mandoc/roff.c - diff

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Up to [cvsweb.bsd.lv] / mandoc

Diff for /mandoc/roff.c between version 1.178 and 1.247

version 1.178, 2013/07/13 12:52:07

version 1.247, 2015/01/01 19:28:49

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 15

* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <sys/types.h>

#include <assert.h>

#include <ctype.h>

#include <limits.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "mandoc.h"

#include "libroff.h"

#include "mandoc_aux.h"

#include "libmandoc.h"

#include "libroff.h"

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

#define RSTACK_MAX 128

Line 40 enum rofft {

Line 42 enum rofft {

ROFF_am,

ROFF_ami,

ROFF_am1,

ROFF_as,

ROFF_cc,

ROFF_ce,

ROFF_de,

ROFF_dei,

ROFF_de1,

ROFF_ds,

ROFF_el,

ROFF_fam,

ROFF_hw,

ROFF_hy,

ROFF_ie,

ROFF_if,

Line 55 enum rofft {

Line 61 enum rofft {

ROFF_nh,

ROFF_nr,

ROFF_ns,

ROFF_pl,

ROFF_ps,

ROFF_rm,

ROFF_rr,

ROFF_so,

ROFF_ta,

ROFF_tr,

Line 68 enum rofft {

Line 76 enum rofft {

ROFF_EQ,

ROFF_EN,

ROFF_cblock,

ROFF_ccond,

ROFF_USERDEF,

ROFF_MAX

};

enum roffrule {

ROFFRULE_ALLOW,

ROFFRULE_DENY

};

* A single register entity. If "set" is zero, the value of the

* register should be the default one, which is per-register.

* Registers are assumed to be unsigned ints for now.

struct reg {

int set; /* whether set or not */

unsigned int u; /* unsigned integer */

};

* An incredibly-simple string buffer.

struct roffstr {

Line 105 struct roffkv {

Line 97 struct roffkv {

struct roffkv *next; /* next in list */

};

* A single number register as part of a singly-linked list.

struct roffreg {

struct roffstr key;

int val;

struct roffreg *next;

};

struct roff {

enum mparset parsetype; /* requested parse type */

struct mparse *parse; /* parse point */

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

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

enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */

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

char control; /* control character */

struct roffreg *regtab; /* number registers */

int rstackpos; /* position in rstack */

struct reg regs[REG__MAX];

struct roffkv *strtab; /* user-defined strings & macros */

struct roffkv *xmbtab; /* multi-byte trans table (`tr') */

struct roffstr *xtab; /* single-byte trans table (`tr') */

Line 123 struct roff {

Line 122 struct roff {

struct eqn_node *last_eqn; /* last equation parsed */

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

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

int eqn_inline; /* current equation is inline */

int options; /* parse options */

int rstacksz; /* current size limit of rstack */

int rstackpos; /* position in rstack */

int format; /* current file in mdoc or man format */

char control; /* control character */

};

struct roffnode {

Line 133 struct roffnode {

Line 138 struct roffnode {

char *name; /* node name, e.g. macro name */

char *end; /* end-rules: custom token */

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

enum roffrule rule; /* current evaluation rule */

int rule; /* current evaluation rule */

};

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

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

char **bufp, /* input buffer */ \

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

size_t *szp, /* size of input buffer */ \

int ln, /* parse line */ \

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

int pos, /* current pos in buffer */ \

Line 176 static enum rofferr roff_block_text(ROFF_ARGS);

Line 180 static enum rofferr roff_block_text(ROFF_ARGS);

static enum rofferr roff_block_sub(ROFF_ARGS);

static enum rofferr roff_cblock(ROFF_ARGS);

static enum rofferr roff_cc(ROFF_ARGS);

static enum rofferr roff_ccond(ROFF_ARGS);

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

static enum rofferr roff_cond(ROFF_ARGS);

static enum rofferr roff_cond_text(ROFF_ARGS);

static enum rofferr roff_cond_sub(ROFF_ARGS);

static enum rofferr roff_ds(ROFF_ARGS);

static enum roffrule roff_evalcond(const char *, int *);

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

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

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 char *roff_getname(struct roff *, char **, int, int);

static size_t roff_getname(struct roff *, char **, int, int);

static const char *roff_getstrn(const struct roff *,

static int roff_getnum(const char *, 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 const char *roff_getstrn(const struct roff *,

const char *, size_t);

static enum rofferr roff_it(ROFF_ARGS);

static enum rofferr roff_line_ignore(ROFF_ARGS);

static enum rofferr roff_nr(ROFF_ARGS);

static void roff_openeqn(struct roff *, const char *,

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

int, int, const char *);

int, int);

static enum rofft roff_parse(struct roff *, const char *, int *);

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

static enum rofferr roff_parsetext(char **, size_t *, int, int *);

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

static enum rofferr roff_res(struct roff *,

char **, size_t *, int, int);

static enum rofferr roff_rm(ROFF_ARGS);

static enum rofferr roff_rr(ROFF_ARGS);

static void roff_setstr(struct roff *,

const char *, const char *, int);

static void roff_setstrn(struct roffkv **, const char *,

size_t, const char *, size_t, int);

static enum rofferr roff_so(ROFF_ARGS);

static enum rofferr roff_tr(ROFF_ARGS);

Line 225 static struct roffmac roffs[ROFF_MAX] = {

Line 241 static struct roffmac roffs[ROFF_MAX] = {

{ "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },

{ "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },

{ "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },

{ "as", roff_ds, NULL, NULL, 0, NULL },

{ "cc", roff_cc, NULL, NULL, 0, NULL },

{ "ce", roff_line_ignore, NULL, NULL, 0, NULL },

{ "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },

{ "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },

{ "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },

{ "ds", roff_ds, NULL, NULL, 0, NULL },

{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },

{ "fam", roff_line_ignore, NULL, NULL, 0, NULL },

{ "hw", roff_line_ignore, NULL, NULL, 0, NULL },

{ "hy", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },

{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },

Line 240 static struct roffmac roffs[ROFF_MAX] = {

Line 260 static struct roffmac roffs[ROFF_MAX] = {

{ "nh", roff_line_ignore, NULL, NULL, 0, NULL },

{ "nr", roff_nr, NULL, NULL, 0, NULL },

{ "ns", roff_line_ignore, NULL, NULL, 0, NULL },

{ "pl", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ps", roff_line_ignore, NULL, NULL, 0, NULL },

{ "rm", roff_rm, NULL, NULL, 0, NULL },

{ "rr", roff_rr, NULL, NULL, 0, NULL },

{ "so", roff_so, NULL, NULL, 0, NULL },

{ "ta", roff_line_ignore, NULL, NULL, 0, NULL },

{ "tr", roff_tr, NULL, NULL, 0, NULL },

Line 253 static struct roffmac roffs[ROFF_MAX] = {

Line 275 static struct roffmac roffs[ROFF_MAX] = {

{ "EQ", roff_EQ, NULL, NULL, 0, NULL },

{ "EN", roff_EN, NULL, NULL, 0, NULL },

{ ".", roff_cblock, NULL, NULL, 0, NULL },

{ "\\}", roff_ccond, NULL, NULL, 0, NULL },

{ NULL, roff_userdef, NULL, NULL, 0, NULL },

};

