-/* $Id: main.c,v 1.168 2014/01/05 20:26:36 schwarze Exp $ */
+/* $Id: main.c,v 1.197 2014/11/11 02:10:04 schwarze Exp $ */
/*
- * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011, 2012 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010, 2011, 2012, 2014 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010 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
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
+
+#include <sys/types.h>
#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include "mandoc.h"
+#include "mandoc_aux.h"
#include "main.h"
#include "mdoc.h"
#include "man.h"
+#include "manpath.h"
+#include "mansearch.h"
#if !defined(__GNUC__) || (__GNUC__ < 2)
# if !defined(lint)
# endif
#endif /* !defined(__GNUC__) || (__GNUC__ < 2) */
+enum outmode {
+ OUTMODE_DEF = 0,
+ OUTMODE_FLN,
+ OUTMODE_LST,
+ OUTMODE_ALL,
+ OUTMODE_INT,
+ OUTMODE_ONE
+};
+
typedef void (*out_mdoc)(void *, const struct mdoc *);
typedef void (*out_man)(void *, const struct man *);
typedef void (*out_free)(void *);
OUTT_TREE, /* -Ttree */
OUTT_MAN, /* -Tman */
OUTT_HTML, /* -Thtml */
- OUTT_XHTML, /* -Txhtml */
OUTT_LINT, /* -Tlint */
OUTT_PS, /* -Tps */
OUTT_PDF /* -Tpdf */
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 */
+ enum outt outtype; /* which output to use */
out_mdoc outmdoc; /* mdoc output ptr */
- out_man outman; /* man 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 */
};
-static int moptions(enum mparset *, char *);
+static int koptions(int *, char *);
+static int moptions(int *, char *);
static void mmsg(enum mandocerr, enum mandoclevel,
const char *, int, int, const char *);
-static void parse(struct curparse *, int,
+static void parse(struct curparse *, int,
const char *, enum mandoclevel *);
+static enum mandoclevel passthrough(const char *, int, int);
+static void spawn_pager(void);
static int toptions(struct curparse *, char *);
-static void usage(void) __attribute__((noreturn));
+static void usage(enum argmode) __attribute__((noreturn));
static void version(void) __attribute__((noreturn));
static int woptions(struct curparse *, char *);
+static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
static const char *progname;
+
int
main(int argc, char *argv[])
{
- int c;
struct curparse curp;
- enum mparset type;
- enum mandoclevel rc;
+ struct mansearch search;
+ struct manpaths paths;
+ char *conf_file, *defpaths, *auxpaths;
char *defos;
+#if HAVE_SQLITE3
+ struct manpage *res, *resp;
+ size_t isec, i, sz;
+ int prio, best_prio;
+ char sec;
+#endif
+ enum mandoclevel rc;
+ enum outmode outmode;
+ pid_t child_pid;
+ int fd;
+ int show_usage;
+ int use_pager;
+ int synopsis_only;
+ int options;
+ int c;
progname = strrchr(argv[0], '/');
if (progname == NULL)
else
++progname;
- memset(&curp, 0, sizeof(struct curparse));
+ /* Search options. */
+
+ memset(&paths, 0, sizeof(struct manpaths));
+ conf_file = defpaths = auxpaths = NULL;
+
+ memset(&search, 0, sizeof(struct mansearch));
+ search.outkey = "Nd";
- type = MPARSE_AUTO;
+ if (strcmp(progname, "man") == 0)
+ search.argmode = ARG_NAME;
+ else if (strncmp(progname, "apropos", 7) == 0)
+ search.argmode = ARG_EXPR;
+ else if (strncmp(progname, "whatis", 6) == 0)
+ search.argmode = ARG_WORD;
+ else
+ search.argmode = ARG_FILE;
+
+ /* Parser and formatter options. */
+
+ memset(&curp, 0, sizeof(struct curparse));
