mandoc/roff.c - diff

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Diff for /mandoc/roff.c between version 1.259 and 1.294

version 1.259, 2015/01/30 00:19:46

version 1.294, 2017/04/24 23:06:18

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 28

#include "mandoc.h"

#include "mandoc_aux.h"

#include "roff.h"

#include "libmandoc.h"

#include "roff_int.h"

#include "libroff.h"

/* Maximum number of nested if-else conditionals. */

#define RSTACK_MAX 128

/* Maximum number of string expansions per line, to break infinite loops. */

#define EXPAND_LIMIT 1000

enum rofft {

/* --- data types --------------------------------------------------------- */

ROFF_ab,

ROFF_ad,

ROFF_af,

ROFF_aln,

ROFF_als,

ROFF_am,

ROFF_am1,

ROFF_ami,

ROFF_ami1,

ROFF_as,

ROFF_as1,

ROFF_asciify,

ROFF_backtrace,

ROFF_bd,

ROFF_bleedat,

ROFF_blm,

ROFF_box,

ROFF_boxa,

ROFF_bp,

ROFF_BP,

/* MAN_br, MDOC_br */

ROFF_break,

ROFF_breakchar,

ROFF_brnl,

ROFF_brp,

ROFF_brpnl,

ROFF_c2,

ROFF_cc,

ROFF_ce,

ROFF_cf,

ROFF_cflags,

ROFF_ch,

ROFF_char,

ROFF_chop,

ROFF_class,

ROFF_close,

ROFF_CL,

ROFF_color,

ROFF_composite,

ROFF_continue,

ROFF_cp,

ROFF_cropat,

ROFF_cs,

ROFF_cu,

ROFF_da,

ROFF_dch,

ROFF_Dd,

ROFF_de,

ROFF_de1,

ROFF_defcolor,

ROFF_dei,

ROFF_dei1,

ROFF_device,

ROFF_devicem,

ROFF_di,

ROFF_do,

ROFF_ds,

ROFF_ds1,

ROFF_dwh,

ROFF_dt,

ROFF_ec,

ROFF_ecr,

ROFF_ecs,

ROFF_el,

ROFF_em,

ROFF_EN,

ROFF_eo,

ROFF_EP,

ROFF_EQ,

ROFF_errprint,

ROFF_ev,

ROFF_evc,

ROFF_ex,

ROFF_fallback,

ROFF_fam,

ROFF_fc,

ROFF_fchar,

ROFF_fcolor,

ROFF_fdeferlig,

ROFF_feature,

/* MAN_fi; ignored in mdoc(7) */

ROFF_fkern,

ROFF_fl,

ROFF_flig,

ROFF_fp,

ROFF_fps,

ROFF_fschar,

ROFF_fspacewidth,

ROFF_fspecial,

/* MAN_ft; ignored in mdoc(7) */

ROFF_ftr,

ROFF_fzoom,

ROFF_gcolor,

ROFF_hc,

ROFF_hcode,

ROFF_hidechar,

ROFF_hla,

ROFF_hlm,

ROFF_hpf,

ROFF_hpfa,

ROFF_hpfcode,

ROFF_hw,

ROFF_hy,

ROFF_hylang,

ROFF_hylen,

ROFF_hym,

ROFF_hypp,

ROFF_hys,

ROFF_ie,

ROFF_if,

ROFF_ig,

/* MAN_in; ignored in mdoc(7) */

ROFF_index,

ROFF_it,

ROFF_itc,

ROFF_IX,

ROFF_kern,

ROFF_kernafter,

ROFF_kernbefore,

ROFF_kernpair,

ROFF_lc,

ROFF_lc_ctype,

ROFF_lds,

ROFF_length,

ROFF_letadj,

ROFF_lf,

ROFF_lg,

ROFF_lhang,

ROFF_linetabs,

/* MAN_ll, MDOC_ll */

ROFF_lnr,

ROFF_lnrf,

ROFF_lpfx,

ROFF_ls,

ROFF_lsm,

ROFF_lt,

ROFF_mc,

ROFF_mediasize,

ROFF_minss,

ROFF_mk,

ROFF_mso,

ROFF_na,

ROFF_ne,

/* MAN_nf; ignored in mdoc(7) */

ROFF_nh,

ROFF_nhychar,

ROFF_nm,

ROFF_nn,

ROFF_nop,

ROFF_nr,

ROFF_nrf,

ROFF_nroff,

ROFF_ns,

ROFF_nx,

ROFF_open,

ROFF_opena,

ROFF_os,

ROFF_output,

ROFF_padj,

ROFF_papersize,

ROFF_pc,

ROFF_pev,

ROFF_pi,

ROFF_PI,

ROFF_pl,

ROFF_pm,

ROFF_pn,

ROFF_pnr,

ROFF_po,

ROFF_ps,

ROFF_psbb,

ROFF_pshape,

ROFF_pso,

ROFF_ptr,

ROFF_pvs,

ROFF_rchar,

ROFF_rd,

ROFF_recursionlimit,

ROFF_return,

ROFF_rfschar,

ROFF_rhang,

ROFF_rj,

ROFF_rm,

ROFF_rn,

ROFF_rnn,

ROFF_rr,

ROFF_rs,

ROFF_rt,

ROFF_schar,

ROFF_sentchar,

ROFF_shc,

ROFF_shift,

ROFF_sizes,

ROFF_so,

/* MAN_sp, MDOC_sp */

ROFF_spacewidth,

ROFF_special,

ROFF_spreadwarn,

ROFF_ss,

ROFF_sty,

ROFF_substring,

ROFF_sv,

ROFF_sy,

ROFF_T_,

ROFF_ta,

ROFF_tc,

ROFF_TE,

ROFF_TH,

ROFF_ti,

ROFF_tkf,

ROFF_tl,

ROFF_tm,

ROFF_tm1,

ROFF_tmc,

ROFF_tr,

ROFF_track,

ROFF_transchar,

ROFF_trf,

ROFF_trimat,

ROFF_trin,

ROFF_trnt,

ROFF_troff,

ROFF_TS,

ROFF_uf,

ROFF_ul,

ROFF_unformat,

ROFF_unwatch,

ROFF_unwatchn,

ROFF_vpt,

ROFF_vs,

ROFF_warn,

ROFF_warnscale,

ROFF_watch,

ROFF_watchlength,

ROFF_watchn,

ROFF_wh,

ROFF_while,

ROFF_write,

ROFF_writec,

ROFF_writem,

ROFF_xflag,

ROFF_cblock,

ROFF_USERDEF,

ROFF_MAX

};

* An incredibly-simple string buffer.

Line 312 struct roffreg {

Line 66 struct roffreg {

struct roff {

struct mparse *parse; /* parse point */

const struct mchars *mchars; /* character table */

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

int *rstack; /* stack of inverted `ie' values */

struct roffreg *regtab; /* number registers */

Line 331 struct roff {

Line 84 struct roff {

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 */

};

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 */