/* 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",

"Ds", "Dt", "Dv", "Dx", "D1",

"Dt", "Dv", "Dx", "D1",

"Ec", "Ed", "Ef", "Ek", "El", "Em", "em",

"Ec", "Ed", "Ef", "Ek", "El", "Em",

"En", "Eo", "Eq", "Er", "Es", "Ev", "Ex",

"En", "Eo", "Er", "Es", "Ev", "Ex",

"Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",

"Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp", "LP",

"Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",

"Me", "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",

"Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",

"Oc", "Oo", "Op", "Os", "Ot", "Ox",

"Pa", "Pc", "Pf", "Po", "Pp", "PP", "pp", "Pq",

"Pa", "Pc", "Pf", "Po", "Pp", "Pq",

"Qc", "Ql", "Qo", "Qq", "Or", "Rd", "Re", "Rs", "Rv",

"Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",

"Sc", "Sf", "Sh", "SH", "Sm", "So", "Sq",

"Sc", "Sh", "Sm", "So", "Sq",

"Ss", "St", "Sx", "Sy",

"Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",

"%A", "%B", "%D", "%I", "%J", "%N", "%O",

"%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", "BT", "DE", "DS", "DT",

"AT", "B", "BI", "BR", "DT",

"EE", "EN", "EQ", "EX", "HF", "HP", "I", "IB", "IP", "IR",

"EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",

"LP", "ME", "MT", "OP", "P", "PD", "PP", "PT",

"LP", "OP", "P", "PD", "PP",

"R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS", "SY",

"R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",

"TE", "TH", "TP", "TQ", "TS", "T&", "UC", "UE", "UR", "YS",

"TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",

NULL

};

Line 300 static const struct predef predefs[PREDEFS_MAX] = {

Line 323 static const struct predef predefs[PREDEFS_MAX] = {

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

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

static void

roffhash_init(void)

{

Line 352 roffhash_find(const char *p, size_t s)

Line 376 roffhash_find(const char *p, size_t s)

return(ROFF_MAX);

}

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

* pending.

Line 363 roffnode_pop(struct roff *r)

Line 386 roffnode_pop(struct roff *r)

struct roffnode *p;

assert(r->last);

p = r->last;

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

free(p->name);

Line 371 roffnode_pop(struct roff *r)

Line 394 roffnode_pop(struct roff *r)

free(p);

}

* Push a roff node onto the instruction stack. This must later be

* removed with roffnode_pop().

Line 389 roffnode_push(struct roff *r, enum rofft tok, const ch

Line 411 roffnode_push(struct roff *r, enum rofft tok, const ch

p->parent = r->last;

p->line = line;

p->col = col;

p->rule = p->parent ? p->parent->rule : ROFFRULE_DENY;

p->rule = p->parent ? p->parent->rule : 0;

r->last = p;

}

static void

roff_free1(struct roff *r)

{

Line 406 roff_free1(struct roff *r)

Line 427 roff_free1(struct roff *r)

r->first_tbl = tbl->next;

tbl_free(tbl);

}

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

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

r->first_eqn = e->next;

eqn_free(e);

}

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

while (r->last)

roffnode_pop(r);

free (r->rstack);

r->rstack = NULL;

r->rstacksz = 0;

r->rstackpos = -1;

roff_freereg(r->regtab);

r->regtab = NULL;

roff_freestr(r->strtab);

roff_freestr(r->xmbtab);

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

if (r->xtab)

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

free(r->xtab[i].p);

free(r->xtab);

r->xtab = NULL;

}

Line 435 roff_free1(struct roff *r)

Line 460 roff_free1(struct roff *r)

void

roff_reset(struct roff *r)

{

int i;

roff_free1(r);

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

r->control = 0;

memset(&r->regs, 0, sizeof(struct reg) * REG__MAX);

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

roff_setstr(r, predefs[i].name, predefs[i].str, 0);

}

void

roff_free(struct roff *r)

{

Line 455 roff_free(struct roff *r)

Line 474 roff_free(struct roff *r)

free(r);

}

struct roff *

roff_alloc(enum mparset type, struct mparse *parse)

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

{

struct roff *r;

int i;

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

r->parsetype = type;

r->parse = parse;

r->mchars = mchars;

r->options = options;

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

r->rstackpos = -1;

roffhash_init();

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

roff_setstr(r, predefs[i].name, predefs[i].str, 0);

return(r);

}

* Pre-filter each and every line for reserved words (one beginning with

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

* `\*', e.g., `\*(ab'). These must be handled before the actual line

* used in numerical expressions and conditional requests.

* is processed.

* Also check the syntax of the remaining escape sequences.

* This also checks the syntax of regular escapes.

static enum rofferr

roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos)

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

{

enum mandoc_esc esc;

char ubuf[24]; /* buffer to print the number */

const char *stesc; /* start of an escape sequence ('\\') */

const char *start; /* start of the string to process */

char *stesc; /* start of an escape sequence ('\\') */

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 */

int i, maxl, expand_count;

char *nbuf; /* new buffer to copy buf->buf to */

size_t nsz;

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

char *n;

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

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

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 */

char term; /* character terminating the escape */

expand_count = 0;

start = buf->buf + pos;

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

while (stesc-- > start) {

again:

/* Search backwards for the next backslash. */

cp = *bufp + pos;

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

stesc = cp++;

if (*stesc != '\\')

* The second character must be an asterisk.

continue;

* If it isn't, skip it anyway: It is escaped,

* so it can't start another escape sequence.

if ('\0' == *cp)

/* If it is escaped, skip it. */

return(ROFF_CONT);

if ('*' != *cp) {

for (cp = stesc - 1; cp >= start; cp--)

res = cp;

if (*cp != '\\')

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

break;

if (ESCAPE_ERROR != esc)

continue;

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

cp = res;

stesc = (char *)cp;

mandoc_msg

continue;

(MANDOCERR_BADESCAPE, r->parse,

ln, (int)(stesc - *bufp), NULL);

return(ROFF_CONT);

}

cp++;

/* Decide whether to expand or to check only. */

term = '\0';

cp = stesc + 1;

switch (*cp) {

case '*':

res = NULL;

break;

case 'B':

/* FALLTHROUGH */

case 'w':

term = cp[1];

/* FALLTHROUGH */

case 'n':

res = ubuf;

break;

default:

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

if (esc == ESCAPE_ERROR ||

(esc == ESCAPE_SPECIAL &&

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

mandoc_vmsg(MANDOCERR_ESC_BAD,

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

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

continue;

}

if (EXPAND_LIMIT < ++expand_count) {

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

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

return(ROFF_IGN);

}

* The third character decides the length

* of the name of the string.

* of the name of the string or register.

