Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
lowdown/main.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
606 lines (536 sloc)
17.3 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* $Id$ */ | |
/* | |
* Copyright (c) 2016, 2017, 2020 Kristaps Dzonsons <kristaps@bsd.lv> | |
* | |
* 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 | |
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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" | |
#if HAVE_SYS_QUEUE | |
# include <sys/queue.h> | |
#endif | |
#include <sys/param.h> | |
#if HAVE_CAPSICUM | |
# include <sys/resource.h> | |
# include <sys/capsicum.h> | |
#endif | |
#include <sys/ioctl.h> | |
#include <sys/stat.h> | |
#include <assert.h> | |
#if HAVE_ERR | |
# include <err.h> | |
#endif | |
#include <errno.h> | |
#include <fcntl.h> | |
#include <getopt.h> | |
#include <limits.h> /* INT_MAX */ | |
#include <locale.h> /* set_locale() */ | |
#if HAVE_SANDBOX_INIT | |
# include <sandbox.h> | |
#endif | |
#include <stdio.h> | |
#include <stdint.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <termios.h> /* struct winsize */ | |
#include <unistd.h> | |
#include "lowdown.h" | |
/* | |
* Start with all of the sandboxes. | |
* The sandbox_pre() happens before we open our input file for reading, | |
* while the sandbox_post() happens afterward. | |
*/ | |
#if HAVE_PLEDGE | |
static void | |
sandbox_post(int fdin, int fddin, int fdout) | |
{ | |
if (pledge("stdio", NULL) == -1) | |
err(1, "pledge"); | |
} | |
static void | |
sandbox_pre(void) | |
{ | |
if (pledge("stdio rpath wpath cpath", NULL) == -1) | |
err(1, "pledge"); | |
} | |
#elif HAVE_SANDBOX_INIT | |
static void | |
sandbox_post(int fdin, int fddin, int fdout) | |
{ | |
char *ep; | |
int rc; | |
rc = sandbox_init | |
(kSBXProfilePureComputation, | |
SANDBOX_NAMED, &ep); | |
if (rc != 0) | |
errx(1, "sandbox_init: %s", ep); | |
} | |
static void | |
sandbox_pre(void) | |
{ | |
/* Do nothing. */ | |
} | |
#elif HAVE_CAPSICUM | |
static void | |
sandbox_post(int fdin, int fddin, int fdout) | |
{ | |
cap_rights_t rights; | |
cap_rights_init(&rights); | |
cap_rights_init(&rights, CAP_EVENT, CAP_READ, CAP_FSTAT); | |
if (cap_rights_limit(fdin, &rights) < 0) | |
err(1, "cap_rights_limit"); | |
if (fddin != -1) { | |
cap_rights_init(&rights, | |
CAP_EVENT, CAP_READ, CAP_FSTAT); | |
if (cap_rights_limit(fddin, &rights) < 0) | |
err(1, "cap_rights_limit"); | |
} | |
cap_rights_init(&rights, CAP_EVENT, CAP_WRITE, CAP_FSTAT); | |
if (cap_rights_limit(STDERR_FILENO, &rights) < 0) | |
err(1, "cap_rights_limit"); | |
cap_rights_init(&rights, CAP_EVENT, CAP_WRITE, CAP_FSTAT); | |
if (cap_rights_limit(fdout, &rights) < 0) | |
err(1, "cap_rights_limit"); | |
if (cap_enter()) | |
err(1, "cap_enter"); | |
} | |
static void | |
sandbox_pre(void) | |
{ | |
/* Do nothing. */ | |
} | |
#else /* No sandbox. */ | |
#warning Compiling without sandbox support. | |
static void | |
sandbox_post(int fdin, int fddin, int fdout) | |
{ | |
/* Do nothing. */ | |
} | |
static void | |
