summaryrefslogtreecommitdiff
path: root/archival/libunarchive
diff options
context:
space:
mode:
authorRob Landley2006-06-25 22:39:24 +0000
committerRob Landley2006-06-25 22:39:24 +0000
commit11c7a7bed60a55a670363bec3c07e8d88aa372b7 (patch)
tree809c167b4c007b334afcb34b4689841a029022ac /archival/libunarchive
parentf087798e8bf5857b679c369601426ca29334caee (diff)
downloadbusybox-11c7a7bed60a55a670363bec3c07e8d88aa372b7.zip
busybox-11c7a7bed60a55a670363bec3c07e8d88aa372b7.tar.gz
Various cleanups I made while going through Erik Hovland's patch submissions,
some of which are even from him. :)
Diffstat (limited to 'archival/libunarchive')
-rw-r--r--archival/libunarchive/decompress_unzip.c87
1 files changed, 24 insertions, 63 deletions
diff --git a/archival/libunarchive/decompress_unzip.c b/archival/libunarchive/decompress_unzip.c
index a589bdc..e39901c 100644
--- a/archival/libunarchive/decompress_unzip.c
+++ b/archival/libunarchive/decompress_unzip.c
@@ -21,21 +21,6 @@
* to free leaked bytebuffer memory (used in unzip.c), and some minor style
* guide cleanups by Ed Clark
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
* gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface
* Copyright (C) 1992-1993 Jean-loup Gailly
* The unzip code was written and put in the public domain by Mark Adler.
@@ -43,38 +28,14 @@
* written by Spencer Thomas, Joe Orost, James Woods, Jim McKie, Steve Davies,
* Ken Turkowski, Dave Mack and Peter Jannesen.
*
- * See the license_msg below and the file COPYING for the software license.
* See the file algorithm.doc for the compression algorithms and file formats.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#if 0
-static char *license_msg[] = {
- " Copyright (C) 1992-1993 Jean-loup Gailly",
- " This program is free software; you can redistribute it and/or modify",
- " it under the terms of the GNU General Public License as published by",
- " the Free Software Foundation; either version 2, or (at your option)",
- " any later version.",
- "",
- " This program is distributed in the hope that it will be useful,",
- " but WITHOUT ANY WARRANTY; without even the implied warranty of",
- " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the",
- " GNU General Public License for more details.",
- "",
- " You should have received a copy of the GNU General Public License",
- " along with this program; if not, write to the Free Software",
- " Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.",
- 0
-};
-#endif
-
-#include <sys/types.h>
+#include "libbb.h"
#include <sys/wait.h>
#include <signal.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include "libbb.h"
#include "unarchive.h"
typedef struct huft_s {
@@ -213,17 +174,17 @@ int huft_build(unsigned int *b, const unsigned int n,
unsigned eob_len; /* length of end-of-block code (value 256) */
unsigned f; /* i repeats in table every f entries */
int g; /* maximum code length */
- int h; /* table level */
- register unsigned i; /* counter, current code */
- register unsigned j; /* counter */
- register int k; /* number of bits in current code */
- register unsigned *p; /* pointer into c[], b[], or v[] */
- register huft_t *q; /* points to current table */
+ int htl; /* table level */
+ unsigned i; /* counter, current code */
+ unsigned j; /* counter */
+ int k; /* number of bits in current code */
+ unsigned *p; /* pointer into c[], b[], or v[] */
+ huft_t *q; /* points to current table */
huft_t r; /* table entry for structure assignment */
huft_t *u[BMAX]; /* table stack */
unsigned v[N_MAX]; /* values in order of bit length */
int ws[BMAX+1]; /* bits decoded stack */
- register int w; /* bits decoded */
+ int w; /* bits decoded */
unsigned x[BMAX + 1]; /* bit offsets, then code stack */
unsigned *xp; /* pointer into x */
int y; /* number of dummy codes added */
@@ -284,7 +245,7 @@ int huft_build(unsigned int *b, const unsigned int n,
/* Generate the Huffman codes and for each, make the table entries */
x[0] = i = 0; /* first Huffman code is zero */
p = v; /* grab values in bit order */
- h = -1; /* no tables yet--level -1 */
+ htl = -1; /* no tables yet--level -1 */
w = ws[0] = 0; /* bits decoded */
u[0] = (huft_t *) NULL; /* just to keep compilers happy */
q = (huft_t *) NULL; /* ditto */
@@ -296,8 +257,8 @@ int huft_build(unsigned int *b, const unsigned int n,
while (a--) {
/* here i is the Huffman code of length k bits for value *p */
/* make tables up to required level */
- while (k > ws[h + 1]) {
- w = ws[++h];
+ while (k > ws[htl + 1]) {
+ w = ws[++htl];
/* compute minimum size table less than or equal to *m bits */
z = (z = g - w) > *m ? *m : z; /* upper limit on table size */
@@ -314,22 +275,22 @@ int huft_build(unsigned int *b, const unsigned int n,
}
j = (w + j > eob_len && w < eob_len) ? eob_len - w : j; /* make EOB code end at table */
z = 1 << j; /* table entries for j-bit table */
- ws[h+1] = w + j; /* set bits decoded in stack */
+ ws[htl+1] = w + j; /* set bits decoded in stack */
/* allocate and link in new table */
- q = (huft_t *) xmalloc((z + 1) * sizeof(huft_t));
+ q = (huft_t *) xzalloc((z + 1) * sizeof(huft_t));
*t = q + 1; /* link to list for huft_free() */
- *(t = &(q->v.t)) = NULL;
- u[h] = ++q; /* table starts after link */
+ t = &(q->v.t);
+ u[htl] = ++q; /* table starts after link */
/* connect to last table, if there is one */
- if (h) {
- x[h] = i; /* save pattern for backing up */
- r.b = (unsigned char) (w - ws[h - 1]); /* bits to dump before this table */
+ if (htl) {
+ x[htl] = i; /* save pattern for backing up */
+ r.b = (unsigned char) (w - ws[htl - 1]); /* bits to dump before this table */
r.e = (unsigned char) (16 + j); /* bits in this table */
r.v.t = q; /* pointer to this table */
- j = (i & ((1 << w) - 1)) >> ws[h - 1];
- u[h - 1][j] = r; /* connect to last table */
+ j = (i & ((1 << w) - 1)) >> ws[htl - 1];
+ u[htl - 1][j] = r; /* connect to last table */
}
}
@@ -358,8 +319,8 @@ int huft_build(unsigned int *b, const unsigned int n,
i ^= j;
/* backup over finished tables */
- while ((i & ((1 << w) - 1)) != x[h]) {
- w = ws[--h];
+ while ((i & ((1 << w) - 1)) != x[htl]) {
+ w = ws[--htl];
}
}
}