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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2000 National Library of Medicine
All rights reserved.
See COPYRIGHT.txt for copyright details.
=========================================================================*/
#include "cmCacheManager.h"
#include "cmSystemTools.h"
#include "cmCacheManager.h"
#include "cmMakefile.h"
#include "cmRegularExpression.h"
const char* cmCacheManagerTypes[] =
{ "BOOL",
"PATH",
"FILEPATH",
"STRING",
"INTERNAL",
0
};
cmCacheManager::CacheEntryType cmCacheManager::StringToType(const char* s)
{
int i = 0;
while(cmCacheManagerTypes[i])
{
if(strcmp(s, cmCacheManagerTypes[i]) == 0)
{
return static_cast<CacheEntryType>(i);
}
++i;
}
return STRING;
}
cmCacheManager* cmCacheManager::s_Instance = 0;
cmCacheManager* cmCacheManager::GetInstance()
{
if(!cmCacheManager::s_Instance)
{
cmCacheManager::s_Instance = new cmCacheManager;
}
return cmCacheManager::s_Instance;
}
bool cmCacheManager::LoadCache(cmMakefile* mf)
{
std::string cacheFile = mf->GetHomeOutputDirectory();
cacheFile += "/CMakeCache.txt";
// clear the old cache
m_Cache.clear();
std::ifstream fin(cacheFile.c_str());
if(!fin)
{
return false;
}
const int bsize = 4096;
char buffer[bsize];
// input line is: key:type=value
cmRegularExpression reg("(.*):(.*)=(.*)");
while(fin)
{
// Format is key:type=value
CacheEntry e;
fin.getline(buffer, bsize);
// skip blank lines and comment lines
if(buffer[0] == '#' || buffer[0] == 0)
{
continue;
}
if(reg.find(buffer))
{
e.m_Type = cmCacheManager::StringToType(reg.match(2).c_str());
e.m_Value = reg.match(3);
m_Cache[reg.match(1)] = e;
}
else
{
cmSystemTools::Error("Parse error in cache file ", cacheFile.c_str());
}
}
return true;
}
bool cmCacheManager::SaveCache(cmMakefile* mf)
{
std::string cacheFile = mf->GetHomeOutputDirectory();
cacheFile += "/CMakeCache.txt";
std::string tempFile = cacheFile;
tempFile += ".tmp";
std::ofstream fout(tempFile.c_str());
if(!fout)
{
cmSystemTools::Error("Unable to open cache file for save. ",
cacheFile.c_str());
return false;
}
fout << "# This is the CMakeCache file.\n"
<< "# You can edit this file to change values found and used by cmake.\n"
<< "# If you do not want to change any of the values, simply exit the editor.\n"
<< "# If you do want to change a value, simply edit, save, and exit the editor.\n"
<< "# The syntax for the file is as follows:\n"
<< "# KEY:TYPE=VALUE\n"
<< "# KEY is the name of a varible in the cache.\n"
<< "# TYPE is a hint to GUI's for the type of VALUE, DO NOT EDIT TYPE!.\n"
<< "# VALUE is the current value for the KEY.\n\n";
for( std::map<std::string, CacheEntry>::iterator i = m_Cache.begin();
i != m_Cache.end(); ++i)
{
CacheEntryType t = (*i).second.m_Type;
// Format is key:type=value
fout << (*i).first.c_str() << ":"
<< cmCacheManagerTypes[t] << "="
<< (*i).second.m_Value << "\n";
}
fout << "\n";
fout.close();
cmSystemTools::CopyFileIfDifferent(tempFile.c_str(),
cacheFile.c_str());
cmSystemTools::RemoveFile(tempFile.c_str());
return true;
}
void cmCacheManager::AddCacheEntry(const char* key,
const char* value,
CacheEntryType type)
{
CacheEntry e;
e.m_Value = value;
e.m_Type = type;
m_Cache[key] = e;
}
const char* cmCacheManager::GetCacheValue(const char* key)
{
if(m_Cache.count(key))
{
return m_Cache[key].m_Value.c_str();
}
return 0;
}
void cmCacheManager::PrintCache(std::ostream& out)
{
out << "=================================================" << std::endl;
out << "CMakeCache Contents:" << std::endl;
for(std::map<std::string, CacheEntry>::iterator i = m_Cache.begin();
i != m_Cache.end(); ++i)
{
out << (*i).first.c_str() << " = " << (*i).second.m_Value.c_str() << std::endl;
}
out << "\n\n";
out << "To change values in the CMakeCache, \nedit CMakeCache.txt in your output directory.\n";
out << "=================================================" << std::endl;
}
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