mandoc/roff.c - diff

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Up to [cvsweb.bsd.lv] / mandoc

Diff for /mandoc/roff.c between version 1.326 and 1.348

version 1.326, 2018/04/09 22:27:04

version 1.348, 2018/12/13 05:23:38

Line 28

#include <stdlib.h>

#include <string.h>

#include "mandoc.h"

#include "mandoc_aux.h"

#include "mandoc_ohash.h"

#include "mandoc.h"

#include "roff.h"

#include "libmandoc.h"

#include "roff_int.h"

#include "libroff.h"

#include "tbl_parse.h"

#include "eqn_parse.h"

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

#define EXPAND_LIMIT 1000

Line 73 struct roffkv {

Line 74 struct roffkv {

struct roffreg {

struct roffstr key;

int val;

int step;

struct roffreg *next;

};

Line 84 struct roffreq {

Line 86 struct roffreq {

char name[];

};

* A macro processing context.

* More than one is needed when macro calls are nested.

struct mctx {

char **argv;

int argc;

int argsz;

};

struct roff {

struct mparse *parse; /* parse point */

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

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

struct mctx *mstack; /* stack of macro contexts */

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

struct ohash *reqtab; /* request lookup table */

struct roffreg *regtab; /* number registers */

Line 103 struct roff {

Line 116 struct roff {

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

int eqn_inline; /* current equation is inline */

int options; /* parse options */

int mstacksz; /* current size of mstack */

int mstackpos; /* position in mstack */

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

int rstackpos; /* position in rstack */

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

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

char control; /* control character */

char escape; /* escape character */

};

Line 130 struct roffnode {

Line 144 struct roffnode {

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

int *offs /* reset offset of buffer data */

typedef enum rofferr (*roffproc)(ROFF_ARGS);

typedef int (*roffproc)(ROFF_ARGS);

struct roffmac {

roffproc proc; /* process new macro */

Line 150 struct predef {

Line 164 struct predef {

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

static void roffnode_cleanscope(struct roff *);

static int roffnode_cleanscope(struct roff *);

static void roffnode_pop(struct roff *);

static int roffnode_pop(struct roff *);

static void roffnode_push(struct roff *, enum roff_tok,

const char *, int, int);

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

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

static enum rofferr roff_als(ROFF_ARGS);

static int roff_als(ROFF_ARGS);

static enum rofferr roff_block(ROFF_ARGS);

static int roff_block(ROFF_ARGS);

static enum rofferr roff_block_text(ROFF_ARGS);

static int roff_block_text(ROFF_ARGS);

static enum rofferr roff_block_sub(ROFF_ARGS);

static int roff_block_sub(ROFF_ARGS);

static enum rofferr roff_br(ROFF_ARGS);

static int roff_br(ROFF_ARGS);

static enum rofferr roff_cblock(ROFF_ARGS);

static int roff_cblock(ROFF_ARGS);

static enum rofferr roff_cc(ROFF_ARGS);

static int roff_cc(ROFF_ARGS);

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

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

static enum rofferr roff_cond(ROFF_ARGS);

static int roff_char(ROFF_ARGS);

static enum rofferr roff_cond_text(ROFF_ARGS);

static int roff_cond(ROFF_ARGS);

static enum rofferr roff_cond_sub(ROFF_ARGS);

static int roff_cond_text(ROFF_ARGS);

static enum rofferr roff_ds(ROFF_ARGS);

static int roff_cond_sub(ROFF_ARGS);

static enum rofferr roff_ec(ROFF_ARGS);

static int roff_ds(ROFF_ARGS);

static enum rofferr roff_eo(ROFF_ARGS);

static int roff_ec(ROFF_ARGS);

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

static int roff_eo(ROFF_ARGS);

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

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

static int roff_evalnum(struct roff *, int,

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

Line 182 static void roff_freestr(struct roffkv *);

Line 197 static void roff_freestr(struct roffkv *);

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

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

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

static int roff_getregn(struct roff *, const char *, size_t);

static int roff_getregn(struct roff *,

const char *, size_t, char);

static int roff_getregro(const struct roff *,

const char *name);

static const char *roff_getstrn(struct roff *,

const char *, size_t, int *);

static int roff_hasregn(const struct roff *,

const char *, size_t);

static enum rofferr roff_insec(ROFF_ARGS);

static int roff_insec(ROFF_ARGS);

static enum rofferr roff_it(ROFF_ARGS);

static int roff_it(ROFF_ARGS);

static enum rofferr roff_line_ignore(ROFF_ARGS);

static int roff_line_ignore(ROFF_ARGS);

static void roff_man_alloc1(struct roff_man *);

static void roff_man_free1(struct roff_man *);

static enum rofferr roff_manyarg(ROFF_ARGS);

static int roff_manyarg(ROFF_ARGS);

static enum rofferr roff_nr(ROFF_ARGS);

static int roff_nop(ROFF_ARGS);

static enum rofferr roff_onearg(ROFF_ARGS);

static int roff_nr(ROFF_ARGS);

static int roff_onearg(ROFF_ARGS);

