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main.c
author Kristian H?gsberg <krh@redhat.com>
Mon Apr 07 12:09:50 2008 -0400 (2008-04-07)
changeset 203 e0047e89db07
parent 202 e8594c82dffc
child 204 60badcb3d8ea
permissions -rw-r--r--
Handle arch correctly in command_download() and print some status at the end. 
     1 #include <stdlib.h>

     2 #include <stddef.h>

     3 #include <stdio.h>

     4 #include <stdint.h>

     5 #include <string.h>

     6 #include <sys/stat.h>

     7 #include <unistd.h>

     8 #include <fcntl.h>

     9 #include <dirent.h>

    10 #include <curl/curl.h>

    11 #include <fnmatch.h>

    12 #include "razor.h"

    13 #include "razor-internal.h"

    14 

    15 static const char system_repo_filename[] = "system.repo";

    16 static const char next_repo_filename[] = "system-next.repo";

    17 static const char rawhide_repo_filename[] = "rawhide.repo";

    18 static const char updated_repo_filename[] = "system-updated.repo";

    19 static const char razor_root_path[] = "/var/lib/razor";

    20 static const char root[] = "install";

    21 static const char *repo_filename = system_repo_filename;

    22 

    23 static int

    24 command_list(int argc, const char *argv[])

    25 {

    26 	struct razor_set *set;

    27 	struct razor_package_iterator *pi;

    28 	struct razor_package *package;

    29 	const char *pattern, *name, *version, *arch;

    30 	int only_names = 0, i = 0;

    31 

    32 	if (i < argc && strcmp(argv[i], "--only-names") == 0) {

    33 		only_names = 1;

    34 		i++;

    35 	}

    36 

    37 	pattern = argv[i];

    38 	set = razor_set_open(repo_filename);

    39 	pi = razor_package_iterator_create(set);

    40 	while (razor_package_iterator_next(pi, &package,

    41 					   &name, &version, &arch)) {

    42 		if (pattern && fnmatch(pattern, name, 0) != 0)

    43 			continue;

    44 

    45 		if (only_names)

    46 			printf("%s\n", name);

    47 		else

    48 			printf("%s-%s.%s\n", name, version, arch);

    49 	}

    50 	razor_package_iterator_destroy(pi);

    51 	razor_set_destroy(set);

    52 

    53 	return 0;

    54 }

    55 

    56 static int

    57 list_properties(const char *package_name,

    58 		enum razor_property_type required_type)

    59 {

    60 	struct razor_set *set;

    61 	struct razor_property *property;

    62 	struct razor_package *package;

    63 	struct razor_property_iterator *pi;

    64 	const char *name, *version;

    65 	enum razor_property_type type;

    66 	enum razor_version_relation relation;

    67 

    68 	set = razor_set_open(repo_filename);

    69 	if (package_name)

    70 		package = razor_set_get_package(set, package_name);

    71 	else

    72 		package = NULL;

    73 

    74 	pi = razor_property_iterator_create(set, package);

    75 	while (razor_property_iterator_next(pi, &property,

    76 					    &name, &relation, &version,

    77 					    &type)) {

    78 		if (type != required_type)

    79 			continue;

    80 		if (version[0] == '\0')

    81 			printf("%s\n", name);

    82 		else

    83 			printf("%s %s %s\n", name,

    84 			       razor_version_relations[relation], version);

    85 	}

    86 	razor_property_iterator_destroy(pi);

    87 

    88 	razor_set_destroy(set);

    89 

    90 	return 0;

    91 }

    92 

    93 static int

    94 command_list_requires(int argc, const char *argv[])

    95 {

    96 	return list_properties(argv[0], RAZOR_PROPERTY_REQUIRES);

    97 }

    98 

    99 static int

   100 command_list_provides(int argc, const char *argv[])

   101 {

   102 	return list_properties(argv[0], RAZOR_PROPERTY_PROVIDES);

   103 }

   104 

   105 static int

   106 command_list_obsoletes(int argc, const char *argv[])

   107 {

   108 	return list_properties(argv[0], RAZOR_PROPERTY_OBSOLETES);

   109 }

   110 

   111 static int

   112 command_list_conflicts(int argc, const char *argv[])

   113 {

   114 	return list_properties(argv[0], RAZOR_PROPERTY_CONFLICTS);

