mandoc/read.c - diff

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Diff for /mandoc/read.c between version 1.42 and 1.136

version 1.42, 2014/01/06 00:53:33

version 1.136, 2015/04/18 17:01:58

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

* copyright notice and this permission notice appear in all copies.

* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES

* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR

* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

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

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

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#ifdef HAVE_MMAP

#include <sys/types.h>

# include <sys/stat.h>

#if HAVE_MMAP

# include <sys/mman.h>

#include <sys/mman.h>

#include <sys/stat.h>

#endif

#include <sys/wait.h>

#include <assert.h>

#include <ctype.h>

#include <errno.h>

#include <fcntl.h>

#include <signal.h>

#include <stdarg.h>

#include <stdint.h>

#include <stdio.h>

Line 36

Line 37

#include <string.h>

#include <unistd.h>

#include "mandoc_aux.h"

#include "mandoc.h"

#include "libmandoc.h"

#include "roff.h"

#include "mdoc.h"

#include "man.h"

#include "main.h"

#include "libmandoc.h"

#define REPARSE_LIMIT 1000

struct buf {

char *buf; /* binary input buffer */

size_t sz; /* size of binary buffer */

};

struct mparse {

struct roff_man *man; /* man parser */

struct roff *roff; /* roff parser (!NULL) */

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

char *sodest; /* filename pointed to by .so */

const char *file; /* filename of current input file */

struct buf *primary; /* buffer currently being parsed */

struct buf *secondary; /* preprocessed copy of input */

const char *defos; /* default operating system */

mandocmsg mmsg; /* warning/error message handler */

enum mandoclevel file_status; /* status of current parse */

enum mandoclevel wlevel; /* ignore messages below this */

int line; /* line number in the file */

int options; /* parser options */

enum mparset inttype; /* which parser to use */

int filenc; /* encoding of the current file */

struct man *pman; /* persistent man parser */

struct mdoc *pmdoc; /* persistent mdoc parser */

struct man *man; /* man parser */

struct mdoc *mdoc; /* mdoc parser */

struct roff *roff; /* roff parser (!NULL) */

int reparse_count; /* finite interp. stack */

mandocmsg mmsg; /* warning/error message handler */

int line; /* line number in the file */

const char *file;

pid_t child; /* the gunzip(1) process */

struct buf *secondary;

char *defos; /* default operating system */

int quick; /* abort the parse early */

};

static void choose_parser(struct mparse *);

static void resize_buf(struct buf *, size_t);

static void mparse_buf_r(struct mparse *, struct buf, int);

static void mparse_buf_r(struct mparse *, struct buf, size_t, int);

static void pset(const char *, int, struct mparse *);

static int read_whole_file(struct mparse *, const char *, int,

struct buf *, int *);

static void mparse_end(struct mparse *);

Line 81 static const enum mandocerr mandoclimits[MANDOCLEVEL_M

Line 79 static const enum mandocerr mandoclimits[MANDOCLEVEL_M

MANDOCERR_WARNING,

MANDOCERR_ERROR,

MANDOCERR_FATAL,

MANDOCERR_UNSUPP,

MANDOCERR_MAX,

MANDOCERR_MAX

};

