1833 lines
44 KiB
C++
1833 lines
44 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 1999, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*
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* File unistr.cpp
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*
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* Modification History:
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*
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* Date Name Description
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* 09/25/98 stephen Creation.
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* 04/20/99 stephen Overhauled per 4/16 code review.
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* 07/09/99 stephen Renamed {hi,lo},{byte,word} to icu_X for HP/UX
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* 11/18/99 aliu Added handleReplaceBetween() to make inherit from
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* Replaceable.
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*******************************************************************************
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*/
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#include "unicode/utypes.h"
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#include "unicode/putil.h"
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#include "unicode/locid.h"
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#include "cstring.h"
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#include "cmemory.h"
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#include "unicode/ustring.h"
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#include "mutex.h"
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#include "unicode/unistr.h"
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#include "unicode/unicode.h"
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#include "unicode/ucnv.h"
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#include "uhash.h"
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#include "ustr_imp.h"
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#if U_IOSTREAM_SOURCE >= 199711
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#include <iostream>
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using namespace std;
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#elif U_IOSTREAM_SOURCE >= 198506
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#include <iostream.h>
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#endif
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#if 0
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//DEBUGGING
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void
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print(const UnicodeString& s,
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const char *name)
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{
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UChar c;
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cout << name << ":|";
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for(int i = 0; i < s.length(); ++i) {
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c = s[i];
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if(c>= 0x007E || c < 0x0020)
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cout << "[0x" << hex << s[i] << "]";
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else
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cout << (char) s[i];
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}
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cout << '|' << endl;
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}
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void
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print(const UChar *s,
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int32_t len,
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const char *name)
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{
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UChar c;
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cout << name << ":|";
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for(int i = 0; i < len; ++i) {
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c = s[i];
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if(c>= 0x007E || c < 0x0020)
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cout << "[0x" << hex << s[i] << "]";
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else
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cout << (char) s[i];
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}
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cout << '|' << endl;
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}
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// END DEBUGGING
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#endif
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// Local function definitions for now
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// need to copy areas that may overlap
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inline void
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us_arrayCopy(const UChar *src, int32_t srcStart,
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UChar *dst, int32_t dstStart, int32_t count)
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{
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if(count>0) {
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uprv_memmove(dst+dstStart, src+srcStart, (size_t)(count*sizeof(*src)));
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}
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}
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UConverter* UnicodeString::fgDefaultConverter = 0;
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//========================================
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// Constructors
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//========================================
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UnicodeString::UnicodeString()
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: fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{}
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UnicodeString::UnicodeString(int32_t capacity, UChar32 c, int32_t count)
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: fCapacity(US_STACKBUF_SIZE),
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fArray(0),
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fFlags(0)
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{
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if(count <= 0) {
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// just allocate and do not do anything else
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allocate(capacity);
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} else {
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// count > 0, allocate and fill the new string with count c's
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int32_t unitCount = UTF_CHAR_LENGTH(c), length = count * unitCount;
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if(capacity < length) {
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capacity = length;
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}
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if(allocate(capacity)) {
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int32_t i = 0;
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// fill the new string with c
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if(unitCount == 1) {
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// fill with length UChars
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while(i < length) {
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fArray[i++] = (UChar)c;
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}
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} else {
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// get the code units for c
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UChar units[UTF_MAX_CHAR_LENGTH];
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UTF_APPEND_CHAR_UNSAFE(units, i, c);
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// now it must be i==unitCount
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i = 0;
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// for Unicode, unitCount can only be 1, 2, 3, or 4
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// 1 is handled above
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switch(unitCount) {
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case 2:
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while(i < length) {
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fArray[i++]=units[0];
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fArray[i++]=units[1];
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}
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break;
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case 3:
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while(i < length) {
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fArray[i++]=units[0];
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fArray[i++]=units[1];
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fArray[i++]=units[2];
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}
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break;
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case 4:
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while(i < length) {
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fArray[i++]=units[0];
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fArray[i++]=units[1];
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fArray[i++]=units[2];
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fArray[i++]=units[3];
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}
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break;
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default:
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break;
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}
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}
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}
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fLength = length;
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}
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}
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UnicodeString::UnicodeString(UChar ch)
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: Replaceable(1),
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fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{
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fStackBuffer[0] = ch;
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}
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UnicodeString::UnicodeString(UChar32 ch)
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: Replaceable(1),
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fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{
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UTextOffset i = 0;
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UTF_APPEND_CHAR(fStackBuffer, i, US_STACKBUF_SIZE, ch);
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fLength = i;
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}
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UnicodeString::UnicodeString(const UChar *text)
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: fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{
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doReplace(0, 0, text, 0, u_strlen(text));
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}
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UnicodeString::UnicodeString(const UChar *text,
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int32_t textLength)
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: fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{
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doReplace(0, 0, text, 0, textLength);
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}
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UnicodeString::UnicodeString(UBool isTerminated,
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const UChar *text,
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int32_t textLength)
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: Replaceable(textLength),
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fCapacity(isTerminated ? textLength + 1 : textLength),
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fArray((UChar *)text),
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fFlags(kReadonlyAlias)
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{
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if(text == 0 || textLength < -1 || textLength == -1 && !isTerminated) {
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setToBogus();
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} else if(textLength == -1) {
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// text is terminated, or else it would have failed the above test
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fLength = u_strlen(text);
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fCapacity = fLength + 1;
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}
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}
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UnicodeString::UnicodeString(UChar *buff,
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int32_t bufLength,
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int32_t buffCapacity)
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: Replaceable(bufLength),
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fCapacity(buffCapacity),
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fArray(buff),
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fFlags(kWriteableAlias)
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{
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if(buff == 0 || bufLength < 0 || bufLength > buffCapacity) {
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setToBogus();
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}
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}
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UnicodeString::UnicodeString(const char *codepageData,
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const char *codepage)
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: fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{
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if(codepageData != 0) {
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doCodepageCreate(codepageData, uprv_strlen(codepageData), codepage);
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}
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}
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UnicodeString::UnicodeString(const char *codepageData,
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int32_t dataLength,
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const char *codepage)
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: fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{
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if(codepageData != 0) {
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doCodepageCreate(codepageData, dataLength, codepage);
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}
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}
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UnicodeString::UnicodeString(const UnicodeString& that)
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: Replaceable(),
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fCapacity(US_STACKBUF_SIZE),
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fArray(fStackBuffer),
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fFlags(kShortString)
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{
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*this = that;
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}
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//========================================
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// array allocation
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//========================================
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UBool
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UnicodeString::allocate(int32_t capacity) {
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if(capacity <= US_STACKBUF_SIZE) {
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fArray = fStackBuffer;
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fCapacity = US_STACKBUF_SIZE;
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fFlags = kShortString;
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} else {
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// count bytes for the refCounter and the string capacity, and
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// round up to a multiple of 16; then divide by 4 and allocate int32_t's
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// to be safely aligned for the refCount
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int32_t words = ((sizeof(int32_t) + capacity * U_SIZEOF_UCHAR + 15) & ~15) >> 2;
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int32_t *array = new int32_t[words];
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if(array != 0) {
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// set initial refCount and point behind the refCount
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*array++ = 1;
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// have fArray point to the first UChar
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fArray = (UChar *)array;
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fCapacity = (words - 1) * (sizeof(int32_t) / U_SIZEOF_UCHAR);
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fFlags = kLongString;
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} else {
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fLength = 0;
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fCapacity = 0;
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fFlags = kIsBogus;
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return FALSE;
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}
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}
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return TRUE;
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}
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//========================================
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// Destructor
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//========================================
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UnicodeString::~UnicodeString()
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{
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releaseArray();
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}
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//========================================
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// Assignment
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//========================================
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UnicodeString&
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UnicodeString::operator= (const UnicodeString& src)
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{
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// if assigning to ourselves, do nothing
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if(this == 0 || this == &src) {
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return *this;
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}
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// is the right side bogus?
