mandoc/read.c - diff

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Up to [cvsweb.bsd.lv] / mandoc

Diff for /mandoc/read.c between version 1.98 and 1.179

version 1.98, 2014/11/26 23:42:14

version 1.179, 2017/06/24 14:38:33

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

Line 19

#include "config.h"

#include <sys/types.h>

#if HAVE_MMAP

#include <sys/mman.h>

#include <sys/stat.h>

#endif

#include <sys/wait.h>

#include <assert.h>

#include <ctype.h>

#if HAVE_ERR

#include <err.h>

#endif

#include <errno.h>

#include <fcntl.h>

#include <stdarg.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <zlib.h>

#include "mandoc.h"

#include "mandoc_aux.h"

#include "libmandoc.h"

#include "mandoc.h"

#include "roff.h"

#include "mdoc.h"

#include "man.h"

#include "main.h"

#include "libmandoc.h"

#include "roff_int.h"

#define REPARSE_LIMIT 1000

struct mparse {

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) */

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

struct roff_man *man; /* man parser */

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 */

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

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

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

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

enum mandocerr mmin; /* ignore messages below this */

int options; /* parser options */

int gzip; /* current input file is gzipped */

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

int reparse_count; /* finite interp. stack */

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

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

};

static void choose_parser(struct mparse *);

static void resize_buf(struct buf *, size_t);

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

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

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

struct buf *, int *);

static void mparse_end(struct mparse *);

Line 78 static void mparse_parse_buffer(struct mparse *, str

Line 75 static void mparse_parse_buffer(struct mparse *, str

static const enum mandocerr mandoclimits[MANDOCLEVEL_MAX] = {

MANDOCERR_OK,

MANDOCERR_STYLE,

MANDOCERR_WARNING,

MANDOCERR_ERROR,

MANDOCERR_FATAL,

MANDOCERR_UNSUPP,

MANDOCERR_MAX,

MANDOCERR_MAX

};

