/* vim:set ts=2 sw=2 et cindent: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ /** * This header provides wrapper classes around the frozen string API * which are roughly equivalent to the internal string classes. */ #ifdef MOZILLA_INTERNAL_API #error nsStringAPI.h is only usable from non-MOZILLA_INTERNAL_API code! #endif #ifndef nsStringAPI_h__ #define nsStringAPI_h__ #include "mozilla/Attributes.h" #include "nsXPCOMStrings.h" #include "nsISupportsImpl.h" #include "prlog.h" #include "nsTArray.h" /** * Comparison function for use with nsACString::Equals */ NS_HIDDEN_(int32_t) CaseInsensitiveCompare(const char *a, const char *b, uint32_t length); class nsAString { public: typedef PRUnichar char_type; typedef nsAString self_type; typedef uint32_t size_type; typedef uint32_t index_type; /** * Returns the length, beginning, and end of a string in one operation. */ NS_HIDDEN_(uint32_t) BeginReading(const char_type **begin, const char_type **end = nullptr) const; NS_HIDDEN_(const char_type*) BeginReading() const; NS_HIDDEN_(const char_type*) EndReading() const; NS_HIDDEN_(char_type) CharAt(uint32_t aPos) const { NS_ASSERTION(aPos < Length(), "Out of bounds"); return BeginReading()[aPos]; } NS_HIDDEN_(char_type) operator [](uint32_t aPos) const { return CharAt(aPos); } NS_HIDDEN_(char_type) First() const { return CharAt(0); } NS_HIDDEN_(char_type) Last() const { const char_type* data; uint32_t dataLen = NS_StringGetData(*this, &data); return data[dataLen - 1]; } /** * Get the length, begin writing, and optionally set the length of a * string all in one operation. * * @param newSize Size the string to this length. Pass PR_UINT32_MAX * to leave the length unchanged. * @return The new length of the string, or 0 if resizing failed. */ NS_HIDDEN_(uint32_t) BeginWriting(char_type **begin, char_type **end = nullptr, uint32_t newSize = PR_UINT32_MAX); NS_HIDDEN_(char_type*) BeginWriting(uint32_t = PR_UINT32_MAX); NS_HIDDEN_(char_type*) EndWriting(); NS_HIDDEN_(bool) SetLength(uint32_t aLen); NS_HIDDEN_(size_type) Length() const { const char_type* data; return NS_StringGetData(*this, &data); } NS_HIDDEN_(bool) IsEmpty() const { return Length() == 0; } NS_HIDDEN_(void) SetIsVoid(bool val) { NS_StringSetIsVoid(*this, val); } NS_HIDDEN_(bool) IsVoid() const { return NS_StringGetIsVoid(*this); } NS_HIDDEN_(void) Assign(const self_type& aString) { NS_StringCopy(*this, aString); } NS_HIDDEN_(void) Assign(const char_type* aData, size_type aLength = PR_UINT32_MAX) { NS_StringSetData(*this, aData, aLength); } NS_HIDDEN_(void) Assign(char_type aChar) { NS_StringSetData(*this, &aChar, 1); } NS_HIDDEN_(void) AssignLiteral(const char *aStr); NS_HIDDEN_(void) AssignASCII(const char *aStr) { AssignLiteral(aStr); } NS_HIDDEN_(self_type&) operator=(const self_type& aString) { Assign(aString); return *this; } NS_HIDDEN_(self_type&) operator=(const char_type* aPtr) { Assign(aPtr); return *this; } NS_HIDDEN_(self_type&) operator=(char_type aChar) { Assign(aChar); return *this; } NS_HIDDEN_(void) Replace( index_type cutStart, size_type cutLength, const char_type* data, size_type length = size_type(-1) ) { NS_StringSetDataRange(*this, cutStart, cutLength, data, length); } NS_HIDDEN_(void) Replace( index_type cutStart, size_type cutLength, char_type c ) { Replace(cutStart, cutLength, &c, 1); } NS_HIDDEN_(void) Replace( index_type cutStart, size_type cutLength, const self_type& readable ) { const char_type* data; uint32_t dataLen = NS_StringGetData(readable, &data); NS_StringSetDataRange(*this, cutStart, cutLength, data, dataLen); } NS_HIDDEN_(void) SetCharAt( char_type c, index_type pos ) { Replace(pos, 1, &c, 1); } NS_HIDDEN_(void) Append( char_type c ) { Replace(size_type(-1), 0, c); } NS_HIDDEN_(void) Append( const char_type* data, size_type length = size_type(-1) ) { Replace(size_type(-1), 0, data, length); } NS_HIDDEN_(void) Append( const self_type& readable ) { Replace(size_type(-1), 0, readable); } NS_HIDDEN_(void) AppendLiteral( const char *aASCIIStr ); NS_HIDDEN_(void) AppendASCII( const char *aASCIIStr ) { AppendLiteral(aASCIIStr); } NS_HIDDEN_(self_type&) operator+=( char_type c ) { Append(c); return *this; } NS_HIDDEN_(self_type&) operator+=( const char_type* data ) { Append(data); return *this; } NS_HIDDEN_(self_type&) operator+=( const self_type& readable ) { Append(readable); return *this; } NS_HIDDEN_(void) Insert( char_type c, index_type pos ) { Replace(pos, 0, c); } NS_HIDDEN_(void) Insert( const char_type* data, index_type pos, size_type length = size_type(-1) ) { Replace(pos, 0, data, length); } NS_HIDDEN_(void) Insert( const self_type& readable, index_type pos ) { Replace(pos, 