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if(&src == 0 || src.isBogus()) {
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setToBogus();
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return *this;
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}
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// delete the current contents
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releaseArray();
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// we always copy the length and the hash code
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fLength = src.fLength;
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switch(src.fFlags) {
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case kShortString:
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// short string using the stack buffer, do the same
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fArray = fStackBuffer;
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fCapacity = US_STACKBUF_SIZE;
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fFlags = kShortString;
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if(fLength > 0) {
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uprv_memcpy(fStackBuffer, src.fArray, fLength * U_SIZEOF_UCHAR);
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}
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break;
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case kLongString:
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// src uses a refCounted string buffer, use that buffer with refCount
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// src is const, use a cast - we don't really change it
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((UnicodeString &)src).addRef();
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// fall through to readonly alias copying: copy all fields
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case kReadonlyAlias:
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// src is a readonly alias, do the same
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fArray = src.fArray;
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fCapacity = src.fCapacity;
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fFlags = src.fFlags;
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break;
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case kWriteableAlias:
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// src is a writeable alias; we make a copy of that instead
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if(allocate(fLength)) {
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if(fLength > 0) {
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uprv_memcpy(fArray, src.fArray, fLength * U_SIZEOF_UCHAR);
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}
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break;
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}
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// if there is not enough memory, then fall through to setting to bogus
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default:
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// if src is bogus, set ourselves to bogus
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// do not call setToBogus() here because fArray and fFlags are not consistent here
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fArray = 0;
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fLength = 0;
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fCapacity = 0;
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fFlags = kIsBogus;
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break;
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}
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return *this;
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}
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//========================================
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// Miscellaneous operations
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//========================================
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int32_t
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UnicodeString::numDisplayCells( UTextOffset start,
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int32_t length,
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UBool asian) const
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{
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// pin indices to legal values
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pinIndices(start, length);
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UChar32 c;
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int32_t result = 0;
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UTextOffset limit = start + length;
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while(start < limit) {
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UTF_NEXT_CHAR(fArray, start, limit, c);
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switch(Unicode::getCellWidth(c)) {
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case Unicode::ZERO_WIDTH:
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break;
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case Unicode::HALF_WIDTH:
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result += 1;
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break;
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case Unicode::FULL_WIDTH:
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result += 2;
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break;
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case Unicode::NEUTRAL:
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result += (asian ? 2 : 1);
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break;
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}
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}
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return result;
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}
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UCharReference
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UnicodeString::operator[] (UTextOffset pos)
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{
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return UCharReference(this, pos);
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}
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UnicodeString UnicodeString::unescape() const {
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UnicodeString result;
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for (int32_t i=0; i<length(); ) {
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UChar32 c = charAt(i++);
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if (c == 0x005C /*'\\'*/) {
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c = unescapeAt(i); // advances i
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if (c == (UChar32)0xFFFFFFFF) {
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result.remove(); // return empty string
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break; // invalid escape sequence
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}
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}
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result.append(c);
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}
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return result;
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}
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// u_unescapeAt() callback to get a UChar from a UnicodeString
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U_CFUNC UChar _charAt(int32_t offset, void *context) {
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return ((UnicodeString*) context)->charAt(offset);
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}
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UChar32 UnicodeString::unescapeAt(int32_t &offset) const {
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return u_unescapeAt(_charAt, &offset, length(), (void*)this);
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}
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//========================================
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// Read-only implementation
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//========================================
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int8_t
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UnicodeString::doCompare( UTextOffset start,
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int32_t length,
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const UChar *srcChars,
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UTextOffset srcStart,
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int32_t srcLength) const
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{
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// compare illegal string values
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if(isBogus()) {
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if(srcChars==0) {
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return 0;
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} else {
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return -1;
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}
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} else if(srcChars==0) {
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return 1;
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}
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// pin indices to legal values
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pinIndices(start, length);
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// get the correct pointer
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const UChar *chars = getArrayStart();
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// are we comparing the same buffer contents?
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chars += start;
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srcChars += srcStart;
|
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if(chars == srcChars) {
|
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return 0;
|
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}
|
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|
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UTextOffset minLength;
|
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int8_t lengthResult;
|
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|
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// are we comparing different lengths?
|
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if(length != srcLength) {
|
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if(length < srcLength) {
|
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minLength = length;
|
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lengthResult = -1;
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} else {
|
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minLength = srcLength;
|
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lengthResult = 1;
|
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}
|
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} else {
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minLength = length;
|
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lengthResult = 0;
|
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}
|
|
|
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/*
|
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* note that uprv_memcmp() returns an int but we return an int8_t;
|
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* we need to take care not to truncate the result -
|
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* one way to do this is to right-shift the value to
|
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* move the sign bit into the lower 8 bits and making sure that this
|
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* does not become 0 itself
|
|
*/
|
|
|
|
if(minLength > 0) {
|
|
int32_t result;
|
|
|
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# if U_IS_BIG_ENDIAN
|
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// big-endian: byte comparison works
|
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result = uprv_memcmp(chars, srcChars, minLength * sizeof(UChar));
|
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if(result != 0) {
|
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return (int8_t)(result >> 15 | 1);
|
|
}
|
|
# else
|
|
// little-endian: compare UChar units
|
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do {
|
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result = ((int32_t)*(chars++) - (int32_t)*(srcChars++));
|
|
if(result != 0) {
|
|
return (int8_t)(result >> 15 | 1);
|
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}
|
|
} while(--minLength > 0);
|
|
# endif
|
|
}
|
|
return lengthResult;
|
|
}
|
|
|
|
/* String compare in code point order - doCompare() compares in code unit order. */
|
|
int8_t
|
|
UnicodeString::doCompareCodePointOrder(UTextOffset start,
|
|
int32_t length,
|
|
const UChar *srcChars,
|
|
UTextOffset srcStart,
|
|
int32_t srcLength) const
|
|
{
|
|
// compare illegal string values
|
|
if(isBogus()) {
|
|
if(srcChars==0) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
} else if(srcChars==0) {
|
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return 1;
|
|
}
|
|
|
|
// pin indices to legal values
|
|
pinIndices(start, length);
|
|
|
|
// get the correct pointer
|
|
const UChar *chars = getArrayStart();
|
|
|
|
// are we comparing the same buffer contents?
