mandoc/main.c - diff

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Up to [cvsweb.bsd.lv] / mandoc

Diff for /mandoc/main.c between version 1.227 and 1.258

version 1.227, 2015/03/17 13:35:52

version 1.258, 2015/11/14 23:57:47

Line 8

* 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 24

#include <assert.h>

#include <ctype.h>

#if HAVE_ERR

#include <err.h>

#endif

#include <errno.h>

#include <fcntl.h>

#include <glob.h>

Line 34

Line 37

#include <string.h>

#include <unistd.h>

#include "mandoc.h"

#include "mandoc_aux.h"

#include "main.h"

#include "mandoc.h"

#include "roff.h"

#include "mdoc.h"

#include "man.h"

#include "manpath.h"

#include "tag.h"

#include "main.h"

#include "manconf.h"

#include "mansearch.h"

#if !defined(__GNUC__) || (__GNUC__ < 2)

Line 57 enum outmode {

Line 62 enum outmode {

OUTMODE_ONE

};

typedef void (*out_mdoc)(void *, const struct mdoc *);

typedef void (*out_man)(void *, const struct man *);

typedef void (*out_free)(void *);

enum outt {

OUTT_ASCII = 0, /* -Tascii */

OUTT_LOCALE, /* -Tlocale */

Line 75 enum outt {

Line 76 enum outt {

struct curparse {

struct mparse *mp;

struct mchars *mchars; /* character table */

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

int wstop; /* stop after a file with a warning */

enum outt outtype; /* which output to use */

out_mdoc outmdoc; /* mdoc output ptr */

out_man outman; /* man output ptr */

out_free outfree; /* free output ptr */

void *outdata; /* data for output */

char outopts[BUFSIZ]; /* buf of output opts */

struct manoutput *outopts; /* output options */

};

static int fs_lookup(const struct manpaths *,

Line 93 static int fs_lookup(const struct manpaths *,

Line 90 static int fs_lookup(const struct manpaths *,

static void fs_search(const struct mansearch *,

const struct manpaths *, int, char**,

struct manpage **, size_t *);

static void handle_sigpipe(int);

static int koptions(int *, char *);

#if HAVE_SQLITE3

int mandocdb(int, char**);

Line 103 static void mmsg(enum mandocerr, enum mandoclevel,

Line 99 static void mmsg(enum mandocerr, enum mandoclevel,

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

static void parse(struct curparse *, int, const char *);

static void passthrough(const char *, int, int);

static pid_t spawn_pager(void);

static pid_t spawn_pager(struct tag_files *);

static int toptions(struct curparse *, char *);

static void usage(enum argmode) __attribute__((noreturn));

static int woptions(struct curparse *, char *);

Line 111 static int woptions(struct curparse *, char *);

Line 107 static int woptions(struct curparse *, char *);

static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};

static char help_arg[] = "help";

static char *help_argv[] = {help_arg, NULL};

static const char *progname;

static enum mandoclevel rc;

int

main(int argc, char *argv[])

{

struct manconf conf;

struct curparse curp;

struct mansearch search;

struct manpaths paths;

struct tag_files *tag_files;

const char *progname;

char *auxpaths;

char *defos;

unsigned char *uc;

struct manpage *res, *resp;

char *conf_file, *defpaths;

size_t isec, i, sz;

int prio, best_prio, synopsis_only;

int prio, best_prio;

char sec;

enum mandoclevel rctmp;

enum outmode outmode;

int fd;

int show_usage;

int options;

int use_pager;

int status;

int c;

pid_t pager_pid; /* 0: don't use; 1: not yet spawned. */

pid_t pager_pid;

#if HAVE_PROGNAME

progname = getprogname();

#else

if (argc < 1)

progname = "mandoc";

progname = mandoc_strdup("mandoc");

else if ((progname = strrchr(argv[0], '/')) == NULL)

progname = argv[0];

else

++progname;

setprogname(progname);