* Save a pointer to the name.

switch (*cp) {

if (term == '\0') {

case ('\0'):

switch (*++cp) {

return(ROFF_CONT);

case '\0':

case ('('):

maxl = 0;

cp++;

break;

maxl = 2;

case '(':

break;

cp++;

case ('['):

maxl = 2;

cp++;

break;

case '[':

cp++;

term = ']';

maxl = 0;

break;

default:

maxl = 1;

break;

}

} else {

cp += 2;

maxl = 0;

break;

default:

maxl = 1;

break;

}

stnam = cp;

/* Advance to the end of the name. */

for (i = 0; 0 == maxl || i < maxl; i++, cp++) {

arg_complete = 1;

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

for (naml = 0; maxl == 0 || naml < maxl; naml++, cp++) {

mandoc_msg

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

(MANDOCERR_BADESCAPE,

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

r->parse, ln,

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

(int)(stesc - *bufp), NULL);

arg_complete = 0;

return(ROFF_CONT);

break;

}

if (0 == maxl && ']' == *cp)

if (maxl == 0 && *cp == term) {

cp++;

break;

}

Line 565 again:

Line 620 again:

* undefined, resume searching for escapes.

res = roff_getstrn(r, stnam, (size_t)i);

switch (stesc[1]) {

case '*':

if (arg_complete)

res = roff_getstrn(r, stnam, naml);

break;

case 'B':

npos = 0;

ubuf[0] = arg_complete &&

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

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

ubuf[1] = '\0';

break;

case 'n':

if (arg_complete)

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

roff_getregn(r, stnam, naml));

else

ubuf[0] = '\0';

break;

case 'w':

/* use even incomplete args */

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

24 * (int)naml);

break;

}

if (NULL == res) {

if (res == NULL) {

mandoc_msg

mandoc_vmsg(MANDOCERR_STR_UNDEF,

(MANDOCERR_BADESCAPE, r->parse,

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

ln, (int)(stesc - *bufp), NULL);

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

res = "";

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

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

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

return(ROFF_IGN);

}

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

pos = stesc - *bufp;

*stesc = '\0';

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

buf->buf, res, cp) + 1;

nsz = *szp + strlen(res) + 1;

/* Prepare for the next replacement. */

n = mandoc_malloc(nsz);

strlcpy(n, *bufp, (size_t)(stesc - *bufp + 1));

start = nbuf + pos;

strlcat(n, res, nsz);

stesc = nbuf + (stesc - buf->buf) + strlen(res);

strlcat(n, cp + (maxl ? 0 : 1), nsz);

free(buf->buf);

buf->buf = nbuf;

free(*bufp);

*bufp = n;

*szp = nsz;

if (EXPAND_LIMIT >= ++expand_count)

goto again;

/* Just leave the string unexpanded. */

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse, ln, pos, NULL);

return(ROFF_IGN);

}

return(ROFF_CONT);

}

Line 606 again:

Line 679 again:

* Decrement and spring input line trap.

static enum rofferr

roff_parsetext(char **bufp, size_t *szp, int pos, int *offs)

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

{

size_t sz;

const char *start;

Line 614 roff_parsetext(char **bufp, size_t *szp, int pos, int

Line 687 roff_parsetext(char **bufp, size_t *szp, int pos, int

int isz;

enum mandoc_esc esc;

start = p = *bufp + pos;

start = p = buf->buf + pos;

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

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

sz = strcspn(p, "-\\");

p += sz;

if ('\0' == *p)

if (*p == '\0')

break;

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

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

/* Skip over escapes. */

p++;

esc = mandoc_escape

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

((const char **)&p, NULL, NULL);

if (esc == ESCAPE_ERROR)

if (ESCAPE_ERROR == esc)

break;

continue;

} else if (p == start) {

Line 643 roff_parsetext(char **bufp, size_t *szp, int pos, int

Line 715 roff_parsetext(char **bufp, size_t *szp, int pos, int

}

/* Spring the input line trap. */

if (1 == roffit_lines) {

if (roffit_lines == 1) {

isz = asprintf(&p, "%s\n.%s", *bufp, roffit_macro);

isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);

if (-1 == isz) {

free(buf->buf);

perror(NULL);

buf->buf = p;

exit((int)MANDOCLEVEL_SYSERR);

buf->sz = isz + 1;

}

free(*bufp);

*bufp = p;

*szp = isz + 1;

*offs = 0;

free(roffit_macro);

roffit_lines = 0;

return(ROFF_REPARSE);

} else if (1 < roffit_lines)

} else if (roffit_lines > 1)

--roffit_lines;

return(ROFF_CONT);

}

enum rofferr

roff_parseln(struct roff *r, int ln, char **bufp,

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

size_t *szp, int pos, int *offs)

{

enum rofft t;

enum rofferr e;

int ppos, ctl;

int pos; /* parse point */

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

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

int ctl; /* macro line (boolean) */

ppos = pos = *offs;

* Run the reserved-word filter only if we have some reserved

* words to fill in.

e = roff_res(r, bufp, szp, ln, pos);

/* Handle in-line equation delimiters. */

if (ROFF_IGN == e)

if (r->tbl == NULL &&

r->last_eqn != NULL && r->last_eqn->delim &&

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

e = roff_eqndelim(r, buf, pos);

if (e == ROFF_REPARSE)

return(e);

assert(e == ROFF_CONT);

}

/* Expand some escape sequences. */

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

if (e == ROFF_IGN)

return(e);

assert(ROFF_CONT == e);

assert(e == ROFF_CONT);

ppos = pos;

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

ctl = roff_getcontrol(r, *bufp, &pos);

* First, if a scope is open and we're not a macro, pass the

Line 693 roff_parseln(struct roff *r, int ln, char **bufp,

Line 772 roff_parseln(struct roff *r, int ln, char **bufp,

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

t = r->last->tok;

assert(roffs[t].text);

e = (*roffs[t].text)

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

(r, t, bufp, szp, ln, pos, pos, offs);

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

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

if (e != ROFF_CONT)

if (ROFF_CONT != e)

return(e);

if (r->eqn)

}

return(eqn_read(&r->eqn, ln, *bufp, pos, offs));

if (r->eqn)

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

if ( ! ctl) {

if (r->tbl)

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

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

return(roff_parsetext(bufp, szp, pos, offs));

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

} else if ( ! ctl) {

}

if (r->eqn)

return(eqn_read(&r->eqn, ln, *bufp, pos, offs));

if (r->tbl)

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

return(roff_parsetext(bufp, szp, pos, offs));

} else if (r->eqn)

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

/* Skip empty request lines. */

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

mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,

ln, pos, NULL);

return(ROFF_IGN);

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

return(ROFF_IGN);

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

* as it may want to preprocess before doing anything with it.

Line 721 roff_parseln(struct roff *r, int ln, char **bufp,

Line 803 roff_parseln(struct roff *r, int ln, char **bufp,

if (r->last) {

t = r->last->tok;

assert(roffs[t].sub);

return((*roffs[t].sub)

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

(r, t, bufp, szp,

ln, ppos, pos, offs));

}

/* No scope is open. This is a new request or macro. */

spos = pos;

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

/* Tables ignore most macros. */

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

mandoc_msg(MANDOCERR_TBLMACRO, r->parse,

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

return(ROFF_IGN);

}

* Lastly, as we've no scope open, try to look up and execute

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

* the new macro. If no macro is found, simply return and let

* Let the standard macro set parsers handle it.

