Ninja
version.cc
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00001 // Copyright 2013 Google Inc. All Rights Reserved.
00002 //
00003 // Licensed under the Apache License, Version 2.0 (the "License");
00004 // you may not use this file except in compliance with the License.
00005 // You may obtain a copy of the License at
00006 //
00007 //     http://www.apache.org/licenses/LICENSE-2.0
00008 //
00009 // Unless required by applicable law or agreed to in writing, software
00010 // distributed under the License is distributed on an "AS IS" BASIS,
00011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00012 // See the License for the specific language governing permissions and
00013 // limitations under the License.
00014 
00015 #include "version.h"
00016 
00017 #include <stdlib.h>
00018 
00019 #include "util.h"
00020 
00021 const char* kNinjaVersion = "1.3.4";
00022 
00023 void ParseVersion(const string& version, int* major, int* minor) {
00024   size_t end = version.find('.');
00025   *major = atoi(version.substr(0, end).c_str());
00026   *minor = 0;
00027   if (end != string::npos) {
00028     size_t start = end + 1;
00029     end = version.find('.', start);
00030     *minor = atoi(version.substr(start, end).c_str());
00031   }
00032 }
00033 
00034 void CheckNinjaVersion(const string& version) {
00035   int bin_major, bin_minor;
00036   ParseVersion(kNinjaVersion, &bin_major, &bin_minor);
00037   int file_major, file_minor;
00038   ParseVersion(version, &file_major, &file_minor);
00039 
00040   if (bin_major > file_major) {
00041     Warning("ninja executable version (%s) greater than build file "
00042             "ninja_required_version (%s); versions may be incompatible.",
00043             kNinjaVersion, version.c_str());
00044     return;
00045   }
00046 
00047   if ((bin_major == file_major && bin_minor < file_minor) ||
00048       bin_major < file_major) {
00049     Fatal("ninja version (%s) incompatible with build file "
00050           "ninja_required_version version (%s).",
00051           kNinjaVersion, version.c_str());
00052   }
00053 }