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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 "cmTransformDepfile.h"
#include <functional>
#include <string>
#include <type_traits>
#include <utility>
#include <vector>
#include <cm/optional>
#include "cmsys/FStream.hxx"
#include "cmGccDepfileReader.h"
#include "cmGccDepfileReaderTypes.h"
#include "cmGlobalGenerator.h"
#include "cmLocalGenerator.h"
#include "cmSystemTools.h"
namespace {
void WriteFilenameGcc(cmsys::ofstream& fout, const std::string& filename)
{
for (auto c : filename) {
switch (c) {
case ' ':
fout << "\\ ";
break;
case '\\':
fout << "\\\\";
break;
default:
fout << c;
break;
}
}
}
void WriteGccDepfile(cmsys::ofstream& fout, const cmLocalGenerator& lg,
const cmGccDepfileContent& content)
{
const auto& binDir = lg.GetBinaryDirectory();
std::function<std::string(const std::string&)> formatPath =
[&lg, &binDir](const std::string& path) -> std::string {
return lg.MaybeConvertToRelativePath(binDir, path);
};
if (lg.GetGlobalGenerator()->GetName() == "Xcode") {
// full paths must be preserved for Xcode compliance
formatPath = [](const std::string& path) -> std::string { return path; };
}
for (auto const& dep : content) {
bool first = true;
for (auto const& rule : dep.rules) {
if (!first) {
fout << " \\\n ";
}
first = false;
WriteFilenameGcc(fout, formatPath(rule));
}
fout << ':';
for (auto const& path : dep.paths) {
fout << " \\\n ";
WriteFilenameGcc(fout, formatPath(path));
}
fout << '\n';
}
}
// tlog format : always windows paths on Windows regardless the generator
std::string ConvertToTLogOutputPath(const std::string& path)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
return cmSystemTools::ConvertToWindowsOutputPath(path);
#else
return cmSystemTools::ConvertToOutputPath(path);
#endif
}
void WriteVsTlog(cmsys::ofstream& fout, const cmLocalGenerator& lg,
const cmGccDepfileContent& content)
{
const auto& binDir = lg.GetBinaryDirectory();
for (auto const& dep : content) {
fout << '^';
bool first = true;
for (auto const& rule : dep.rules) {
if (!first) {
fout << '|';
}
first = false;
fout << ConvertToTLogOutputPath(
lg.MaybeConvertToRelativePath(binDir, rule));
}
fout << "\r\n";
for (auto const& path : dep.paths) {
fout << ConvertToTLogOutputPath(
lg.MaybeConvertToRelativePath(binDir, path))
<< "\r\n";
}
}
}
}
bool cmTransformDepfile(cmDepfileFormat format, const cmLocalGenerator& lg,
const std::string& infile, const std::string& outfile)
{
cmGccDepfileContent content;
if (cmSystemTools::FileExists(infile)) {
auto result =
cmReadGccDepfile(infile.c_str(), lg.GetCurrentBinaryDirectory());
if (!result) {
return false;
}
content = *std::move(result);
}
cmsys::ofstream fout(outfile.c_str());
if (!fout) {
return false;
}
switch (format) {
case cmDepfileFormat::GccDepfile:
WriteGccDepfile(fout, lg, content);
break;
case cmDepfileFormat::VsTlog:
WriteVsTlog(fout, lg, content);
break;
}
return true;
}
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