1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /*
18 * Zip alignment tool
19 */
20
21 #include "ZipAlign.h"
22
23 #include <stdio.h>
24 #include <stdlib.h>
25
26 using namespace android;
27
28 /*
29 * Show program usage.
30 */
usage(void)31 void usage(void)
32 {
33 fprintf(stderr, "Zip alignment utility\n");
34 fprintf(stderr, "Copyright (C) 2009 The Android Open Source Project\n\n");
35 fprintf(stderr,
36 "Usage: zipalign [-f] [-p] [-v] [-z] <align> infile.zip outfile.zip\n"
37 " zipalign -c [-p] [-v] <align> infile.zip\n\n" );
38 fprintf(stderr,
39 " <align>: alignment in bytes, e.g. '4' provides 32-bit alignment\n");
40 fprintf(stderr, " -c: check alignment only (does not modify file)\n");
41 fprintf(stderr, " -f: overwrite existing outfile.zip\n");
42 fprintf(stderr, " -p: page-align uncompressed .so files\n");
43 fprintf(stderr, " -v: verbose output\n");
44 fprintf(stderr, " -z: recompress using Zopfli\n");
45 }
46
47
48 /*
49 * Parse args.
50 */
main(int argc,char * const argv[])51 int main(int argc, char* const argv[])
52 {
53 bool wantUsage = false;
54 bool check = false;
55 bool force = false;
56 bool verbose = false;
57 bool zopfli = false;
58 bool pageAlignSharedLibs = false;
59 int result = 1;
60 int alignment;
61 char* endp;
62
63 if (argc < 4) {
64 wantUsage = true;
65 goto bail;
66 }
67
68 argc--;
69 argv++;
70
71 while (argc && argv[0][0] == '-') {
72 const char* cp = argv[0] +1;
73
74 while (*cp != '\0') {
75 switch (*cp) {
76 case 'c':
77 check = true;
78 break;
79 case 'f':
80 force = true;
81 break;
82 case 'v':
83 verbose = true;
84 break;
85 case 'z':
86 zopfli = true;
87 break;
88 case 'p':
89 pageAlignSharedLibs = true;
90 break;
91 default:
92 fprintf(stderr, "ERROR: unknown flag -%c\n", *cp);
93 wantUsage = true;
94 goto bail;
95 }
96
97 cp++;
98 }
99
100 argc--;
101 argv++;
102 }
103
104 if (!((check && argc == 2) || (!check && argc == 3))) {
105 wantUsage = true;
106 goto bail;
107 }
108
109 alignment = strtol(argv[0], &endp, 10);
110 if (*endp != '\0' || alignment <= 0) {
111 fprintf(stderr, "Invalid value for alignment: %s\n", argv[0]);
112 wantUsage = true;
113 goto bail;
114 }
115
116 if (check) {
117 /* check existing archive for correct alignment */
118 result = verify(argv[1], alignment, verbose, pageAlignSharedLibs);
119 } else {
120 /* create the new archive */
121 result = process(argv[1], argv[2], alignment, force, zopfli, pageAlignSharedLibs);
122
123 /* trust, but verify */
124 if (result == 0) {
125 result = verify(argv[2], alignment, verbose, pageAlignSharedLibs);
126 }
127 }
128
129 bail:
130 if (wantUsage) {
131 usage();
132 result = 2;
133 }
134
135 return result;
136 }
137