// Returns true on error.
static bool format(StringRef FileName) {
ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
MemoryBuffer::getFileOrSTDIN(FileName);
if (std::error_code EC = CodeOrErr.getError()) {
llvm::errs() << EC.message() << "\n";
return true;
}
std::unique_ptr<llvm::MemoryBuffer> Code = std::move(CodeOrErr.get());
if (Code->getBufferSize() == 0)
return false; // Empty files are formatted correctly.
FormatterDocument Doc(std::move(Code));
if (!Offsets.empty() || !Lengths.empty()) {
if (Offsets.size() != Lengths.size()) {
llvm::errs() << "error: number of offsets not equal to number of lengths.\n";
return true;
}
for ( unsigned i=0 ; i < Offsets.size() ; i++ ) {
unsigned FromLine = Doc.getLineAndColumn(Offsets[i]).first;
unsigned ToLine = Doc.getLineAndColumn(Offsets[i] + Lengths[i]).first;
if (ToLine == 0) {
llvm::errs() << "error: offset + length after end of file\n";
return true;
}
std::ostringstream s;
s << FromLine << ":" << ToLine;
LineRanges.push_back(s.str());
}
}
if (LineRanges.empty())
LineRanges.push_back("1:999999");
std::string Output = Doc.memBuffer().getBuffer();
Replacements Replaces;
for ( unsigned Range = 0 ; Range < LineRanges.size() ; Range++ ) {
unsigned FromLine, ToLine;
if (parseLineRange(LineRanges[Range], FromLine, ToLine)) {
llvm::errs() << "error: invalid <start line>:<end line> pair\n";
return true;
}
if (FromLine > ToLine) {
llvm::errs() << "error: start line should be less than end line\n";
return true;
}
for ( unsigned Line = FromLine ; Line<=ToLine ; Line++ ) {
size_t Offset = getOffsetOfLine(Line,Output);
ssize_t Length = getOffsetOfLine(Line+1,Output)-1-Offset;
if (Length < 0)
break;
std::string Formatted = Doc.reformat(LineRange(Line,1), FormatOptions).second;
if (Formatted.find_first_not_of(" \t\v\f", 0) == StringRef::npos)
Formatted = "";
if (Formatted == Output.substr(Offset, Length))
continue;
Output.replace(Offset, Length, Formatted);
Doc.updateCode(std::move(MemoryBuffer::getMemBuffer(Output)));
Replaces.insert(clang::tooling::Replacement(FileName, Offset, Length, Formatted));
}
}
if (OutputXML) {
llvm::outs() << "<?xml version='1.0'?>\n<replacements>\n";
outputReplacementsXML(Replaces);
llvm::outs() << "</replacements>\n";
} else {
if (Inplace) {
if (FileName == "-") {
llvm::errs() << "error: cannot use -i when reading from stdin.\n";
return true;
}
else {
std::error_code EC;
raw_fd_ostream writer(FileName, EC, llvm::sys::fs::F_None);
if (EC) {
llvm::errs() << "error: writing " << FileName << ": " << EC.message() << "\n";
return true;
}
writer << Output;
}
} else {
llvm::outs() << Output;
}
}
return false;
}
// Returns true on error.
static bool format(StringRef FileName) {
ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
MemoryBuffer::getFileOrSTDIN(FileName);
if (std::error_code EC = CodeOrErr.getError()) {
errs() << EC.message() << "\n";
return true;
}
std::unique_ptr<llvm::MemoryBuffer> Code = std::move(CodeOrErr.get());
if (Code->getBufferSize() == 0)
return false; // Empty files are formatted correctly.
std::vector<tooling::Range> Ranges;
if (fillRanges(Code.get(), Ranges))
return true;
StringRef AssumedFileName = (FileName == "-") ? AssumeFileName : FileName;
FormatStyle FormatStyle = getStyle(Style, AssumedFileName, FallbackStyle);
if (SortIncludes.getNumOccurrences() != 0)
FormatStyle.SortIncludes = SortIncludes;
unsigned CursorPosition = Cursor;
Replacements Replaces = sortIncludes(FormatStyle, Code->getBuffer(), Ranges,
AssumedFileName, &CursorPosition);
auto ChangedCode = tooling::applyAllReplacements(Code->getBuffer(), Replaces);
if (!ChangedCode) {
llvm::errs() << llvm::toString(ChangedCode.takeError()) << "\n";
return true;
}
for (const auto &R : Replaces)
Ranges.push_back({R.getOffset(), R.getLength()});
bool IncompleteFormat = false;
Replacements FormatChanges = reformat(FormatStyle, *ChangedCode, Ranges,
AssumedFileName, &IncompleteFormat);
Replaces = tooling::mergeReplacements(Replaces, FormatChanges);
if (OutputXML) {
outs() << "<?xml version='1.0'?>\n<replacements "
"xml:space='preserve' incomplete_format='"
<< (IncompleteFormat ? "true" : "false") << "'>\n";
if (Cursor.getNumOccurrences() != 0)
outs() << "<cursor>"
<< tooling::shiftedCodePosition(FormatChanges, CursorPosition)
<< "</cursor>\n";
outputReplacementsXML(Replaces);
outs() << "</replacements>\n";
} else {
IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
new vfs::InMemoryFileSystem);
FileManager Files(FileSystemOptions(), InMemoryFileSystem);
DiagnosticsEngine Diagnostics(
IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs),
new DiagnosticOptions);
SourceManager Sources(Diagnostics, Files);
FileID ID = createInMemoryFile(AssumedFileName, Code.get(), Sources, Files,
InMemoryFileSystem.get());
Rewriter Rewrite(Sources, LangOptions());
tooling::applyAllReplacements(Replaces, Rewrite);
if (Inplace) {
if (FileName == "-")
errs() << "error: cannot use -i when reading from stdin.\n";
else if (Rewrite.overwriteChangedFiles())
return true;
} else {
if (Cursor.getNumOccurrences() != 0)
outs() << "{ \"Cursor\": "
<< tooling::shiftedCodePosition(FormatChanges, CursorPosition)
<< ", \"IncompleteFormat\": "
<< (IncompleteFormat ? "true" : "false") << " }\n";
Rewrite.getEditBuffer(ID).write(outs());
}
}
return false;
}
// Returns true on error.