sandbox_pre(void) | |
{ | |
/* Do nothing. */ | |
} | |
#endif | |
static size_t | |
get_columns(void) | |
{ | |
struct winsize size; | |
memset(&size, 0, sizeof(struct winsize)); | |
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &size) == -1) | |
return 72; | |
return size.ws_col; | |
} | |
/* | |
* Recognise the metadata format of "foo = bar" and "foo: bar". | |
* Translates from the former into the latter. | |
* This way "foo = : bar" -> "foo : : bar", etc. | |
* Errors out if the metadata is malformed (no colon or equal sign). | |
*/ | |
static void | |
metadata_parse(char opt, char ***vals, size_t *valsz, const char *arg) | |
{ | |
const char *loceq, *loccol; | |
char *cp; | |
loceq = strchr(arg, '='); | |
loccol = strchr(arg, ':'); | |
if ((loceq != NULL && loccol == NULL) || | |
(loceq != NULL && loccol != NULL && loceq < loccol)) { | |
if (asprintf(&cp, "%.*s: %s\n", | |
(int)(loceq - arg), arg, loceq + 1) == -1) | |
err(1, NULL); | |
*vals = reallocarray(*vals, *valsz + 1, sizeof(char *)); | |
if (*vals == NULL) | |
err(1, NULL); | |
(*vals)[*valsz] = cp; | |
(*valsz)++; | |
return; | |
} | |
if ((loccol != NULL && loceq == NULL) || | |
(loccol != NULL && loceq != NULL && loccol < loceq)) { | |
if (asprintf(&cp, "%s\n", arg) == -1) | |
err(1, NULL); | |
*vals = reallocarray(*vals, *valsz + 1, sizeof(char *)); | |
if (*vals == NULL) | |
err(1, NULL); | |
(*vals)[*valsz] = cp; | |
(*valsz)++; | |
return; | |
} | |
errx(1, "-%c: malformed metadata", opt); | |
} | |
int | |
main(int argc, char *argv[]) | |
{ | |
FILE *fin = stdin, *fout = stdout, | |
*din = NULL; | |
const char *fnin = "<stdin>", *fnout = NULL, | |
*fndin = NULL, *extract = NULL, *er, | |
*mainopts = "M:m:sT:t:o:X:", | |
*diffopts = "M:m:sT:t:o:", *odtstyfn = NULL; | |
struct lowdown_opts opts; | |
struct stat st; | |
int c, diff = 0, fd, | |
status = 0, aoflag = 0, roflag = 0, | |
aiflag = 0, riflag = 0, centre = 0; | |
char *ret = NULL, *cp, *odtsty = NULL; | |
size_t i, retsz = 0, rcols, sz; | |
ssize_t ssz; | |
struct lowdown_meta *m; | |
struct lowdown_metaq mq; | |
struct option lo[] = { | |
{ "html-skiphtml", no_argument, &aoflag, LOWDOWN_HTML_SKIP_HTML }, | |
{ "html-no-skiphtml", no_argument, &roflag, LOWDOWN_HTML_SKIP_HTML }, | |
{ "html-escapehtml", no_argument, &aoflag, LOWDOWN_HTML_ESCAPE }, | |
{ "html-no-escapehtml", no_argument, &roflag, LOWDOWN_HTML_ESCAPE }, | |
{ "html-hardwrap", no_argument, &aoflag, LOWDOWN_HTML_HARD_WRAP }, | |
{ "html-no-hardwrap", no_argument, &roflag, LOWDOWN_HTML_HARD_WRAP }, | |
{ "html-head-ids", no_argument, &aoflag, LOWDOWN_HTML_HEAD_IDS }, | |
{ "html-no-head-ids", no_argument, &roflag, LOWDOWN_HTML_HEAD_IDS }, | |
{ "html-owasp", no_argument, &aoflag, LOWDOWN_HTML_OWASP }, | |
{ "html-no-owasp", no_argument, &roflag, LOWDOWN_HTML_OWASP }, | |
{ "html-num-ent", no_argument, &aoflag, LOWDOWN_HTML_NUM_ENT }, | |
{ "html-no-num-ent", no_argument, &roflag, LOWDOWN_HTML_NUM_ENT }, | |
{ "latex-numbered", no_argument, &aoflag, LOWDOWN_LATEX_NUMBERED }, | |