curp.outtype = OUTT_ASCII;
curp.wlevel = MANDOCLEVEL_FATAL;
+ options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
defos = NULL;
- /* LINTED */
- while (-1 != (c = getopt(argc, argv, "I:m:O:T:VW:")))
+ use_pager = 1;
+ show_usage = 0;
+ synopsis_only = 0;
+ outmode = OUTMODE_DEF;
+
+ while (-1 != (c = getopt(argc, argv,
+ "aC:cfhI:iK:klM:m:O:S:s:T:VW:w"))) {
switch (c) {
- case ('I'):
+ case 'a':
+ outmode = OUTMODE_ALL;
+ break;
+ case 'C':
+ conf_file = optarg;
+ break;
+ case 'c':
+ use_pager = 0;
+ break;
+ case 'f':
+ search.argmode = ARG_WORD;
+ break;
+ case 'h':
+ (void)strlcat(curp.outopts, "synopsis,", BUFSIZ);
+ synopsis_only = 1;
+ outmode = OUTMODE_ALL;
+ break;
+ case 'I':
if (strncmp(optarg, "os=", 3)) {
- fprintf(stderr, "-I%s: Bad argument\n",
- optarg);
+ fprintf(stderr,
+ "%s: -I%s: Bad argument\n",
+ progname, optarg);
return((int)MANDOCLEVEL_BADARG);
}
if (defos) {
- fprintf(stderr, "-I%s: Duplicate argument\n",
- optarg);
+ fprintf(stderr,
+ "%s: -I%s: Duplicate argument\n",
+ progname, optarg);
return((int)MANDOCLEVEL_BADARG);
}
defos = mandoc_strdup(optarg + 3);
break;
- case ('m'):
- if ( ! moptions(&type, optarg))
+ case 'i':
+ outmode = OUTMODE_INT;
+ break;
+ case 'K':
+ if ( ! koptions(&options, optarg))
return((int)MANDOCLEVEL_BADARG);
break;
- case ('O'):
+ case 'k':
+ search.argmode = ARG_EXPR;
+ break;
+ case 'l':
+ search.argmode = ARG_FILE;
+ outmode = OUTMODE_ALL;
+ break;
+ case 'M':
+ defpaths = optarg;
+ break;
+ case 'm':
+ auxpaths = optarg;
+ break;
+ case 'O':
+ search.outkey = optarg;
(void)strlcat(curp.outopts, optarg, BUFSIZ);
(void)strlcat(curp.outopts, ",", BUFSIZ);
break;
- case ('T'):
+ case 'S':
+ search.arch = optarg;
+ break;
+ case 's':
+ search.sec = optarg;
+ break;
+ case 'T':
if ( ! toptions(&curp, optarg))
return((int)MANDOCLEVEL_BADARG);
break;
- case ('W'):
+ case 'W':
if ( ! woptions(&curp, optarg))
return((int)MANDOCLEVEL_BADARG);
break;
- case ('V'):
+ case 'w':
+ outmode = OUTMODE_FLN;
+ break;
+ case 'V':
version();
/* NOTREACHED */
default:
- usage();
- /* NOTREACHED */
+ show_usage = 1;
+ break;
}
+ }
+
+ if (show_usage)
+ usage(search.argmode);
+
+ /* Postprocess options. */
+
+ if (outmode == OUTMODE_DEF) {
+ switch (search.argmode) {
+ case ARG_FILE:
+ outmode = OUTMODE_ALL;
+ use_pager = 0;
+ break;
+ case ARG_NAME:
+ outmode = OUTMODE_ONE;
+ break;
+ default:
+ outmode = OUTMODE_LST;
+ break;
+ }
+ }
+
+ /* Parse arguments. */
+
+ argc -= optind;
+ argv += optind;
+#if HAVE_SQLITE3
+ resp = NULL;
+#endif
+
+ /* 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"))) {
+ search.sec = argv[0];
+ argv++;
+ argc--;
+ }
+
+ rc = MANDOCLEVEL_OK;
+
+ /* man(1), whatis(1), apropos(1) */
+
+ if (search.argmode != ARG_FILE) {
+#if HAVE_SQLITE3
+ if (argc == 0)
+ usage(search.argmode);
+
+ /* Access the mandoc database. */
+
+ manpath_parse(&paths, conf_file, defpaths, auxpaths);
+ mansearch_setup(1);
+ if( ! mansearch(&search, &paths, argc, argv, &res, &sz))
+ usage(search.argmode);
+ resp = res;
+
+ if (sz == 0) {
+ if (search.argmode == ARG_NAME)
+ fprintf(stderr, "%s: No entry for %s "
+ "in the manual.\n", progname, argv[0]);
+ rc = MANDOCLEVEL_BADARG;
+ goto out;
+ }
+
+ /*
+ * For standard man(1) and -a output mode,
+ * prepare for copying filename pointers
+ * into the program parameter array.