#endif

#if HAVE_SQLITE3

if (strcmp(progname, BINM_MAKEWHATIS) == 0)

if (strncmp(progname, "mandocdb", 8) == 0 ||

return(mandocdb(argc, argv));

strcmp(progname, BINM_MAKEWHATIS) == 0)

return mandocdb(argc, argv);

#endif

#if HAVE_PLEDGE

if (pledge("stdio rpath tmppath tty proc exec flock", NULL) == -1)

err((int)MANDOCLEVEL_SYSERR, "pledge");

#endif

/* Search options. */

memset(&paths, 0, sizeof(struct manpaths));

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

conf_file = defpaths = NULL;

auxpaths = NULL;

Line 174 main(int argc, char *argv[])

Line 184 main(int argc, char *argv[])

memset(&curp, 0, sizeof(struct curparse));

curp.outtype = OUTT_LOCALE;

curp.wlevel = MANDOCLEVEL_BADARG;

curp.outopts = &conf.output;

options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;

defos = NULL;

pager_pid = 1;

use_pager = 1;

tag_files = NULL;

show_usage = 0;

synopsis_only = 0;

outmode = OUTMODE_DEF;

while (-1 != (c = getopt(argc, argv,

Line 192 main(int argc, char *argv[])

Line 203 main(int argc, char *argv[])

conf_file = optarg;

break;

case 'c':

pager_pid = 0;

use_pager = 0;

break;

case 'f':

search.argmode = ARG_WORD;

break;

case 'h':

(void)strlcat(curp.outopts, "synopsis,", BUFSIZ);

conf.output.synopsisonly = 1;

synopsis_only = 1;

use_pager = 0;

pager_pid = 0;

outmode = OUTMODE_ALL;

break;

case 'I':

if (strncmp(optarg, "os=", 3)) {

fprintf(stderr,

warnx("-I %s: Bad argument", optarg);

"%s: -I %s: Bad argument\n",

return (int)MANDOCLEVEL_BADARG;

progname, optarg);

return((int)MANDOCLEVEL_BADARG);

}

if (defos) {

fprintf(stderr,

warnx("-I %s: Duplicate argument", optarg);

"%s: -I %s: Duplicate argument\n",

return (int)MANDOCLEVEL_BADARG;

progname, optarg);

return((int)MANDOCLEVEL_BADARG);

}

defos = mandoc_strdup(optarg + 3);

break;

Line 223 main(int argc, char *argv[])

Line 229 main(int argc, char *argv[])

break;

case 'K':

if ( ! koptions(&options, optarg))

return((int)MANDOCLEVEL_BADARG);

return (int)MANDOCLEVEL_BADARG;

break;

case 'k':

search.argmode = ARG_EXPR;

Line 240 main(int argc, char *argv[])

Line 246 main(int argc, char *argv[])

break;

case 'O':

search.outkey = optarg;

(void)strlcat(curp.outopts, optarg, BUFSIZ);

while (optarg != NULL)

(void)strlcat(curp.outopts, ",", BUFSIZ);

manconf_output(&conf.output,

strsep(&optarg, ","));

break;

case 'S':

search.arch = optarg;

Line 251 main(int argc, char *argv[])

Line 258 main(int argc, char *argv[])

break;

case 'T':

if ( ! toptions(&curp, optarg))

return((int)MANDOCLEVEL_BADARG);

return (int)MANDOCLEVEL_BADARG;

break;

case 'W':

if ( ! woptions(&curp, optarg))

return((int)MANDOCLEVEL_BADARG);

return (int)MANDOCLEVEL_BADARG;

break;

case 'w':

outmode = OUTMODE_FLN;

Line 275 main(int argc, char *argv[])

Line 282 main(int argc, char *argv[])

switch (search.argmode) {

case ARG_FILE:

outmode = OUTMODE_ALL;

pager_pid = 0;

use_pager = 0;

break;

case ARG_NAME:

outmode = OUTMODE_ONE;

Line 286 main(int argc, char *argv[])

