version 1.180, 2014/08/17 03:24:47 |
version 1.197, 2014/11/11 02:10:04 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2010, 2011, 2012, 2014 Ingo Schwarze <schwarze@openbsd.org> |
* Copyright (c) 2010, 2011, 2012, 2014 Ingo Schwarze <schwarze@openbsd.org> |
* Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org> |
* Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org> |
* |
* |
|
|
#include <sys/types.h> |
#include <sys/types.h> |
|
|
#include <assert.h> |
#include <assert.h> |
|
#include <ctype.h> |
|
#include <errno.h> |
|
#include <fcntl.h> |
#include <stdio.h> |
#include <stdio.h> |
#include <stdint.h> |
#include <stdint.h> |
#include <stdlib.h> |
#include <stdlib.h> |
|
|
# endif |
# endif |
#endif /* !defined(__GNUC__) || (__GNUC__ < 2) */ |
#endif /* !defined(__GNUC__) || (__GNUC__ < 2) */ |
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|
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enum outmode { |
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OUTMODE_DEF = 0, |
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OUTMODE_FLN, |
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OUTMODE_LST, |
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OUTMODE_ALL, |
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OUTMODE_INT, |
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OUTMODE_ONE |
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}; |
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typedef void (*out_mdoc)(void *, const struct mdoc *); |
typedef void (*out_mdoc)(void *, const struct mdoc *); |
typedef void (*out_man)(void *, const struct man *); |
typedef void (*out_man)(void *, const struct man *); |
typedef void (*out_free)(void *); |
typedef void (*out_free)(void *); |
|
|
OUTT_TREE, /* -Ttree */ |
OUTT_TREE, /* -Ttree */ |
OUTT_MAN, /* -Tman */ |
OUTT_MAN, /* -Tman */ |
OUTT_HTML, /* -Thtml */ |
OUTT_HTML, /* -Thtml */ |
OUTT_XHTML, /* -Txhtml */ |
|
OUTT_LINT, /* -Tlint */ |
OUTT_LINT, /* -Tlint */ |
OUTT_PS, /* -Tps */ |
OUTT_PS, /* -Tps */ |
OUTT_PDF /* -Tpdf */ |
OUTT_PDF /* -Tpdf */ |
|
|
|
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struct curparse { |
struct curparse { |
struct mparse *mp; |
struct mparse *mp; |
|
struct mchars *mchars; /* character table */ |
enum mandoclevel wlevel; /* ignore messages below this */ |
enum mandoclevel wlevel; /* ignore messages below this */ |
int wstop; /* stop after a file with a warning */ |
int wstop; /* stop after a file with a warning */ |
enum outt outtype; /* which output to use */ |
enum outt outtype; /* which output to use */ |
Line 70 struct curparse { |
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Line 82 struct curparse { |
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char outopts[BUFSIZ]; /* buf of output opts */ |
char outopts[BUFSIZ]; /* buf of output opts */ |
}; |
}; |
|
|
|
static int koptions(int *, char *); |
static int moptions(int *, char *); |
static int moptions(int *, char *); |
static void mmsg(enum mandocerr, enum mandoclevel, |
static void mmsg(enum mandocerr, enum mandoclevel, |
const char *, int, int, const char *); |
const char *, int, int, const char *); |
static void parse(struct curparse *, int, |
static void parse(struct curparse *, int, |
const char *, enum mandoclevel *); |
const char *, enum mandoclevel *); |
|
static enum mandoclevel passthrough(const char *, int, int); |
|
static void spawn_pager(void); |
static int toptions(struct curparse *, char *); |
static int toptions(struct curparse *, char *); |
static void usage(enum argmode) __attribute__((noreturn)); |
static void usage(enum argmode) __attribute__((noreturn)); |
static void version(void) __attribute__((noreturn)); |
static void version(void) __attribute__((noreturn)); |
static int woptions(struct curparse *, char *); |
