/*************************************************************************
Return the index of the first character of the word after the word
at 'idx'.
*************************************************************************/
String32::size_type TextUtils::getNextWordStartIdx(const String32& str, String32::size_type idx)
{
String32::size_type str_len = str.length();
// do some checks for simple cases
if ((idx >= str_len) || (str_len == 0))
{
return str_len;
}
// is character at 'idx' alphanumeric
if (String32::npos != DefaultAlphanumerical.find(str[idx]))
{
// find position of next character that is not alphanumeric
idx = str.find_first_not_of(DefaultAlphanumerical, idx);
}
// is character also not whitespace (therefore a symbol)
else if (String32::npos == DefaultWhitespace.find(str[idx]))
{
// find index of next character that is either alphanumeric or whitespace
idx = str.find_first_of(DefaultAlphanumerical + DefaultWhitespace, idx);
}
// check result at this stage.
if (String32::npos == idx)
{
idx = str_len;
}
else
{
// if character at 'idx' is whitespace
if (String32::npos != DefaultWhitespace.find(str[idx]))
{
// find next character that is not whitespace
idx = str.find_first_not_of(DefaultWhitespace, idx);
}
if (String32::npos == idx)
{
idx = str_len;
}
}
return idx;
}
/*************************************************************************
Trim all characters from the set specified in \a chars from the
begining of 'str'.
*************************************************************************/
void TextUtils::trimLeadingChars(String32& str, const String32& chars)
{
String32::size_type idx = str.find_first_not_of(chars);
if (idx != String32::npos)
{
str.erase(0, idx);
}
else
{
str.erase();
}
}
/*************************************************************************
return a String32 containing the the next word in a String32.
*************************************************************************/
String32 TextUtils::getNextWord(const String32& str, String32::size_type start_idx, const String32& delimiters)
{
String32::size_type word_start = str.find_first_not_of(delimiters, start_idx);
if (word_start == String32::npos)
{
word_start = start_idx;
}
//String32::size_type word_end = str.find_first_of(delimiters, word_start);
//if (word_end == String32::npos)
//{
// word_end = str.length();
//}
//return str.substr(start_idx, (word_end - start_idx));
return str.substr(start_idx, 1);
}