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

int, int);

static enum rofferr roff_parsetext(struct roff *, struct buf *,

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

int, int *);

static enum rofferr roff_renamed(ROFF_ARGS);

static int roff_renamed(ROFF_ARGS);

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

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

static enum rofferr roff_rm(ROFF_ARGS);

static int roff_return(ROFF_ARGS);

static enum rofferr roff_rn(ROFF_ARGS);

static int roff_rm(ROFF_ARGS);

static enum rofferr roff_rr(ROFF_ARGS);

static int roff_rn(ROFF_ARGS);

static int roff_rr(ROFF_ARGS);

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

size_t, int, char);

size_t, int, char, int);

static void roff_setstr(struct roff *,

const char *, const char *, int);

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

size_t, const char *, size_t, int);

static enum rofferr roff_so(ROFF_ARGS);

static int roff_shift(ROFF_ARGS);

static enum rofferr roff_tr(ROFF_ARGS);

static int roff_so(ROFF_ARGS);

static enum rofferr roff_Dd(ROFF_ARGS);

static int roff_tr(ROFF_ARGS);

static enum rofferr roff_TE(ROFF_ARGS);

static int roff_Dd(ROFF_ARGS);

static enum rofferr roff_TS(ROFF_ARGS);

static int roff_TE(ROFF_ARGS);

static enum rofferr roff_EQ(ROFF_ARGS);

static int roff_TS(ROFF_ARGS);

static enum rofferr roff_EN(ROFF_ARGS);

static int roff_EQ(ROFF_ARGS);

static enum rofferr roff_T_(ROFF_ARGS);

static int roff_EN(ROFF_ARGS);

static enum rofferr roff_unsupp(ROFF_ARGS);

static int roff_T_(ROFF_ARGS);

static enum rofferr roff_userdef(ROFF_ARGS);

static int roff_unsupp(ROFF_ARGS);

static int roff_userdef(ROFF_ARGS);

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

Line 324 const char *__roff_name[MAN_MAX + 1] = {

Line 343 const char *__roff_name[MAN_MAX + 1] = {

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

NULL,

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

"TQ",

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

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

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

Line 331 const char *__roff_name[MAN_MAX + 1] = {

Line 351 const char *__roff_name[MAN_MAX + 1] = {

"nf", "fi",

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

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

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

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

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

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

};

const char *const *roff_name = __roff_name;

Line 378 static struct roffmac roffs[TOKEN_NONE] = {

Line 399 static struct roffmac roffs[TOKEN_NONE] = {

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

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

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

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

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

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

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

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

Line 488 static struct roffmac roffs[TOKEN_NONE] = {

Line 509 static struct roffmac roffs[TOKEN_NONE] = {

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

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

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

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

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

{ roff_nr, NULL, NULL, 0 }, /* nr */

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

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

Line 517 static struct roffmac roffs[TOKEN_NONE] = {

Line 538 static struct roffmac roffs[TOKEN_NONE] = {

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

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

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

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

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

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

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

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

Line 529 static struct roffmac roffs[TOKEN_NONE] = {

Line 550 static struct roffmac roffs[TOKEN_NONE] = {

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

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

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

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

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

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

{ roff_so, NULL, NULL, 0 }, /* so */

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

Line 571 static struct roffmac roffs[TOKEN_NONE] = {

Line 592 static struct roffmac roffs[TOKEN_NONE] = {

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

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

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

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

{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/

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

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

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

Line 655 roffhash_find(struct ohash *htab, const char *name, si

Line 676 roffhash_find(struct ohash *htab, const char *name, si

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

* pending.

static void

static int

roffnode_pop(struct roff *r)

{

struct roffnode *p;

int inloop;

assert(r->last);

p = r->last;

inloop = p->tok == ROFF_while;

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

r->last = p->parent;

free(p->name);

free(p->end);

free(p);

return inloop;

}

Line 696 roffnode_push(struct roff *r, enum roff_tok tok, const

Line 718 roffnode_push(struct roff *r, enum roff_tok tok, const

static void

roff_free1(struct roff *r)

{

struct tbl_node *tbl;

int i;

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

tbl_free(r->first_tbl);

r->first_tbl = tbl->next;

tbl_free(tbl);

}

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

if (r->last_eqn != NULL)

eqn_free(r->last_eqn);

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

while (r->mstackpos >= 0)

roff_userret(r);

while (r->last)

roffnode_pop(r);

Line 748 roff_reset(struct roff *r)

Line 768 roff_reset(struct roff *r)

void

roff_free(struct roff *r)