static bool format(StringRef FileName) {
if (!OutputXML && Inplace && FileName == "-") {
errs() << "error: cannot use -i when reading from stdin.\n";
return false;
}
// On Windows, overwriting a file with an open file mapping doesn't work,
// so read the whole file into memory when formatting in-place.
ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
!OutputXML && Inplace ? MemoryBuffer::getFileAsStream(FileName) :
MemoryBuffer::getFileOrSTDIN(FileName);
if (std::error_code EC = CodeOrErr.getError()) {
errs() << EC.message() << "\n";
return true;
}
std::unique_ptr<llvm::MemoryBuffer> Code = std::move(CodeOrErr.get());
if (Code->getBufferSize() == 0)
return false; // Empty files are formatted correctly.
std::vector<tooling::Range> Ranges;
if (fillRanges(Code.get(), Ranges))
return true;
StringRef AssumedFileName = (FileName == "-") ? AssumeFileName : FileName;
llvm::Expected<FormatStyle> FormatStyle =
getStyle(Style, AssumedFileName, FallbackStyle, Code->getBuffer());
if (!FormatStyle) {
llvm::errs() << llvm::toString(FormatStyle.takeError()) << "\n";
return true;
}
if (SortIncludes.getNumOccurrences() != 0)
FormatStyle->SortIncludes = SortIncludes;
unsigned CursorPosition = Cursor;
Replacements Replaces = sortIncludes(*FormatStyle, Code->getBuffer(), Ranges,
AssumedFileName, &CursorPosition);
auto ChangedCode = tooling::applyAllReplacements(Code->getBuffer(), Replaces);
if (!ChangedCode) {
llvm::errs() << llvm::toString(ChangedCode.takeError()) << "\n";
return true;
}
// Get new affected ranges after sorting `#includes`.
Ranges = tooling::calculateRangesAfterReplacements(Replaces, Ranges);
FormattingAttemptStatus Status;
Replacements FormatChanges = reformat(*FormatStyle, *ChangedCode, Ranges,
AssumedFileName, &Status);
Replaces = Replaces.merge(FormatChanges);
if (OutputXML) {
outs() << "<?xml version='1.0'?>\n<replacements "
"xml:space='preserve' incomplete_format='"
<< (Status.FormatComplete ? "false" : "true") << "'";
if (!Status.FormatComplete)
outs() << " line='" << Status.Line << "'";
outs() << ">\n";
if (Cursor.getNumOccurrences() != 0)
outs() << "<cursor>"
<< FormatChanges.getShiftedCodePosition(CursorPosition)
<< "</cursor>\n";
outputReplacementsXML(Replaces);
outs() << "</replacements>\n";
} else {
IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
new vfs::InMemoryFileSystem);
FileManager Files(FileSystemOptions(), InMemoryFileSystem);
DiagnosticsEngine Diagnostics(
IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs),
new DiagnosticOptions);
SourceManager Sources(Diagnostics, Files);
FileID ID = createInMemoryFile(AssumedFileName, Code.get(), Sources, Files,
InMemoryFileSystem.get());
Rewriter Rewrite(Sources, LangOptions());
tooling::applyAllReplacements(Replaces, Rewrite);
if (Inplace) {
if (Rewrite.overwriteChangedFiles())
return true;
} else {
if (Cursor.getNumOccurrences() != 0) {
outs() << "{ \"Cursor\": "
<< FormatChanges.getShiftedCodePosition(CursorPosition)
<< ", \"IncompleteFormat\": "
<< (Status.FormatComplete ? "false" : "true");
if (!Status.FormatComplete)
outs() << ", \"Line\": " << Status.Line;
outs() << " }\n";
}
Rewrite.getEditBuffer(ID).write(outs());
}
}
return false;
}
