From c2dfbbd38125b2ba3608eb48ca3b5e2e23f819df Mon Sep 17 00:00:00 2001 From: uqs Date: Thu, 18 Oct 2012 09:55:16 +0000 Subject: Vendor import of mdocml 1.12.1 It is a suite of ISC licensed tools to compile and render mdoc/man pages and will replace groff for formatting manpages in the base system. http://mdocml.bsd.lv/ --- apropos.c | 239 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 239 insertions(+) create mode 100644 apropos.c (limited to 'apropos.c') diff --git a/apropos.c b/apropos.c new file mode 100644 index 0000000..9c3cae9 --- /dev/null +++ b/apropos.c @@ -0,0 +1,239 @@ +/* $Id: apropos.c,v 1.30 2012/03/24 02:18:51 kristaps Exp $ */ +/* + * Copyright (c) 2011, 2012 Kristaps Dzonsons + * Copyright (c) 2011 Ingo Schwarze + * + * 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. + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include + +#include +#include +#include +#include +#include +#include + +#include "apropos_db.h" +#include "mandoc.h" +#include "manpath.h" + +#define SINGLETON(_res, _sz) \ + ((_sz) && (_res)[0].matched && \ + (1 == (_sz) || 0 == (_res)[1].matched)) +#define EMPTYSET(_res, _sz) \ + ((0 == (_sz)) || 0 == (_res)[0].matched) + +static int cmp(const void *, const void *); +static void list(struct res *, size_t, void *); +static void usage(void); + +static char *progname; + +int +main(int argc, char *argv[]) +{ + int ch, rc, whatis, usecat; + struct res *res; + struct manpaths paths; + const char *prog; + pid_t pid; + char path[PATH_MAX]; + int fds[2]; + size_t terms, ressz, sz; + struct opts opts; + struct expr *e; + char *defpaths, *auxpaths, *conf_file, *cp; + extern int optind; + extern char *optarg; + + progname = strrchr(argv[0], '/'); + if (progname == NULL) + progname = argv[0]; + else + ++progname; + + whatis = 0 == strncmp(progname, "whatis", 6); + + memset(&paths, 0, sizeof(struct manpaths)); + memset(&opts, 0, sizeof(struct opts)); + + usecat = 0; + ressz = 0; + res = NULL; + auxpaths = defpaths = NULL; + conf_file = NULL; + e = NULL; + path[0] = '\0'; + + 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'): + opts.arch = optarg; + break; + case ('s'): + opts.cat = optarg; + break; + default: + usage(); + return(EXIT_FAILURE); + } + + argc -= optind; + argv += optind; + + if (0 == argc) + return(EXIT_SUCCESS); + + rc = 0; + + manpath_parse(&paths, conf_file, defpaths, auxpaths); + + e = whatis ? termcomp(argc, argv, &terms) : + exprcomp(argc, argv, &terms); + + if (NULL == e) { + fprintf(stderr, "%s: Bad expression\n", progname); + goto out; + } + + rc = apropos_search + (paths.sz, paths.paths, &opts, + e, terms, NULL, &ressz, &res, list); + + terms = 1; + + if (0 == rc) { + fprintf(stderr, "%s: Bad database\n", progname); + goto out; + } else if ( ! isatty(STDOUT_FILENO) || EMPTYSET(res, ressz)) + goto out; + + if ( ! SINGLETON(res, ressz)) { + printf("Which manpage would you like [1]? "); + fflush(stdout); + if (NULL != (cp = fgetln(stdin, &sz)) && + sz > 1 && '\n' == cp[--sz]) { + if ((ch = atoi(cp)) <= 0) + goto out; + terms = (size_t)ch; + } + } + + if (--terms < ressz && res[terms].matched) { + chdir(paths.paths[res[terms].volume]); + strlcpy(path, res[terms].file, PATH_MAX); + usecat = RESTYPE_CAT == res[terms].type; + } +out: + manpath_free(&paths); + resfree(res, ressz); + exprfree(e); + + if ('\0' == path[0]) + return(rc ? EXIT_SUCCESS : EXIT_FAILURE); + + 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]); + prog = NULL != getenv("MANPAGER") ? + getenv("MANPAGER") : + (NULL != getenv("PAGER") ? + getenv("PAGER") : "more"); + execlp(prog, prog, (char *)NULL); + perror(prog); + return(EXIT_FAILURE); + } + + dup2(fds[1], STDOUT_FILENO); + close(fds[0]); + prog = usecat ? "cat" : "mandoc"; + execlp(prog, prog, path, (char *)NULL); + perror(prog); + return(EXIT_FAILURE); +} + +/* ARGSUSED */ +static void +list(struct res *res, size_t sz, void *arg) +{ + size_t i; + + qsort(res, sz, sizeof(struct res), cmp); + + if (EMPTYSET(res, sz) || SINGLETON(res, sz)) + return; + + if ( ! isatty(STDOUT_FILENO)) + for (i = 0; i < sz && res[i].matched; i++) + printf("%s(%s%s%s) - %.70s\n", + res[i].title, res[i].cat, + *res[i].arch ? "/" : "", + *res[i].arch ? res[i].arch : "", + res[i].desc); + else + for (i = 0; i < sz && res[i].matched; i++) + printf("[%zu] %s(%s%s%s) - %.70s\n", i + 1, + res[i].title, res[i].cat, + *res[i].arch ? "/" : "", + *res[i].arch ? res[i].arch : "", + res[i].desc); +} + +static int +cmp(const void *p1, const void *p2) +{ + const struct res *r1 = p1; + const struct res *r2 = p2; + + if (0 == r1->matched) + return(1); + else if (0 == r2->matched) + return(1); + + return(strcasecmp(r1->title, r2->title)); +} + +static void +usage(void) +{ + + fprintf(stderr, "usage: %s " + "[-C file] " + "[-M manpath] " + "[-m manpath] " + "[-S arch] " + "[-s section] " + "expression ...\n", + progname); +} -- cgit v1.1