|
|
chars += start;
|
|
srcChars += srcStart;
|
|
if(chars == srcChars) {
|
|
return 0;
|
|
}
|
|
|
|
UTextOffset minLength;
|
|
int8_t lengthResult;
|
|
|
|
// are we comparing different lengths?
|
|
if(length != srcLength) {
|
|
if(length < srcLength) {
|
|
minLength = length;
|
|
lengthResult = -1;
|
|
} else {
|
|
minLength = srcLength;
|
|
lengthResult = 1;
|
|
}
|
|
} else {
|
|
minLength = length;
|
|
lengthResult = 0;
|
|
}
|
|
|
|
static const UChar utf16Fixup[32]={
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0x2000, 0xf800, 0xf800, 0xf800, 0xf800
|
|
};
|
|
UChar c1, c2;
|
|
int32_t diff;
|
|
|
|
/* rotate each code unit's value so that surrogates get the highest values */
|
|
while(minLength>0) {
|
|
c1=*chars;
|
|
c1+=utf16Fixup[c1>>11]; /* additional "fix-up" line */
|
|
c2=*srcChars;
|
|
c2+=utf16Fixup[c2>>11]; /* additional "fix-up" line */
|
|
|
|
/* now c1 and c2 are in UTF-32-compatible order */
|
|
diff=(int32_t)c1-(int32_t)c2;
|
|
if(diff!=0) {
|
|
return (int8_t)(diff >> 15 | 1);
|
|
}
|
|
++chars;
|
|
++srcChars;
|
|
--minLength;
|
|
}
|
|
return lengthResult;
|
|
}
|
|
|
|
int8_t
|
|
UnicodeString::doCaseCompare(UTextOffset start,
|
|
int32_t length,
|
|
const UChar *srcChars,
|
|
UTextOffset srcStart,
|
|
int32_t srcLength,
|
|
uint32_t options) const
|
|
{
|
|
// compare illegal string values
|
|
if(isBogus()) {
|
|
if(srcChars==0) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
} else if(srcChars==0) {
|
|
return 1;
|
|
}
|
|
|
|
// pin indices to legal values
|
|
pinIndices(start, length);
|
|
|
|
// get the correct pointer
|
|
const UChar *chars = getArrayStart();
|
|
|
|
// are we comparing the same buffer contents?
|
|
chars += start;
|
|
srcChars += srcStart;
|
|
if(chars == srcChars) {
|
|
return 0;
|
|
}
|
|
|
|
int32_t result=u_internalStrcasecmp(chars, length, srcChars, srcLength, options);
|
|
if(result!=0) {
|
|
return (int8_t)(result >> 24 | 1);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
UChar
|
|
UnicodeString::getCharAt(UTextOffset offset) const {
|
|
return charAt(offset);
|
|
}
|
|
|
|
UChar32
|
|
UnicodeString::getChar32At(UTextOffset offset) const {
|
|
return char32At(offset);
|
|
}
|
|
|
|
void
|
|
UnicodeString::doExtract(UTextOffset start,
|
|
int32_t length,
|
|
UChar *dst,
|
|
UTextOffset dstStart) const
|
|
{
|
|
// do not copy anything if we alias dst itself
|
|
if(fArray + start != dst + dstStart) {
|
|
// pin indices to legal values
|
|
pinIndices(start, length);
|
|
us_arrayCopy(getArrayStart(), start, dst, dstStart, length);
|
|
}
|
|
}
|
|
|
|
UTextOffset
|
|
UnicodeString::indexOf(const UChar *srcChars,
|
|
UTextOffset srcStart,
|
|
int32_t srcLength,
|
|
UTextOffset start,
|
|
int32_t length) const
|
|
{
|
|
if(isBogus() || srcChars == 0 || srcStart < 0 || srcLength <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
// now we will only work with srcLength-1
|
|
--srcLength;
|
|
|
|
// get the indices within bounds
|
|
pinIndices(start, length);
|
|
|
|
// set length for the last possible match start position
|
|
// note the --srcLength above
|
|
length -= srcLength;
|
|
|
|
if(length <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
const UChar *array = getArrayStart();
|
|
UTextOffset limit = start + length;
|
|
|
|
// search for the first char, then compare the rest of the string
|
|
// increment srcStart here for that, matching the --srcLength above
|
|
UChar ch = srcChars[srcStart++];
|
|
|
|
do {
|
|
if(array[start] == ch && (srcLength == 0 || compare(start + 1, srcLength, srcChars, srcStart, srcLength) == 0)) {
|
|
return start;
|
|
}
|
|
} while(++start < limit);
|
|
|
|
return -1;
|
|
}
|
|
|
|
UTextOffset
|
|
UnicodeString::doIndexOf(UChar c,
|
|
UTextOffset start,
|
|
int32_t length) const
|
|
{
|
|
// pin indices
|
|
pinIndices(start, length);
|
|
if(length == 0) {
|
|
return -1;
|
|
}
|
|
|
|
// find the first occurrence of c
|
|
const UChar *begin = getArrayStart() + start;
|
|
const UChar *limit = begin + length;
|
|
|
|
do {
|
|
if(*begin == c) {
|
|
return begin - getArrayStart();
|
|
}
|
|
} while(++begin < limit);
|
|
|
|
return -1;
|
|
}
|
|
|
|
UTextOffset
|
|
UnicodeString::lastIndexOf(const UChar *srcChars,
|
|
UTextOffset srcStart,
|
|
int32_t srcLength,
|
|
UTextOffset start,
|
|
int32_t length) const
|
|
{
|
|
if(isBogus() || srcChars == 0 || srcStart < 0 || srcLength <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
// now we will only work with srcLength-1
|
|
--srcLength;
|
|
|
|
// get the indices within bounds
|
|
pinIndices(start, length);
|
|
|
|
// set length for the last possible match start position
|
|
// note the --srcLength above
|
|
length -= srcLength;
|
|
|
|
if(length <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
const UChar *array = getArrayStart();
|
|
UTextOffset pos;
|
|
|
|
// search for the first char, then compare the rest of the string
|
|
// increment srcStart here for that, matching the --srcLength above
|
|
UChar ch = srcChars[srcStart++];
|
|
|
|
pos = start + length;
|
|
do {
|
|
if(array[--pos] == ch && (srcLength == 0 || compare(pos + 1, srcLength, srcChars, srcStart, srcLength) == 0)) {
|
|
return pos;
|
|
}
|
|
} while(pos > start);