{

int i;

roff_free1(r);

for (i = 0; i < r->mstacksz; i++)

free(r->mstack[i].argv);

free(r->mstack);

roffhash_free(r->reqtab);

free(r);

}

Line 760 roff_alloc(struct mparse *parse, int options)

Line 785 roff_alloc(struct mparse *parse, int options)

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

r->parse = parse;

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

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

r->options = options;

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

r->mstackpos = -1;

r->rstackpos = -1;

r->escape = '\\';

return r;

Line 983 roff_body_alloc(struct roff_man *man, int line, int po

Line 1009 roff_body_alloc(struct roff_man *man, int line, int po

}

static void

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

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

{

struct roff_node *n;

const struct tbl_span *span;

struct tbl_span *span;

if (man->macroset == MACROSET_MAN)

man_breakscope(man, ROFF_TS);

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

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

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

n->span = span;

roff_node_append(man, n);

n->flags |= NODE_VALID | NODE_ENDED;

Line 1037 roff_node_unlink(struct roff_man *man, struct roff_nod

Line 1063 roff_node_unlink(struct roff_man *man, struct roff_nod

}

void

roff_node_relink(struct roff_man *man, struct roff_node *n)

{

roff_node_unlink(man, n);

n->prev = n->next = NULL;

roff_node_append(man, n);

}

void

roff_node_free(struct roff_node *n)

{

Line 1044 roff_node_free(struct roff_node *n)

Line 1078 roff_node_free(struct roff_node *n)

mdoc_argv_free(n->args);

if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)

free(n->norm);

if (n->eqn != NULL)

eqn_box_free(n->eqn);

free(n->string);

free(n);

}

Line 1116 deroff(char **dest, const struct roff_node *n)

Line 1149 deroff(char **dest, const struct roff_node *n)

* used in numerical expressions and conditional requests.

* Also check the syntax of the remaining escape sequences.

static enum rofferr

static int

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

{

struct mctx *ctx; /* current macro call context */

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

struct roff_node *n; /* used for header comments */

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

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

char *ep; /* end of comment string */

const char *stnam; /* start of the name, after "[(*" */

const char *cp; /* end of the name, e.g. before ']' */

const char *res; /* the string to be substituted */

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

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

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

size_t asz; /* length of the replacement */

size_t rsz; /* length of the rest of the string */

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 */

int quote_args; /* true for \\$@, false for \\$* */

int done; /* no more input available */

int deftype; /* type of definition to paste */

int rcsid; /* kind of RCS id seen */

char sign; /* increment number register */

char term; /* character terminating the escape */

/* Search forward for comments. */

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

Line 1210 roff_res(struct roff *r, struct buf *buf, int ln, int

/* Handle trailing whitespace. */

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

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

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

if (*ep == '\n') {

done = 1;

cp--;

ep--;

}

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

if (*ep == ' ' || *ep == '\t')

mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,

ln, cp - buf->buf, NULL);

ln, ep - buf->buf, NULL);

while (stesc > start && stesc[-1] == ' ')

* Save comments preceding the title macro

* in the syntax tree.

if (r->format == 0) {

while (*ep == ' ' || *ep == '\t')

ep--;

ep[1] = '\0';

n = roff_node_alloc(r->man,

ln, stesc + 1 - buf->buf,

ROFFT_COMMENT, TOKEN_NONE);

n->string = mandoc_strdup(stesc + 2);

roff_node_append(r->man, n);

n->flags |= NODE_VALID | NODE_ENDED;

r->man->next = ROFF_NEXT_SIBLING;

}

/* Line continuation with comment. */

if (stesc[1] == '#') {

*stesc = '\0';

return ROFF_IGN | ROFF_APPEND;

}

/* Discard normal comments. */

while (stesc > start && stesc[-1] == ' ' &&

(stesc == start + 1 || stesc[-2] != '\\'))

stesc--;

*stesc = '\0';

break;

Line 1230 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1299 roff_res(struct roff *r, struct buf *buf, int ln, int

if (done)

continue;

else

return ROFF_APPEND;

return ROFF_IGN | ROFF_APPEND;

}

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

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

Line 1308 roff_res(struct roff *r, struct buf *buf, int ln, int

cp = stesc + 1;

switch (*cp) {

case '*':

case '$':

res = NULL;

break;

case 'B':

Line 1246 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1316 roff_res(struct roff *r, struct buf *buf, int ln, int

term = cp[1];

/* FALLTHROUGH */

case 'n':

sign = cp[1];

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

cp++;

res = ubuf;

break;

default:

Line 1337 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1410 roff_res(struct roff *r, struct buf *buf, int ln, int

if (arg_complete) {

deftype = ROFFDEF_USER | ROFFDEF_PRE;

res = roff_getstrn(r, stnam, naml, &deftype);