Line 293 main(int argc, char *argv[])

}

if (outmode == OUTMODE_FLN ||

outmode == OUTMODE_LST ||

!isatty(STDOUT_FILENO))

use_pager = 0;

#if HAVE_PLEDGE

if (!use_pager && pledge("stdio rpath flock", NULL) == -1)

err((int)MANDOCLEVEL_SYSERR, "pledge");

#endif

/* Parse arguments. */

if (argc > 0) {

Line 336 main(int argc, char *argv[])

Line 353 main(int argc, char *argv[])

/* Access the mandoc database. */

manpath_parse(&paths, conf_file, defpaths, auxpaths);

manconf_parse(&conf, conf_file, defpaths, auxpaths);

#if HAVE_SQLITE3

mansearch_setup(1);

if( ! mansearch(&search, &paths, argc, argv, &res, &sz))

if ( ! mansearch(&search, &conf.manpath,

argc, argv, &res, &sz))

usage(search.argmode);

#else

if (search.argmode != ARG_NAME) {

fputs("mandoc: database support not compiled in\n",

stderr);

return((int)MANDOCLEVEL_BADARG);

return (int)MANDOCLEVEL_BADARG;

}

sz = 0;

#endif

if (sz == 0 && search.argmode == ARG_NAME)

if (sz == 0) {

fs_search(&search, &paths, argc, argv, &res, &sz);

if (search.argmode == ARG_NAME)

fs_search(&search, &conf.manpath,

argc, argv, &res, &sz);

else

warnx("nothing appropriate");

}

if (sz == 0) {

rc = MANDOCLEVEL_BADARG;

Line 406 main(int argc, char *argv[])

Line 429 main(int argc, char *argv[])

/* mandoc(1) */

#if HAVE_PLEDGE

if (pledge(use_pager ? "stdio rpath tmppath tty proc exec" :

"stdio rpath", NULL) == -1)

err((int)MANDOCLEVEL_SYSERR, "pledge");

#endif

if (search.argmode == ARG_FILE && ! moptions(&options, auxpaths))

return((int)MANDOCLEVEL_BADARG);

return (int)MANDOCLEVEL_BADARG;

curp.mchars = mchars_alloc();

mchars_alloc();

curp.mp = mparse_alloc(options, curp.wlevel, mmsg,

curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);

curp.mchars, defos);

* Conditionally start up the lookaside buffer before parsing.

Line 420 main(int argc, char *argv[])

Line 448 main(int argc, char *argv[])

mparse_keep(curp.mp);

if (argc < 1) {

if (pager_pid == 1 && isatty(STDOUT_FILENO))

if (use_pager)

pager_pid = spawn_pager();

tag_files = tag_init();

parse(&curp, STDIN_FILENO, "<stdin>");

}

Line 432 main(int argc, char *argv[])

Line 460 main(int argc, char *argv[])

rc = rctmp;

if (fd != -1) {

if (pager_pid == 1 && isatty(STDOUT_FILENO))

if (use_pager) {

pager_pid = spawn_pager();

tag_files = tag_init();

use_pager = 0;

}

if (resp == NULL)

parse(&curp, fd, *argv);

else if (resp->form & FORM_SRC) {

/* For .so only; ignore failure. */

chdir(paths.paths[resp->ipath]);

chdir(conf.manpath.paths[resp->ipath]);

parse(&curp, fd, resp->file);

} else

passthrough(resp->file, fd, synopsis_only);

passthrough(resp->file, fd,

conf.output.synopsisonly);

rctmp = mparse_wait(curp.mp);

if (rc < rctmp)

rc = rctmp;

if (argc > 1 && curp.outtype <= OUTT_UTF8)

ascii_sepline(curp.outdata);

}

Line 463 main(int argc, char *argv[])

Line 490 main(int argc, char *argv[])

mparse_reset(curp.mp);

