icuSources/samples/numfmt/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) 1999-2009, International Business Machines Corporation and
   8  * others. All Rights Reserved.
   9  *************************************************************************/
  10
  11 #include "unicode/unistr.h"
  12 #include "unicode/fmtable.h"
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15
  16 enum {
  17     U_SPACE=0x20,
  18     U_DQUOTE=0x22,
  19     U_COMMA=0x2c,
  20     U_LEFT_SQUARE_BRACKET=0x5b,
  21     U_BACKSLASH=0x5c,
  22     U_RIGHT_SQUARE_BRACKET=0x5d,
  23     U_SMALL_U=0x75
  24 };
  25
  26 // Verify that a UErrorCode is successful; exit(1) if not
  27 void check(UErrorCode& status, const char* msg) {
  28     if (U_FAILURE(status)) {
  29         printf("ERROR: %s (%s)\n", u_errorName(status), msg);
  30         exit(1);
  31     }
  32     // printf("Ok: %s\n", msg);
  33 }
  34
  35 // Append a hex string to the target
  36 static UnicodeString& appendHex(uint32_t number,
  37                          int8_t digits,
  38                          UnicodeString& target) {
  39     uint32_t digit;
  40     while (digits > 0) {
  41         digit = (number >> ((--digits) * 4)) & 0xF;
  42         target += (UChar)(digit < 10 ? 0x30 + digit : 0x41 - 10 + digit);
  43     }
  44     return target;
  45 }
  46
  47 // Replace nonprintable characters with unicode escapes
  48 UnicodeString escape(const UnicodeString &source) {
  49     int32_t i;
  50     UnicodeString target;
  51     target += (UChar)U_DQUOTE;
  52     for (i=0; i<source.length(); ++i) {
  53         UChar ch = source[i];
  54         if (ch < 0x09 || (ch > 0x0D && ch < 0x20) || ch > 0x7E) {
  55             (target += (UChar)U_BACKSLASH) += (UChar)U_SMALL_U;
  56             appendHex(ch, 4, target);
  57         } else {
  58             target += ch;
  59         }
  60     }
  61     target += (UChar)U_DQUOTE;
  62     return target;
  63 }
  64
  65 // Print the given string to stdout using the UTF-8 converter
  66 void uprintf(const UnicodeString &str) {
  67     char stackBuffer[100];
  68     char *buf = 0;
  69
  70     int32_t bufLen = str.extract(0, 0x7fffffff, stackBuffer, sizeof(stackBuffer), "UTF-8");
  71     if(bufLen < sizeof(stackBuffer)) {
  72         buf = stackBuffer;
  73     } else {
  74         buf = new char[bufLen + 1];
  75         bufLen = str.extract(0, 0x7fffffff, buf, bufLen + 1, "UTF-8");
  76     }
  77     printf("%s", buf);
  78     if(buf != stackBuffer) {
  79         delete[] buf;
  80     }
  81 }
  82
  83 // Create a display string for a formattable
  84 UnicodeString formattableToString(const Formattable& f) {
  85     switch (f.getType()) {
  86     case Formattable::kDate:
  87         // TODO: Finish implementing this
  88         return UNICODE_STRING_SIMPLE("Formattable_DATE_TBD");
  89     case Formattable::kDouble:
  90         {
  91             char buf[256];
  92             sprintf(buf, "%gD", f.getDouble());
  93             return UnicodeString(buf, "");
  94         }
  95     case Formattable::kLong:
  96     case Formattable::kInt64:
  97         {
  98             char buf[256];
  99             sprintf(buf, "%ldL", f.getLong());
 100             return UnicodeString(buf, "");
 101         }
 102     case Formattable::kString:
 103         return UnicodeString((UChar)U_DQUOTE).append(f.getString()).append((UChar)U_DQUOTE);
 104     case Formattable::kArray:
 105         {
 106             int32_t i, count;
 107             const Formattable* array = f.getArray(count);
 108             UnicodeString result((UChar)U_LEFT_SQUARE_BRACKET);
 109             for (i=0; i<count; ++i) {
 110                 if (i > 0) {
 111                     (result += (UChar)U_COMMA) += (UChar)U_SPACE;
 112                 }
 113                 result += formattableToString(array[i]);
 114             }
 115             result += (UChar)U_RIGHT_SQUARE_BRACKET;
 116             return result;
 117         }
 118     default:
 119         return UNICODE_STRING_SIMPLE("INVALID_Formattable");
 120     }
 121 }