Line 89 static const enum mandocerr mandoclimits[MANDOCLEVEL_M

Line 86 static const enum mandocerr mandoclimits[MANDOCLEVEL_M

static const char * const mandocerrs[MANDOCERR_MAX] = {

"ok",

"base system convention",

"Mdocdate found",

"Mdocdate missing",

"RCS id missing",

"generic style suggestion",

"legacy man(7) date format",

"duplicate RCS id",

"useless macro",

"consider using OS macro",

"errnos out of order",

"duplicate errno",

"description line ends with a full stop",

"no blank before trailing delimiter",

"function name without markup",

"generic warning",

/* related to the prologue */

Line 97 static const char * const mandocerrs[MANDOCERR_MAX] =

Line 112 static const char * const mandocerrs[MANDOCERR_MAX] =

"lower case character in document title",

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

"unknown manual section",

"unknown manual volume or arch",

"missing date, using today's date",

"cannot parse date, using it verbatim",

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

Line 111 static const char * const mandocerrs[MANDOCERR_MAX] =

Line 125 static const char * const mandocerrs[MANDOCERR_MAX] =

"no document body",

"content before first section header",

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

"bad NAME section contents",

"NAME section without Nm before Nd",

"NAME section without description",

"description not at the end of NAME",

"bad NAME section content",

"missing comma before name",

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

"description line outside NAME section",

"sections out of conventional order",

"duplicate section title",

"unexpected section",

Line 121 static const char * const mandocerrs[MANDOCERR_MAX] =

Line 141 static const char * const mandocerrs[MANDOCERR_MAX] =

/* related to macros and nesting */

"obsolete macro",

"macro neither callable nor escaped",

"skipping paragraph macro",

"moving paragraph macro out of list",

"skipping no-space macro",

"blocks badly nested",

"nested displays are not portable",

"moving content out of list",

".Vt block has child macro",

"fill mode already enabled, skipping",

"fill mode already disabled, skipping",

"line scope broken",

"skipping blank line in line scope",

/* related to missing macro arguments */

"skipping empty request",

"conditional request controls empty scope",

"skipping empty macro",

"empty block",

"empty argument, using 0n",

"argument count wrong",

"missing display type, using -ragged",

"list type is not the first argument",

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

"missing -width in -tag list, using 6n",

"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 section argument",

"missing -std argument, adding it",

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

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

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

/* related to bad macro arguments */

Line 156 static const char * const mandocerrs[MANDOCERR_MAX] =

Line 183 static const char * const mandocerrs[MANDOCERR_MAX] =

"skipping duplicate display type",

"skipping duplicate list type",

"skipping -width argument",

"wrong number of cells",

"unknown AT&T UNIX version",

"comma in function argument",

"parenthesis in function name",

"unknown library name",

"invalid content in Rs block",

"invalid Boolean argument",

"unknown font, skipping request",

"odd number of characters in request",

/* related to plain text */

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

"tab in filled text",

"whitespace at end of input line",

"new sentence, new line",

"bad comment style",

"invalid escape sequence",

"undefined string, using \"\"",

/* related to tables */

"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",

/* 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",

"skipping unknown macro",

"skipping insecure request",

"skipping item outside list",

"skipping column outside column list",

"skipping end of block that is not open",

"fewer RS blocks open, skipping",

"inserting missing end of block",

"appending missing end of block",

/* related to request and macro arguments */

"escaped character not allowed in a name",

"argument count wrong",

"NOT IMPLEMENTED: Bd -file",

"skipping display without arguments",

"missing list type, using -item",

"argument is not numeric, using 1",

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

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

"unknown standard specifier",

"skipping request without numeric argument",

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

".so request failed",

"skipping all arguments",

"skipping excess arguments",

"divide by zero",

"generic fatal error",

"unsupported feature",

"input too large",

"NOT IMPLEMENTED: Bd -file",

"unsupported control character",

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

"unsupported roff request",

".so request failed",

"eqn delim option in tbl",

"unsupported tbl layout modifier",

/* system errors */

"ignoring macro in table",

"cannot dup file descriptor",

"cannot exec",

"gunzip failed with code",

"cannot fork",

NULL,

"cannot open pipe",

"cannot read file",

"gunzip died from signal",

"cannot stat file",

"wait failed",

};

static const char * const mandoclevels[MANDOCLEVEL_MAX] = {

"SUCCESS",

"RESERVED",

"STYLE",

"WARNING",

"ERROR",

"FATAL",

"UNSUPP",

"BADARG",

"SYSERR"

};

Line 285 choose_parser(struct mparse *curp)

Line 314 choose_parser(struct mparse *curp)

}

if (format == MPARSE_MDOC) {

if (NULL == curp->pmdoc)

curp->man->macroset = MACROSET_MDOC;

curp->pmdoc = mdoc_alloc(

if (curp->man->mdocmac == NULL)

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

curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);

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

} else {

assert(curp->pmdoc);

curp->man->macroset = MACROSET_MAN;

curp->mdoc = curp->pmdoc;

if (curp->man->manmac == NULL)

return;

curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);

}

curp->man->first->tok = TOKEN_NONE;

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

if (NULL == curp->pman)

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

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

assert(curp->pman);

curp->man = curp->pman;

}

Line 310 choose_parser(struct mparse *curp)

Line 332 choose_parser(struct mparse *curp)

* macros, inline equations, and input line traps)

* and indirectly (for .so file inclusion).

static void

static int

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 of, rc;

int of;

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

int fd;

unsigned char c;

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

Line 373 mparse_buf_r(struct mparse *curp, struct buf blk, size

Line 398 mparse_buf_r(struct mparse *curp, struct buf blk, size

if (c & 0x80) {

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

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

mandoc_vmsg(MANDOCERR_BADCHAR,

mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,

curp, curp->line, pos,

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

"0x%x", c);

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

i++;

}

Line 387 mparse_buf_r(struct mparse *curp, struct buf blk, size

Line 411 mparse_buf_r(struct mparse *curp, struct buf blk, size

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

mandoc_vmsg(MANDOCERR_BADCHAR, curp,

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

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

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 == blk.sz) {

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

continue;

}

* Found escape and at least one other character.

* When it's a newline character, skip it.

* When there is a carriage return in between,

* skip that one as well.