* the compilers handle it.

if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos)))

if (t == ROFF_MAX)

return(ROFF_CONT);

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

assert(roffs[t].proc);

return((*roffs[t].proc)

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

(r, t, bufp, szp,

ln, ppos, pos, offs));

}

void

roff_endparse(struct roff *r)

{

if (r->last)

mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,

mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,

r->last->line, r->last->col, NULL);

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

roffs[r->last->tok].name);

if (r->eqn) {

mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,

mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,

r->eqn->eqn.ln, r->eqn->eqn.pos, NULL);

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

eqn_end(&r->eqn);

}

if (r->tbl) {

mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,

mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,

r->tbl->line, r->tbl->pos, NULL);

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

tbl_end(&r->tbl);

}

Line 768 roff_endparse(struct roff *r)

Line 860 roff_endparse(struct roff *r)

* form of ".foo xxx" in the usual way.

static enum rofft

roff_parse(struct roff *r, const char *buf, int *pos)

roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)

{

char *cp;

const char *mac;

size_t maclen;

enum rofft t;

if ('\0' == buf[*pos] || '"' == buf[*pos] ||

cp = buf + *pos;

'\t' == buf[*pos] || ' ' == buf[*pos])

if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)

return(ROFF_MAX);

mac = cp;

* We stop the macro parse at an escape, tab, space, or nil.

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

* However, `\}' is also a valid macro, so make sure we don't

* clobber it by seeing the `\' as the end of token.

mac = buf + *pos;

maclen = strcspn(mac + 1, " \\\t\0") + 1;

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

? ROFF_USERDEF : roffhash_find(mac, maclen);

*pos += (int)maclen;

if (ROFF_MAX != t)

*pos = cp - buf;

while (buf[*pos] && ' ' == buf[*pos])

(*pos)++;

return(t);

}

/* ARGSUSED */

static enum rofferr

roff_cblock(ROFF_ARGS)

{

Line 808 roff_cblock(ROFF_ARGS)

Line 893 roff_cblock(ROFF_ARGS)

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

if (NULL == r->last) {

if (r->last == NULL) {

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "..");

return(ROFF_IGN);

}

switch (r->last->tok) {

case (ROFF_am):

case ROFF_am:

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

/* FALLTHROUGH */

case (ROFF_ami):

case ROFF_ami:

/* FALLTHROUGH */

case (ROFF_am1):

case ROFF_de:

/* FALLTHROUGH */

case (ROFF_de):

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

/* FALLTHROUGH */

case (ROFF_dei):

case ROFF_dei:

/* FALLTHROUGH */

case (ROFF_ig):

case ROFF_ig:

break;

default:

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "..");

return(ROFF_IGN);

}

if ((*bufp)[pos])

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

mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);

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

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

roffnode_pop(r);

roffnode_cleanscope(r);

Line 841 roff_cblock(ROFF_ARGS)

Line 928 roff_cblock(ROFF_ARGS)

}

static void

roffnode_cleanscope(struct roff *r)

{

Line 853 roffnode_cleanscope(struct roff *r)

Line 939 roffnode_cleanscope(struct roff *r)

}

static void

/* ARGSUSED */

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

static enum rofferr

roff_ccond(ROFF_ARGS)

{

if (NULL == r->last) {

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

return(ROFF_IGN);

ln, ppos, "\\}");

return;

}

switch (r->last->tok) {

case (ROFF_el):

case ROFF_el:

/* FALLTHROUGH */

case (ROFF_ie):

case ROFF_ie:

/* FALLTHROUGH */

case (ROFF_if):

case ROFF_if:

break;

default:

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

return(ROFF_IGN);

ln, ppos, "\\}");

return;

}

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

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

return(ROFF_IGN);

ln, ppos, "\\}");

return;

}

if ((*bufp)[pos])

mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);

roffnode_pop(r);

roffnode_cleanscope(r);

return(ROFF_IGN);

return;

}

/* ARGSUSED */

static enum rofferr

roff_block(ROFF_ARGS)

{

int sv;

const char *name;

size_t sz;

char *iname, *cp;

char *name;

size_t namesz;

name = NULL;

/* Ignore groff compatibility mode for now. */

if (ROFF_ig != tok) {

if (tok == ROFF_de1)

if ('\0' == (*bufp)[pos]) {

tok = ROFF_de;

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

else if (tok == ROFF_am1)

return(ROFF_IGN);

tok = ROFF_am;

}

/* Parse the macro name argument. */

* Re-write `de1', since we don't really care about

* groff's strange compatibility mode, into `de'.

if (ROFF_de1 == tok)

cp = buf->buf + pos;

tok = ROFF_de;

if (tok == ROFF_ig) {

if (ROFF_de == tok)

iname = NULL;

name = *bufp + pos;

namesz = 0;

else

} else {

mandoc_msg(MANDOCERR_REQUEST, r->parse, ln, ppos,

iname = cp;

roffs[tok].name);

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

iname[namesz] = '\0';

}

while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos]))

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

pos++;

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

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

(*bufp)[pos++] = '\0';

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

mandoc_vmsg(MANDOCERR_STR_UNDEF,

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

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

namesz = 0;

} else

namesz = strlen(name);

} else

name = iname;

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

mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,

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

return(ROFF_IGN);

}

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

Line 931 roff_block(ROFF_ARGS)

Line 1023 roff_block(ROFF_ARGS)

* At the beginning of a `de' macro, clear the existing string

* with the same name, if there is one. New content will be

* added from roff_block_text() in multiline mode.

* appended from roff_block_text() in multiline mode.

if (ROFF_de == tok)

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

roff_setstr(r, name, "", 0);

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

if ('\0' == (*bufp)[pos])

if (*cp == '\0')

return(ROFF_IGN);

/* If present, process the custom end-of-line marker. */

/* Get the custom end marker. */

sv = pos;

iname = cp;

while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos]))

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

pos++;

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

* Note: groff does NOT like escape characters in the input.

* Instead of detecting this, we're just going to let it fly and

* to hell with it.

assert(pos > sv);

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

sz = (size_t)(pos - sv);

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

mandoc_vmsg(MANDOCERR_STR_UNDEF,

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

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

namesz = 0;

} else

namesz = strlen(name);

} else

name = iname;

if (1 == sz && '.' == (*bufp)[sv])

if (namesz)

return(ROFF_IGN);

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

r->last->end = mandoc_malloc(sz + 1);

if (*cp != '\0')

mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,

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

memcpy(r->last->end, *bufp + sv, sz);

r->last->end[(int)sz] = '\0';

if ((*bufp)[pos])

mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_block_sub(ROFF_ARGS)

{

Line 988 roff_block_sub(ROFF_ARGS)

Line 1077 roff_block_sub(ROFF_ARGS)

if (r->last->end) {

for (i = pos, j = 0; r->last->end[j]; j++, i++)

if ((*bufp)[i] != r->last->end[j])

if (buf->buf[i] != r->last->end[j])

break;

if ('\0' == r->last->end[j] &&

if (r->last->end[j] == '\0' &&

('\0' == (*bufp)[i] ||

(buf->buf[i] == '\0' ||

' ' == (*bufp)[i] ||

buf->buf[i] == ' ' ||

'\t' == (*bufp)[i])) {

buf->buf[i] == '\t')) {

roffnode_pop(r);

roffnode_cleanscope(r);

while (' ' == (*bufp)[i] || '\t' == (*bufp)[i])

while (buf->buf[i] == ' ' || buf->buf[i] == '\t')

i++;

pos = i;

if (ROFF_MAX != roff_parse(r, *bufp, &pos))

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

ROFF_MAX)

return(ROFF_RERUN);

return(ROFF_IGN);

}

Line 1013 roff_block_sub(ROFF_ARGS)

Line 1103 roff_block_sub(ROFF_ARGS)

* pulling it out of the hashtable.

t = roff_parse(r, *bufp, &pos);

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

if (t != ROFF_cblock) {

* Macros other than block-end are only significant

if (tok != ROFF_ig)

* in `de' blocks; elsewhere, simply throw them away.