Line 92 static const char * const mandocerrs[MANDOCERR_MAX] =

Line 90 static const char * const mandocerrs[MANDOCERR_MAX] =

"generic warning",

/* related to the prologue */

"no title in document",

"missing manual title, using UNTITLED",

"document title should be all caps",

"missing manual title, using \"\"",

"lower case character in document title",

"missing manual section, using \"\"",

"unknown manual section",

"unknown manual volume or arch",

"missing date, using today's date",

"date missing, using today's date",

"cannot parse date, using it verbatim",

"prologue macros out of order",

"missing Os macro, using \"\"",

"duplicate prologue macro",

"macro not allowed in prologue",

"late prologue macro",

"macro not allowed in body",

"skipping late title macro",

"prologue macros out of order",

/* related to document structure */

".so is fragile, better use ln(1)",

"NAME section must come first",

"no document body",

"bad NAME section contents",

"content before first section header",

"first section is not \"NAME\"",

"NAME section without name",

"NAME section without description",

"description not at the end of NAME",

"bad NAME section content",

"missing description line, using \"\"",

"sections out of conventional order",

"duplicate section name",

"duplicate section title",

"section header suited to sections 2, 3, and 9 only",

"unexpected section",

"unusual Xr order",

"unusual Xr punctuation",

"AUTHORS section without An macro",

/* related to macros and nesting */

"skipping obsolete macro",

"obsolete macro",

"macro neither callable nor escaped",

"skipping paragraph macro",

"moving paragraph macro out of list",

"skipping no-space macro",

"blocks badly nested",

"child violates parent syntax",

"nested displays are not portable",

"already in literal mode",

"moving content out of list",

".Vt block has child macro",

"fill mode already enabled, skipping",

"fill mode already disabled, skipping",

"line scope broken",

/* related to missing macro arguments */

"skipping empty request",

"conditional request controls empty scope",

"skipping empty macro",

"argument count wrong",

"empty block",

"missing display type",

"empty argument, using 0n",

"list type must come first",

"missing display type, using -ragged",

"tag lists require a width argument",

"list type is not the first argument",

"missing font type",

"missing -width in -tag list, using 8n",

"skipping end of block that is not open",

"missing utility name, using \"\"",

"missing function name, using \"\"",

"empty head in list item",

"empty list item",

"missing font type, using \\fR",

"unknown font type, using \\fR",

"nothing follows prefix",

"empty reference block",

"missing -std argument, adding it",

"missing option string, using \"\"",

"missing resource identifier, using \"\"",

"missing eqn box, using \"\"",

/* related to bad macro arguments */

"skipping argument",

"unterminated quoted argument",

"duplicate argument",

"duplicate display type",

"skipping duplicate argument",

"duplicate list type",

"skipping duplicate display type",

"skipping duplicate list type",

"skipping -width argument",

"wrong number of cells",

"unknown AT&T UNIX version",

"bad Boolean value",

"comma in function argument",

"unknown font",

"parenthesis in function name",

"unknown standard specifier",

"invalid content in Rs block",

"bad width argument",

"invalid Boolean argument",

"unknown font, skipping request",

"odd number of characters in request",

/* related to plain text */

"blank line in non-literal context",

"blank line in fill mode, using .sp",

"tab in non-literal context",

"tab in filled text",

"end of line whitespace",

"whitespace at end of input line",

"bad comment style",

"bad escape sequence",

"invalid escape sequence",

"unterminated quoted string",

"undefined string, using \"\"",

/* related to equations */

/* related to tables */

"unexpected literal in equation",

"tbl line starts with span",

"tbl column starts with span",

"skipping vertical bar in tbl layout",

"generic error",

/* related to equations */

"unexpected equation scope closure",

"equation scope open on exit",

"overlapping equation scopes",

"unexpected end of equation",

"equation syntax error",

/* related to tables */

"bad table syntax",

"non-alphabetic character in tbl options",

"bad table option",

"skipping unknown tbl option",

"bad table layout",

"missing tbl option argument",

"no table layout cells specified",

"wrong tbl option argument size",

"no table data cells specified",

"empty tbl layout",

"ignore data in cell",

"invalid character in tbl layout",

"data block still open",

"unmatched parenthesis in tbl layout",

"ignoring extra data cells",

"tbl without any data cells",

"ignoring data in spanned tbl cell",

"ignoring extra tbl data cells",

"data block open at end of tbl",

/* related to document structure and macros */

NULL,

"input stack limit exceeded, infinite loop?",

"skipping bad character",

"escaped character not allowed in a name",

"manual name not yet set",

"skipping text before the first section header",

"skipping unknown macro",

"NOT IMPLEMENTED, please use groff: skipping request",

"skipping insecure request",

"argument count wrong",

"skipping item outside list",

"skipping column outside column list",

"skipping end of block that is not open",

"missing end of block",

"fewer RS blocks open, skipping",

"scope open on exit",

"inserting missing end of block",

"uname(3) system call failed",

"appending missing end of block",

"macro requires line argument(s)",

"macro requires body argument(s)",

"macro requires argument(s)",

"request requires a numeric argument",

"missing list type",

"line argument(s) will be lost",

"body argument(s) will be lost",

"generic fatal error",

/* related to request and macro arguments */

"escaped character not allowed in a name",

"input too large",

"NOT IMPLEMENTED: Bd -file",

"not a manual",

"missing list type, using -item",

"column syntax is inconsistent",

"missing manual name, using \"\"",

"NOT IMPLEMENTED: .Bd -file",

"uname(3) system call failed, using UNKNOWN",

"argument count wrong, violates syntax",

"unknown standard specifier",

"child violates parent syntax",

"skipping request without numeric argument",

"argument count wrong, violates syntax",

"NOT IMPLEMENTED: .so with absolute path or \"..\"",

"no document body",

".so request failed",

"no document prologue",

"skipping all arguments",

"static buffer exhausted",

"skipping excess arguments",

"divide by zero",

/* system errors */

"unsupported feature",

"cannot open file",

"input too large",

"cannot stat file",

"unsupported control character",

"cannot read file",

"unsupported roff request",

"eqn delim option in tbl",

"unsupported tbl layout modifier",

"ignoring macro in table",

};