Line 346 struct roffnode {

Line 100 struct roffnode {

};

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

enum rofft tok, /* tok of macro */ \

enum roff_tok tok, /* tok of macro */ \

struct buf *buf, /* input buffer */ \

int ln, /* parse line */ \

int ppos, /* original pos in buffer */ \

Line 373 struct predef {

Line 127 struct predef {

#define PREDEF(__name, __str) \

{ (__name), (__str) },

static enum rofft roffhash_find(const char *, size_t);

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

static enum roff_tok 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,

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);

Line 391 static enum rofferr roff_cond_text(ROFF_ARGS);

Line 147 static enum rofferr roff_cond_text(ROFF_ARGS);

static enum rofferr roff_cond_sub(ROFF_ARGS);

static enum rofferr roff_ds(ROFF_ARGS);

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

static int roff_evalcond(struct roff *r, int,

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

const 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 *);

const char *, int *, int *, int);

static int roff_evalstrcond(const char *, int *);

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 *,

const char *, size_t);

static int roff_getregro(const char *name);

static int roff_getregro(const struct roff *,

const char *name);

static const char *roff_getstrn(const struct roff *,

const char *, size_t);

static int roff_hasregn(const struct roff *,

const char *, size_t);

static enum rofferr roff_insec(ROFF_ARGS);

static enum rofferr roff_it(ROFF_ARGS);

static enum rofferr 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 enum rofft roff_parse(struct roff *, char *, int *,

static enum roff_tok roff_parse(struct roff *, char *, int *,

int, int);

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

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

Line 435 static enum rofferr roff_T_(ROFF_ARGS);

Line 195 static enum rofferr roff_T_(ROFF_ARGS);

static enum rofferr roff_unsupp(ROFF_ARGS);

static enum rofferr roff_userdef(ROFF_ARGS);

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

/* See roffhash_find() */

#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(). */

const char *__roff_name[MAN_MAX + 1] = {

"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",

"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", "mc",

"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", "po", "ps",

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

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

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

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

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

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

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

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

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

"TH", "ti", "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,

"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", "br", "sp",

"%U", "Ta", "ll", NULL,

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

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

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

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

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

"br", "sp", "nf", "fi",

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

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

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

"UE", "ll", NULL

};

const char *const *roff_name = __roff_name;

static struct roffmac *hash[HASHWIDTH];

static struct roffmac roffs[ROFF_MAX] = {

static struct roffmac roffs[TOKEN_NONE] = {

{ "ab", roff_unsupp, NULL, NULL, 0, NULL },

{ "ad", roff_line_ignore, NULL, NULL, 0, NULL },

{ "af", roff_line_ignore, NULL, NULL, 0, NULL },

Line 728 static int roffit_lines; /* number of lines to delay

Line 598 static int roffit_lines; /* number of lines to delay

static char *roffit_macro; /* nil-terminated macro line */

/* --- request table ------------------------------------------------------ */

static void

roffhash_init(void)

