54 static int block_len = 0;
55 static int strong_len = 0;
57 static int show_stats = 0;
59 static int bzip2_level = 0;
60 static int gzip_level = 0;
61 static int file_force = 0;
64 OPT_GZIP = 1069, OPT_BZIP2
68 char *rs_rollsum_name;
70 static void rdiff_usage(
const char *error, ...)
76 vsnprintf(buf,
sizeof(buf), error, va);
78 fprintf(stderr,
"rdiff: %s\n\nTry `rdiff --help' for more information.\n",
82 static void rdiff_no_more_args(poptContext opcon)
84 if (poptGetArg(opcon)) {
85 rdiff_usage(
"Too many arguments.");
90 static void bad_option(poptContext opcon,
int error)
92 rdiff_usage(
"%s: %s", poptStrerror(error), poptBadOption(opcon, 0));
96 static void help(
void)
98 printf(
"Usage: rdiff [OPTIONS] signature [BASIS [SIGNATURE]]\n"
99 " [OPTIONS] delta SIGNATURE [NEWFILE [DELTA]]\n"
100 " [OPTIONS] patch BASIS [DELTA [NEWFILE]]\n" "\n"
102 " -v, --verbose Trace internal processing\n"
103 " -V, --version Show program version\n"
104 " -?, --help Show this help message\n"
105 " -s, --statistics Show performance statistics\n"
106 " -f, --force Force overwriting existing files\n"
107 "Signature generation options:\n"
108 " -H, --hash=ALG Hash algorithm: blake2 (default), md4\n"
109 " -R, --rollsum=ALG Rollsum algorithm: rabinkarp (default), rollsum\n"
110 "Delta-encoding options:\n"
111 " -b, --block-size=BYTES Signature block size, 0 (default) for recommended\n"
112 " -S, --sum-size=BYTES Signature strength, 0 (default) for max, -1 for min\n"
113 "IO options:\n" " -I, --input-size=BYTES Input buffer size\n"
114 " -O, --output-size=BYTES Output buffer size\n"
115 " -z, --gzip[=LEVEL] gzip-compress deltas\n"
116 " -i, --bzip2[=LEVEL] bzip2-compress deltas\n");
119 static void rdiff_show_version(
void)
121 char const *bzlib =
"", *zlib =
"", *trace =
"";
135 trace =
", trace disabled";
138 printf(
"rdiff (%s)\n"
139 "Copyright (C) 1997-2016 by Martin Pool, Andrew Tridgell and others.\n"
140 "http://librsync.sourcefrog.net/\n"
141 "Capabilities: %ld bit files%s%s%s\n" "\n"
142 "librsync comes with NO WARRANTY, to the extent permitted by law.\n"
143 "You may redistribute copies of librsync under the terms of the GNU\n"
144 "Lesser General Public License. For more information about these\n"
146 (
long)(8 *
sizeof(rs_long_t)), zlib, bzlib, trace);
149 static void rdiff_options(poptContext opcon)
154 while ((c = poptGetNextOpt(opcon)) != -1) {
160 rdiff_show_version();
164 fprintf(stderr,
"rdiff: Library does not support trace.\n");
171 if ((a = poptGetOptArg(opcon))) {
183 rdiff_usage(
"Sorry, compression is not implemented yet.");
187 bad_option(opcon, c);
195 FILE *basis_file, *sig_file;
200 basis_file =
rs_file_open(poptGetArg(opcon),
"rb", file_force);
201 sig_file =
rs_file_open(poptGetArg(opcon),
"wb", file_force);
203 rdiff_no_more_args(opcon);
205 if (!rs_hash_name || !strcmp(rs_hash_name,
"blake2")) {
207 }
else if (!strcmp(rs_hash_name,
"md4")) {
210 rdiff_usage(
"Unknown hash algorithm '%s'.", rs_hash_name);
213 if (!rs_rollsum_name || !strcmp(rs_rollsum_name,
"rabinkarp")) {
216 }
else if (strcmp(rs_rollsum_name,
"rollsum")) {
217 rdiff_usage(
"Unknown rollsum algorithm '%s'.", rs_rollsum_name);
222 rs_sig_file(basis_file, sig_file, block_len, strong_len, sig_magic,
236 static rs_result rdiff_delta(poptContext opcon)
238 FILE *sig_file, *new_file, *delta_file;
239 char const *sig_name;
244 if (!(sig_name = poptGetArg(opcon))) {
245 rdiff_usage(
"Usage for delta: "
246 "rdiff [OPTIONS] delta SIGNATURE [NEWFILE [DELTA]]");
251 new_file =
rs_file_open(poptGetArg(opcon),
"rb", file_force);
252 delta_file =
rs_file_open(poptGetArg(opcon),
"wb", file_force);
254 rdiff_no_more_args(opcon);
266 result =
rs_delta_file(sumset, new_file, delta_file, &stats);
282 static rs_result rdiff_patch(poptContext opcon)
285 FILE *basis_file, *delta_file, *new_file;
286 char const *basis_name;
290 if (!(basis_name = poptGetArg(opcon))) {
291 rdiff_usage(
"Usage for patch: "
292 "rdiff [OPTIONS] patch BASIS [DELTA [NEW]]");
296 basis_file =
rs_file_open(basis_name,
"rb", file_force);
297 delta_file =
rs_file_open(poptGetArg(opcon),
"rb", file_force);
298 new_file =
rs_file_open(poptGetArg(opcon),
"wb", file_force);
300 rdiff_no_more_args(opcon);
302 result =
rs_patch_file(basis_file, delta_file, new_file, &stats);
314 static rs_result rdiff_action(poptContext opcon)
318 action = poptGetArg(opcon);
320 else if (isprefix(action,
"signature"))
322 else if (isprefix(action,
"delta"))
323 return rdiff_delta(opcon);
324 else if (isprefix(action,
"patch"))
325 return rdiff_patch(opcon);
328 (
"You must specify an action: `signature', `delta', or `patch'.");
332 int main(
const int argc,
const char *argv[])
335 const struct poptOption opts[] = {
336 {
"verbose",
'v', POPT_ARG_NONE, 0,
'v'},
337 {
"version",
'V', POPT_ARG_NONE, 0,
'V'},
339 {
"output-size",
'O', POPT_ARG_INT, &rs_outbuflen},
340 {
"hash",
'H', POPT_ARG_STRING, &rs_hash_name},
341 {
"rollsum",
'R', POPT_ARG_STRING, &rs_rollsum_name},
342 {
"help",
'?', POPT_ARG_NONE, 0,
'h'},
343 {0,
'h', POPT_ARG_NONE, 0,
'h'},
344 {
"block-size",
'b', POPT_ARG_INT, &block_len},
345 {
"sum-size",
'S', POPT_ARG_INT, &strong_len},
346 {
"statistics",
's', POPT_ARG_NONE, &show_stats},
347 {
"stats", 0, POPT_ARG_NONE, &show_stats},
348 {
"gzip",
'z', POPT_ARG_NONE, 0, OPT_GZIP},
349 {
"bzip2",
'i', POPT_ARG_NONE, 0, OPT_BZIP2},
350 {
"force",
'f', POPT_ARG_NONE, &file_force},
357 opcon = poptGetContext(
"rdiff", argc, argv, opts, 0);
358 rdiff_options(opcon);
359 result = rdiff_action(opcon);
362 fprintf(stderr,
"rdiff: Failed, %s.\n",
rs_strerror(result));
364 poptFreeContext(opcon);