static int woptions(struct curparse *, char *); |
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|
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static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9}; |
static const char *progname; |
static const char *progname; |
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Line 92 main(int argc, char *argv[]) |
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Line 108 main(int argc, char *argv[]) |
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char *conf_file, *defpaths, *auxpaths; |
char *conf_file, *defpaths, *auxpaths; |
char *defos; |
char *defos; |
#if HAVE_SQLITE3 |
#if HAVE_SQLITE3 |
struct manpage *res; |
struct manpage *res, *resp; |
size_t i, sz; |
size_t isec, i, sz; |
|
int prio, best_prio; |
|
char sec; |
#endif |
#endif |
enum mandoclevel rc; |
enum mandoclevel rc; |
|
enum outmode outmode; |
|
pid_t child_pid; |
|
int fd; |
int show_usage; |
int show_usage; |
|
int use_pager; |
|
int synopsis_only; |
int options; |
int options; |
int c; |
int c; |
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Line 128 main(int argc, char *argv[]) |
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Line 151 main(int argc, char *argv[]) |
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memset(&curp, 0, sizeof(struct curparse)); |
memset(&curp, 0, sizeof(struct curparse)); |
curp.outtype = OUTT_ASCII; |
curp.outtype = OUTT_ASCII; |
curp.wlevel = MANDOCLEVEL_FATAL; |
curp.wlevel = MANDOCLEVEL_FATAL; |
options = MPARSE_SO; |
options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1; |
defos = NULL; |
defos = NULL; |
|
|
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use_pager = 1; |
show_usage = 0; |
show_usage = 0; |
while (-1 != (c = getopt(argc, argv, "C:fI:kM:m:O:S:s:T:VW:"))) { |
synopsis_only = 0; |
|
outmode = OUTMODE_DEF; |
|
|
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while (-1 != (c = getopt(argc, argv, |
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"aC:cfhI:iK:klM:m:O:S:s:T:VW:w"))) { |
switch (c) { |
switch (c) { |
|
case 'a': |
|
outmode = OUTMODE_ALL; |
|
break; |
case 'C': |
case 'C': |
conf_file = optarg; |
conf_file = optarg; |
break; |
break; |
|
case 'c': |
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use_pager = 0; |
|
break; |
case 'f': |
case 'f': |
search.argmode = ARG_WORD; |
search.argmode = ARG_WORD; |
break; |
break; |
|
case 'h': |
|
(void)strlcat(curp.outopts, "synopsis,", BUFSIZ); |
|
synopsis_only = 1; |
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outmode = OUTMODE_ALL; |
|
break; |
case 'I': |
case 'I': |
if (strncmp(optarg, "os=", 3)) { |
if (strncmp(optarg, "os=", 3)) { |
fprintf(stderr, |
fprintf(stderr, |
Line 155 main(int argc, char *argv[]) |
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Line 194 main(int argc, char *argv[]) |
|
} |
} |
defos = mandoc_strdup(optarg + 3); |
defos = mandoc_strdup(optarg + 3); |
break; |
break; |
|
case 'i': |
|
outmode = OUTMODE_INT; |
|
break; |
|
case 'K': |
|
if ( ! koptions(&options, optarg)) |
|
return((int)MANDOCLEVEL_BADARG); |
|
break; |
case 'k': |
case 'k': |
search.argmode = ARG_EXPR; |
search.argmode = ARG_EXPR; |
break; |
break; |
|
case 'l': |
|
search.argmode = ARG_FILE; |
|
outmode = OUTMODE_ALL; |
|
break; |
case 'M': |
case 'M': |
defpaths = optarg; |
defpaths = optarg; |
break; |
break; |
Line 183 main(int argc, char *argv[]) |
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Line 233 main(int argc, char *argv[]) |
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if ( ! woptions(&curp, optarg)) |
if ( ! woptions(&curp, optarg)) |
return((int)MANDOCLEVEL_BADARG); |
return((int)MANDOCLEVEL_BADARG); |
break; |
break; |
|
case 'w': |
|
outmode = OUTMODE_FLN; |
|
break; |
case 'V': |
case 'V': |
version(); |
version(); |
/* NOTREACHED */ |
/* NOTREACHED */ |