   115 }

   116 

   117 static int

   118 command_list_files(int argc, const char *argv[])

   119 {

   120 	struct razor_set *set;

   121 

   122 	set = razor_set_open(repo_filename);

   123 	if (set == NULL)

   124 		return 1;

   125 	razor_set_list_files(set, argv[0]);

   126 	razor_set_destroy(set);

   127 

   128 	return 0;

   129 }

   130 

   131 static int

   132 command_list_file_packages(int argc, const char *argv[])

   133 {

   134 	struct razor_set *set;

   135 	struct razor_package_iterator *pi;

   136 	struct razor_package *package;

   137 	const char *name, *version, *arch;

   138 

   139 	set = razor_set_open(repo_filename);

   140 	if (set == NULL)

   141 		return 1;

   142 

   143 	pi = razor_package_iterator_create_for_file(set, argv[0]);

   144 	while (razor_package_iterator_next(pi, &package,

   145 					   &name, &version, &arch))

   146 		printf("%s-%s\n", name, version);

   147 	razor_package_iterator_destroy(pi);

   148 

   149 	razor_set_destroy(set);

   150 

   151 	return 0;

   152 }

   153 

   154 static int

   155 command_list_package_files(int argc, const char *argv[])

   156 {

   157 	struct razor_set *set;

   158 

   159 	set = razor_set_open(repo_filename);

   160 	if (set == NULL)

   161 		return 1;

   162 	razor_set_list_package_files(set, argv[0]);

   163 	razor_set_destroy(set);

   164 

   165 	return 0;

   166 }

   167 

   168 static void

   169 list_packages_for_property(struct razor_set *set,

   170 			   struct razor_property *property)

   171 {

   172 	struct razor_package_iterator *pi;

   173 	struct razor_package *package;

   174 	const char *name, *version, *arch;

   175 

   176 	pi = razor_package_iterator_create_for_property(set, property);

   177 	while (razor_package_iterator_next(pi, &package,

   178 					   &name, &version, &arch))

   179 		printf("%s-%s.%s\n", name, version, arch);

   180 	razor_package_iterator_destroy(pi);

   181 }

   182 

   183 static int

   184 list_property_packages(const char *ref_name,

   185 		       const char *ref_version,

   186 		       enum razor_property_type ref_type)

   187 {

   188 	struct razor_set *set;

   189 	struct razor_property *property;

   190 	struct razor_property_iterator *pi;

   191 	const char *name, *version;

   192 	enum razor_property_type type;

   193 	enum razor_version_relation relation;

   194 

   195 	if (ref_name == NULL)

   196 		return 0;

   197 

   198 	set = razor_set_open(repo_filename);

   199 	if (set == NULL)

   200 		return 1;

   201 

   202 	pi = razor_property_iterator_create(set, NULL);

   203 	while (razor_property_iterator_next(pi, &property,

   204 					    &name, &relation, &version,

   205 					    &type)) {

   206 		if (strcmp(ref_name, name) != 0)

   207 			continue;

   208 		if (ref_version && relation == RAZOR_VERSION_EQUAL &&

   209 		    strcmp(ref_version, version) != 0)

   210 			continue;

   211 		if (ref_type != type)

   212 			continue;

   213 

   214 		list_packages_for_property(set, property);

   215 	}

   216 	razor_property_iterator_destroy(pi);

   217 

   218 	return 0;

   219 }

   220 

   221 static int

   222 command_what_requires(int argc, const char *argv[])

   223 {

   224 	return list_property_packages(argv[0], argv[1],

   225 				      RAZOR_PROPERTY_REQUIRES);

   226 }

   227 

   228 static int

   229 command_what_provides(int argc, const char *argv[])

   230 {

   231 	return list_property_packages(argv[0], argv[1],

   232 				      RAZOR_PROPERTY_PROVIDES);

   233 }

   234 

   235 static int

   236 show_progress(void *clientp,

   237 	      double dltotal, double dlnow, double ultotal, double ulnow)

   238 {

   239 	const char *file = clientp;

   240 

   241 	if (!dlnow < dltotal)

   242 		fprintf(stderr, "\rdownloading %s, %dkB/%dkB",

   243 			file, (int) dlnow / 1024, (int) dltotal / 1024);

   244 

   245 	return 0;

   246 }

   247 

   248 static int

   249 download_if_missing(const char *url, const char *file)