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

if (ROFF_cblock != t) {

if (ROFF_de == tok)

roff_setstr(r, r->last->name, *bufp + ppos, 1);

return(ROFF_IGN);

}

assert(roffs[t].proc);

return((*roffs[t].proc)(r, t, bufp, szp,

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

ln, ppos, pos, offs));

}

/* ARGSUSED */

static enum rofferr

roff_block_text(ROFF_ARGS)

{

if (ROFF_de == tok)

if (tok != ROFF_ig)

roff_setstr(r, r->last->name, *bufp + pos, 1);

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

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_cond_sub(ROFF_ARGS)

{

enum rofft t;

enum roffrule rr;

char *ep;

int rr;

rr = r->last->rule;

roffnode_cleanscope(r);

t = roff_parse(r, *bufp, &pos);

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

* Fully handle known macros when they are structurally

* required or when the conditional evaluated to true.

if ((ROFF_MAX != t) &&

if ((t != ROFF_MAX) &&

(ROFF_ccond == t || ROFFRULE_ALLOW == rr ||

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

ROFFMAC_STRUCT & roffs[t].flags)) {

assert(roffs[t].proc);

return((*roffs[t].proc)(r, t, bufp, szp,

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

ln, ppos, pos, offs));

}

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

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

* drop the line completely.

ep = &(*bufp)[pos];

ep = buf->buf + pos;

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

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

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

rr = 0;

continue;

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

* If we're at the end of line, then just chop

* off the \} and resize the buffer.

* If we aren't, then convert it to spaces.

if ('\0' == *(ep + 1)) {

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

*--ep = '\0';

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

*szp -= 2;

*ep = '&';

} else

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

*(ep - 1) = *ep = ' ';

}

if (*ep != '\0')

roff_ccond(r, ROFF_ccond, bufp, szp,

++ep;

ln, pos, pos + 2, offs);

break;

}

return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);

return(rr ? ROFF_CONT : ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_cond_text(ROFF_ARGS)

{

char *ep;

enum roffrule rr;

int rr;

rr = r->last->rule;

roffnode_cleanscope(r);

ep = &(*bufp)[pos];

ep = buf->buf + pos;

for ( ; NULL != (ep = strchr(ep, '\\')); ep++) {

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

ep++;

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

if ('}' != *ep)

*ep = '&';

continue;

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

*ep = '&';

}

roff_ccond(r, ROFF_ccond, bufp, szp,

if (*ep != '\0')

ln, pos, pos + 2, offs);

++ep;

}

return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);

return(rr ? ROFF_CONT : ROFF_IGN);

}

static enum roffrule

roff_evalcond(const char *v, int *pos)

* Parse a single signed integer number. Stop at the first non-digit.

* If there is at least one digit, return success and advance the

* parse point, else return failure and let the parse point unchanged.

* Ignore overflows, treat them just like the C language.

static int

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

{

int myres, n, p;

if (NULL == res)

res = &myres;

p = *pos;

n = v[p] == '-';

if (n)

p++;

for (*res = 0; isdigit((unsigned char)v[p]); p++)

*res = 10 * *res + v[p] - '0';

if (p == *pos + n)

return 0;

if (n)

*res = -*res;

*pos = p;

return 1;

}

* Evaluate a string comparison condition.

* The first character is the delimiter.

* Succeed if the string up to its second occurrence

* matches the string up to its third occurence.

* Advance the cursor after the third occurrence

* or lacking that, to the end of the line.

static int

roff_evalstrcond(const char *v, int *pos)

{

const char *s1, *s2, *s3;

int match;

match = 0;

s1 = v + *pos; /* initial delimiter */

s2 = s1 + 1; /* for scanning the first string */

s3 = strchr(s2, *s1); /* for scanning the second string */

if (NULL == s3) /* found no middle delimiter */

goto out;

while ('\0' != *++s3) {

if (*s2 != *s3) { /* mismatch */

s3 = strchr(s3, *s1);

break;

}

if (*s3 == *s1) { /* found the final delimiter */

match = 1;

break;

}

s2++;

}

out:

if (NULL == s3)

s3 = strchr(s2, '\0');

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

s3++;

*pos = s3 - v;

return(match);

}

* Evaluate an optionally negated single character, numerical,

* or string condition.

static int

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

{

int number, savepos, wanttrue;

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

wanttrue = 0;

(*pos)++;

} else

wanttrue = 1;

switch (v[*pos]) {

case ('n'):

case '\0':

return(0);

case 'n':

/* FALLTHROUGH */

case 'o':

(*pos)++;

return(ROFFRULE_ALLOW);

return(wanttrue);

case ('e'):

case 'c':

/* FALLTHROUGH */

case ('o'):

case 'd':

/* FALLTHROUGH */

case ('t'):

case 'e':

/* FALLTHROUGH */

case 'r':

/* FALLTHROUGH */

case 't':

/* FALLTHROUGH */

case 'v':

(*pos)++;

return(ROFFRULE_DENY);

return(!wanttrue);

default:

break;

}

while (v[*pos] && ' ' != v[*pos])

savepos = *pos;

(*pos)++;

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

return(ROFFRULE_DENY);

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

else if (*pos == savepos)

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

else

return (0);

}

/* ARGSUSED */

static enum rofferr

roff_line_ignore(ROFF_ARGS)

{

Line 1148 roff_line_ignore(ROFF_ARGS)

Line 1320 roff_line_ignore(ROFF_ARGS)

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_cond(ROFF_ARGS)

{

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

* An `.el' has no conditional body: it will consume the value

* of the current rstack entry set in prior `ie' calls or

* defaults to DENY.

* If we're not an `el', however, then evaluate the conditional.

r->last->rule = ROFF_el == tok ?

r->last->rule = tok == ROFF_el ?

(r->rstackpos < 0 ?

(r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :

ROFFRULE_DENY : r->rstack[r->rstackpos--]) :

roff_evalcond(r, ln, buf->buf, &pos);

roff_evalcond(*bufp, &pos);

* An if-else will put the NEGATION of the current evaluated

* conditional into the stack of rules.

if (ROFF_ie == tok) {

if (tok == ROFF_ie) {

if (r->rstackpos == RSTACK_MAX - 1) {

if (r->rstackpos + 1 == r->rstacksz) {

mandoc_msg(MANDOCERR_MEM,

r->rstacksz += 16;

r->parse, ln, ppos, NULL);

r->rstack = mandoc_reallocarray(r->rstack,

return(ROFF_ERR);

r->rstacksz, sizeof(int));

}

r->rstack[++r->rstackpos] =

r->rstack[++r->rstackpos] = !r->last->rule;

ROFFRULE_DENY == r->last->rule ?

