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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 "cmWriteFileCommand.h"
#include "cmsys/FStream.hxx"
#include "cm_sys_stat.h"
#include "cmExecutionStatus.h"
#include "cmMakefile.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
// cmLibraryCommand
bool cmWriteFileCommand(std::vector<std::string> const& args,
cmExecutionStatus& status)
{
if (args.size() < 2) {
status.SetError("called with incorrect number of arguments");
return false;
}
std::string message;
auto i = args.begin();
std::string const& fileName = *i;
bool overwrite = true;
i++;
for (; i != args.end(); ++i) {
if (*i == "APPEND") {
overwrite = false;
} else {
message += *i;
}
}
if (!status.GetMakefile().CanIWriteThisFile(fileName)) {
std::string e =
"attempted to write a file: " + fileName + " into a source directory.";
status.SetError(e);
cmSystemTools::SetFatalErrorOccured();
return false;
}
std::string dir = cmSystemTools::GetFilenamePath(fileName);
cmSystemTools::MakeDirectory(dir);
mode_t mode = 0;
bool writable = false;
// Set permissions to writable
if (cmSystemTools::GetPermissions(fileName.c_str(), mode)) {
#if defined(_MSC_VER) || defined(__MINGW32__)
writable = (mode & S_IWRITE) != 0;
mode_t newMode = mode | S_IWRITE;
#else
writable = mode & S_IWUSR;
mode_t newMode = mode | S_IWUSR | S_IWGRP;
#endif
if (!writable) {
cmSystemTools::SetPermissions(fileName.c_str(), newMode);
}
}
// If GetPermissions fails, pretend like it is ok. File open will fail if
// the file is not writable
cmsys::ofstream file(fileName.c_str(),
overwrite ? std::ios::out : std::ios::app);
if (!file) {
std::string error =
cmStrCat("Internal CMake error when trying to open file: ", fileName,
" for writing.");
status.SetError(error);
return false;
}
file << message << '\n';
file.close();
if (mode && !writable) {
cmSystemTools::SetPermissions(fileName.c_str(), mode);
}
return true;
}
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