{

Line 750 roffhash_init(void)

Line 622 roffhash_init(void)

}

* Look up a roff token by its name. Returns ROFF_MAX if no macro by

* Look up a roff token by its name. Returns TOKEN_NONE if no macro by

* the nil-terminated string name could be found.

static enum rofft

static enum roff_tok

roffhash_find(const char *p, size_t s)

{

int buc;

Line 767 roffhash_find(const char *p, size_t s)

Line 639 roffhash_find(const char *p, size_t s)

if (p[0] < ASCII_LO || p[0] > ASCII_HI)

return(ROFF_MAX);

return TOKEN_NONE;

buc = ROFF_HASH(p);

if (NULL == (n = hash[buc]))

return(ROFF_MAX);

return TOKEN_NONE;

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

if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])

return((enum rofft)(n - roffs));

return (enum roff_tok)(n - roffs);

return(ROFF_MAX);

return TOKEN_NONE;

}

/* --- stack of request blocks -------------------------------------------- */

* Pop the current node off of the stack of roff instructions currently

* pending.

Line 803 roffnode_pop(struct roff *r)

Line 677 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;

Line 820 roffnode_push(struct roff *r, enum rofft tok, const ch

Line 694 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)

{

Line 879 roff_free(struct roff *r)

Line 755 roff_free(struct roff *r)

}

struct roff *

roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)

roff_alloc(struct mparse *parse, int options)

{

struct roff *r;

r = mandoc_calloc(1, sizeof(struct roff));

r->parse = parse;

r->mchars = mchars;

r->options = options;

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

r->rstackpos = -1;

roffhash_init();

return(r);

return r;

}

/* --- syntax tree state data management ---------------------------------- */

static void

roff_man_free1(struct roff_man *man)

{

if (man->first != NULL)

roff_node_delete(man, man->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);

}

static void

roff_man_alloc1(struct roff_man *man)

{

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;

}

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, struct mparse *parse,

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->quick = quick;

roff_man_alloc1(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 & 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;

}

void

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

{

struct roff_node *n;

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

n->eqn = eqn;

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

n->flags |= NODE_LINE;

roff_node_append(man, n);

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)

{

/* 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->first == n)

man->first = NULL;

}

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);

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);

}

void

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

{

char *cp;

size_t sz;

if (n->type != ROFFT_TEXT) {

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.

Line 949 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1174 roff_res(struct roff *r, struct buf *buf, int ln, int

res = NULL;

break;

case 'B':

/* FALLTHROUGH */

case 'w':

term = cp[1];

/* FALLTHROUGH */

Line 960 roff_res(struct roff *r, struct buf *buf, int ln, int

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

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

if (esc == ESCAPE_ERROR ||

(esc == ESCAPE_SPECIAL &&

mchars_spec2cp(r->mchars, stnam, inaml) < 0))

mchars_spec2cp(stnam, inaml) < 0))

mandoc_vmsg(MANDOCERR_ESC_BAD,

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

"%.*s", (int)(cp - stesc), stesc);

Line 970 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1194 roff_res(struct roff *r, struct buf *buf, int ln, int

if (EXPAND_LIMIT < ++expand_count) {

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

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

return(ROFF_IGN);

return ROFF_IGN;

}

Line 1024 roff_res(struct roff *r, struct buf *buf, int ln, int

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

}

switch (mandoc_escape(&cp, NULL, NULL)) {

case ESCAPE_SPECIAL:

/* FALLTHROUGH */

case ESCAPE_UNICODE:

/* FALLTHROUGH */

case ESCAPE_NUMBERED:

/* FALLTHROUGH */

case ESCAPE_OVERSTRIKE:

naml++;

break;

Line 1050 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1271 roff_res(struct roff *r, struct buf *buf, int ln, int

case 'B':

npos = 0;

ubuf[0] = arg_complete &&

roff_evalnum(r, ln, stnam, &npos, NULL, 0) &&

roff_evalnum(r, ln, stnam, &npos,

NULL, ROFFNUM_SCALE) &&

stnam + npos + 1 == cp ? '1' : '0';

ubuf[1] = '\0';

break;

Line 1076 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1298 roff_res(struct roff *r, struct buf *buf, int ln, int

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

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

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

return(ROFF_IGN);

return ROFF_IGN;

}

/* Replace the escape sequence by the string. */

Line 1092 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1314 roff_res(struct roff *r, struct buf *buf, int ln, int

free(buf->buf);

buf->buf = nbuf;

}

return(ROFF_CONT);

return ROFF_CONT;

}

* Process text streams:

* Process text streams.

* Convert all breakable hyphens into ASCII_HYPH.

