#include "mem_config.h"
-#include <cstdio>
-#include <cstring>
-#include <getopt.h>
-#include <iostream>
-#include <unistd.h>
-#include "libmemcached-1.0/memcached.h"
-
-#include "utilities.h"
-
#define PROGRAM_NAME "memcat"
#define PROGRAM_DESCRIPTION "Cat a set of key values to stdout."
+#define PROGRAM_VERSION "1.1"
-/* Prototypes */
-void options_parse(int argc, char *argv[]);
+#include "common/options.hpp"
+#include "common/checks.hpp"
-static int opt_binary = 0;
-static int opt_verbose = 0;
-static int opt_displayflag = 0;
-static char *opt_servers = NULL;
-static char *opt_hash = NULL;
-static char *opt_username;
-static char *opt_passwd;
-static char *opt_file;
+#include <iostream>
+#include <fstream>
-int main(int argc, char *argv[]) {
- char *string;
- size_t string_length;
- uint32_t flags;
+memcached_return_t memcat(const client_options &opt, memcached_st *memc, const char *key, std::ostream *ref) {
memcached_return_t rc;
+ uint32_t flags;
+ size_t len;
+ auto val = memcached_get(memc, key, strlen(key), &len, &flags, &rc);
+ auto verbose = opt.isset("verbose");
- int return_code = EXIT_SUCCESS;
-
- options_parse(argc, argv);
- initialize_sockets();
+ if (MEMCACHED_SUCCESS == rc) {
+ if (verbose) {
+ *ref << "key: " << key << "\n";
+ }
+ if (opt.isset("flags")) {
+ if (verbose) {
+ *ref << "flags: ";
+ }
+ *ref << flags << "\n";
+ }
+ if (verbose) {
+ *ref << "value: ";
+ }
- if (opt_servers == NULL) {
- char *temp;
+ ref->write(val, len);
- if ((temp = getenv("MEMCACHED_SERVERS"))) {
- opt_servers = strdup(temp);
+ if (verbose || !opt.isset("file")) {
+ *ref << std::endl;
}
- if (opt_servers == NULL) {
- std::cerr << "No servers provided" << std::endl;
- exit(EXIT_FAILURE);
- }
+ ref->flush();
}
- memcached_server_st *servers = memcached_servers_parse(opt_servers);
- if (servers == NULL or memcached_server_list_count(servers) == 0) {
- std::cerr << "Invalid server list provided:" << opt_servers << std::endl;
- return EXIT_FAILURE;
+ if (val) {
+ free(val);
}
+ return rc;
+}
- memcached_st *memc = memcached_create(NULL);
- process_hash_option(memc, opt_hash);
-
- memcached_server_push(memc, servers);
- memcached_server_list_free(servers);
- memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, (uint64_t) opt_binary);
+int main(int argc, char *argv[]) {
+ client_options opt{PROGRAM_NAME, PROGRAM_VERSION, PROGRAM_DESCRIPTION, "key [key ...]"};
- if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0) {
- memcached_free(memc);
- std::cerr << "--username was supplied, but binary was not built with SASL support."
- << std::endl;
- return EXIT_FAILURE;
+ for (const auto &def : opt.defaults) {
+ opt.add(def);
}
+ opt.add("flags", 'F', no_argument, "Display key flags, too.");
+ opt.add("file", 'f', optional_argument, "Output to file instead of standard output."
+ "\n\t\t# NOTE: defaults to <key> if no argument was provided.");
- if (opt_username) {
- memcached_return_t ret;
- if (memcached_failed(ret = memcached_set_sasl_auth_data(memc, opt_username, opt_passwd))) {
- std::cerr << memcached_last_error_message(memc) << std::endl;
- memcached_free(memc);
- return EXIT_FAILURE;
- }
+ char **argp = nullptr;
+ if (!opt.parse(argc, argv, &argp)) {
+ exit(EXIT_FAILURE);
}
- while (optind < argc) {
- string = memcached_get(memc, argv[optind], strlen(argv[optind]), &string_length, &flags, &rc);
- if (rc == MEMCACHED_SUCCESS) {
- if (opt_displayflag) {
- if (opt_verbose) {
- std::cout << "key: " << argv[optind] << std::endl << "flags: ";
- }
- std::cout << flags << std::endl;
- } else {
- if (opt_verbose) {
- std::cout << "key: " << argv[optind] << std::endl
- << "flags: " << flags << std::endl
- << "length: " << string_length << std::endl
- << "value: ";
- }
-
- if (opt_file) {
- FILE *fp = fopen(opt_file, "w");
- if (fp == NULL) {
- perror("fopen");
- return_code = EXIT_FAILURE;
- break;
- }
-
- size_t written = fwrite(string, 1, string_length, fp);
- if (written != string_length) {
