icuSources/samples/datefmt/util.cpp

   1 /********************************************************************
   2  *   © 2016 and later: Unicode, Inc. and others.
   3  *   License & terms of use: http://www.unicode.org/copyright.html#License
   4  *************************************************************************
   5  *************************************************************************
   6  * COPYRIGHT:
   7  * Copyright (c) 1999-2003, International Business Machines Corporation and
   8  * others. All Rights Reserved.
   9  *************************************************************************/
  10
  11 #include "unicode/unistr.h"
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14
  15 using namespace icu;
  16
  17 // Verify that a UErrorCode is successful; exit(1) if not
  18 void check(UErrorCode& status, const char* msg) {
  19     if (U_FAILURE(status)) {
  20         printf("ERROR: %s (%s)\n", u_errorName(status), msg);
  21         exit(1);
  22     }
  23     // printf("Ok: %s\n", msg);
  24 }
  25
  26 // Append a hex string to the target
  27 static UnicodeString& appendHex(uint32_t number,
  28                          int8_t digits,
  29                          UnicodeString& target) {
  30     static const UnicodeString DIGIT_STRING("0123456789ABCDEF");
  31     while (digits > 0) {
  32         target += DIGIT_STRING[(number >> ((--digits) * 4)) & 0xF];
  33     }
  34     return target;
  35 }
  36
  37 // Replace nonprintable characters with unicode escapes
  38 UnicodeString escape(const UnicodeString &source) {
  39     int32_t i;
  40     UnicodeString target;
  41     target += "\"";
  42     for (i=0; i<source.length(); ++i) {
  43         UChar ch = source[i];
  44         if (ch < 0x09 || (ch > 0x0A && ch < 0x20) || ch > 0x7E) {
  45             target += "\\u";
  46             appendHex(ch, 4, target);
  47         } else {
  48             target += ch;
  49         }
  50     }
  51     target += "\"";
  52     return target;
  53 }
  54
  55 // Print the given string to stdout
  56 void uprintf(const UnicodeString &str) {
  57     char *buf = 0;
  58     int32_t len = str.length();
  59     // int32_t bufLen = str.extract(0, len, buf); // Preflight
  60     /* Preflighting seems to be broken now, so assume 1-1 conversion,
  61        plus some slop. */
  62     int32_t bufLen = len + 16;
  63         int32_t actualLen;
  64     buf = new char[bufLen + 1];
  65     actualLen = str.extract(0, len, buf/*, bufLen*/); // Default codepage conversion
  66     buf[actualLen] = 0;
  67     printf("%s", buf);
  68     delete[] buf;
  69 }