{ "latex-no-numbered", no_argument, &roflag, LOWDOWN_LATEX_NUMBERED }, | |
{ "latex-skiphtml", no_argument, &aoflag, LOWDOWN_LATEX_SKIP_HTML }, | |
{ "latex-no-skiphtml", no_argument, &roflag, LOWDOWN_LATEX_SKIP_HTML }, | |
{ "nroff-skiphtml", no_argument, &aoflag, LOWDOWN_NROFF_SKIP_HTML }, | |
{ "nroff-no-skiphtml", no_argument, &roflag, LOWDOWN_NROFF_SKIP_HTML }, | |
{ "nroff-groff", no_argument, &aoflag, LOWDOWN_NROFF_GROFF }, | |
{ "nroff-no-groff", no_argument, &roflag, LOWDOWN_NROFF_GROFF }, | |
{ "nroff-numbered", no_argument, &aoflag, LOWDOWN_NROFF_NUMBERED }, | |
{ "nroff-no-numbered", no_argument, &roflag, LOWDOWN_NROFF_NUMBERED }, | |
{ "nroff-shortlinks", no_argument, &aoflag, LOWDOWN_NROFF_SHORTLINK }, | |
{ "nroff-no-shortlinks",no_argument, &roflag, LOWDOWN_NROFF_SHORTLINK }, | |
{ "nroff-nolinks", no_argument, &aoflag, LOWDOWN_NROFF_NOLINK }, | |
{ "nroff-no-nolinks", no_argument, &roflag, LOWDOWN_NROFF_NOLINK }, | |
{ "odt-skiphtml", no_argument, &aoflag, LOWDOWN_ODT_SKIP_HTML }, | |
{ "odt-no-skiphtml", no_argument, &roflag, LOWDOWN_ODT_SKIP_HTML }, | |
{ "odt-style", required_argument, NULL, 6 }, | |
{ "term-width", required_argument, NULL, 1 }, | |
{ "term-hmargin", required_argument, NULL, 2 }, | |
{ "term-vmargin", required_argument, NULL, 3 }, | |
{ "term-columns", required_argument, NULL, 4 }, | |
{ "gemini-link-end", no_argument, &aoflag, LOWDOWN_GEMINI_LINK_END }, | |
{ "gemini-no-link-end", no_argument, &roflag, LOWDOWN_GEMINI_LINK_END }, | |
{ "gemini-link-roman", no_argument, &aoflag, LOWDOWN_GEMINI_LINK_ROMAN }, | |
{ "gemini-no-link-roman", no_argument, &roflag, LOWDOWN_GEMINI_LINK_ROMAN }, | |
{ "gemini-link-noref", no_argument, &aoflag, LOWDOWN_GEMINI_LINK_NOREF }, | |
{ "gemini-no-link-noref", no_argument, &roflag, LOWDOWN_GEMINI_LINK_NOREF }, | |
{ "gemini-link-inline", no_argument, &aoflag, LOWDOWN_GEMINI_LINK_IN }, | |
{ "gemini-no-link-inline",no_argument, &roflag, LOWDOWN_GEMINI_LINK_IN }, | |
{ "gemini-metadata", no_argument, &aoflag, LOWDOWN_GEMINI_METADATA }, | |
{ "gemini-no-metadata", no_argument, &roflag, LOWDOWN_GEMINI_METADATA }, | |
{ "term-shortlinks", no_argument, &aoflag, LOWDOWN_TERM_SHORTLINK }, | |
{ "term-no-shortlinks", no_argument, &roflag, LOWDOWN_TERM_SHORTLINK }, | |
{ "term-nolinks", no_argument, &aoflag, LOWDOWN_TERM_NOLINK }, | |
{ "term-no-nolinks", no_argument, &roflag, LOWDOWN_TERM_NOLINK }, | |
{ "term-no-colour", no_argument, &aoflag, LOWDOWN_TERM_NOCOLOUR }, | |
{ "term-colour", no_argument, &roflag, LOWDOWN_TERM_NOCOLOUR }, | |
{ "term-no-ansi", no_argument, &aoflag, LOWDOWN_TERM_NOANSI }, | |
{ "term-ansi", no_argument, &roflag, LOWDOWN_TERM_NOANSI }, | |
{ "out-smarty", no_argument, &aoflag, LOWDOWN_SMARTY }, | |
{ "out-no-smarty", no_argument, &roflag, LOWDOWN_SMARTY }, | |
{ "out-standalone", no_argument, &aoflag, LOWDOWN_STANDALONE }, | |
{ "out-no-standalone", no_argument, &roflag, LOWDOWN_STANDALONE }, | |
{ "parse-hilite", no_argument, &aiflag, LOWDOWN_HILITE }, | |
{ "parse-no-hilite", no_argument, &riflag, LOWDOWN_HILITE }, | |