* If not overriden, let \*(.T

* through to the formatters.

if (res == NULL && naml == 2 &&

stnam[0] == '.' && stnam[1] == 'T') {

roff_setstrn(&r->strtab,

".T", 2, NULL, 0, 0);

stesc--;

continue;

}

break;

case '$':

if (r->mstackpos < 0) {

mandoc_vmsg(MANDOCERR_ARG_UNDEF,

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

"%.3s", stesc);

break;

}

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

npos = stesc[2] - '1';

if (npos >= 0 && npos <= 8) {

res = npos < ctx->argc ?

ctx->argv[npos] : "";

break;

}

if (stesc[2] == '*')

quote_args = 0;

else if (stesc[2] == '@')

quote_args = 1;

else {

mandoc_vmsg(MANDOCERR_ARG_NONUM,

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

"%.3s", stesc);

break;

}

asz = 0;

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

if (npos)

asz++; /* blank */

if (quote_args)

asz += 2; /* quotes */

asz += strlen(ctx->argv[npos]);

}

if (asz != 3) {

rsz = buf->sz - (stesc - buf->buf) - 3;

if (asz < 3)

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

buf->sz += asz - 3;

nbuf = mandoc_realloc(buf->buf, buf->sz);

start = nbuf + pos;

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

buf->buf = nbuf;

if (asz > 3)

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

}

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

if (npos)

*stesc++ = ' ';

if (quote_args)

*stesc++ = '"';

cp = ctx->argv[npos];

while (*cp != '\0')

*stesc++ = *cp++;

if (quote_args)

*stesc++ = '"';

}

continue;

case 'B':

npos = 0;

ubuf[0] = arg_complete &&

Line 1350 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1492 roff_res(struct roff *r, struct buf *buf, int ln, int

case 'n':

if (arg_complete)

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

roff_getregn(r, stnam, naml));

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

else

ubuf[0] = '\0';

break;

Line 1362 roff_res(struct roff *r, struct buf *buf, int ln, int

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

}

if (res == NULL) {

mandoc_vmsg(MANDOCERR_STR_UNDEF,

if (stesc[1] == '*')

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

mandoc_vmsg(MANDOCERR_STR_UNDEF,

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

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

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

res = "";

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

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

Line 1391 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1534 roff_res(struct roff *r, struct buf *buf, int ln, int

* Process text streams.

static enum rofferr

static int

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

{

size_t sz;

Line 1457 roff_parsetext(struct roff *r, struct buf *buf, int po

Line 1600 roff_parsetext(struct roff *r, struct buf *buf, int po

return ROFF_CONT;

}

enum rofferr

int

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

{

enum roff_tok t;

enum rofferr e;

int e;

int pos; /* parse point */

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

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

Line 1483 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1626 roff_parseln(struct roff *r, int ln, struct buf *buf,

/* Expand some escape sequences. */

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

if (e == ROFF_IGN || e == ROFF_APPEND)

if ((e & ROFF_MASK) == ROFF_IGN)

return e;

assert(e == ROFF_CONT);

Line 1500 roff_parseln(struct roff *r, int ln, struct buf *buf,

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

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

t = r->last->tok;

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

if (e == ROFF_IGN)

if ((e & ROFF_MASK) == ROFF_IGN)

return e;

assert(e == ROFF_CONT);

e &= ~ROFF_MASK;

}

} else

e = ROFF_IGN;

if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {

eqn_read(r->eqn, buf->buf + ppos);

return ROFF_IGN;

return e;

}

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

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

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

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

return ROFF_IGN;

return e;

}

if ( ! ctl)

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

return roff_parsetext(r, buf, pos, offs) | e;

/* Skip empty request lines. */

Line 1554 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1698 roff_parseln(struct roff *r, int ln, struct buf *buf,

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

pos++;

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

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

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

return ROFF_IGN;

}

Line 1582 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1726 roff_parseln(struct roff *r, int ln, struct buf *buf,

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

}

* Internal interface function to tell the roff parser that execution

* of the current macro ended. This is required because macro

* definitions usually do not end with a .return request.

void

roff_userret(struct roff *r)

{

struct mctx *ctx;

int i;

assert(r->mstackpos >= 0);

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

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

free(ctx->argv[i]);

ctx->argc = 0;

r->mstackpos--;

}

void

roff_endparse(struct roff *r)

{

if (r->last != NULL)

Line 1598 roff_endparse(struct roff *r)

Line 1761 roff_endparse(struct roff *r)

}

if (r->tbl != NULL) {

mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,

tbl_end(r->tbl, 1);

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

tbl_end(r->tbl);

r->tbl = NULL;

}

Line 1651 roff_parse(struct roff *r, char *buf, int *pos, int ln

Line 1812 roff_parse(struct roff *r, char *buf, int *pos, int ln

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

static enum rofferr

static int

roff_cblock(ROFF_ARGS)

