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📄 INSTALL(6.86 KB)
📄 LICENSE(2.46 KB)
📄 Makefile(15.29 KB)
📄 Makefile.depend(5.65 KB)
📄 NEWS(60.04 KB)
📄 TODO(23.98 KB)
📄 apropos.1(10.66 KB)
📄 arch.c(1.94 KB)
📄 att.c(1.62 KB)
📄 catman.8(4.49 KB)
📄 catman.c(5.52 KB)
📄 cgi.c(27.06 KB)
📄 cgi.h.example(220 B)
📄 chars.c(13.24 KB)
📄 compat_err.c(2.68 KB)
📄 compat_fts.c(17.42 KB)
📄 compat_fts.h(4.09 KB)
📄 compat_getline.c(1.59 KB)
📄 compat_getsubopt.c(2.89 KB)
📄 compat_isblank.c(986 B)
📄 compat_mkdtemp.c(1.59 KB)
📄 compat_ohash.c(6.82 KB)
📄 compat_ohash.h(2.63 KB)
📄 compat_progname.c(1.05 KB)
📄 compat_reallocarray.c(1.49 KB)
📄 compat_recallocarray.c(2.88 KB)
📄 compat_strcasestr.c(2.38 KB)
📄 compat_stringlist.c(2.71 KB)
📄 compat_stringlist.h(1.73 KB)
📄 compat_strlcat.c(1.71 KB)
📄 compat_strlcpy.c(1.59 KB)
📄 compat_strndup.c(1.3 KB)
📄 compat_strsep.c(2.55 KB)
📄 compat_strtonum.c(1.88 KB)
📄 compat_vasprintf.c(1.55 KB)
📄 config.h(1.33 KB)
📄 configure(17.5 KB)
📄 configure.local.example(11.37 KB)
📄 dba.c(13.02 KB)
📄 dba.h(1.73 KB)
📄 dba_array.c(4.23 KB)
📄 dba_array.h(2 KB)
📄 dba_read.c(2.33 KB)
📄 dba_write.c(2.42 KB)
📄 dba_write.h(1.23 KB)
📄 dbm.c(9.28 KB)
📄 dbm.h(1.94 KB)
📄 dbm_map.c(4.67 KB)
📄 dbm_map.h(1.2 KB)
📄 demandoc.1(2.64 KB)
📄 demandoc.c(5.21 KB)
📄 eqn.7(12.07 KB)
📄 eqn.c(27.21 KB)
📄 eqn.h(2.19 KB)
📄 eqn_html.c(5.91 KB)
📄 eqn_parse.h(1.96 KB)
📄 eqn_term.c(4.83 KB)
📄 gmdiff(1.74 KB)
📄 html.c(19.34 KB)
📄 html.h(3.86 KB)
📄 lib.c(1.07 KB)
📄 lib.in(8.96 KB)
📄 libman.h(1.66 KB)
📄 libmandoc.h(3.21 KB)
📄 libmdoc.h(2.97 KB)
📄 main.c(28.93 KB)
📄 main.h(2.06 KB)
📄 makewhatis.8(4.78 KB)
📄 man-cgi.css(464 B)
📄 man.1(9.33 KB)
📄 man.7(16.8 KB)
📄 man.c(8.62 KB)
📄 man.cgi.3(7.83 KB)
📄 man.cgi.8(11.02 KB)
📄 man.conf.5(3.92 KB)
📄 man.h(991 B)
📄 man.options.1(21.05 KB)
📄 man_html.c(13.39 KB)
📄 man_macro.c(11.4 KB)
📄 man_term.c(25.6 KB)
📄 man_validate.c(11.84 KB)
📄 manconf.h(1.56 KB)
📄 mandoc.1(54.89 KB)
📄 mandoc.3(12.5 KB)
📄 mandoc.c(12.41 KB)
📄 mandoc.css(8.63 KB)
📄 mandoc.db.5(5.74 KB)
📄 mandoc.h(14.92 KB)
📄 mandoc_aux.c(2.42 KB)
📄 mandoc_aux.h(1.31 KB)
📄 mandoc_char.7(29.23 KB)
📄 mandoc_escape.3(9.33 KB)
📄 mandoc_headers.3(12.41 KB)
📄 mandoc_html.3(7.42 KB)
📄 mandoc_malloc.3(4.46 KB)