|
|
|
|
return -1;
|
|
}
|
|
|
|
UTextOffset
|
|
UnicodeString::doLastIndexOf(UChar c,
|
|
UTextOffset start,
|
|
int32_t length) const
|
|
{
|
|
if(isBogus()) {
|
|
return -1;
|
|
}
|
|
|
|
// pin indices
|
|
pinIndices(start, length);
|
|
if(length == 0) {
|
|
return -1;
|
|
}
|
|
|
|
const UChar *begin = getArrayStart() + start;
|
|
const UChar *limit = begin + length;
|
|
|
|
do {
|
|
if(*--limit == c) {
|
|
return limit - getArrayStart();
|
|
}
|
|
} while(limit > begin);
|
|
|
|
return -1;
|
|
}
|
|
|
|
UnicodeString&
|
|
UnicodeString::findAndReplace(UTextOffset start,
|
|
int32_t length,
|
|
const UnicodeString& oldText,
|
|
UTextOffset oldStart,
|
|
int32_t oldLength,
|
|
const UnicodeString& newText,
|
|
UTextOffset newStart,
|
|
int32_t newLength)
|
|
{
|
|
if(isBogus() || oldText.isBogus() || newText.isBogus()) {
|
|
return *this;
|
|
}
|
|
|
|
pinIndices(start, length);
|
|
oldText.pinIndices(oldStart, oldLength);
|
|
newText.pinIndices(newStart, newLength);
|
|
|
|
if(oldLength == 0) {
|
|
return *this;
|
|
}
|
|
|
|
while(length > 0 && length >= oldLength) {
|
|
UTextOffset pos = indexOf(oldText, oldStart, oldLength, start, length);
|
|
if(pos < 0) {
|
|
// no more oldText's here: done
|
|
break;
|
|
} else {
|
|
// we found oldText, replace it by newText and go beyond it
|
|
replace(pos, oldLength, newText, newStart, newLength);
|
|
length -= pos + oldLength - start;
|
|
start = pos + newLength;
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
//========================================
|
|
// Write implementation
|
|
//========================================
|
|
|
|
void
|
|
UnicodeString::setToBogus()
|
|
{
|
|
releaseArray();
|
|
|
|
fArray = 0;
|
|
fCapacity = fLength = 0;
|
|
fFlags = kIsBogus;
|
|
}
|
|
|
|
// setTo() analogous to the readonly-aliasing constructor with the same signature
|
|
UnicodeString &
|
|
UnicodeString::setTo(UBool isTerminated,
|
|
const UChar *text,
|
|
int32_t textLength)
|
|
{
|
|
if(text == 0 || textLength < -1 || textLength == -1 && !isTerminated) {
|
|
setToBogus();
|
|
return *this;
|
|
}
|
|
|
|
releaseArray();
|
|
|
|
fArray = (UChar *)text;
|
|
if(textLength != -1) {
|
|
fLength = textLength;
|
|
} else {
|
|
// text is terminated, or else it would have failed the above test
|
|
fLength = u_strlen(text);
|
|
fCapacity = fLength + 1;
|
|
}
|
|
|
|
fCapacity = isTerminated ? fLength + 1 : fLength;
|
|
fFlags = kReadonlyAlias;
|
|
return *this;
|
|
}
|
|
|
|
// setTo() analogous to the writeable-aliasing constructor with the same signature
|
|
UnicodeString &
|
|
UnicodeString::setTo(UChar *buffer,
|
|
int32_t buffLength,
|
|
int32_t buffCapacity) {
|
|
if(buffer == 0 || buffLength < 0 || buffLength > buffCapacity) {
|
|
setToBogus();
|
|
return *this;
|
|
}
|
|
|
|
releaseArray();
|
|
|
|
fArray = buffer;
|
|
fLength = buffLength;
|
|
fCapacity = buffCapacity;
|
|
fFlags = kWriteableAlias;
|
|
return *this;
|
|
}
|
|
|
|
UnicodeString&
|
|
UnicodeString::setCharAt(UTextOffset offset,
|
|
UChar c)
|
|
{
|
|
if(cloneArrayIfNeeded()) {
|
|
if(offset < 0) {
|
|
offset = 0;
|
|
} else if(offset >= fLength) {
|
|
offset = fLength - 1;
|
|
}
|
|
|
|
fArray[offset] = c;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
/*
|
|
* Implement argument checking and buffer handling
|
|
* for string case mapping as a common function.
|
|
*/
|
|
enum {
|
|
TO_LOWER,
|
|
TO_UPPER,
|
|
FOLD_CASE
|
|
};
|
|
|
|
UnicodeString &
|
|
UnicodeString::toLower() {
|
|
return caseMap(Locale::getDefault(), 0, TO_LOWER);
|
|
}
|
|
|
|
UnicodeString &
|
|
UnicodeString::toLower(const Locale &locale) {
|
|
return caseMap(locale, 0, TO_LOWER);
|
|
}
|
|
|
|
UnicodeString &
|
|
UnicodeString::toUpper() {
|
|
return caseMap(Locale::getDefault(), 0, TO_UPPER);
|
|
}
|
|
|
|
UnicodeString &
|
|
UnicodeString::toUpper(const Locale &locale) {
|
|
return caseMap(locale, 0, TO_UPPER);
|
|
}
|
|
|
|
UnicodeString &
|
|
UnicodeString::foldCase(uint32_t options) {
|
|
return caseMap(Locale(), options, TO_LOWER);
|
|
}
|
|
|
|
// static helper function for string case mapping
|
|
// called by u_internalStrToUpper/Lower()
|
|
UBool U_CALLCONV
|
|
UnicodeString::growBuffer(void *context,
|
|
UChar **buffer, int32_t *pCapacity, int32_t reqCapacity,
|
|
int32_t length) {
|
|
UnicodeString *me = (UnicodeString *)context;
|
|
me->fLength = length;
|
|
if(me->cloneArrayIfNeeded(reqCapacity)) {
|
|
*buffer = me->fArray;
|
|
*pCapacity = me->fCapacity;
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
UnicodeString &
|
|
UnicodeString::caseMap(const Locale& locale,
|
|
uint32_t options,
|
|
int32_t toWhichCase) {
|
|
if(fLength <= 0) {
|
|
// nothing to do
|
|
return *this;
|
|
}
|
|
|
|
// We need to allocate a new buffer for the internal string case mapping function.
|
|
// This is very similar to how doReplace() below keeps the old array pointer
|
|
// and deletes the old array itself after it is done.
|
|
// In addition, we are forcing cloneArrayIfNeeded() to always allocate a new array.
|
|
UChar *oldArray = fArray;
|
|
int32_t oldLength = fLength;
|
|
int32_t *bufferToDelete = 0;
|
|
|
|
// Make sure that if the string is in fStackBuffer we do not overwrite it!