Line 195 main(int argc, char *argv[]) |
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Line 248 main(int argc, char *argv[]) |
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if (show_usage) |
if (show_usage) |
usage(search.argmode); |
usage(search.argmode); |
|
|
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/* Postprocess options. */ |
|
|
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if (outmode == OUTMODE_DEF) { |
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switch (search.argmode) { |
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case ARG_FILE: |
|
outmode = OUTMODE_ALL; |
|
use_pager = 0; |
|
break; |
|
case ARG_NAME: |
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outmode = OUTMODE_ONE; |
|
break; |
|
default: |
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outmode = OUTMODE_LST; |
|
break; |
|
} |
|
} |
|
|
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/* Parse arguments. */ |
|
|
argc -= optind; |
argc -= optind; |
argv += optind; |
argv += optind; |
|
#if HAVE_SQLITE3 |
|
resp = NULL; |
|
#endif |
|
|
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/* Quirk for a man(1) section argument without -s. */ |
|
|
|
if (search.argmode == ARG_NAME && |
|
argv[0] != NULL && |
|
isdigit((unsigned char)argv[0][0]) && |
|
(argv[0][1] == '\0' || !strcmp(argv[0], "3p"))) { |
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search.sec = argv[0]; |
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argv++; |
|
argc--; |
|
} |
|
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rc = MANDOCLEVEL_OK; |
|
|
/* man(1), whatis(1), apropos(1) */ |
/* man(1), whatis(1), apropos(1) */ |
|
|
if (search.argmode != ARG_FILE) { |
if (search.argmode != ARG_FILE) { |
#if HAVE_SQLITE3 |
#if HAVE_SQLITE3 |
if (argc == 0) |
if (argc == 0) |
usage(search.argmode); |
usage(search.argmode); |
|
|
|
/* Access the mandoc database. */ |
|
|
manpath_parse(&paths, conf_file, defpaths, auxpaths); |
manpath_parse(&paths, conf_file, defpaths, auxpaths); |
mansearch_setup(1); |
mansearch_setup(1); |
if( ! mansearch(&search, &paths, argc, argv, &res, &sz)) |
if( ! mansearch(&search, &paths, argc, argv, &res, &sz)) |
usage(search.argmode); |
usage(search.argmode); |
manpath_free(&paths); |
resp = res; |
for (i = 0; i < sz; i++) |
|
printf("%s - %s\n", res[i].names, |
if (sz == 0) { |
res[i].output == NULL ? "" : res[i].output); |
if (search.argmode == ARG_NAME) |
mansearch_free(res, sz); |
fprintf(stderr, "%s: No entry for %s " |
mansearch_setup(0); |
"in the manual.\n", progname, argv[0]); |
return((int)MANDOCLEVEL_OK); |
rc = MANDOCLEVEL_BADARG; |
|
goto out; |
|
} |
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/* |
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* For standard man(1) and -a output mode, |
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* prepare for copying filename pointers |
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* into the program parameter array. |
|
*/ |
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|
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if (outmode == OUTMODE_ONE) { |
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argc = 1; |
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best_prio = 10; |
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} else if (outmode == OUTMODE_ALL) |
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argc = (int)sz; |
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/* Iterate all matching manuals. */ |
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for (i = 0; i < sz; i++) { |
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if (outmode == OUTMODE_FLN) |
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puts(res[i].file); |
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else if (outmode == OUTMODE_LST) |