📄 mandoc_msg.c(8.92 KB)
📄 mandoc_ohash.c(1.58 KB)
📄 mandoc_ohash.h(1004 B)
📄 mandoc_parse.h(1.82 KB)
📄 mandoc_xr.c(2.75 KB)
📄 mandoc_xr.h(1.17 KB)
📄 mandocd.8(4.59 KB)
📄 mandocd.c(5.98 KB)
📄 mandocdb.c(55.16 KB)
📄 manpath.c(7.73 KB)
📄 manpath.h(1.22 KB)
📄 mansearch.3(3.26 KB)
📄 mansearch.c(18.99 KB)
📄 mansearch.h(4.03 KB)
📄 mchars_alloc.3(5.24 KB)
📄 mdoc.7(73.34 KB)
📄 mdoc.c(9.99 KB)
📄 mdoc.h(3.96 KB)
📄 mdoc_argv.c(16.19 KB)
📄 mdoc_html.c(36.48 KB)
📄 mdoc_macro.c(39.55 KB)
📄 mdoc_man.c(37.07 KB)
📄 mdoc_markdown.c(33.41 KB)
📄 mdoc_state.c(5.24 KB)
📄 mdoc_term.c(43.69 KB)
📄 mdoc_validate.c(61.85 KB)
📄 msec.c(1.09 KB)
📄 msec.in(1.48 KB)
📄 out.c(13.61 KB)
📄 out.h(2.26 KB)
📄 preconv.c(3.84 KB)
📄 predefs.in(2.05 KB)
📄 read.c(16.44 KB)
📄 roff.7(61.96 KB)
📄 roff.c(98.93 KB)
📄 roff.h(8.85 KB)
📄 roff_html.c(2.92 KB)
📄 roff_int.h(4.08 KB)
📄 roff_term.c(5.36 KB)
📄 roff_validate.c(3.41 KB)
📄 soelim.1(2.6 KB)
📄 soelim.c(3.76 KB)
📄 st.c(4.33 KB)
📄 tag.c(6.65 KB)
📄 tag.h(1.09 KB)
📄 tbl.3(6.9 KB)
📄 tbl.7(10.91 KB)
📄 tbl.c(3.89 KB)
📄 tbl.h(4.43 KB)
📄 tbl_data.c(7.3 KB)
📄 tbl_html.c(5.74 KB)
📄 tbl_int.h(2.09 KB)
📄 tbl_layout.c(8.06 KB)
📄 tbl_opts.c(3.77 KB)
📄 tbl_parse.h(1.31 KB)
📄 tbl_term.c(24.42 KB)
📄 term.c(24.4 KB)
📄 term.h(6.14 KB)
📄 term_ascii.c(9.88 KB)
📄 term_ps.c(27.41 KB)
📄 term_tab.c(3 KB)
📄 test-EFTYPE.c(56 B)
📄 test-O_DIRECTORY.c(88 B)
📄 test-PATH_MAX.c(1.02 KB)
📄 test-be32toh.c(147 B)
📄 test-cmsg.c(174 B)
📄 test-dirent-namlen.c(124 B)
📄 test-err.c(994 B)
📄 test-fgetln.c(147 B)
📄 test-fts.c(964 B)
📄 test-getline.c(186 B)
📄 test-getsubopt.c(1.31 KB)
📄 test-isblank.c(96 B)
📄 test-mkdtemp.c(175 B)
📄 test-nanosleep.c(239 B)
📄 test-noop.c(30 B)
📄 test-ntohl.c(91 B)
📄 test-ohash.c(585 B)
📄 test-pledge.c(73 B)
📄 test-progname.c(118 B)
📄 test-reallocarray.c(75 B)
📄 test-recallocarray.c(132 B)
📄 test-recvmsg.c(100 B)
📄 test-rewb-bsd.c(618 B)
📄 test-rewb-sysv.c(610 B)
📄 test-sandbox_init.c(186 B)
📄 test-strcasestr.c(131 B)
📄 test-stringlist.c(1.14 KB)
📄 test-strlcat.c(166 B)
📄 test-strlcpy.c(148 B)
📄 test-strndup.c(141 B)
📄 test-strptime.c(212 B)
📄 test-strsep.c(183 B)
📄 test-strtonum.c(1.25 KB)
📄 test-vasprintf.c(1.25 KB)
📄 test-wchar.c(1.58 KB)
📄 tree.c(8.17 KB)