|
|
int32_t capacity;
|
|
if(fLength <= US_STACKBUF_SIZE) {
|
|
if(fArray == fStackBuffer) {
|
|
capacity = 2 * US_STACKBUF_SIZE; // make sure that cloneArrayIfNeeded() allocates a new buffer
|
|
} else {
|
|
capacity = US_STACKBUF_SIZE;
|
|
}
|
|
} else {
|
|
capacity = fLength + 2;
|
|
}
|
|
if(!cloneArrayIfNeeded(capacity, capacity, FALSE, &bufferToDelete, TRUE)) {
|
|
return *this;
|
|
}
|
|
|
|
UErrorCode errorCode = U_ZERO_ERROR;
|
|
if(toWhichCase==TO_LOWER) {
|
|
fLength = u_internalStrToLower(fArray, fCapacity,
|
|
oldArray, oldLength,
|
|
locale.getName(),
|
|
growBuffer, this,
|
|
&errorCode);
|
|
} else if(toWhichCase==TO_UPPER) {
|
|
fLength = u_internalStrToUpper(fArray, fCapacity,
|
|
oldArray, oldLength,
|
|
locale.getName(),
|
|
growBuffer, this,
|
|
&errorCode);
|
|
} else {
|
|
fLength = u_internalStrFoldCase(fArray, fCapacity,
|
|
oldArray, oldLength,
|
|
options,
|
|
growBuffer, this,
|
|
&errorCode);
|
|
}
|
|
|
|
delete [] bufferToDelete;
|
|
if(U_FAILURE(errorCode)) {
|
|
setToBogus();
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
UnicodeString&
|
|
UnicodeString::doReplace( UTextOffset start,
|
|
int32_t length,
|
|
const UnicodeString& src,
|
|
UTextOffset srcStart,
|
|
int32_t srcLength)
|
|
{
|
|
if(!src.isBogus()) {
|
|
// pin the indices to legal values
|
|
src.pinIndices(srcStart, srcLength);
|
|
|
|
// get the characters from src
|
|
// and replace the range in ourselves with them
|
|
return doReplace(start, length, src.getArrayStart(), srcStart, srcLength);
|
|
} else {
|
|
// remove the range
|
|
return doReplace(start, length, 0, 0, 0);
|
|
}
|
|
}
|
|
|
|
UnicodeString&
|
|
UnicodeString::doReplace(UTextOffset start,
|
|
int32_t length,
|
|
const UChar *srcChars,
|
|
UTextOffset srcStart,
|
|
int32_t srcLength)
|
|
{
|
|
// if we're bogus, set us to empty first
|
|
if(isBogus()) {
|
|
fArray = fStackBuffer;
|
|
fLength = 0;
|
|
fCapacity = US_STACKBUF_SIZE;
|
|
fFlags = kShortString;
|
|
}
|
|
|
|
if(srcChars == 0) {
|
|
srcStart = srcLength = 0;
|
|
}
|
|
|
|
int32_t *bufferToDelete = 0;
|
|
|
|
// the following may change fArray but will not copy the current contents;
|
|
// therefore we need to keep the current fArray
|
|
UChar *oldArray = fArray;
|
|
int32_t oldLength = fLength;
|
|
|
|
// pin the indices to legal values
|
|
pinIndices(start, length);
|
|
|
|
// calculate the size of the string after the replace
|
|
int32_t newSize = oldLength - length + srcLength;
|
|
|
|
// clone our array and allocate a bigger array if needed
|
|
if(!cloneArrayIfNeeded(newSize, newSize + (newSize >> 2) + kGrowSize,
|
|
FALSE, &bufferToDelete)
|
|
) {
|
|
return *this;
|
|
}
|
|
|
|
// now do the replace
|
|
|
|
if(fArray != oldArray) {
|
|
// if fArray changed, then we need to copy everything except what will change
|
|
us_arrayCopy(oldArray, 0, fArray, 0, start);
|
|
us_arrayCopy(oldArray, start + length,
|
|
fArray, start + srcLength,
|
|
oldLength - (start + length));
|
|
} else if(length != srcLength) {
|
|
// fArray did not change; copy only the portion that isn't changing, leaving a hole
|
|
us_arrayCopy(oldArray, start + length,
|
|
fArray, start + srcLength,
|
|
oldLength - (start + length));
|
|
}
|
|
|
|
// now fill in the hole with the new string
|
|
us_arrayCopy(srcChars, srcStart, getArrayStart(), start, srcLength);
|
|
|
|
fLength = newSize;
|
|
|
|
// delayed delete in case srcChars == fArray when we started, and
|
|
// to keep oldArray alive for the above operations
|
|
delete [] bufferToDelete;
|
|
|
|
return *this;
|
|
}
|
|
|
|
/**
|
|
* Replaceable API
|
|
*/
|
|
void
|
|
UnicodeString::handleReplaceBetween(UTextOffset start,
|
|
UTextOffset limit,
|
|
const UnicodeString& text) {
|
|
replaceBetween(start, limit, text);
|
|
}
|
|
|
|
/**
|
|
* Replaceable API
|
|
*/
|
|
void
|
|
UnicodeString::copy(int32_t start, int32_t limit, int32_t dest) {
|
|
UChar* text = new UChar[limit - start];
|
|
extractBetween(start, limit, text, 0);
|
|
insert(dest, text, 0, limit - start);
|
|
delete[] text;
|
|
}
|
|
|
|
UnicodeString&
|
|
UnicodeString::doReverse(UTextOffset start,
|
|
int32_t length)
|
|
{
|
|
// if we're bogus, do nothing
|
|
if(isBogus() || !cloneArrayIfNeeded()) {
|
|
return *this;
|
|
}
|
|
|
|
// pin the indices to legal values
|
|
pinIndices(start, length);
|
|
|
|
UChar *left = getArrayStart() + start;
|
|
UChar *right = getArrayStart() + start + length;
|
|
UChar swap;
|
|
|
|
while(left < --right) {
|
|
swap = *left;
|
|
*left++ = *right;
|
|
*right = swap;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
UBool
|
|
UnicodeString::padLeading(int32_t targetLength,
|
|
UChar padChar)
|
|
{
|
|
if(isBogus() || fLength >= targetLength || !cloneArrayIfNeeded(targetLength)) {
|
|
return FALSE;
|
|
} else {
|
|
// move contents up by padding width
|
|
int32_t start = targetLength - fLength;
|
|
us_arrayCopy(fArray, 0, fArray, start, fLength);
|
|
|
|
// fill in padding character
|
|
while(--start >= 0) {
|
|
fArray[start] = padChar;
|
|
}
|
|
fLength = targetLength;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
UBool
|
|
UnicodeString::padTrailing(int32_t targetLength,
|
|
UChar padChar)
|
|
{
|
|
if(isBogus() || fLength >= targetLength || !cloneArrayIfNeeded(targetLength)) {
|
|
return FALSE;
|
|
} else {
|
|
// fill in padding character
|
|
int32_t length = targetLength;
|
|
while(--length >= fLength) {
|
|
fArray[length] = padChar;
|
|
}
|
|
fLength = targetLength;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
UnicodeString&
|
|
UnicodeString::trim()
|
|
{
|
|
if(isBogus()) {
|
|
return *this;
|
|
}
|
|
|
|
UChar32 c;
|
|
UTextOffset i = fLength, length;
|
|
|
|
// first cut off trailing white space
|
|
for(;;) {
|
|
length = i;
|
|
if(i <= 0) {
|
|
break;
|
|
}
|
|
UTF_PREV_CHAR(fArray, 0, i, c);
|
|
if(!(c == 0x20 || Unicode::isWhitespace(c))) {
|
|
break;
|
|
}
|
|
}
|
|
if(length < fLength) {
|
|
fLength = length;
|
|
}
|
|
|
|
// find leading white space
|
|
UTextOffset start;
|
|
i = 0;
|
|
for(;;) {
|
|
start = i;
|
|
if(i >= length) {
|
|
break;
|
|
}
|
|
UTF_NEXT_CHAR(fArray, i, length, c);
|
|
