diff options
Diffstat (limited to 'cat/bsdcat.c')
-rw-r--r-- | cat/bsdcat.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/cat/bsdcat.c b/cat/bsdcat.c new file mode 100644 index 00000000..e9b34487 --- /dev/null +++ b/cat/bsdcat.c @@ -0,0 +1,116 @@ +/*- + * 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 <stdio.h> +#include <stdlib.h> +#include <getopt.h> + +#include "bsdcat.h" +#include "err.h" + +#define BYTES_PER_BLOCK (20*512) + +struct archive *a; +struct archive_entry *ae; +char *bsdcat_current_path; +int c, err; + + +static struct option long_options[] = { + {"help", 0, 0, 'h'}, + {"version", 0, 0, 'v'}, + {NULL, 0, NULL, 0} +}; + +void +usage(void) +{ + const char *p; + p = lafe_getprogname(); + fprintf(stderr, "Usage: %s [-h] [--help] [--version] [--] [filenames...]\n", p); + exit(1); +} + +static void +version(void) +{ + printf("bsdcat %s - %s\n", + BSDCAT_VERSION_STRING, + archive_version_details()); + exit(0); +} + +void +bsdcat_next() +{ + a = archive_read_new(); + archive_read_support_filter_all(a); + archive_read_support_format_raw(a); +} + +void +bsdcat_read_to_stdout(char* filename) +{ + if ((archive_read_open_filename(a, filename, BYTES_PER_BLOCK) != ARCHIVE_OK) + || (archive_read_next_header(a, &ae) != ARCHIVE_OK) + || (archive_read_data_into_fd(a, 1) != ARCHIVE_OK) + || (archive_read_free(a) != ARCHIVE_OK)) + goto fail; + return; +fail: + lafe_errc(1, 0, "Error: %s - %s", + bsdcat_current_path, archive_error_string(a)); +} + +int +main(int argc, char **argv) +{ + lafe_setprogname(*argv, "bsdcat"); + + int option_index = 0; + while ((c = getopt_long(argc, argv, "h", + long_options, &option_index)) != -1) { + switch (c) { + case 'v': + version(); + break; + default: + usage(); + } + } + + bsdcat_next(); + if (optind >= argc) { + bsdcat_current_path = "<stdin>"; + bsdcat_read_to_stdout(NULL); + } else + while (optind < argc) { + bsdcat_current_path = argv[optind++]; + bsdcat_read_to_stdout(bsdcat_current_path); + bsdcat_next(); + } + + exit(0); +} |