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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 "cmImportedCxxModuleInfo.h"
#include <cstddef>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "cmCryptoHash.h"
#include "cmList.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
bool ImportedCxxModuleLookup::Initialized() const
{
return this->DoneInit;
}
void ImportedCxxModuleLookup::Initialize(std::string const& importedModules)
{
for (auto const& entry : cmList{ importedModules }) {
auto nameSep = entry.find('=');
if (nameSep == std::string::npos) {
// Invalid entry; ignore.
continue;
}
auto name = entry.substr(0, nameSep);
auto sourceSep = entry.find(',', nameSep);
std::string source;
if (sourceSep == std::string::npos) {
source = entry.substr(nameSep + 1);
} else {
source = entry.substr(nameSep + 1, sourceSep - nameSep - 1);
}
std::vector<std::string> bmis;
if (sourceSep != std::string::npos) {
auto bmiPaths = entry.substr(sourceSep + 1);
bmis = cmSystemTools::SplitString(bmiPaths, ',');
}
this->ImportedInfo.emplace(source,
ImportedCxxModuleInfo{ name, std::move(bmis) });
}
this->DoneInit = true;
}
std::string ImportedCxxModuleLookup::BmiNameForSource(std::string const& path)
{
auto genit = this->GeneratorInfo.find(path);
if (genit != this->GeneratorInfo.end()) {
return genit->second.BmiName;
}
auto importit = this->ImportedInfo.find(path);
std::string bmiName;
auto hasher = cmCryptoHash::New("SHA3_512");
constexpr size_t HASH_TRUNCATION = 12;
if (importit != this->ImportedInfo.end()) {
auto safename = hasher->HashString(importit->second.Name);
bmiName = cmStrCat(safename.substr(0, HASH_TRUNCATION), ".bmi");
} else {
auto dirhash = hasher->HashString(path);
bmiName = cmStrCat(dirhash.substr(0, HASH_TRUNCATION), ".bmi");
}
this->GeneratorInfo.emplace(
path, ImportedCxxModuleGeneratorInfo{ &importit->second, bmiName });
return bmiName;
}
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