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 using namespace icu;
  17
  18 enum {
  19     U_SPACE=0x20,
  20     U_DQUOTE=0x22,
  21     U_COMMA=0x2c,
  22     U_LEFT_SQUARE_BRACKET=0x5b,
  23     U_BACKSLASH=0x5c,
  24     U_RIGHT_SQUARE_BRACKET=0x5d,
  25     U_SMALL_U=0x75
  26 };
  27
  28 // Verify that a UErrorCode is successful; exit(1) if not
  29 void check(UErrorCode& status, const char* msg) {
  30     if (U_FAILURE(status)) {
  31         printf("ERROR: %s (%s)\n", u_errorName(status), msg);
  32         exit(1);
  33     }
  34     // printf("Ok: %s\n", msg);
  35 }
  36
  37 // Append a hex string to the target
  38 static UnicodeString& appendHex(uint32_t number,
  39                          int8_t digits,
  40                          UnicodeString& target) {
  41     uint32_t digit;
  42     while (digits > 0) {
  43         digit = (number >> ((--digits) * 4)) & 0xF;
  44         target += (UChar)(digit < 10 ? 0x30 + digit : 0x41 - 10 + digit);
  45     }
  46     return target;
  47 }
  48
  49 // Replace nonprintable characters with unicode escapes
  50 UnicodeString escape(const UnicodeString &source) {
  51     int32_t i;
  52     UnicodeString target;
  53     target += (UChar)U_DQUOTE;
  54     for (i=0; i<source.length(); ++i) {
  55         UChar ch = source[i];
  56         if (ch < 0x09 || (ch > 0x0D && ch < 0x20) || ch > 0x7E) {
  57             (target += (UChar)U_BACKSLASH) += (UChar)U_SMALL_U;
  58             appendHex(ch, 4, target);
  59         } else {
  60             target += ch;
  61         }
  62     }
  63     target += (UChar)U_DQUOTE;
  64     return target;
  65 }
  66
  67 // Print the given string to stdout using the UTF-8 converter
  68 void uprintf(const UnicodeString &str) {
  69     char stackBuffer[100];
  70     char *buf = 0;
  71
  72     int32_t bufLen = str.extract(0, 0x7fffffff, stackBuffer, sizeof(stackBuffer), "UTF-8");
  73     if(bufLen < sizeof(stackBuffer)) {
  74         buf = stackBuffer;
  75     } else {
  76         buf = new char[bufLen + 1];
  77         bufLen = str.extract(0, 0x7fffffff, buf, bufLen + 1, "UTF-8");
  78     }
  79     printf("%s", buf);
  80     if(buf != stackBuffer) {
  81         delete[] buf;
  82     }
  83 }
  84
  85 // Create a display string for a formattable
  86 UnicodeString formattableToString(const Formattable& f) {
  87     switch (f.getType()) {
  88     case Formattable::kDate:
  89         // TODO: Finish implementing this
  90         return UNICODE_STRING_SIMPLE("Formattable_DATE_TBD");
  91     case Formattable::kDouble:
  92         {
  93             char buf[256];
  94             sprintf(buf, "%gD", f.getDouble());
  95             return UnicodeString(buf, "");
  96         }
  97     case Formattable::kLong:
  98     case Formattable::kInt64:
  99         {
 100             char buf[256];
 101             sprintf(buf, "%ldL", f.getLong());
 102             return UnicodeString(buf, "");
 103         }
 104     case Formattable::kString:
 105         return UnicodeString((UChar)U_DQUOTE).append(f.getString()).append((UChar)U_DQUOTE);
 106     case Formattable::kArray:
 107         {
 108             int32_t i, count;
 109             const Formattable* array = f.getArray(count);
 110             UnicodeString result((UChar)U_LEFT_SQUARE_BRACKET);
 111             for (i=0; i<count; ++i) {
 112                 if (i > 0) {
 113                     (result += (UChar)U_COMMA) += (UChar)U_SPACE;
 114                 }
 115                 result += formattableToString(array[i]);
 116             }
 117             result += (UChar)U_RIGHT_SQUARE_BRACKET;
 118             return result;
 119         }
 120     default:
 121         return UNICODE_STRING_SIMPLE("INVALID_Formattable");
 122     }
 123 }