}

if (curp.outfree)

if (curp.outdata != NULL) {

(*curp.outfree)(curp.outdata);

switch (curp.outtype) {

case OUTT_HTML:

html_free(curp.outdata);

break;

case OUTT_UTF8:

case OUTT_LOCALE:

case OUTT_ASCII:

ascii_free(curp.outdata);

break;

case OUTT_PDF:

case OUTT_PS:

pspdf_free(curp.outdata);

break;

default:

break;

}

mparse_free(curp.mp);

mchars_free(curp.mchars);

mchars_free();

out:

if (search.argmode != ARG_FILE) {

manpath_free(&paths);

manconf_free(&conf);

#if HAVE_SQLITE3

mansearch_free(res, sz);

mansearch_setup(0);

Line 480 out:

Line 523 out:

free(defos);

* If a pager is attached, flush the pipe leading to it

* When using a pager, finish writing both temporary files,

* and signal end of file such that the user can browse

* fork it, wait for the user to close it, and clean up.

* to the end. Then wait for the user to close the pager.

if (pager_pid != 0 && pager_pid != 1) {

if (tag_files != NULL) {

fclose(stdout);

waitpid(pager_pid, NULL, 0);

tag_write();

pager_pid = spawn_pager(tag_files);

for (;;) {

if (waitpid(pager_pid, &status, WUNTRACED) == -1) {

if (errno == EINTR)

continue;

warn("wait");

rc = MANDOCLEVEL_SYSERR;

break;

}

if (!WIFSTOPPED(status))

break;

(void)tcsetpgrp(STDIN_FILENO, getpgid(0));

kill(0, WSTOPSIG(status));

* I'm now stopped.

* When getting SIGCONT, continue here:

(void)tcsetpgrp(STDIN_FILENO, pager_pid);

kill(pager_pid, SIGCONT);

}

tag_unlink();

}

return((int)rc);

return (int)rc;

}

static void

Line 499 usage(enum argmode argmode)

Line 565 usage(enum argmode argmode)

switch (argmode) {

case ARG_FILE:

fputs("usage: mandoc [-acfhkl] [-Ios=name] "

fputs("usage: mandoc [-acfhkl] [-I os=name] "

"[-Kencoding] [-mformat] [-Ooption]\n"

"[-K encoding] [-mformat] [-O option]\n"

"\t [-Toutput] [-Wlevel] [file ...]\n", stderr);

"\t [-T output] [-W level] [file ...]\n", stderr);

break;

case ARG_NAME:

fputs("usage: man [-acfhklw] [-C file] [-I os=name] "

Line 557 fs_lookup(const struct manpaths *paths, size_t ipath,

Line 623 fs_lookup(const struct manpaths *paths, size_t ipath,

free(file);

}

mandoc_asprintf(&file, "%s/man%s/%s.*",

mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",

paths->paths[ipath], sec, name);

globres = glob(file, 0, NULL, &globinfo);

if (globres != 0 && globres != GLOB_NOMATCH)

fprintf(stderr, "%s: %s: glob: %s\n",

warn("%s: glob", file);

progname, file, strerror(errno));

free(file);

if (globres == 0)

file = mandoc_strdup(*globinfo.gl_pathv);

globfree(&globinfo);

if (globres != 0)

return(0);

return 0;

found:

#if HAVE_SQLITE3

fprintf(stderr, "%s: outdated mandoc.db lacks %s(%s) entry,\n"

warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",

" consider running # makewhatis %s\n",

name, sec, paths->paths[ipath]);

progname, name, sec, paths->paths[ipath]);

#endif

*res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));

page = *res + (*ressz - 1);

page->file = file;

Line 586 found:

Line 649 found:

page->bits = NAME_FILE & NAME_MASK;

page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;

page->form = form;

return(1);

return 1;

}

static void

Line 617 fs_search(const struct mansearch *cfg, const struct ma

Line 680 fs_search(const struct mansearch *cfg, const struct ma

return;

}

if (*ressz == lastsz)

fprintf(stderr,

warnx("No entry for %s in the manual.", *argv);

