9a2d83e698
Allows the use of UTF-8 for packing resources instead of the default of UTF-16 for Java. When strings are extracted from the ResStringPool, they are converted to UTF-16 and the result is cached for subsequent calls. When using aapt to package, add in the "-8" switch to pack the resources using UTF-8. This will result in the value, key, and type strings as well as the compiled XML string values taking significantly less space in the final application package in most scenarios. Change-Id: I129483f8b3d3b1c5869dced05cb525e494a6c83a
265 lines
8.3 KiB
C++
265 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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