   250 {

   251 	CURL *curl;

   252 	struct stat buf;

   253 	char error[256];

   254 	FILE *fp;

   255 	CURLcode res;

   256 

   257 	curl = curl_easy_init();

   258 	if (curl == NULL)

   259 		return 1;

   260 

   261 	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error);

   262 	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);

   263 	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, show_progress);

   264 	curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, file);

   265 

   266 	if (stat(file, &buf) < 0) {

   267 		fp = fopen(file, "w");

   268 		curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);

   269 		curl_easy_setopt(curl, CURLOPT_URL, url);

   270 		res = curl_easy_perform(curl);

   271 		fclose(fp);

   272 		if (res != CURLE_OK) {

   273 			fprintf(stderr, "curl error: %s\n", error);

   274 			unlink(file);

   275 			return -1;

   276 		}

   277 		fprintf(stderr, "\n");

   278 	}

   279 

   280 	curl_easy_cleanup(curl);

   281 

   282 	return 0;

   283 }

   284 

   285 #define REPO_URL "http://download.fedora.redhat.com" \

   286 	"/pub/fedora/linux/development/i386/os"

   287 

   288 static int

   289 command_import_yum(int argc, const char *argv[])

   290 {

   291 	struct razor_set *set;

   292 

   293 	if (download_if_missing(REPO_URL "/repodata/primary.xml.gz",

   294 				"primary.xml.gz") < 0)

   295 		return -1;

   296 	if (download_if_missing(REPO_URL "/repodata/filelists.xml.gz",

   297 				"filelists.xml.gz") < 0)

   298 		return -1;

   299 

   300 	set = razor_set_create_from_yum();

   301 	if (set == NULL)

   302 		return 1;

   303 	razor_set_write(set, rawhide_repo_filename);

   304 	razor_set_destroy(set);

   305 	printf("wrote %s\n", rawhide_repo_filename);

   306 

   307 	return 0;

   308 }

   309 

   310 static int

   311 command_import_rpmdb(int argc, const char *argv[])

   312 {

   313 	struct razor_set *set;

   314 

   315 	set = razor_set_create_from_rpmdb();

   316 	if (set == NULL)

   317 		return 1;

   318 	razor_set_write(set, repo_filename);

   319 	razor_set_destroy(set);

   320 	printf("wrote %s\n", repo_filename);

   321 

   322 	return 0;

   323 }

   324 

   325 static int

   326 command_validate(int argc, const char *argv[])

   327 {

   328 	struct razor_set *set;

   329 

   330 	set = razor_set_open(repo_filename);

   331 	if (set == NULL)

   332 		return 1;

   333 	razor_set_list_unsatisfied(set);

   334 	razor_set_destroy(set);

   335 

   336 	return 0;

   337 }

   338 

   339 static int

   340 command_update(int argc, const char *argv[])

   341 {

   342 	struct razor_set *set, *upstream;

   343 	struct razor_transaction *trans;

   344 	int errors;

   345 

   346 	set = razor_set_open(repo_filename);

   347 	upstream = razor_set_open(rawhide_repo_filename);

   348 	if (set == NULL || upstream == NULL)

   349 		return 1;

   350 	trans = razor_transaction_create(set, upstream, argc, argv, 0, NULL);

   351 	errors = razor_transaction_describe(trans);

   352 	if (errors)

   353 		return 1;

   354 

   355 	set = razor_transaction_finish(trans);

   356 	razor_set_write(set, updated_repo_filename);

   357 	razor_set_destroy(set);

   358 	razor_set_destroy(upstream);

   359 	printf("wrote system-updated.repo\n");

   360 

   361 	return 0;

   362 }

   363 

   364 static int

   365 command_remove(int argc, const char *argv[])

   366 {

   367 	struct razor_set *set;

   368 	struct razor_transaction *trans;

   369 	int errors;

   370 

   371 	set = razor_set_open(repo_filename);

   372 	if (set == NULL)

   373 		return 1;

   374 	trans = razor_transaction_create(set, NULL, 0, NULL, argc, argv);

   375 	errors = razor_transaction_describe(trans);

   376 	if (errors)

   377 		return 1;

   378 

   379 	set = razor_transaction_finish(trans);

   380 	razor_set_write(set, updated_repo_filename);

   381 	razor_set_destroy(set);