static const char * const mandoclevels[MANDOCLEVEL_MAX] = {

Line 218 static const char * const mandoclevels[MANDOCLEVEL_MAX

Line 241 static const char * const mandoclevels[MANDOCLEVEL_MAX

"RESERVED",

"WARNING",

"ERROR",

"FATAL",

"UNSUPP",

"BADARG",

"SYSERR"

};

static void

resize_buf(struct buf *buf, size_t initial)

{

Line 232 resize_buf(struct buf *buf, size_t initial)

Line 256 resize_buf(struct buf *buf, size_t initial)

}

static void

pset(const char *buf, int pos, struct mparse *curp)

choose_parser(struct mparse *curp)

{

int i;

char *cp, *ep;

int format;

* Try to intuit which kind of manual parser should be used. If

* If neither command line arguments -mdoc or -man select

* passed in by command-line (-man, -mdoc), then use that

* a parser nor the roff parser found a .Dd or .TH macro

* explicitly. If passed as -mandoc, then try to guess from the

* yet, look ahead in the main input buffer.

* line: either skip dot-lines, use -mdoc when finding `.Dt', or

* default to -man, which is more lenient.

* Separate out pmdoc/pman from mdoc/man: the first persists

* through all parsers, while the latter is used per-parse.

if ('.' == buf[0] || '\'' == buf[0]) {

if ((format = roff_getformat(curp->roff)) == 0) {

for (i = 1; buf[i]; i++)

cp = curp->primary->buf;

if (' ' != buf[i] && '\t' != buf[i])

ep = cp + curp->primary->sz;

while (cp < ep) {

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

cp++;

if (cp[0] == 'D' && cp[1] == 'd') {

format = MPARSE_MDOC;

break;

}

if (cp[0] == 'T' && cp[1] == 'H') {

format = MPARSE_MAN;

break;

}

cp = memchr(cp, '\n', ep - cp);

if (cp == NULL)

break;

if ('\0' == buf[i])

cp++;

return;

}

switch (curp->inttype) {

if (format == MPARSE_MDOC) {

case (MPARSE_MDOC):

if (curp->man == NULL)

if (NULL == curp->pmdoc)

curp->man = mdoc_alloc(

curp->pmdoc = mdoc_alloc(curp->roff, curp,

curp->roff, curp, curp->defos,

curp->defos, curp->quick);

MPARSE_QUICK & curp->options ? 1 : 0);

assert(curp->pmdoc);

else

curp->mdoc = curp->pmdoc;

curp->man->macroset = MACROSET_MDOC;

mdoc_hash_init();

return;

case (MPARSE_MAN):

if (NULL == curp->pman)

curp->pman = man_alloc(curp->roff, curp,

curp->quick);

assert(curp->pman);

curp->man = curp->pman;

return;

default:

break;

}

if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) {

/* Fall back to man(7) as a last resort. */

if (NULL == curp->pmdoc)

curp->pmdoc = mdoc_alloc(curp->roff, curp,

curp->defos, curp->quick);

assert(curp->pmdoc);

curp->mdoc = curp->pmdoc;

return;

}

if (NULL == curp->pman)

if (curp->man == NULL)

curp->pman = man_alloc(curp->roff, curp, curp->quick);

curp->man = man_alloc(

assert(curp->pman);

curp->roff, curp, curp->defos,

curp->man = curp->pman;

MPARSE_QUICK & curp->options ? 1 : 0);

else

curp->man->macroset = MACROSET_MAN;

man_hash_init();

}

* Main parse routine for an opened file. This is called for each

* Main parse routine for a buffer.

* opened file and simply loops around the full input file, possibly

* It assumes encoding and line numbering are already set up.

* nesting (i.e., with `so').