{ "parse-tables", no_argument, &aiflag, LOWDOWN_TABLES }, | |
{ "parse-no-tables", no_argument, &riflag, LOWDOWN_TABLES }, | |
{ "parse-fenced", no_argument, &aiflag, LOWDOWN_FENCED }, | |
{ "parse-no-fenced", no_argument, &riflag, LOWDOWN_FENCED }, | |
{ "parse-footnotes", no_argument, &aiflag, LOWDOWN_FOOTNOTES }, | |
{ "parse-no-footnotes", no_argument, &riflag, LOWDOWN_FOOTNOTES }, | |
{ "parse-autolink", no_argument, &aiflag, LOWDOWN_AUTOLINK }, | |
{ "parse-no-autolink", no_argument, &riflag, LOWDOWN_AUTOLINK }, | |
{ "parse-strike", no_argument, &aiflag, LOWDOWN_STRIKE }, | |
{ "parse-no-strike", no_argument, &riflag, LOWDOWN_STRIKE }, | |
{ "parse-super", no_argument, &aiflag, LOWDOWN_SUPER }, | |
{ "parse-no-super", no_argument, &riflag, LOWDOWN_SUPER }, | |
{ "parse-math", no_argument, &aiflag, LOWDOWN_MATH }, | |
{ "parse-no-math", no_argument, &riflag, LOWDOWN_MATH }, | |
{ "parse-codeindent", no_argument, &riflag, LOWDOWN_NOCODEIND }, | |
{ "parse-no-codeindent",no_argument, &aiflag, LOWDOWN_NOCODEIND }, | |
{ "parse-intraemph", no_argument, &riflag, LOWDOWN_NOINTEM }, | |
{ "parse-no-intraemph", no_argument, &aiflag, LOWDOWN_NOINTEM }, | |
{ "parse-metadata", no_argument, &aiflag, LOWDOWN_METADATA }, | |
{ "parse-no-metadata", no_argument, &riflag, LOWDOWN_METADATA }, | |
{ "parse-cmark", no_argument, &aiflag, LOWDOWN_COMMONMARK }, | |
{ "parse-no-cmark", no_argument, &riflag, LOWDOWN_COMMONMARK }, | |
{ "parse-deflists", no_argument, &aiflag, LOWDOWN_DEFLIST }, | |
{ "parse-no-deflists", no_argument, &riflag, LOWDOWN_DEFLIST }, | |
{ "parse-img-ext", no_argument, &aiflag, LOWDOWN_IMG_EXT }, /* TODO: remove */ | |
{ "parse-no-img-ext", no_argument, &riflag, LOWDOWN_IMG_EXT }, /* TODO: remove */ | |
{ "parse-ext-attrs", no_argument, &aiflag, LOWDOWN_ATTRS }, | |
{ "parse-no-ext-attrs", no_argument, &riflag, LOWDOWN_ATTRS }, | |
{ "parse-tasklists", no_argument, &aiflag, LOWDOWN_TASKLIST }, | |
{ "parse-no-tasklists", no_argument, &riflag, LOWDOWN_TASKLIST }, | |
{ "parse-maxdepth", required_argument, NULL, 5 }, | |
{ NULL, 0, NULL, 0 } | |
}; | |
/* Get the real number of columns or 72. */ | |
rcols = get_columns(); | |
sandbox_pre(); | |
TAILQ_INIT(&mq); | |
memset(&opts, 0, sizeof(struct lowdown_opts)); | |
opts.maxdepth = 128; | |
opts.type = LOWDOWN_HTML; | |
opts.feat = | |
LOWDOWN_ATTRS | | |
LOWDOWN_AUTOLINK | | |
LOWDOWN_COMMONMARK | | |
LOWDOWN_DEFLIST | | |
LOWDOWN_FENCED | | |
LOWDOWN_FOOTNOTES | | |
LOWDOWN_METADATA | | |
LOWDOWN_STRIKE | | |
LOWDOWN_SUPER | | |
LOWDOWN_TABLES | | |
LOWDOWN_TASKLIST; | |
opts.oflags = | |
LOWDOWN_HTML_ESCAPE | | |
LOWDOWN_HTML_HEAD_IDS | | |
LOWDOWN_HTML_NUM_ENT | | |
LOWDOWN_HTML_OWASP | | |
LOWDOWN_HTML_SKIP_HTML | | |
LOWDOWN_NROFF_GROFF | | |
LOWDOWN_NROFF_NUMBERED | | |
LOWDOWN_NROFF_SKIP_HTML | | |
LOWDOWN_ODT_SKIP_HTML | | |
LOWDOWN_LATEX_SKIP_HTML | | |
LOWDOWN_LATEX_NUMBERED | | |
LOWDOWN_SMARTY; | |
if (strcasecmp(getprogname(), "lowdown-diff") == 0) | |
diff = 1; | |
while ((c = getopt_long(argc, argv, | |
