mandoc/roff.c - diff

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Up to [cvsweb.bsd.lv] / mandoc

Diff for /mandoc/roff.c between version 1.254 and 1.273

version 1.254, 2015/01/23 00:42:00

version 1.273, 2015/08/29 20:26:04

Line 1

/* $Id$ */

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

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. */

Line 37

Line 39

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

#define EXPAND_LIMIT 1000

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

enum rofft {

ROFF_ab,

ROFF_ad,

Line 179 enum rofft {

Line 183 enum rofft {

ROFF_minss,

ROFF_mk,

ROFF_mso,

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

ROFF_na,

ROFF_ne,

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

ROFF_nh,

Line 331 struct roff {

Line 335 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 */

};

Line 373 struct predef {

Line 378 struct predef {

#define PREDEF(__name, __str) \

{ (__name), (__str) },

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

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

static void roffhash_init(void);

static void roffnode_cleanscope(struct roff *);

Line 391 static enum rofferr roff_cond_text(ROFF_ARGS);

Line 398 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 *,

int, int);

Line 435 static enum rofferr roff_T_(ROFF_ARGS);

Line 446 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(). */

static struct roffmac *hash[HASHWIDTH];

static struct roffmac roffs[ROFF_MAX] = {

Line 580 static struct roffmac roffs[ROFF_MAX] = {

Line 596 static struct roffmac roffs[ROFF_MAX] = {

{ "minss", roff_line_ignore, NULL, NULL, 0, NULL },

{ "mk", roff_line_ignore, NULL, NULL, 0, NULL },

{ "mso", roff_insec, NULL, NULL, 0, NULL },

{ "na", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ne", roff_line_ignore, NULL, NULL, 0, NULL },

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

{ "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },

Line 608 static struct roffmac roffs[ROFF_MAX] = {

Line 625 static struct roffmac roffs[ROFF_MAX] = {

{ "po", roff_line_ignore, NULL, NULL, 0, NULL },

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

{ "psbb", roff_unsupp, NULL, NULL, 0, NULL },

{ "pshape", roff_line_ignore, NULL, NULL, 0, NULL },

{ "pshape", roff_unsupp, NULL, NULL, 0, NULL },

{ "pso", roff_insec, NULL, NULL, 0, NULL },

{ "ptr", roff_line_ignore, NULL, NULL, 0, NULL },

{ "pvs", roff_line_ignore, NULL, NULL, 0, NULL },

Line 640 static struct roffmac roffs[ROFF_MAX] = {

Line 657 static struct roffmac roffs[ROFF_MAX] = {

{ "sv", roff_line_ignore, NULL, NULL, 0, NULL },

{ "sy", roff_insec, NULL, NULL, 0, NULL },

{ "T&", roff_T_, NULL, NULL, 0, NULL },

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

{ "ta", roff_unsupp, NULL, NULL, 0, NULL },

{ "tc", roff_unsupp, NULL, NULL, 0, NULL },

{ "TE", roff_TE, NULL, NULL, 0, NULL },

{ "TH", roff_TH, NULL, NULL, 0, NULL },

{ "ti", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ti", roff_unsupp, NULL, NULL, 0, NULL },

{ "tkf", roff_line_ignore, NULL, NULL, 0, NULL },

{ "tl", roff_unsupp, NULL, NULL, 0, NULL },

{ "tm", roff_line_ignore, NULL, NULL, 0, NULL },

Line 727 static int roffit_lines; /* number of lines to delay

Line 744 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 779 roffhash_find(const char *p, size_t s)

Line 798 roffhash_find(const char *p, size_t s)

return(ROFF_MAX);

}

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

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

* pending.

Line 819 roffnode_push(struct roff *r, enum rofft tok, const ch

Line 840 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 894 roff_alloc(struct mparse *parse, const struct mchars *

Line 917 roff_alloc(struct mparse *parse, const struct mchars *

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 |= MDOC_SYNPRETTY;

else

n->flags &= ~MDOC_SYNPRETTY;

if (man->flags & MDOC_NEWLINE)

n->flags |= MDOC_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:

man->last->next = n;

n->prev = man->last;

n->parent = man->last->parent;

break;

case ROFF_NEXT_CHILD:

man->last->child = n;

n->parent = man->last;

break;

default:

abort();

/* NOTREACHED */

}

n->parent->nchild++;

n->parent->last = n;

* Copy over the normalised-data pointer of our parent. Not

* everybody has one, but copying a null pointer is fine.

switch (n->type) {

case ROFFT_BODY:

if (n->end != ENDBODY_NOT)

break;

/* FALLTHROUGH */

case ROFFT_TAIL:

/* FALLTHROUGH */

case ROFFT_HEAD:

n->norm = n->parent->norm;

break;

default:

break;

}

if (man->macroset == MACROSET_MDOC)

mdoc_valid_pre(man, n);

switch (n->type) {

case ROFFT_HEAD:

assert(n->parent->type == ROFFT_BLOCK);

n->parent->head = n;

break;

case ROFFT_BODY:

if (n->end)

break;

assert(n->parent->type == ROFFT_BLOCK);

n->parent->body = n;

break;

case ROFFT_TAIL:

assert(n->parent->type == ROFFT_BLOCK);

n->parent->tail = n;

break;

default:

break;

}

man->last = n;

