diff options
Diffstat (limited to 'src/corelib/mimetypes/qmimeglobpattern.cpp')
-rw-r--r-- | src/corelib/mimetypes/qmimeglobpattern.cpp | 108 |
1 files changed, 75 insertions, 33 deletions
diff --git a/src/corelib/mimetypes/qmimeglobpattern.cpp b/src/corelib/mimetypes/qmimeglobpattern.cpp index 1016884437..a81112d227 100644 --- a/src/corelib/mimetypes/qmimeglobpattern.cpp +++ b/src/corelib/mimetypes/qmimeglobpattern.cpp @@ -88,6 +88,40 @@ void QMimeGlobMatchResult::addMatch(const QString &mimeType, int weight, const Q } } +QMimeGlobPattern::PatternType QMimeGlobPattern::detectPatternType(const QString &pattern) const +{ + const int patternLength = pattern.length(); + if (!patternLength) + return OtherPattern; + + const bool starCount = pattern.count(QLatin1Char('*')) == 1; + const bool hasSquareBracket = pattern.indexOf(QLatin1Char('[')) != -1; + const bool hasQuestionMark = pattern.indexOf(QLatin1Char('?')) != -1; + + if (!hasSquareBracket && !hasQuestionMark) { + if (starCount == 1) { + // Patterns like "*~", "*.extension" + if (pattern.at(0) == QLatin1Char('*')) + return SuffixPattern; + // Patterns like "README*" (well this is currently the only one like that...) + if (pattern.at(patternLength - 1) == QLatin1Char('*')) + return PrefixPattern; + } + // Names without any wildcards like "README" + if (starCount == 0) + return LiteralPattern; + } + + if (pattern == QLatin1String("[0-9][0-9][0-9].vdr")) + return VdrPattern; + + if (pattern == QLatin1String("*.anim[1-9j]")) + return AnimPattern; + + return OtherPattern; +} + + /*! \internal \class QMimeGlobPattern @@ -97,58 +131,66 @@ void QMimeGlobMatchResult::addMatch(const QString &mimeType, int weight, const Q \sa QMimeType, QMimeDatabase, QMimeMagicRuleMatcher, QMimeMagicRule */ -bool QMimeGlobPattern::matchFileName(const QString &inputFilename) const +bool QMimeGlobPattern::matchFileName(const QString &inputFileName) const { // "Applications MUST match globs case-insensitively, except when the case-sensitive // attribute is set to true." // The constructor takes care of putting case-insensitive patterns in lowercase. - const QString filename = m_caseSensitivity == Qt::CaseInsensitive ? inputFilename.toLower() : inputFilename; + const QString fileName = m_caseSensitivity == Qt::CaseInsensitive + ? inputFileName.toLower() : inputFileName; - const int pattern_len = m_pattern.length(); - if (!pattern_len) + const int patternLength = m_pattern.length(); + if (!patternLength) return false; - const int len = filename.length(); - - const int starCount = m_pattern.count(QLatin1Char('*')); + const int fileNameLength = fileName.length(); - // Patterns like "*~", "*.extension" - if (m_pattern[0] == QLatin1Char('*') && m_pattern.indexOf(QLatin1Char('[')) == -1 && starCount == 1) - { - if (len + 1 < pattern_len) return false; + switch (m_patternType) { + case SuffixPattern: { + if (fileNameLength + 1 < patternLength) + return false; - const QChar *c1 = m_pattern.unicode() + pattern_len - 1; - const QChar *c2 = filename.unicode() + len - 1; + const QChar *c1 = m_pattern.unicode() + patternLength - 1; + const QChar *c2 = fileName.unicode() + fileNameLength - 1; int cnt = 1; - while (cnt < pattern_len && *c1-- == *c2--) + while (cnt < patternLength && *c1-- == *c2--) ++cnt; - return cnt == pattern_len; + return cnt == patternLength; } - - // Patterns like "README*" (well this is currently the only one like that...) - if (starCount == 1 && m_pattern.at(pattern_len - 1) == QLatin1Char('*')) { - if (len + 1 < pattern_len) return false; - if (m_pattern.at(0) == QLatin1Char('*')) - return filename.indexOf(m_pattern.midRef(1, pattern_len - 2)) != -1; + case PrefixPattern: { + if (fileNameLength + 1 < patternLength) + return false; const QChar *c1 = m_pattern.unicode(); - const QChar *c2 = filename.unicode(); + const QChar *c2 = fileName.unicode(); int cnt = 1; - while (cnt < pattern_len && *c1++ == *c2++) + while (cnt < patternLength && *c1++ == *c2++) ++cnt; - return cnt == pattern_len; + return cnt == patternLength; } - - // Names without any wildcards like "README" - if (m_pattern.indexOf(QLatin1Char('[')) == -1 && starCount == 0 && m_pattern.indexOf(QLatin1Char('?'))) - return (m_pattern == filename); - - // Other (quite rare) patterns, like "*.anim[1-9j]": use slow but correct method + case LiteralPattern: + return (m_pattern == fileName); + case VdrPattern: // "[0-9][0-9][0-9].vdr" case + return fileNameLength == 7 + && fileName.at(0).isDigit() && fileName.at(1).isDigit() && fileName.at(2).isDigit() + && QStringView{fileName}.mid(3, 4) == QLatin1String(".vdr"); + case AnimPattern: { // "*.anim[1-9j]" case + if (fileNameLength < 6) + return false; + const QChar lastChar = fileName.at(fileNameLength - 1); + const bool lastCharOK = (lastChar.isDigit() && lastChar != QLatin1Char('0')) + || lastChar == QLatin1Char('j'); + return lastCharOK && QStringView{fileName}.mid(fileNameLength - 6, 5) == QLatin1String(".anim"); + } + case OtherPattern: + // Other fallback patterns: slow but correct method #if QT_CONFIG(regularexpression) - QRegularExpression rx(QRegularExpression::wildcardToRegularExpression(m_pattern)); - return rx.match(filename).hasMatch(); + QRegularExpression rx(QRegularExpression::wildcardToRegularExpression(m_pattern)); + return rx.match(fileName).hasMatch(); #else - return false; + return false; #endif + } + return false; } static bool isSimplePattern(const QString &pattern) |