// 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;
}