   382 	printf("wrote system-updated.repo\n");

   383 

   384 	return 0;

   385 }

   386 

   387 static void

   388 print_diff(const char *name,

   389 	   const char *old_version, const char *new_version, const char *arch,

   390 	   void *data)

   391 {

   392 	if (old_version)

   393 		printf("removing %s %s\n", name, old_version);

   394 	else

   395 		printf("install %s %s\n", name, new_version);

   396 }

   397 

   398 static int

   399 command_diff(int argc, const char *argv[])

   400 {

   401 	struct razor_set *set, *updated;

   402 

   403 	set = razor_set_open(repo_filename);

   404 	updated = razor_set_open(updated_repo_filename);

   405 	if (set == NULL || updated == NULL)

   406 		return 1;

   407 

   408 	razor_set_diff(set, updated, print_diff, NULL);	

   409 

   410 	razor_set_destroy(set);

   411 	razor_set_destroy(updated);

   412 

   413 	return 0;

   414 }

   415 

   416 static int

   417 command_import_rpms(int argc, const char *argv[])

   418 {

   419 	DIR *dir;

   420 	struct dirent *de;

   421 	struct razor_importer *importer;

   422 	struct razor_set *set;

   423 	struct razor_rpm *rpm;

   424 	int len;

   425 	char filename[256];

   426 	const char *dirname = argv[0];

   427 

   428 	if (dirname == NULL) {

   429 		fprintf(stderr, "usage: razor import-rpms DIR\n");

   430 		return -1;

   431 	}

   432 

   433 	dir = opendir(dirname);

   434 	if (dir == NULL) {

   435 		fprintf(stderr, "couldn't read dir %s\n", dirname);

   436 		return -1;

   437 	}

   438 

   439 	importer = razor_importer_new();

   440 

   441 	while (de = readdir(dir), de != NULL) {

   442 		len = strlen(de->d_name);

   443 		if (len < 5 || strcmp(de->d_name + len - 4, ".rpm") != 0)

   444 		    continue;

   445 		snprintf(filename, sizeof filename,

   446 			 "%s/%s", dirname, de->d_name);

   447 		rpm = razor_rpm_open(filename);

   448 		if (rpm == NULL) {

   449 			fprintf(stderr,

   450 				"failed to open rpm \"%s\"\n", filename);

   451 			continue;

   452 		}

   453 		if (razor_importer_add_rpm(importer, rpm)) {

   454 			fprintf(stderr, "couldn't import %s\n", filename);

   455 			break;

   456 		}

   457 		razor_rpm_close(rpm);

   458 	}

   459 

   460 	if (de != NULL) {

   461 		razor_importer_destroy(importer);

   462 		return -1;

   463 	}

   464 

   465 	set = razor_importer_finish(importer);

   466 

   467 	razor_set_write(set, repo_filename);

   468 	razor_set_destroy(set);

   469 	printf("wrote %s\n", repo_filename);

   470 

   471 	return 0;

   472 }

   473 

   474 static void

   475 download_package(const char *name,

   476 		 const char *old_version,

   477 		 const char *new_version,

   478 		 const char *arch,

   479 		 void *data)

   480 {

   481 	char file[PATH_MAX], url[256];

   482 	const char *v;

   483 

   484 	if (old_version)

   485 		return;

   486 

   487 	/* Skip epoch */

   488 	v = strchr(new_version, ':');

   489 	if (v != NULL)

   490 		v = v + 1;

   491 	else

   492 		v = new_version;

   493 

   494 	snprintf(url, sizeof url,

   495 		 REPO_URL "/Packages/%s-%s.%s.rpm", name, v, arch);

   496 	snprintf(file, sizeof file,

   497 		 "rpms/%s-%s.%s.rpm", name, v, arch);

   498 	if (download_if_missing(url, file) < 0)

   499 		fprintf(stderr, "failed to download %s\n", name);

   500 }

   501 

   502 static void

   503 install_package(const char *name,

   504 		const char *old_version,

   505 		const char *new_version,

   506 		const char *arch,

   507 		void *data)

   508 {

   509 	const char *v, *root = data;

   510 	char file[PATH_MAX];

   511 	struct razor_rpm *rpm;

   512 

   513 	if (old_version) {

   514 		printf("removing %s %s not handled\n", name, old_version);

   515 		return;

