The Tor Browser: intl/icu/source/common/appendable.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /*

     2 *******************************************************************************

     3 *   Copyright (C) 2011-2012, International Business Machines

     4 *   Corporation and others.  All Rights Reserved.

     5 *******************************************************************************

     6 *   file name:  appendable.cpp

     7 *   encoding:   US-ASCII

     8 *   tab size:   8 (not used)

     9 *   indentation:4

    10 *

    11 *   created on: 2010dec07

    12 *   created by: Markus W. Scherer

    13 */

    15 #include "unicode/utypes.h"

    16 #include "unicode/appendable.h"

    17 #include "unicode/utf16.h"

    19 U_NAMESPACE_BEGIN

    21 Appendable::~Appendable() {}

    23 UBool

    24 Appendable::appendCodePoint(UChar32 c) {

    25     if(c<=0xffff) {

    26         return appendCodeUnit((UChar)c);

    27     } else {

    28         return appendCodeUnit(U16_LEAD(c)) && appendCodeUnit(U16_TRAIL(c));

    29     }

    30 }

    32 UBool

    33 Appendable::appendString(const UChar *s, int32_t length) {

    34     if(length<0) {

    35         UChar c;

    36         while((c=*s++)!=0) {

    37             if(!appendCodeUnit(c)) {

    38                 return FALSE;

    39             }

    40         }

    41     } else if(length>0) {

    42         const UChar *limit=s+length;

    43         do {

    44             if(!appendCodeUnit(*s++)) {

    45                 return FALSE;

    46             }

    47         } while(s<limit);

    48     }

    49     return TRUE;

    50 }

    52 UBool

    53 Appendable::reserveAppendCapacity(int32_t /*appendCapacity*/) {

    54     return TRUE;

    55 }

    57 UChar *

    58 Appendable::getAppendBuffer(int32_t minCapacity,

    59                             int32_t /*desiredCapacityHint*/,

    60                             UChar *scratch, int32_t scratchCapacity,

    61                             int32_t *resultCapacity) {

    62     if(minCapacity<1 || scratchCapacity<minCapacity) {

    63         *resultCapacity=0;

    64         return NULL;

    65     }

    66     *resultCapacity=scratchCapacity;

    67     return scratch;

    68 }

    70 // UnicodeStringAppendable is implemented in unistr.cpp.

    72 U_NAMESPACE_END

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