* Decrement and spring input line trap.

static enum rofferr

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

Line 1109 roff_parsetext(struct buf *buf, int pos, int *offs)

Line 1329 roff_parsetext(struct buf *buf, int pos, int *offs)

int isz;

enum mandoc_esc esc;

/* Spring the input line trap. */

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;

/* Convert all breakable hyphens into ASCII_HYPH. */

start = p = buf->buf + pos;

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

Line 1124 roff_parsetext(struct buf *buf, int pos, int *offs)

Line 1360 roff_parsetext(struct buf *buf, int pos, int *offs)

esc = mandoc_escape((const char **)&p, NULL, NULL);

if (esc == ESCAPE_ERROR)

break;

while (*p == '-')

p++;

continue;

} else if (p == start) {

p++;

Line 1135 roff_parsetext(struct buf *buf, int pos, int *offs)

Line 1373 roff_parsetext(struct buf *buf, int pos, int *offs)

*p = ASCII_HYPH;

p++;

}

return ROFF_CONT;

/* Spring the input line trap. */

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;

return(ROFF_CONT);

}

enum rofferr

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

{

enum rofft t;

enum roff_tok t;

enum rofferr e;

int pos; /* parse point */

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

Line 1170 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1395 roff_parseln(struct roff *r, int ln, struct buf *buf,

(r->eqn == NULL || r->eqn_inline)) {

e = roff_eqndelim(r, buf, pos);

if (e == ROFF_REPARSE)

return(e);

return e;

assert(e == ROFF_CONT);

}

Line 1178 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1403 roff_parseln(struct roff *r, int ln, struct buf *buf,

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

if (e == ROFF_IGN)

return(e);

return e;

assert(e == ROFF_CONT);

ctl = roff_getcontrol(r, buf->buf, &pos);

Line 1193 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1418 roff_parseln(struct roff *r, int ln, struct buf *buf,

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

t = r->last->tok;

assert(roffs[t].text);

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

assert(e == ROFF_IGN || e == ROFF_CONT);

if (e == ROFF_IGN)

if (e != ROFF_CONT)

return e;

return(e);

assert(e == ROFF_CONT);

}

if (r->eqn != NULL)

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

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

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

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

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

if ( ! ctl)

return(roff_parsetext(buf, pos, offs));

return roff_parsetext(buf, pos, offs);

/* Skip empty request lines. */

if (buf->buf[pos] == '"') {

mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,

ln, pos, NULL);

return(ROFF_IGN);

return ROFF_IGN;

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

return(ROFF_IGN);

return ROFF_IGN;

* If a scope is open, go to the child handler for that macro,

Line 1223 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1447 roff_parseln(struct roff *r, int ln, struct buf *buf,

if (r->last) {

t = r->last->tok;

assert(roffs[t].sub);

return (*roffs[t].sub)(r, t, buf, 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. */

Line 1234 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1457 roff_parseln(struct roff *r, int ln, struct buf *buf,

/* Tables ignore most macros. */

if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {

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

mandoc_msg(MANDOCERR_TBLMACRO, r->parse,

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

if (t == ROFF_TS)

return(ROFF_IGN);

return ROFF_IGN;

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

pos++;

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

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

pos++;

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

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

}

Line 1251 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1474 roff_parseln(struct roff *r, int ln, struct buf *buf,

* Let the standard macro set parsers handle it.

if (t == ROFF_MAX)

if (t == TOKEN_NONE)

return(ROFF_CONT);

return ROFF_CONT;

/* Execute a roff request or a user defined macro. */

assert(roffs[t].proc);

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

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

}

void

Line 1286 roff_endparse(struct roff *r)

Line 1508 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;

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);

Line 1305 roff_parse(struct roff *r, char *buf, int *pos, int ln

Line 1527 roff_parse(struct roff *r, char *buf, int *pos, int ln

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

? ROFF_USERDEF : roffhash_find(mac, maclen);

if (ROFF_MAX != t)

if (t != TOKEN_NONE)

*pos = cp - buf;

return(t);

return t;

}

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

static enum rofferr

roff_cblock(ROFF_ARGS)

{

Line 1323 roff_cblock(ROFF_ARGS)

Line 1547 roff_cblock(ROFF_ARGS)

if (r->last == NULL) {

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "..");

return(ROFF_IGN);

return ROFF_IGN;

}

switch (r->last->tok) {

case ROFF_am:

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

/* FALLTHROUGH */

case ROFF_ami:

/* 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_BLK_NOTOPEN, r->parse,

ln, ppos, "..");

return(ROFF_IGN);

return ROFF_IGN;

}

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

Line 1351 roff_cblock(ROFF_ARGS)

Line 1571 roff_cblock(ROFF_ARGS)

roffnode_pop(r);

roffnode_cleanscope(r);

return(ROFF_IGN);

return ROFF_IGN;

}

Line 1378 roff_ccond(struct roff *r, int ln, int ppos)

Line 1598 roff_ccond(struct roff *r, int ln, int ppos)

switch (r->last->tok) {

case ROFF_el:

