icuSources/samples/citer/citer.cpp

   1 /*
   2 *******************************************************************************
   3 *
   4 *   Copyright (C) 2002-2003, International Business Machines
   5 *   Corporation and others.  All Rights Reserved.
   6 *
   7 *******************************************************************************
   8 */
   9
  10 #include "unicode/uchriter.h"
  11 #include "unicode/schriter.h"
  12 #include "unicode/ustring.h"
  13 #include <stdio.h>
  14 #include <iostream.h>
  15 #include <unicode/brkiter.h>
  16 #include <stdlib.h>
  17
  18 void printUnicodeString(const UnicodeString &s) {
  19   char charBuf[1000];
  20   s.extract(0, s.length(), charBuf, sizeof(charBuf)-1, 0);
  21   charBuf[sizeof(charBuf)-1] = 0;
  22   cout << charBuf;
  23 }
  24
  25 void printUChar(UChar32 ch) {
  26   char charBuf[1000];
  27   charBuf[sizeof(charBuf)-1] = 0;
  28   if(ch < 127) {
  29     cout << (char) ch;
  30   } else if (ch == CharacterIterator::DONE) {
  31     cout << "[CharacterIterator::DONE = 0xFFFF]";
  32   } else {
  33     cout << "[" << ch << "]";
  34   }
  35 }
  36
  37 class Test
  38 {
  39 public:
  40   void TestUChariter();
  41   void TestStringiter();
  42 };
  43
  44 void Test::TestUChariter() {
  45   const char testChars[] = "Now is the time for all good men to come "
  46     "to the aid of their country.";
  47
  48   UnicodeString testString(testChars,"");
  49   const UChar *testText  = testString.getTerminatedBuffer();
  50
  51   UCharCharacterIterator iter(testText, u_strlen(testText));
  52   UCharCharacterIterator* test2 = (UCharCharacterIterator*)iter.clone();
  53
  54   cout << "testText = " << testChars;
  55
  56   if (iter != *test2 ) {
  57     printf("clone() or equals() failed: Two clones tested unequal\n");
  58   }
  59
  60   UnicodeString result1, result2;
  61   // getting and comparing the text within the iterators
  62   iter.getText(result1);
  63   test2->getText(result2);
  64   if (result1 != result2) {
  65     printf("iter.getText() != clone.getText()\n");
  66   }
  67
  68   cout << endl;
  69   // Demonstrates seeking forward using the iterator.
  70   cout << "Forward  = ";
  71
  72   UChar c = iter.first();
  73   printUChar(c);  // The first char
  74   int32_t i = 0;
  75
  76   if (iter.startIndex() != 0 || iter.endIndex() != u_strlen(testText)) {
  77     printf("startIndex() or endIndex() failed\n");
  78   }
  79
  80
  81   // Testing forward iteration...
  82   do {
  83     if (c == CharacterIterator::DONE && i != u_strlen(testText)) {
  84       printf("Iterator reached end prematurely");
  85     }
  86     else if (c != testText[i]) {
  87       printf("Character mismatch at position %d\n" + i);
  88     }
  89     if (iter.current() != c) {
  90       printf("current() isn't working right");
  91     }
  92     if (iter.getIndex() != i) {
  93             printf("getIndex() isn't working right\n");
  94     }
  95     if (c != CharacterIterator::DONE) {
  96       c = iter.next();
  97       i++;
  98     }
  99
 100     cout << "|";
 101     printUChar(c);
 102
 103   } while (c != CharacterIterator::DONE);
 104
 105   delete test2;
 106   cout << endl;
 107 }
 108
 109
 110 void Test::TestStringiter() {
 111   const char testChars[] = "Now is the time for all good men to come "
 112     "to the aid of their country.";
 113
 114   UnicodeString testString(testChars,"");
 115   const UChar *testText  = testString.getTerminatedBuffer();
 116
 117   StringCharacterIterator iter(testText, u_strlen(testText));
 118   StringCharacterIterator* test2 = (StringCharacterIterator*)iter.clone();
 119
 120   if (iter != *test2 ) {
 121     printf("clone() or equals() failed: Two clones tested unequal\n");
 122   }
 123
 124   UnicodeString result1, result2;
 125   // getting and comparing the text within the iterators
 126   iter.getText(result1);
 127   test2->getText(result2);
 128   if (result1 != result2) {
 129     printf("getText() failed\n");
 130   }
 131
 132   cout << "Backwards: ";
 133   UChar c = iter.last();
 134   printUChar(c);
 135   int32_t i = iter.endIndex();
 136   i--; // already printed out the last char
 137   if (iter.startIndex() != 0 || iter.endIndex() != u_strlen(testText)) {
 138     printf("startIndex() or endIndex() failed\n");
 139   }
 140
 141   // Testing backward iteration over a range...
 142   do {
 143     if (c == CharacterIterator::DONE) {
 144       printf("Iterator reached end prematurely\n");
 145     }
 146     else if (c != testText[i]) {
 147       printf("Character mismatch at position %d\n" + i);
 148     }
 149     if (iter.current() != c) {
 150       printf("current() isn't working right\n");
 151     }
 152     if (iter.getIndex() != i) {
 153       printf("getIndex() isn't working right [%d should be %d]\n", iter.getIndex(), i);
 154     }
 155     if (c != CharacterIterator::DONE) {
 156       c = iter.previous();
 157       i--;
 158     }
 159     cout << "|";
 160     printUChar(c);
 161   } while (c != CharacterIterator::DONE);
 162
 163   cout << endl;
 164   delete test2;
 165 }
 166
 167 /* Creating and using text boundaries */
 168 int main( void )
 169 {
 170   cout << "ICU Iterator Sample Program (C++)\n\n";
 171
 172   Test t;
 173
 174   cout << endl;
 175   cout << "Test::TestUCharIter()" << endl;
 176   t.TestUChariter();
 177   cout << "-----" << endl;
 178   cout << "Test::TestStringchariter()" << endl;
 179   t.TestStringiter();
 180   cout << "-----" << endl;
 181
 182   return 0;
 183 }