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

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

++i;

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

i += 2;

++lnn;

continue;

}

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

i += 2;

/* Comment, skip to end of line */

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

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

++i;

++lnn;

break;

}

/* Backout trailing whitespaces */

for (; pos > 0; --pos) {

if (ln.buf[pos - 1] != ' ')

break;

if (pos > 2 && ln.buf[pos - 2] == '\\')

break;

}

break;

}

/* Catch escaped bogus characters. */

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

if ( ! (isascii(c) &&

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

mandoc_vmsg(MANDOCERR_BADCHAR, curp,

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

i += 2;

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

continue;

}

/* Some other escape sequence, copy & cont. */

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

}

if (pos >= ln.sz)

if (pos + 1 >= ln.sz)

resize_buf(&ln, 256);

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

ln.buf[pos++] = '\n';

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

Line 498 rerun:

Line 467 rerun:

switch (rr) {

case ROFF_REPARSE:

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

if (++curp->reparse_count > REPARSE_LIMIT)

mparse_buf_r(curp, ln, of, 0);

else

mandoc_msg(MANDOCERR_ROFFLOOP, curp,

curp->line, pos, NULL);

pos = 0;

else if (mparse_buf_r(curp, ln, of, 0) == 1 ||

continue;

start == 1) {

pos = 0;

continue;

}

free(ln.buf);

return 0;

case ROFF_APPEND:

pos = strlen(ln.buf);

continue;

Line 513 rerun:

Line 485 rerun:

case ROFF_IGN:

pos = 0;

continue;

case ROFF_ERR:

assert(MANDOCLEVEL_FATAL <= curp->file_status);

break;

case ROFF_SO:

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

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

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

free(ln.buf);

return;

return 1;

}

* We remove `so' clauses from our lookaside

Line 530 rerun:

Line 499 rerun:

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) {

if ((fd = mparse_open(curp, ln.buf + of)) != -1) {

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

close(fd);

curp->file = save_file;

} else {

curp->file = save_file;

mandoc_vmsg(MANDOCERR_SO_FAIL,

curp, curp->line, pos,

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

break;

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);

}

pos = 0;

continue;

Line 543 rerun:

Line 523 rerun:

break;

}

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

* 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))

choose_parser(curp);

Line 570 rerun:

Line 535 rerun:

* Do the same for ROFF_EQN.

rc = -1;

if (rr == ROFF_TBL)

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

roff_addtbl(curp->man, span);

else if (rr == ROFF_EQN)

roff_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 610 rerun:

Line 556 rerun:

}

free(ln.buf);

return 1;

}

static int

read_whole_file(struct mparse *curp, const char *file, int fd,

struct buf *fb, int *with_mmap)

{

struct stat st;

gzFile gz;

size_t off;

ssize_t ssz;

#if HAVE_MMAP

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

struct stat st;

err((int)MANDOCLEVEL_SYSERR, "%s", file);

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

curp->file_status = MANDOCLEVEL_SYSERR;

if (curp->mmsg)

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

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

return(0);

}

* If we're a regular file, try just reading in the whole entry

Line 636 read_whole_file(struct mparse *curp, const char *file,

Line 578 read_whole_file(struct mparse *curp, const char *file,

* concerned that this is going to tank any machines.

if (S_ISREG(st.st_mode)) {

if (curp->gzip == 0 && 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)

return 0;

(*curp->mmsg)(MANDOCERR_TOOLARGE,

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

return(0);

}

*with_mmap = 1;

fb->sz = (size_t)st.st_size;

fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);

if (fb->buf != MAP_FAILED)

return(1);

return 1;

}

#endif

if (curp->gzip) {

if ((gz = gzdopen(fd, "rb")) == NULL)

err((int)MANDOCLEVEL_SYSERR, "%s", file);

} else

gz = NULL;

* If this isn't a regular file (like, say, stdin), then we must

* go the old way and just read things in bit by bit.

Line 664 read_whole_file(struct mparse *curp, const char *file,

Line 608 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);

}

ssz = read(fd, fb->buf + (int)off, fb->sz - off);

ssz = curp->gzip ?

gzread(gz, fb->buf + (int)off, fb->sz - off) :

read(fd, fb->buf + (int)off, fb->sz - off);

if (ssz == 0) {

fb->sz = off;

return(1);

return 1;

}

if (ssz == -1) {

if (ssz == -1)

curp->file_status = MANDOCLEVEL_SYSERR;

err((int)MANDOCLEVEL_SYSERR, "%s", file);

if (curp->mmsg)

(*curp->mmsg)(MANDOCERR_SYSREAD,

curp->file_status, file, 0, 0,

strerror(errno));

break;

}

off += (size_t)ssz;

}

free(fb->buf);

fb->buf = NULL;

return(0);

return 0;

}

static void

mparse_end(struct mparse *curp)

{

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

if (MANDOCLEVEL_FATAL <= curp->file_status)

curp->man->macroset = MACROSET_MAN;

return;

