static bool extractEnd(std::istringstream &strm, std::string &end)
{
std::stringbuf temp;
strm.get(temp);
end = temp.str();
return !strm.fail();
}
/// directly sends the quoted text to oss
/// and returns if a quote was found
/// empties the given buffer in to oss if one is given
/// works only if a quote char is found where the iss cursor is.
bool JLDIO::skipOverQuotes(std::ostringstream& oss, std::istringstream& iss, std::list<char> *bufferToEmpty)
{
char charBuffer = iss.peek();
if(charBuffer == '\'' || charBuffer == '\"')
{
if(bufferToEmpty && !bufferToEmpty->empty())
{
oss << listToString(*bufferToEmpty);
bufferToEmpty->clear();
}
// std::cout<<"Skipping: ";
char matchedChar = charBuffer;
iss.get(charBuffer);
assert(matchedChar == charBuffer);
do
{
oss << charBuffer;
// std::cout<<charBuffer;
} while(iss.get(charBuffer) && charBuffer != matchedChar);
if(iss.good())
oss << charBuffer;
// std::cout<<charBuffer<<"\n";
return true;
}
return false;
}
void factor( std::istringstream &ss, char &lookahead ) {
if ( isDigit {}( lookahead ) ){
int value = 0;
do {
value = value * 10 + ToDigit {}( lookahead );
lookahead = ss.get();
} while ( !ss.eof() && isDigit {} ( lookahead ) );
print ( value );
} else if ( lookahead == '(' ) {
match ( ss, lookahead, '(' );
expr( ss, lookahead );
if( lookahead != ')' ){
throw fail { "Expected a closing parenthesis before end of line." };
}
match ( ss, lookahead, ')' );
} else if ( isWhiteSpace {} ( lookahead ) ) {
for (;; lookahead = ss.get() ){
if( isWhiteSpace {}( lookahead ) ) continue;
else break;
}
} else {
std::cerr << "Syntax Error: expecting a digit, got '" << lookahead << "' instead." << std::endl;
abort();
}
}
bool ossimWkt::parseObject( std::istringstream& is,
const std::string& prefix,
const std::string& object,
ossimKeywordlist& kwl )
{
bool result = false;
result = parseName( is, prefix, object, kwl );
if ( result && is.good() )
{
char c;
ossim_uint32 myObjectIndex = 0;
ossim_uint32 paramIndex = 0;
while ( is.good() )
{
is.get(c);
if ( is.good() )
{
if ( c == ',' )
{
parseParam( is, prefix, object, myObjectIndex, paramIndex, kwl );
}
else if ( (c == ']') || (c == ')') )
{
break; // End of object.
}
}
}
}
return result;
}
bool ossimWkt::parseName( std::istringstream& is,
const std::string& prefix,
const std::string& object,
ossimKeywordlist& kwl )
{
bool result = false;
char c;
std::string name;
// Find the first quote:
while ( is.good() )
{
is.get(c);
if ( is.good() )
{
if ( c == '"' )
{
break;
}
}
}
// Get the name:
while ( is.good() )
{
is.get(c);
if ( is.good() )
{
if ( c != '"' )
{
name.push_back(c);
}
else
{
break; // End quote:
}
}
}
if ( name.size() )
{
// Add to keyword list.