/* FALLTHROUGH */

case ROFF_ie:

/* FALLTHROUGH */

case ROFF_if:

break;

default:

Line 1446 roff_block(ROFF_ARGS)

Line 1664 roff_block(ROFF_ARGS)

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

mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,

ln, ppos, roffs[tok].name);

return(ROFF_IGN);

return ROFF_IGN;

}

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

Line 1461 roff_block(ROFF_ARGS)

Line 1679 roff_block(ROFF_ARGS)

roff_setstrn(&r->strtab, name, namesz, "", 0, 0);

if (*cp == '\0')

return(ROFF_IGN);

return ROFF_IGN;

/* Get the custom end marker. */

Line 1488 roff_block(ROFF_ARGS)

Line 1706 roff_block(ROFF_ARGS)

mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,

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

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

roff_block_sub(ROFF_ARGS)

{

enum rofft t;

enum roff_tok t;

int i, j;

Line 1523 roff_block_sub(ROFF_ARGS)

Line 1741 roff_block_sub(ROFF_ARGS)

pos = i;

if (roff_parse(r, buf->buf, &pos, ln, ppos) !=

ROFF_MAX)

TOKEN_NONE)

return(ROFF_RERUN);

return ROFF_RERUN;

return(ROFF_IGN);

return ROFF_IGN;

}

Line 1539 roff_block_sub(ROFF_ARGS)

Line 1757 roff_block_sub(ROFF_ARGS)

if (t != ROFF_cblock) {

if (tok != ROFF_ig)

roff_setstr(r, r->last->name, buf->buf + ppos, 2);

return(ROFF_IGN);

return ROFF_IGN;

}

assert(roffs[t].proc);

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

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

}

static enum rofferr

Line 1553 roff_block_text(ROFF_ARGS)

Line 1770 roff_block_text(ROFF_ARGS)

if (tok != ROFF_ig)

roff_setstr(r, r->last->name, buf->buf + pos, 2);

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

roff_cond_sub(ROFF_ARGS)

{

enum rofft t;

enum roff_tok t;

char *ep;

int rr;

Line 1572 roff_cond_sub(ROFF_ARGS)

Line 1789 roff_cond_sub(ROFF_ARGS)

* required or when the conditional evaluated to true.

if ((t != ROFF_MAX) &&

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

(rr || roffs[t].flags & ROFFMAC_STRUCT)) {

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

assert(roffs[t].proc);

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

}

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

Line 1597 roff_cond_sub(ROFF_ARGS)

Line 1811 roff_cond_sub(ROFF_ARGS)

if (*ep != '\0')

++ep;

}

return(rr ? ROFF_CONT : ROFF_IGN);

return rr ? ROFF_CONT : ROFF_IGN;

}

static enum rofferr

Line 1618 roff_cond_text(ROFF_ARGS)

Line 1832 roff_cond_text(ROFF_ARGS)

if (*ep != '\0')

++ep;

}

return(rr ? ROFF_CONT : ROFF_IGN);

return rr ? ROFF_CONT : ROFF_IGN;

}

/* --- 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

Line 1628 roff_cond_text(ROFF_ARGS)

Line 1844 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)

Line 1652 roff_getnum(const char *v, int *pos, int *res)

Line 1872 roff_getnum(const char *v, int *pos, int *res)

switch (v[p]) {

case 'f':

*res *= 65536;

scaled = *res * 65536;

break;

case 'i':

*res *= 240;

scaled = *res * 240;

break;

case 'c':

*res *= 240;

scaled = *res * 240 / 2.54;

*res /= 2.54;

break;

case 'v':

/* FALLTROUGH */

case 'P':

*res *= 40;

scaled = *res * 40;

break;

case 'm':

/* FALLTROUGH */

case 'n':

*res *= 24;

scaled = *res * 24;

break;

case 'p':

*res *= 10;

scaled = *res * 10 / 3;

*res /= 3;

break;

case 'u':

scaled = *res;

break;

case 'M':

*res *= 6;

scaled = *res * 6 / 25;

*res /= 25;

break;

default:

scaled = *res;

p--;

break;

}

if (flags & ROFFNUM_SCALE)

*res = scaled;

*pos = p + 1;

return(1);

return 1;

}

Line 1730 out:

Line 1949 out:

else if (*s3 != '\0')

s3++;

*pos = s3 - v;

return(match);

return match;

}

Line 1738 out:

Line 1957 out:

* or string condition.

static int

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

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

{

char *cp, *name;

size_t sz;

int number, savepos, wanttrue;

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

Line 1750 roff_evalcond(struct roff *r, int ln, const char *v, i

Line 1971 roff_evalcond(struct roff *r, int ln, const char *v, i

switch (v[*pos]) {

case '\0':

return(0);

return 0;

case 'n':

/* FALLTHROUGH */

case 'o':