"%s: No entry for %s in the manual.\n",

progname, *argv);

lastsz = *ressz;

argv++;

argc--;

Line 630 static void

Line 691 static void

parse(struct curparse *curp, int fd, const char *file)

{

enum mandoclevel rctmp;

struct mdoc *mdoc;

struct roff_man *man;

struct man *man;

/* Begin by parsing the file itself. */

Line 652 parse(struct curparse *curp, int fd, const char *file)

Line 712 parse(struct curparse *curp, int fd, const char *file)

/* If unset, allocate output dev now (if applicable). */

if ( ! (curp->outman && curp->outmdoc)) {

if (curp->outdata == NULL) {

switch (curp->outtype) {

case OUTT_HTML:

curp->outdata = html_alloc(curp->mchars,

curp->outdata = html_alloc(curp->outopts);

curp->outopts);

curp->outfree = html_free;

break;

case OUTT_UTF8:

curp->outdata = utf8_alloc(curp->mchars,

curp->outdata = utf8_alloc(curp->outopts);

curp->outopts);

curp->outfree = ascii_free;

break;

case OUTT_LOCALE:

curp->outdata = locale_alloc(curp->mchars,

curp->outdata = locale_alloc(curp->outopts);

curp->outopts);

curp->outfree = ascii_free;

break;

case OUTT_ASCII:

curp->outdata = ascii_alloc(curp->mchars,

curp->outdata = ascii_alloc(curp->outopts);

curp->outopts);

curp->outfree = ascii_free;

break;

case OUTT_PDF:

curp->outdata = pdf_alloc(curp->mchars,

curp->outdata = pdf_alloc(curp->outopts);

curp->outopts);

curp->outfree = pspdf_free;

break;

case OUTT_PS:

curp->outdata = ps_alloc(curp->mchars,

curp->outdata = ps_alloc(curp->outopts);

curp->outopts);

curp->outfree = pspdf_free;

break;

default:

break;

}

mparse_result(curp->mp, &man, NULL);

/* Execute the out device, if it exists. */

if (man == NULL)

return;

if (man->macroset == MACROSET_MDOC) {

mdoc_validate(man);

switch (curp->outtype) {

case OUTT_HTML:

curp->outman = html_man;

html_mdoc(curp->outdata, man);

curp->outmdoc = html_mdoc;

break;

case OUTT_TREE:

curp->outman = tree_man;

tree_mdoc(curp->outdata, man);

curp->outmdoc = tree_mdoc;

break;

case OUTT_MAN:

curp->outmdoc = man_mdoc;

man_mdoc(curp->outdata, man);

curp->outman = man_man;

break;

case OUTT_PDF:

/* FALLTHROUGH */

case OUTT_ASCII:

/* FALLTHROUGH */

case OUTT_UTF8:

/* FALLTHROUGH */

case OUTT_LOCALE:

/* FALLTHROUGH */

case OUTT_PS:

curp->outman = terminal_man;

terminal_mdoc(curp->outdata, man);

curp->outmdoc = terminal_mdoc;

break;

default:

break;

}

if (man->macroset == MACROSET_MAN) {

mparse_result(curp->mp, &mdoc, &man, NULL);

man_validate(man);

switch (curp->outtype) {

/* Execute the out device, if it exists. */

case OUTT_HTML:

html_man(curp->outdata, man);

if (man && curp->outman)

break;

(*curp->outman)(curp->outdata, man);

case OUTT_TREE:

if (mdoc && curp->outmdoc)

tree_man(curp->outdata, man);

(*curp->outmdoc)(curp->outdata, mdoc);

break;

case OUTT_MAN:

man_man(curp->outdata, man);

break;

case OUTT_PDF:

case OUTT_ASCII:

case OUTT_UTF8:

case OUTT_LOCALE:

case OUTT_PS:

terminal_man(curp->outdata, man);

break;

default:

break;

