ZARGS(3) CZMQ Manual ZARGS(3) NAME zargs - Class for Platform independent command line argument parsing helpers SYNOPSIS // This is a draft class, and may change without notice. It is disabled in // stable builds by default. If you use this in applications, please ask // for it to be pushed to stable state. Use --enable-drafts to enable. #ifdef CZMQ_BUILD_DRAFT_API // *** Draft method, for development use, may change without warning *** // Create a new zargs from command line arguments. CZMQ_EXPORT zargs_t * zargs_new (int argc, char **argv); // *** Draft method, for development use, may change without warning *** // Destroy zargs instance. CZMQ_EXPORT void zargs_destroy (zargs_t **self_p); // *** Draft method, for development use, may change without warning *** // Return program name (argv[0]) CZMQ_EXPORT const char * zargs_progname (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Return number of positional arguments CZMQ_EXPORT size_t zargs_arguments (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Return first positional argument or NULL CZMQ_EXPORT const char * zargs_first (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Return next positional argument or NULL CZMQ_EXPORT const char * zargs_next (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Return first named parameter value, or NULL if there are no named // parameters, or value for which zargs_param_empty (arg) returns true. CZMQ_EXPORT const char * zargs_param_first (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Return next named parameter value, or NULL if there are no named // parameters, or value for which zargs_param_empty (arg) returns true. CZMQ_EXPORT const char * zargs_param_next (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Return current parameter name, or NULL if there are no named parameters. CZMQ_EXPORT const char * zargs_param_name (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Return value of named parameter or NULL is it has no value (or was not specified) CZMQ_EXPORT const char * zargs_get (zargs_t *self, const char *name); // *** Draft method, for development use, may change without warning *** // Return value of one of parameter(s) or NULL is it has no value (or was not specified) CZMQ_EXPORT const char * zargs_getx (zargs_t *self, const char *name, ...); // *** Draft method, for development use, may change without warning *** // Returns true if named parameter was specified on command line CZMQ_EXPORT bool zargs_has (zargs_t *self, const char *name); // *** Draft method, for development use, may change without warning *** // Returns true if named parameter(s) was specified on command line CZMQ_EXPORT bool zargs_hasx (zargs_t *self, const char *name, ...); // *** Draft method, for development use, may change without warning *** // Print an instance of zargs. CZMQ_EXPORT void zargs_print (zargs_t *self); // *** Draft method, for development use, may change without warning *** // Self test of this class. CZMQ_EXPORT void zargs_test (bool verbose); #endif // CZMQ_BUILD_DRAFT_API Please add '@interface' section in './../src/zargs.c'. DESCRIPTION zargs - Platform independent command line argument parsing helpers Platform independent command line argument parsing helpers There are two kind of elements provided by this class foo --named-parameter --parameter with_value positional arguments -a gain-parameter zargs keeps poision only for arguments, parameters are to be accessed like hash. It DOES: * provide easy to use CLASS compatible API for accessing argv * is platform independent * provide getopt_long style -- argument, which delim- its parameters from arguments * makes parameters positon independent It does NOT * change argv * provide a "declarative" way to define command line interface In future it SHALL * hide several formats of command line to one (-Idir, --include=dir, --include dir are the same from API pov) Please add @discuss section in ./../src/zargs.c. EXAMPLE From zargs_test method. // Simple create/destroy test char *argv1[] = {"progname", "--named1", "-n1", "val1", "positional1", "--with", "value", "--with2=value2", "-W3value3", "--", "--thisis", "considered", "positional", NULL}; zargs_t *self = zargs_new (13, argv1); assert (self); assert (streq (zargs_progname (self), "progname")); assert (streq (zargs_first (self), "positional1")); assert (streq (zargs_next (self), "--thisis")); assert (streq (zargs_next (self), "considered")); assert (streq (zargs_next (self), "positional")); assert (!zargs_next (self)); assert (zargs_has (self, "--named1")); assert (zargs_has (self, "-n1")); assert (!zargs_has (self, "--not at all")); assert (!(zargs_get (self, "--named1"))); assert (streq (zargs_get (self, "-n1"), "val1")); // common usages - test for -h/--help bool has_help = zargs_hasx (self, "--help", "-h", NULL); assert (!has_help); zargs_destroy (&self); AUTHORS The czmq manual was written by the authors in the AUTHORS file. RESOURCES Main web site: Report bugs to the email <zeromq-dev@lists.zeromq.org[1]> COPYRIGHT Copyright (c) the Contributors as noted in the AUTHORS file. This file is part of CZMQ, the high-level C binding for 0MQ: http://czmq.zeromq.org. This Source Code Form is subject to the terms of the Mozilla Public Li- cense, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. LICENSE included with the czmq distribution. NOTES 1. zeromq-dev@lists.zeromq.org mailto:zeromq-dev@lists.zeromq.org CZMQ 4.2.1 08/27/2026 ZARGS(3)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLE | AUTHORS | RESOURCES | COPYRIGHT | NOTES
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