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printf("%s - %s\n", res[i].names, |
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res[i].output == NULL ? "" : |
|
res[i].output); |
|
else if (outmode == OUTMODE_ONE) { |
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/* Search for the best section. */ |
|
isec = strcspn(res[i].file, "123456789"); |
|
sec = res[i].file[isec]; |
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if ('\0' == sec) |
|
continue; |
|
prio = sec_prios[sec - '1']; |
|
if (prio >= best_prio) |
|
continue; |
|
best_prio = prio; |
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resp = res + i; |
|
} |
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} |
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/* |
|
* For man(1), -a and -i output mode, fall through |
|
* to the main mandoc(1) code iterating files |
|
* and running the parsers on each of them. |
|
*/ |
|
|
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if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST) |
|
goto out; |
#else |
#else |
fputs("mandoc: database support not compiled in\n", |
fputs("mandoc: database support not compiled in\n", |
stderr); |
stderr); |
Line 227 main(int argc, char *argv[]) |
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Line 364 main(int argc, char *argv[]) |
|
if ( ! moptions(&options, auxpaths)) |
if ( ! moptions(&options, auxpaths)) |
return((int)MANDOCLEVEL_BADARG); |
return((int)MANDOCLEVEL_BADARG); |
|
|
curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos); |
if (use_pager && isatty(STDOUT_FILENO)) |
|
spawn_pager(); |
|
|
|
curp.mchars = mchars_alloc(); |
|
curp.mp = mparse_alloc(options, curp.wlevel, mmsg, |
|
curp.mchars, defos); |
|
|
/* |
/* |
* Conditionally start up the lookaside buffer before parsing. |
* Conditionally start up the lookaside buffer before parsing. |
*/ |
*/ |
if (OUTT_MAN == curp.outtype) |
if (OUTT_MAN == curp.outtype) |
mparse_keep(curp.mp); |
mparse_keep(curp.mp); |
|
|
rc = MANDOCLEVEL_OK; |
if (argc == 0) |
|
|
if (NULL == *argv) |
|
parse(&curp, STDIN_FILENO, "<stdin>", &rc); |
parse(&curp, STDIN_FILENO, "<stdin>", &rc); |
|
|
while (*argv) { |
while (argc) { |
parse(&curp, -1, *argv, &rc); |
#if HAVE_SQLITE3 |
|
if (resp != NULL) { |
|
rc = mparse_open(curp.mp, &fd, resp->file, |
|
&child_pid); |
|
if (fd == -1) |
|
/* nothing */; |
|
else if (resp->form & FORM_SRC) { |
|
/* For .so only; ignore failure. */ |
|
chdir(paths.paths[resp->ipath]); |
|
parse(&curp, fd, resp->file, &rc); |
|
} else |
|
rc = passthrough(resp->file, fd, |
|
synopsis_only); |
|
resp++; |
|
} else |
|
#endif |
|
{ |
|
rc = mparse_open(curp.mp, &fd, *argv++, |
|
&child_pid); |
|
if (fd != -1) |
|
parse(&curp, fd, argv[-1], &rc); |
|
} |
|
|
|
if (child_pid && |
|
mparse_wait(curp.mp, child_pid) != MANDOCLEVEL_OK) |
|
rc = MANDOCLEVEL_SYSERR; |
|
|
if (MANDOCLEVEL_OK != rc && curp.wstop) |
if (MANDOCLEVEL_OK != rc && curp.wstop) |
break; |
break; |
++argv; |
argc--; |
} |
} |
|
|
if (curp.outfree) |
if (curp.outfree) |
(*curp.outfree)(curp.outdata); |
(*curp.outfree)(curp.outdata); |
if (curp.mp) |
mparse_free(curp.mp); |
mparse_free(curp.mp); |
mchars_free(curp.mchars); |
|
|
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#if HAVE_SQLITE3 |
|
out: |
|
if (search.argmode != ARG_FILE) { |
|
manpath_free(&paths); |
|
mansearch_free(res, sz); |
|
mansearch_setup(0); |
|
} |
|
#endif |
|
|
free(defos); |
free(defos); |
|
|
return((int)rc); |
return((int)rc); |
Line 270 usage(enum argmode argmode) |
|
Line 446 usage(enum argmode argmode) |
|
|
|
switch (argmode) { |
switch (argmode) { |
case ARG_FILE: |
case ARG_FILE: |
fputs("usage: mandoc [-V] [-Ios=name] [-mformat]" |
fputs("usage: mandoc [-acfhklV] [-Ios=name] " |
" [-Ooption] [-Toutput] [-Wlevel]\n" |
"[-Kencoding] [-mformat] [-Ooption]\n" |