{

Line 1691 roff_cblock(ROFF_ARGS)

Line 1852 roff_cblock(ROFF_ARGS)

}

static void

static int

roffnode_cleanscope(struct roff *r)

{

int inloop;

while (r->last) {

inloop = 0;

while (r->last != NULL) {

if (--r->last->endspan != 0)

break;

roffnode_pop(r);

inloop += roffnode_pop(r);

}

return inloop;

}

static void

static int

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

{

if (NULL == r->last) {

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "\\}");

return;

return 0;

}

switch (r->last->tok) {

case ROFF_el:

case ROFF_ie:

case ROFF_if:

case ROFF_while:

break;

default:

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "\\}");

return;

return 0;

}

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

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "\\}");

return;

return 0;

}

roffnode_pop(r);

return roffnode_pop(r) + roffnode_cleanscope(r);

roffnode_cleanscope(r);

return;

}

static enum rofferr

static int

roff_block(ROFF_ARGS)

{

const char *name, *value;

Line 1859 roff_block(ROFF_ARGS)

Line 2021 roff_block(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_block_sub(ROFF_ARGS)

{

enum roff_tok t;

Line 1913 roff_block_sub(ROFF_ARGS)

Line 2075 roff_block_sub(ROFF_ARGS)

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

}

static enum rofferr

static int

roff_block_text(ROFF_ARGS)

{

Line 1923 roff_block_text(ROFF_ARGS)

Line 2085 roff_block_text(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_cond_sub(ROFF_ARGS)

{

enum roff_tok t;

char *ep;

int rr;

int endloop, irc, rr;

enum roff_tok t;

irc = ROFF_IGN;

rr = r->last->rule;

roffnode_cleanscope(r);

endloop = tok != ROFF_while ? ROFF_IGN :

rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;

if (roffnode_cleanscope(r))

irc |= endloop;

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

Line 1942 roff_cond_sub(ROFF_ARGS)

Line 2108 roff_cond_sub(ROFF_ARGS)

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

rr = 0;

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

* The closing delimiter `\}' rewinds the conditional scope

* but is otherwise ignored when interpreting the line.

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

switch (ep[1]) {

case '}':

memmove(ep, ep + 2, strlen(ep + 2) + 1);

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

if (roff_ccond(r, ln, ep - buf->buf))

irc |= endloop;

break;

case '\0':

++ep;

Line 1965 roff_cond_sub(ROFF_ARGS)

Line 2135 roff_cond_sub(ROFF_ARGS)

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

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

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

? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr

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

? ROFF_CONT : ROFF_IGN;

rr ? ROFF_CONT : ROFF_IGN;

return irc;

}

static enum rofferr

static int

roff_cond_text(ROFF_ARGS)

{

char *ep;

int rr;

int endloop, irc, rr;

irc = ROFF_IGN;

rr = r->last->rule;

roffnode_cleanscope(r);

endloop = tok != ROFF_while ? ROFF_IGN :

rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;

if (roffnode_cleanscope(r))

irc |= endloop;

* If `\}' occurs on a text line with neither preceding

* nor following characters, drop the line completely.

ep = buf->buf + pos;

if (strcmp(ep, "\\}") == 0)

rr = 0;

* The closing delimiter `\}' rewinds the conditional scope

* but is otherwise ignored when interpreting the line.

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

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

switch (ep[1]) {

*ep = '&';

case '}':

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

memmove(ep, ep + 2, strlen(ep + 2) + 1);

}

if (roff_ccond(r, ln, ep - buf->buf))

if (*ep != '\0')

irc |= endloop;

break;

case '\0':

++ep;

break;

default:

ep += 2;

break;

}

return rr ? ROFF_CONT : ROFF_IGN;

if (rr)

irc |= ROFF_CONT;

return irc;

}

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

Line 2115 out:

Line 2312 out:

static int

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

{

char *cp, *name;

const char *start, *end;

size_t sz;

char *cp, *name;

int deftype, number, savepos, istrue, wanttrue;

size_t sz;

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

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

wanttrue = 0;

Line 2132 roff_evalcond(struct roff *r, int ln, char *v, int *po

Line 2330 roff_evalcond(struct roff *r, int ln, char *v, int *po

case 'o':

(*pos)++;

return wanttrue;

case 'c':

case 'e':

case 't':

case 'v':

(*pos)++;

return !wanttrue;

case 'c':

do {

(*pos)++;

} while (v[*pos] == ' ');

* Quirk for groff compatibility:

* The horizontal tab is neither available nor unavailable.

if (v[*pos] == '\t') {

(*pos)++;

return 0;

}

/* Printable ASCII characters are available. */

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

(*pos)++;

return wanttrue;