0, readable); } NS_HIDDEN_(void) Cut( index_type cutStart, size_type cutLength ) { Replace(cutStart, cutLength, nullptr, 0); } NS_HIDDEN_(void) Truncate() { SetLength(0); } /** * Remove all occurences of characters in aSet from the string. */ NS_HIDDEN_(void) StripChars(const char *aSet); /** * Strip whitespace characters from the string. */ NS_HIDDEN_(void) StripWhitespace() { StripChars("\b\t\r\n "); } NS_HIDDEN_(void) Trim(const char *aSet, bool aLeading = true, bool aTrailing = true); /** * Compare strings of characters. Return 0 if the characters are equal, */ typedef int32_t (*ComparatorFunc)(const char_type *a, const char_type *b, uint32_t length); static NS_HIDDEN_(int32_t) DefaultComparator(const char_type *a, const char_type *b, uint32_t length); NS_HIDDEN_(int32_t) Compare( const char_type *other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(int32_t) Compare( const self_type &other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(bool) Equals( const char_type *other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(bool) Equals( const self_type &other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(bool) operator < (const self_type &other) const { return Compare(other) < 0; } NS_HIDDEN_(bool) operator < (const char_type *other) const { return Compare(other) < 0; } NS_HIDDEN_(bool) operator <= (const self_type &other) const { return Compare(other) <= 0; } NS_HIDDEN_(bool) operator <= (const char_type *other) const { return Compare(other) <= 0; } NS_HIDDEN_(bool) operator == (const self_type &other) const { return Equals(other); } NS_HIDDEN_(bool) operator == (const char_type *other) const { return Equals(other); } NS_HIDDEN_(bool) operator >= (const self_type &other) const { return Compare(other) >= 0; } NS_HIDDEN_(bool) operator >= (const char_type *other) const { return Compare(other) >= 0; } NS_HIDDEN_(bool) operator > (const self_type &other) const { return Compare(other) > 0; } NS_HIDDEN_(bool) operator > (const char_type *other) const { return Compare(other) > 0; } NS_HIDDEN_(bool) operator != (const self_type &other) const { return !Equals(other); } NS_HIDDEN_(bool) operator != (const char_type *other) const { return !Equals(other); } NS_HIDDEN_(bool) EqualsLiteral(const char *aASCIIString) const; NS_HIDDEN_(bool) EqualsASCII(const char *aASCIIString) const { return EqualsLiteral(aASCIIString); } /** * Case-insensitive match this string to a lowercase ASCII string. */ NS_HIDDEN_(bool) LowerCaseEqualsLiteral(const char *aASCIIString) const; /** * Find the first occurrence of aStr in this string. * * @return the offset of aStr, or -1 if not found */ NS_HIDDEN_(int32_t) Find(const self_type& aStr, ComparatorFunc c = DefaultComparator) const { return Find(aStr, 0, c); } /** * Find the first occurrence of aStr in this string, beginning at aOffset. * * @return the offset of aStr, or -1 if not found */ NS_HIDDEN_(int32_t) Find(const self_type& aStr, uint32_t aOffset, ComparatorFunc c = DefaultComparator) const; /** * Find an ASCII string within this string. * * @return the offset of aStr, or -1 if not found. */ NS_HIDDEN_(int32_t) Find(const char *aStr, bool aIgnoreCase = false) const { return Find(aStr, 0, aIgnoreCase); } NS_HIDDEN_(int32_t) Find(const char *aStr, uint32_t aOffset, bool aIgnoreCase = false) const; /** * Find the last occurrence of aStr in this string. * * @return The offset of aStr from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const self_type& aStr, ComparatorFunc c = DefaultComparator) const { return RFind(aStr, -1, c); } /** * Find the last occurrence of aStr in this string, beginning at aOffset. * * @param aOffset the offset from the beginning of the string to begin * searching. If aOffset < 0, search from end of this string. * @return The offset of aStr from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const self_type& aStr, int32_t aOffset, ComparatorFunc c = DefaultComparator) const; /** * Find the last occurrence of an ASCII string within this string. * * @return The offset of aStr from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const char *aStr, bool aIgnoreCase = false) const { return RFind(aStr, -1, aIgnoreCase); } /** * Find the last occurrence of an ASCII string beginning at aOffset. * * @param aOffset the offset from the beginning of the string to begin * searching. If aOffset < 0, search from end of this string. * @return The offset of aStr from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const char *aStr, int32_t aOffset, bool aIgnoreCase) const; /** * Search for the offset of the first occurrence of a character in a * string. * * @param aOffset the offset from the beginning of