ROFFRULE_ALLOW : ROFFRULE_DENY;

}

/* If the parent has false as its rule, then so do we. */

if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule)

if (r->last->parent && !r->last->parent->rule)

r->last->rule = ROFFRULE_DENY;

r->last->rule = 0;

* Determine scope.

Line 1195 roff_cond(ROFF_ARGS)

Line 1363 roff_cond(ROFF_ARGS)

* not even whitespace, use next-line scope.

if ('\0' == (*bufp)[pos]) {

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

r->last->endspan = 2;

goto out;

}

while (' ' == (*bufp)[pos])

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

pos++;

/* An opening brace requests multiline scope. */

if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) {

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

r->last->endspan = -1;

pos += 2;

goto out;

}

* Anything else following the conditional causes

Line 1217 roff_cond(ROFF_ARGS)

Line 1385 roff_cond(ROFF_ARGS)

* nothing but trailing whitespace.

if ('\0' == (*bufp)[pos])

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

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

mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,

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

r->last->endspan = 1;

Line 1227 out:

Line 1396 out:

return(ROFF_RERUN);

}

/* ARGSUSED */

static enum rofferr

roff_ds(ROFF_ARGS)

{

char *name, *string;

char *string;

const char *name;

size_t namesz;

* A symbol is named by the first word following the macro

* The first word is the name of the string.

* invocation up to a space. Its value is anything after the

* If it is empty or terminated by an escape sequence,

* name's trailing whitespace and optional double-quote. Thus,

* abort the `ds' request without defining anything.

* [.ds foo "bar " ]

* will have `bar " ' as its value.

string = *bufp + pos;

name = string = buf->buf + pos;

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

if (*name == '\0')

if ('\0' == *name)

return(ROFF_IGN);

/* Read past initial double-quote. */

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

if ('"' == *string)

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

return(ROFF_IGN);

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

if (*string == '"')

string++;

/* The rest is the value. */

roff_setstr(r, name, string, 0);

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

ROFF_as == tok);

return(ROFF_IGN);

}

int

roff_regisset(const struct roff *r, enum regs reg)

* Parse a single operator, one or two characters long.

* If the operator is recognized, return success and advance the

* parse point, else return failure and let the parse point unchanged.

static int

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

{

return(r->regs[(int)reg].set);

*res = v[*pos];

switch (*res) {

case '+':

/* FALLTHROUGH */

case '-':

/* FALLTHROUGH */

case '*':

/* FALLTHROUGH */

case '/':

/* FALLTHROUGH */

case '%':

/* FALLTHROUGH */

case '&':

/* FALLTHROUGH */

case ':':

break;

case '<':

switch (v[*pos + 1]) {

case '=':

*res = 'l';

(*pos)++;

break;

case '>':

*res = '!';

(*pos)++;

break;

case '?':

*res = 'i';

(*pos)++;

break;

default:

break;

}

break;

case '>':

switch (v[*pos + 1]) {

case '=':

*res = 'g';

(*pos)++;

break;

case '?':

*res = 'a';

(*pos)++;

break;

default:

break;

}

break;

case '=':

if ('=' == v[*pos + 1])

(*pos)++;

break;

default:

return(0);

}

(*pos)++;

return(*res);

}

unsigned int

roff_regget(const struct roff *r, enum regs reg)

* Evaluate either a parenthesized numeric expression

* or a single signed integer number.

static int

roff_evalpar(struct roff *r, int ln,

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

{

return(r->regs[(int)reg].u);

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

return(roff_getnum(v, pos, res));

(*pos)++;

if ( ! roff_evalnum(r, ln, v, pos, res, 1))

return(0);

* Omission of the closing parenthesis

* is an error in validation mode,

* but ignored in evaluation mode.

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

(*pos)++;

else if (NULL == res)

return(0);

return(1);

}

* Evaluate a complete numeric expression.

* Proceed left to right, there is no concept of precedence.

static int

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

int *pos, int *res, int skipwhite)

{

int mypos, operand2;

char operator;

if (NULL == pos) {

mypos = 0;

pos = &mypos;

}

if (skipwhite)

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

(*pos)++;

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

return(0);

while (1) {

if (skipwhite)

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

(*pos)++;

if ( ! roff_getop(v, pos, &operator))

break;

if (skipwhite)

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

(*pos)++;

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

return(0);

if (skipwhite)

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

(*pos)++;

if (NULL == res)

continue;

switch (operator) {

case '+':

*res += operand2;

break;

case '-':

*res -= operand2;

break;

case '*':

*res *= operand2;

break;

case '/':

if (operand2 == 0) {

mandoc_msg(MANDOCERR_DIVZERO,

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

*res = 0;

break;

}

*res /= operand2;

break;

case '%':

if (operand2 == 0) {

mandoc_msg(MANDOCERR_DIVZERO,

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

*res = 0;

break;

}

*res %= operand2;

break;

case '<':

*res = *res < operand2;

break;

case '>':

*res = *res > operand2;

break;

case 'l':

*res = *res <= operand2;

break;

case 'g':

*res = *res >= operand2;

break;

case '=':

*res = *res == operand2;

break;

case '!':

*res = *res != operand2;

break;

case '&':

*res = *res && operand2;

break;

case ':':

*res = *res || operand2;

break;

case 'i':

if (operand2 < *res)

*res = operand2;

break;

case 'a':

if (operand2 > *res)

*res = operand2;

break;

default:

abort();

}

return(1);

}

void

roff_regunset(struct roff *r, enum regs reg)

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

{

struct roffreg *reg;

r->regs[(int)reg].set = 0;

/* Search for an existing register with the same name. */

reg = r->regtab;

while (reg && strcmp(name, reg->key.p))

reg = reg->next;

if (NULL == reg) {

/* Create a new register. */

reg = mandoc_malloc(sizeof(struct roffreg));

reg->key.p = mandoc_strdup(name);

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

reg->val = 0;

reg->next = r->regtab;

r->regtab = reg;

}

if ('+' == sign)

reg->val += val;

else if ('-' == sign)

reg->val -= val;

else

reg->val = val;

}

/* ARGSUSED */

* Handle some predefined read-only number registers.

