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/* $Id: manpage.c,v 1.14 2016/07/09 15:24:19 schwarze Exp $ */
/*
* Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2013 Ingo Schwarze <schwarze@openbsd.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 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"
#include <sys/types.h>
#include <assert.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "manconf.h"
#include "mansearch.h"
static void show(const char *, const char *);
int
main(int argc, char *argv[])
{
int ch, term;
size_t i, sz, linesz;
ssize_t len;
struct mansearch search;
struct manpage *res;
char *conf_file, *defpaths, *auxpaths, *line;
char buf[PATH_MAX];
const char *cmd;
struct manconf conf;
char *progname;
extern char *optarg;
extern int optind;
term = isatty(STDIN_FILENO) && isatty(STDOUT_FILENO);
progname = strrchr(argv[0], '/');
if (progname == NULL)
progname = argv[0];
else
++progname;
auxpaths = defpaths = conf_file = NULL;
memset(&conf, 0, sizeof(conf));
memset(&search, 0, sizeof(struct mansearch));
while (-1 != (ch = getopt(argc, argv, "C:M:m:S:s:")))
switch (ch) {
case ('C'):
conf_file = optarg;
break;
case ('M'):
defpaths = optarg;
break;
case ('m'):
auxpaths = optarg;
break;
case ('S'):
search.arch = optarg;
break;
case ('s'):
search.sec = optarg;
break;
default:
goto usage;
}
argc -= optind;
argv += optind;
if (0 == argc)
goto usage;
search.outkey = "Nd";
search.argmode = ARG_EXPR;
manconf_parse(&conf, conf_file, defpaths, auxpaths);
ch = mansearch(&search, &conf.manpath, argc, argv, &res, &sz);
manconf_free(&conf);
if (0 == ch)
goto usage;
if (0 == sz) {
free(res);
return EXIT_FAILURE;
} else if (1 == sz && term) {
i = 1;
goto show;
} else if (NULL == res)
return EXIT_FAILURE;
for (i = 0; i < sz; i++) {
printf("%6zu %s: %s\n",
i + 1, res[i].names, res[i].output);
free(res[i].names);
free(res[i].output);
}
if (0 == term) {
for (i = 0; i < sz; i++)
free(res[i].file);
free(res);
return EXIT_SUCCESS;
}
i = 1;
printf("Enter a choice [1]: ");
fflush(stdout);
line = NULL;
linesz = 0;
if ((len = getline(&line, &linesz, stdin)) != -1) {
if ('\n' == line[--len] && len > 0) {
line[len] = '\0';
if ((i = atoi(line)) < 1 || i > sz)
i = 0;
}
}
free(line);
if (0 == i) {
for (i = 0; i < sz; i++)
free(res[i].file);
free(res);
return EXIT_SUCCESS;
}
show:
cmd = res[i - 1].form ? "mandoc" : "cat";
strlcpy(buf, res[i - 1].file, PATH_MAX);
for (i = 0; i < sz; i++)
free(res[i].file);
free(res);
show(cmd, buf);
/* NOTREACHED */
usage:
fprintf(stderr, "usage: %s [-C conf] "
"[-M paths] "
"[-m paths] "
"[-S arch] "
"[-s section] "
"expr ...\n",
progname);
return EXIT_FAILURE;
}
static void
show(const char *cmd, const char *file)
{
int fds[2];
pid_t pid;
if (-1 == pipe(fds)) {
perror(NULL);
exit(EXIT_FAILURE);
}
if (-1 == (pid = fork())) {
perror(NULL);
exit(EXIT_FAILURE);
} else if (pid > 0) {
dup2(fds[0], STDIN_FILENO);
close(fds[1]);
cmd = NULL != getenv("MANPAGER") ?
getenv("MANPAGER") :
(NULL != getenv("PAGER") ?
getenv("PAGER") : "more");
execlp(cmd, cmd, (char *)NULL);
perror(cmd);
exit(EXIT_FAILURE);
}
dup2(fds[1], STDOUT_FILENO);
close(fds[0]);
execlp(cmd, cmd, file, (char *)NULL);
perror(cmd);
exit(EXIT_FAILURE);
}
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