266 lines
8.3 KiB
C++
266 lines
8.3 KiB
C++
/*
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* Copyright (C) 2005 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_STRING16_H
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#define ANDROID_STRING16_H
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#include <utils/Errors.h>
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#include <utils/SharedBuffer.h>
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#include <stdint.h>
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#include <sys/types.h>
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// ---------------------------------------------------------------------------
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extern "C" {
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typedef uint16_t char16_t;
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// Standard string functions on char16 strings.
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int strcmp16(const char16_t *, const char16_t *);
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int strncmp16(const char16_t *s1, const char16_t *s2, size_t n);
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size_t strlen16(const char16_t *);
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size_t strnlen16(const char16_t *, size_t);
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char16_t *strcpy16(char16_t *, const char16_t *);
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char16_t *strncpy16(char16_t *, const char16_t *, size_t);
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// Version of comparison that supports embedded nulls.
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// This is different than strncmp() because we don't stop
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// at a nul character and consider the strings to be different
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// if the lengths are different (thus we need to supply the
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// lengths of both strings). This can also be used when
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// your string is not nul-terminated as it will have the
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// equivalent result as strcmp16 (unlike strncmp16).
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int strzcmp16(const char16_t *s1, size_t n1, const char16_t *s2, size_t n2);
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// Version of strzcmp16 for comparing strings in different endianness.
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int strzcmp16_h_n(const char16_t *s1H, size_t n1, const char16_t *s2N, size_t n2);
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// Convert UTF-8 to UTF-16 including surrogate pairs
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void utf8_to_utf16(const uint8_t *src, size_t srcLen, char16_t* dst, const size_t dstLen);
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}
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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class String8;
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class TextOutput;
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//! This is a string holding UTF-16 characters.
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class String16
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{
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public:
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String16();
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String16(const String16& o);
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String16(const String16& o,
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size_t len,
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size_t begin=0);
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explicit String16(const char16_t* o);
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explicit String16(const char16_t* o, size_t len);
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explicit String16(const String8& o);
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explicit String16(const char* o);
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explicit String16(const char* o, size_t len);
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~String16();
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inline const char16_t* string() const;
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inline size_t size() const;
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inline const SharedBuffer* sharedBuffer() const;
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void setTo(const String16& other);
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status_t setTo(const char16_t* other);
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status_t setTo(const char16_t* other, size_t len);
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status_t setTo(const String16& other,
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size_t len,
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size_t begin=0);
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status_t append(const String16& other);
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status_t append(const char16_t* other, size_t len);
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inline String16& operator=(const String16& other);
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inline String16& operator+=(const String16& other);
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inline String16 operator+(const String16& other) const;
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status_t insert(size_t pos, const char16_t* chrs);
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status_t insert(size_t pos,
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const char16_t* chrs, size_t len);
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ssize_t findFirst(char16_t c) const;
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ssize_t findLast(char16_t c) const;
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bool startsWith(const String16& prefix) const;
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bool startsWith(const char16_t* prefix) const;
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status_t makeLower();
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status_t replaceAll(char16_t replaceThis,
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char16_t withThis);
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status_t remove(size_t len, size_t begin=0);
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inline int compare(const String16& other) const;
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inline bool operator<(const String16& other) const;
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inline bool operator<=(const String16& other) const;
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inline bool operator==(const String16& other) const;
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inline bool operator!=(const String16& other) const;
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inline bool operator>=(const String16& other) const;
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inline bool operator>(const String16& other) const;
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inline bool operator<(const char16_t* other) const;
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inline bool operator<=(const char16_t* other) const;
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inline bool operator==(const char16_t* other) const;
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inline bool operator!=(const char16_t* other) const;
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inline bool operator>=(const char16_t* other) const;
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inline bool operator>(const char16_t* other) const;
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inline operator const char16_t*() const;
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private:
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const char16_t* mString;
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};
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TextOutput& operator<<(TextOutput& to, const String16& val);
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// ---------------------------------------------------------------------------
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// No user servicable parts below.
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inline int compare_type(const String16& lhs, const String16& rhs)
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{
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return lhs.compare(rhs);
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}
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inline int strictly_order_type(const String16& lhs, const String16& rhs)
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{
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return compare_type(lhs, rhs) < 0;
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}
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inline const char16_t* String16::string() const
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{
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return mString;
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}
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inline size_t String16::size() const
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{
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return SharedBuffer::sizeFromData(mString)/sizeof(char16_t)-1;
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}
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inline const SharedBuffer* String16::sharedBuffer() const
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{
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return SharedBuffer::bufferFromData(mString);
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}
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inline String16& String16::operator=(const String16& other)
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{
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setTo(other);
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return *this;
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}
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inline String16& String16::operator+=(const String16& other)
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{
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append(other);
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return *this;
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}
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inline String16 String16::operator+(const String16& other) const
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{
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String16 tmp;
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tmp += other;
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return tmp;
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}
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inline int String16::compare(const String16& other) const
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{
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return strzcmp16(mString, size(), other.mString, other.size());
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}
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inline bool String16::operator<(const String16& other) const
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{
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return strzcmp16(mString, size(), other.mString, other.size()) < 0;
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}
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inline bool String16::operator<=(const String16& other) const
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{
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return strzcmp16(mString, size(), other.mString, other.size()) <= 0;
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}
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inline bool String16::operator==(const String16& other) const
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{
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return strzcmp16(mString, size(), other.mString, other.size()) == 0;
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}
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inline bool String16::operator!=(const String16& other) const
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{
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return strzcmp16(mString, size(), other.mString, other.size()) != 0;
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}
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inline bool String16::operator>=(const String16& other) const
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{
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return strzcmp16(mString, size(), other.mString, other.size()) >= 0;
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}
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inline bool String16::operator>(const String16& other) const
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{
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return strzcmp16(mString, size(), other.mString, other.size()) > 0;
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}
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inline bool String16::operator<(const char16_t* other) const
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{
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return strcmp16(mString, other) < 0;
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}
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inline bool String16::operator<=(const char16_t* other) const
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{
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return strcmp16(mString, other) <= 0;
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}
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inline bool String16::operator==(const char16_t* other) const
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{
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return strcmp16(mString, other) == 0;
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}
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inline bool String16::operator!=(const char16_t* other) const
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{
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return strcmp16(mString, other) != 0;
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}
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inline bool String16::operator>=(const char16_t* other) const
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{
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return strcmp16(mString, other) >= 0;
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}
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inline bool String16::operator>(const char16_t* other) const
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{
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return strcmp16(mString, other) > 0;
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}
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inline String16::operator const char16_t*() const
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{
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return mString;
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}
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}; // namespace android
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// ---------------------------------------------------------------------------
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#endif // ANDROID_STRING16_H
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