   516 	}

   517 

   518 	/* Skip epoch */

   519 	v = strchr(new_version, ':');

   520 	if (v != NULL)

   521 		v = v + 1;

   522 	else

   523 		v = new_version;

   524 

   525 	printf("install %s %s\n", name, v);

   526 	snprintf(file, sizeof file, "rpms/%s-%s.%s.rpm", name, v, arch);

   527 

   528  	rpm = razor_rpm_open(file);

   529 	if (rpm == NULL) {

   530 		fprintf(stderr, "failed to open rpm %s\n", file);

   531 		return;

   532 	}

   533 	if (razor_rpm_install(rpm, root) < 0) {

   534 		fprintf(stderr,

   535 			"failed to install rpm %s\n", file);

   536 		return;

   537 	}

   538 	razor_rpm_close(rpm);

   539 }

   540 

   541 static int

   542 command_install(int argc, const char *argv[])

   543 {

   544 	struct razor_set *system, *upstream, *next;

   545 	struct razor_transaction *trans;

   546 	char path[PATH_MAX], new_path[PATH_MAX];

   547 	int errors, fd;

   548 

   549 	/* Create the new next repo file up front to ensure exclusive

   550 	 * access. */

   551 	snprintf(new_path, sizeof new_path,

   552 		 "%s%s/%s", root, razor_root_path, next_repo_filename);

   553 	fd = open(new_path, O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666);

   554 	if (fd < 0) {

   555 		fprintf(stderr, "failed to get lock file, "

   556 			"maybe previous operation crashed?\n");

   557 

   558 		/* FIXME: Use fcntl advisory locking to figure out

   559 		 * whether previous operation crashed or is still in

   560 		 * progress. */

   561 

   562 		return -1;

   563 	}

   564 

   565 	upstream = razor_set_open(rawhide_repo_filename);

   566 	snprintf(path, sizeof path,

   567 		 "%s%s/%s", root, razor_root_path, system_repo_filename);

   568 	system = razor_set_open(path);

   569 	if (system == NULL || upstream == NULL) {

   570 		unlink(new_path);

   571 		return 1;

   572 	}

   573 	trans = razor_transaction_create(system, upstream,

   574 					 argc, argv, 0, NULL);

   575 	errors = razor_transaction_describe(trans);

   576 	if (errors) {

   577 		unlink(new_path);

   578 		return 1;

   579 	}

   580 

   581 	next = razor_transaction_finish(trans);

   582 

   583 	razor_set_write_to_fd(next, fd);

   584 	printf("wrote %s\n", new_path);

   585 

   586 	razor_set_diff(system, next, download_package, NULL);	

   587 

   588 	/* FIXME: We need to figure out the right install order here,

   589 	 * so the post and pre scripts can run. */

   590 	razor_set_diff(system, next, install_package, (void *) root);

   591 

   592 	razor_set_destroy(next);

   593 	razor_set_destroy(system);

   594 	razor_set_destroy(upstream);

   595 

   596 	/* Make it so. */

   597 	rename(new_path, path);

   598 	printf("renamed %s to %s\n", new_path, path);

   599 

   600 	return 0;

   601 }

   602 

   603 static int

   604 command_init(int argc, const char *argv[])

   605 {

   606 	struct stat buf;

   607 	struct razor_set *set;

   608 	char path[PATH_MAX];

   609 

   610 	if (stat(root, &buf) < 0) {

   611 		if (mkdir(root, 0777) < 0) {

   612 			fprintf(stderr,

   613 				"could not create install root \"%s\"\n",

   614 				root);

   615 			return -1;

   616 		}

   617 		fprintf(stderr, "created install root \"%s\"\n", root);

   618 	} else if (!S_ISDIR(buf.st_mode)) {

   619 		fprintf(stderr,

   620 			"install root \"%s\" exists, but is not a directory\n",

   621 			root);

   622 		return -1;

   623 	}

   624 

   625 	if (razor_create_dir(root, razor_root_path) < 0) {

   626 		fprintf(stderr, "could not create %s%s\n",

   627 			root, razor_root_path);

   628 		return -1;

   629 	}

   630 

   631 	set = razor_set_create();

   632 	snprintf(path, sizeof path, "%s%s/%s",

   633 		 root, razor_root_path, system_repo_filename);

   634 	if (razor_set_write(set, path) < 0) {

   635 		fprintf(stderr, "could not write initial package set\n");