(*pos)++;

return(wanttrue);

return wanttrue;

case 'c':

/* FALLTHROUGH */

case 'd':

/* FALLTHROUGH */

case 'e':

/* FALLTHROUGH */

case 'r':

/* FALLTHROUGH */

case 't':

/* FALLTHROUGH */

case 'v':

(*pos)++;

return(!wanttrue);

return !wanttrue;

case 'r':

cp = name = v + ++*pos;

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

*pos = cp - v;

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

default:

break;

}

savepos = *pos;

if (roff_evalnum(r, ln, v, pos, &number, 0))

if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))

return((number > 0) == wanttrue);

return (number > 0) == wanttrue;

else if (*pos == savepos)

return(roff_evalstrcond(v, pos) == wanttrue);

return roff_evalstrcond(v, pos) == wanttrue;

else

return (0);

return 0;

}

static enum rofferr

roff_line_ignore(ROFF_ARGS)

{

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 1795 roff_insec(ROFF_ARGS)

Line 2014 roff_insec(ROFF_ARGS)

mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,

ln, ppos, roffs[tok].name);

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 1804 roff_unsupp(ROFF_ARGS)

Line 2023 roff_unsupp(ROFF_ARGS)

mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,

ln, ppos, roffs[tok].name);

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 1863 roff_cond(ROFF_ARGS)

Line 2082 roff_cond(ROFF_ARGS)

if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {

r->last->endspan = -1;

pos += 2;

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

pos++;

goto out;

}

Line 1880 roff_cond(ROFF_ARGS)

Line 2101 roff_cond(ROFF_ARGS)

out:

*offs = pos;

return(ROFF_RERUN);

return ROFF_RERUN;

}

static enum rofferr

Line 1905 roff_ds(ROFF_ARGS)

Line 2126 roff_ds(ROFF_ARGS)

name = string = buf->buf + pos;

if (*name == '\0')

return(ROFF_IGN);

return ROFF_IGN;

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

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

return(ROFF_IGN);

return ROFF_IGN;

/* Read past the initial double-quote, if any. */

if (*string == '"')

Line 1918 roff_ds(ROFF_ARGS)

Line 2139 roff_ds(ROFF_ARGS)

/* The rest is the value. */

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

ROFF_as == tok);

return(ROFF_IGN);

return ROFF_IGN;

}

Line 1934 roff_getop(const char *v, int *pos, char *res)

Line 2155 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 '<':

Line 1984 roff_getop(const char *v, int *pos, char *res)

Line 2199 roff_getop(const char *v, int *pos, char *res)

(*pos)++;

break;

default:

return(0);

return 0;

}

(*pos)++;

return(*res);

return *res;

}

Line 1997 roff_getop(const char *v, int *pos, char *res)

Line 2212 roff_getop(const char *v, int *pos, char *res)

static int

roff_evalpar(struct roff *r, int ln,

const char *v, int *pos, int *res)

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(r, ln, v, pos, res, 1))

if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))

return(0);

return 0;

* Omission of the closing parenthesis

Line 2016 roff_evalpar(struct roff *r, int ln,

Line 2231 roff_evalpar(struct roff *r, int ln,

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

(*pos)++;

else if (NULL == res)

return(0);

return 0;

return(1);

return 1;

}

Line 2027 roff_evalpar(struct roff *r, int ln,

Line 2242 roff_evalpar(struct roff *r, int ln,

static int

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

int *pos, int *res, int skipwhite)

int *pos, int *res, int flags)

{

int mypos, operand2;

char operator;

Line 2037 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2252 roff_evalnum(struct roff *r, int ln, const char *v,

pos = &mypos;

}

if (skipwhite)

if (flags & ROFFNUM_WHITE)

while (isspace((unsigned char)v[*pos]))

(*pos)++;

if ( ! roff_evalpar(r, ln, v, pos, res))

if ( ! roff_evalpar(r, ln, v, pos, res, flags))

return(0);

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(r, ln, v, pos, &operand2))

if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))

return(0);

return 0;

if (skipwhite)

if (flags & ROFFNUM_WHITE)

while (isspace((unsigned char)v[*pos]))

(*pos)++;

Line 2130 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2345 roff_evalnum(struct roff *r, int ln, const char *v,

abort();

}

return(1);

return 1;

}

/* --- register management ------------------------------------------------ */

void

roff_setreg(struct roff *r, const char *name, int val, char sign)

{

Line 2169 roff_setreg(struct roff *r, const char *name, int val,

Line 2386 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->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;

}

Line 2197 roff_getreg(const struct roff *r, const char *name)

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

int val;

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

val = roff_getregro(name + 1);

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);

return reg->val;

return(0);

return 0;

}

static int

Line 2216 roff_getregn(const struct roff *r, const char *name, s

Line 2435 roff_getregn(const struct roff *r, const char *name, s

int val;

if ('.' == name[0] && 2 == len) {

val = roff_getregro(name + 1);

val = roff_getregro(r, name + 1);

if (-1 != val)

return (val);

return val;