}

end = v + ++*pos;

switch (mandoc_escape(&end, &start, &len)) {

case ESCAPE_SPECIAL:

istrue = mchars_spec2cp(start, len) != -1;

break;

case ESCAPE_UNICODE:

istrue = 1;

break;

case ESCAPE_NUMBERED:

istrue = mchars_num2char(start, len) != -1;

break;

default:

istrue = !wanttrue;

break;

}

*pos = end - v;

return istrue == wanttrue;

case 'd':

case 'r':

cp = v + *pos + 1;

Line 2169 roff_evalcond(struct roff *r, int ln, char *v, int *po

Line 2405 roff_evalcond(struct roff *r, int ln, char *v, int *po

return 0;

}

static enum rofferr

static int

roff_line_ignore(ROFF_ARGS)

{

return ROFF_IGN;

}

static enum rofferr

static int

roff_insec(ROFF_ARGS)

{

Line 2185 roff_insec(ROFF_ARGS)

Line 2421 roff_insec(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_unsupp(ROFF_ARGS)

{

Line 2194 roff_unsupp(ROFF_ARGS)

Line 2430 roff_unsupp(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_cond(ROFF_ARGS)

{

int irc;

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

Line 2235 roff_cond(ROFF_ARGS)

Line 2472 roff_cond(ROFF_ARGS)

* Determine scope.

* If there is nothing on the line after the conditional,

* not even whitespace, use next-line scope.

* Except that .while does not support next-line scope.

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

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

r->last->endspan = 2;

goto out;

}

Line 2269 roff_cond(ROFF_ARGS)

Line 2507 roff_cond(ROFF_ARGS)

out:

*offs = pos;

return ROFF_RERUN;

irc = ROFF_RERUN;

if (tok == ROFF_while)

irc |= ROFF_WHILE;

return irc;

}

static enum rofferr

static int

roff_ds(ROFF_ARGS)

{

char *string;

Line 2522 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2763 roff_evalnum(struct roff *r, int ln, const char *v,

void

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

{

roff_setregn(r, name, strlen(name), val, sign);

roff_setregn(r, name, strlen(name), val, sign, INT_MIN);

}

static void

roff_setregn(struct roff *r, const char *name, size_t len,

int val, char sign)

int val, char sign, int step)

{

struct roffreg *reg;

Line 2544 roff_setregn(struct roff *r, const char *name, size_t

Line 2785 roff_setregn(struct roff *r, const char *name, size_t

reg->key.p = mandoc_strndup(name, len);

reg->key.sz = len;

reg->val = 0;

reg->step = 0;

reg->next = r->regtab;

r->regtab = reg;

}

Line 2554 roff_setregn(struct roff *r, const char *name, size_t

Line 2796 roff_setregn(struct roff *r, const char *name, size_t

reg->val -= val;

else

reg->val = val;

if (step != INT_MIN)

reg->step = step;

}

Line 2568 roff_getregro(const struct roff *r, const char *name)

Line 2812 roff_getregro(const struct roff *r, const char *name)

switch (*name) {

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

return r->argc;

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

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

return 0;

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

Line 2589 roff_getregro(const struct roff *r, const char *name)

Line 2833 roff_getregro(const struct roff *r, const char *name)

int

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

{

return roff_getregn(r, name, strlen(name));

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

}

static int

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

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

{

struct roffreg *reg;

int val;

Line 2604 roff_getregn(struct roff *r, const char *name, size_t

Line 2848 roff_getregn(struct roff *r, const char *name, size_t

return val;

}

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

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

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

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

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

switch (sign) {

case '+':

reg->val += reg->step;

break;

case '-':

reg->val -= reg->step;

break;

default:

break;

}

return reg->val;

}

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

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

return 0;

}

Line 2646 roff_freereg(struct roffreg *reg)

Line 2902 roff_freereg(struct roffreg *reg)

}

static enum rofferr

static int

roff_nr(ROFF_ARGS)

{

char *key, *val;

char *key, *val, *step;

size_t keysz;

int iv;

int iv, is, len;

char sign;

key = val = buf->buf + pos;

Line 2666 roff_nr(ROFF_ARGS)

Line 2922 roff_nr(ROFF_ARGS)

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

val++;

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

len = 0;

roff_setregn(r, key, keysz, iv, sign);

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

return ROFF_IGN;

step = val + len;

while (isspace((unsigned char)*step))

step++;

if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)

is = INT_MIN;

roff_setregn(r, key, keysz, iv, sign, is);

return ROFF_IGN;

}

static enum rofferr

static int

roff_rr(ROFF_ARGS)

{

struct roffreg *reg, **prev;

Line 2702 roff_rr(ROFF_ARGS)

Line 2966 roff_rr(ROFF_ARGS)

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

static enum rofferr

static int

roff_rm(ROFF_ARGS)