diff ? diffopts : mainopts, lo, NULL)) != -1) | |
switch (c) { | |
case 'M': | |
metadata_parse(c, &opts.metaovr, | |
&opts.metaovrsz, optarg); | |
break; | |
case 'm': | |
metadata_parse(c, &opts.meta, | |
&opts.metasz, optarg); | |
break; | |
case 'o': | |
fnout = optarg; | |
break; | |
case 's': | |
opts.oflags |= LOWDOWN_STANDALONE; | |
break; | |
case 't': | |
case 'T': | |
if (strcasecmp(optarg, "ms") == 0) | |
opts.type = LOWDOWN_NROFF; | |
else if (strcasecmp(optarg, "gemini") == 0) | |
opts.type = LOWDOWN_GEMINI; | |
else if (strcasecmp(optarg, "html") == 0) | |
opts.type = LOWDOWN_HTML; | |
else if (strcasecmp(optarg, "latex") == 0) | |
opts.type = LOWDOWN_LATEX; | |
else if (strcasecmp(optarg, "man") == 0) | |
opts.type = LOWDOWN_MAN; | |
else if (strcasecmp(optarg, "fodt") == 0) | |
opts.type = LOWDOWN_FODT; | |
else if (strcasecmp(optarg, "term") == 0) | |
opts.type = LOWDOWN_TERM; | |
else if (strcasecmp(optarg, "tree") == 0) | |
opts.type = LOWDOWN_TREE; | |
else if (strcasecmp(optarg, "null") == 0) | |
opts.type = LOWDOWN_NULL; | |
else | |
goto usage; | |
break; | |
case 'X': | |
extract = optarg; | |
break; | |
case 0: | |
if (roflag) | |
opts.oflags &= ~roflag; | |
if (aoflag) | |
opts.oflags |= aoflag; | |
if (riflag) | |
opts.feat &= ~riflag; | |
if (aiflag) | |
opts.feat |= aiflag; | |
break; | |
case 1: | |
opts.cols = strtonum(optarg, 0, INT_MAX, &er); | |
if (er == NULL) | |
break; | |
errx(1, "--term-width: %s", er); | |
case 2: | |
if (strcmp(optarg, "centre") == 0 || | |
strcmp(optarg, "centre") == 0) { | |
centre = 1; | |
break; | |
} | |
opts.hmargin = strtonum | |
(optarg, 0, INT_MAX, &er); | |
if (er == NULL) | |
break; | |
errx(1, "--term-hmargin: %s", er); | |
case 3: | |
opts.vmargin = strtonum(optarg, 0, INT_MAX, &er); | |
if (er == NULL) | |
break; | |
errx(1, "--term-vmargin: %s", er); | |
case 4: | |
rcols = strtonum(optarg, 1, INT_MAX, &er); | |
if (er == NULL) | |
break; | |
errx(1, "--term-columns: %s", er); | |
case 5: | |
opts.maxdepth = strtonum(optarg, 0, INT_MAX, &er); | |
if (er == NULL) | |
break; | |
errx(1, "--parse-maxdepth: %s", er); | |
case 6: | |
odtstyfn = optarg; | |
break; | |
default: | |
goto usage; | |
} | |
argc -= optind; | |
argv += optind; | |
if (opts.type == LOWDOWN_TERM || | |
opts.type == LOWDOWN_GEMINI) | |
setlocale(LC_CTYPE, ""); | |
/* | |
* By default, try to show 80 columns. | |
* Don't show more than the number of available columns. | |
*/ | |
if (opts.cols == 0) { | |
if ((opts.cols = rcols) > 80) | |
opts.cols = 80; | |
} else if (opts.cols > rcols) | |
opts.cols = rcols; | |
/* If we're centred, set our margins. */ | |
if (centre && opts.cols < rcols) | |
opts.hmargin = (rcols - opts.cols) / 2; | |
/* | |
* Diff mode takes two arguments: the first is mandatory (the | |
* old file) and the second (the new one) is optional. | |
* Non-diff mode takes an optional single argument. | |
*/ | |
if ((diff && (argc == 0 || argc > 2)) || (!diff && argc > 1)) | |
goto usage; | |
if (diff) { | |
if (argc > 1 && strcmp(argv[1], "-")) { | |