}

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

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

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

return(reg->val);

return reg->val;

return(0);

return 0;

}

static int

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(r, name + 1);

if (-1 != val)

return 1;

}

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

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

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

return 1;

return 0;

}

static void

roff_freereg(struct roffreg *reg)

{

Line 2252 roff_nr(ROFF_ARGS)

Line 2491 roff_nr(ROFF_ARGS)

key = val = buf->buf + pos;

if (*key == '\0')

return(ROFF_IGN);

return ROFF_IGN;

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

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

return(ROFF_IGN);

return ROFF_IGN;

key[keysz] = '\0';

sign = *val;

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

val++;

if (roff_evalnum(r, ln, val, NULL, &iv, 0))

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

roff_setreg(r, key, iv, sign);

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 2278 roff_rr(ROFF_ARGS)

Line 2517 roff_rr(ROFF_ARGS)

name = cp = buf->buf + pos;

if (*name == '\0')

return(ROFF_IGN);

return ROFF_IGN;

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

name[namesz] = '\0';

Line 2294 roff_rr(ROFF_ARGS)

Line 2533 roff_rr(ROFF_ARGS)

free(reg->key.p);

free(reg);

}

return(ROFF_IGN);

return ROFF_IGN;

}

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

static enum rofferr

roff_rm(ROFF_ARGS)

{

Line 2312 roff_rm(ROFF_ARGS)

Line 2553 roff_rm(ROFF_ARGS)

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

break;

}

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

roff_it(ROFF_ARGS)

{

char *cp;

size_t len;

int iv;

/* Parse the number of lines. */

cp = buf->buf + pos;

len = strcspn(cp, " \t");

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

cp[len] = '\0';

if ((iv = mandoc_strntoi(cp, len, 10)) <= 0) {

mandoc_msg(MANDOCERR_IT_NONUM, r->parse,

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

return(ROFF_IGN);

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);

roffit_macro = mandoc_strdup(iv != 1 ||

return(ROFF_IGN);

strcmp(buf->buf + pos, "an-trap") ?

buf->buf + pos : "br");

return ROFF_IGN;

}

static enum rofferr

Line 2351 roff_Dd(ROFF_ARGS)

Line 2597 roff_Dd(ROFF_ARGS)

if (r->format == 0)

r->format = MPARSE_MDOC;

return(ROFF_CONT);

return ROFF_CONT;

}

static enum rofferr

Line 2366 roff_TH(ROFF_ARGS)

Line 2612 roff_TH(ROFF_ARGS)

if (r->format == 0)

r->format = MPARSE_MAN;

return(ROFF_CONT);

return ROFF_CONT;

}

static enum rofferr

Line 2380 roff_TE(ROFF_ARGS)

Line 2626 roff_TE(ROFF_ARGS)

free(buf->buf);

buf->buf = mandoc_strdup(".sp");

buf->sz = 4;

return(ROFF_REPARSE);

return ROFF_REPARSE;

}

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 2395 roff_T_(ROFF_ARGS)

Line 2641 roff_T_(ROFF_ARGS)

else

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

return(ROFF_IGN);

return ROFF_IGN;

}

Line 2418 roff_eqndelim(struct roff *r, struct buf *buf, int pos

Line 2664 roff_eqndelim(struct roff *r, struct buf *buf, int pos

cp2 = strchr(cp1, r->eqn == NULL ?

r->last_eqn->odelim : r->last_eqn->cdelim);

if (cp2 == NULL)

return(ROFF_CONT);

return ROFF_CONT;

*cp2++ = '\0';

bef_pr = bef_nl = aft_nl = aft_pr = "";

Line 2461 roff_eqndelim(struct roff *r, struct buf *buf, int pos

Line 2707 roff_eqndelim(struct roff *r, struct buf *buf, int pos

/* Toggle the in-line state of the eqn subsystem. */

r->eqn_inline = r->eqn == NULL;

return(ROFF_REPARSE);

return ROFF_REPARSE;

}

static enum rofferr

Line 2486 roff_EQ(ROFF_ARGS)

Line 2732 roff_EQ(ROFF_ARGS)

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

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

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 2494 roff_EN(ROFF_ARGS)

Line 2740 roff_EN(ROFF_ARGS)

{

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

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 2516 roff_TS(ROFF_ARGS)

Line 2762 roff_TS(ROFF_ARGS)

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

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

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 2524 roff_brp(ROFF_ARGS)

Line 2770 roff_brp(ROFF_ARGS)

{

buf->buf[pos - 1] = '\0';

return(ROFF_CONT);

return ROFF_CONT;

}

static enum rofferr

Line 2538 roff_cc(ROFF_ARGS)

Line 2784 roff_cc(ROFF_ARGS)

r->control = 0;

if (*p != '\0')

mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);

mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,

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

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 2553 roff_tr(ROFF_ARGS)