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

mdoc_endparse(curp->man);

if (curp->mdoc == NULL &&

else

curp->man == NULL &&

man_endparse(curp->man);

curp->sodest == NULL) {

if (curp->options & MPARSE_MDOC)

curp->mdoc = curp->pmdoc;

else {

if (curp->pman == NULL)

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

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

curp->man = curp->pman;

}

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

assert(MANDOCLEVEL_FATAL <= curp->file_status);

return;

}

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

assert(MANDOCLEVEL_FATAL <= curp->file_status);

return;

}

roff_endparse(curp->roff);

}

Line 760 mparse_parse_buffer(struct mparse *curp, struct buf bl

Line 676 mparse_parse_buffer(struct mparse *curp, struct buf bl

mparse_buf_r(curp, blk, offset, 1);

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

if (--recursion_depth == 0)

mparse_end(curp);

curp->primary = svprimary;

Line 768 mparse_parse_buffer(struct mparse *curp, struct buf bl

Line 684 mparse_parse_buffer(struct mparse *curp, struct buf bl

}

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);

return curp->file_status;

}

* If a file descriptor is given, use it and assume it points

* to the named file. Otherwise, open the named file.

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

* Called recursively when an .so request is encountered.

Line 792 mparse_readfd(struct mparse *curp, int fd, const char

Line 706 mparse_readfd(struct mparse *curp, int fd, const char

struct buf blk;

int with_mmap;

int save_filenc;

pid_t save_child;

save_child = curp->child;

if (fd != -1)

curp->child = 0;

else if (mparse_open(curp, &fd, file) >= MANDOCLEVEL_SYSERR)

goto out;

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

save_filenc = curp->filenc;

curp->filenc = curp->options &

(MPARSE_UTF8 | MPARSE_LATIN1);

mparse_parse_buffer(curp, blk, file);

curp->filenc = save_filenc;

#if HAVE_MMAP

if (with_mmap)

munmap(blk.buf, blk.sz);

else

#endif

free(blk.buf);

}

return curp->file_status;

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

perror(file);

mparse_wait(curp);

out:

curp->child = save_child;

return(curp->file_status);

}

enum mandoclevel

int

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

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

{

int pfd[2];

int save_errno;

char *cp;

enum mandocerr err;

int fd;

pfd[1] = -1;

curp->file = file;

cp = strrchr(file, '.');

curp->gzip = (cp != NULL && ! strcmp(cp + 1, "gz"));

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

/* First try to use the filename as it is. */

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

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

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

return fd;

curp->child = 0;

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

return(MANDOCLEVEL_OK);

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

* If that doesn't work and the filename doesn't

* already end in .gz, try appending .gz.

if ( ! curp->gzip) {

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

file = cp;

fd = open(cp, O_RDONLY);

} else

free(cp);

cp = NULL;

if (fd != -1) {

curp->gzip = 1;

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

return fd;

save_errno = errno;

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

if (cp != NULL)

errno = save_errno;

err = MANDOCERR_SYSOPEN;

goto out;

}

/* Run gunzip(1). */

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

err = MANDOCERR_SYSPIPE;

goto out;

}

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

case -1:

err = MANDOCERR_SYSFORK;

close(pfd[0]);

close(pfd[1]);

pfd[1] = -1;

break;

case 0:

close(pfd[0]);

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

err = MANDOCERR_SYSDUP;

break;

}

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

err = MANDOCERR_SYSEXEC;

break;

default:

close(pfd[1]);

*fd = pfd[0];

return(MANDOCLEVEL_OK);

}

out:

/* Neither worked, give up. */

free(cp);

*fd = -1;

curp->child = 0;

curp->file_status = MANDOCLEVEL_SYSERR;

if (curp->mmsg)

(*curp->mmsg)(err, curp->file_status, curp->file,

0, 0, strerror(errno));

if (pfd[1] != -1)

exit(1);

return(curp->file_status);

}

enum mandoclevel

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

mparse_wait(struct mparse *curp)

return -1;

{

int status;

if (curp->child == 0)

return(MANDOCLEVEL_OK);

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

mandoc_msg(MANDOCERR_SYSWAIT, curp, 0, 0,

strerror(errno));

curp->file_status = MANDOCLEVEL_SYSERR;

return(curp->file_status);

}

if (WIFSIGNALED(status)) {

mandoc_vmsg(MANDOCERR_SYSSIG, curp, 0, 0,

"%d", WTERMSIG(status));

curp->file_status = MANDOCLEVEL_SYSERR;

return(curp->file_status);