the string to begin * searching * @return The offset of the character from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) FindChar(char_type aChar, uint32_t aOffset = 0) const; /** * Search for the offset of the last occurrence of a character in a * string. * * @return The offset of the character from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFindChar(char_type aChar) const; /** * Append a string representation of a number. */ NS_HIDDEN_(void) AppendInt(int aInt, int32_t aRadix = 10); #ifndef XPCOM_GLUE_AVOID_NSPR /** * Convert this string to an integer. * * @param aErrorCode pointer to contain result code. * @param aRadix must be 10 or 16 */ NS_HIDDEN_(int32_t) ToInteger(nsresult* aErrorCode, uint32_t aRadix = 10) const; /** * Convert this string to a 64-bit integer. * * @param aErrorCode pointer to contain result code. * @param aRadix must be 10 or 16 */ NS_HIDDEN_(int64_t) ToInteger64(nsresult* aErrorCode, uint32_t aRadix = 10) const; #endif // XPCOM_GLUE_AVOID_NSPR protected: // Prevent people from allocating a nsAString directly. ~nsAString() {} }; class nsACString { public: typedef char char_type; typedef nsACString self_type; typedef uint32_t size_type; typedef uint32_t index_type; /** * Returns the length, beginning, and end of a string in one operation. */ NS_HIDDEN_(uint32_t) BeginReading(const char_type **begin, const char_type **end = nullptr) const; NS_HIDDEN_(const char_type*) BeginReading() const; NS_HIDDEN_(const char_type*) EndReading() const; NS_HIDDEN_(char_type) CharAt(uint32_t aPos) const { NS_ASSERTION(aPos < Length(), "Out of bounds"); return BeginReading()[aPos]; } NS_HIDDEN_(char_type) operator [](uint32_t aPos) const { return CharAt(aPos); } NS_HIDDEN_(char_type) First() const { return CharAt(0); } NS_HIDDEN_(char_type) Last() const { const char_type* data; uint32_t dataLen = NS_CStringGetData(*this, &data); return data[dataLen - 1]; } /** * Get the length, begin writing, and optionally set the length of a * string all in one operation. * * @param newSize Size the string to this length. Pass PR_UINT32_MAX * to leave the length unchanged. * @return The new length of the string, or 0 if resizing failed. */ NS_HIDDEN_(uint32_t) BeginWriting(char_type **begin, char_type **end = nullptr, uint32_t newSize = PR_UINT32_MAX); NS_HIDDEN_(char_type*) BeginWriting(uint32_t aLen = PR_UINT32_MAX); NS_HIDDEN_(char_type*) EndWriting(); NS_HIDDEN_(bool) SetLength(uint32_t aLen); NS_HIDDEN_(size_type) Length() const { const char_type* data; return NS_CStringGetData(*this, &data); } NS_HIDDEN_(bool) IsEmpty() const { return Length() == 0; } NS_HIDDEN_(void) SetIsVoid(bool val) { NS_CStringSetIsVoid(*this, val); } NS_HIDDEN_(bool) IsVoid() const { return NS_CStringGetIsVoid(*this); } NS_HIDDEN_(void) Assign(const self_type& aString) { NS_CStringCopy(*this, aString); } NS_HIDDEN_(void) Assign(const char_type* aData, size_type aLength = PR_UINT32_MAX) { NS_CStringSetData(*this, aData, aLength); } NS_HIDDEN_(void) Assign(char_type aChar) { NS_CStringSetData(*this, &aChar, 1); } NS_HIDDEN_(void) AssignLiteral(const char_type *aData) { Assign(aData); } NS_HIDDEN_(void) AssignASCII(const char_type *aData) { Assign(aData); } NS_HIDDEN_(self_type&) operator=(const self_type& aString) { Assign(aString); return *this; } NS_HIDDEN_(self_type&) operator=(const char_type* aPtr) { Assign(aPtr); return *this; } NS_HIDDEN_(self_type&) operator=(char_type aChar) { Assign(aChar); return *this; } NS_HIDDEN_(void) Replace( index_type cutStart, size_type cutLength, const char_type* data, size_type length = size_type(-1) ) { NS_CStringSetDataRange(*this, cutStart, cutLength, data, length); } NS_HIDDEN_(void) Replace( index_type cutStart, size_type cutLength, char_type c ) { Replace(cutStart, cutLength, &c, 1); } NS_HIDDEN_(void) Replace( index_type cutStart, size_type cutLength, const self_type& readable ) { const char_type* data; uint32_t dataLen = NS_CStringGetData(readable, &data); NS_CStringSetDataRange(*this, cutStart, cutLength, data, dataLen); } NS_HIDDEN_(void) SetCharAt( char_type c, index_type pos ) { Replace(pos, 1, &c, 1); } NS_HIDDEN_(void) Append( char_type c ) { Replace(size_type(-1), 0, c); } NS_HIDDEN_(void) Append( const char_type* data, size_type length = size_type(-1) ) { Replace(size_type(-1), 0, data, length); } NS_HIDDEN_(void) Append( const self_type& readable ) { Replace(size_type(-1), 0, readable); } NS_HIDDEN_(void) AppendLiteral( const char *aASCIIStr ) { Append(aASCIIStr); } NS_HIDDEN_(void) AppendASCII( const char *aASCIIStr ) { Append(aASCIIStr); } NS_HIDDEN_(self_type&) operator+=( char_type c ) { Append(c); return *this; } NS_HIDDEN_(self_type&) operator+=( const char_type* data ) { Append(data); return *this; } NS_HIDDEN_(self_type&) operator+=( const self_type& readable ) { Append(readable); return *this; } NS_HIDDEN_(void) Insert( char_type c, index_type pos ) { Replace(pos, 0, c); } NS_HIDDEN_(void) Insert( const char_type* data, index_type pos, size_type length = size_type(-1) ) { Replace(pos, 0, data, length); } NS_HIDDEN_(void) Insert( const self_type& readable, index_type pos ) { Replace(pos, 0, readable); } NS_HIDDEN_(void) Cut( index_type cutStart, size_type cutLength ) { Replace(cutStart, cutLength, nullptr, 0); } NS_HIDDEN_(void) Truncate() { SetLength(0); } /** * Remove all occurences of characters in aSet from the string. */ NS_HIDDEN_(void) StripChars(const char *aSet); /** * Strip whitespace characters from the string. */ NS_HIDDEN_(void) StripWhitespace() { StripChars("\b\t\r\n "); } NS_HIDDEN_(void) Trim(const char *aSet, bool aLeading = true, bool aTrailing = true); /** * Compare strings of characters. Return 0 if the characters are equal, */ typedef int32_t (*ComparatorFunc)(const char_type *a, const char_type *b, uint32_t length); static NS_HIDDEN_(int32_t) DefaultComparator(const char_type *a, const char_type *b, uint32_t length); NS_HIDDEN_(int32_t) Compare( const char_type *other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(int32_t) Compare( const self_type &other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(bool) Equals( const char_type *other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(bool) Equals( const self_type &other, ComparatorFunc c = DefaultComparator ) const; NS_HIDDEN_(bool) operator < (const self_type &other) const { return Compare(other) < 0; } NS_HIDDEN_(bool) operator < (const char_type *other) const { return Compare(other) < 0; } NS_HIDDEN_(bool) operator <= (const self_type &other) const { return Compare(other) <= 0; } NS_HIDDEN_(bool) operator <= (const char_type *other) const { return Compare(other) <= 0; } NS_HIDDEN_(bool) operator == (const self_type &other) const { return Equals(other); } NS_HIDDEN_(bool) operator == (const char_type *other) const { return Equals(other); } NS_HIDDEN_(bool) operator >= (const self_type &other) const { return Compare(other) >= 0; } NS_HIDDEN_(bool) operator >= (const char_type *other) const { return Compare(other) >= 0; } NS_HIDDEN_(bool) operator > (const self_type &other) const { return Compare(other) > 0; } NS_HIDDEN_(bool) operator > (const char_type *other) const { return Compare(other) > 0; } NS_HIDDEN_(bool) operator != (const self_type &other) const { return !Equals(other); } NS_HIDDEN_(bool) operator != (const char_type *other) const { return !Equals(other); } NS_HIDDEN_(bool) EqualsLiteral( const char_type *other ) const { return Equals(other); } NS_HIDDEN_(bool) EqualsASCII( const char_type *other ) const { return Equals(other); } /** * Case-insensitive match this string to a lowercase ASCII string. */ NS_HIDDEN_(bool) LowerCaseEqualsLiteral(const char *aASCIIString) const { return Equals(aASCIIString, CaseInsensitiveCompare); } /** * Find the first occurrence of aStr in this string. * * @return the offset of aStr, or -1 if not found */ NS_HIDDEN_(int32_t) Find(const self_type& aStr, ComparatorFunc c = DefaultComparator) const { return Find(aStr, 0, c); } /** * Find the first occurrence of aStr in this string, beginning at aOffset. * * @return the offset of aStr, or -1 if not found */ NS_HIDDEN_(int32_t) Find(const self_type& aStr, uint32_t aOffset, ComparatorFunc c = DefaultComparator) const; /** * Find the first occurrence of aStr in this string. * * @return the offset of aStr, or -1 if not found */ NS_HIDDEN_(int32_t) Find(const char_type *aStr, ComparatorFunc c = DefaultComparator) const; NS_HIDDEN_(int32_t) Find(const char_type *aStr, uint32_t aLen, ComparatorFunc c = DefaultComparator) const; /** * Find the last occurrence of aStr in this string. * * @return The offset of the character from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const self_type& aStr, ComparatorFunc c = DefaultComparator) const { return RFind(aStr, -1, c); } /** * Find the last occurrence of aStr in this string, beginning at aOffset. * * @param aOffset the offset from the beginning of the string to begin * searching. If aOffset < 0, search from end of this string. * @return The offset of aStr from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const self_type& aStr, int32_t aOffset, ComparatorFunc c = DefaultComparator) const; /** * Find the last occurrence of aStr in this string. * * @return The offset of aStr from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const char_type *aStr, ComparatorFunc