* For now, return -1 if the requested register is not predefined;

* in case a predefined read-only register having the value -1

* were to turn up, another special value would have to be chosen.

static int

roff_getregro(const char *name)

{

switch (*name) {

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

return(0);

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

return(1);

case 'H': /* Fixed horizontal resolution. */

return (24);

case 'j': /* Always adjust left margin only. */

return(0);

case 'T': /* Some output device is always defined. */

return(1);

case 'V': /* Fixed vertical resolution. */

return (40);

default:

return (-1);

}

int

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

{

struct roffreg *reg;

int val;

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

val = roff_getregro(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)

{

struct roffreg *reg;

int val;

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

val = roff_getregro(name + 1);

if (-1 != 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(0);

}

static void

roff_freereg(struct roffreg *reg)

{

struct roffreg *old_reg;

while (NULL != reg) {

free(reg->key.p);

old_reg = reg;

reg = reg->next;

free(old_reg);

}

static enum rofferr

roff_nr(ROFF_ARGS)

{

const char *key;

char *key, *val;

char *val;

size_t keysz;

int iv;

char sign;

val = *bufp + pos;

key = val = buf->buf + pos;

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

if (*key == '\0')

return(ROFF_IGN);

if (0 == strcmp(key, "nS")) {

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

r->regs[(int)REG_nS].set = 1;

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

if ((iv = mandoc_strntoi(val, strlen(val), 10)) >= 0)

return(ROFF_IGN);

r->regs[(int)REG_nS].u = (unsigned)iv;

key[keysz] = '\0';

else

r->regs[(int)REG_nS].u = 0u;

}

sign = *val;

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

val++;

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

roff_setreg(r, key, iv, sign);

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_rr(ROFF_ARGS)

{

struct roffreg *reg, **prev;

char *name, *cp;

size_t namesz;

name = cp = buf->buf + pos;

if (*name == '\0')

return(ROFF_IGN);

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

name[namesz] = '\0';

prev = &r->regtab;

while (1) {

reg = *prev;

if (reg == NULL || !strcmp(name, reg->key.p))

break;

prev = &reg->next;

}

if (reg != NULL) {

*prev = reg->next;

free(reg->key.p);

free(reg);

}

return(ROFF_IGN);

}

static enum rofferr

roff_rm(ROFF_ARGS)

{

const char *name;

char *cp;

size_t namesz;

cp = *bufp + pos;

cp = buf->buf + pos;

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

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

name = roff_getname(r, &cp, ln, (int)(cp - *bufp));

name = cp;

if ('\0' != *name)

namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));

roff_setstr(r, name, NULL, 0);

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

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

break;

}

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_it(ROFF_ARGS)

{

Line 1326 roff_it(ROFF_ARGS)

Line 1829 roff_it(ROFF_ARGS)

int iv;

/* Parse the number of lines. */

cp = *bufp + pos;

cp = buf->buf + pos;

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

cp[len] = '\0';

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

mandoc_msg(MANDOCERR_NUMERIC, r->parse,

mandoc_msg(MANDOCERR_IT_NONUM, r->parse,

ln, ppos, *bufp + 1);

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

return(ROFF_IGN);

}

cp += len + 1;

Line 1342 roff_it(ROFF_ARGS)

Line 1845 roff_it(ROFF_ARGS)

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_Dd(ROFF_ARGS)

{

const char *const *cp;

if (MPARSE_MDOC != r->parsetype)

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

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

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

if (r->format == 0)

r->format = MPARSE_MDOC;

return(ROFF_CONT);

}

/* ARGSUSED */

static enum rofferr

roff_TH(ROFF_ARGS)

{

const char *const *cp;

if (MPARSE_MDOC != r->parsetype)

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);

}

/* ARGSUSED */

static enum rofferr

roff_TE(ROFF_ARGS)

{

if (NULL == r->tbl)

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "TE");

else

tbl_end(&r->tbl);

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_T_(ROFF_ARGS)

{

if (NULL == r->tbl)

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "T&");

else

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

return(ROFF_IGN);

}

#if 0

static int

* Handle in-line equation delimiters.

roff_closeeqn(struct roff *r)

static enum rofferr

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

{

char *cp1, *cp2;

const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;

return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0);

}

* Outside equations, look for an opening delimiter.

#endif

* If we are inside an equation, we already know it is

* in-line, or this function wouldn't have been called;

* so look for a closing delimiter.

static void

cp1 = buf->buf + pos;

roff_openeqn(struct roff *r, const char *name, int line,

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

int offs, const char *buf)

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

{

if (cp2 == NULL)

struct eqn_node *e;

return(ROFF_CONT);

int poff;

assert(NULL == r->eqn);

*cp2++ = '\0';

e = eqn_alloc(name, offs, line, r->parse);

bef_pr = bef_nl = aft_nl = aft_pr = "";

if (r->last_eqn)

/* Handle preceding text, protecting whitespace. */

r->last_eqn->next = e;

else

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

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

if (*buf->buf != '\0') {

if (r->eqn == NULL)

bef_pr = "\\&";

bef_nl = "\n";

}

if (buf) {

poff = 0;

* Prepare replacing the delimiter with an equation macro

eqn_read(&r->eqn, line, buf, offs, &poff);

* and drop leading white space from the equation.

if (r->eqn == NULL) {

while (*cp2 == ' ')

cp2++;

mac = ".EQ";

} else

mac = ".EN";

/* Handle following text, protecting whitespace. */

if (*cp2 != '\0') {

aft_nl = "\n";

if (r->eqn != NULL)

aft_pr = "\\&";

}

/* Do the actual replacement. */

buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,

bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;

free(buf->buf);

buf->buf = cp1;

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

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

return(ROFF_REPARSE);

}

/* ARGSUSED */

static enum rofferr

roff_EQ(ROFF_ARGS)

{

struct eqn_node *e;

roff_openeqn(r, *bufp + pos, ln, ppos, NULL);

assert(r->eqn == NULL);

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

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,

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

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_EN(ROFF_ARGS)

{

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

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

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_TS(ROFF_ARGS)

{

struct tbl_node *tbl;

if (r->tbl) {

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

mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,

ln, ppos, "TS breaks TS");

tbl_end(&r->tbl);

}

Line 1466 roff_TS(ROFF_ARGS)

Line 2022 roff_TS(ROFF_ARGS)

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_cc(ROFF_ARGS)

{

const char *p;

p = *bufp + pos;

p = buf->buf + pos;

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

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

r->control = 0;

if ('\0' != *p)

if (*p != '\0')

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

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_tr(ROFF_ARGS)

{

Line 1491 roff_tr(ROFF_ARGS)

Line 2045 roff_tr(ROFF_ARGS)

size_t fsz, ssz;

enum mandoc_esc esc;

p = *bufp + pos;

p = buf->buf + pos;

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

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

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

return(ROFF_IGN);

}

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

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

fsz = ssz = 1;

first = p++;

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

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

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

if (ESCAPE_ERROR == esc) {

if (esc == ESCAPE_ERROR) {

mandoc_msg

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

(MANDOCERR_BADESCAPE, r->parse,

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

ln, (int)(p - *bufp), NULL);

return(ROFF_IGN);

}

fsz = (size_t)(p - first);

}

second = p++;

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

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

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

if (ESCAPE_ERROR == esc) {

if (esc == ESCAPE_ERROR) {

mandoc_msg

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

(MANDOCERR_BADESCAPE, r->parse,

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

ln, (int)(p - *bufp), NULL);

return(ROFF_IGN);

}

ssz = (size_t)(p - second);

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

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

mandoc_msg(MANDOCERR_ARGCOUNT, r->parse,

ln, (int)(p - *bufp), NULL);

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

second = " ";

p--;

}

if (fsz > 1) {

roff_setstrn(&r->xmbtab, first,

roff_setstrn(&r->xmbtab, first, fsz,

fsz, second, ssz, 0);

second, ssz, 0);

continue;

