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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR LGPL-3.0
#pragma once
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qstringlist.h>
#include <QtCore/qhash.h>
namespace Utils {
namespace Internal {
struct MimeGlobMatchResult
{
void addMatch(const QString &mimeType, int weight, const QString &pattern);
QStringList m_matchingMimeTypes;
int m_weight = 0;
int m_matchingPatternLength = 0;
QString m_foundSuffix;
};
class MimeGlobPattern
{
public:
static const unsigned MaxWeight = 100;
static const unsigned DefaultWeight = 50;
static const unsigned MinWeight = 1;
explicit MimeGlobPattern(const QString &thePattern, const QString &theMimeType,
unsigned theWeight = DefaultWeight,
Qt::CaseSensitivity s = Qt::CaseInsensitive) :
m_pattern(s == Qt::CaseInsensitive ? thePattern.toLower() : thePattern),
m_mimeType(theMimeType),
m_weight(theWeight),
m_caseSensitivity(s),
m_patternType(detectPatternType(m_pattern))
{
}
void swap(MimeGlobPattern &other) noexcept
{
qSwap(m_pattern, other.m_pattern);
qSwap(m_mimeType, other.m_mimeType);
qSwap(m_weight, other.m_weight);
qSwap(m_caseSensitivity, other.m_caseSensitivity);
qSwap(m_patternType, other.m_patternType);
}
bool matchFileName(const QString &inputFileName) const;
inline const QString &pattern() const { return m_pattern; }
inline unsigned weight() const { return m_weight; }
inline const QString &mimeType() const { return m_mimeType; }
inline bool isCaseSensitive() const { return m_caseSensitivity == Qt::CaseSensitive; }
private:
enum PatternType {
SuffixPattern,
PrefixPattern,
LiteralPattern,
VdrPattern, // special handling for "[0-9][0-9][0-9].vdr" pattern
AnimPattern, // special handling for "*.anim[1-9j]" pattern
OtherPattern
};
PatternType detectPatternType(const QString &pattern) const;
QString m_pattern;
QString m_mimeType;
int m_weight;
Qt::CaseSensitivity m_caseSensitivity;
PatternType m_patternType;
};
class MimeGlobPatternList : public QList<MimeGlobPattern>
{
public:
bool hasPattern(const QString &mimeType, const QString &pattern) const
{
const_iterator it = begin();
const const_iterator myend = end();
for (; it != myend; ++it)
if ((*it).pattern() == pattern && (*it).mimeType() == mimeType)
return true;
return false;
}
/*!
"noglobs" is very rare occurrence, so it's ok if it's slow
*/
void removeMimeType(const QString &mimeType)
{
auto isMimeTypeEqual = [&mimeType](const MimeGlobPattern &pattern) {
return pattern.mimeType() == mimeType;
};
erase(std::remove_if(begin(), end(), isMimeTypeEqual), end());
}
void match(MimeGlobMatchResult &result, const QString &fileName) const;
};
/*!
Result of the globs parsing, as data structures ready for efficient MIME type matching.
This contains:
1) a map of fast regular patterns (e.g. *.txt is stored as "txt" in a qhash's key)
2) a linear list of high-weight globs
3) a linear list of low-weight globs
*/
class MimeAllGlobPatterns
{
public:
typedef QHash<QString, QStringList> PatternsMap; // MIME type -> patterns
void addGlob(const MimeGlobPattern &glob);
void removeMimeType(const QString &mimeType);
QStringList matchingGlobs(const QString &fileName, QString *foundSuffix) const;
void clear();
PatternsMap m_fastPatterns; // example: "doc" -> "application/msword", "text/plain"
MimeGlobPatternList m_highWeightGlobs;
MimeGlobPatternList m_lowWeightGlobs; // <= 50, including the non-fast 50 patterns
};
} // Internal
} // Utils
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