icuSources/samples/case/ucase.c

   1 /*
   2 *******************************************************************************
   3 *
   4 *   Copyright (C) 2003-2004, International Business Machines
   5 *   Corporation and others.  All Rights Reserved.
   6 *
   7 ****
   8 *
   9 *   Case folding examples, in C
  10 *
  11 *******************************************************************************
  12 */
  13
  14 #include "unicode/uchar.h"
  15 #include "unicode/ustring.h"
  16 #include "unicode/utypes.h"
  17 #include "unicode/ustdio.h"
  18
  19 /* Note: don't use 'k' or 'K' because we might be on EBCDIC */
  20
  21 int c_main(UFILE *out)
  22 {
  23   UChar32 ch;
  24   UErrorCode errorCode = U_ZERO_ERROR;
  25   static const UChar upper[] = {0x61, 0x42, 0x49, 0}; /* upper = "aBI" */
  26   static const UChar lower[] = {0x61, 0x42, 0x69, 0}; /* lower = "abi" */
  27   /* unfold = "aB LATIN SMALL LETTER DOTLESS I" */
  28   static const UChar unfold[] = {0x61, 0x42, 0x131, 0} ;
  29   UChar buffer[32];
  30   const UChar char_k = 0x006b; /* 'k' */
  31   const UChar char_K = 0x004b; /* 'K' */
  32
  33   int length;
  34
  35   printf("** C Case Mapping Sample\n");
  36
  37   /* uchar.h APIs, single character case mapping */
  38   ch = u_toupper(char_k); /* ch = 'K' */
  39   u_fprintf(out, "toupper(%C) = %C\n", char_k, ch);
  40   ch = u_tolower(ch); /* ch = 'k' */
  41   u_fprintf(out, "tolower() = %C\n", ch);
  42   ch = u_totitle(char_k); /* ch = 'K' */
  43   u_fprintf(out, "totitle(%C) = %C\n", char_k, ch);
  44   ch = u_foldCase(char_K, U_FOLD_CASE_DEFAULT); /* ch = 'k' */
  45   u_fprintf(out, "u_foldCase(%C, U_FOLD_CASE_DEFAULT) = %C\n", char_K, (UChar) ch);
  46
  47   /* ustring.h APIs, UChar * string case mapping with a Turkish locale */
  48   /* result buffer = "ab?" latin small letter a, latin small letter b, latin
  49      small letter dotless i */
  50   length = u_strToLower(buffer, sizeof(buffer)/sizeof(buffer[0]), upper,
  51                         sizeof(upper)/sizeof(upper[0]), "tr", &errorCode);
  52   if(U_FAILURE(errorCode) || buffer[length]!=0) {
  53     u_fprintf(out, "error in u_strToLower(Turkish locale)=%ld error=%s\n", length,
  54            u_errorName(errorCode));
  55   }
  56
  57   u_fprintf(out, "u_strToLower(%S, turkish) -> %S\n", upper, buffer);
  58
  59
  60   /* ustring.h APIs, UChar * string case mapping with a Engish locale */
  61   /* result buffer = "ABI" latin CAPITAL letter A, latin capital letter B,
  62      latin capital letter I */
  63   length = u_strToUpper(buffer, sizeof(buffer)/sizeof(buffer[0]), upper,
  64                         sizeof(upper)/sizeof(upper[0]), "en", &errorCode);
  65   if(U_FAILURE(errorCode) || buffer[length]!=0) {
  66     u_fprintf(out, "error in u_strToLower(English locale)=%ld error=%s\n", length,
  67               u_errorName(errorCode));
  68   }
  69   u_fprintf(out, "u_strToUpper(%S, english) -> %S\n", lower, buffer);
  70
  71
  72   /* ustring.h APIs, UChar * string case folding */
  73   /* result buffer = "abi" */
  74   length = u_strFoldCase(buffer, sizeof(buffer)/sizeof(buffer[0]), unfold,
  75                          sizeof(unfold)/sizeof(unfold[0]), U_FOLD_CASE_DEFAULT,
  76                          &errorCode);
  77   if(U_FAILURE(errorCode) || buffer[length]!=0) {
  78     u_fprintf(out, "error in u_strFoldCase()=%ld error=%s\n", length,
  79            u_errorName(errorCode));
  80   }
  81   u_fprintf(out, "u_strFoldCase(%S, U_FOLD_CASE_DEFAULT) -> %S\n", unfold, buffer);
  82   u_fprintf(out, "\n** end of C sample\n");
  83
  84   return 0;
  85 }