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/*
*
* Copyright 2014, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __GRPC_SUPPORT_CMDLINE_H__
#define __GRPC_SUPPORT_CMDLINE_H__
#ifdef __cplusplus
extern "C" {
#endif
/* Simple command line parser.
Supports flags that can be specified as -foo, --foo, --no-foo, -no-foo, etc
And integers, strings that can be specified as -foo=4, -foo blah, etc
No support for short command line options (but we may get that in the
future.)
Usage (for a program with a single flag argument 'foo'):
int main(int argc, char **argv) {
gpr_cmdline *cl;
int verbose = 0;
cl = gpr_cmdline_create("My cool tool");
gpr_cmdline_add_int(cl, "verbose", "Produce verbose output?", &verbose);
gpr_cmdline_parse(cl, argc, argv);
gpr_cmdline_destroy(cl);
if (verbose) {
gpr_log(GPR_INFO, "Goodbye cruel world!");
}
return 0;
} */
typedef struct gpr_cmdline gpr_cmdline;
/* Construct a command line parser: takes a short description of the tool
doing the parsing */
gpr_cmdline *gpr_cmdline_create(const char *description);
/* Add an integer parameter, with a name (used on the command line) and some
helpful text (used in the command usage) */
void gpr_cmdline_add_int(gpr_cmdline *cl, const char *name, const char *help,
int *value);
/* The same, for a boolean flag */
void gpr_cmdline_add_flag(gpr_cmdline *cl, const char *name, const char *help,
int *value);
/* And for a string */
void gpr_cmdline_add_string(gpr_cmdline *cl, const char *name, const char *help,
char **value);
/* Set a callback for non-named arguments */
void gpr_cmdline_on_extra_arg(
gpr_cmdline *cl, const char *name, const char *help,
void (*on_extra_arg)(void *user_data, const char *arg), void *user_data);
/* Parse the command line */
void gpr_cmdline_parse(gpr_cmdline *cl, int argc, char **argv);
/* Destroy the parser */
void gpr_cmdline_destroy(gpr_cmdline *cl);
#ifdef __cplusplus
}
#endif
#endif /* __GRPC_SUPPORT_CMDLINE_H__ */
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