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1.1 ! kristaps 1: /* $Id: mandocdb.c,v 1.46 2012/03/23 06:52:17 kristaps Exp $ */
! 2: /*
! 3: * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
! 4: *
! 5: * Permission to use, copy, modify, and distribute this software for any
! 6: * purpose with or without fee is hereby granted, provided that the above
! 7: * copyright notice and this permission notice appear in all copies.
! 8: *
! 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 16: */
! 17: #ifdef HAVE_CONFIG_H
! 18: #include "config.h"
! 19: #endif
! 20: #include <sys/param.h>
! 21:
! 22: #include <assert.h>
! 23: #include <getopt.h>
! 24: #include <stdio.h>
! 25: #include <stdlib.h>
! 26: #include <string.h>
! 27: #include <unistd.h>
! 28:
! 29: #include "manpath.h"
! 30: #include "mansearch.h"
! 31:
! 32: static void show(const char *, const char *);
! 33:
! 34: int
! 35: main(int argc, char *argv[])
! 36: {
! 37: int ch, term;
! 38: size_t i, sz, len;
! 39: struct manpage *res;
! 40: char *conf_file, *defpaths, *auxpaths, *cp,
! 41: *arch, *sec;
! 42: char buf[MAXPATHLEN];
! 43: const char *cmd;
! 44: struct manpaths paths;
! 45: char *progname;
! 46: extern char *optarg;
! 47: extern int optind;
! 48:
! 49: term = isatty(STDIN_FILENO) && isatty(STDOUT_FILENO);
! 50:
! 51: progname = strrchr(argv[0], '/');
! 52: if (progname == NULL)
! 53: progname = argv[0];
! 54: else
! 55: ++progname;
! 56:
! 57: auxpaths = defpaths = conf_file = arch = sec = NULL;
! 58: memset(&paths, 0, sizeof(struct manpaths));
! 59:
! 60: while (-1 != (ch = getopt(argc, argv, "C:M:m:S:s:")))
! 61: switch (ch) {
! 62: case ('C'):
! 63: conf_file = optarg;
! 64: break;
! 65: case ('M'):
! 66: defpaths = optarg;
! 67: break;
! 68: case ('m'):
! 69: auxpaths = optarg;
! 70: break;
! 71: case ('S'):
! 72: arch = optarg;
! 73: break;
! 74: case ('s'):
! 75: sec = optarg;
! 76: break;
! 77: default:
! 78: goto usage;
! 79: }
! 80:
! 81: argc -= optind;
! 82: argv += optind;
! 83:
! 84: if (0 == argc)
! 85: goto usage;
! 86:
! 87: manpath_parse(&paths, conf_file, defpaths, auxpaths);
! 88: ch = mansearch(&paths, arch, sec, argc, argv, &res, &sz);
! 89: manpath_free(&paths);
! 90:
! 91: if (0 == ch)
! 92: goto usage;
! 93:
! 94: if (0 == sz) {
! 95: free(res);
! 96: return(EXIT_FAILURE);
! 97: } else if (1 == sz && term) {
! 98: i = 1;
! 99: goto show;
! 100: } else if (NULL == res)
! 101: return(EXIT_FAILURE);
! 102:
! 103: for (i = 0; i < sz; i++) {
! 104: printf("%6zu %s: %s\n",
! 105: i + 1, res[i].file, res[i].desc);
! 106: free(res[i].desc);
! 107: }
! 108:
! 109: if (0 == term) {
! 110: free(res);
! 111: return(EXIT_SUCCESS);
! 112: }
! 113:
! 114: i = 1;
! 115: printf("Enter a choice [1]: ");
! 116: fflush(stdout);
! 117:
! 118: if (NULL != (cp = fgetln(stdin, &len)))
! 119: if ('\n' == cp[--len] && len > 0) {
! 120: cp[len] = '\0';
! 121: if ((i = atoi(cp)) < 1 || i > sz)
! 122: i = 0;
! 123: }
! 124:
! 125: if (0 == i) {
! 126: free(res);
! 127: return(EXIT_SUCCESS);
! 128: }
! 129: show:
! 130: cmd = res[i - 1].form ? "mandoc" : "cat";
! 131: strlcpy(buf, res[i - 1].file, MAXPATHLEN);
! 132: free(res);
! 133:
! 134: show(cmd, buf);
! 135: /* NOTREACHED */
! 136: usage:
! 137: fprintf(stderr, "usage: %s [-C conf] "
! 138: "[-M paths] "
! 139: "[-m paths] "
! 140: "[-S arch] "
! 141: "[-s section] "
! 142: "expr ...\n",
! 143: progname);
! 144: return(EXIT_FAILURE);
! 145: }
! 146:
! 147: static void
! 148: show(const char *cmd, const char *file)
! 149: {
! 150: int fds[2];
! 151: pid_t pid;
! 152:
! 153: if (-1 == pipe(fds)) {
! 154: perror(NULL);
! 155: exit(EXIT_FAILURE);
! 156: }
! 157:
! 158: if (-1 == (pid = fork())) {
! 159: perror(NULL);
! 160: exit(EXIT_FAILURE);
! 161: } else if (pid > 0) {
! 162: dup2(fds[0], STDIN_FILENO);
! 163: close(fds[1]);
! 164: cmd = NULL != getenv("MANPAGER") ?
! 165: getenv("MANPAGER") :
! 166: (NULL != getenv("PAGER") ?
! 167: getenv("PAGER") : "more");
! 168: execlp(cmd, cmd, (char *)NULL);
! 169: perror(cmd);
! 170: exit(EXIT_FAILURE);
! 171: }
! 172:
! 173: dup2(fds[1], STDOUT_FILENO);
! 174: close(fds[0]);
! 175: execlp(cmd, cmd, file, (char *)NULL);
! 176: perror(cmd);
! 177: exit(EXIT_FAILURE);
! 178: }