Provided by: libczmq-dev_4.1.0-2_amd64 
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, NULL if no given parameter has
// been specified, or special value for wich zargs_param_empty ()
// returns true.
CZMQ_EXPORT const char *
zargs_param_lookup (zargs_t *self, const char *keys);
// *** Draft method, for development use, may change without warning ***
// Return value of named parameter(s), NULL if no given parameter has
// been specified, or special value for wich zargs_param_empty ()
// returns true.
CZMQ_EXPORT const char *
zargs_param_lookupx (zargs_t *self, const char *keys, ...);
// *** Draft method, for development use, may change without warning ***
// Returns true if there are --help -h arguments
CZMQ_EXPORT bool
zargs_has_help (zargs_t *self);
// *** Draft method, for development use, may change without warning ***
// Returns true if parameter did not have a value
CZMQ_EXPORT bool
zargs_param_empty (const char *arg);
// *** 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 delimits 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_param_empty (zargs_param_lookup (self, "--named1")));
assert (!zargs_param_empty (zargs_param_lookup (self, "-n1")));
assert (streq (zargs_param_lookupx (self, "--not at all", "-n1", NULL), "val1"));
// TODO: this does not look like an easy hack w/o allocating extra memory
// ???
//assert (streq (zargs_param_lookup (self, "--with", NULL), "value2"));
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 License, 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