}

if (NULL == r->xtab)

if (r->xtab == NULL)

r->xtab = mandoc_calloc

r->xtab = mandoc_calloc(128,

(128, sizeof(struct roffstr));

sizeof(struct roffstr));

free(r->xtab[(int)*first].p);

r->xtab[(int)*first].p = mandoc_strndup(second, ssz);

Line 1548 roff_tr(ROFF_ARGS)

Line 2100 roff_tr(ROFF_ARGS)

return(ROFF_IGN);

}

/* ARGSUSED */

static enum rofferr

roff_so(ROFF_ARGS)

{

char *name;

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

name = buf->buf + pos;

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

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

Line 1563 roff_so(ROFF_ARGS)

Line 2115 roff_so(ROFF_ARGS)

* or using absolute paths.

name = *bufp + pos;

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

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

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

mandoc_msg(MANDOCERR_SOPATH, r->parse, ln, pos, NULL);

".so %s", name);

return(ROFF_ERR);

}

Line 1573 roff_so(ROFF_ARGS)

Line 2125 roff_so(ROFF_ARGS)

return(ROFF_SO);

}

/* ARGSUSED */

static enum rofferr

roff_userdef(ROFF_ARGS)

{

Line 1583 roff_userdef(ROFF_ARGS)

Line 2134 roff_userdef(ROFF_ARGS)

* Collect pointers to macro argument strings

* and null-terminate them.

* and NUL-terminate them.

cp = *bufp + pos;

cp = buf->buf + pos;

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

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

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

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

* Expand macro arguments.

*szp = 0;

buf->sz = 0;

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

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

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

i = cp[2] - '1';

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

/* Not an argument invocation. */

cp += 2;

continue;

}

*cp = '\0';

*szp = strlen(n1) - 3 + strlen(arg[i]) + 1;

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

n2 = mandoc_malloc(*szp);

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

strlcpy(n2, n1, (size_t)(cp - n1 + 1));

strlcat(n2, arg[i], *szp);

strlcat(n2, cp + 3, *szp);

cp = n2 + (cp - n1);

free(n1);

n1 = n2;

Line 1619 roff_userdef(ROFF_ARGS)

Line 2165 roff_userdef(ROFF_ARGS)

* Replace the macro invocation

* by the expanded macro.

free(*bufp);

free(buf->buf);

*bufp = n1;

buf->buf = n1;

if (0 == *szp)

if (buf->sz == 0)

*szp = strlen(*bufp) + 1;

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

return(*szp > 1 && '\n' == (*bufp)[(int)*szp - 2] ?

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

ROFF_REPARSE : ROFF_APPEND);

}

static char *

static size_t

roff_getname(struct roff *r, char **cpp, int ln, int pos)

{

char *name, *cp;

size_t namesz;

name = *cpp;

if ('\0' == *name)

return(name);

return(0);

/* Read until end of name. */

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

for (cp = name; '\0' != *cp && ' ' != *cp; cp++) {

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

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

namesz = cp - name;

break;

}

if ('\\' != *cp)

continue;

namesz = cp - name;

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

break;

cp++;

if ('\\' == *cp)

continue;

mandoc_msg(MANDOCERR_NAMESC, r->parse, ln, pos, NULL);

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

*cp = '\0';

"%.*s", (int)(cp - name + 1), name);

name = cp;

mandoc_escape((const char **)&cp, NULL, NULL);

break;

}

/* Nil-terminate name. */

if ('\0' != *cp)

*(cp++) = '\0';

/* Read past spaces. */

while (' ' == *cp)

cp++;

*cpp = cp;

return(name);

return(namesz);

}

* Store *string into the user-defined string called *name.

* In multiline mode, append to an existing entry and append '\n';

* else replace the existing entry, if there is one.

* To clear an existing entry, call with (*r, *name, NULL, 0).

* append == 0: replace mode

* append == 1: single-line append mode

* append == 2: multiline append mode, append '\n' after each call

static void

roff_setstr(struct roff *r, const char *name, const char *string,

int multiline)

int append)

{

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

string ? strlen(string) : 0, multiline);

string ? strlen(string) : 0, append);

}

static void

roff_setstrn(struct roffkv **r, const char *name, size_t namesz,

const char *string, size_t stringsz, int multiline)

const char *string, size_t stringsz, int append)

{

struct roffkv *n;

char *c;

Line 1688 roff_setstrn(struct roffkv **r, const char *name, size

Line 2240 roff_setstrn(struct roffkv **r, const char *name, size

/* Search for an existing string with the same name. */

n = *r;

while (n && strcmp(name, n->key.p))

while (n && (namesz != n->key.sz ||

strncmp(n->key.p, name, namesz)))

n = n->next;

if (NULL == n) {

Line 1700 roff_setstrn(struct roffkv **r, const char *name, size

Line 2253 roff_setstrn(struct roffkv **r, const char *name, size

n->val.sz = 0;

n->next = *r;

*r = n;

} else if (0 == multiline) {

} else if (0 == append) {

/* In multiline mode, append; else replace. */

free(n->val.p);

n->val.p = NULL;

n->val.sz = 0;

Line 1714 roff_setstrn(struct roffkv **r, const char *name, size

Line 2266 roff_setstrn(struct roffkv **r, const char *name, size

* One additional byte for the '\n' in multiline mode,

* and one for the terminating '\0'.

newch = stringsz + (multiline ? 2u : 1u);

newch = stringsz + (1 < append ? 2u : 1u);

if (NULL == n->val.p) {

n->val.p = mandoc_malloc(newch);

Line 1741 roff_setstrn(struct roffkv **r, const char *name, size

Line 2293 roff_setstrn(struct roffkv **r, const char *name, size

}

/* Append terminating bytes. */

if (multiline)

if (1 < append)

*c++ = '\n';

*c = '\0';

Line 1752 static const char *

Line 2304 static const char *

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

{

const struct roffkv *n;

int i;

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);

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(NULL);

}

Line 1777 roff_freestr(struct roffkv *r)

Line 2335 roff_freestr(struct roffkv *r)

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);

}

Line 1843 roff_strdup(const struct roff *r, const char *p)

Line 2401 roff_strdup(const struct roff *r, const char *p)

* Append the match to the array and move

* forward by its keysize.

res = mandoc_realloc

res = mandoc_realloc(res,

(res, ssz + cp->val.sz + 1);

ssz + cp->val.sz + 1);

memcpy(res + ssz, cp->val.p, cp->val.sz);

ssz += cp->val.sz;

p += (int)cp->key.sz;

Line 1865 roff_strdup(const struct roff *r, const char *p)

Line 2423 roff_strdup(const struct roff *r, const char *p)

memcpy(res + ssz, pp, sz);

break;

}

* We bail out on bad escapes.

* No need to warn: we already did so when

* roff_res() was called.

Line 1880 roff_strdup(const struct roff *r, const char *p)

Line 2438 roff_strdup(const struct roff *r, const char *p)

return(res);

}

int

roff_getformat(const struct roff *r)

{

return(r->format);

}

* Find out whether a line is a macro line or not.

* If it is, adjust the current position and return one; if it isn't,

* return zero and don't change the current position.

* If the control character has been set with `.cc', then let that grain

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