webengine/osswebengine/WebCore/platform/StringImpl.h
changeset 0 dd21522fd290
child 15 60c5402cb945
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/platform/StringImpl.h	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,196 @@
+/*
+ * This file is part of the DOM implementation for KDE.
+ *
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2005, 2006 Apple Computer, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef StringImpl_h
+#define StringImpl_h
+
+#include "Shared.h"
+#include <wtf/unicode/Unicode.h>
+#include <kjs/identifier.h>
+#include <wtf/Forward.h>
+#include <wtf/Vector.h>
+#include <limits.h>
+
+#if PLATFORM(CF)
+typedef const struct __CFString * CFStringRef;
+#endif
+
+#ifdef __OBJC__
+@class NSString;
+#endif
+
+namespace WebCore {
+
+class AtomicString;
+class DeprecatedString;
+struct UCharBufferTranslator;
+struct CStringTranslator;
+struct Length;
+
+class StringImpl : public Shared<StringImpl> {
+private:
+    struct WithOneRef { };
+    StringImpl(WithOneRef) : m_length(0), m_data(0), m_hash(0), m_inTable(false) { ref(); }
+    void init(const char*, unsigned len);
+    void init(const UChar*, unsigned len);
+
+protected:
+    StringImpl() : m_length(0), m_data(0), m_hash(0), m_inTable(false), m_hasTerminatingNullCharacter(false) { }
+public:
+    StringImpl(const UChar*, unsigned len);
+    StringImpl(const char*, unsigned len);
+    StringImpl(const char*);
+    StringImpl(const KJS::Identifier&);
+    StringImpl(const KJS::UString&);
+    ~StringImpl();
+
+    static PassRefPtr<StringImpl> createStrippingNull(const UChar*, unsigned len);
+    static StringImpl* newUninitialized(size_t length, UChar*& characterBuffer);
+    static StringImpl* adopt(Vector<UChar>&);
+
+    const UChar* characters() const { return m_data; }
+    unsigned length() const { return m_length; }
+    
+    const UChar* charactersWithNullTermination();
+    
+    unsigned hash() const { if (m_hash == 0) m_hash = computeHash(m_data, m_length); return m_hash; }
+    static unsigned computeHash(const UChar*, unsigned len);
+    static unsigned computeHash(const char*);
+    
+    void append(const UChar*, unsigned length);
+    void append(const StringImpl*);
+    void append(UChar);
+    void append(char);
+
+    void insert(const UChar*, unsigned length, unsigned pos);
+    void insert(const StringImpl*, unsigned pos);
+
+    void truncate(int len);
+    void remove(unsigned pos, int len = 1);
+
+    StringImpl* copy() const { return new StringImpl(m_data, m_length); }
+
+    StringImpl* substring(unsigned pos, unsigned len = UINT_MAX);
+
+    UChar operator[](int pos) const { return m_data[pos]; }
+
+    Length toLength() const;
+
+    bool containsOnlyWhitespace() const;
+    bool containsOnlyWhitespace(unsigned from, unsigned len) const;
+
+    int toInt(bool* ok = 0) const; // ignores trailing garbage, unlike DeprecatedString
+    int64_t toInt64(bool* ok = 0) const; // ignores trailing garbage, unlike DeprecatedString
+    uint64_t toUInt64(bool* ok = 0) const; // ignores trailing garbage, unlike DeprecatedString
+    double toDouble(bool* ok = 0) const;
+    float toFloat(bool* ok = 0) const;
+
+    Length* toCoordsArray(int& len) const;
+    Length* toLengthArray(int& len) const;
+    bool isLower() const;
+    StringImpl* lower() const;
+    StringImpl* upper() const;
+    StringImpl* secure(UChar aChar) const;
+    StringImpl* capitalize(UChar previousCharacter) const;
+    StringImpl* foldCase() const;
+
+    StringImpl* stripWhiteSpace() const;
+    StringImpl* simplifyWhiteSpace() const;
+
+    int find(const char*, int index = 0, bool caseSensitive = true) const;
+    int find(UChar, int index = 0) const;
+    int find(const StringImpl*, int index, bool caseSensitive = true) const;
+
+    int reverseFind(UChar, int index) const;
+    int reverseFind(const StringImpl*, int index, bool caseSensitive = true) const;
+    
+    bool startsWith(const StringImpl* m_data, bool caseSensitive = true) const { return find(m_data, 0, caseSensitive) == 0; }
+    bool endsWith(const StringImpl*, bool caseSensitive = true) const;
+
+    // Does not modify the string.
+    StringImpl* replace(UChar, UChar);
+    StringImpl* replace(UChar, const StringImpl*);
+    StringImpl* replace(const StringImpl*, const StringImpl*);
+    StringImpl* replace(unsigned index, unsigned len, const StringImpl*);
+
+    static StringImpl* empty();
+
+    Vector<char> ascii() const;
+
+    WTF::Unicode::Direction defaultWritingDirection() const;
+
+#if PLATFORM(CF)
+    StringImpl(CFStringRef);
+    CFStringRef createCFString() const;
+#endif
+#ifdef __OBJC__
+    StringImpl(NSString*);
+    operator NSString*() const;
+#endif
+#if PLATFORM(SYMBIAN)
+    StringImpl(const TDesC&);
+    StringImpl(const TDesC8&);
+    TPtrC des() const;
+    StringImpl* secureShowLast(UChar aChar) const;
+#endif
+
+    StringImpl(const DeprecatedString&);
+
+private:
+    unsigned m_length;
+    UChar* m_data;
+
+    friend class AtomicString;
+    friend struct UCharBufferTranslator;
+    friend struct CStringTranslator;
+    
+    mutable unsigned m_hash;
+    bool m_inTable;
+    bool m_hasTerminatingNullCharacter;
+};
+
+bool equal(const StringImpl*, const StringImpl*);
+bool equal(const StringImpl*, const char*);
+inline bool equal(const char* a, const StringImpl* b) { return equal(b, a); }
+
+bool equalIgnoringCase(const StringImpl*, const StringImpl*);
+bool equalIgnoringCase(const StringImpl*, const char*);
+inline bool equalIgnoringCase(const char* a, const StringImpl* b) { return equalIgnoringCase(b, a); }
+
+}
+
+namespace WTF {
+
+    // StrHash is the default hash for StringImpl* and RefPtr<StringImpl>
+    template<typename T> struct DefaultHash;
+    template<typename T> struct StrHash;
+    template<> struct DefaultHash<WebCore::StringImpl*> {
+        typedef StrHash<WebCore::StringImpl*> Hash;
+    };
+    template<> struct DefaultHash<RefPtr<WebCore::StringImpl> > {
+        typedef StrHash<RefPtr<WebCore::StringImpl> > Hash;
+    };
+
+}
+
+#endif