{

const char *name;

Line 2721 roff_rm(ROFF_ARGS)

Line 2985 roff_rm(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_it(ROFF_ARGS)

{

int iv;

Line 2750 roff_it(ROFF_ARGS)

Line 3014 roff_it(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_Dd(ROFF_ARGS)

{

int mask;

Line 2780 roff_Dd(ROFF_ARGS)

Line 3044 roff_Dd(ROFF_ARGS)

return ROFF_CONT;

}

static enum rofferr

static int

roff_TE(ROFF_ARGS)

{

if (r->tbl == NULL) {

Line 2788 roff_TE(ROFF_ARGS)

Line 3052 roff_TE(ROFF_ARGS)

ln, ppos, "TE");

return ROFF_IGN;

}

if (tbl_end(r->tbl) == 0) {

if (tbl_end(r->tbl, 0) == 0) {

r->tbl = NULL;

free(buf->buf);

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

buf->sz = 4;

*offs = 0;

return ROFF_REPARSE;

}

r->tbl = NULL;

return ROFF_IGN;

}

static enum rofferr

static int

roff_T_(ROFF_ARGS)

{

Line 2815 roff_T_(ROFF_ARGS)

Line 3080 roff_T_(ROFF_ARGS)

* Handle in-line equation delimiters.

static enum rofferr

static int

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

{

char *cp1, *cp2;

Line 2878 roff_eqndelim(struct roff *r, struct buf *buf, int pos

Line 3143 roff_eqndelim(struct roff *r, struct buf *buf, int pos

return ROFF_REPARSE;

}

static enum rofferr

static int

roff_EQ(ROFF_ARGS)

{

struct roff_node *n;

Line 2888 roff_EQ(ROFF_ARGS)

Line 3153 roff_EQ(ROFF_ARGS)

n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);

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

n->flags |= NODE_LINE;

n->eqn = mandoc_calloc(1, sizeof(*n->eqn));

n->eqn = eqn_box_new();

n->eqn->expectargs = UINT_MAX;

roff_node_append(r->man, n);

r->man->next = ROFF_NEXT_SIBLING;

Line 2908 roff_EQ(ROFF_ARGS)

Line 3172 roff_EQ(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_EN(ROFF_ARGS)

{

if (r->eqn != NULL) {

Line 2922 roff_EN(ROFF_ARGS)

Line 3186 roff_EN(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_TS(ROFF_ARGS)

{

if (r->tbl != NULL) {

mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,

ln, ppos, "TS breaks TS");

tbl_end(r->tbl);

tbl_end(r->tbl, 0);

}

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

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

if (r->last_tbl)

if (r->last_tbl == NULL)

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

else

r->first_tbl = r->tbl;

r->last_tbl = r->tbl;

return ROFF_IGN;

}

static enum rofferr

static int

roff_onearg(ROFF_ARGS)

{

struct roff_node *n;

Line 2999 roff_onearg(ROFF_ARGS)

Line 3261 roff_onearg(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_manyarg(ROFF_ARGS)

{

struct roff_node *n;

Line 3022 roff_manyarg(ROFF_ARGS)

Line 3284 roff_manyarg(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_als(ROFF_ARGS)

{

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

Line 3041 roff_als(ROFF_ARGS)

Line 3303 roff_als(ROFF_ARGS)

if (oldsz == 0)

return ROFF_IGN;

valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",

valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",

(int)oldsz, oldn);

roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);

roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);

Line 3049 roff_als(ROFF_ARGS)

Line 3311 roff_als(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_br(ROFF_ARGS)

{

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

Line 3063 roff_br(ROFF_ARGS)

Line 3325 roff_br(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_cc(ROFF_ARGS)

{

const char *p;

Line 3080 roff_cc(ROFF_ARGS)

Line 3342 roff_cc(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_char(ROFF_ARGS)

{

const char *p, *kp, *vp;

size_t ksz, vsz;

int font;

/* Parse the character to be replaced. */

kp = buf->buf + pos;

p = kp + 1;

if (*kp == '\0' || (*kp == '\\' &&

mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||

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

mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,

ln, pos, "char %s", kp);

return ROFF_IGN;

}

ksz = p - kp;

while (*p == ' ')

p++;

* If the replacement string contains a font escape sequence,

* we have to restore the font at the end.

vp = p;

vsz = strlen(p);

font = 0;

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

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

continue;

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

case ESCAPE_FONT:

case ESCAPE_FONTROMAN:

case ESCAPE_FONTITALIC:

case ESCAPE_FONTBOLD:

case ESCAPE_FONTBI:

case ESCAPE_FONTCW:

case ESCAPE_FONTPREV:

font++;

break;

default:

break;

}

if (font > 1)

mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,

ln, vp - buf->buf, vp);

* Approximate the effect of .char using the .tr tables.

