https://github.com/Kitware/CMake
Revision 80ca30704f0692128dd90e0c82e221788b657744 authored by Brad King on 14 July 2021, 14:06:19 UTC, committed by Kitware Robot on 14 July 2021, 14:06:29 UTC
509ef50a06 ARMClang: Fix regression in check for working compiler Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !6346
Tip revision: 80ca30704f0692128dd90e0c82e221788b657744 authored by Brad King on 14 July 2021, 14:06:19 UTC
Merge topic 'armlink_armar_detection' into release-3.21
Merge topic 'armlink_armar_detection' into release-3.21
Tip revision: 80ca307
cmFilePathChecksum.cxx
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmFilePathChecksum.h"
#include <vector>
#include "cmBase32.h"
#include "cmCryptoHash.h"
#include "cmMakefile.h"
#include "cmSystemTools.h"
cmFilePathChecksum::cmFilePathChecksum() = default;
cmFilePathChecksum::cmFilePathChecksum(std::string const& currentSrcDir,
std::string const& currentBinDir,
std::string const& projectSrcDir,
std::string const& projectBinDir)
{
this->setupParentDirs(currentSrcDir, currentBinDir, projectSrcDir,
projectBinDir);
}
cmFilePathChecksum::cmFilePathChecksum(cmMakefile* makefile)
{
this->setupParentDirs(makefile->GetCurrentSourceDirectory(),
makefile->GetCurrentBinaryDirectory(),
makefile->GetHomeDirectory(),
makefile->GetHomeOutputDirectory());
}
void cmFilePathChecksum::setupParentDirs(std::string const& currentSrcDir,
std::string const& currentBinDir,
std::string const& projectSrcDir,
std::string const& projectBinDir)
{
this->parentDirs[0].first = cmSystemTools::GetRealPath(currentSrcDir);
this->parentDirs[1].first = cmSystemTools::GetRealPath(currentBinDir);
this->parentDirs[2].first = cmSystemTools::GetRealPath(projectSrcDir);
this->parentDirs[3].first = cmSystemTools::GetRealPath(projectBinDir);
this->parentDirs[0].second = "CurrentSource";
this->parentDirs[1].second = "CurrentBinary";
this->parentDirs[2].second = "ProjectSource";
this->parentDirs[3].second = "ProjectBinary";
}
std::string cmFilePathChecksum::get(std::string const& filePath) const
{
std::string relPath;
std::string relSeed;
{
std::string const fileReal = cmSystemTools::GetRealPath(filePath);
std::string parentDir;
// Find closest project parent directory
for (auto const& pDir : this->parentDirs) {
if (!pDir.first.empty() &&
cmsys::SystemTools::IsSubDirectory(fileReal, pDir.first)) {
parentDir = pDir.first;
relSeed = pDir.second;
break;
}
}
// Use file system root as fallback parent directory
if (parentDir.empty()) {
relSeed = "FileSystemRoot";
cmsys::SystemTools::SplitPathRootComponent(fileReal, &parentDir);
}
// Calculate relative path from project parent directory
relPath = cmsys::SystemTools::RelativePath(
parentDir, cmsys::SystemTools::GetParentDirectory(fileReal));
}
// Calculate the file ( seed + relative path ) binary checksum
std::vector<unsigned char> hashBytes =
cmCryptoHash(cmCryptoHash::AlgoSHA256).ByteHashString(relSeed + relPath);
// Convert binary checksum to string
return cmBase32Encoder().encodeString(hashBytes.data(), hashBytes.size(),
false);
}
std::string cmFilePathChecksum::getPart(std::string const& filePath,
size_t length) const
{
return this->get(filePath).substr(0, length);
}
Computing file changes ...