* It can recurse directly (for invocations of user-defined

* macros, inline equations, and input line traps)

* and indirectly (for .so file inclusion).

static void

mparse_buf_r(struct mparse *curp, struct buf blk, int start)

mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)

{

const struct tbl_span *span;

struct buf ln;

const char *save_file;

char *cp;

size_t pos; /* byte number in the ln buffer */

enum rofferr rr;

int i, of, rc;

int of;

int pos; /* byte number in the ln buffer */

int lnn; /* line number in the real file */

int fd;

pid_t save_child;

unsigned char c;

memset(&ln, 0, sizeof(struct buf));

memset(&ln, 0, sizeof(ln));

lnn = curp->line;

pos = 0;

for (i = 0; i < (int)blk.sz; ) {

while (i < blk.sz) {

if (0 == pos && '\0' == blk.buf[i])

break;

if (start) {

curp->line = lnn;

curp->reparse_count = 0;

if (lnn < 3 &&

curp->filenc & MPARSE_UTF8 &&

curp->filenc & MPARSE_LATIN1)

curp->filenc = preconv_cue(&blk, i);

}

while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {

while (i < blk.sz && (start || blk.buf[i] != '\0')) {

* When finding an unescaped newline character,

Line 327 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 360 mparse_buf_r(struct mparse *curp, struct buf blk, int

* Skip a preceding carriage return, if any.

if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&

if ('\r' == blk.buf[i] && i + 1 < blk.sz &&

'\n' == blk.buf[i + 1])

++i;

if ('\n' == blk.buf[i]) {

Line 337 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 370 mparse_buf_r(struct mparse *curp, struct buf blk, int

}

* Make sure we have space for at least

* Make sure we have space for the worst

* one backslash and one other character

* case of 11 bytes: "\\[u10ffff]\0"

* and the trailing NUL byte.

if (pos + 2 >= (int)ln.sz)

if (pos + 11 > ln.sz)

resize_buf(&ln, 256);

* Warn about bogus characters. If you're using

* Encode 8-bit input.

* non-ASCII encoding, you're screwing your

* readers. Since I'd rather this not happen,

* I'll be helpful and replace these characters

* with "?", so we don't display gibberish.

* Note to manual writers: use special characters.

c = (unsigned char) blk.buf[i];

c = blk.buf[i];

if (c & 0x80) {

if ( ! (curp->filenc && preconv_encode(

&blk, &i, &ln, &pos, &curp->filenc))) {

mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,

curp->line, pos, "0x%x", c);

ln.buf[pos++] = '?';

i++;

}

continue;

}

if ( ! (isascii(c) &&

(isgraph(c) || isblank(c)))) {

* Exclude control characters.

mandoc_msg(MANDOCERR_BADCHAR, curp,

curp->line, pos, NULL);

if (c == 0x7f || (c < 0x20 && c != 0x09)) {

mandoc_vmsg(c == 0x00 || c == 0x04 ||

c > 0x0a ? MANDOCERR_CHAR_BAD :

MANDOCERR_CHAR_UNSUPP,

curp, curp->line, pos, "0x%x", c);

i++;

ln.buf[pos++] = '?';

if (c != '\r')

ln.buf[pos++] = '?';

continue;

}

/* Trailing backslash = a plain char. */

if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {

if (blk.buf[i] != '\\' || i + 1 == blk.sz) {

ln.buf[pos++] = blk.buf[i++];

continue;

}

Line 379 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 422 mparse_buf_r(struct mparse *curp, struct buf blk, int

* skip that one as well.

if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&

if ('\r' == blk.buf[i + 1] && i + 2 < blk.sz &&

'\n' == blk.buf[i + 2])

++i;

if ('\n' == blk.buf[i + 1]) {

Line 391 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 434 mparse_buf_r(struct mparse *curp, struct buf blk, int

if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {

i += 2;

/* Comment, skip to end of line */

for (; i < (int)blk.sz; ++i) {

for (; i < blk.sz; ++i) {

if ('\n' == blk.buf[i]) {

++i;

++lnn;

Line 413 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 456 mparse_buf_r(struct mparse *curp, struct buf blk, int

c = (unsigned char) blk.buf[i+1];

if ( ! (isascii(c) &&

(isgraph(c) || isblank(c)))) {

mandoc_msg(MANDOCERR_BADCHAR, curp,

mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,

curp->line, pos, NULL);

curp->line, pos, "0x%x", c);

i += 2;

ln.buf[pos++] = '?';

continue;

Line 428 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 471 mparse_buf_r(struct mparse *curp, struct buf blk, int

ln.buf[pos++] = blk.buf[i++];

}

if (pos >= (int)ln.sz)

if (pos >= ln.sz)

resize_buf(&ln, 256);

ln.buf[pos] = '\0';