if(!(c == 0x20 || Unicode::isWhitespace(c))) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// move string forward over leading white space
|
|
if(start > 0) {
|
|
doReplace(0, start, 0, 0, 0);
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
//========================================
|
|
// Hashing
|
|
//========================================
|
|
int32_t
|
|
UnicodeString::doHashCode() const
|
|
{
|
|
/* Delegate hash computation to uhash. This makes UnicodeString
|
|
* hashing consistent with UChar* hashing. */
|
|
int32_t hashCode = uhash_hashUCharsN(getArrayStart(), fLength);
|
|
if (hashCode == kInvalidHashCode) {
|
|
hashCode = kEmptyHashCode;
|
|
}
|
|
return hashCode;
|
|
}
|
|
|
|
//========================================
|
|
// Codeset conversion
|
|
//========================================
|
|
int32_t
|
|
UnicodeString::extract(UTextOffset start,
|
|
int32_t length,
|
|
char *target,
|
|
uint32_t dstSize,
|
|
const char *codepage) const
|
|
{
|
|
// if we're bogus or there's nothing to convert, do nothing
|
|
if(isBogus() || length <= 0) {
|
|
return 0;
|
|
}
|
|
|
|
// pin the indices to legal values
|
|
pinIndices(start, length);
|
|
|
|
// create the converter
|
|
UConverter *converter;
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
|
|
// if the codepage is the default, use our cache
|
|
// if it is an empty string, then use the "invariant character" conversion
|
|
if (codepage == 0) {
|
|
converter = getDefaultConverter(status);
|
|
} else if (*codepage == 0) {
|
|
// use the "invariant characters" conversion
|
|
if (length > fLength - start) {
|
|
length = fLength - start;
|
|
}
|
|
if (target != NULL) {
|
|
if (length > dstSize) {
|
|
length = dstSize;
|
|
}
|
|
u_UCharsToChars(getArrayStart() + start, target, length);
|
|
}
|
|
return length;
|
|
} else {
|
|
converter = ucnv_open(codepage, &status);
|
|
}
|
|
|
|
// if we failed, set the appropriate flags and return
|
|
if (U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
|
|
// perform the conversion
|
|
const UChar *mySource = getArrayStart() + start;
|
|
const UChar *mySourceLimit = mySource + length;
|
|
const char *myTargetLimit;
|
|
int32_t size;
|
|
|
|
if (target != NULL) {
|
|
// Pin the limit to U_MAX_PTR if the "magic" dstSize is used.
|
|
if(dstSize == 0xffffffff) {
|
|
myTargetLimit = (char*)U_MAX_PTR(target);
|
|
} else {
|
|
myTargetLimit = target + dstSize;
|
|
}
|
|
|
|
char *myTarget = target;
|
|
ucnv_fromUnicode(converter, &myTarget, myTargetLimit,
|
|
&mySource, mySourceLimit, 0, TRUE, &status);
|
|
size = (int32_t)(myTarget - target);
|
|
} else {
|
|
/* Find out the size of the target needed for the current codepage */
|
|
char targetBuffer[1024];
|
|
size = 0;
|
|
|
|
myTargetLimit = targetBuffer + sizeof(targetBuffer);
|
|
status = U_BUFFER_OVERFLOW_ERROR;
|
|
while (mySource < mySourceLimit && status == U_BUFFER_OVERFLOW_ERROR) {
|
|
target = targetBuffer;
|
|
status = U_ZERO_ERROR;
|
|
ucnv_fromUnicode(converter, &target, myTargetLimit,
|
|
&mySource, mySourceLimit, 0, TRUE, &status);
|
|
size += (int32_t)(target - targetBuffer);
|
|
}
|
|
/* Use the close at the end of the function */
|
|
}
|
|
|
|
// close the converter
|
|
if (codepage == 0) {
|
|
releaseDefaultConverter(converter);
|
|
} else {
|
|
ucnv_close(converter);
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
void
|
|
UnicodeString::doCodepageCreate(const char *codepageData,
|
|
int32_t dataLength,
|
|
const char *codepage)
|
|
{
|
|
// if there's nothing to convert, do nothing
|
|
if(codepageData == 0 || dataLength <= 0) {
|
|
return;
|
|
}
|
|
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
|
|
// create the converter
|
|
// if the codepage is the default, use our cache
|
|
// if it is an empty string, then use the "invariant character" conversion
|
|
UConverter *converter = (codepage == 0 ?
|
|
getDefaultConverter(status) :
|
|
*codepage == 0 ?
|
|
0 :
|
|
ucnv_open(codepage, &status));
|
|
|
|
// if we failed, set the appropriate flags and return
|
|
if(U_FAILURE(status)) {
|
|
setToBogus();
|
|
return;
|
|
}
|
|
|
|
// perform the conversion
|
|
if(converter == 0) {
|
|
// use the "invariant characters" conversion
|
|
if(cloneArrayIfNeeded(dataLength, dataLength, FALSE)) {
|
|
u_charsToUChars(codepageData, getArrayStart(), dataLength);
|
|
fLength = dataLength;
|
|
} else {
|
|
setToBogus();
|
|
}
|
|
return;
|
|
}
|
|
|
|
// set up the conversion parameters
|
|
const char *mySource = codepageData;
|
|
const char *mySourceEnd = mySource + dataLength;
|
|
UChar *myTarget;
|
|
|
|
// estimate the size needed:
|
|
// 1.25 UChar's per source byte should cover most cases
|
|
int32_t arraySize = dataLength + (dataLength >> 2);
|
|
|
|
// we do not care about the current contents
|
|
UBool doCopyArray = FALSE;
|
|
for(;;) {
|
|
if(!cloneArrayIfNeeded(arraySize, arraySize, doCopyArray)) {
|
|
setToBogus();
|
|
break;
|
|
}
|
|
|
|
// perform the conversion
|
|
myTarget = fArray + fLength;
|
|
ucnv_toUnicode(converter, &myTarget, fArray + fCapacity,
|
|
&mySource, mySourceEnd, 0, FALSE, &status);
|
|
|
|
// update the conversion parameters
|
|
fLength = myTarget - fArray;
|
|
|
|
// allocate more space and copy data, if needed
|
|
if(status == U_BUFFER_OVERFLOW_ERROR) {
|
|
// reset the error code
|
|
status = U_ZERO_ERROR;
|
|
|
|
// keep the previous conversion results
|
|
doCopyArray = TRUE;
|
|
|
|
// estimate the new size needed, larger than before
|
|
// try 2 UChar's per remaining source byte
|
|
arraySize = fLength + 2 * (mySourceEnd - mySource);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// close the converter
|
|
if(codepage == 0) {
|
|
releaseDefaultConverter(converter);
|
|
} else {
|
|
ucnv_close(converter);
|
|
}
|
|
}
|
|
|
|
//========================================
|
|
// External Buffer
|
|
//========================================
|
|
// ### TODO:
|
|
// this is very, very dirty: we should not ever expose our array to the outside,
|
|
// and this also violates the const-ness of this object
|
|
// this must be removed when the resource bundle implementation does not need it any more!
