icuSources/samples/case/ucase.c

   1 /*
   2 *******************************************************************************
   3 *
   4 *   © 2016 and later: Unicode, Inc. and others.
   5 *   License & terms of use: http://www.unicode.org/copyright.html#License
   6 *
   7 *******************************************************************************
   8 *******************************************************************************
   9 *
  10 *   Copyright (C) 2003-2004, International Business Machines
  11 *   Corporation and others.  All Rights Reserved.
  12 *
  13 ****
  14 *
  15 *   Case folding examples, in C
  16 *
  17 *******************************************************************************
  18 */
  19
  20 #include "unicode/uchar.h"
  21 #include "unicode/ustring.h"
  22 #include "unicode/utypes.h"
  23 #include "unicode/ustdio.h"
  24
  25 /* Note: don't use 'k' or 'K' because we might be on EBCDIC */
  26
  27 int c_main(UFILE *out)
  28 {
  29   UChar32 ch;
  30   UErrorCode errorCode = U_ZERO_ERROR;
  31   static const UChar upper[] = {0x61, 0x42, 0x49, 0}; /* upper = "aBI" */
  32   static const UChar lower[] = {0x61, 0x42, 0x69, 0}; /* lower = "abi" */
  33   /* unfold = "aB LATIN SMALL LETTER DOTLESS I" */
  34   static const UChar unfold[] = {0x61, 0x42, 0x131, 0} ;
  35   UChar buffer[32];
  36   const UChar char_k = 0x006b; /* 'k' */
  37   const UChar char_K = 0x004b; /* 'K' */
  38
  39   int length;
  40
  41   printf("** C Case Mapping Sample\n");
  42
  43   /* uchar.h APIs, single character case mapping */
  44   ch = u_toupper(char_k); /* ch = 'K' */
  45   u_fprintf(out, "toupper(%C) = %C\n", char_k, ch);
  46   ch = u_tolower(ch); /* ch = 'k' */
  47   u_fprintf(out, "tolower() = %C\n", ch);
  48   ch = u_totitle(char_k); /* ch = 'K' */
  49   u_fprintf(out, "totitle(%C) = %C\n", char_k, ch);
  50   ch = u_foldCase(char_K, U_FOLD_CASE_DEFAULT); /* ch = 'k' */
  51   u_fprintf(out, "u_foldCase(%C, U_FOLD_CASE_DEFAULT) = %C\n", char_K, (UChar) ch);
  52
  53   /* ustring.h APIs, UChar * string case mapping with a Turkish locale */
  54   /* result buffer = "ab?" latin small letter a, latin small letter b, latin
  55      small letter dotless i */
  56   length = u_strToLower(buffer, sizeof(buffer)/sizeof(buffer[0]), upper,
  57                         sizeof(upper)/sizeof(upper[0]), "tr", &errorCode);
  58   if(U_FAILURE(errorCode) || buffer[length]!=0) {
  59     u_fprintf(out, "error in u_strToLower(Turkish locale)=%ld error=%s\n", length,
  60            u_errorName(errorCode));
  61   }
  62
  63   u_fprintf(out, "u_strToLower(%S, turkish) -> %S\n", upper, buffer);
  64
  65
  66   /* ustring.h APIs, UChar * string case mapping with a English locale */
  67   /* result buffer = "ABI" latin CAPITAL letter A, latin capital letter B,
  68      latin capital letter I */
  69   length = u_strToUpper(buffer, sizeof(buffer)/sizeof(buffer[0]), upper,
  70                         sizeof(upper)/sizeof(upper[0]), "en", &errorCode);
  71   if(U_FAILURE(errorCode) || buffer[length]!=0) {
  72     u_fprintf(out, "error in u_strToLower(English locale)=%ld error=%s\n", length,
  73               u_errorName(errorCode));
  74   }
  75   u_fprintf(out, "u_strToUpper(%S, english) -> %S\n", lower, buffer);
  76
  77
  78   /* ustring.h APIs, UChar * string case folding */
  79   /* result buffer = "abi" */
  80   length = u_strFoldCase(buffer, sizeof(buffer)/sizeof(buffer[0]), unfold,
  81                          sizeof(unfold)/sizeof(unfold[0]), U_FOLD_CASE_DEFAULT,
  82                          &errorCode);
  83   if(U_FAILURE(errorCode) || buffer[length]!=0) {
  84     u_fprintf(out, "error in u_strFoldCase()=%ld error=%s\n", length,
  85            u_errorName(errorCode));
  86   }
  87   u_fprintf(out, "u_strFoldCase(%S, U_FOLD_CASE_DEFAULT) -> %S\n", unfold, buffer);
  88   u_fprintf(out, "\n** end of C sample\n");
  89
  90   return 0;
  91 }