}

static void

Line 736 passthrough(const char *file, int fd, int synopsis_onl

Line 799 passthrough(const char *file, int fd, int synopsis_onl

FILE *stream;

const char *syscall;

char *line;

char *line, *cp;

size_t len, off;

size_t linesz;

ssize_t nw;

int print;

fflush(stdout);

line = NULL;

linesz = 0;

if ((stream = fdopen(fd, "r")) == NULL) {

close(fd);

Line 750 passthrough(const char *file, int fd, int synopsis_onl

Line 813 passthrough(const char *file, int fd, int synopsis_onl

}

print = 0;

while ((line = fgetln(stream, &len)) != NULL) {

while (getline(&line, &linesz, stream) != -1) {

cp = line;

if (synopsis_only) {

if (print) {

if ( ! isspace((unsigned char)*line))

if ( ! isspace((unsigned char)*cp))

goto done;

while (len &&

while (isspace((unsigned char)*cp))

isspace((unsigned char)*line)) {

cp++;

line++;

len--;

}

} else {

if ((len == sizeof(synb) &&

if (strcmp(cp, synb) == 0 ||

! strncmp(line, synb, len - 1)) ||

strcmp(cp, synr) == 0)

(len == sizeof(synr) &&

! strncmp(line, synr, len - 1)))

print = 1;

continue;

}

for (off = 0; off < len; off += nw)

if (fputs(cp, stdout)) {

if ((nw = write(STDOUT_FILENO, line + off,

fclose(stream);

len - off)) == -1 || nw == 0) {

syscall = "fputs";

fclose(stream);

goto fail;

syscall = "write";

}

goto fail;

}

if (ferror(stream)) {

fclose(stream);

syscall = "fgetln";

syscall = "getline";

goto fail;

}

done:

free(line);

fclose(stream);

return;

fail:

fprintf(stderr, "%s: %s: SYSERR: %s: %s",

free(line);

progname, file, syscall, strerror(errno));

warn("%s: SYSERR: %s", file, syscall);

if (rc < MANDOCLEVEL_SYSERR)

rc = MANDOCLEVEL_SYSERR;

}

Line 808 koptions(int *options, char *arg)

Line 866 koptions(int *options, char *arg)

} else if ( ! strcmp(arg, "us-ascii")) {

*options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);

} else {

fprintf(stderr, "%s: -K %s: Bad argument\n",

warnx("-K %s: Bad argument", arg);

progname, arg);

return 0;

return(0);

}

return(1);

return 1;

}

static int

Line 828 moptions(int *options, char *arg)

Line 885 moptions(int *options, char *arg)

else if (0 == strcmp(arg, "an"))

*options |= MPARSE_MAN;

else {

fprintf(stderr, "%s: -m %s: Bad argument\n",

warnx("-m %s: Bad argument", arg);

progname, arg);

return 0;

return(0);

}

return(1);

return 1;

}

static int

Line 862 toptions(struct curparse *curp, char *arg)

Line 918 toptions(struct curparse *curp, char *arg)

else if (0 == strcmp(arg, "pdf"))

curp->outtype = OUTT_PDF;

else {

fprintf(stderr, "%s: -T %s: Bad argument\n",

warnx("-T %s: Bad argument", arg);

progname, arg);

return 0;

return(0);

}

return(1);

return 1;

}

static int

Line 891 woptions(struct curparse *curp, char *arg)

Line 946 woptions(struct curparse *curp, char *arg)

curp->wstop = 1;

break;

case 1:

/* FALLTHROUGH */

case 2:

curp->wlevel = MANDOCLEVEL_WARNING;

break;

Line 905 woptions(struct curparse *curp, char *arg)

Line 959 woptions(struct curparse *curp, char *arg)

curp->wlevel = MANDOCLEVEL_BADARG;

break;

default:

fprintf(stderr, "%s: -W %s: Bad argument\n",

warnx("-W %s: Bad argument", o);

progname, o);

return 0;

return(0);

}

return(1);

return 1;

