X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=src%2Fbin%2Fmemcat.cc;h=3938bf134406b65384ca31d9157932dc55b6f74a;hb=a124aaabc96a1e58b03f90ac17a75e1df1918cd5;hp=86535123789679c1c068654e1beb33e6546e45c8;hpb=5e760300d15ef4c5b7eed3fb9f37920ebca2f6ec;p=awesomized%2Flibmemcached diff --git a/src/bin/memcat.cc b/src/bin/memcat.cc index 86535123..3938bf13 100644 --- a/src/bin/memcat.cc +++ b/src/bin/memcat.cc @@ -1,265 +1,120 @@ -/* LibMemcached - * Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/ - * Copyright (C) 2006-2009 Brian Aker - * All rights reserved. - * - * Use and distribution licensed under the BSD license. See - * the COPYING file in the parent directory for full text. - * - * Summary: - * - */ - -#include - -#include -#include -#include -#include -#include -#include - -#include "utilities.h" - -#define PROGRAM_NAME "memcat" +/* + +--------------------------------------------------------------------+ + | libmemcached-awesome - C/C++ Client Library for memcached | + +--------------------------------------------------------------------+ + | Redistribution and use in source and binary forms, with or without | + | modification, are permitted under the terms of the BSD license. | + | You should have received a copy of the license in a bundled file | + | named LICENSE; in case you did not receive a copy you can review | + | the terms online at: https://opensource.org/licenses/BSD-3-Clause | + +--------------------------------------------------------------------+ + | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ | + | Copyright (c) 2020-2021 Michael Wallner https://awesome.co/ | + +--------------------------------------------------------------------+ +*/ + +#include "mem_config.h" + +#define PROGRAM_NAME "memcat" #define PROGRAM_DESCRIPTION "Cat a set of key values to stdout." +#define PROGRAM_VERSION "1.1" +#include "common/options.hpp" +#include "common/checks.hpp" -/* Prototypes */ -void options_parse(int argc, char *argv[]); - -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 +#include -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 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: " << 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; - } - free(string); - } - } - 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++; + 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); - - if (opt_servers) - { - free(opt_servers); - } - if (opt_hash) - { - free(opt_hash); + memcached_st memc; + if (!check_memcached(opt, memc)) { + exit(EXIT_FAILURE); } - return return_code; -} - - -void options_parse(int argc, char *argv[]) -{ - int option_index= 0; - - memcached_programs_help_st help_options[]= - { - {0}, - }; + if (!opt.apply(&memc)) { + memcached_free(&memc); + exit(EXIT_FAILURE); + } - 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}, - }; + if (!check_argp(opt, argp, "No key(s) provided.")) { + memcached_free(&memc); + exit(EXIT_FAILURE); + } - 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; + auto file_flag = opt.isset("file"); + auto file = opt.argof("file"); + auto exit_code = EXIT_SUCCESS; + for (auto arg = argp; *arg; ++arg) { + auto key = *arg; + if (*key) { + if (!file && file_flag) { + file = key; + } - case OPT_QUIET: - close_stdio(); - break; + std::ofstream fstream{}; + std::ostream *ostream = check_ostream(opt, file, fstream); - 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); }