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/*
* libjingle
* Copyright 2004--2010, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include "talk/base/versionparsing.h"
#include <cstdlib>
namespace talk_base {
bool ParseVersionString(const std::string& version_str,
int num_expected_segments,
int version[]) {
size_t pos = 0;
for (int i = 0;;) {
size_t dot_pos = version_str.find('.', pos);
size_t n;
if (dot_pos == std::string::npos) {
// npos here is a special value meaning "to the end of the string"
n = std::string::npos;
} else {
n = dot_pos - pos;
}
version[i] = atoi(version_str.substr(pos, n).c_str());
if (++i >= num_expected_segments) break;
if (dot_pos == std::string::npos) {
// Previous segment was not terminated by a dot, but there's supposed to
// be more segments, so that's an error.
return false;
}
pos = dot_pos + 1;
}
return true;
}
int CompareVersions(const int version1[],
const int version2[],
int num_segments) {
for (int i = 0; i < num_segments; ++i) {
int diff = version1[i] - version2[i];
if (diff != 0) {
return diff;
}
}
return 0;
}
} // namespace talk_base
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