std::string key;
if ( prefix.size() )
{
key += prefix;
}
key += object;
key += ".name";
kwl.addPair( key, name );
result = true;
}
return result;
}
void match ( std::istringstream &ss, char &lookahead, const char &currToken ) noexcept
{
if ( lookahead == currToken ){
lookahead = ss.get();
if( isWhiteSpace {}( lookahead ) ){
for(;; lookahead = ss.get() ){
if(isWhiteSpace {}( lookahead ) ) continue;
else break;
}
}
}
//otherwise we have an epsilon production
}
void LoadArray(std::istringstream &buf, pnlVector<Type> &array, char delim = ' ')
{
char ch;
int ich;
Type val;
buf >> ch;
ASSERT(ch == '[' || !buf.good());
array.reserve(16);
array.resize(0);
for(;buf.good();)
{
do
{
ich = buf.peek();
if(ich == ']')
{
buf >> ch;
return;
}
else if(ich == delim || (delim == ' ' && isspace(ich)))
{
buf.get(ch);
}
} while(buf.good() && (ich == delim || (delim == ' ' && isspace(ich))));
if(!buf.good())
{
break;
}
buf >> val;
array.push_back(val);
}
/**
* Read from input title and insert spaces into the title vector
* @param iss input stream
* @param word space word to insert
* @param title vector where to store the words
*/
void insert_spaces( std::istringstream& iss, std::string& word, std::vector<std::string>& title ){
while( iss.peek() == ' ' ){
iss.get();
word += ' ';
}
if ( !word.empty() )
title.push_back( std::move(word) );
}
/// moves the iss's cursor to the next non-WS char
bool JLDIO::ignoreWhiteSpace(std::istringstream& iss)
{
char charBuffer = iss.peek();
bool output = false;
while(std::isspace(charBuffer))
{
iss.get(charBuffer);
charBuffer = iss.peek();
output = true;
}
return output;
}
void skipCharacter(std::istringstream& is, char char_to_skip)
{
for (;;) {
int c = is.get();
if ( !is.good() ) {
break;
} else {
if (c != char_to_skip) {
is.unget();
break;
}
}
}
}
bool JLDIO::moreItems(std::istringstream& iss, char delim)
{
char charBuffer;
ignoreWhiteSpace(iss);
if(iss.peek() == ',')
{
iss.get(charBuffer);
return true;
}
else if(iss.peek() != delim)
{
std::cout<<"Expected '"<<delim<<"' but found '"<<(char)iss.peek()<<"'\n";
assert(0 && "Unexpected char");
}
return false;
}
void rest_2( std::istringstream &ss, char &lookahead )
{
while( !ss.eof() ){
char tempToken = lookahead;
if( lookahead == '*' ) {
match( ss, lookahead, '*' );
factor( ss, lookahead );
print( tempToken );
} else if ( lookahead == '/' ) {
match ( ss, lookahead, '/' );
factor( ss, lookahead );
print( '/' );
} else if ( isWhiteSpace {}( lookahead ) ) {
for(;; lookahead = ss.get() ){
if( isWhiteSpace {}( lookahead ) ) continue;
else break;
}
} else {
break;
}
}
}
void rest( std::istringstream &ss, char &lookahead )
{
while( !ss.eof() ) {
char tempToken = lookahead;
if ( lookahead == '+' ) {
match( ss, lookahead, '+' );
term ( ss, lookahead );
print( tempToken );
rest( ss, lookahead );
} else if ( lookahead == '-' ) {
match( ss, lookahead, '-' );
term( ss, lookahead );
print( tempToken );
rest( ss, lookahead );
} else if ( isWhiteSpace {} ( lookahead ) ) {
for(;; lookahead = ss.get() ){
if( isWhiteSpace {}( lookahead ) ) continue;
else break;
}
} else {
break; //we have an epsilon production
}
}
}
bool ossimWkt::parseWktGroup( std::istringstream& is, ossimKeywordlist& kwl )
{
bool result = false;
if ( is.good() )
{
char c;
// Get the wkt group name up to '[', e.g. "PROJCS[".
std::string prefix = "";
std::string object;
// std::string v;
while ( is.good() )
{
is.get(c);
if ( is.good() )
{
// Look for parens or square brackets.
