bool SpecialCaseList::Matcher::insert(std::string Regexp,
unsigned LineNumber,
std::string &REError) {
if (Regexp.empty()) {
REError = "Supplied regexp was blank";
return false;
}
if (Regex::isLiteralERE(Regexp)) {
Strings[Regexp] = LineNumber;
return true;
}
Trigrams.insert(Regexp);
// Replace * with .*
for (size_t pos = 0; (pos = Regexp.find('*', pos)) != std::string::npos;
pos += strlen(".*")) {
Regexp.replace(pos, strlen("*"), ".*");
}
Regexp = (Twine("^(") + StringRef(Regexp) + ")$").str();
// Check that the regexp is valid.
Regex CheckRE(Regexp);
if (!CheckRE.isValid(REError))
return false;
RegExes.emplace_back(
std::make_pair(make_unique<Regex>(std::move(CheckRE)), LineNumber));
return true;
}
BlackList::BlackList(const StringRef Path) {
// Validate and open blacklist file.
if (Path.empty()) return;
OwningPtr<MemoryBuffer> File;
if (error_code EC = MemoryBuffer::getFile(Path, File)) {
report_fatal_error("Can't open blacklist file: " + Path + ": " +
EC.message());
}
// Iterate through each line in the blacklist file.
SmallVector<StringRef, 16> Lines;
SplitString(File.take()->getBuffer(), Lines, "\n\r");
StringMap<std::string> Regexps;
for (SmallVector<StringRef, 16>::iterator I = Lines.begin(), E = Lines.end();
I != E; ++I) {
// Ignore empty lines and lines starting with "#"
if (I->empty() || I->startswith("#"))
continue;
// Get our prefix and unparsed regexp.
std::pair<StringRef, StringRef> SplitLine = I->split(":");
StringRef Prefix = SplitLine.first;
std::string Regexp = SplitLine.second;
if (Regexp.empty()) {
// Missing ':' in the line.
report_fatal_error("malformed blacklist line: " + SplitLine.first);
}
// Replace * with .*
for (size_t pos = 0; (pos = Regexp.find("*", pos)) != std::string::npos;
pos += strlen(".*")) {
Regexp.replace(pos, strlen("*"), ".*");
}
// Check that the regexp is valid.
Regex CheckRE(Regexp);
std::string Error;
if (!CheckRE.isValid(Error)) {
report_fatal_error("malformed blacklist regex: " + SplitLine.second +
": " + Error);
}
// Add this regexp into the proper group by its prefix.
if (!Regexps[Prefix].empty())
Regexps[Prefix] += "|";
Regexps[Prefix] += Regexp;
}
// Iterate through each of the prefixes, and create Regexs for them.
for (StringMap<std::string>::iterator I = Regexps.begin(), E = Regexps.end();
I != E; ++I) {
Entries[I->getKey()] = new Regex(I->getValue());
}
}
bool SpecialCaseList::parse(const MemoryBuffer *MB, std::string &Error) {
// Iterate through each line in the blacklist file.
SmallVector<StringRef, 16> Lines;
SplitString(MB->getBuffer(), Lines, "\n\r");
int LineNo = 1;
for (auto I = Lines.begin(), E = Lines.end(); I != E; ++I, ++LineNo) {
// Ignore empty lines and lines starting with "#"
if (I->empty() || I->startswith("#"))
continue;
// Get our prefix and unparsed regexp.
std::pair<StringRef, StringRef> SplitLine = I->split(":");
StringRef Prefix = SplitLine.first;
if (SplitLine.second.empty()) {
// Missing ':' in the line.
Error = (Twine("malformed line ") + Twine(LineNo) + ": '" +
SplitLine.first + "'").str();
return false;
}
std::pair<StringRef, StringRef> SplitRegexp = SplitLine.second.split("=");
std::string Regexp = SplitRegexp.first;
StringRef Category = SplitRegexp.second;
// See if we can store Regexp in Strings.
auto &Entry = Entries[Prefix][Category];
if (Regex::isLiteralERE(Regexp)) {
Entry.Strings.insert(Regexp);
continue;
}
Entry.Trigrams.insert(Regexp);
// Replace * with .*
for (size_t pos = 0; (pos = Regexp.find('*', pos)) != std::string::npos;
pos += strlen(".*")) {
Regexp.replace(pos, strlen("*"), ".*");
}
// Check that the regexp is valid.
Regex CheckRE(Regexp);
std::string REError;
if (!CheckRE.isValid(REError)) {
Error = (Twine("malformed regex in line ") + Twine(LineNo) + ": '" +
SplitLine.second + "': " + REError).str();
return false;
}
// Add this regexp into the proper group by its prefix.
if (!Regexps[Prefix][Category].empty())
Regexps[Prefix][Category] += "|";
Regexps[Prefix][Category] += "^" + Regexp + "$";
}
return true;
}
bool SpecialCaseList::Matcher::insert(std::string Regexp,
std::string &REError) {
if (Regex::isLiteralERE(Regexp)) {
Strings.insert(Regexp);
return true;
}
Trigrams.insert(Regexp);
// Replace * with .*
for (size_t pos = 0; (pos = Regexp.find('*', pos)) != std::string::npos;
pos += strlen(".*")) {
Regexp.replace(pos, strlen("*"), ".*");
}
// Check that the regexp is valid.