Line 451 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 494 mparse_buf_r(struct mparse *curp, struct buf blk, int

if (curp->secondary) {

curp->secondary->buf =

curp->secondary->buf = mandoc_realloc(

mandoc_realloc

curp->secondary->buf,

(curp->secondary->buf,

curp->secondary->sz + pos + 2);

memcpy(curp->secondary->buf +

curp->secondary->sz,

ln.buf, pos);

curp->secondary->sz += pos;

curp->secondary->buf

[curp->secondary->sz] = '\n';

Line 466 mparse_buf_r(struct mparse *curp, struct buf blk, int

Line 508 mparse_buf_r(struct mparse *curp, struct buf blk, int

[curp->secondary->sz] = '\0';

}

rerun:

rr = roff_parseln

rr = roff_parseln(curp->roff, curp->line, &ln, &of);

(curp->roff, curp->line,

&ln.buf, &ln.sz, of, &of);

switch (rr) {

case (ROFF_REPARSE):

case ROFF_REPARSE:

if (REPARSE_LIMIT >= ++curp->reparse_count)

mparse_buf_r(curp, ln, 0);

mparse_buf_r(curp, ln, of, 0);

else

mandoc_msg(MANDOCERR_ROFFLOOP, curp,

curp->line, pos, NULL);

pos = 0;

continue;

case (ROFF_APPEND):

case ROFF_APPEND:

pos = (int)strlen(ln.buf);

pos = strlen(ln.buf);

continue;

case (ROFF_RERUN):

case ROFF_RERUN:

goto rerun;

case (ROFF_IGN):

case ROFF_IGN:

pos = 0;

continue;

case (ROFF_ERR):

case ROFF_SO:

assert(MANDOCLEVEL_FATAL <= curp->file_status);

if ( ! (curp->options & MPARSE_SO) &&

break;

(i >= blk.sz || blk.buf[i] == '\0')) {

case (ROFF_SO):

curp->sodest = mandoc_strdup(ln.buf + of);

free(ln.buf);

return;

}

* We remove `so' clauses from our lookaside

* buffer because we're going to descend into

* the file recursively.

if (curp->secondary)

curp->secondary->sz -= pos + 1;

mparse_readfd(curp, -1, ln.buf + of);

save_file = curp->file;

if (MANDOCLEVEL_FATAL <= curp->file_status)

save_child = curp->child;

break;

if (mparse_open(curp, &fd, ln.buf + of) ==

MANDOCLEVEL_OK) {

mparse_readfd(curp, fd, ln.buf + of);

curp->file = save_file;

} else {

curp->file = save_file;

mandoc_vmsg(MANDOCERR_SO_FAIL,

curp, curp->line, pos,

".so %s", ln.buf + of);

ln.sz = mandoc_asprintf(&cp,

".sp\nSee the file %s.\n.sp",

ln.buf + of);

free(ln.buf);

ln.buf = cp;

of = 0;

mparse_buf_r(curp, ln, of, 0);

}

curp->child = save_child;

pos = 0;

continue;

default:

Line 508 rerun:

Line 568 rerun:

}

* If we encounter errors in the recursive parse, make

* sure we don't continue parsing.

if (MANDOCLEVEL_FATAL <= curp->file_status)

break;

* If input parsers have not been allocated, do so now.

* We keep these instanced between parsers, but set them

* locally per parse routine since we can use different

* parsers with each one.

if ( ! (curp->man || curp->mdoc))

if (curp->man == NULL ||

pset(ln.buf + of, pos - of, curp);

curp->man->macroset == MACROSET_NONE)

choose_parser(curp);

* Lastly, push down into the parsers themselves. One

* Lastly, push down into the parsers themselves.

* of these will have already been set in the pset()

* routine.

* If libroff returns ROFF_TBL, then add it to the

* currently open parse. Since we only get here if

* there does exist data (see tbl_data.c), we're

Line 536 rerun:

Line 587 rerun:

* Do the same for ROFF_EQN.

rc = -1;

if (rr == ROFF_TBL) {

while ((span = roff_span(curp->roff)) != NULL)

if (curp->man->macroset == MACROSET_MDOC)

mdoc_addspan(curp->man, span);

else

man_addspan(curp->man, span);

} else if (rr == ROFF_EQN) {

if (curp->man->macroset == MACROSET_MDOC)

mdoc_addeqn(curp->man, roff_eqn(curp->roff));

else

man_addeqn(curp->man, roff_eqn(curp->roff));

} else if ((curp->man->macroset == MACROSET_MDOC ?

mdoc_parseln(curp->man, curp->line, ln.buf, of) :

man_parseln(curp->man, curp->line, ln.buf, of)) == 2)

break;

if (ROFF_TBL == rr)

while (NULL != (span = roff_span(curp->roff))) {

rc = curp->man ?