|
|
const UChar*
|
|
UnicodeString::getUChars() const {
|
|
// if we're bogus, do nothing
|
|
if(isBogus()) {
|
|
return 0;
|
|
}
|
|
|
|
if(fCapacity <= fLength || fArray[fLength] != 0) {
|
|
if(((UnicodeString &)*this).cloneArrayIfNeeded(fLength + 1)) {
|
|
fArray[fLength] = 0;
|
|
}
|
|
}
|
|
return fArray;
|
|
}
|
|
|
|
//========================================
|
|
// Miscellaneous
|
|
//========================================
|
|
UBool
|
|
UnicodeString::cloneArrayIfNeeded(int32_t newCapacity,
|
|
int32_t growCapacity,
|
|
UBool doCopyArray,
|
|
int32_t **pBufferToDelete,
|
|
UBool forceClone) {
|
|
// default parameters need to be static, therefore
|
|
// the defaults are -1 to have convenience defaults
|
|
if(newCapacity == -1) {
|
|
newCapacity = fCapacity;
|
|
}
|
|
|
|
/*
|
|
* We need to make a copy of the array if
|
|
* the buffer is read-only, or
|
|
* the buffer is refCounted (shared), and refCount>1, or
|
|
* the buffer is too small.
|
|
* Return FALSE if memory could not be allocated.
|
|
*/
|
|
if(forceClone ||
|
|
fFlags & kBufferIsReadonly ||
|
|
fFlags & kRefCounted && refCount() > 1 ||
|
|
newCapacity > fCapacity
|
|
) {
|
|
// save old values
|
|
UChar *array = fArray;
|
|
uint16_t flags = fFlags;
|
|
|
|
// check growCapacity for default value and use of the stack buffer
|
|
if(growCapacity == -1) {
|
|
growCapacity = newCapacity;
|
|
} else if(newCapacity <= US_STACKBUF_SIZE && growCapacity > US_STACKBUF_SIZE) {
|
|
growCapacity = US_STACKBUF_SIZE;
|
|
}
|
|
|
|
// allocate a new array
|
|
if(allocate(growCapacity) ||
|
|
newCapacity < growCapacity && allocate(newCapacity)
|
|
) {
|
|
if(doCopyArray) {
|
|
// copy the contents
|
|
// do not copy more than what fits - it may be smaller than before
|
|
if(fCapacity < fLength) {
|
|
fLength = fCapacity;
|
|
}
|
|
us_arrayCopy(array, 0, fArray, 0, fLength);
|
|
} else {
|
|
fLength = 0;
|
|
}
|
|
|
|
// release the old array
|
|
if(flags & kRefCounted) {
|
|
// the array is refCounted; decrement and release if 0
|
|
int32_t *pRefCount = ((int32_t *)array - 1);
|
|
if(--*pRefCount == 0) {
|
|
if(pBufferToDelete == 0) {
|
|
delete [] pRefCount;
|
|
} else {
|
|
// the caller requested to delete it himself
|
|
*pBufferToDelete = pRefCount;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// not enough memory for growCapacity and not even for the smaller newCapacity
|
|
// reset the old values for setToBogus() to release the array
|
|
fArray = array;
|
|
fFlags = flags;
|
|
setToBogus();
|
|
return FALSE;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
// private function for C API
|
|
U_CFUNC int32_t
|
|
T_UnicodeString_length(const UnicodeString *s)
|
|
{
|
|
return s->length();
|
|
}
|
|
|
|
// private function for C API
|
|
U_CFUNC int32_t
|
|
T_UnicodeString_extract(const UnicodeString *s, char *dst)
|
|
{
|
|
return s->extract(0, s->length(), dst, "");
|
|
}
|
|
|
|
|
|
//========================================
|
|
// Default converter caching
|
|
//========================================
|
|
|
|
UConverter*
|
|
UnicodeString::getDefaultConverter(UErrorCode &status)
|
|
{
|
|
UConverter *converter = 0;
|
|
|
|
if(fgDefaultConverter != 0) {
|
|
Mutex lock;
|
|
|
|
// need to check to make sure it wasn't taken out from under us
|
|
if(fgDefaultConverter != 0) {
|
|
converter = fgDefaultConverter;
|
|
fgDefaultConverter = 0;
|
|
}
|
|
}
|
|
|
|
// if the cache was empty, create a converter
|
|
if(converter == 0) {
|
|
converter = ucnv_open(0, &status);
|
|
if(U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return converter;
|
|
}
|
|
|
|
void
|
|
UnicodeString::releaseDefaultConverter(UConverter *converter)
|
|
{
|
|
if(fgDefaultConverter == 0) {
|
|
if (converter != 0) {
|
|
ucnv_reset(converter);
|
|
}
|
|
|
|
Mutex lock;
|
|
|
|
if(fgDefaultConverter == 0) {
|
|
fgDefaultConverter = converter;
|
|
converter = 0;
|
|
}
|
|
}
|
|
|
|
// it's safe to close a 0 converter
|
|
ucnv_close(converter);
|
|
}
|
|
|
|
//========================================
|
|
// Streaming (to be removed)
|
|
//========================================
|
|
|
|
#include "unistrm.h"
|
|
#include "filestrm.h"
|
|
|
|
|
|
inline uint8_t
|
|
uprv_hibyte(uint16_t x)
|
|
{ return (uint8_t)(x >> 8); }
|
|
|
|
inline uint8_t
|
|
uprv_lobyte(uint16_t x)
|
|
{ return (uint8_t)(x & 0xff); }
|
|
|
|
inline uint16_t
|
|
uprv_hiword(uint32_t x)
|
|
{ return (uint16_t)(x >> 16); }
|
|
|
|
inline uint16_t
|
|
uprv_loword(uint32_t x)
|
|
{ return (uint16_t)(x & 0xffff); }
|
|
|
|
inline void
|
|
writeLong(FileStream *os,
|
|
int32_t x)
|
|
{
|
|
uint16_t word = uprv_hiword((uint32_t)x);