Regex CheckRE(Regexp);
if (!CheckRE.isValid(REError))
return false;
if (!UncompiledRegEx.empty())
UncompiledRegEx += "|";
UncompiledRegEx += "^(" + Regexp + ")$";
return true;
}
bool SpecialCaseList::parse(const MemoryBuffer *MB, std::string &Error) {
// Iterate through each line in the blacklist file.
SmallVector<StringRef, 16> Lines;
SplitString(MB->getBuffer(), Lines, "\n\r");
StringMap<StringMap<std::string> > Regexps;
assert(Entries.empty() &&
"parse() should be called on an empty SpecialCaseList");
int LineNo = 1;
for (SmallVectorImpl<StringRef>::iterator I = Lines.begin(), E = Lines.end();
I != E; ++I, ++LineNo) {
// Ignore empty lines and lines starting with "#"
if (I->empty() || I->startswith("#"))
continue;
// Get our prefix and unparsed regexp.
std::pair<StringRef, StringRef> SplitLine = I->split(":");
StringRef Prefix = SplitLine.first;
if (SplitLine.second.empty()) {
// Missing ':' in the line.
Error = (Twine("Malformed line ") + Twine(LineNo) + ": '" +
SplitLine.first + "'").str();
return false;
}
std::pair<StringRef, StringRef> SplitRegexp = SplitLine.second.split("=");
std::string Regexp = SplitRegexp.first;
StringRef Category = SplitRegexp.second;
// Backwards compatibility.
if (Prefix == "global-init") {
Prefix = "global";
Category = "init";
} else if (Prefix == "global-init-type") {
Prefix = "type";
Category = "init";
} else if (Prefix == "global-init-src") {
Prefix = "src";
Category = "init";
}
// See if we can store Regexp in Strings.
if (Regex::isLiteralERE(Regexp)) {
Entries[Prefix][Category].Strings.insert(Regexp);
continue;
}
// Replace * with .*
for (size_t pos = 0; (pos = Regexp.find("*", pos)) != std::string::npos;
pos += strlen(".*")) {
Regexp.replace(pos, strlen("*"), ".*");
}
// Check that the regexp is valid.
Regex CheckRE(Regexp);
std::string REError;
if (!CheckRE.isValid(REError)) {
Error = (Twine("Malformed regex in line ") + Twine(LineNo) + ": '" +
SplitLine.second + "': " + REError).str();
return false;
}
// Add this regexp into the proper group by its prefix.
if (!Regexps[Prefix][Category].empty())
Regexps[Prefix][Category] += "|";
Regexps[Prefix][Category] += "^" + Regexp + "$";
}
// Iterate through each of the prefixes, and create Regexs for them.
for (StringMap<StringMap<std::string> >::const_iterator I = Regexps.begin(),
E = Regexps.end();
I != E; ++I) {
for (StringMap<std::string>::const_iterator II = I->second.begin(),
IE = I->second.end();
II != IE; ++II) {
Entries[I->getKey()][II->getKey()].RegEx = new Regex(II->getValue());
}
}
return true;
}
bool SpecialCaseList::parse(const MemoryBuffer *MB,
StringMap<size_t> &SectionsMap,
std::string &Error) {
// Iterate through each line in the blacklist file.
SmallVector<StringRef, 16> Lines;
MB->getBuffer().split(Lines, '\n');
unsigned LineNo = 1;
StringRef Section = "*";
for (auto I = Lines.begin(), E = Lines.end(); I != E; ++I, ++LineNo) {
*I = I->trim();
// Ignore empty lines and lines starting with "#"
if (I->empty() || I->startswith("#"))
continue;
// Save section names
if (I->startswith("[")) {
if (!I->endswith("]")) {
Error = (Twine("malformed section header on line ") + Twine(LineNo) +
": " + *I).str();
return false;
}
Section = I->slice(1, I->size() - 1);
std::string REError;
Regex CheckRE(Section);
if (!CheckRE.isValid(REError)) {
Error =
(Twine("malformed regex for section ") + Section + ": '" + REError)
.str();
return false;
}
continue;
}
// Get our prefix and unparsed regexp.
std::pair<StringRef, StringRef> SplitLine = I->split(":");
StringRef Prefix = SplitLine.first;
if (SplitLine.second.empty()) {
// Missing ':' in the line.
Error = (Twine("malformed line ") + Twine(LineNo) + ": '" +
SplitLine.first + "'").str();
return false;
}
std::pair<StringRef, StringRef> SplitRegexp = SplitLine.second.split("=");
std::string Regexp = SplitRegexp.first;
StringRef Category = SplitRegexp.second;
// Create this section if it has not been seen before.
if (SectionsMap.find(Section) == SectionsMap.end()) {
std::unique_ptr<Matcher> M = make_unique<Matcher>();
std::string REError;
if (!M->insert(Section, LineNo, REError)) {
Error = (Twine("malformed section ") + Section + ": '" + REError).str();
return false;
}
SectionsMap[Section] = Sections.size();
Sections.emplace_back(std::move(M));
}
auto &Entry = Sections[SectionsMap[Section]].Entries[Prefix][Category];
std::string REError;
if (!Entry.insert(std::move(Regexp), LineNo, REError)) {
Error = (Twine("malformed regex in line ") + Twine(LineNo) + ": '" +
SplitLine.second + "': " + REError).str();
return false;
}
}
return true;
}
