icuSources/samples/citer/citer.cpp

   1 /*
   2 *******************************************************************************
   3 *
   4 *     Copyright (C) 2002-2011, 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 <unicode/brkiter.h>
  15 #include <unicode/ustdio.h>
  16 #include <stdlib.h>
  17
  18 static UFILE *out;
  19
  20 void printUnicodeString(const UnicodeString &s)
  21 {
  22     u_fprintf(out, "%S", &s);
  23 }
  24
  25 void printUChar(UChar32 ch)
  26 {
  27     if(ch < 127) {
  28         u_fprintf(out, "%C", (UChar) ch);
  29     } else if (ch == CharacterIterator::DONE) {
  30         u_fprintf(out, "[CharacterIterator::DONE = 0xFFFF]");
  31     } else {
  32         u_fprintf(out, "[%X]", ch);
  33     }
  34 }
  35
  36 class Test
  37 {
  38 public:
  39     void TestUChariter();
  40     void TestStringiter();
  41 };
  42
  43 void Test::TestUChariter() {
  44     const char testChars[] = "Now is the time for all good men to come "
  45         "to the aid of their country.";
  46
  47     UnicodeString testString(testChars,"");
  48     const UChar *testText = testString.getTerminatedBuffer();
  49
  50     UCharCharacterIterator iter(testText, u_strlen(testText));
  51     UCharCharacterIterator* test2 = (UCharCharacterIterator*)iter.clone();
  52
  53     u_fprintf(out, "testText = %s", testChars);
  54
  55     if (iter != *test2 ) {
  56         u_fprintf(out, "clone() or equals() failed: Two clones tested unequal\n");
  57     }
  58
  59     UnicodeString result1, result2;
  60     // getting and comparing the text within the iterators
  61     iter.getText(result1);
  62     test2->getText(result2);
  63     if (result1 != result2) {
  64         u_fprintf(out, "iter.getText() != clone.getText()\n");
  65     }
  66
  67     u_fprintf(out, "\n");
  68
  69     // Demonstrates seeking forward using the iterator.
  70     u_fprintf(out, "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         u_fprintf(out, "startIndex() or endIndex() failed\n");
  78     }
  79
  80
  81     // Testing forward iteration...
  82     do {
  83         if (c == CharacterIterator::DONE && i != u_strlen(testText)) {
  84             u_fprintf(out, "Iterator reached end prematurely");
  85         }
  86         else if (c != testText[i]) {
  87             u_fprintf(out, "Character mismatch at position %d\n" + i);
  88         }
  89         if (iter.current() != c) {
  90             u_fprintf(out, "current() isn't working right");
  91         }
  92         if (iter.getIndex() != i) {
  93             u_fprintf(out, "getIndex() isn't working right\n");
  94         }
  95         if (c != CharacterIterator::DONE) {
  96             c = iter.next();
  97             i++;
  98         }
  99
 100         u_fprintf(out, "|");
 101         printUChar(c);
 102
 103     } while (c != CharacterIterator::DONE);
 104
 105     delete test2;
 106     u_fprintf(out, "\n");
 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         u_fprintf(out, "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         u_fprintf(out, "getText() failed\n");
 130     }
 131
 132     u_fprintf(out, "Backwards: ");
 133
 134     UChar c = iter.last();
 135     int32_t i = iter.endIndex();
 136
 137     printUChar(c);
 138     i--; // already printed out the last char
 139
 140     if (iter.startIndex() != 0 || iter.endIndex() != u_strlen(testText)) {
 141         u_fprintf(out, "startIndex() or endIndex() failed\n");
 142     }
 143
 144     // Testing backward iteration over a range...
 145     do {
 146         if (c == CharacterIterator::DONE) {
 147             u_fprintf(out, "Iterator reached end prematurely\n");
 148         }
 149         else if (c != testText[i]) {
 150             u_fprintf(out, "Character mismatch at position %d\n", i);
 151         }
 152         if (iter.current() != c) {
 153             u_fprintf(out, "current() isn't working right\n");
 154         }
 155         if (iter.getIndex() != i) {
 156             u_fprintf(out, "getIndex() isn't working right [%d should be %d]\n", iter.getIndex(), i);
 157         }
 158         if (c != CharacterIterator::DONE) {
 159             c = iter.previous();
 160             i--;
 161         }
 162
 163         u_fprintf(out, "|");
 164         printUChar(c);
 165     } while (c != CharacterIterator::DONE);
 166
 167     u_fprintf(out, "\n");
 168     delete test2;
 169 }
 170
 171 /* Creating and using text boundaries */
 172 int main( void )
 173 {
 174     UErrorCode status = U_ZERO_ERROR;
 175
 176     out = u_finit(stdout, NULL, NULL);
 177
 178     u_fprintf(out, "ICU Iteration Sample Program (C++)\n\n");
 179
 180     Test t;
 181
 182     u_fprintf(out, "\n");
 183     u_fprintf(out, "Test::TestUCharIter()\n");
 184
 185     t.TestUChariter();
 186
 187     u_fprintf(out, "-----\n");
 188     u_fprintf(out, "Test::TestStringchariter()\n");
 189
 190     t.TestStringiter();
 191
 192     u_fprintf(out, "-----\n");
 193
 194     return 0;
 195 }