* XXX In groff, .char and .tr interact differently.

if (ksz == 1) {

if (r->xtab == NULL)

r->xtab = mandoc_calloc(128, sizeof(*r->xtab));

assert((unsigned int)*kp < 128);

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

r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,

"%s%s", vp, font ? "\fP" : "");

} else {

roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);

if (font)

roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);

}

return ROFF_IGN;

}

static int

roff_ec(ROFF_ARGS)

{

const char *p;

Line 3097 roff_ec(ROFF_ARGS)

Line 3430 roff_ec(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_eo(ROFF_ARGS)

{

r->escape = '\0';

Line 3107 roff_eo(ROFF_ARGS)

Line 3440 roff_eo(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_nop(ROFF_ARGS)

{

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

pos++;

*offs = pos;

return ROFF_RERUN;

}

static int

roff_tr(ROFF_ARGS)

{

const char *p, *first, *second;

Line 3169 roff_tr(ROFF_ARGS)

Line 3511 roff_tr(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

* Implementation of the .return request.

* There is no need to call roff_userret() from here.

* The read module will call that after rewinding the reader stack

* to the place from where the current macro was called.

static int

roff_return(ROFF_ARGS)

{

if (r->mstackpos >= 0)

return ROFF_IGN | ROFF_USERRET;

mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");

return ROFF_IGN;

}

static int

roff_rn(ROFF_ARGS)

{

const char *value;

Line 3219 roff_rn(ROFF_ARGS)

Line 3577 roff_rn(ROFF_ARGS)

return ROFF_IGN;

}

static enum rofferr

static int

roff_shift(ROFF_ARGS)

{

struct mctx *ctx;

int levels, i;

levels = 1;

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

roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {

mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,

ln, pos, "shift %s", buf->buf + pos);

levels = 1;

}

if (r->mstackpos < 0) {

mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");

return ROFF_IGN;

}

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

if (levels > ctx->argc) {

mandoc_vmsg(MANDOCERR_SHIFT, r->parse,

ln, pos, "%d, but max is %d", levels, ctx->argc);

levels = ctx->argc;

}

if (levels == 0)

return ROFF_IGN;

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

free(ctx->argv[i]);

ctx->argc -= levels;

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

ctx->argv[i] = ctx->argv[i + levels];

return ROFF_IGN;

}

static int

roff_so(ROFF_ARGS)

{

char *name, *cp;

Line 3251 roff_so(ROFF_ARGS)

Line 3642 roff_so(ROFF_ARGS)

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

static enum rofferr

static int

roff_userdef(ROFF_ARGS)

{

const char *arg[16], *ap;

struct mctx *ctx;

char *cp, *n1, *n2;

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

int expand_count, i, ib, ie;

size_t sz;

size_t asz, rsz;

/* Initialize a new macro stack context. */

* Collect pointers to macro argument strings

* and NUL-terminate them.

r->argc = 0;

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

cp = buf->buf + pos;

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

for (i = 0; i < 16; i++) {

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

if (*cp == '\0')

r->mstacksz += 8;

arg[i] = "";

else {

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

r->argc = i + 1;

}

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

ctx->argsz = 0;

ctx->argc = 0;

ctx->argv = NULL;

* Expand macro arguments.

* Collect pointers to macro argument strings,

* NUL-terminating them and escaping quotes.

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

src = buf->buf + pos;

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

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

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

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

expand_count = 0;

ctx->argsz += 8;

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

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

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

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

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

continue;

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

continue;

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

ib = 0;

ie = r->argc - 1;

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

ib = ie = *cp - '1';

if (ib < 0 || ib > 8)

continue;

}

cp -= 2;

arg = mandoc_getarg(r->parse, &src, ln, &pos);

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

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

* Prevent infinite recursion.

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

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

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

if (cp >= n2)

if (*ap == '"') {

expand_count = 1;

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

else if (++expand_count > EXPAND_LIMIT) {

dst += 4;

mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,

} else

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

*dst++ = *ap;

free(buf->buf);

buf->buf = n1;

return ROFF_IGN;

}

*dst = '\0';

* 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 macro definition. */

* Replace the macro invocation

* by the expanded macro.

free(buf->buf);

buf->buf = n1;

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

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

*offs = 0;

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

ROFF_REPARSE : ROFF_APPEND;

ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;

}

* Calling a high-level macro that was renamed with .rn.

* r->current_string has already been set up by roff_parse().

static enum rofferr

static int

roff_renamed(ROFF_ARGS)

{

char *nbuf;

Line 3406 roff_renamed(ROFF_ARGS)

Line 3712 roff_renamed(ROFF_ARGS)

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

free(buf->buf);

buf->buf = nbuf;

*offs = 0;

return ROFF_CONT;

}

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