Editing: read.c

/*	$Id: read.c,v 1.214 2019/07/10 19:39:01 schwarze Exp $ */
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2010-2019 Ingo Schwarze <schwarze@openbsd.org>
 * Copyright (c) 2010, 2012 Joerg Sonnenberger <joerg@netbsd.org>
 *
 * 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 AUTHORS DISCLAIM ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * 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.
 */
#include "config.h"

#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>

#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <zlib.h>

#include "mandoc_aux.h"
#include "mandoc.h"
#include "roff.h"
#include "mdoc.h"
#include "man.h"
#include "mandoc_parse.h"
#include "libmandoc.h"
#include "roff_int.h"

#define	REPARSE_LIMIT	1000

struct	mparse {
	struct roff	 *roff; /* roff parser (!NULL) */
	struct roff_man	 *man; /* man parser */
	struct buf	 *primary; /* buffer currently being parsed */
	struct buf	 *secondary; /* copy of top level input */
	struct buf	 *loop; /* open .while request line */
	const char	 *os_s; /* default operating system */
	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 */
};

static	void	  choose_parser(struct mparse *);
static	void	  free_buf_list(struct buf *);
static	void	  resize_buf(struct buf *, size_t);
static	int	  mparse_buf_r(struct mparse *, struct buf, size_t, int);
static	int	  read_whole_file(struct mparse *, int, struct buf *, int *);
static	void	  mparse_end(struct mparse *);

static void
resize_buf(struct buf *buf, size_t initial)
{

buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
	buf->buf = mandoc_realloc(buf->buf, buf->sz);
}

static void
free_buf_list(struct buf *buf)
{
	struct buf *tmp;

while (buf != NULL) {
		tmp = buf;
		buf = tmp->next;
		free(tmp->buf);
		free(tmp);
	}
}

static void
choose_parser(struct mparse *curp)
{
	char		*cp, *ep;
	int		 format;

/*
	 * If neither command line arguments -mdoc or -man select
	 * a parser nor the roff parser found a .Dd or .TH macro
	 * yet, look ahead in the main input buffer.
	 */

if ((format = roff_getformat(curp->roff)) == 0) {
		cp = curp->primary->buf;
		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;
			cp++;
		}
	}

if (format == MPARSE_MDOC) {
		curp->man->meta.macroset = MACROSET_MDOC;
		if (curp->man->mdocmac == NULL)
			curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);
	} else {
		curp->man->meta.macroset = MACROSET_MAN;
		if (curp->man->manmac == NULL)
			curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);
	}
	curp->man->meta.first->tok = TOKEN_NONE;
}

/*
 * Main parse routine for a buffer.
 * It assumes encoding and line numbering are already set up.
 * It can recurse directly (for invocations of user-defined
 * macros, inline equations, and input line traps)
 * and indirectly (for .so file inclusion).
 */
static int
mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)
{
	struct buf	 ln;
	struct buf	*firstln, *lastln, *thisln, *loop;
	char		*cp;
	size_t		 pos; /* byte number in the ln buffer */
	int		 line_result, result;
	int		 of;
	int		 lnn; /* line number in the real file */
	int		 fd;
	int		 inloop; /* Saw .while on this level. */
	unsigned char	 c;

ln.sz = 256;
	ln.buf = mandoc_malloc(ln.sz);
	ln.next = NULL;
	firstln = lastln = loop = NULL;
	lnn = curp->line;
	pos = 0;
	inloop = 0;
	result = ROFF_CONT;

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

/*
			 * When finding an unescaped newline character,
			 * leave the character loop to process the line.
			 * Skip a preceding carriage return, if any.
			 */

if ('\r' == blk.buf[i] && i + 1 < blk.sz &&
			    '\n' == blk.buf[i + 1])
				++i;
			if ('\n' == blk.buf[i]) {
				++i;
				++lnn;
				break;
			}

/*
			 * Make sure we have space for the worst
			 * case of 12 bytes: "\\[u10ffff]\n\0"
			 */

if (pos + 12 > ln.sz)
				resize_buf(&ln, 256);

/*
			 * Encode 8-bit input.
			 */

c = blk.buf[i];
			if (c & 0x80) {
				if ( ! (curp->filenc && preconv_encode(
				    &blk, &i, &ln, &pos, &curp->filenc))) {
					mandoc_msg(MANDOCERR_CHAR_BAD,
					    curp->line, pos, "0x%x", c);
					ln.buf[pos++] = '?';
					i++;
				}
				continue;
			}