}

static void

Line 920 mmsg(enum mandocerr t, enum mandoclevel lvl,

Line 973 mmsg(enum mandocerr t, enum mandoclevel lvl,

{

const char *mparse_msg;

fprintf(stderr, "%s: %s:", progname, file);

fprintf(stderr, "%s: %s:", getprogname(), file);

if (line)

fprintf(stderr, "%d:%d:", line, col + 1);

Line 936 mmsg(enum mandocerr t, enum mandoclevel lvl,

Line 989 mmsg(enum mandocerr t, enum mandoclevel lvl,

fputc('\n', stderr);

}

static void

handle_sigpipe(int signum)

{

exit((int)rc);

}

static pid_t

spawn_pager(void)

spawn_pager(struct tag_files *tag_files)

{

#define MAX_PAGER_ARGS 16

char *argv[MAX_PAGER_ARGS];

const char *pager;

char *cp;

int fildes[2];

size_t cmdlen;

int argc;

pid_t pager_pid;

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

fprintf(stderr, "%s: pipe: %s\n",

progname, strerror(errno));

return(0);

}

switch (pager_pid = fork()) {

case -1:

fprintf(stderr, "%s: fork: %s\n",

progname, strerror(errno));

exit((int)MANDOCLEVEL_SYSERR);

case 0:

break;

default:

close(fildes[0]);

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

fprintf(stderr, "%s: dup output: %s\n",

progname, strerror(errno));

exit((int)MANDOCLEVEL_SYSERR);

}

close(fildes[1]);

signal(SIGPIPE, handle_sigpipe);

return(pager_pid);

}

/* The child process becomes the pager. */

close(fildes[1]);

if (dup2(fildes[0], STDIN_FILENO) == -1) {

fprintf(stderr, "%s: dup input: %s\n",

progname, strerror(errno));

exit((int)MANDOCLEVEL_SYSERR);

}

close(fildes[0]);

pager = getenv("MANPAGER");

if (pager == NULL || *pager == '\0')

pager = getenv("PAGER");

if (pager == NULL || *pager == '\0')

pager = "/usr/bin/more -s";

pager = "more -s";

cp = mandoc_strdup(pager);

Line 1002 spawn_pager(void)

Line 1013 spawn_pager(void)

argc = 0;

while (argc + 1 < MAX_PAGER_ARGS) {

while (argc + 4 < MAX_PAGER_ARGS) {

argv[argc++] = cp;

cp = strchr(cp, ' ');

if (cp == NULL)

Line 1013 spawn_pager(void)

Line 1024 spawn_pager(void)

if (*cp == '\0')

break;

}

/* For more(1) and less(1), use the tag file. */

if ((cmdlen = strlen(argv[0])) >= 4) {

cp = argv[0] + cmdlen - 4;

if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {

argv[argc++] = mandoc_strdup("-T");

argv[argc++] = tag_files->tfn;

}

argv[argc++] = tag_files->ofn;

argv[argc] = NULL;

/* Hand over to the pager. */

switch (pager_pid = fork()) {

case -1:

err((int)MANDOCLEVEL_SYSERR, "fork");

case 0:

/* Set pgrp in both parent and child to avoid racing exec. */

(void)setpgid(0, 0);

break;

default:

(void)setpgid(pager_pid, 0);

if (tcsetpgrp(STDIN_FILENO, pager_pid) == -1)

err((int)MANDOCLEVEL_SYSERR, "tcsetpgrp");

#if HAVE_PLEDGE

if (pledge("stdio rpath tmppath tty proc", NULL) == -1)

err((int)MANDOCLEVEL_SYSERR, "pledge");

#endif

return pager_pid;

}

/* The child process becomes the pager. */

if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)

err((int)MANDOCLEVEL_SYSERR, "pager stdout");

close(tag_files->ofd);

close(tag_files->tfd);

execvp(argv[0], argv);

fprintf(stderr, "%s: exec: %s\n",

err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);

progname, strerror(errno));

exit((int)MANDOCLEVEL_SYSERR);

}

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