c = DefaultComparator) const; /** * Find the last occurrence of an ASCII string in this string, * beginning at aOffset. * * @param aLen is the length of aStr * @return The offset of aStr from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFind(const char_type *aStr, int32_t aLen, ComparatorFunc c = DefaultComparator) const; /** * Search for the offset of the first occurrence of a character in a * string. * * @param aOffset the offset from the beginning of the string to begin * searching * @return The offset of the character from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) FindChar(char_type aChar, uint32_t aOffset = 0) const; /** * Search for the offset of the last occurrence of a character in a * string. * * @return The offset of the character from the beginning of the string, * or -1 if not found. */ NS_HIDDEN_(int32_t) RFindChar(char_type aChar) const; /** * Append a string representation of a number. */ NS_HIDDEN_(void) AppendInt(int aInt, int32_t aRadix = 10); #ifndef XPCOM_GLUE_AVOID_NSPR /** * Convert this string to an integer. * * @param aErrorCode pointer to contain result code. * @param aRadix must be 10 or 16 */ NS_HIDDEN_(int32_t) ToInteger(nsresult* aErrorCode, uint32_t aRadix = 10) const; /** * Convert this string to a 64-bit integer. * * @param aErrorCode pointer to contain result code. * @param aRadix must be 10 or 16 */ NS_HIDDEN_(int64_t) ToInteger64(nsresult* aErrorCode, uint32_t aRadix = 10) const; #endif // XPCOM_GLUE_AVOID_NSPR protected: // Prevent people from allocating a nsAString directly. ~nsACString() {} }; /* ------------------------------------------------------------------------- */ /** * Below we define nsStringContainer and nsCStringContainer. These classes * have unspecified structure. In most cases, your code should use * nsString/nsCString instead of these classes; if you prefer C-style * programming, then look no further. */ class nsStringContainer : public nsAString, private nsStringContainer_base { }; class nsCStringContainer : public nsACString, private nsStringContainer_base { }; /** * The following classes are C++ helper classes that make the frozen string * API easier to use. */ /** * Rename symbols to avoid conflicting with internal versions. */ #define nsString nsString_external #define nsCString nsCString_external #define nsDependentString nsDependentString_external #define nsDependentCString nsDependentCString_external #define NS_ConvertASCIItoUTF16 NS_ConvertASCIItoUTF16_external #define NS_ConvertUTF8toUTF16 NS_ConvertUTF8toUTF16_external #define NS_ConvertUTF16toUTF8 NS_ConvertUTF16toUTF8_external #define NS_LossyConvertUTF16toASCII NS_LossyConvertUTF16toASCII_external #define nsGetterCopies nsGetterCopies_external #define nsCGetterCopies nsCGetterCopies_external #define nsDependentSubstring nsDependentSubstring_external #define nsDependentCSubstring nsDependentCSubstring_external /** * basic strings */ class nsString : public nsStringContainer { public: typedef nsString self_type; typedef nsAString abstract_string_type; nsString() { NS_StringContainerInit(*this); } nsString(const self_type& aString) { NS_StringContainerInit(*this); NS_StringCopy(*this, aString); } explicit nsString(const abstract_string_type& aReadable) { NS_StringContainerInit(*this); NS_StringCopy(*this, aReadable); } explicit nsString(const char_type* aData, size_type aLength = PR_UINT32_MAX) { NS_StringContainerInit2(*this, aData, aLength, 0); } ~nsString() { NS_StringContainerFinish(*this); } const char_type* get() const { return BeginReading(); } self_type& operator=(const self_type& aString) { Assign(aString); return *this; } self_type& operator=(const abstract_string_type& aReadable) { Assign(aReadable); return *this; } self_type& operator=(const char_type* aPtr) { Assign(aPtr); return *this; } self_type& operator=(char_type aChar) { Assign(aChar); return *this; } void Adopt(const char_type *aData, size_type aLength = PR_UINT32_MAX) { NS_StringContainerFinish(*this); NS_StringContainerInit2(*this, aData, aLength, NS_STRING_CONTAINER_INIT_ADOPT); } protected: nsString(const char_type* aData, size_type aLength, uint32_t aFlags) { NS_StringContainerInit2(*this, aData, aLength, aFlags); } }; class nsCString : public nsCStringContainer { public: typedef nsCString self_type; typedef nsACString abstract_string_type; nsCString() { NS_CStringContainerInit(*this); } nsCString(const self_type& aString) { NS_CStringContainerInit(*this); NS_CStringCopy(*this, aString); } explicit nsCString(const abstract_string_type& aReadable) { NS_CStringContainerInit(*this); NS_CStringCopy(*this, aReadable); } explicit nsCString(const char_type* aData, size_type