Line 2800 roff_tr(ROFF_ARGS)

p = buf->buf + pos;

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

mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);

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

return(ROFF_IGN);

return ROFF_IGN;

}

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

Line 2566 roff_tr(ROFF_ARGS)

Line 2813 roff_tr(ROFF_ARGS)

if (esc == ESCAPE_ERROR) {

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

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

return(ROFF_IGN);

return ROFF_IGN;

}

fsz = (size_t)(p - first);

}

Line 2577 roff_tr(ROFF_ARGS)

Line 2824 roff_tr(ROFF_ARGS)

if (esc == ESCAPE_ERROR) {

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

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

return(ROFF_IGN);

return ROFF_IGN;

}

ssz = (size_t)(p - second);

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

mandoc_msg(MANDOCERR_ARGCOUNT, r->parse,

mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,

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

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

second = " ";

p--;

}

Line 2602 roff_tr(ROFF_ARGS)

Line 2849 roff_tr(ROFF_ARGS)

r->xtab[(int)*first].sz = ssz;

}

return(ROFF_IGN);

return ROFF_IGN;

}

static enum rofferr

Line 2628 roff_so(ROFF_ARGS)

Line 2875 roff_so(ROFF_ARGS)

free(buf->buf);

buf->buf = cp;

*offs = 0;

return(ROFF_REPARSE);

return ROFF_REPARSE;

}

*offs = pos;

return(ROFF_SO);

return ROFF_SO;

}

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

static enum rofferr

roff_userdef(ROFF_ARGS)

{

const char *arg[9];

const char *arg[9], *ap;

char *cp, *n1, *n2;

int i;

int expand_count, i, ib, ie;

size_t asz, rsz;

* Collect pointers to macro argument strings

* and NUL-terminate them.

r->argc = 0;

cp = buf->buf + pos;

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

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

arg[i] = *cp == '\0' ? "" :

if (*cp == '\0')

mandoc_getarg(r->parse, &cp, ln, &pos);

arg[i] = "";

else {

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

r->argc = i + 1;

}

* Expand macro arguments.

buf->sz = 0;

n1 = cp = mandoc_strdup(r->current_string);

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

while ((cp = strstr(cp, "\\$")) != NULL) {

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

i = cp[2] - '1';

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

if (0 > i || 8 < i) {

expand_count = 0;

/* Not an argument invocation. */

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

cp += 2;

/* 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 = '\0';

cp -= 2;

buf->sz = mandoc_asprintf(&n2, "%s%s%s",

n1, arg[i], cp + 3) + 1;

cp = n2 + (cp - n1);

* Prevent infinite recursion.

free(n1);

n1 = n2;

if (cp >= n2)

expand_count = 1;

else if (++expand_count > EXPAND_LIMIT) {

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

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

free(buf->buf);

buf->buf = n1;

return ROFF_IGN;

}

* Determine the size of the expanded argument,

* taking escaping of quotes into account.

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

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

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

asz++;

if (*ap == '"')

asz += 3;

}

if (asz != 3) {

* Determine the size of the rest of the

* unexpanded macro, including the NUL.

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

* When shrinking, move before

* 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;

if (buf->sz == 0)

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

*offs = 0;

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

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

ROFF_REPARSE : ROFF_APPEND);

ROFF_REPARSE : ROFF_APPEND;

}

static size_t

Line 2693 roff_getname(struct roff *r, char **cpp, int ln, int p

Line 3034 roff_getname(struct roff *r, char **cpp, int ln, int p

name = *cpp;

if ('\0' == *name)

return(0);

return 0;

/* Read until end of name and terminate it with NUL. */

for (cp = name; 1; cp++) {

Line 2720 roff_getname(struct roff *r, char **cpp, int ln, int p

Line 3061 roff_getname(struct roff *r, char **cpp, int ln, int p

cp++;

*cpp = cp;

return(namesz);

return namesz;

}

Line 2820 roff_getstrn(const struct roff *r, const char *name, s

Line 3161 roff_getstrn(const struct roff *r, const char *name, s

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);

return n->val.p;

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);

return predefs[i].str;

return(NULL);

return NULL;

}

static void

Line 2843 roff_freestr(struct roffkv *r)

Line 3184 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);

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);

return r->last_eqn ? &r->last_eqn->eqn : NULL;

}

Line 2872 roff_strdup(const struct roff *r, const char *p)

Line 3215 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

Line 2888 roff_strdup(const struct roff *r, const char *p)

Line 3231 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);

Line 2946 roff_strdup(const struct roff *r, const char *p)

Line 3290 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);

return r->format;

}

Line 2976 roff_getcontrol(const struct roff *r, const char *cp,

Line 3320 roff_getcontrol(const struct roff *r, const char *cp,

if (0 != r->control && cp[pos] == r->control)

pos++;

else if (0 != r->control)

return(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;

}

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