diff options
Diffstat (limited to 'contrib/libarchive/cat/bsdcat.c')
| -rw-r--r-- | contrib/libarchive/cat/bsdcat.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/contrib/libarchive/cat/bsdcat.c b/contrib/libarchive/cat/bsdcat.c new file mode 100644 index 000000000000..bdb9c40b9150 --- /dev/null +++ b/contrib/libarchive/cat/bsdcat.c @@ -0,0 +1,156 @@ +/*- + * Copyright (c) 2011-2014, Mike Kazantsev + * 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. + */ + +#include "bsdcat_platform.h" +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_STRING_H +#include <string.h> +#endif + +#include "bsdcat.h" +#include "err.h" + +#define BYTES_PER_BLOCK (20*512) + +static struct archive *a; +static struct archive_entry *ae; +static const char *bsdcat_current_path; +static int exit_status = 0; + + +void +usage(FILE *stream, int eval) +{ + const char *p; + p = lafe_getprogname(); + fprintf(stream, + "Usage: %s [-h] [--help] [--version] [--] [filenames...]\n", p); + exit(eval); +} + +static void +version(void) +{ + printf("bsdcat %s - %s \n", + BSDCAT_VERSION_STRING, + archive_version_details()); + exit(0); +} + +void +bsdcat_next(void) +{ + if (a != NULL) { + if (archive_read_close(a) != ARCHIVE_OK) + bsdcat_print_error(); + archive_read_free(a); + } + + a = archive_read_new(); + archive_read_support_filter_all(a); + archive_read_support_format_empty(a); + archive_read_support_format_raw(a); +} + +void +bsdcat_print_error(void) +{ + lafe_warnc(0, "%s: %s", + bsdcat_current_path, archive_error_string(a)); + exit_status = 1; +} + +void +bsdcat_read_to_stdout(const char* filename) +{ + int r; + + if (archive_read_open_filename(a, filename, BYTES_PER_BLOCK) + != ARCHIVE_OK) + bsdcat_print_error(); + else if (r = archive_read_next_header(a, &ae), + r != ARCHIVE_OK && r != ARCHIVE_EOF) + bsdcat_print_error(); + else if (r == ARCHIVE_EOF) + /* for empty payloads don't try and read data */ + ; + else if (archive_read_data_into_fd(a, 1) != ARCHIVE_OK) + bsdcat_print_error(); + if (archive_read_close(a) != ARCHIVE_OK) + bsdcat_print_error(); + archive_read_free(a); + a = NULL; +} + +int +main(int argc, char **argv) +{ + struct bsdcat *bsdcat, bsdcat_storage; + int c; + + bsdcat = &bsdcat_storage; + memset(bsdcat, 0, sizeof(*bsdcat)); + + lafe_setprogname(*argv, "bsdcat"); + + bsdcat->argv = argv; + bsdcat->argc = argc; + + while ((c = bsdcat_getopt(bsdcat)) != -1) { + switch (c) { + case 'h': + usage(stdout, 0); + break; + case OPTION_VERSION: + version(); + break; + default: + usage(stderr, 1); + } + } + + bsdcat_next(); + if (*bsdcat->argv == NULL) { + bsdcat_current_path = "<stdin>"; + bsdcat_read_to_stdout(NULL); + } else { + while (*bsdcat->argv) { + bsdcat_current_path = *bsdcat->argv++; + bsdcat_read_to_stdout(bsdcat_current_path); + bsdcat_next(); + } + archive_read_free(a); /* Help valgrind & friends */ + } + + exit(exit_status); +} |