aLength = PR_UINT32_MAX) { NS_CStringContainerInit(*this); NS_CStringSetData(*this, aData, aLength); } ~nsCString() { NS_CStringContainerFinish(*this); } const char_type* get() const { return BeginReading(); } self_type& operator=(const self_type& aString) { Assign(aString); return *this; } self_type& operator=(const abstract_string_type& aReadable) { Assign(aReadable); return *this; } self_type& operator=(const char_type* aPtr) { Assign(aPtr); return *this; } self_type& operator=(char_type aChar) { Assign(aChar); return *this; } void Adopt(const char_type *aData, size_type aLength = PR_UINT32_MAX) { NS_CStringContainerFinish(*this); NS_CStringContainerInit2(*this, aData, aLength, NS_CSTRING_CONTAINER_INIT_ADOPT); } protected: nsCString(const char_type* aData, size_type aLength, uint32_t aFlags) { NS_CStringContainerInit2(*this, aData, aLength, aFlags); } }; /** * dependent strings */ class nsDependentString : public nsString { public: typedef nsDependentString self_type; nsDependentString() {} explicit nsDependentString(const char_type* aData, size_type aLength = PR_UINT32_MAX) : nsString(aData, aLength, NS_CSTRING_CONTAINER_INIT_DEPEND) {} void Rebind(const char_type* aData, size_type aLength = PR_UINT32_MAX) { NS_StringContainerFinish(*this); NS_StringContainerInit2(*this, aData, aLength, NS_STRING_CONTAINER_INIT_DEPEND); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; class nsDependentCString : public nsCString { public: typedef nsDependentCString self_type; nsDependentCString() {} explicit nsDependentCString(const char_type* aData, size_type aLength = PR_UINT32_MAX) : nsCString(aData, aLength, NS_CSTRING_CONTAINER_INIT_DEPEND) {} void Rebind(const char_type* aData, size_type aLength = PR_UINT32_MAX) { NS_CStringContainerFinish(*this); NS_CStringContainerInit2(*this, aData, aLength, NS_CSTRING_CONTAINER_INIT_DEPEND); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; /** * conversion classes */ inline void CopyUTF16toUTF8(const nsAString& aSource, nsACString& aDest) { NS_UTF16ToCString(aSource, NS_CSTRING_ENCODING_UTF8, aDest); } inline void CopyUTF8toUTF16(const nsACString& aSource, nsAString& aDest) { NS_CStringToUTF16(aSource, NS_CSTRING_ENCODING_UTF8, aDest); } inline void LossyCopyUTF16toASCII(const nsAString& aSource, nsACString& aDest) { NS_UTF16ToCString(aSource, NS_CSTRING_ENCODING_ASCII, aDest); } inline void CopyASCIItoUTF16(const nsACString& aSource, nsAString& aDest) { NS_CStringToUTF16(aSource, NS_CSTRING_ENCODING_ASCII, aDest); } NS_COM_GLUE char* ToNewUTF8String(const nsAString& aSource); class NS_ConvertASCIItoUTF16 : public nsString { public: typedef NS_ConvertASCIItoUTF16 self_type; explicit NS_ConvertASCIItoUTF16(const nsACString& aStr) { NS_CStringToUTF16(aStr, NS_CSTRING_ENCODING_ASCII, *this); } explicit NS_ConvertASCIItoUTF16(const char* aData, uint32_t aLength = PR_UINT32_MAX) { NS_CStringToUTF16(nsDependentCString(aData, aLength), NS_CSTRING_ENCODING_ASCII, *this); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; class NS_ConvertUTF8toUTF16 : public nsString { public: typedef NS_ConvertUTF8toUTF16 self_type; explicit NS_ConvertUTF8toUTF16(const nsACString& aStr) { NS_CStringToUTF16(aStr, NS_CSTRING_ENCODING_UTF8, *this); } explicit NS_ConvertUTF8toUTF16(const char* aData, uint32_t aLength = PR_UINT32_MAX) { NS_CStringToUTF16(nsDependentCString(aData, aLength), NS_CSTRING_ENCODING_UTF8, *this); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; class NS_ConvertUTF16toUTF8 : public nsCString { public: typedef NS_ConvertUTF16toUTF8 self_type; explicit NS_ConvertUTF16toUTF8(const nsAString& aStr) { NS_UTF16ToCString(aStr, NS_CSTRING_ENCODING_UTF8, *this); } explicit NS_ConvertUTF16toUTF8(const PRUnichar* aData, uint32_t aLength = PR_UINT32_MAX) { NS_UTF16ToCString(nsDependentString(aData, aLength), NS_CSTRING_ENCODING_UTF8, *this); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; class NS_LossyConvertUTF16toASCII : public nsCString { public: typedef NS_LossyConvertUTF16toASCII self_type; explicit NS_LossyConvertUTF16toASCII(const nsAString& aStr) { NS_UTF16ToCString(aStr, NS_CSTRING_ENCODING_ASCII, *this); } explicit NS_LossyConvertUTF16toASCII(const PRUnichar* aData, uint32_t aLength = PR_UINT32_MAX) { NS_UTF16ToCString(nsDependentString(aData, aLength), NS_CSTRING_ENCODING_ASCII, *this); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; /** * literal strings * * NOTE: HAVE_CPP_2BYTE_WCHAR_T may be automatically defined for some platforms * in nscore.h. On other platforms, it may be defined in xpcom-config.h. * Under GCC, this define should only be set if compiling with -fshort-wchar. */ #if