ossimKeywordlist::KeywordlistParseState ossimKeywordlist::readComments(ossimString& sequence, std::istream& in)const
{
KeywordlistParseState result = KeywordlistParseState_FAIL;
char c = (char)in.peek();
if(c == '/')
{
sequence += (char)in.get();
c = in.peek();
if(c == '/')
{
result = KeywordlistParseState_OK;
sequence += c;
while(!in.bad()&&!in.eof())
{
c = (char)in.get();
if(!isValidKeywordlistCharacter(c))
{
result = KeywordlistParseState_BAD_STREAM;
break;
}
if((c == '\n')||
(c == '\r'))
{
break;
}
sequence += c;
}
}
}
return result;
}
ossimKeywordlist::KeywordlistParseState ossimKeywordlist::readValue(ossimString& sequence, std::istream& in)const
{
KeywordlistParseState result = KeywordlistParseState_OK;
ossim_int32 quoteCount = 0; // mark as not set
// make sure we check for a blank value
while(!in.eof()&&!in.bad())
{
if(in.peek() == ' '||
in.peek() == '\t')
{
in.ignore();
}
else if(in.peek() == '\n' ||
in.peek() == '\r')
{
in.ignore();
return result;
}
else
{
break;
}
}
// The ifstream object will end in 'ÿ' (character 255 or -1) if the end-of-file indicator
// will not be set(e.g \n). In this case, end-of-file conditions would never be detected.
// add EOF (which is actually the integer -1 or 255) check here.
// Reference link http://www.cplusplus.com/forum/general/33821/
while(!in.eof()&&!in.bad()&&in.peek()!=EOF)
{
ossim_uint8 c = in.get();
if(isValidKeywordlistCharacter(c))
{
if(((c == '\n'||c=='\r') && !quoteCount) || in.eof())
{
break;
}
sequence += (char)c;
if(sequence.size() >2)
{
if(quoteCount < 1)
{
// if quoted
if(ossimString(sequence.begin(), sequence.begin()+3) == "\"\"\"")
{
++quoteCount;
}
}
else // check for ending quotes
{
if(ossimString(sequence.begin() + sequence.size()-3, sequence.end()) == "\"\"\"")
{
++quoteCount;
}
}
}
if(quoteCount > 1)
{
sequence = ossimString(sequence.begin()+3, sequence.begin()+(sequence.size()-3));
break;
}
}
else
{
result = KeywordlistParseState_BAD_STREAM;
break;
}
}
return result;
}
ossimKeywordlist::KeywordlistParseState ossimKeywordlist::readKey(ossimString& sequence, std::istream& in)const
{
KeywordlistParseState result = KeywordlistParseState_FAIL;
if(!sequence.empty())
{
if(*(sequence.begin()+(sequence.size()-1)) == m_delimiter)
{
sequence = ossimString(sequence.begin(), sequence.begin() + (sequence.size()-1));
return KeywordlistParseState_OK;
}
}
// not a comment so read til key delimeter
while(!in.eof() && in.good())
{
ossim_uint8 c = in.get();
if( isValidKeywordlistCharacter(c) )
{
if ( (c == '\n') || (c == '\r') )
{
// Hit end of line with no delimiter.
if ( in.peek() == EOF )
{
//---
// Allowing on last line only.
// Note the empty key will trigger parseStream to return true.
//---
sequence.clear();
result = KeywordlistParseState_OK;
break;
}
else // Line with no delimiter.
{
// mal formed input stream for keyword list specification
result = KeywordlistParseState_BAD_STREAM;
break;
}
}
else if(c != m_delimiter)
{
sequence += (char)c;
}
else // at m_delimiter
{
result = KeywordlistParseState_OK;
sequence = sequence.trim();
break;
}
}
else
{
// mal formed input stream for keyword list specification
result = KeywordlistParseState_BAD_STREAM;
break;
}
}
// we never found a delimeter so we are mal formed
if(!sequence.empty()&&(result!=KeywordlistParseState_OK))
{
result = KeywordlistParseState_BAD_STREAM;
}
return result;
}
ossimKeywordlist::KeywordlistParseState ossimKeywordlist::readValue(ossimString& sequence, std::istream& in)const
{
KeywordlistParseState result = KeywordlistParseState_OK;
ossim_int32 quoteCount = 0; // mark as not set
// make sure we check for a blank value
while(!in.eof()&&!in.bad())
{
if(in.peek() == ' '||
in.peek() == '\t')
{
in.ignore();
}
else if(in.peek() == '\n' ||
in.peek() == '\r')
{
in.ignore();
return result;
}
else
{
break;
}
}
// The ifstream object will end in 'ÿ' (character 255 or -1) if the end-of-file indicator
// will not be set(e.g \n). In this case, end-of-file conditions would never be detected.
// add EOF (which is actually the integer -1 or 255) check here.
// Reference link http://www.cplusplus.com/forum/general/33821/
while(!in.eof()&&!in.bad()&&in.peek()!=EOF)
{
ossim_uint8 c = in.get();
if(isValidKeywordlistCharacter(c))
{
if(((c == '\n'||c=='\r') && !quoteCount) || in.eof())
{
break;
}
sequence += (char)c;
if(sequence.size() >2)
{
if(quoteCount < 1)
{
//---
// If string has leading tripple quoted bump the "quoteCount" so
// we start skipping line breaks, preserving paragraph style strings.
//---
if(ossimString(sequence.begin(), sequence.begin()+3) == "\"\"\"")
{
++quoteCount;
}
}
else // check for ending quotes
{
if(ossimString(sequence.begin() + sequence.size()-3, sequence.end()) == "\"\"\"")
{
++quoteCount;
}
}
}
if(quoteCount > 1)
{
//---
// Have leading and trailing tripple quotes. Some tiff writers, e.g. Space
// Imaging are using four quotes. Below code strips all quotes from each end.
//---
char quote = '"';
std::string::size_type startPos = sequence.string().find_first_not_of(quote);
std::string::size_type stopPos = sequence.string().find_last_not_of(quote);
if ( ( startPos != std::string::npos ) && (stopPos != std::string::npos) )
{
sequence = sequence.string().substr( startPos, stopPos-startPos+1 );
}
break;
}
}
else
{
result = KeywordlistParseState_BAD_STREAM;
break;
}
}
return result;
}
