diff options
Diffstat (limited to 'usr.bin/tar/cmdline.c')
| -rw-r--r-- | usr.bin/tar/cmdline.c | 385 |
1 files changed, 0 insertions, 385 deletions
diff --git a/usr.bin/tar/cmdline.c b/usr.bin/tar/cmdline.c deleted file mode 100644 index f043155..0000000 --- a/usr.bin/tar/cmdline.c +++ /dev/null @@ -1,385 +0,0 @@ -/*- - * Copyright (c) 2003-2008 Tim Kientzle - * All rights reserved. - * - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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. - */ - -/* - * Command line parser for tar. - */ - -#include "bsdtar_platform.h" -__FBSDID("$FreeBSD$"); - -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_STRING_H -#include <string.h> -#endif - -#include "bsdtar.h" -#include "err.h" - -/* - * Short options for tar. Please keep this sorted. - */ -static const char *short_options - = "Bb:C:cf:HhI:JjkLlmnOoPpqrSs:T:tUuvW:wX:xyZz"; - -/* - * Long options for tar. Please keep this list sorted. - * - * The symbolic names for options that lack a short equivalent are - * defined in bsdtar.h. Also note that so far I've found no need - * to support optional arguments to long options. That would be - * a small change to the code below. - */ - -static struct option { - const char *name; - int required; /* 1 if this option requires an argument. */ - int equivalent; /* Equivalent short option. */ -} tar_longopts[] = { - { "absolute-paths", 0, 'P' }, - { "append", 0, 'r' }, - { "block-size", 1, 'b' }, - { "bunzip2", 0, 'j' }, - { "bzip", 0, 'j' }, - { "bzip2", 0, 'j' }, - { "cd", 1, 'C' }, - { "check-links", 0, OPTION_CHECK_LINKS }, - { "chroot", 0, OPTION_CHROOT }, - { "compress", 0, 'Z' }, - { "confirmation", 0, 'w' }, - { "create", 0, 'c' }, - { "dereference", 0, 'L' }, - { "directory", 1, 'C' }, - { "exclude", 1, OPTION_EXCLUDE }, - { "exclude-from", 1, 'X' }, - { "extract", 0, 'x' }, - { "fast-read", 0, 'q' }, - { "file", 1, 'f' }, - { "files-from", 1, 'T' }, - { "format", 1, OPTION_FORMAT }, - { "gid", 1, OPTION_GID }, - { "gname", 1, OPTION_GNAME }, - { "gunzip", 0, 'z' }, - { "gzip", 0, 'z' }, - { "help", 0, OPTION_HELP }, - { "include", 1, OPTION_INCLUDE }, - { "interactive", 0, 'w' }, - { "insecure", 0, 'P' }, - { "keep-newer-files", 0, OPTION_KEEP_NEWER_FILES }, - { "keep-old-files", 0, 'k' }, - { "list", 0, 't' }, - { "lzma", 0, OPTION_LZMA }, - { "modification-time", 0, 'm' }, - { "newer", 1, OPTION_NEWER_CTIME }, - { "newer-ctime", 1, OPTION_NEWER_CTIME }, - { "newer-ctime-than", 1, OPTION_NEWER_CTIME_THAN }, - { "newer-mtime", 1, OPTION_NEWER_MTIME }, - { "newer-mtime-than", 1, OPTION_NEWER_MTIME_THAN }, - { "newer-than", 1, OPTION_NEWER_CTIME_THAN }, - { "nodump", 0, OPTION_NODUMP }, - { "norecurse", 0, 'n' }, - { "no-recursion", 0, 'n' }, - { "no-same-owner", 0, OPTION_NO_SAME_OWNER }, - { "no-same-permissions", 0, OPTION_NO_SAME_PERMISSIONS }, - { "null", 0, OPTION_NULL }, - { "numeric-owner", 0, OPTION_NUMERIC_OWNER }, - { "one-file-system", 0, OPTION_ONE_FILE_SYSTEM }, - { "options", 1, OPTION_OPTIONS }, - { "posix", 0, OPTION_POSIX }, - { "preserve-permissions", 0, 'p' }, - { "read-full-blocks", 0, 'B' }, - { "same-owner", 0, OPTION_SAME_OWNER }, - { "same-permissions", 0, 'p' }, - { "strip-components", 1, OPTION_STRIP_COMPONENTS }, - { "to-stdout", 0, 'O' }, - { "totals", 0, OPTION_TOTALS }, - { "uid", 1, OPTION_UID }, - { "uname", 1, OPTION_UNAME }, - { "uncompress", 0, 'Z' }, - { "unlink", 0, 'U' }, - { "unlink-first", 0, 'U' }, - { "update", 0, 'u' }, - { "use-compress-program", 1, OPTION_USE_COMPRESS_PROGRAM }, - { "verbose", 0, 'v' }, - { "version", 0, OPTION_VERSION }, - { "xz", 0, 'J' }, - { NULL, 0, 0 } -}; - -/* - * This getopt implementation has two key features that common - * getopt_long() implementations lack. Apart from those, it's a - * straightforward option parser, considerably simplified by not - * needing to support the wealth of exotic getopt_long() features. It - * has, of course, been shamelessly tailored for bsdtar. (If you're - * looking for a generic getopt_long() implementation for your - * project, I recommend Gregory Pietsch's public domain getopt_long() - * implementation.) The two additional features are: - * - * Old-style tar arguments: The original tar implementation treated - * the first argument word as a list of single-character option - * letters. All arguments follow as separate words. For example, - * tar xbf 32 /dev/tape - * Here, the "xbf" is three option letters, "32" is the argument for - * "b" and "/dev/tape" is the argument for "f". We support this usage - * if the first command-line argument does not begin with '-'. We - * also allow regular short and long options to follow, e.g., - * tar xbf 32 /dev/tape -P --format=pax - * - * -W long options: There's an obscure GNU convention (only rarely - * supported even there) that allows "-W option=argument" as an - * alternative way to support long options. This was supported in - * early bsdtar as a way to access long options on platforms that did - * not support getopt_long() and is preserved here for backwards - * compatibility. (Of course, if I'd started with a custom - * command-line parser from the beginning, I would have had normal - * long option support on every platform so that hack wouldn't have - * been necessary. Oh, well. Some mistakes you just have to live - * with.) - * - * TODO: We should be able to use this to pull files and intermingled - * options (such as -C) from the command line in write mode. That - * will require a little rethinking of the argument handling in - * bsdtar.c. - * - * TODO: If we want to support arbitrary command-line options from -T - * input (as GNU tar does), we may need to extend this to handle option - * words from sources other than argv/arc. I'm not really sure if I - * like that feature of GNU tar, so it's certainly not a priority. - */ - -int -bsdtar_getopt(struct bsdtar *bsdtar) -{ - enum { state_start = 0, state_old_tar, state_next_word, - state_short, state_long }; - static int state = state_start; - static char *opt_word; - - const struct option *popt, *match = NULL, *match2 = NULL; - const char *p, *long_prefix = "--"; - size_t optlength; - int opt = '?'; - int required = 0; - - bsdtar->optarg = NULL; - - /* First time through, initialize everything. */ - if (state == state_start) { - /* Skip program name. */ - ++bsdtar->argv; - --bsdtar->argc; - if (*bsdtar->argv == NULL) - return (-1); - /* Decide between "new style" and "old style" arguments. */ - if (bsdtar->argv[0][0] == '-') { - state = state_next_word; - } else { - state = state_old_tar; - opt_word = *bsdtar->argv++; - --bsdtar->argc; - } - } - - /* - * We're parsing old-style tar arguments - */ - if (state == state_old_tar) { - /* Get the next option character. */ - opt = *opt_word++; - if (opt == '\0') { - /* New-style args can follow old-style. */ - state = state_next_word; - } else { - /* See if it takes an argument. */ - p = strchr(short_options, opt); - if (p == NULL) - return ('?'); - if (p[1] == ':') { - bsdtar->optarg = *bsdtar->argv; - if (bsdtar->optarg == NULL) { - lafe_warnc(0, - "Option %c requires an argument", - opt); - return ('?'); - } - ++bsdtar->argv; - --bsdtar->argc; - } - } - } - - /* - * We're ready to look at the next word in argv. - */ - if (state == state_next_word) { - /* No more arguments, so no more options. */ - if (bsdtar->argv[0] == NULL) - return (-1); - /* Doesn't start with '-', so no more options. */ - if (bsdtar->argv[0][0] != '-') - return (-1); - /* "--" marks end of options; consume it and return. */ - if (strcmp(bsdtar->argv[0], "--") == 0) { - ++bsdtar->argv; - --bsdtar->argc; - return (-1); - } - /* Get next word for parsing. */ - opt_word = *bsdtar->argv++; - --bsdtar->argc; - if (opt_word[1] == '-') { - /* Set up long option parser. */ - state = state_long; - opt_word += 2; /* Skip leading '--' */ - } else { - /* Set up short option parser. */ - state = state_short; - ++opt_word; /* Skip leading '-' */ - } - } - - /* - * We're parsing a group of POSIX-style single-character options. - */ - if (state == state_short) { - /* Peel next option off of a group of short options. */ - opt = *opt_word++; - if (opt == '\0') { - /* End of this group; recurse to get next option. */ - state = state_next_word; - return bsdtar_getopt(bsdtar); - } - - /* Does this option take an argument? */ - p = strchr(short_options, opt); - if (p == NULL) - return ('?'); - if (p[1] == ':') - required = 1; - - /* If it takes an argument, parse that. */ - if (required) { - /* If arg is run-in, opt_word already points to it. */ - if (opt_word[0] == '\0') { - /* Otherwise, pick up the next word. */ - opt_word = *bsdtar->argv; - if (opt_word == NULL) { - lafe_warnc(0, - "Option -%c requires an argument", - opt); - return ('?'); - } - ++bsdtar->argv; - --bsdtar->argc; - } - if (opt == 'W') { - state = state_long; - long_prefix = "-W "; /* For clearer errors. */ - } else { - state = state_next_word; - bsdtar->optarg = opt_word; - } - } - } - - /* We're reading a long option, including -W long=arg convention. */ - if (state == state_long) { - /* After this long option, we'll be starting a new word. */ - state = state_next_word; - - /* Option name ends at '=' if there is one. */ - p = strchr(opt_word, '='); - if (p != NULL) { - optlength = (size_t)(p - opt_word); - bsdtar->optarg = (char *)(uintptr_t)(p + 1); - } else { - optlength = strlen(opt_word); - } - - /* Search the table for an unambiguous match. */ - for (popt = tar_longopts; popt->name != NULL; popt++) { - /* Short-circuit if first chars don't match. */ - if (popt->name[0] != opt_word[0]) - continue; - /* If option is a prefix of name in table, record it.*/ - if (strncmp(opt_word, popt->name, optlength) == 0) { - match2 = match; /* Record up to two matches. */ - match = popt; - /* If it's an exact match, we're done. */ - if (strlen(popt->name) == optlength) { - match2 = NULL; /* Forget the others. */ - break; - } - } - } - - /* Fail if there wasn't a unique match. */ - if (match == NULL) { - lafe_warnc(0, - "Option %s%s is not supported", - long_prefix, opt_word); - return ('?'); - } - if (match2 != NULL) { - lafe_warnc(0, - "Ambiguous option %s%s (matches --%s and --%s)", - long_prefix, opt_word, match->name, match2->name); - return ('?'); - } - - /* We've found a unique match; does it need an argument? */ - if (match->required) { - /* Argument required: get next word if necessary. */ - if (bsdtar->optarg == NULL) { - bsdtar->optarg = *bsdtar->argv; - if (bsdtar->optarg == NULL) { - lafe_warnc(0, - "Option %s%s requires an argument", - long_prefix, match->name); - return ('?'); - } - ++bsdtar->argv; - --bsdtar->argc; - } - } else { - /* Argument forbidden: fail if there is one. */ - if (bsdtar->optarg != NULL) { - lafe_warnc(0, - "Option %s%s does not allow an argument", - long_prefix, match->name); - return ('?'); - } - } - return (match->equivalent); - } - - return (opt); -} |
