87 lines
1.8 KiB
C++
87 lines
1.8 KiB
C++
#include "cmListFileCache.h"
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#include "cmSystemTools.h"
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cmListFileCache* cmListFileCache::Instance = 0;
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cmListFileCache* cmListFileCache::GetInstance()
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{
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if(!cmListFileCache::Instance)
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{
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cmListFileCache::Instance = new cmListFileCache;
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}
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return cmListFileCache::Instance;
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}
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void cmListFileCache::ClearCache()
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{
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delete cmListFileCache::Instance;
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cmListFileCache::Instance = 0;
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}
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cmListFile* cmListFileCache::GetFileCache(const char* path)
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{
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ListFileMap::iterator sl = m_ListFileCache.find(path);
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if (sl == m_ListFileCache.end())
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{
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// if not already in the map, then parse and store the
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// file
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if(!this->CacheFile(path))
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{
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return 0;
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}
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sl = m_ListFileCache.find(path);
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if (sl == m_ListFileCache.end())
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{
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cmSystemTools::Error("Fatal error, in cmListFileCache CacheFile failed",
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path);
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return 0;
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}
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}
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cmListFile& ret = sl->second;
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if(cmSystemTools::ModifiedTime(path) > ret.m_ModifiedTime )
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{
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if(!this->CacheFile(path))
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{
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return 0;
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}
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else
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{
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sl = m_ListFileCache.find(path);
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return &sl->second;
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}
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}
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return &ret;
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}
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bool cmListFileCache::CacheFile(const char* path)
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{
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std::ifstream fin(path);
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if(!fin)
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{
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cmSystemTools::Error("error can not open file ", path);
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return false;
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}
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std::string name;
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std::vector<std::string> arguments;
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cmListFile inFile;
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inFile.m_ModifiedTime = cmSystemTools::ModifiedTime(path);
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while ( fin )
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{
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cmListFileFunction inFunction;
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if(cmSystemTools::ParseFunction(fin,
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inFunction.m_Name,
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inFunction.m_Arguments))
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{
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inFile.m_Functions.push_back(inFunction);
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}
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}
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m_ListFileCache[path] = inFile;
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return true;
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}
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