/*
			 * Exclude control characters.
			 */

if (c == 0x7f || (c < 0x20 && c != 0x09)) {
				mandoc_msg(c == 0x00 || c == 0x04 ||
				    c > 0x0a ? MANDOCERR_CHAR_BAD :
				    MANDOCERR_CHAR_UNSUPP,
				    curp->line, pos, "0x%x", c);
				i++;
				if (c != '\r')
					ln.buf[pos++] = '?';
				continue;
			}

ln.buf[pos++] = blk.buf[i++];
		}
		ln.buf[pos] = '\0';

/*
		 * Maintain a lookaside buffer of all lines.
		 * parsed from this input source.
		 */

thisln = mandoc_malloc(sizeof(*thisln));
		thisln->buf = mandoc_strdup(ln.buf);
		thisln->sz = strlen(ln.buf) + 1;
		thisln->next = NULL;
		if (firstln == NULL) {
			firstln = lastln = thisln;
			if (curp->secondary == NULL)
				curp->secondary = firstln;
		} else {
			lastln->next = thisln;
			lastln = thisln;
		}

/* XXX Ugly hack to mark the end of the input. */

if (i == blk.sz || blk.buf[i] == '\0') {
			if (pos + 2 > ln.sz)
				resize_buf(&ln, 256);
			ln.buf[pos++] = '\n';
			ln.buf[pos] = '\0';
		}

/*
		 * A significant amount of complexity is contained by
		 * the roff preprocessor.  It's line-oriented but can be
		 * expressed on one line, so we need at times to
		 * readjust our starting point and re-run it.  The roff
		 * preprocessor can also readjust the buffers with new
		 * data, so we pass them in wholesale.
		 */

of = 0;
rerun:
		line_result = roff_parseln(curp->roff, curp->line, &ln, &of);

/* Process options. */

if (line_result & ROFF_APPEND)
			assert(line_result == (ROFF_IGN | ROFF_APPEND));

if (line_result & ROFF_USERCALL)
			assert((line_result & ROFF_MASK) == ROFF_REPARSE);

if (line_result & ROFF_USERRET) {
			assert(line_result == (ROFF_IGN | ROFF_USERRET));
			if (start == 0) {
				/* Return from the current macro. */
				result = ROFF_USERRET;
				goto out;
			}
		}

switch (line_result & ROFF_LOOPMASK) {
		case ROFF_IGN:
			break;
		case ROFF_WHILE:
			if (curp->loop != NULL) {
				if (loop == curp->loop)
					break;
				mandoc_msg(MANDOCERR_WHILE_NEST,
				    curp->line, pos, NULL);
			}
			curp->loop = thisln;
			loop = NULL;
			inloop = 1;
			break;
		case ROFF_LOOPCONT:
		case ROFF_LOOPEXIT:
			if (curp->loop == NULL) {
				mandoc_msg(MANDOCERR_WHILE_FAIL,
				    curp->line, pos, NULL);
				break;
			}
			if (inloop == 0) {
				mandoc_msg(MANDOCERR_WHILE_INTO,
				    curp->line, pos, NULL);
				curp->loop = loop = NULL;
				break;
			}
			if (line_result & ROFF_LOOPCONT)
				loop = curp->loop;
			else {
				curp->loop = loop = NULL;
				inloop = 0;
			}
			break;
		default:
			abort();
		}

/* Process the main instruction from the roff parser. */

switch (line_result & ROFF_MASK) {
		case ROFF_IGN:
			break;
		case ROFF_CONT:
			if (curp->man->meta.macroset == MACROSET_NONE)
				choose_parser(curp);
			if ((curp->man->meta.macroset == MACROSET_MDOC ?
			     mdoc_parseln(curp->man, curp->line, ln.buf, of) :
			     man_parseln(curp->man, curp->line, ln.buf, of)
			    ) == 2)
				goto out;
			break;
		case ROFF_RERUN:
			goto rerun;
		case ROFF_REPARSE:
			if (++curp->reparse_count > REPARSE_LIMIT) {
				/* Abort and return to the top level. */
				result = ROFF_IGN;
				mandoc_msg(MANDOCERR_ROFFLOOP,
				    curp->line, pos, NULL);
				goto out;
			}
			result = mparse_buf_r(curp, ln, of, 0);
			if (line_result & ROFF_USERCALL) {
				roff_userret(curp->roff);
				/* Continue normally. */
				if (result & ROFF_USERRET)
					result = ROFF_CONT;
			}
			if (start == 0 && result != ROFF_CONT)
				goto out;
			break;
		case ROFF_SO:
			if ( ! (curp->options & MPARSE_SO) &&
			    (i >= blk.sz || blk.buf[i] == '\0')) {
				curp->man->meta.sodest =
				    mandoc_strdup(ln.buf + of);
				goto out;
			}
			if ((fd = mparse_open(curp, ln.buf + of)) != -1) {
				mparse_readfd(curp, fd, ln.buf + of);
				close(fd);
			} else {
				mandoc_msg(MANDOCERR_SO_FAIL,
				    curp->line, of, ".so %s: %s",
				    ln.buf + of, strerror(errno));
				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);
			}
			break;
		default:
			abort();
		}

