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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 <algorithm>
#include <functional>
#include <string>
#include <utility>
#include <vector>
#include <cm/optional>
#include "cmsys/FStream.hxx"
#include "cmGccDepfileReader.h"
#include "cmGccDepfileReaderTypes.h"
#include "cmGlobalGenerator.h"
#include "cmLocalGenerator.h"
#include "cmMakefile.h"
#include "cmMessageType.h"
#include "cmStringAlgorithms.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 WriteDepfile(cmDepfileFormat format, cmsys::ofstream& fout,
const cmLocalGenerator& lg,
const cmGccDepfileContent& content)
{
std::function<std::string(const std::string&)> formatPath =
[&lg](const std::string& path) -> std::string {
return lg.MaybeRelativeToTopBinDir(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';
}
if (format == cmDepfileFormat::MakeDepfile) {
// In this case, phony targets must be added for all dependencies
fout << "\n";
for (auto const& dep : content) {
for (auto const& path : dep.paths) {
fout << "\n";
WriteFilenameGcc(fout, formatPath(path));
fout << ":\n";
}
}
}
}
void WriteMSBuildAdditionalInputs(cmsys::ofstream& fout,
cmLocalGenerator const& lg,
cmGccDepfileContent const& content)
{
if (content.empty()) {
return;
}
// Write a UTF-8 BOM so MSBuild knows the encoding when reading the file.
static const char utf8bom[] = { static_cast<char>(0xEF),
static_cast<char>(0xBB),
static_cast<char>(0xBF) };
fout.write(utf8bom, sizeof(utf8bom));
// Write the format expected by MSBuild CustomBuild AdditionalInputs.
const char* sep = "";
for (const auto& c : content) {
for (std::string path : c.paths) {
if (!cmSystemTools::FileIsFullPath(path)) {
path = cmSystemTools::CollapseFullPath(path,
lg.GetCurrentBinaryDirectory());
}
std::replace(path.begin(), path.end(), '/', '\\');
fout << sep << path;
sep = ";";
}
}
fout << "\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);
} else {
lg.GetMakefile()->IssueMessage(
MessageType::WARNING,
cmStrCat("Expected depfile does not exist.\n ", infile));
}
cmSystemTools::MakeDirectory(cmSystemTools::GetFilenamePath(outfile));
cmsys::ofstream fout(outfile.c_str());
if (!fout) {
return false;
}
switch (format) {
case cmDepfileFormat::GccDepfile:
case cmDepfileFormat::MakeDepfile:
WriteDepfile(format, fout, lg, content);
break;
case cmDepfileFormat::MSBuildAdditionalInputs:
WriteMSBuildAdditionalInputs(fout, lg, content);
break;
}
return true;
}
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