Replace current verbose GPL stuff in libbb/*.c with one-line GPL boilerplate.

[oweals/busybox.git] / archival / gzip.c

diff --git a/archival/gzip.c b/archival/gzip.c
index 41ed3a2c7c0fabbb6731a66966d969c51c88aaae..486f78f887db1e6ae2cb8eaf1f7614ec6d237b93 100644 (file)
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -16,11 +16,7 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-/* These defines are very important for BusyBox.  Without these,
- * huge chunks of ram are pre-allocated making the BusyBox bss
- * size Freaking Huge(tm), which is a bad thing.*/
 #define SMALL_MEM
-#define DYN_ALLOC
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -87,17 +83,11 @@ typedef unsigned long ulg;
 #  endif
 #endif
 
-#ifdef DYN_ALLOC
 #  define DECLARE(type, array, size)  static type * array
 #  define ALLOC(type, array, size) { \
-      array = (type*)xcalloc((size_t)(((size)+1L)/2), 2*sizeof(type)); \
+      array = (type*)xzalloc((size_t)(((size)+1L)/2) * 2*sizeof(type)); \
    }
 #  define FREE(array) {free(array), array=NULL;}
-#else
-#  define DECLARE(type, array, size)  static type array[size]
-#  define ALLOC(type, array, size)
-#  define FREE(array)
-#endif
 
 #define tab_suffix window
 #define tab_prefix prev        /* hash link (see deflate.c) */
@@ -154,15 +144,6 @@ typedef int file_t;                /* Do not use stdio */
 #define put_byte(c) {outbuf[outcnt++]=(uch)(c); if (outcnt==OUTBUFSIZ)\
    flush_outbuf();}
 
-
-/* Output a 32 bit value to the bit stream, lsb first */
-#if 0
-#define put_long(n) { \
-    put_short((n) & 0xffff); \
-    put_short(((ulg)(n)) >> 16); \
-}
-#endif
-
 #define seekable()    0        /* force sequential output */
 #define translate_eol 0        /* no option -a yet */
 
@@ -334,7 +315,7 @@ static void write_buf(int fd, void *buf, unsigned cnt)
        unsigned n;
 
        while ((n = write(fd, buf, cnt)) != cnt) {
-               if (n == (unsigned) (-1)) bb_error_msg_and_die("can't write");
+               if (n == (unsigned) (-1)) bb_error_msg_and_die(bb_msg_write_error);
                cnt -= n;
                buf = (void *) ((char *) buf + n);
        }
@@ -494,7 +475,7 @@ static void send_bits(int value, int length)
  */
 static unsigned bi_reverse(unsigned code, int len)
 {
-       register unsigned res = 0;
+       unsigned res = 0;
 
        do {
                res |= code & 1;
@@ -792,7 +773,7 @@ static void check_match(IPos start, IPos match, int length);
  */
 static void lm_init(ush * flags)
 {
-       register unsigned j;
+       unsigned j;
 
        /* Initialize the hash table. */
        memset(head, 0, HASH_SIZE * sizeof(*head));
@@ -842,9 +823,9 @@ static void lm_init(ush * flags)
 static int longest_match(IPos cur_match)
 {
        unsigned chain_length = max_chain_length;       /* max hash chain length */
-       register uch *scan = window + strstart; /* current string */
-       register uch *match;    /* matched string */
-       register int len;       /* length of current match */
+       uch *scan = window + strstart;  /* current string */
+       uch *match;     /* matched string */
+       int len;        /* length of current match */
        int best_len = prev_length;     /* best match length so far */
        IPos limit =
                strstart > (IPos) MAX_DIST ? strstart - (IPos) MAX_DIST : NIL;
@@ -858,9 +839,9 @@ static int longest_match(IPos cur_match)
 #if HASH_BITS < 8 || MAX_MATCH != 258
 #  error Code too clever
 #endif
-       register uch *strend = window + strstart + MAX_MATCH;
-       register uch scan_end1 = scan[best_len - 1];
-       register uch scan_end = scan[best_len];
+       uch *strend = window + strstart + MAX_MATCH;
+       uch scan_end1 = scan[best_len - 1];
+       uch scan_end = scan[best_len];
 
        /* Do not waste too much time if we already have a good match: */
        if (prev_length >= good_match) {
@@ -947,7 +928,7 @@ static void check_match(IPos start, IPos match, int length)
  */
 static void fill_window(void)
 {
-       register unsigned n, m;
+       unsigned n, m;
        unsigned more =
                (unsigned) (window_size - (ulg) lookahead - (ulg) strstart);
        /* Amount of free space at the end of the window. */
@@ -1015,7 +996,7 @@ static ulg deflate(void)
        IPos prev_match;        /* previous match */
        int flush;                      /* set if current block must be flushed */
        int match_available = 0;        /* set if previous match exists */
-       register unsigned match_length = MIN_MATCH - 1; /* length of best match */
+       unsigned match_length = MIN_MATCH - 1;  /* length of best match */
 
        /* Process the input block. */
        while (lookahead != 0) {
@@ -1228,8 +1209,8 @@ int gzip_main(int argc, char **argv)
                                inFileNum = STDIN_FILENO;
                                outFileNum = STDOUT_FILENO;
                        } else {
-                               inFileNum = open(argv[i], O_RDONLY);
-                               if (inFileNum < 0 || fstat(inFileNum, &statBuf) < 0)
+                               inFileNum = bb_xopen3(argv[i], O_RDONLY, 0);
+                               if (fstat(inFileNum, &statBuf) < 0)
                                        bb_perror_msg_and_die("%s", argv[i]);
                                time_stamp = statBuf.st_ctime;
                                ifile_size = statBuf.st_size;