/* Start the next input line. */

if (loop != NULL &&
		    (line_result & ROFF_LOOPMASK) == ROFF_IGN)
			loop = loop->next;

if (loop != NULL) {
			if ((line_result & ROFF_APPEND) == 0)
				*ln.buf = '\0';
			if (ln.sz < loop->sz)
				resize_buf(&ln, loop->sz);
			(void)strlcat(ln.buf, loop->buf, ln.sz);
			of = 0;
			goto rerun;
		}

pos = (line_result & ROFF_APPEND) ? strlen(ln.buf) : 0;
	}
out:
	if (inloop) {
		if (result != ROFF_USERRET)
			mandoc_msg(MANDOCERR_WHILE_OUTOF,
			    curp->line, pos, NULL);
		curp->loop = NULL;
	}
	free(ln.buf);
	if (firstln != curp->secondary)
		free_buf_list(firstln);
	return result;
}

static int
read_whole_file(struct mparse *curp, int fd, struct buf *fb, int *with_mmap)
{
	struct stat	 st;
	gzFile		 gz;
	size_t		 off;
	ssize_t		 ssz;
	int		 gzerrnum, retval;

if (fstat(fd, &st) == -1) {
		mandoc_msg(MANDOCERR_FSTAT, 0, 0, "%s", strerror(errno));
		return -1;
	}

/*
	 * If we're a regular file, try just reading in the whole entry
	 * via mmap().  This is faster than reading it into blocks, and
	 * since each file is only a few bytes to begin with, I'm not
	 * concerned that this is going to tank any machines.
	 */

if (curp->gzip == 0 && S_ISREG(st.st_mode)) {
		if (st.st_size > 0x7fffffff) {
			mandoc_msg(MANDOCERR_TOOLARGE, 0, 0, NULL);
			return -1;
		}
		*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 0;
	}

if (curp->gzip) {
		/*
		 * Duplicating the file descriptor is required
		 * because we will have to call gzclose(3)
		 * to free memory used internally by zlib,
		 * but that will also close the file descriptor,
		 * which this function must not do.
		 */
		if ((fd = dup(fd)) == -1) {
			mandoc_msg(MANDOCERR_DUP, 0, 0,
			    "%s", strerror(errno));
			return -1;
		}
		if ((gz = gzdopen(fd, "rb")) == NULL) {
			mandoc_msg(MANDOCERR_GZDOPEN, 0, 0,
			    "%s", strerror(errno));
			close(fd);
			return -1;
		}
	} 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.
	 */

*with_mmap = 0;
	off = 0;
	retval = -1;
	fb->sz = 0;
	fb->buf = NULL;
	for (;;) {
		if (off == fb->sz) {
			if (fb->sz == (1U << 31)) {
				mandoc_msg(MANDOCERR_TOOLARGE, 0, 0, NULL);
				break;
			}
			resize_buf(fb, 65536);
		}
		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;
			retval = 0;
			break;
		}
		if (ssz == -1) {
			if (curp->gzip)
				(void)gzerror(gz, &gzerrnum);
			mandoc_msg(MANDOCERR_READ, 0, 0, "%s",
			    curp->gzip && gzerrnum != Z_ERRNO ?
			    zError(gzerrnum) : strerror(errno));
			break;
		}
		off += (size_t)ssz;
	}

if (curp->gzip && (gzerrnum = gzclose(gz)) != Z_OK)
		mandoc_msg(MANDOCERR_GZCLOSE, 0, 0, "%s",
		    gzerrnum == Z_ERRNO ? strerror(errno) :
		    zError(gzerrnum));
	if (retval == -1) {
		free(fb->buf);
		fb->buf = NULL;
	}
	return retval;
}

static void
mparse_end(struct mparse *curp)
{
	if (curp->man->meta.macroset == MACROSET_NONE)
		curp->man->meta.macroset = MACROSET_MAN;
	if (curp->man->meta.macroset == MACROSET_MDOC)
		mdoc_endparse(curp->man);
	else
		man_endparse(curp->man);
	roff_endparse(curp->roff);
}