man_addspan(curp->man, span) :

mdoc_addspan(curp->mdoc, span);

if (0 == rc)

break;

}

else if (ROFF_EQN == rr)

rc = curp->mdoc ?

mdoc_addeqn(curp->mdoc,

roff_eqn(curp->roff)) :

man_addeqn(curp->man,

roff_eqn(curp->roff));

else if (curp->man || curp->mdoc)

rc = curp->man ?

man_parseln(curp->man,

curp->line, ln.buf, of) :

mdoc_parseln(curp->mdoc,

curp->line, ln.buf, of);

if (0 == rc) {

assert(MANDOCLEVEL_FATAL <= curp->file_status);

break;

} else if (2 == rc)

break;

/* Temporary buffers typically are not full. */

if (0 == start && '\0' == blk.buf[i])

Line 585 read_whole_file(struct mparse *curp, const char *file,

Line 623 read_whole_file(struct mparse *curp, const char *file,

size_t off;

ssize_t ssz;

#ifdef HAVE_MMAP

#if HAVE_MMAP

struct stat st;

if (-1 == fstat(fd, &st)) {

curp->file_status = MANDOCLEVEL_SYSERR;

perror(file);

if (curp->mmsg)

exit((int)MANDOCLEVEL_SYSERR);

(*curp->mmsg)(MANDOCERR_SYSSTAT, curp->file_status,

file, 0, 0, strerror(errno));

return(0);

}

Line 603 read_whole_file(struct mparse *curp, const char *file,

Line 638 read_whole_file(struct mparse *curp, const char *file,

if (S_ISREG(st.st_mode)) {

if (st.st_size >= (1U << 31)) {

if (st.st_size > 0x7fffffff) {

curp->file_status = MANDOCLEVEL_FATAL;

mandoc_msg(MANDOCERR_TOOLARGE, curp, 0, 0, NULL);

if (curp->mmsg)

(*curp->mmsg)(MANDOCERR_TOOLARGE,

curp->file_status, file, 0, 0, NULL);

return(0);

}

*with_mmap = 1;

Line 630 read_whole_file(struct mparse *curp, const char *file,

Line 662 read_whole_file(struct mparse *curp, const char *file,

for (;;) {

if (off == fb->sz) {

if (fb->sz == (1U << 31)) {

curp->file_status = MANDOCLEVEL_FATAL;

mandoc_msg(MANDOCERR_TOOLARGE, curp,

if (curp->mmsg)

0, 0, NULL);

(*curp->mmsg)(MANDOCERR_TOOLARGE,

curp->file_status,

file, 0, 0, NULL);

break;

}

resize_buf(fb, 65536);

Line 645 read_whole_file(struct mparse *curp, const char *file,

Line 674 read_whole_file(struct mparse *curp, const char *file,

return(1);

}

if (ssz == -1) {

curp->file_status = MANDOCLEVEL_SYSERR;

perror(file);

if (curp->mmsg)

exit((int)MANDOCLEVEL_SYSERR);

(*curp->mmsg)(MANDOCERR_SYSREAD,

curp->file_status, file, 0, 0,

strerror(errno));

break;

}

off += (size_t)ssz;

}

Line 664 static void

Line 689 static void

mparse_end(struct mparse *curp)

{

if (MANDOCLEVEL_FATAL <= curp->file_status)

if (curp->man == NULL && curp->sodest == NULL)

return;

curp->man = man_alloc(curp->roff, curp, curp->defos,

curp->options & MPARSE_QUICK ? 1 : 0);

if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {

if (curp->man->macroset == MACROSET_NONE)

assert(MANDOCLEVEL_FATAL <= curp->file_status);

curp->man->macroset = MACROSET_MAN;

return;

if (curp->man->macroset == MACROSET_MDOC)

}

mdoc_endparse(curp->man);

else

if (curp->man && ! man_endparse(curp->man)) {

man_endparse(curp->man);

assert(MANDOCLEVEL_FATAL <= curp->file_status);

return;

}

if ( ! (curp->man || curp->mdoc)) {

mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL);

curp->file_status = MANDOCLEVEL_FATAL;

return;

}

roff_endparse(curp->roff);

}

static void

mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)

{

struct buf *svprimary;

const char *svfile;

size_t offset;

static int recursion_depth;

if (64 < recursion_depth) {

Line 700 mparse_parse_buffer(struct mparse *curp, struct buf bl

Line 717 mparse_parse_buffer(struct mparse *curp, struct buf bl

/* Line number is per-file. */

svfile = curp->file;

curp->file = file;

svprimary = curp->primary;

curp->primary = &blk;

curp->line = 1;

recursion_depth++;

mparse_buf_r(curp, blk, 1);