|
|
T_FileStream_putc(os, uprv_hibyte(word));
|
|
T_FileStream_putc(os, uprv_lobyte(word));
|
|
word = uprv_loword((uint32_t)x);
|
|
T_FileStream_putc(os, uprv_hibyte(word));
|
|
T_FileStream_putc(os, uprv_lobyte(word));
|
|
}
|
|
|
|
inline int32_t
|
|
readLong(FileStream *is)
|
|
{
|
|
int32_t x = 0;
|
|
uint16_t byte;
|
|
|
|
byte = T_FileStream_getc(is);
|
|
x |= byte;
|
|
byte = T_FileStream_getc(is);
|
|
x = (x << 8) | byte;
|
|
byte = T_FileStream_getc(is);
|
|
x = (x << 8) | byte;
|
|
byte = T_FileStream_getc(is);
|
|
x = (x << 8) | byte;
|
|
|
|
return x;
|
|
}
|
|
|
|
inline void
|
|
writeUChar(FileStream *os,
|
|
UChar c)
|
|
{
|
|
T_FileStream_putc(os, uprv_hibyte(c));
|
|
T_FileStream_putc(os, uprv_lobyte(c));
|
|
}
|
|
|
|
inline UChar
|
|
readUChar(FileStream *is)
|
|
{
|
|
UChar c = 0;
|
|
uint16_t byte;
|
|
|
|
byte = T_FileStream_getc(is);
|
|
c |= byte;
|
|
byte = T_FileStream_getc(is);
|
|
c = (c << 8) | byte;
|
|
|
|
return c;
|
|
}
|
|
|
|
void
|
|
UnicodeStringStreamer::streamOut(const UnicodeString *s,
|
|
FileStream *os)
|
|
{
|
|
if(!T_FileStream_error(os)) {
|
|
writeLong(os, s->fLength);
|
|
}
|
|
|
|
const UChar *c = s->getArrayStart();
|
|
const UChar *end = c + s->fLength;
|
|
|
|
while(c != end && ! T_FileStream_error(os)) {
|
|
writeUChar(os, *c++);
|
|
}
|
|
}
|
|
|
|
void
|
|
UnicodeStringStreamer::streamIn(UnicodeString *s,
|
|
FileStream *is)
|
|
{
|
|
int32_t newSize;
|
|
|
|
// handle error conditions
|
|
if(T_FileStream_error(is) || T_FileStream_eof(is)) {
|
|
s->setToBogus();
|
|
return;
|
|
}
|
|
newSize = readLong(is);
|
|
if((newSize < 0) || T_FileStream_error(is)
|
|
|| ((newSize > 0) && T_FileStream_eof(is))) {
|
|
s->setToBogus(); //error condition
|
|
return;
|
|
}
|
|
|
|
// clone s's array, if needed
|
|
if(!s->cloneArrayIfNeeded(newSize, newSize, FALSE)) {
|
|
return;
|
|
}
|
|
|
|
UChar *c = s->getArrayStart();
|
|
UChar *end = c + newSize;
|
|
|
|
while(c < end && ! (T_FileStream_error(is) || T_FileStream_eof(is))) {
|
|
*c++ = readUChar(is);
|
|
}
|
|
|
|
// couldn't read all chars
|
|
if(c < end) {
|
|
s->setToBogus();
|
|
return;
|
|
}
|
|
|
|
s->fLength = newSize;
|
|
}
|
|
|
|
void
|
|
UnicodeStringStreamer::streamOut(const UnicodeString *s,
|
|
UMemoryStream *os)
|
|
{
|
|
if(!uprv_mstrm_error(os)) {
|
|
uprv_mstrm_write(os, (uint8_t*)&s->fLength, sizeof(s->fLength));
|
|
}
|
|
|
|
const UChar *c = s->getArrayStart();
|
|
const UChar *end = c + s->fLength;
|
|
|
|
while(c != end && ! uprv_mstrm_error(os)) {
|
|
uprv_mstrm_write(os, (uint8_t*)c, sizeof(*c));
|
|
c++;
|
|
}
|
|
}
|
|
|
|
void
|
|
UnicodeStringStreamer::streamIn(UnicodeString *s,
|
|
UMemoryStream *is)
|
|
{
|
|
int32_t newSize;
|
|
|
|
// handle error conditions
|
|
if(uprv_mstrm_error(is) || uprv_mstrm_eof(is)) {
|
|
s->setToBogus();
|
|
return;
|
|
}
|
|
uprv_mstrm_read(is, (uint8_t *)&newSize, sizeof(int32_t));
|
|
if((newSize < 0) || uprv_mstrm_error(is)
|
|
|| ((newSize > 0) && uprv_mstrm_eof(is))) {
|
|
s->setToBogus(); //error condition
|
|
return;
|
|
}
|
|
|
|
// clone s's array, if needed
|
|
if(!s->cloneArrayIfNeeded(newSize, newSize, FALSE)) {
|
|
return;
|
|
}
|
|
|
|
UChar *c = s->getArrayStart();
|
|
UChar *end = c + newSize;
|
|
|
|
while(c < end && ! (uprv_mstrm_error(is) || uprv_mstrm_eof(is))) {
|
|
uprv_mstrm_read(is, (uint8_t *)c, sizeof(*c));
|
|
c++;
|
|
}
|
|
|
|
// couldn't read all chars
|
|
if(c < end) {
|
|
s->setToBogus();
|
|
return;
|
|
}
|
|
|
|
s->fLength = newSize;
|
|
}
|
|
|
|
// console IO
|
|
|
|
#if U_IOSTREAM_SOURCE >= 198506
|
|
|
|
#if U_IOSTREAM_SOURCE >= 199711
|
|
|
|
U_COMMON_API std::ostream &
|
|
operator<<(std::ostream& stream, const UnicodeString& s)
|
|
|
|
#else
|
|
|
|
U_COMMON_API ostream &
|
|
operator<<(ostream& stream, const UnicodeString& s)
|
|
|
|
#endif
|
|
|
|
{
|
|
if(s.length() > 0) {
|
|
char buffer[200];
|
|
UConverter *converter;
|
|
UErrorCode errorCode = U_ZERO_ERROR;
|
|
|
|
// use the default converter to convert chunks of text
|
|
converter = UnicodeString::getDefaultConverter(errorCode);
|
|
if(U_SUCCESS(errorCode)) {
|
|
const UChar *us = s.getArrayStart(), *uLimit = us + s.length();
|
|
char *s, *sLimit = buffer + sizeof(buffer);
|
|
do {
|
|
errorCode = U_ZERO_ERROR;
|
|
s = buffer;
|
|
ucnv_fromUnicode(converter, &s, sLimit, &us, uLimit, 0, FALSE, &errorCode);
|
|
|
|
// write this chunk
|
|
if(s > buffer) {
|
|
stream.write(buffer, s - buffer);
|
|
}
|
|
} while(errorCode == U_BUFFER_OVERFLOW_ERROR);
|
|
UnicodeString::releaseDefaultConverter(converter);
|
|
}
|
|
}
|
|
|
|
stream.flush();
|
|
return stream;
|
|
}
|
|
|
|
#endif
|