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#include "file-util.h"
#include "core/slang-io.h"
namespace CppParse
{
using namespace Slang;
namespace
{ // anonymous
struct DiagnosticReporter
{
SlangResult report(SlangResult res)
{
if (SLANG_FAILED(res))
{
if (m_sink)
{
if (res == SLANG_E_CANNOT_OPEN)
{
m_sink->diagnose(SourceLoc(), CPPDiagnostics::cannotOpenFile, m_filename);
}
else
{
m_sink->diagnose(SourceLoc(), CPPDiagnostics::errorAccessingFile, m_filename);
}
}
}
return res;
}
DiagnosticReporter(const String& filename, DiagnosticSink* sink)
: m_filename(filename), m_sink(sink)
{
}
DiagnosticSink* m_sink;
String m_filename;
};
} // namespace
/* static */ SlangResult FileUtil::readAllText(
const Slang::String& fileName,
DiagnosticSink* sink,
String& outRead)
{
DiagnosticReporter reporter(fileName, sink);
RefPtr<FileStream> stream = new FileStream;
SLANG_RETURN_ON_FAIL(reporter.report(
stream->init(fileName, FileMode::Open, FileAccess::Read, FileShare::ReadWrite)));
StreamReader reader;
SLANG_RETURN_ON_FAIL(reporter.report(reader.init(stream)));
SLANG_RETURN_ON_FAIL(reporter.report(reader.readToEnd(outRead)));
return SLANG_OK;
}
/* static */ SlangResult FileUtil::writeAllText(
const Slang::String& fileName,
DiagnosticSink* sink,
const UnownedStringSlice& text)
{
// TODO(JS):
// There is an optimization/behavior here,that checks if the contents has changed. It only
// writes if it hasn't That might not be what you want (both because of extra work of read, the
// file modified stamp or other reasons, file is write only etc) NOTE! That this also does the
// work of the comparison after it is decoded, but the *bytes* might actually be different.
if (File::exists(fileName))
{
String existingText;
if (SLANG_SUCCEEDED(readAllText(fileName, nullptr, existingText)))
{
if (existingText == text)
return SLANG_OK;
}
}
DiagnosticReporter reporter(fileName, sink);
RefPtr<FileStream> stream = new FileStream;
SLANG_RETURN_ON_FAIL(reporter.report(stream->init(fileName, FileMode::Create)));
StreamWriter writer;
SLANG_RETURN_ON_FAIL(reporter.report(writer.init(stream)));
SLANG_RETURN_ON_FAIL(reporter.report(writer.write(text)))
return SLANG_OK;
}
/* static */ void FileUtil::indent(Index indentCount, StringBuilder& out)
{
for (Index i = 0; i < indentCount; ++i)
{
out << CPP_EXTRACT_INDENT_STRING;
}
}
} // namespace CppParse
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