}

if (WEXITSTATUS(status)) {

mandoc_vmsg(MANDOCERR_SYSEXIT, curp, 0, 0,

"%d", WEXITSTATUS(status));

curp->file_status = MANDOCLEVEL_SYSERR;

return(curp->file_status);

}

return(MANDOCLEVEL_OK);

}

struct mparse *

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

mparse_alloc(int options, enum mandocerr mmin, mandocmsg mmsg,

const struct mchars *mchars, const char *defos)

enum mandoc_os os_e, const char *os_s)

{

struct mparse *curp;

assert(wlevel <= MANDOCLEVEL_FATAL);

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

curp->options = options;

curp->wlevel = wlevel;

curp->mmin = mmin;

curp->mmsg = mmsg;

curp->defos = defos;

curp->os_s = os_s;

curp->mchars = mchars;

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

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

curp->man = roff_man_alloc(curp->roff, curp, curp->os_s,

if (curp->options & MPARSE_MDOC)

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

curp->pmdoc = mdoc_alloc(

if (curp->options & MPARSE_MDOC) {

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

curp->man->macroset = MACROSET_MDOC;

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

if (curp->man->mdocmac == NULL)

if (curp->options & MPARSE_MAN)

curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);

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

} else if (curp->options & MPARSE_MAN) {

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

curp->man->macroset = MACROSET_MAN;

if (curp->man->manmac == NULL)

return(curp);

curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);

}

curp->man->first->tok = TOKEN_NONE;

curp->man->meta.os_e = os_e;

return curp;

}

void

mparse_reset(struct mparse *curp)

{

roff_reset(curp->roff);

roff_man_reset(curp->man);

if (curp->mdoc)

free(curp->sodest);

mdoc_reset(curp->mdoc);

curp->sodest = NULL;

if (curp->man)

man_reset(curp->man);

if (curp->secondary)

curp->secondary->sz = 0;

curp->file_status = MANDOCLEVEL_OK;

curp->mdoc = NULL;

curp->gzip = 0;

curp->man = NULL;

free(curp->sodest);

curp->sodest = NULL;

}

void

mparse_free(struct mparse *curp)

{

if (curp->pmdoc)

roffhash_free(curp->man->mdocmac);

mdoc_free(curp->pmdoc);

roffhash_free(curp->man->manmac);

if (curp->pman)

roff_man_free(curp->man);

man_free(curp->pman);

roff_free(curp->roff);

if (curp->roff)

roff_free(curp->roff);

if (curp->secondary)

free(curp->secondary->buf);

Line 998 mparse_free(struct mparse *curp)

Line 820 mparse_free(struct mparse *curp)

}

void

mparse_result(struct mparse *curp,

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

struct mdoc **mdoc, struct man **man, char **sodest)

char **sodest)

{

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

*mdoc = NULL;

*man = NULL;

return;

}

if (mdoc)

*mdoc = curp->mdoc;

if (man)

*man = curp->man;

}

void

mparse_updaterc(struct mparse *curp, enum mandoclevel *rc)

{

if (curp->file_status > *rc)

*rc = curp->file_status;

}

void

mandoc_vmsg(enum mandocerr t, struct mparse *m,

int ln, int pos, const char *fmt, ...)

{

Line 1033 mandoc_msg(enum mandocerr er, struct mparse *m,

Line 859 mandoc_msg(enum mandocerr er, struct mparse *m,

{

enum mandoclevel level;

level = MANDOCLEVEL_FATAL;

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

return;

level = MANDOCLEVEL_UNSUPP;

while (er < mandoclimits[level])

level--;

if (level < m->wlevel)

return;

if (m->mmsg)

(*m->mmsg)(er, level, m->file, ln, col, msg);

Line 1051 const char *

Line 877 const char *

mparse_strerror(enum mandocerr er)

{

return(mandocerrs[er]);

return mandocerrs[er];

}

const char *

mparse_strlevel(enum mandoclevel lvl)

{

return(mandoclevels[lvl]);

return mandoclevels[lvl];

}

void

Line 1073 mparse_getkeep(const struct mparse *p)

Line 899 mparse_getkeep(const struct mparse *p)

{

assert(p->secondary);

return(p->secondary->sz ? p->secondary->buf : NULL);

return p->secondary->sz ? p->secondary->buf : NULL;

}

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