Reorganise, make it just one function, remove -v option it didnt work properly anyway, dont setvbuf it doesnt make any difference in performance.
This commit is contained in:
Glenn L McGrath
parent
1ee52e8b14
commit
abac53b33c
@ -66,114 +66,22 @@ static char *license_msg[] = {
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#include <getopt.h>
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#include "busybox.h"
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const int gunzip_to_stdout = 1;
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const int gunzip_force = 2;
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const int gunzip_test = 4;
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const int gunzip_verbose = 8;
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static int gunzip_file(const char *path, int flags)
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{
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FILE *in_file, *out_file;
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struct stat stat_buf;
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const char *delete_path = NULL;
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char *out_path = NULL;
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if (path == NULL || strcmp(path, "-") == 0) {
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in_file = stdin;
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flags |= gunzip_to_stdout;
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} else {
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if ((in_file = wfopen(path, "r")) == NULL) {
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return -1;
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}
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if (flags & gunzip_verbose) {
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fprintf(stderr, "%s:\t", path);
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}
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/* set the buffer size */
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setvbuf(in_file, NULL, _IOFBF, 0x8000);
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/* Get the time stamp on the input file. */
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if (stat(path, &stat_buf) < 0) {
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error_msg_and_die("Couldn't stat file %s", path);
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}
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}
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/* Check that the input is sane. */
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if (isatty(fileno(in_file)) && (flags & gunzip_force) == 0) {
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error_msg_and_die
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("compressed data not read from terminal. Use -f to force it.");
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}
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/* Set output filename and number */
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if (flags & gunzip_test) {
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out_file = xfopen("/dev/null", "w"); /* why does test use filenum 2 ? */
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} else if (flags & gunzip_to_stdout) {
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out_file = stdout;
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} else {
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char *extension;
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int length = strlen(path);
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extension = strrchr(path, '.');
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if (extension && strcmp(extension, ".gz") == 0) {
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length -= 3;
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} else if (extension && strcmp(extension, ".tgz") == 0) {
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length -= 4;
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} else {
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error_msg_and_die("Invalid extension");
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}
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out_path = xstrndup(path, length);
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/* Open output file */
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out_file = xfopen(out_path, "w");
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/* Set permissions on the file */
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chmod(out_path, stat_buf.st_mode);
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}
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/* do the decompression, and cleanup */
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if (unzip(in_file, out_file) == 0) {
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/* Success, remove .gz file */
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if (!(flags & gunzip_to_stdout)) {
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delete_path = path;
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}
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if (flags & gunzip_verbose) {
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fprintf(stderr, "OK\n");
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}
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} else {
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/* remove failed attempt */
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delete_path = out_path;
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}
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if (out_file != stdout) {
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fclose(out_file);
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}
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if (in_file != stdin) {
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fclose(in_file);
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}
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if (delete_path && !(flags & gunzip_test)) {
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if (unlink(delete_path) < 0) {
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error_msg_and_die("Couldn't remove %s", delete_path);
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}
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}
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free(out_path);
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return 0;
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}
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const char gunzip_to_stdout = 1;
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const char gunzip_force = 2;
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const char gunzip_test = 4;
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extern int gunzip_main(int argc, char **argv)
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{
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int flags = 0;
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int i, opt;
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int status = EXIT_SUCCESS;
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char status = EXIT_SUCCESS;
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char flags = 0;
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int opt;
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/* if called as zcat */
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if (strcmp(applet_name, "zcat") == 0) {
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flags |= gunzip_to_stdout;
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}
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while ((opt = getopt(argc, argv, "ctfhdqv")) != -1) {
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while ((opt = getopt(argc, argv, "ctfhd")) != -1) {
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switch (opt) {
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case 'c':
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flags |= gunzip_to_stdout;
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@ -184,30 +92,95 @@ extern int gunzip_main(int argc, char **argv)
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case 't':
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flags |= gunzip_test;
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break;
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case 'v':
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flags |= gunzip_verbose;
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break;
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case 'd': /* Used to convert gzip to gunzip. */
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break;
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case 'q':
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error_msg("-q option not supported, ignored");
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break;
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case 'h':
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default:
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show_usage(); /* exit's inside usage */
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}
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}
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if (optind == argc) {
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if (gunzip_file(NULL, flags) < 0) {
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status = EXIT_FAILURE;
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}
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} else {
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for (i = optind; i < argc; i++) {
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if (gunzip_file(argv[i], flags) < 0) {
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do {
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FILE *in_file, *out_file;
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struct stat stat_buf;
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const char *old_path = argv[optind];
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const char *delete_path = NULL;
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char *new_path = NULL;
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optind++;
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if (old_path == NULL || strcmp(old_path, "-") == 0) {
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in_file = stdin;
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flags |= gunzip_to_stdout;
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} else {
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in_file = wfopen(old_path, "r");
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if (in_file == NULL) {
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status = EXIT_FAILURE;
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break;
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}
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/* Get the time stamp on the input file. */
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if (stat(old_path, &stat_buf) < 0) {
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error_msg_and_die("Couldn't stat file %s", old_path);
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}
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}
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}
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/* Check that the input is sane. */
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if (isatty(fileno(in_file)) && ((flags & gunzip_force) == 0)) {
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error_msg_and_die
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("compressed data not read from terminal. Use -f to force it.");
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}
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/* Set output filename and number */
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if (flags & gunzip_test) {
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out_file = xfopen("/dev/null", "w"); /* why does test use filenum 2 ? */
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} else if (flags & gunzip_to_stdout) {
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out_file = stdout;
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} else {
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char *extension;
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new_path = xstrdup(old_path);
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extension = strrchr(new_path, '.');
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if (extension && (strcmp(extension, ".gz") == 0)) {
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*extension = '\0';
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} else if (extension && (strcmp(extension, ".tgz") == 0)) {
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extension[2] = 'a';
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extension[3] = 'r';
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} else {
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error_msg_and_die("Invalid extension");
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}
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/* Open output file */
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out_file = xfopen(new_path, "w");
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/* Set permissions on the file */
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chmod(old_path, stat_buf.st_mode);
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/* If unzip succeeds remove the old file */
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delete_path = old_path;
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}
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/* do the decompression, and cleanup */
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if ((unzip(in_file, out_file) != 0) && (new_path)) {
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/* Unzip failed, remove new path instead of old path */
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delete_path = new_path;
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}
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if (out_file != stdout) {
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fclose(out_file);
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}
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if (in_file != stdin) {
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fclose(in_file);
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}
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/* delete_path will be NULL if in test mode or from stdin */
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if (delete_path && (unlink(delete_path) == -1)) {
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error_msg_and_die("Couldn't remove %s", delete_path);
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}
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free(new_path);
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} while (optind < argc);
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return status;
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}
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