sal/rtl/source/ustrbuf.c

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   7  * OpenOffice.org - a multi-platform office productivity suite
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   9  * $RCSfile: ustrbuf.c,v $
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  30
  31 #include <osl/interlck.h>
  32
  33 #ifndef _RTL_STRING_HXX_
  34 #include <rtl/ustrbuf.hxx>
  35 #endif
  36 #include <rtl/memory.h>
  37
  38 /*
  39 #include <rtl/alloc.h>
  40 */
  41
  42
  43
  44 /*************************************************************************
  45  *  rtl_uStringbuffer_newFromStr_WithLength
  46  */
  47 void SAL_CALL rtl_uStringbuffer_newFromStr_WithLength( rtl_uString ** newStr,
  48                                                        const sal_Unicode * value,
  49                                                        sal_Int32 count)
  50 {
  51     if (!value)
  52     {
  53         rtl_uString_new_WithLength( newStr, 16 );
  54         return;
  55     }
  56
  57     rtl_uString_new_WithLength( newStr, count + 16 );
  58     (*newStr)->length = count;
  59     rtl_copyMemory( (*newStr)->buffer, value, count * sizeof(sal_Unicode));
  60     return;
  61 }
  62
  63 /*************************************************************************
  64  *  rtl_uStringbuffer_newFromStringBuffer
  65  */
  66 sal_Int32 SAL_CALL rtl_uStringbuffer_newFromStringBuffer( rtl_uString ** newStr,
  67                                                           sal_Int32 capacity,
  68                                                           rtl_uString * oldStr )
  69 {
  70     sal_Int32 newCapacity = capacity;
  71
  72     if (newCapacity < oldStr->length)
  73         newCapacity = oldStr->length;
  74
  75     rtl_uString_new_WithLength( newStr, newCapacity );
  76
  77     if (oldStr->length > 0) {
  78         (*newStr)->length = oldStr->length;
  79         rtl_copyMemory( (*newStr)->buffer, oldStr->buffer, oldStr->length * sizeof(sal_Unicode));
  80     }
  81     return newCapacity;
  82 }
  83
  84 /*************************************************************************
  85  *  rtl_uStringbuffer_ensureCapacity
  86  */
  87 void SAL_CALL rtl_uStringbuffer_ensureCapacity
  88     (rtl_uString ** This, sal_Int32* capacity, sal_Int32 minimumCapacity)
  89 {
  90     if (minimumCapacity > *capacity)
  91     {
  92         rtl_uString * pTmp = *This;
  93         rtl_uString * pNew = NULL;
  94         *capacity = ((*This)->length + 1) * 2;
  95         if (minimumCapacity > *capacity)
  96             /* still lower, set to the minimum capacity */
  97             *capacity = minimumCapacity;
  98
  99         rtl_uString_new_WithLength(&pNew, *capacity);
 100         pNew->length = (*This)->length;
 101         *This = pNew;
 102
 103         rtl_copyMemory( (*This)->buffer, pTmp->buffer, pTmp->length * sizeof(sal_Unicode) );
 104         rtl_uString_release( pTmp );
 105     }
 106 }
 107
 108 /*************************************************************************
 109  *  rtl_uStringbuffer_insert
 110  */
 111 void SAL_CALL rtl_uStringbuffer_insert( rtl_uString ** This,
 112                                         sal_Int32 * capacity,
 113                                         sal_Int32 offset,
 114                                         const sal_Unicode * str,
 115                                         sal_Int32 len)
 116 {
 117     sal_Int32 nOldLen;
 118     sal_Unicode * pBuf;
 119     sal_Int32 n;
 120     if( len != 0 )
 121     {
 122         if (*capacity < (*This)->length + len)
 123             rtl_uStringbuffer_ensureCapacity( This, capacity, (*This)->length + len );
 124
 125         /*
 126         if( len == 1 )
 127             This->buffer
 128         */
 129         nOldLen = (*This)->length;
 130         pBuf = (*This)->buffer;
 131
 132         /* copy the tail */
 133         n = (nOldLen - offset);
 134         if( n == 1 )
 135                             /* optimized for 1 character */
 136             pBuf[offset + len] = pBuf[offset];
 137         else if( n > 1 )
 138             rtl_moveMemory( pBuf + offset + len, pBuf + offset, n * sizeof(sal_Unicode) );
 139
 140         /* insert the new characters */
 141         if( len == 1 )
 142             /* optimized for 1 character */
 143             pBuf[offset] = *str;
 144         else if( len > 1 )
 145             rtl_copyMemory( pBuf + offset, str, len * sizeof(sal_Unicode) );
 146         (*This)->length = nOldLen + len;
 147         pBuf[ nOldLen + len ] = 0;
 148     }
 149 }
 150
 151 void rtl_uStringbuffer_insertUtf32(
 152     rtl_uString ** pThis, sal_Int32 * capacity, sal_Int32 offset, sal_uInt32 c)
 153 {
 154     sal_Unicode buf[2];
 155     sal_Int32 len;
 156     OSL_ASSERT(c <= 0x10FFFF && !(c >= 0xD800 && c <= 0xDFFF));
 157     if (c <= 0xFFFF) {
 158         buf[0] = (sal_Unicode) c;
 159         len = 1;
 160     } else {
 161         c -= 0x10000;
 162         buf[0] = (sal_Unicode) ((c >> 10) | 0xD800);
 163         buf[1] = (sal_Unicode) ((c & 0x3FF) | 0xDC00);
 164         len = 2;
 165     }
 166     rtl_uStringbuffer_insert(pThis, capacity, offset, buf, len);
 167 }
 168
 169 /*************************************************************************
 170  *  rtl_uStringbuffer_insert_ascii
 171  */
 172 void SAL_CALL rtl_uStringbuffer_insert_ascii(   /*inout*/rtl_uString ** This,
 173                                                 /*inout*/sal_Int32 * capacity,
 174                                                 sal_Int32 offset,
 175                                                 const sal_Char * str,
 176                                                 sal_Int32 len)
 177 {
 178     sal_Int32 nOldLen;
 179     sal_Unicode * pBuf;
 180     sal_Int32 n;
 181     if( len != 0 )
 182     {
 183         if (*capacity < (*This)->length + len)
 184             rtl_uStringbuffer_ensureCapacity( This, capacity, (*This)->length + len );
 185
 186         nOldLen = (*This)->length;
 187         pBuf = (*This)->buffer;
 188
 189         /* copy the tail */
 190         n = (nOldLen - offset);
 191         if( n == 1 )
 192             /* optimized for 1 character */
 193             pBuf[offset + len] = pBuf[offset];
 194         else if( n > 1 )
 195             rtl_moveMemory( pBuf + offset + len, pBuf + offset, n * sizeof(sal_Unicode) );
 196
 197         /* insert the new characters */
 198         for( n = 0; n < len; n++ )
 199         {
 200             /* Check ASCII range */
 201             OSL_ENSURE( (*str & 0x80) == 0, "Found ASCII char > 127");
 202
 203             pBuf[offset + n] = (sal_Unicode)*(str++);
 204         }
 205
 206         (*This)->length = nOldLen + len;
 207         pBuf[ nOldLen + len ] = 0;
 208     }
 209 }
 210
 211