sal/rtl/source/ustrbuf.c

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  27
  28 #include <osl/interlck.h>
  29
  30 #ifndef _RTL_STRING_HXX_
  31 #include <rtl/ustrbuf.hxx>
  32 #endif
  33 #include <rtl/memory.h>
  34
  35 /*
  36 #include <rtl/alloc.h>
  37 */
  38
  39
  40
  41 /*************************************************************************
  42  *  rtl_uStringbuffer_newFromStr_WithLength
  43  */
  44 void SAL_CALL rtl_uStringbuffer_newFromStr_WithLength( rtl_uString ** newStr,
  45                                                        const sal_Unicode * value,
  46                                                        sal_Int32 count)
  47 {
  48     if (!value)
  49     {
  50         rtl_uString_new_WithLength( newStr, 16 );
  51         return;
  52     }
  53
  54     rtl_uString_new_WithLength( newStr, count + 16 );
  55     (*newStr)->length = count;
  56     rtl_copyMemory( (*newStr)->buffer, value, count * sizeof(sal_Unicode));
  57     return;
  58 }
  59
  60 /*************************************************************************
  61  *  rtl_uStringbuffer_newFromStringBuffer
  62  */
  63 sal_Int32 SAL_CALL rtl_uStringbuffer_newFromStringBuffer( rtl_uString ** newStr,
  64                                                           sal_Int32 capacity,
  65                                                           rtl_uString * oldStr )
  66 {
  67     sal_Int32 newCapacity = capacity;
  68
  69     if (newCapacity < oldStr->length)
  70         newCapacity = oldStr->length;
  71
  72     rtl_uString_new_WithLength( newStr, newCapacity );
  73
  74     if (oldStr->length > 0) {
  75         (*newStr)->length = oldStr->length;
  76         rtl_copyMemory( (*newStr)->buffer, oldStr->buffer, oldStr->length * sizeof(sal_Unicode));
  77     }
  78     return newCapacity;
  79 }
  80
  81 /*************************************************************************
  82  *  rtl_uStringbuffer_ensureCapacity
  83  */
  84 void SAL_CALL rtl_uStringbuffer_ensureCapacity
  85     (rtl_uString ** This, sal_Int32* capacity, sal_Int32 minimumCapacity)
  86 {
  87     if (minimumCapacity > *capacity)
  88     {
  89         rtl_uString * pTmp = *This;
  90         rtl_uString * pNew = NULL;
  91         *capacity = ((*This)->length + 1) * 2;
  92         if (minimumCapacity > *capacity)
  93             /* still lower, set to the minimum capacity */
  94             *capacity = minimumCapacity;
  95
  96         rtl_uString_new_WithLength(&pNew, *capacity);
  97         pNew->length = (*This)->length;
  98         *This = pNew;
  99
 100         rtl_copyMemory( (*This)->buffer, pTmp->buffer, pTmp->length * sizeof(sal_Unicode) );
 101         rtl_uString_release( pTmp );
 102     }
 103 }
 104
 105 /*************************************************************************
 106  *  rtl_uStringbuffer_insert
 107  */
 108 void SAL_CALL rtl_uStringbuffer_insert( rtl_uString ** This,
 109                                         sal_Int32 * capacity,
 110                                         sal_Int32 offset,
 111                                         const sal_Unicode * str,
 112                                         sal_Int32 len)
 113 {
 114     sal_Int32 nOldLen;
 115     sal_Unicode * pBuf;
 116     sal_Int32 n;
 117     if( len != 0 )
 118     {
 119         if (*capacity < (*This)->length + len)
 120             rtl_uStringbuffer_ensureCapacity( This, capacity, (*This)->length + len );
 121
 122         /*
 123         if( len == 1 )
 124             This->buffer
 125         */
 126         nOldLen = (*This)->length;
 127         pBuf = (*This)->buffer;
 128
 129         /* copy the tail */
 130         n = (nOldLen - offset);
 131         if( n == 1 )
 132                             /* optimized for 1 character */
 133             pBuf[offset + len] = pBuf[offset];
 134         else if( n > 1 )
 135             rtl_moveMemory( pBuf + offset + len, pBuf + offset, n * sizeof(sal_Unicode) );
 136
 137         /* insert the new characters */
 138         if( len == 1 )
 139             /* optimized for 1 character */
 140             pBuf[offset] = *str;
 141         else if( len > 1 )
 142             rtl_copyMemory( pBuf + offset, str, len * sizeof(sal_Unicode) );
 143         (*This)->length = nOldLen + len;
 144         pBuf[ nOldLen + len ] = 0;
 145     }
 146 }
 147
 148 void rtl_uStringbuffer_insertUtf32(
 149     rtl_uString ** pThis, sal_Int32 * capacity, sal_Int32 offset, sal_uInt32 c)
 150 {
 151     sal_Unicode buf[2];
 152     sal_Int32 len;
 153     OSL_ASSERT(c <= 0x10FFFF && !(c >= 0xD800 && c <= 0xDFFF));
 154     if (c <= 0xFFFF) {
 155         buf[0] = (sal_Unicode) c;
 156         len = 1;
 157     } else {
 158         c -= 0x10000;
 159         buf[0] = (sal_Unicode) ((c >> 10) | 0xD800);
 160         buf[1] = (sal_Unicode) ((c & 0x3FF) | 0xDC00);
 161         len = 2;
 162     }
 163     rtl_uStringbuffer_insert(pThis, capacity, offset, buf, len);
 164 }
 165
 166 /*************************************************************************
 167  *  rtl_uStringbuffer_insert_ascii
 168  */
 169 void SAL_CALL rtl_uStringbuffer_insert_ascii(   /*inout*/rtl_uString ** This,
 170                                                 /*inout*/sal_Int32 * capacity,
 171                                                 sal_Int32 offset,
 172                                                 const sal_Char * str,
 173                                                 sal_Int32 len)
 174 {
 175     sal_Int32 nOldLen;
 176     sal_Unicode * pBuf;
 177     sal_Int32 n;
 178     if( len != 0 )
 179     {
 180         if (*capacity < (*This)->length + len)
 181             rtl_uStringbuffer_ensureCapacity( This, capacity, (*This)->length + len );
 182
 183         nOldLen = (*This)->length;
 184         pBuf = (*This)->buffer;
 185
 186         /* copy the tail */
 187         n = (nOldLen - offset);
 188         if( n == 1 )
 189             /* optimized for 1 character */
 190             pBuf[offset + len] = pBuf[offset];
 191         else if( n > 1 )
 192             rtl_moveMemory( pBuf + offset + len, pBuf + offset, n * sizeof(sal_Unicode) );
 193
 194         /* insert the new characters */
 195         for( n = 0; n < len; n++ )
 196         {
 197             /* Check ASCII range */
 198             OSL_ENSURE( (*str & 0x80) == 0, "Found ASCII char > 127");
 199
 200             pBuf[offset + n] = (sal_Unicode)*(str++);
 201         }
 202
 203         (*This)->length = nOldLen + len;
 204         pBuf[ nOldLen + len ] = 0;
 205     }
 206 }
 207
 208