diff options
Diffstat (limited to 'gzip.c')
| -rw-r--r-- | gzip.c | 48 |
1 files changed, 20 insertions, 28 deletions
@@ -1900,42 +1900,36 @@ int gzip_main(int argc, char **argv) int tostdout = 0; int fromstdin = 0; int force = 0; + int opt; - /* Parse any options */ - while (--argc > 0 && **(++argv) == '-') { - if (*((*argv) + 1) == '\0') { + while ((opt = getopt(argc, argv, "cf123456789d")) != -1) { + switch (opt) { + case 'c': tostdout = 1; - } - while (*(++(*argv))) { - switch (**argv) { - case 'c': - tostdout = 1; - break; - case 'f': - force = 1; - break; - /* Ignore 1-9 (compression level) options */ - case '1': case '2': case '3': case '4': case '5': - case '6': case '7': case '8': case '9': - break; + break; + case 'f': + force = 1; + break; + /* Ignore 1-9 (compression level) options */ + case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '8': case '9': + break; #ifdef BB_GUNZIP - case 'd': - exit(gunzip_main(argc, argv)); + case 'd': + optind = 1; + return gunzip_main(argc, argv); #endif - default: - show_usage(); - } + default: + show_usage(); } } - if (argc <= 0 ) { + if (optind == argc) { fromstdin = 1; tostdout = 1; } - if (isatty(fileno(stdin)) && fromstdin==1 && force==0) - error_msg_and_die( "data not read from terminal. Use -f to force it."); if (isatty(fileno(stdout)) && tostdout==1 && force==0) - error_msg_and_die( "data not written to terminal. Use -f to force it."); + error_msg_and_die( "compressed data not written to terminal. Use -f to force it."); foreground = signal(SIGINT, SIG_IGN) != SIG_IGN; if (foreground) { @@ -1975,9 +1969,7 @@ int gzip_main(int argc, char **argv) ifile_size = -1L; /* convention for unknown size */ } else { /* Open up the input file */ - if (argc <= 0) - show_usage(); - strncpy(ifname, *argv, MAX_PATH_LEN); + strncpy(ifname, argv[optind], MAX_PATH_LEN); /* Open input file */ inFileNum = open(ifname, O_RDONLY); |