+ */
+
+ if (outmode == OUTMODE_ONE) {
+ argc = 1;
+ best_prio = 10;
+ } else if (outmode == OUTMODE_ALL)
+ argc = (int)sz;
+
+ /* Iterate all matching manuals. */
+
+ for (i = 0; i < sz; i++) {
+ if (outmode == OUTMODE_FLN)
+ puts(res[i].file);
+ else if (outmode == OUTMODE_LST)
+ printf("%s - %s\n", res[i].names,
+ res[i].output == NULL ? "" :
+ res[i].output);
+ else if (outmode == OUTMODE_ONE) {
+ /* Search for the best section. */
+ isec = strcspn(res[i].file, "123456789");
+ sec = res[i].file[isec];
+ if ('\0' == sec)
+ continue;
+ prio = sec_prios[sec - '1'];
+ if (prio >= best_prio)
+ continue;
+ best_prio = prio;
+ resp = res + i;
+ }
+ }
+
+ /*
+ * 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.
+ */
+
+ if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
+ goto out;
+#else
+ fputs("mandoc: database support not compiled in\n",
+ stderr);
+ return((int)MANDOCLEVEL_BADARG);
+#endif
+ }
- curp.mp = mparse_alloc(type, curp.wlevel, mmsg, defos, 0);
+ /* mandoc(1) */
+
+ if ( ! moptions(&options, auxpaths))
+ return((int)MANDOCLEVEL_BADARG);
+
+ 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.
if (OUTT_MAN == curp.outtype)
mparse_keep(curp.mp);
- argc -= optind;
- argv += optind;
+ if (argc == 0)
+ parse(&curp, STDIN_FILENO, "<stdin>", &rc);
- rc = MANDOCLEVEL_OK;
+ while (argc) {
+#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 (NULL == *argv)
- parse(&curp, STDIN_FILENO, "<stdin>", &rc);
+ if (child_pid &&
+ mparse_wait(curp.mp, child_pid) != MANDOCLEVEL_OK)
+ rc = MANDOCLEVEL_SYSERR;
- while (*argv) {
- parse(&curp, -1, *argv, &rc);
if (MANDOCLEVEL_OK != rc && curp.wstop)
break;
- ++argv;
+ argc--;
}
if (curp.outfree)
(*curp.outfree)(curp.outdata);
- if (curp.mp)
- mparse_free(curp.mp);
+ mparse_free(curp.mp);
+ mchars_free(curp.mchars);
+
+#if HAVE_SQLITE3
+out:
+ if (search.argmode != ARG_FILE) {
+ manpath_free(&paths);
+ mansearch_free(res, sz);
+ mansearch_setup(0);
+ }
+#endif
+
free(defos);
return((int)rc);
version(void)
{
- printf("%s %s\n", progname, VERSION);
+ printf("mandoc %s\n", VERSION);
exit((int)MANDOCLEVEL_OK);
}
static void
-usage(void)
+usage(enum argmode argmode)
{
- fprintf(stderr, "usage: %s "
- "[-V] "
- "[-Ios=name] "
- "[-mformat] "
- "[-Ooption] "
- "[-Toutput] "
- "[-Wlevel]\n"
- "\t [file ...]\n",
- progname);
-
+ switch (argmode) {
+ case ARG_FILE:
+ fputs("usage: mandoc [-acfhklV] [-Ios=name] "
+ "[-Kencoding] [-mformat] [-Ooption]\n"
+ "\t [-Toutput] [-Wlevel] [file ...]\n", stderr);
+ break;
+ case ARG_NAME:
+ fputs("usage: man [-acfhklVw] [-C file] "
