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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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82 lines
2.9 KiB
82 lines
2.9 KiB
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// Copyright 2015 gRPC authors. |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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// |
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#ifndef GRPC_TEST_CORE_UTIL_CMDLINE_H |
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#define GRPC_TEST_CORE_UTIL_CMDLINE_H |
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#include <grpc/support/port_platform.h> |
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#include <string> |
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/// Simple command line parser. |
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/// Supports flags that can be specified as -foo, --foo, --no-foo, -no-foo, etc |
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/// And integers, strings that can be specified as -foo=4, -foo blah, etc |
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/// No support for short command line options (but we may get that in the |
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/// future.) |
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/// Usage (for a program with a single flag argument 'foo'): |
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/// int main(int argc, char **argv) { |
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/// gpr_cmdline *cl; |
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/// int verbose = 0; |
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/// cl = gpr_cmdline_create("My cool tool"); |
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/// gpr_cmdline_add_int(cl, "verbose", "Produce verbose output?", &verbose); |
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/// gpr_cmdline_parse(cl, argc, argv); |
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/// gpr_cmdline_destroy(cl); |
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/// if (verbose) { |
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/// gpr_log(GPR_INFO, "Goodbye cruel world!"); |
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/// } |
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/// return 0; |
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///} |
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typedef struct gpr_cmdline gpr_cmdline; |
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/// Construct a command line parser: takes a short description of the tool |
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/// doing the parsing |
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gpr_cmdline* gpr_cmdline_create(const char* description); |
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/// Add an integer parameter, with a name (used on the command line) and some |
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/// helpful text (used in the command usage) |
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void gpr_cmdline_add_int(gpr_cmdline* cl, const char* name, const char* help, |
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int* value); |
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/// The same, for a boolean flag |
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void gpr_cmdline_add_flag(gpr_cmdline* cl, const char* name, const char* help, |
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int* value); |
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/// And for a string |
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void gpr_cmdline_add_string(gpr_cmdline* cl, const char* name, const char* help, |
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const char** value); |
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/// Set a callback for non-named arguments |
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void gpr_cmdline_on_extra_arg( |
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gpr_cmdline* cl, const char* name, const char* help, |
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void (*on_extra_arg)(void* user_data, const char* arg), void* user_data); |
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/// Enable surviving failure: default behavior is to exit the process |
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void gpr_cmdline_set_survive_failure(gpr_cmdline* cl); |
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/// Parse the command line; returns 1 on success, on failure either dies |
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///(by default) or returns 0 if gpr_cmdline_set_survive_failure() has been |
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/// called |
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int gpr_cmdline_parse(gpr_cmdline* cl, int argc, char** argv); |
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/// Destroy the parser |
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void gpr_cmdline_destroy(gpr_cmdline* cl); |
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/// Get a string describing usage |
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std::string gpr_cmdline_usage_string(gpr_cmdline* cl, const char* argv0); |
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#endif // GRPC_TEST_CORE_UTIL_CMDLINE_H
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