C++ (Cpp) const_iterator Examples

Example #1

File: ligature_table.cpp Project: Using1174/tesseract

string LigatureTable::RemoveCustomLigatures(const string& str) const {
  string result;
  UNICHAR::const_iterator it_begin = UNICHAR::begin(str.c_str(), str.length());
  UNICHAR::const_iterator it_end = UNICHAR::end(str.c_str(), str.length());
  char tmp[5];
  int len;
  int norm_ind;
  for (UNICHAR::const_iterator it = it_begin; it != it_end; ++it) {
    len = it.get_utf8(tmp);
    tmp[len] = '\0';
    norm_ind = -1;
    for (int i = 0;
         UNICHARSET::kCustomLigatures[i][0] != nullptr && norm_ind < 0; ++i) {
      if (!strcmp(tmp, UNICHARSET::kCustomLigatures[i][1])) {
        norm_ind = i;
      }
    }
    if (norm_ind >= 0) {
      result += UNICHARSET::kCustomLigatures[norm_ind][0];
    } else {
      result += tmp;
    }
  }
  return result;
}

Example #2

File: normstrngs.cpp Project: jan-ruzicka/tesseract

unsigned int SpanUTF8NotWhitespace(const char* text) {
  int n_notwhite = 0;
  for (UNICHAR::const_iterator it = UNICHAR::begin(text, strlen(text));
       it != UNICHAR::end(text, strlen(text)); ++it) {
    if (IsWhitespace(*it)) break;
    n_notwhite += it.utf8_len();
  }
  return n_notwhite;
}

Example #3

File: ligature_table.cpp Project: Using1174/tesseract

string LigatureTable::RemoveLigatures(const string& str) const {
  string result;
  UNICHAR::const_iterator it_begin = UNICHAR::begin(str.c_str(), str.length());
  UNICHAR::const_iterator it_end = UNICHAR::end(str.c_str(), str.length());
  char tmp[5];
  int len;
  for (UNICHAR::const_iterator it = it_begin; it != it_end; ++it) {
    len = it.get_utf8(tmp);
    tmp[len] = '\0';
    LigHash::const_iterator lig_it = lig_to_norm_table_.find(tmp);
    if (lig_it != lig_to_norm_table_.end()) {
      result += lig_it->second;
    } else {
      result += tmp;
    }
  }
  return result;
}

Example #4

File: pango_font_info.cpp Project: 11110101/tess-two

bool PangoFontInfo::CoversUTF8Text(const char* utf8_text, int byte_length) const {
  PangoFont* font = ToPangoFont();
  PangoCoverage* coverage = pango_font_get_coverage(font, NULL);
  for (UNICHAR::const_iterator it = UNICHAR::begin(utf8_text, byte_length);
       it != UNICHAR::end(utf8_text, byte_length);
       ++it) {
    if (IsWhitespace(*it) || pango_is_zero_width(*it))
      continue;
    if (pango_coverage_get(coverage, *it) != PANGO_COVERAGE_EXACT) {
      char tmp[5];
      int len = it.get_utf8(tmp);
      tmp[len] = '\0';
      tlog(2, "'%s' (U+%x) not covered by font\n", tmp, *it);
      return false;
    }
  }
  return true;
}

Example #5

File: pango_font_info.cpp Project: 11110101/tess-two

int PangoFontInfo::DropUncoveredChars(string* utf8_text) const {
  PangoFont* font = ToPangoFont();
  PangoCoverage* coverage = pango_font_get_coverage(font, NULL);
  int num_dropped_chars = 0;
  // Maintain two iterators that point into the string. For space efficiency, we
  // will repeatedly copy one covered UTF8 character from one to the other, and
  // at the end resize the string to the right length.
  char* out = const_cast<char*>(utf8_text->c_str());
  const UNICHAR::const_iterator it_begin =
      UNICHAR::begin(utf8_text->c_str(), utf8_text->length());
  const UNICHAR::const_iterator it_end =
      UNICHAR::end(utf8_text->c_str(), utf8_text->length());
  for (UNICHAR::const_iterator it = it_begin; it != it_end; ++it) {
    // Skip bad utf-8.
    if (!it.is_legal())
      continue;  // One suitable error message will still be issued.
    if (!IsWhitespace(*it) && !pango_is_zero_width(*it) &&
        pango_coverage_get(coverage, *it) != PANGO_COVERAGE_EXACT) {
      if (TLOG_IS_ON(2)) {
        char tmp[5];
        int len = it.get_utf8(tmp);
        tmp[len] = '\0';
        tlog(2, "'%s' (U+%x) not covered by font\n", tmp, *it);
      }
      ++num_dropped_chars;
      continue;
    }
    strncpy(out, it.utf8_data(), it.utf8_len());
    out += it.utf8_len();
  }
  utf8_text->resize(out - utf8_text->c_str());
  return num_dropped_chars;
}