if ( (c != '[') && (c != '(') )
{
object.push_back(c);
}
else
{
result = parseObject( is, prefix, object, kwl );
}
}
else
{
break;
}
}
}
return result;
}
bool HttpResponse::parse_header_content(std::istringstream &istr)
{
static const int eof = std::char_traits<char>::eof();
int ch = istr.get();
while (ch != eof && ch != '\r' && ch != '\n')
{
std::string name;
std::string value;
while (ch != eof && ch != ':' && name.length() < MAX_NAME_LENGTH)
{
name += ch;
ch = istr.get();
}
if (ch != ':') return false;
if (ch != eof) ch = istr.get(); // ':'
while (isspace(ch)) ch = istr.get();
while (ch != eof && ch != '\r' && ch != '\n' && value.length() < MAX_VALUE_LENGTH)
{
value += ch;
ch = istr.get();
}
if (ch == '\r') ch = istr.get();
if (ch == '\n')
{
ch = istr.get();
}else if(ch != eof)
{
return false;
}
while (ch == ' ' || ch == '\t') // folding
{
while (ch != eof && ch != '\r' && ch != '\n' && value.length() < MAX_VALUE_LENGTH)
{
value += ch;
ch = istr.get();
}
if (ch == '\r')
{
ch = istr.get();
}
if (ch == '\n')
{
ch = istr.get();
}else if (ch != eof)
{
return false;
}
}
m_nv_map[name] = value;
}
istr.putback(ch);
return true;
}
bool ossimWkt::parseParam( std::istringstream& is,
const std::string& prefix,
const std::string& object,
ossim_uint32& objectIndex,
ossim_uint32& paramIndex,
ossimKeywordlist& kwl )
{
bool result = false;
char c;
std::string name;
// Get the name:
while ( is.good() )
{
int i = is.peek(); // Don't gobble the trailing comma or bracket.
if ( (i == ',') || (i == ']') || (i == ')') )
{
// End of param.
if ( name.size() )
{
// Add to keyword list.
std::string key;
if ( prefix.size() )
{
key += prefix;
}
key += object;
key += ".param";
key += ossimString::toString(paramIndex).string();
kwl.addPair( key, name );
name = "";
++paramIndex;
result = true;
}
break; // Next param or at end of object.
}
is.get(c);
if ( is.good() )
{
// Look nexted object.
if ( (c == '[') || (c == '(') )
{
std::string myPrefix;
if ( prefix.size() )
{
myPrefix += prefix;
}
myPrefix += object;
myPrefix += ".";
//---
// Special hack for duplicated keyword "PARAMETER"
//---
if ( name == "PARAMETER" )
{
name += ossimString::toString(objectIndex).string();
++objectIndex;
}
result = parseObject( is, myPrefix, name, kwl );
name = "";
}
else
{
name.push_back(c);
}
}
}
return result;
}
bool at_end()
{
int c = stream.get();
stream.unget();
return c == EOF;
}
int getc()
{
return stream.get();
}
bool HttpResponse::Parse(std::istringstream &istr)
{
static const int eof = std::char_traits<char>::eof();
std::string version;
std::string status;
std::string reason;
int ch = istr.get();
while (isspace(ch))
{
ch = istr.get();
}
if (ch == eof) return false;
while (!isspace(ch) && ch != eof && version.length() < MAX_VERSION_LENGTH)
{
version += (char) ch;
ch = istr.get();
}
if (!isspace(ch)) return false;
while(isspace(ch))
{
ch = istr.get();
}
while (!isspace(ch) && ch != eof && status.length() < MAX_STATUS_LENGTH)
{
status += (char) ch;
ch = istr.get();
}
if (!isspace(ch)) return false;
while (isspace(ch)) ch = istr.get();
while (ch != '\r' && ch != '\n' && ch != eof && reason.length() < MAX_REASON_LENGTH)
{
reason += (char) ch;
ch = istr.get();
}
if (!isspace(ch)) return false;
if (ch == '\r') ch = istr.get();
if(!parse_header_content(istr)) return false;
ch = istr.get();
while (ch != '\n' && ch != eof)
{
ch = istr.get();
}
m_version = version;
m_status = status;
m_reason = reason;
return true;
}
/// gets the next char from iss and places it in output
/// bypasses characters in quotes
/// empties the given buffer in to oss before hand if possible
/// returns false upon failure (i.e. returns iss.good())
bool JLDIO::getNextChar(char& output, std::ostringstream& oss, std::istringstream& iss, std::list<char> *bufferToEmpty)
{
skipOverQuotes(oss, iss, bufferToEmpty);
iss.get(output);
return iss.good();
}