/*
 * Read the whole file into memory and call the parsers.
 * Called recursively when an .so request is encountered.
 */
void
mparse_readfd(struct mparse *curp, int fd, const char *filename)
{
	static int	 recursion_depth;

struct buf	 blk;
	struct buf	*save_primary;
	const char	*save_filename;
	size_t		 offset;
	int		 save_filenc, save_lineno;
	int		 with_mmap;

if (recursion_depth > 64) {
		mandoc_msg(MANDOCERR_ROFFLOOP, curp->line, 0, NULL);
		return;
	}
	if (read_whole_file(curp, fd, &blk, &with_mmap) == -1)
		return;

/*
	 * Save some properties of the parent file.
	 */

save_primary = curp->primary;
	save_filenc = curp->filenc;
	save_lineno = curp->line;
	save_filename = mandoc_msg_getinfilename();

curp->primary = &blk;
	curp->filenc = curp->options & (MPARSE_UTF8 | MPARSE_LATIN1);
	curp->line = 1;
	mandoc_msg_setinfilename(filename);

/* 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;

recursion_depth++;
	mparse_buf_r(curp, blk, offset, 1);
	if (--recursion_depth == 0)
		mparse_end(curp);

/*
	 * Clean up and restore saved parent properties.
	 */

if (with_mmap)
		munmap(blk.buf, blk.sz);
	else
		free(blk.buf);

curp->primary = save_primary;
	curp->filenc = save_filenc;
	curp->line = save_lineno;
	if (save_filename != NULL)
		mandoc_msg_setinfilename(save_filename);
}

int
mparse_open(struct mparse *curp, const char *file)
{
	char		 *cp;
	int		  fd, save_errno;

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

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

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

/*
	 * If that doesn't work and the filename doesn't
	 * already  end in .gz, try appending .gz.
	 */

if ( ! curp->gzip) {
		save_errno = errno;
		mandoc_asprintf(&cp, "%s.gz", file);
		fd = open(cp, O_RDONLY);
		free(cp);
		errno = save_errno;
		if (fd != -1) {
			curp->gzip = 1;
			return fd;
		}
	}

/* Neither worked, give up. */

return -1;
}

struct mparse *
mparse_alloc(int options, enum mandoc_os os_e, const char *os_s)
{
	struct mparse	*curp;

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

curp->options = options;
	curp->os_s = os_s;

curp->roff = roff_alloc(options);
	curp->man = roff_man_alloc(curp->roff, curp->os_s,
		curp->options & MPARSE_QUICK ? 1 : 0);
	if (curp->options & MPARSE_MDOC) {
		curp->man->meta.macroset = MACROSET_MDOC;
		if (curp->man->mdocmac == NULL)
			curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);
	} else if (curp->options & MPARSE_MAN) {
		curp->man->meta.macroset = MACROSET_MAN;
		if (curp->man->manmac == NULL)
			curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);
	}
	curp->man->meta.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);
	free_buf_list(curp->secondary);
	curp->secondary = NULL;
	curp->gzip = 0;
}

void
mparse_free(struct mparse *curp)
{
	roffhash_free(curp->man->mdocmac);
	roffhash_free(curp->man->manmac);
	roff_man_free(curp->man);
	roff_free(curp->roff);
	free_buf_list(curp->secondary);
	free(curp);
}

struct roff_meta *
mparse_result(struct mparse *curp)
{
	roff_state_reset(curp->man);
	if (curp->options & MPARSE_VALIDATE) {
		if (curp->man->meta.macroset == MACROSET_MDOC)
			mdoc_validate(curp->man);
		else
			man_validate(curp->man);
	}
	return &curp->man->meta;
}

void
mparse_copy(const struct mparse *p)
{
	struct buf	*buf;

for (buf = p->secondary; buf != NULL; buf = buf->next)
		puts(buf->buf);
}

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