diff options
| -rw-r--r-- | archival/gunzip.c | 157 |
1 files changed, 88 insertions, 69 deletions
diff --git a/archival/gunzip.c b/archival/gunzip.c index dde6701..e40982c 100644 --- a/archival/gunzip.c +++ b/archival/gunzip.c @@ -68,27 +68,22 @@ static char *license_msg[] = { extern int gunzip_main(int argc, char **argv) { - FILE *in_file = stdin; - FILE *out_file = NULL; + int flags = 0; + int opt = 0; + int delete_old_file, file_count; struct stat stat_buf; - - char *if_name = NULL; - char *of_name = NULL; - char *delete_file_name = NULL; - + FILE *in_file, *out_file; + char *if_name, *of_name, *delete_file_name; const int gunzip_to_stdout = 1; const int gunzip_force = 2; const int gunzip_test = 4; - - int flags = 0; - int opt = 0; - int delete_old_file = FALSE; + const int gunzip_verbose = 8; /* if called as zcat */ if (strcmp(applet_name, "zcat") == 0) flags |= gunzip_to_stdout; - while ((opt = getopt(argc, argv, "ctfhdq")) != -1) { + while ((opt = getopt(argc, argv, "ctfhdqv")) != -1) { switch (opt) { case 'c': flags |= gunzip_to_stdout; @@ -99,6 +94,9 @@ extern int gunzip_main(int argc, char **argv) case 't': flags |= gunzip_test; break; + case 'v': + flags |= gunzip_verbose; + break; case 'd': /* Used to convert gzip to gunzip. */ break; case 'q': @@ -110,74 +108,95 @@ extern int gunzip_main(int argc, char **argv) } } - /* Set input filename and number */ - if (argv[optind] == NULL || strcmp(argv[optind], "-") == 0) { - flags |= gunzip_to_stdout; - } else { - if_name = xstrdup(argv[optind]); - /* Open input file */ - in_file = xfopen(if_name, "r"); + file_count = argc - optind; + while (file_count==0 || optind < argc) { + in_file = stdin; + out_file = NULL; + if_name = NULL; + of_name = NULL; + delete_file_name = NULL; + delete_old_file = FALSE; + + /* Set input filename and number */ + if (argv[optind] == NULL || strcmp(argv[optind], "-") == 0) { + flags |= gunzip_to_stdout; + /* Skip to the end */ + optind = argc; + } else { + if_name = strdup(argv[optind]); + /* Open input file */ + in_file = xfopen(if_name, "r"); - /* set the buffer size */ - setvbuf(in_file, NULL, _IOFBF, 0x8000); + if (flags & gunzip_verbose) { + fprintf(stderr, "%s:\t", if_name); + } - /* Get the time stamp on the input file. */ - if (stat(if_name, &stat_buf) < 0) { - error_msg_and_die("Couldn't stat file %s", if_name); - } - } + /* set the buffer size */ + setvbuf(in_file, NULL, _IOFBF, 0x8000); - /* Check that the input is sane. */ - if (isatty(fileno(in_file)) && (flags & gunzip_force) == 0) - error_msg_and_die("compressed data not read from terminal. Use -f to force it."); - - /* Set output filename and number */ - if (flags & gunzip_test) { - out_file = xfopen("/dev/null", "w"); /* why does test use filenum 2 ? */ - } else if (flags & gunzip_to_stdout) { - out_file = stdout; - } else { - char *extension; - int length = strlen(if_name); - - delete_old_file = TRUE; - extension = strrchr(if_name, '.'); - if (extension && strcmp(extension, ".gz") == 0) { - length -= 3; - } else if (extension && strcmp(extension, ".tgz") == 0) { - length -= 4; - } else { - error_msg_and_die("Invalid extension"); + /* Get the time stamp on the input file. */ + if (stat(if_name, &stat_buf) < 0) { + error_msg_and_die("Couldn't stat file %s", if_name); + } } - of_name = (char *) xcalloc(sizeof(char), length + 1); - strncpy(of_name, if_name, length); - /* Open output file */ - out_file = xfopen(of_name, "w"); + /* Check that the input is sane. */ + if (isatty(fileno(in_file)) && (flags & gunzip_force) == 0) + error_msg_and_die("compressed data not read from terminal. Use -f to force it."); - /* Set permissions on the file */ - chmod(of_name, stat_buf.st_mode); - } + /* Set output filename and number */ + if (flags & gunzip_test) { + out_file = xfopen("/dev/null", "w"); /* why does test use filenum 2 ? */ + } else if (flags & gunzip_to_stdout) { + out_file = stdout; + } else { + char *extension; + int length = strlen(if_name); + + delete_old_file = TRUE; + extension = strrchr(if_name, '.'); + if (extension && strcmp(extension, ".gz") == 0) { + length -= 3; + } else if (extension && strcmp(extension, ".tgz") == 0) { + length -= 4; + } else { + error_msg_and_die("Invalid extension"); + } + of_name = (char *) xcalloc(sizeof(char), length + 1); + strncpy(of_name, if_name, length); + + /* Open output file */ + out_file = xfopen(of_name, "w"); + + /* Set permissions on the file */ + chmod(of_name, stat_buf.st_mode); + } - /* do the decompression, and cleanup */ - if (unzip(in_file, out_file) == 0) { - /* Success, remove .gz file */ - delete_file_name = if_name; - } else { - /* remove failed attempt */ - delete_file_name = of_name; - } + /* do the decompression, and cleanup */ + if (unzip(in_file, out_file) == 0) { + /* Success, remove .gz file */ + delete_file_name = if_name; + if (flags & gunzip_verbose) { + fprintf(stderr, "OK\n"); + } + } else { + /* remove failed attempt */ + delete_file_name = of_name; + } - fclose(out_file); - fclose(in_file); + fclose(out_file); + fclose(in_file); - if (delete_old_file) { - if (unlink(delete_file_name) < 0) { - error_msg_and_die("Couldnt remove %s", delete_file_name); + if (delete_old_file == TRUE && !(flags & gunzip_test)) { + if (unlink(delete_file_name) < 0) { + error_msg_and_die("Couldnt remove %s", delete_file_name); + } } - } - free(of_name); + free(of_name); + optind++; + } /* while () */ return(EXIT_SUCCESS); } + |