ROFF_ARGS)

Line 3748 roff_tr(ROFF_ARGS)

p = buf->buf + pos;

if (*p == '\0') {

mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");

mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");

return ROFF_IGN;

}

Line 2849 roff_tr(ROFF_ARGS)

Line 3759 roff_tr(ROFF_ARGS)

if (*first == '\\') {

esc = mandoc_escape(&p, NULL, NULL);

if (esc == ESCAPE_ERROR) {

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

mandoc_msg(MANDOCERR_ESC_BAD, ln,

ln, (int)(p - buf->buf), first);

(int)(p - buf->buf), "%s", first);

return ROFF_IGN;

}

fsz = (size_t)(p - first);

Line 2860 roff_tr(ROFF_ARGS)

Line 3770 roff_tr(ROFF_ARGS)

if (*second == '\\') {

esc = mandoc_escape(&p, NULL, NULL);

if (esc == ESCAPE_ERROR) {

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

mandoc_msg(MANDOCERR_ESC_BAD, ln,

ln, (int)(p - buf->buf), second);

(int)(p - buf->buf), "%s", second);

return ROFF_IGN;

}

ssz = (size_t)(p - second);

} else if (*second == '\0') {

mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,

mandoc_msg(MANDOCERR_TR_ODD, ln,

ln, first - buf->buf, "tr %s", first);

(int)(first - buf->buf), "tr %s", first);

second = " ";

p--;

}

Line 2890 roff_tr(ROFF_ARGS)

Line 3800 roff_tr(ROFF_ARGS)

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, *cp;

name = buf->buf + pos;

mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);

mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);

* Handle `so'. Be EXTREMELY careful, as we shouldn't be

Line 2906 roff_so(ROFF_ARGS)

Line 3915 roff_so(ROFF_ARGS)

if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {

mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,

mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);

".so %s", name);

buf->sz = mandoc_asprintf(&cp,

".sp\nSee the file %s.\n.sp", name) + 1;

free(buf->buf);

Line 2922 roff_so(ROFF_ARGS)

Line 3930 roff_so(ROFF_ARGS)

/* --- user defined strings and macros ------------------------------------ */

static enum rofferr

static int

roff_userdef(ROFF_ARGS)

{

const char *arg[9], *ap;

struct mctx *ctx;

char *cp, *n1, *n2;

char *arg, *ap, *dst, *src;

int expand_count, i, ib, ie;

size_t sz;

size_t asz, rsz;

/* If the macro is empty, ignore it altogether. */

* Collect pointers to macro argument strings

* and NUL-terminate them.

r->argc = 0;

if (*r->current_string == '\0')

cp = buf->buf + pos;

return ROFF_IGN;

for (i = 0; i < 9; i++) {

if (*cp == '\0')

/* Initialize a new macro stack context. */

arg[i] = "";

else {

if (++r->mstackpos == r->mstacksz) {

arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);

r->mstack = mandoc_recallocarray(r->mstack,

r->argc = i + 1;

r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));

}

r->mstacksz += 8;

}

ctx = r->mstack + r->mstackpos;

ctx->argc = 0;

* Expand macro arguments.

* Collect pointers to macro argument strings,

* NUL-terminating them and escaping quotes.

buf->sz = strlen(r->current_string) + 1;

src = buf->buf + pos;

n1 = n2 = cp = mandoc_malloc(buf->sz);

while (*src != '\0') {

memcpy(n1, r->current_string, buf->sz);

if (ctx->argc == ctx->argsz) {

expand_count = 0;

ctx->argsz += 8;

while (*cp != '\0') {

ctx->argv = mandoc_reallocarray(ctx->argv,

ctx->argsz, sizeof(*ctx->argv));

/* Scan ahead for the next argument invocation. */

if (*cp++ != '\\')

continue;

if (*cp++ != '$')

continue;

if (*cp == '*') { /* \\$* inserts all arguments */

ib = 0;

ie = r->argc - 1;

} else { /* \\$1 .. \\$9 insert one argument */

ib = ie = *cp - '1';

if (ib < 0 || ib > 8)

continue;

}

cp -= 2;

arg = roff_getarg(r, &src, ln, &pos);

sz = 1; /* For the terminating NUL. */

for (ap = arg; *ap != '\0'; ap++)

* Prevent infinite recursion.

