41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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//
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// Flag validation help functions.
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#include "packager/app/validate_flag.h"
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#include <stdio.h>
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#include "packager/base/strings/stringprintf.h"
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namespace shaka {
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bool ValidateFlag(const char* flag_name,
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const std::string& flag_value,
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bool condition,
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bool optional,
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const char* label) {
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if (flag_value.empty()) {
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if (!optional && condition) {
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PrintError(
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base::StringPrintf("--%s is required if %s.", flag_name, label));
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return false;
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}
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} else if (!condition) {
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PrintError(base::StringPrintf(
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"--%s should be specified only if %s.", flag_name, label));
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return false;
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}
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return true;
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}
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void PrintError(const std::string& error_message) {
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fprintf(stderr, "ERROR: %s\n", error_message.c_str());
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}
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} // namespace shaka
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