}

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);

if (man->macroset == MACROSET_MDOC)

mdoc_valid_post(man);

else

man_valid_post(man);

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 |= MDOC_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);

if (man->macroset == MACROSET_MDOC)

mdoc_valid_post(man);

else

man_valid_post(man);

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) {

n->parent->nchild--;

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);

assert(n->nchild == 0);

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 and escape sequences. */

cp = n->string;

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

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

cp++;

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

} else if (isspace((unsigned char)*cp))

cp++;

else

break;

}

/* Skip trailing whitespace. */

for (sz = strlen(cp); 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 1049 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1437 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 1123 roff_parsetext(struct buf *buf, int pos, int *offs)

Line 1512 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 1201 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1592 roff_parseln(struct roff *r, int ln, struct buf *buf,

if (r->eqn != NULL)

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, pos));

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

if ( ! ctl)

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

Line 1236 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1627 roff_parseln(struct roff *r, int ln, struct buf *buf,

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

mandoc_msg(MANDOCERR_TBLMACRO, r->parse,

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

return(ROFF_IGN);

if (t == ROFF_TS)

return(ROFF_IGN);

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

pos++;

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

pos++;

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

}

Line 1304 roff_parse(struct roff *r, char *buf, int *pos, int ln

Line 1701 roff_parse(struct roff *r, char *buf, int *pos, int ln

return(t);

}

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

static enum rofferr

roff_cblock(ROFF_ARGS)

{

Line 1614 roff_cond_text(ROFF_ARGS)

Line 2013 roff_cond_text(ROFF_ARGS)

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 1621 roff_cond_text(ROFF_ARGS)

Line 2022 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 1645 roff_getnum(const char *v, int *pos, int *res)

Line 2050 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);

Line 1731 out:

Line 2137 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 1755 roff_evalcond(struct roff *r, int ln, const char *v, i

Line 2163 roff_evalcond(struct roff *r, int ln, const char *v, i

/* FALLTHROUGH */

case 'e':

/* FALLTHROUGH */

case 'r':

/* FALLTHROUGH */

case 't':

/* FALLTHROUGH */

case 'v':

(*pos)++;

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);

else if (*pos == savepos)

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

Line 1856 roff_cond(ROFF_ARGS)

Line 2267 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 1990 roff_getop(const char *v, int *pos, char *res)

Line 2403 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);

Line 2020 roff_evalpar(struct roff *r, int ln,

Line 2433 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 2030 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2443 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);

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);

if (skipwhite)

if (flags & ROFFNUM_WHITE)

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

(*pos)++;

Line 2126 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2539 roff_evalnum(struct roff *r, int ln, const char *v,

return(1);

}

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

void

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

{

Line 2162 roff_setreg(struct roff *r, const char *name, int val,

Line 2577 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);

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

Line 2190 roff_getreg(const struct roff *r, const char *name)

Line 2607 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);

}

Line 2209 roff_getregn(const struct roff *r, const char *name, s

Line 2626 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);

}

Line 2222 roff_getregn(const struct roff *r, const char *name, s

Line 2639 roff_getregn(const struct roff *r, const char *name, s

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 2256 roff_nr(ROFF_ARGS)

Line 2693 roff_nr(ROFF_ARGS)

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);

Line 2290 roff_rr(ROFF_ARGS)

Line 2727 roff_rr(ROFF_ARGS)

return(ROFF_IGN);

}

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

static enum rofferr

roff_rm(ROFF_ARGS)

{

Line 2311 roff_rm(ROFF_ARGS)

Line 2750 roff_rm(ROFF_ARGS)

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);

}

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 ||

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

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

return(ROFF_IGN);

}

Line 2369 roff_TE(ROFF_ARGS)

Line 2813 roff_TE(ROFF_ARGS)

if (NULL == r->tbl)

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "TE");

else

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

tbl_end(&r->tbl);

free(buf->buf);

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

buf->sz = 4;

return(ROFF_REPARSE);

}

return(ROFF_IGN);

}

Line 2528 roff_cc(ROFF_ARGS)

Line 2975 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);

}

Line 2543 roff_tr(ROFF_ARGS)

Line 2991 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);

}

Line 2571 roff_tr(ROFF_ARGS)

Line 3019 roff_tr(ROFF_ARGS)

}

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 2625 roff_so(ROFF_ARGS)

Line 3073 roff_so(ROFF_ARGS)

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;

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 = cp = mandoc_malloc(buf->sz);

i = cp[2] - '1';

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

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

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

/* Not an argument invocation. */

cp += 2;

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

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

continue;

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

continue;

i = *cp - '1';

if (0 > i || 8 < i)

continue;

cp -= 2;

* Determine the size of the expanded argument,

* taking escaping of quotes into account.

asz = 0;

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

asz++;

if (*ap == '"')

asz += 3;

}

*cp = '\0';

if (asz != 3) {

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

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

cp = n2 + (cp - n1);

* Determine the size of the rest of the

free(n1);

* unexpanded macro, including the NUL.

n1 = n2;

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

if (*ap == '"') {

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

n2 += 4;

} else

*n2++ = *ap;

}

* 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' ?

Line 2832 roff_freestr(struct roffkv *r)

Line 3348 roff_freestr(struct roffkv *r)

free(n);

}

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

const struct tbl_span *

roff_span(const struct roff *r)

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