/[pcre]/code/branches/pcre16/pcre_ord2utf8.c
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revision 780 by zherczeg, Wed Nov 23 17:23:20 2011 UTC revision 781 by zherczeg, Sat Dec 3 07:58:30 2011 UTC
# Line 52  character value into a UTF8 string. */ Line 52  character value into a UTF8 string. */
52  *       Convert character value to UTF-8         *  *       Convert character value to UTF-8         *
53  *************************************************/  *************************************************/
54    
55  /* This function takes an integer value in the range 0 - 0x7fffffff  /* This function takes an integer value in the range 0 - 0x10ffff
56  and encodes it as a UTF-8 character in 0 to 6 bytes.  and encodes it as a UTF-8 character in 1 to 6 pcre_uchars.
57    
58  Arguments:  Arguments:
59    cvalue     the character value    cvalue     the character value
60    buffer     pointer to buffer for result - at least 6 bytes long    buffer     pointer to buffer for result - at least 6 pcre_uchars long
61    
62  Returns:     number of characters placed in the buffer  Returns:     number of characters placed in the buffer
63  */  */
64    
65  int  int
66  PRIV(ord2utf8)(int cvalue, pcre_uint8 *buffer)  PRIV(ord2utf)(pcre_uint32 cvalue, pcre_uchar *buffer)
67  {  {
68  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
69    
70  register int i, j;  register int i, j;
71    
72    /* Checking invalid cvalue character, encoded as invalid UTF-16 character.
73    Should never happen in practice. */
74    if ((cvalue & 0xf800) == 0xd800 || cvalue >= 0x110000)
75      cvalue = 0xfffe;
76    
77  for (i = 0; i < PRIV(utf8_table1_size); i++)  for (i = 0; i < PRIV(utf8_table1_size); i++)
78    if (cvalue <= PRIV(utf8_table1)[i]) break;    if (cvalue <= PRIV(utf8_table1)[i]) break;
79  buffer += i;  buffer += i;
# Line 77  for (j = i; j > 0; j--) Line 84  for (j = i; j > 0; j--)
84   }   }
85  *buffer = PRIV(utf8_table2)[i] | cvalue;  *buffer = PRIV(utf8_table2)[i] | cvalue;
86  return i + 1;  return i + 1;
87    
88  #else  #else
89    
90  (void)(cvalue);  /* Keep compiler happy; this function won't ever be */  (void)(cvalue);  /* Keep compiler happy; this function won't ever be */
91  (void)(buffer);  /* called when SUPPORT_UTF8 is not defined. */  (void)(buffer);  /* called when SUPPORT_UTF8 is not defined. */
92  return 0;  return 0;
93    
94  #endif  #endif
95  }  }
96    
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