- std::cerr << "error writing file to file " << opt_file << " wrote " << written
- << ", should have written" << string_length << std::endl;
- return_code = EXIT_FAILURE;
- break;
- }
-
- if (fclose(fp)) {
- std::cerr << "error closing " << opt_file << std::endl;
- return_code = EXIT_FAILURE;
- break;
- }
- } else {
- std::cout.write(string, string_length);
- std::cout << std::endl;
- }
- }
- } else if (rc != MEMCACHED_NOTFOUND) {
- std::cerr << "error on " << argv[optind] << "(" << memcached_strerror(memc, rc) << ")";
- if (memcached_last_error_errno(memc)) {
- std::cerr << " system error (" << strerror(memcached_last_error_errno(memc)) << ")"
- << std::endl;
- }
- std::cerr << std::endl;
-
- return_code = EXIT_FAILURE;
- break;
- } else // Unknown Issue
- {
- std::cerr << "error on " << argv[optind] << "(" << memcached_strerror(NULL, rc) << ")"
- << std::endl;
- return_code = EXIT_FAILURE;
- }
- optind++;
- free(string);
- string = nullptr;
- }
- if (string) {
- free(string);
+ if (opt.isset("quiet") && !opt.isset("file")) {
+ std::cerr << "--quiet operation was requested, but --file was not set.\n";
+ exit(EXIT_FAILURE);
}
- memcached_free(memc);
+ memcached_st memc;
+ if (!check_memcached(opt, memc)) {
+ exit(EXIT_FAILURE);
+ }
- if (opt_servers) {
- free(opt_servers);
+ if (!opt.apply(&memc)) {
+ memcached_free(&memc);
+ exit(EXIT_FAILURE);
}
- if (opt_hash) {
- free(opt_hash);
+
+ if (!check_argp(opt, argp, "No key(s) provided.")) {
+ memcached_free(&memc);
+ exit(EXIT_FAILURE);
}
- return return_code;
-}
+ auto exit_code = EXIT_SUCCESS;
+ for (auto arg = argp; *arg; ++arg) {
+ auto key = *arg;
+ if (*key) {
+ char *file = opt.isset("file") ? (opt.argof("file") ?: key) : nullptr;
+ std::ofstream fstream{};
+ std::ostream *ostream = check_ostream(opt, file, fstream);
-void options_parse(int argc, char *argv[]) {
- int option_index = 0;
-
- memcached_programs_help_st help_options[] = {
- {0},
- };
-
- static struct option long_options[] = {
- {(OPTIONSTRING) "version", no_argument, NULL, OPT_VERSION},
- {(OPTIONSTRING) "help", no_argument, NULL, OPT_HELP},
- {(OPTIONSTRING) "quiet", no_argument, NULL, OPT_QUIET},
- {(OPTIONSTRING) "verbose", no_argument, &opt_verbose, OPT_VERBOSE},
- {(OPTIONSTRING) "debug", no_argument, &opt_verbose, OPT_DEBUG},
- {(OPTIONSTRING) "servers", required_argument, NULL, OPT_SERVERS},
- {(OPTIONSTRING) "flag", no_argument, &opt_displayflag, OPT_FLAG},
- {(OPTIONSTRING) "hash", required_argument, NULL, OPT_HASH},
- {(OPTIONSTRING) "binary", no_argument, NULL, OPT_BINARY},
- {(OPTIONSTRING) "username", required_argument, NULL, OPT_USERNAME},
- {(OPTIONSTRING) "password", required_argument, NULL, OPT_PASSWD},
- {(OPTIONSTRING) "file", required_argument, NULL, OPT_FILE},
- {0, 0, 0, 0},
- };
-
- while (1) {
- int option_rv = getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
- if (option_rv == -1)
- break;
- switch (option_rv) {
- case 0:
- break;
- case OPT_BINARY:
- opt_binary = 1;
- break;
- case OPT_VERBOSE: /* --verbose or -v */
- opt_verbose = OPT_VERBOSE;
- break;
- case OPT_DEBUG: /* --debug or -d */
- opt_verbose = OPT_DEBUG;
- break;
- case OPT_VERSION: /* --version or -V */
- version_command(PROGRAM_NAME);
- break;
- case OPT_HELP: /* --help or -h */
- help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
- break;
- case OPT_SERVERS: /* --servers or -s */
- opt_servers = strdup(optarg);
- break;
- case OPT_HASH:
- opt_hash = strdup(optarg);
- break;
- case OPT_USERNAME:
- opt_username = optarg;
- break;
- case OPT_PASSWD:
- opt_passwd = optarg;
- break;
- case OPT_FILE:
- opt_file = optarg;
- break;
-
- case OPT_QUIET:
- close_stdio();
- break;
-
- case '?':
- /* getopt_long already printed an error message. */
- exit(EXIT_FAILURE);
- default:
- abort();
+ if (!check_return(opt, memc, key, memcat(opt, &memc, key, ostream))) {
+ exit_code = EXIT_FAILURE;
+ }
}
}
+
+ memcached_free(&memc);
+ exit(exit_code);
}
projects / awesomized / libmemcached / blobdiff