+ "[-M path] [-m path] [-S arch] [-s section]\n"
+ "\t [section] name ...\n", stderr);
+ break;
+ case ARG_WORD:
+ fputs("usage: whatis [-acfhklVw] [-C file] "
+ "[-M path] [-m path] [-O outkey] [-S arch]\n"
+ "\t [-s section] name ...\n", stderr);
+ break;
+ case ARG_EXPR:
+ fputs("usage: apropos [-acfhklVw] [-C file] "
+ "[-M path] [-m path] [-O outkey] [-S arch]\n"
+ "\t [-s section] expression ...\n", stderr);
+ break;
+ }
exit((int)MANDOCLEVEL_BADARG);
}
static void
-parse(struct curparse *curp, int fd,
- const char *file, enum mandoclevel *level)
+parse(struct curparse *curp, int fd, const char *file,
+ enum mandoclevel *level)
{
enum mandoclevel rc;
struct mdoc *mdoc;
if ( ! (curp->outman && curp->outmdoc)) {
switch (curp->outtype) {
- case (OUTT_XHTML):
- curp->outdata = xhtml_alloc(curp->outopts);
- curp->outfree = html_free;
- break;
- case (OUTT_HTML):
- curp->outdata = html_alloc(curp->outopts);
+ case OUTT_HTML:
+ curp->outdata = html_alloc(curp->mchars,
+ curp->outopts);
curp->outfree = html_free;
break;
- case (OUTT_UTF8):
- curp->outdata = utf8_alloc(curp->outopts);
+ case OUTT_UTF8:
+ curp->outdata = utf8_alloc(curp->mchars,
+ curp->outopts);
curp->outfree = ascii_free;
break;
- case (OUTT_LOCALE):
- curp->outdata = locale_alloc(curp->outopts);
+ case OUTT_LOCALE:
+ curp->outdata = locale_alloc(curp->mchars,
+ curp->outopts);
curp->outfree = ascii_free;
break;
- case (OUTT_ASCII):
- curp->outdata = ascii_alloc(curp->outopts);
+ case OUTT_ASCII:
+ curp->outdata = ascii_alloc(curp->mchars,
+ curp->outopts);
curp->outfree = ascii_free;
break;
- case (OUTT_PDF):
- curp->outdata = pdf_alloc(curp->outopts);
+ case OUTT_PDF:
+ curp->outdata = pdf_alloc(curp->mchars,
+ curp->outopts);
curp->outfree = pspdf_free;
break;
- case (OUTT_PS):
- curp->outdata = ps_alloc(curp->outopts);
+ case OUTT_PS:
+ curp->outdata = ps_alloc(curp->mchars,
+ curp->outopts);
curp->outfree = pspdf_free;
break;
default:
}
switch (curp->outtype) {
- case (OUTT_HTML):
- /* FALLTHROUGH */
- case (OUTT_XHTML):
+ case OUTT_HTML:
curp->outman = html_man;
curp->outmdoc = html_mdoc;
break;
- case (OUTT_TREE):
+ case OUTT_TREE:
curp->outman = tree_man;
curp->outmdoc = tree_mdoc;
break;
- case (OUTT_MAN):
+ case OUTT_MAN:
curp->outmdoc = man_mdoc;
curp->outman = man_man;
break;
- case (OUTT_PDF):
+ case OUTT_PDF:
/* FALLTHROUGH */
- case (OUTT_ASCII):
+ case OUTT_ASCII:
/* FALLTHROUGH */
- case (OUTT_UTF8):
+ case OUTT_UTF8:
/* FALLTHROUGH */
- case (OUTT_LOCALE):
+ case OUTT_LOCALE:
/* FALLTHROUGH */
- case (OUTT_PS):
