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