   636 		return -1;

   637 	}

   638 	razor_set_destroy(set);

   639 

   640 	return 0;

   641 }

   642 

   643 static int

   644 command_download(int argc, const char *argv[])

   645 {

   646 	struct razor_set *set;

   647 	struct razor_package_iterator *pi;

   648 	struct razor_package *package;

   649 	const char *pattern = argv[0], *name, *version, *arch;

   650 	char url[256], file[256];

   651 	int matches = 0;

   652 

   653 	set = razor_set_open(rawhide_repo_filename);

   654 	pi = razor_package_iterator_create(set);

   655 	while (razor_package_iterator_next(pi, &package,

   656 					   &name, &version, &arch)) {

   657 		if (pattern && fnmatch(pattern, name, 0) != 0)

   658 			continue;

   659 

   660 		matches++;

   661 		snprintf(url, sizeof url,

   662 			 REPO_URL "/Packages/%s-%s.%s.rpm",

   663 			 name, version, arch);

   664 		snprintf(file, sizeof file,

   665 			 "rpms/%s-%s.%s.rpm", name, version, arch);

   666 		if (download_if_missing(url, file) < 0)

   667 			fprintf(stderr, "failed to download %s\n", name);

   668 	}

   669 	razor_package_iterator_destroy(pi);

   670 	razor_set_destroy(set);

   671 

   672 	if (matches == 0)

   673 		fprintf(stderr, "no packages matched \"%s\"\n", pattern);

   674 	else if (matches == 1)

   675 		fprintf(stderr, "downloaded 1 package\n");

   676 	else

   677 		fprintf(stderr, "downloaded %d package\n", matches);

   678 

   679 	return 0;

   680 }

   681 

   682 static struct {

   683 	const char *name;

   684 	const char *description;

   685 	int (*func)(int argc, const char *argv[]);

   686 } razor_commands[] = {

   687 	{ "list", "list all packages", command_list },

   688 	{ "list-requires", "list all requires for the given package", command_list_requires },

   689 	{ "list-provides", "list all provides for the given package", command_list_provides },

   690 	{ "list-obsoletes", "list all obsoletes for the given package", command_list_obsoletes },

   691 	{ "list-conflicts", "list all conflicts for the given package", command_list_conflicts },

   692 	{ "list-files", "list files for package set", command_list_files },

   693 	{ "list-file-packages", "list packages owning file", command_list_file_packages },

   694 	{ "list-package-files", "list files in package", command_list_package_files },

   695 	{ "what-requires", "list the packages that have the given requires", command_what_requires },

   696 	{ "what-provides", "list the packages that have the given provides", command_what_provides },

   697 	{ "import-yum", "import yum metadata files", command_import_yum },

   698 	{ "import-rpmdb", "import the system rpm database", command_import_rpmdb },

   699 	{ "import-rpms", "import rpms from the given directory", command_import_rpms },

   700 	{ "validate", "validate a package set", command_validate },

   701 	{ "update", "update all or specified packages", command_update },

   702 	{ "remove", "remove specified packages", command_remove },

   703 	{ "diff", "show diff between two package sets", command_diff },

   704 	{ "install", "install rpm", command_install },

   705 	{ "init", "init razor root", command_init },

   706 	{ "download", "download packages", command_download }

   707 };

   708 

   709 static int

   710 usage(void)

   711 {

   712 	int i;

   713 

   714 	printf("usage:\n");

   715 	for (i = 0; i < ARRAY_SIZE(razor_commands); i++)

   716 		printf("  %-20s%s\n",

   717 		       razor_commands[i].name, razor_commands[i].description);

   718 

   719 	return 1;

   720 }

   721 

   722 int

   723 main(int argc, const char *argv[])

   724 {

   725 	char *repo;

   726 	int i;

   727 

   728 	repo = getenv("RAZOR_REPO");

   729 	if (repo != NULL)

   730 		repo_filename = repo;

   731 

   732 	if (argc < 2)

   733 		return usage();

   734 

   735 	for (i = 0; i < ARRAY_SIZE(razor_commands); i++)

   736 		if (strcmp(razor_commands[i].name, argv[1]) == 0)

   737 			return razor_commands[i].func(argc - 2, argv + 2);

   738 

   739 	return usage();

   740 }
razor