/* Skip an UTF-8 byte order mark. */

if (curp->filenc & MPARSE_UTF8 && blk.sz > 2 &&

(unsigned char)blk.buf[0] == 0xef &&

(unsigned char)blk.buf[1] == 0xbb &&

(unsigned char)blk.buf[2] == 0xbf) {

offset = 3;

curp->filenc &= ~MPARSE_LATIN1;

} else

offset = 0;

if (0 == --recursion_depth && MANDOCLEVEL_FATAL > curp->file_status)

mparse_buf_r(curp, blk, offset, 1);

if (--recursion_depth == 0)

mparse_end(curp);

curp->primary = svprimary;

curp->file = svfile;

}

enum mandoclevel

mparse_readmem(struct mparse *curp, const void *buf, size_t len,

mparse_readmem(struct mparse *curp, void *buf, size_t len,

const char *file)

{

struct buf blk;

blk.buf = UNCONST(buf);

blk.buf = buf;

blk.sz = len;

mparse_parse_buffer(curp, blk, file);

return(curp->file_status);

}

* Read the whole file into memory and call the parsers.

* Called recursively when an .so request is encountered.

enum mandoclevel

mparse_readfd(struct mparse *curp, int fd, const char *file)

{

struct buf blk;

int with_mmap;

int save_filenc;

if (-1 == fd && -1 == (fd = open(file, O_RDONLY, 0))) {

if (read_whole_file(curp, file, fd, &blk, &with_mmap)) {

curp->file_status = MANDOCLEVEL_SYSERR;

save_filenc = curp->filenc;

if (curp->mmsg)

curp->filenc = curp->options &

(*curp->mmsg)(MANDOCERR_SYSOPEN,

(MPARSE_UTF8 | MPARSE_LATIN1);

curp->file_status,

mparse_parse_buffer(curp, blk, file);

file, 0, 0, strerror(errno));

curp->filenc = save_filenc;

goto out;

#if HAVE_MMAP

if (with_mmap)

munmap(blk.buf, blk.sz);

else

#endif

free(blk.buf);

}

if (fd != STDIN_FILENO && close(fd) == -1)

* Run for each opened file; may be called more than once for

perror(file);

* each full parse sequence if the opened file is nested (i.e.,

* from `so'). Simply sucks in the whole file and moves into

* the parse phase for the file.

if ( ! read_whole_file(curp, file, fd, &blk, &with_mmap))

mparse_wait(curp);

goto out;

return(curp->file_status);

}

mparse_parse_buffer(curp, blk, file);

enum mandoclevel

mparse_open(struct mparse *curp, int *fd, const char *file)

{

int pfd[2];

int save_errno;

char *cp;

#ifdef HAVE_MMAP

curp->file = file;

if (with_mmap)

munmap(blk.buf, blk.sz);

else

#endif

free(blk.buf);

if (STDIN_FILENO != fd && -1 == close(fd))

/* Unless zipped, try to just open the file. */

perror(file);

out:

if ((cp = strrchr(file, '.')) == NULL ||

return(curp->file_status);

strcmp(cp + 1, "gz")) {

curp->child = 0;

if ((*fd = open(file, O_RDONLY)) != -1)

return(MANDOCLEVEL_OK);

/* Open failed; try to append ".gz". */

mandoc_asprintf(&cp, "%s.gz", file);

file = cp;

} else

cp = NULL;

/* Before forking, make sure the file can be read. */

save_errno = errno;

if (access(file, R_OK) == -1) {

if (cp != NULL)

errno = save_errno;

free(cp);

*fd = -1;

curp->child = 0;

mandoc_msg(MANDOCERR_FILE, curp, 0, 0, strerror(errno));

return(MANDOCLEVEL_ERROR);

}

/* Run gunzip(1). */

if (pipe(pfd) == -1) {

perror("pipe");

exit((int)MANDOCLEVEL_SYSERR);

}

switch (curp->child = fork()) {

case -1:

perror("fork");

exit((int)MANDOCLEVEL_SYSERR);

case 0:

close(pfd[0]);

if (dup2(pfd[1], STDOUT_FILENO) == -1) {

perror("dup");

exit((int)MANDOCLEVEL_SYSERR);