sz += *ap == '"' ? 4 : 1;

ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);

for (ap = arg; *ap != '\0'; ap++) {

if (cp >= n2)

if (*ap == '"') {

expand_count = 1;

memcpy(dst, "\\(dq", 4);

else if (++expand_count > EXPAND_LIMIT) {

dst += 4;

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

} else

ln, (int)(cp - n1), NULL);

*dst++ = *ap;

free(buf->buf);

buf->buf = n1;

return ROFF_IGN;

}

*dst = '\0';

free(arg);

}

/* Replace the macro invocation by the macro definition. */

* Determine the size of the expanded argument,

* taking escaping of quotes into account.

asz = ie > ib ? ie - ib : 0; /* for blanks */

free(buf->buf);

for (i = ib; i <= ie; i++) {

buf->buf = mandoc_strdup(r->current_string);

for (ap = arg[i]; *ap != '\0'; ap++) {

buf->sz = strlen(buf->buf) + 1;

asz++;

*offs = 0;

if (*ap == '"')

asz += 3;

}

if (asz != 3) {

return buf->buf[buf->sz - 2] == '\n' ?

* Determine the size of the rest of the

ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;

* unexpanded macro, including the NUL.

}

rsz = buf->sz - (cp - n1) - 3;

* 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,

* When shrinking, move before

buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;

* releasing the storage.

if (asz < 3)

memmove(cp + asz, cp + 3, rsz);

* Resize the storage for the macro

* and readjust the parse pointer.

buf->sz += asz - 3;

n2 = mandoc_realloc(n1, buf->sz);

cp = n2 + (cp - n1);

n1 = n2;

* When growing, make room

* for the expanded argument.

if (asz > 3)

memmove(cp + asz, cp + 3, rsz);

}

/* Copy the expanded argument, escaping quotes. */

n2 = cp;

for (i = ib; i <= ie; i++) {

for (ap = arg[i]; *ap != '\0'; ap++) {

if (*ap == '"') {

memcpy(n2, "\\(dq", 4);

n2 += 4;

} else

*n2++ = *ap;

}

if (i < ie)

*n2++ = ' ';

}

* Replace the macro invocation

* by the expanded macro.

free(buf->buf);

buf->buf = n1;

buf->buf = nbuf;

*offs = 0;

return ROFF_CONT;

return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?

ROFF_REPARSE : ROFF_APPEND;

}

* 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)

{

Line 3071 roff_getname(struct roff *r, char **cpp, int ln, int p

Line 4019 roff_getname(struct roff *r, char **cpp, int ln, int p

size_t namesz;

name = *cpp;

if ('\0' == *name)

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;

if (*cp == '\0')

break;

if (*cp == ' ' || *cp == '\t') {

cp++;

break;

}

if ('\\' != *cp)

if (*cp != '\\')

continue;

namesz = cp - name;

if (cp[1] == '{' || cp[1] == '}')

if ('{' == cp[1] || '}' == cp[1])

break;

cp++;

if (*++cp == '\\')

if ('\\' == *cp)

continue;

mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,

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;

Line 3113 static void

Line 4064 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

Line 3191 roff_setstrn(struct roffkv **r, const char *name, size

Line 4145 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;

int found, i;

enum roff_tok tok;

for (n = r->strtab; n; n = n->next)

found = 0;

if (0 == strncmp(name, n->key.p, len) &&

for (n = r->strtab; n != NULL; n = n->next) {

'\0' == n->key.p[(int)len])

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 {

for (i = 0; i < PREDEFS_MAX; i++)

found = 1;

if (0 == strncmp(name, predefs[i].name, len) &&

break;

'\0' == predefs[i].name[(int)len])

}

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;

}

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;

}

/* 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;

}

Line 3224 roff_freestr(struct roffkv *r)

Line 4253 roff_freestr(struct roffkv *r)

/* --- accessors and utility functions ------------------------------------ */

const struct tbl_span *

roff_span(const struct roff *r)

{

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.

Line 3319 roff_strdup(const struct roff *r, const char *p)

Line 4334 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);

Line 3355 roff_getcontrol(const struct roff *r, const char *cp,

Line 4370 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)

else if (r->control != '\0')

return 0;

else if ('\\' == cp[pos] && '.' == cp[pos + 1])

pos += 2;

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