diff options
Diffstat (limited to 'shell_cmds/find/main.c')
| -rw-r--r-- | shell_cmds/find/main.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/shell_cmds/find/main.c b/shell_cmds/find/main.c new file mode 100644 index 0000000..e95e648 --- /dev/null +++ b/shell_cmds/find/main.c @@ -0,0 +1,166 @@ +/*- + * Copyright (c) 1990, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Cimarron D. Taylor of the University of California, Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char copyright[] = +"@(#) Copyright (c) 1990, 1993, 1994\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 5/4/95"; +#endif +#endif /* not lint */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/find/main.c,v 1.23 2011/12/10 18:11:06 ed Exp $"); + +#include <sys/types.h> +#include <sys/stat.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <fts.h> +#include <locale.h> +#include <regex.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +#include "find.h" + +time_t now; /* time find was run */ +int dotfd; /* starting directory */ +int ftsoptions; /* options for the ftsopen(3) call */ +int isdeprecated; /* using deprecated syntax */ +int isdepth; /* do directories on post-order visit */ +int isoutput; /* user specified output operator */ +int issort; /* do hierarchies in lexicographical order */ +int isxargs; /* don't permit xargs delimiting chars */ +int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */ +int regexp_flags = REG_BASIC; /* use the "basic" regexp by default*/ + +static void usage(void); + +int +main(int argc, char *argv[]) +{ + char **p, **start; + int Hflag, Lflag, ch; + + (void)setlocale(LC_ALL, ""); + + (void)time(&now); /* initialize the time-of-day */ + + p = start = argv; + Hflag = Lflag = 0; + ftsoptions = FTS_NOSTAT | FTS_PHYSICAL; + while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1) + switch (ch) { + case 'E': + regexp_flags |= REG_EXTENDED; + break; + case 'H': + Hflag = 1; + Lflag = 0; + break; + case 'L': + Lflag = 1; + Hflag = 0; + break; + case 'P': + Hflag = Lflag = 0; + break; + case 'X': + isxargs = 1; + break; + case 'd': + isdepth = 1; + break; + case 'f': + *p++ = optarg; + break; + case 's': + issort = 1; + break; + case 'x': + ftsoptions |= FTS_XDEV; + break; + case '?': + default: + usage(); + } + + argc -= optind; + argv += optind; + + if (Hflag) + ftsoptions |= FTS_COMFOLLOW; + if (Lflag) { + ftsoptions &= ~FTS_PHYSICAL; + ftsoptions |= FTS_LOGICAL; + } + + /* + * Find first option to delimit the file list. The first argument + * that starts with a -, or is a ! or a ( must be interpreted as a + * part of the find expression, according to POSIX .2. + */ + for (; *argv != NULL; *p++ = *argv++) { + if (argv[0][0] == '-') + break; + if ((argv[0][0] == '!' || argv[0][0] == '(') && + argv[0][1] == '\0') + break; + } + + if (p == start) + usage(); + *p = NULL; + + if ((dotfd = open(".", O_RDONLY, 0)) < 0) + err(1, "."); + + exit(find_execute(find_formplan(argv), start)); +} + +static void +usage(void) +{ + (void)fprintf(stderr, "%s\n%s\n", +"usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]", +" find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]"); + exit(1); +} |