fnin = argv[1]; | |
if ((fin = fopen(fnin, "r")) == NULL) | |
err(1, "%s", fnin); | |
} | |
fndin = argv[0]; | |
if ((din = fopen(fndin, "r")) == NULL) | |
err(1, "%s", fndin); | |
} else { | |
if (argc && strcmp(argv[0], "-")) { | |
fnin = argv[0]; | |
if ((fin = fopen(fnin, "r")) == NULL) | |
err(1, "%s", fnin); | |
} | |
} | |
/* | |
* If we have a style sheet specified for -Tfodt, load it now | |
* before we drop privileges. | |
*/ | |
if (opts.type == LOWDOWN_FODT && odtstyfn != NULL) { | |
if ((fd = open(odtstyfn, O_RDONLY)) == -1) | |
err(1, "%s", odtstyfn); | |
if (fstat(fd, &st) == -1) | |
err(1, "%s", odtstyfn); | |
if ((uint64_t)st.st_size > SIZE_MAX - 1) | |
errx(1, "%s: file too long", odtstyfn); | |
sz = (size_t)st.st_size; | |
if ((odtsty = cp = malloc(sz + 1)) == NULL) | |
err(1, NULL); | |
while (sz > 0) { | |
if ((ssz = read(fd, cp, sz)) == -1) | |
err(1, "%s", odtstyfn); | |
if (ssz == 0) | |
errx(1, "%s: short file", odtstyfn); | |
sz -= (size_t)ssz; | |
cp += ssz; | |
} | |
*cp = '\0'; | |
close(fd); | |
opts.odt.sty = odtsty; | |
} | |
/* Configure the output file. */ | |
if (fnout != NULL && strcmp(fnout, "-") && | |
(fout = fopen(fnout, "w")) == NULL) | |
err(1, "%s", fnout); | |
sandbox_post(fileno(fin), din == NULL ? | |
-1 : fileno(din), fileno(fout)); | |
/* We're now completely sandboxed. */ | |
/* Require metadata when extracting. */ | |
if (extract) | |
opts.feat |= LOWDOWN_METADATA; | |
/* | |
* Allow NO_COLOUR to dictate colours. | |
* This only works for -Tterm output when not in diff mode. | |
*/ | |
if (getenv("NO_COLOR") != NULL || | |
getenv("NO_COLOUR") != NULL) | |
opts.oflags |= LOWDOWN_TERM_NOCOLOUR; | |
if (diff) { | |
opts.oflags &= ~LOWDOWN_TERM_NOCOLOUR; | |
if (!lowdown_file_diff | |
(&opts, fin, din, &ret, &retsz)) | |
errx(1, "%s: failed parse", fnin); | |
} else { | |
if (!lowdown_file(&opts, fin, &ret, &retsz, &mq)) | |
errx(1, "%s: failed parse", fnin); | |
} | |
if (extract != NULL) { | |
assert(!diff); | |
TAILQ_FOREACH(m, &mq, entries) | |
if (strcasecmp(m->key, extract) == 0) | |
break; | |
if (m != NULL) { | |
fprintf(fout, "%s\n", m->value); | |
} else { | |
status = 1; | |
warnx("%s: unknown keyword", extract); | |
} | |
} else | |
fwrite(ret, 1, retsz, fout); | |
free(ret); | |
free(odtsty); | |
if (fout != stdout) | |
fclose(fout); | |
if (din != NULL) | |
fclose(din); | |
if (fin != stdin) | |
fclose(fin); | |
for (i = 0; i < opts.metasz; i++) | |
free(opts.meta[i]); | |
for (i = 0; i < opts.metaovrsz; i++) | |
free(opts.metaovr[i]); | |
free(opts.meta); | |
free(opts.metaovr); | |
lowdown_metaq_free(&mq); | |
return status; | |
usage: | |
if (!diff) { | |
fprintf(stderr, | |
"usage: lowdown [-s] [input_options] [output_options] [-M metadata]\n" | |
" [-m metadata] [-o output] [-t mode] [-X keyword] [file]\n"); | |
} else | |
fprintf(stderr, | |
"usage: lowdown-diff [-s] [input_options] [output_options] [-M metadata]\n" | |
" [-m metadata] [-o output] [-t mode] oldfile [newfile]\n"); | |
return 1; | |
} |