"\t [file ...]\n", stderr); |
"\t [-Toutput] [-Wlevel] [file ...]\n", stderr); |
break; |
break; |
case ARG_NAME: |
case ARG_NAME: |
fputs("usage: man [-acfhkVw] [-C file] " |
fputs("usage: man [-acfhklVw] [-C file] " |
"[-M path] [-m path] [-S arch] [-s section]\n" |
"[-M path] [-m path] [-S arch] [-s section]\n" |
"\t [section] name ...\n", stderr); |
"\t [section] name ...\n", stderr); |
break; |
break; |
case ARG_WORD: |
case ARG_WORD: |
fputs("usage: whatis [-V] [-C file] [-M path] [-m path] " |
fputs("usage: whatis [-acfhklVw] [-C file] " |
"[-S arch] [-s section] name ...\n", stderr); |
"[-M path] [-m path] [-O outkey] [-S arch]\n" |
|
"\t [-s section] name ...\n", stderr); |
break; |
break; |
case ARG_EXPR: |
case ARG_EXPR: |
fputs("usage: apropos [-V] [-C file] [-M path] [-m path] " |
fputs("usage: apropos [-acfhklVw] [-C file] " |
"[-O outkey] [-S arch]\n" |
"[-M path] [-m path] [-O outkey] [-S arch]\n" |
"\t [-s section] expression ...\n", stderr); |
"\t [-s section] expression ...\n", stderr); |
break; |
break; |
} |
} |
Line 324 parse(struct curparse *curp, int fd, const char *file, |
|
Line 501 parse(struct curparse *curp, int fd, const char *file, |
|
|
|
if ( ! (curp->outman && curp->outmdoc)) { |
if ( ! (curp->outman && curp->outmdoc)) { |
switch (curp->outtype) { |
switch (curp->outtype) { |
case OUTT_XHTML: |
|
curp->outdata = xhtml_alloc(curp->outopts); |
|
curp->outfree = html_free; |
|
break; |
|
case OUTT_HTML: |
case OUTT_HTML: |
curp->outdata = html_alloc(curp->outopts); |
curp->outdata = html_alloc(curp->mchars, |
|
curp->outopts); |
curp->outfree = html_free; |
curp->outfree = html_free; |
break; |
break; |
case OUTT_UTF8: |
case OUTT_UTF8: |
curp->outdata = utf8_alloc(curp->outopts); |
curp->outdata = utf8_alloc(curp->mchars, |
|
curp->outopts); |
curp->outfree = ascii_free; |
curp->outfree = ascii_free; |
break; |
break; |
case OUTT_LOCALE: |
case OUTT_LOCALE: |
curp->outdata = locale_alloc(curp->outopts); |
curp->outdata = locale_alloc(curp->mchars, |
|
curp->outopts); |
curp->outfree = ascii_free; |
curp->outfree = ascii_free; |
break; |
break; |
case OUTT_ASCII: |
case OUTT_ASCII: |
curp->outdata = ascii_alloc(curp->outopts); |
curp->outdata = ascii_alloc(curp->mchars, |
|
curp->outopts); |
curp->outfree = ascii_free; |
curp->outfree = ascii_free; |
break; |
break; |
case OUTT_PDF: |
case OUTT_PDF: |
curp->outdata = pdf_alloc(curp->outopts); |
curp->outdata = pdf_alloc(curp->mchars, |
|
curp->outopts); |
curp->outfree = pspdf_free; |
curp->outfree = pspdf_free; |
break; |
break; |
case OUTT_PS: |
case OUTT_PS: |
curp->outdata = ps_alloc(curp->outopts); |
curp->outdata = ps_alloc(curp->mchars, |
|
curp->outopts); |
curp->outfree = pspdf_free; |
curp->outfree = pspdf_free; |
break; |
break; |
default: |
default: |
Line 358 parse(struct curparse *curp, int fd, const char *file, |
|
Line 537 parse(struct curparse *curp, int fd, const char *file, |
|
|
|
switch (curp->outtype) { |
switch (curp->outtype) { |
case OUTT_HTML: |
case OUTT_HTML: |
/* FALLTHROUGH */ |
|
case OUTT_XHTML: |
|
curp->outman = html_man; |
curp->outman = html_man; |
curp->outmdoc = html_mdoc; |
curp->outmdoc = html_mdoc; |
break; |
break; |
Line 405 parse(struct curparse *curp, int fd, const char *file, |
|
Line 582 parse(struct curparse *curp, int fd, const char *file, |
|
*level = rc; |
*level = rc; |
} |
} |
|
|
|
static enum mandoclevel |
|
passthrough(const char *file, int fd, int synopsis_only) |
|
{ |
|
const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"; |
|
const char synr[] = "SYNOPSIS"; |
|
|
|
FILE *stream; |
|
const char *syscall; |
|
char *line; |
|
size_t len, off; |
|
ssize_t nw; |
|
int print; |
|
|
|
if ((stream = fdopen(fd, "r")) == NULL) { |
|
close(fd); |
|
syscall = "fdopen"; |
|
goto fail; |
|
} |
|
|
|
print = 0; |
|
