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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmGeneratorExpressionEvaluationFile.h"
#include "cmConfigure.h"
#include "cmsys/FStream.hxx"
#include <sstream>
#include <utility>
#include "cmGeneratedFileStream.h"
#include "cmGlobalGenerator.h"
#include "cmListFileCache.h"
#include "cmLocalGenerator.h"
#include "cmMakefile.h"
#include "cmSourceFile.h"
#include "cmSystemTools.h"
#include "cm_auto_ptr.hxx"
#include "cmake.h"
cmGeneratorExpressionEvaluationFile::cmGeneratorExpressionEvaluationFile(
const std::string& input,
CM_AUTO_PTR<cmCompiledGeneratorExpression> outputFileExpr,
CM_AUTO_PTR<cmCompiledGeneratorExpression> condition, bool inputIsContent)
: Input(input)
, OutputFileExpr(outputFileExpr)
, Condition(condition)
, InputIsContent(inputIsContent)
{
}
void cmGeneratorExpressionEvaluationFile::Generate(
cmLocalGenerator* lg, const std::string& config, const std::string& lang,
cmCompiledGeneratorExpression* inputExpression,
std::map<std::string, std::string>& outputFiles, mode_t perm)
{
std::string rawCondition = this->Condition->GetInput();
if (!rawCondition.empty()) {
std::string condResult = this->Condition->Evaluate(
lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
if (condResult == "0") {
return;
}
if (condResult != "1") {
std::ostringstream e;
e << "Evaluation file condition \"" << rawCondition
<< "\" did "
"not evaluate to valid content. Got \""
<< condResult << "\".";
lg->IssueMessage(cmake::FATAL_ERROR, e.str());
return;
}
}
const std::string outputFileName = this->OutputFileExpr->Evaluate(
lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
const std::string outputContent = inputExpression->Evaluate(
lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
std::map<std::string, std::string>::iterator it =
outputFiles.find(outputFileName);
if (it != outputFiles.end()) {
if (it->second == outputContent) {
return;
}
std::ostringstream e;
e << "Evaluation file to be written multiple times with different "
"content. "
"This is generally caused by the content evaluating the "
"configuration type, language, or location of object files:\n "
<< outputFileName;
lg->IssueMessage(cmake::FATAL_ERROR, e.str());
return;
}
lg->GetMakefile()->AddCMakeOutputFile(outputFileName);
this->Files.push_back(outputFileName);
outputFiles[outputFileName] = outputContent;
cmGeneratedFileStream fout(outputFileName.c_str());
fout.SetCopyIfDifferent(true);
fout << outputContent;
if (fout.Close() && perm) {
cmSystemTools::SetPermissions(outputFileName.c_str(), perm);
}
}
void cmGeneratorExpressionEvaluationFile::CreateOutputFile(
cmLocalGenerator* lg, std::string const& config)
{
std::vector<std::string> enabledLanguages;
cmGlobalGenerator* gg = lg->GetGlobalGenerator();
gg->GetEnabledLanguages(enabledLanguages);
for (std::vector<std::string>::const_iterator le = enabledLanguages.begin();
le != enabledLanguages.end(); ++le) {
std::string name = this->OutputFileExpr->Evaluate(
lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, *le);
cmSourceFile* sf = lg->GetMakefile()->GetOrCreateSource(name);
sf->SetProperty("GENERATED", "1");
gg->SetFilenameTargetDepends(
sf, this->OutputFileExpr->GetSourceSensitiveTargets());
}
}
void cmGeneratorExpressionEvaluationFile::Generate(cmLocalGenerator* lg)
{
mode_t perm = 0;
std::string inputContent;
if (this->InputIsContent) {
inputContent = this->Input;
} else {
lg->GetMakefile()->AddCMakeDependFile(this->Input);
cmSystemTools::GetPermissions(this->Input.c_str(), perm);
cmsys::ifstream fin(this->Input.c_str());
if (!fin) {
std::ostringstream e;
e << "Evaluation file \"" << this->Input << "\" cannot be read.";
lg->IssueMessage(cmake::FATAL_ERROR, e.str());
return;
}
std::string line;
std::string sep;
while (cmSystemTools::GetLineFromStream(fin, line)) {
inputContent += sep + line;
sep = "\n";
}
inputContent += sep;
}
cmListFileBacktrace lfbt = this->OutputFileExpr->GetBacktrace();
cmGeneratorExpression contentGE(lfbt);
CM_AUTO_PTR<cmCompiledGeneratorExpression> inputExpression =
contentGE.Parse(inputContent);
std::map<std::string, std::string> outputFiles;
std::vector<std::string> allConfigs;
lg->GetMakefile()->GetConfigurations(allConfigs);
if (allConfigs.empty()) {
allConfigs.push_back("");
}
std::vector<std::string> enabledLanguages;
cmGlobalGenerator* gg = lg->GetGlobalGenerator();
gg->GetEnabledLanguages(enabledLanguages);
for (std::vector<std::string>::const_iterator le = enabledLanguages.begin();
le != enabledLanguages.end(); ++le) {
for (std::vector<std::string>::const_iterator li = allConfigs.begin();
li != allConfigs.end(); ++li) {
this->Generate(lg, *li, *le, inputExpression.get(), outputFiles, perm);
if (cmSystemTools::GetFatalErrorOccured()) {
return;
}
}
}
}
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