defined(HAVE_CPP_CHAR16_T) || defined(HAVE_CPP_2BYTE_WCHAR_T) #if defined(HAVE_CPP_CHAR16_T) MOZ_STATIC_ASSERT(sizeof(char16_t) == 2, "size of char16_t must be 2"); #define NS_LL(s) u##s #else MOZ_STATIC_ASSERT(sizeof(wchar_t) == 2, "size of wchar_t must be 2"); #define NS_LL(s) L##s #endif #define NS_MULTILINE_LITERAL_STRING(s) nsDependentString(reinterpret_cast(s), uint32_t((sizeof(s)/2)-1)) #define NS_MULTILINE_LITERAL_STRING_INIT(n,s) n(reinterpret_cast(s), uint32_t((sizeof(s)/2)-1)) #define NS_NAMED_MULTILINE_LITERAL_STRING(n,s) const nsDependentString n(reinterpret_cast(s), uint32_t((sizeof(s)/2)-1)) typedef nsDependentString nsLiteralString; #else #define NS_LL(s) s #define NS_MULTILINE_LITERAL_STRING(s) NS_ConvertASCIItoUTF16(s, uint32_t(sizeof(s)-1)) #define NS_MULTILINE_LITERAL_STRING_INIT(n,s) n(s, uint32_t(sizeof(s)-1)) #define NS_NAMED_MULTILINE_LITERAL_STRING(n,s) const NS_ConvertASCIItoUTF16 n(s, uint32_t(sizeof(s)-1)) typedef NS_ConvertASCIItoUTF16 nsLiteralString; #endif /* Check that PRUnichar is unsigned */ MOZ_STATIC_ASSERT(PRUnichar(-1) > PRUnichar(0), "PRUnichar is by definition an unsigned type"); /* * Macro arguments used in concatenation or stringification won't be expanded. * Therefore, in order for |NS_L(FOO)| to work as expected (which is to expand * |FOO| before doing whatever |NS_L| needs to do to it) a helper macro needs * to be inserted in between to allow the macro argument to expand. * See "3.10.6 Separate Expansion of Macro Arguments" of the CPP manual for a * more accurate and precise explanation. */ #define NS_L(s) NS_LL(s) #define NS_LITERAL_STRING(s) static_cast(NS_MULTILINE_LITERAL_STRING(NS_LL(s))) #define NS_LITERAL_STRING_INIT(n,s) NS_MULTILINE_LITERAL_STRING_INIT(n, NS_LL(s)) #define NS_NAMED_LITERAL_STRING(n,s) NS_NAMED_MULTILINE_LITERAL_STRING(n, NS_LL(s)) #define NS_LITERAL_CSTRING(s) static_cast(nsDependentCString(s, uint32_t(sizeof(s)-1))) #define NS_LITERAL_CSTRING_INIT(n,s) n(s, uint32_t(sizeof(s)-1)) #define NS_NAMED_LITERAL_CSTRING(n,s) const nsDependentCString n(s, uint32_t(sizeof(s)-1)) typedef nsDependentCString nsLiteralCString; /** * getter_Copies support * * NS_IMETHOD GetBlah(PRUnichar**); * * void some_function() * { * nsString blah; * GetBlah(getter_Copies(blah)); * // ... * } */ class nsGetterCopies { public: typedef PRUnichar char_type; nsGetterCopies(nsString& aStr) : mString(aStr), mData(nullptr) {} ~nsGetterCopies() { mString.Adopt(mData); } operator char_type**() { return &mData; } private: nsString& mString; char_type* mData; }; inline nsGetterCopies getter_Copies(nsString& aString) { return nsGetterCopies(aString); } class nsCGetterCopies { public: typedef char char_type; nsCGetterCopies(nsCString& aStr) : mString(aStr), mData(nullptr) {} ~nsCGetterCopies() { mString.Adopt(mData); } operator char_type**() { return &mData; } private: nsCString& mString; char_type* mData; }; inline nsCGetterCopies getter_Copies(nsCString& aString) { return nsCGetterCopies(aString); } /** * substrings */ class NS_COM_GLUE nsDependentSubstring : public nsStringContainer { public: typedef nsDependentSubstring self_type; typedef nsAString abstract_string_type; ~nsDependentSubstring() { NS_StringContainerFinish(*this); } nsDependentSubstring() { NS_StringContainerInit(*this); } nsDependentSubstring(const char_type *aStart, uint32_t aLength) { NS_StringContainerInit2(*this, aStart, aLength, NS_STRING_CONTAINER_INIT_DEPEND | NS_STRING_CONTAINER_INIT_SUBSTRING); } nsDependentSubstring(const abstract_string_type& aStr, uint32_t aStartPos); nsDependentSubstring(const abstract_string_type& aStr, uint32_t aStartPos, uint32_t aLength); void Rebind(const char_type *aStart, uint32_t aLength) { NS_StringContainerFinish(*this); NS_StringContainerInit2(*this, aStart, aLength, NS_STRING_CONTAINER_INIT_DEPEND | NS_STRING_CONTAINER_INIT_SUBSTRING); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; class NS_COM_GLUE nsDependentCSubstring : public nsCStringContainer { public: typedef nsDependentCSubstring self_type; typedef nsACString abstract_string_type; ~nsDependentCSubstring() { NS_CStringContainerFinish(*this); } nsDependentCSubstring() { NS_CStringContainerInit(*this); } nsDependentCSubstring(const char_type *aStart, uint32_t aLength) { NS_CStringContainerInit2(*this, aStart, aLength, NS_CSTRING_CONTAINER_INIT_DEPEND | NS_CSTRING_CONTAINER_INIT_SUBSTRING); } nsDependentCSubstring(const abstract_string_type& aStr, uint32_t aStartPos); nsDependentCSubstring(const abstract_string_type& aStr, uint32_t aStartPos, uint32_t aLength); void Rebind(const char_type *aStart, uint32_t aLength) { NS_CStringContainerFinish(*this); NS_CStringContainerInit2(*this, aStart, aLength, NS_CSTRING_CONTAINER_INIT_DEPEND | NS_CSTRING_CONTAINER_INIT_SUBSTRING); } private: self_type& operator=(const self_type& aString) MOZ_DELETE; }; /** * Various nsDependentC?Substring constructor functions */ // PRUnichar inline const nsDependentSubstring Substring( const nsAString& str, uint32_t startPos ) { return nsDependentSubstring(str, startPos); } inline const nsDependentSubstring Substring( const nsAString& str, uint32_t startPos, uint32_t length ) { return nsDependentSubstring(str, startPos, length); } inline const nsDependentSubstring Substring( const PRUnichar* start, const PRUnichar* end ) { NS_ABORT_IF_FALSE(uint32_t(end - start) == uintptr_t(end - start), "string too long"); return nsDependentSubstring(start, uint32_t(end - start)); } inline const nsDependentSubstring Substring( const PRUnichar* start, uint32_t length ) { return nsDependentSubstring(start, length); } inline const nsDependentSubstring StringHead( const nsAString& str, uint32_t count ) { return nsDependentSubstring(str, 0, count); } inline const nsDependentSubstring StringTail( const nsAString& str, uint32_t count ) { return nsDependentSubstring(str, str.Length() - count, count); } // char inline const nsDependentCSubstring Substring( const nsACString& str, uint32_t startPos ) { return nsDependentCSubstring(str, startPos); } inline const nsDependentCSubstring Substring( const nsACString& str, uint32_t startPos, uint32_t length ) { return nsDependentCSubstring(str, startPos, length); } inline const nsDependentCSubstring Substring( const char* start, const char* end ) { NS_ABORT_IF_FALSE(uint32_t(end - start) == uintptr_t(end - start), "string too long"); return nsDependentCSubstring(start, uint32_t(end - start)); } inline const nsDependentCSubstring Substring( const char* start, uint32_t length ) { return nsDependentCSubstring(start, length); } inline const nsDependentCSubstring StringHead( const nsACString& str, uint32_t count ) { return nsDependentCSubstring(str, 0, count); } inline const nsDependentCSubstring StringTail( const nsACString& str, uint32_t count ) { return nsDependentCSubstring(str, str.Length() - count, count); } inline bool StringBeginsWith(const nsAString& aSource, const nsAString& aSubstring, nsAString::ComparatorFunc aComparator = nsAString::DefaultComparator) { return aSubstring.Length() <= aSource.Length() && StringHead(aSource, aSubstring.Length()).Equals(aSubstring, aComparator); } inline bool StringEndsWith(const nsAString& aSource, const nsAString& aSubstring, nsAString::ComparatorFunc aComparator = nsAString::DefaultComparator) { return aSubstring.Length() <= aSource.Length() && StringTail(aSource, aSubstring.Length()).Equals(aSubstring, aComparator); } inline bool StringBeginsWith(const nsACString& aSource, const nsACString& aSubstring, nsACString::ComparatorFunc aComparator = nsACString::DefaultComparator) { return aSubstring.Length() <= aSource.Length() && StringHead(aSource, aSubstring.Length()).Equals(aSubstring, aComparator); } inline bool StringEndsWith(const nsACString& aSource, const nsACString& aSubstring, nsACString::ComparatorFunc aComparator = nsACString::DefaultComparator) { return aSubstring.Length() <= aSource.Length() && StringTail(aSource, aSubstring.Length()).Equals(aSubstring, aComparator); } /** * Trim whitespace from the beginning and end of a string; then compress * remaining runs of whitespace characters to a single space. */ NS_HIDDEN_(void) CompressWhitespace(nsAString& aString); #define EmptyCString() nsCString() #define EmptyString() nsString() /** * Convert an ASCII string to all upper/lowercase (a-z,A-Z only). As a bonus, * returns the string length. */ NS_HIDDEN_(uint32_t) ToLowerCase(nsACString& aStr); NS_HIDDEN_(uint32_t) ToUpperCase(nsACString& aStr); NS_HIDDEN_(uint32_t) ToLowerCase(const nsACString& aSrc, nsACString& aDest); NS_HIDDEN_(uint32_t) ToUpperCase(const nsACString& aSrc, nsACString& aDest); /** * The following declarations are *deprecated*, and are included here only * to make porting from existing code that doesn't use the frozen string API * easier. They may disappear in the future. */ inline char* ToNewCString(const nsACString& aStr) { return NS_CStringCloneData(aStr); } inline PRUnichar* ToNewUnicode(const nsAString& aStr) { return NS_StringCloneData(aStr); } typedef nsString PromiseFlatString; typedef nsCString PromiseFlatCString; typedef nsCString nsAutoCString; typedef nsString nsAutoString; NS_HIDDEN_(bool) ParseString(const nsACString& aAstring, char aDelimiter, nsTArray& aArray); /* for back compatibility for pre-name-change code */ typedef nsAutoCString nsCAutoString; #endif // nsStringAPI_h__