while ((line = fgetln(stream, &len)) != NULL) { |
|
if (synopsis_only) { |
|
if (print) { |
|
if ( ! isspace((unsigned char)*line)) |
|
goto done; |
|
while (len && |
|
isspace((unsigned char)*line)) { |
|
line++; |
|
len--; |
|
} |
|
} else { |
|
if ((len == sizeof(synb) && |
|
! strncmp(line, synb, len - 1)) || |
|
(len == sizeof(synr) && |
|
! strncmp(line, synr, len - 1))) |
|
print = 1; |
|
continue; |
|
} |
|
} |
|
for (off = 0; off < len; off += nw) |
|
if ((nw = write(STDOUT_FILENO, line + off, |
|
len - off)) == -1 || nw == 0) { |
|
fclose(stream); |
|
syscall = "write"; |
|
goto fail; |
|
} |
|
} |
|
|
|
if (ferror(stream)) { |
|
fclose(stream); |
|
syscall = "fgetln"; |
|
goto fail; |
|
} |
|
|
|
done: |
|
fclose(stream); |
|
return(MANDOCLEVEL_OK); |
|
|
|
fail: |
|
fprintf(stderr, "%s: %s: SYSERR: %s: %s", |
|
progname, file, syscall, strerror(errno)); |
|
return(MANDOCLEVEL_SYSERR); |
|
} |
|
|
static int |
static int |
|
koptions(int *options, char *arg) |
|
{ |
|
|
|
if ( ! strcmp(arg, "utf-8")) { |
|
*options |= MPARSE_UTF8; |
|
*options &= ~MPARSE_LATIN1; |
|
} else if ( ! strcmp(arg, "iso-8859-1")) { |
|
*options |= MPARSE_LATIN1; |
|
*options &= ~MPARSE_UTF8; |
|
} else if ( ! strcmp(arg, "us-ascii")) { |
|
*options &= ~(MPARSE_UTF8 | MPARSE_LATIN1); |
|
} else { |
|
fprintf(stderr, "%s: -K%s: Bad argument\n", |
|
progname, arg); |
|
return(0); |
|
} |
|
return(1); |
|
} |
|
|
|
static int |
moptions(int *options, char *arg) |
moptions(int *options, char *arg) |
{ |
{ |
|
|
Line 446 toptions(struct curparse *curp, char *arg) |
|
Line 707 toptions(struct curparse *curp, char *arg) |
|
else if (0 == strcmp(arg, "locale")) |
else if (0 == strcmp(arg, "locale")) |
curp->outtype = OUTT_LOCALE; |
curp->outtype = OUTT_LOCALE; |
else if (0 == strcmp(arg, "xhtml")) |
else if (0 == strcmp(arg, "xhtml")) |
curp->outtype = OUTT_XHTML; |
curp->outtype = OUTT_HTML; |
else if (0 == strcmp(arg, "ps")) |
else if (0 == strcmp(arg, "ps")) |
curp->outtype = OUTT_PS; |
curp->outtype = OUTT_PS; |
else if (0 == strcmp(arg, "pdf")) |
else if (0 == strcmp(arg, "pdf")) |
Line 520 mmsg(enum mandocerr t, enum mandoclevel lvl, |
|
Line 781 mmsg(enum mandocerr t, enum mandoclevel lvl, |
|
fprintf(stderr, ": %s", msg); |
fprintf(stderr, ": %s", msg); |
|
|
fputc('\n', stderr); |
fputc('\n', stderr); |
|
} |
|
|
|
static void |
|
spawn_pager(void) |
|
{ |
|
#define MAX_PAGER_ARGS 16 |
|
char *argv[MAX_PAGER_ARGS]; |
|
const char *pager; |
|
char *cp; |
|
int fildes[2]; |
|
int argc; |
|
|
|
if (pipe(fildes) == -1) { |
|
fprintf(stderr, "%s: pipe: %s\n", |
|
progname, strerror(errno)); |
|
return; |
|
} |
|
|
|
switch (fork()) { |
|
case -1: |
|
fprintf(stderr, "%s: fork: %s\n", |
|
progname, strerror(errno)); |
|
exit((int)MANDOCLEVEL_SYSERR); |
|
case 0: |
|
close(fildes[0]); |
|
if (dup2(fildes[1], STDOUT_FILENO) == -1) { |
|
fprintf(stderr, "%s: dup output: %s\n", |
|
progname, strerror(errno)); |
|
exit((int)MANDOCLEVEL_SYSERR); |
|
} |
|
return; |
|
default: |
|
break; |
|
} |
|
|
|
/* The original 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); |
|
} |
|
|
|
pager = getenv("MANPAGER"); |
|
if (pager == NULL || *pager == '\0') |
|
pager = getenv("PAGER"); |
|
if (pager == NULL || *pager == '\0') |
|
pager = "/usr/bin/more -s"; |
|
cp = mandoc_strdup(pager); |
|
|
|
/* |
|
* Parse the pager command into words. |
|
* Intentionally do not do anything fancy here. |
|
*/ |
|
|
|
argc = 0; |
|
while (argc + 1 < MAX_PAGER_ARGS) { |
|
argv[argc++] = cp; |
|
cp = strchr(cp, ' '); |
|
if (cp == NULL) |
|
break; |
|
*cp++ = '\0'; |
|
while (*cp == ' ') |
|
cp++; |
|
if (*cp == '\0') |
|
break; |
|
} |
|
argv[argc] = NULL; |
|
|
|
/* Hand over to the pager. */ |
|
|
|
execvp(argv[0], argv); |
|
fprintf(stderr, "%s: exec: %s\n", |
|
progname, strerror(errno)); |
|
exit((int)MANDOCLEVEL_SYSERR); |
} |
} |