+ case OUTT_PS:
curp->outman = terminal_man;
curp->outmdoc = terminal_mdoc;
break;
}
}
- mparse_result(curp->mp, &mdoc, &man);
+ mparse_result(curp->mp, &mdoc, &man, NULL);
/* Execute the out device, if it exists. */
*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
+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(enum mparset *tflags, char *arg)
+moptions(int *options, char *arg)
{
- if (0 == strcmp(arg, "doc"))
- *tflags = MPARSE_MDOC;
+ if (arg == NULL)
+ /* nothing to do */;
+ else if (0 == strcmp(arg, "doc"))
+ *options |= MPARSE_MDOC;
else if (0 == strcmp(arg, "andoc"))
- *tflags = MPARSE_AUTO;
+ /* nothing to do */;
else if (0 == strcmp(arg, "an"))
- *tflags = MPARSE_MAN;
+ *options |= MPARSE_MAN;
else {
- fprintf(stderr, "%s: Bad argument\n", arg);
+ fprintf(stderr, "%s: -m%s: Bad argument\n",
+ progname, arg);
return(0);
}
else if (0 == strcmp(arg, "locale"))
curp->outtype = OUTT_LOCALE;
else if (0 == strcmp(arg, "xhtml"))
- curp->outtype = OUTT_XHTML;
+ curp->outtype = OUTT_HTML;
else if (0 == strcmp(arg, "ps"))
curp->outtype = OUTT_PS;
else if (0 == strcmp(arg, "pdf"))
curp->outtype = OUTT_PDF;
else {
- fprintf(stderr, "%s: Bad argument\n", arg);
+ fprintf(stderr, "%s: -T%s: Bad argument\n",
+ progname, arg);
return(0);
}
woptions(struct curparse *curp, char *arg)
{
char *v, *o;
- const char *toks[6];
+ const char *toks[6];
toks[0] = "stop";
toks[1] = "all";
while (*arg) {
o = arg;
switch (getsubopt(&arg, UNCONST(toks), &v)) {
- case (0):
+ case 0:
curp->wstop = 1;
break;
- case (1):
+ case 1:
/* FALLTHROUGH */
- case (2):
+ case 2:
curp->wlevel = MANDOCLEVEL_WARNING;
break;
- case (3):
+ case 3:
curp->wlevel = MANDOCLEVEL_ERROR;
break;
- case (4):
+ case 4:
curp->wlevel = MANDOCLEVEL_FATAL;
break;
default:
- fprintf(stderr, "-W%s: Bad argument\n", o);
+ fprintf(stderr, "%s: -W%s: Bad argument\n",
+ progname, o);
return(0);
}
}
}
static void
-mmsg(enum mandocerr t, enum mandoclevel lvl,
+mmsg(enum mandocerr t, enum mandoclevel lvl,
const char *file, int line, int col, const char *msg)
{
+ const char *mparse_msg;
- fprintf(stderr, "%s:%d:%d: %s: %s",
- file, line, col + 1,
- mparse_strlevel(lvl),
- mparse_strerror(t));
+ fprintf(stderr, "%s: %s:", progname, file);
+
+ if (line)
+ fprintf(stderr, "%d:%d:", line, col + 1);
+
+ fprintf(stderr, " %s", mparse_strlevel(lvl));
+
+ if (NULL != (mparse_msg = mparse_strerror(t)))
+ fprintf(stderr, ": %s", mparse_msg);
if (msg)
fprintf(stderr, ": %s", msg);
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);
+}
git.ckatri.com / mandoc.git / blobdiff