}

signal(SIGPIPE, SIG_DFL);

execlp("gunzip", "gunzip", "-c", file, NULL);

perror("exec");

exit((int)MANDOCLEVEL_SYSERR);

default:

close(pfd[1]);

*fd = pfd[0];

return(MANDOCLEVEL_OK);

}

enum mandoclevel

mparse_wait(struct mparse *curp)

{

int status;

if (curp->child == 0)

return(MANDOCLEVEL_OK);

if (waitpid(curp->child, &status, 0) == -1) {

perror("wait");

exit((int)MANDOCLEVEL_SYSERR);

}

curp->child = 0;

if (WIFSIGNALED(status)) {

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,

"gunzip died from signal %d", WTERMSIG(status));

return(MANDOCLEVEL_ERROR);

}

if (WEXITSTATUS(status)) {

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,

"gunzip failed with code %d", WEXITSTATUS(status));

return(MANDOCLEVEL_ERROR);

}

return(MANDOCLEVEL_OK);

}

struct mparse *

mparse_alloc(enum mparset inttype, enum mandoclevel wlevel,

mparse_alloc(int options, enum mandoclevel wlevel, mandocmsg mmsg,

mandocmsg mmsg, char *defos, int quick)

const struct mchars *mchars, const char *defos)

{

struct mparse *curp;

assert(wlevel <= MANDOCLEVEL_FATAL);

curp = mandoc_calloc(1, sizeof(struct mparse));

curp->options = options;

curp->wlevel = wlevel;

curp->mmsg = mmsg;

curp->inttype = inttype;

curp->defos = defos;

curp->quick = quick;

curp->roff = roff_alloc(inttype, curp);

curp->mchars = mchars;

curp->roff = roff_alloc(curp, curp->mchars, options);

if (curp->options & MPARSE_MDOC) {

curp->man = mdoc_alloc(

curp->roff, curp, curp->defos,

curp->options & MPARSE_QUICK ? 1 : 0);

mdoc_hash_init();

}

if (curp->options & MPARSE_MAN) {

curp->man = man_alloc(

curp->roff, curp, curp->defos,

curp->options & MPARSE_QUICK ? 1 : 0);

man_hash_init();

}

return(curp);

}

Line 790 mparse_reset(struct mparse *curp)

Line 914 mparse_reset(struct mparse *curp)

roff_reset(curp->roff);

if (curp->mdoc)

if (curp->man != NULL) {

mdoc_reset(curp->mdoc);

if (curp->man->macroset == MACROSET_MDOC)

if (curp->man)

mdoc_reset(curp->man);

man_reset(curp->man);

else

man_reset(curp->man);

curp->man->macroset = MACROSET_NONE;

}

if (curp->secondary)

curp->secondary->sz = 0;

curp->file_status = MANDOCLEVEL_OK;

curp->mdoc = NULL;

curp->man = NULL;

free(curp->sodest);

curp->sodest = NULL;

}

void

mparse_free(struct mparse *curp)

{

if (curp->pmdoc)

if (curp->man->macroset == MACROSET_MDOC)

mdoc_free(curp->pmdoc);

mdoc_free(curp->man);

if (curp->pman)

if (curp->man->macroset == MACROSET_MAN)

man_free(curp->pman);

man_free(curp->man);

if (curp->roff)

roff_free(curp->roff);

if (curp->secondary)

free(curp->secondary->buf);

free(curp->secondary);

free(curp->sodest);

free(curp);

}

void

mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man)

mparse_result(struct mparse *curp, struct roff_man **man,

char **sodest)

{

if (mdoc)

if (sodest && NULL != (*sodest = curp->sodest)) {

*mdoc = curp->mdoc;

*man = NULL;

return;

}

if (man)

*man = curp->man;

}

Line 837 mandoc_vmsg(enum mandocerr t, struct mparse *m,

Line 969 mandoc_vmsg(enum mandocerr t, struct mparse *m,

va_list ap;

va_start(ap, fmt);

vsnprintf(buf, sizeof(buf) - 1, fmt, ap);

(void)vsnprintf(buf, sizeof(buf), fmt, ap);

va_end(ap);

mandoc_msg(t, m, ln, pos, buf);

}

void

mandoc_msg(enum mandocerr er, struct mparse *m,

int ln, int col, const char *msg)

{

enum mandoclevel level;

level = MANDOCLEVEL_FATAL;

level = MANDOCLEVEL_UNSUPP;

while (er < mandoclimits[level])

level--;

if (level < m->wlevel)

if (level < m->wlevel && er != MANDOCERR_FILE)

return;

if (m->mmsg)

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