Word
PresentationParser::parseRelator( const VectorOf<Chars>& names, Chars& errMesg )
{
genNames = names;
if ( curToken == INIT ) getToken();
if ( !atStartOfWord() ) {
parseError("Expected a word here");
errMesg = parseErrorMessage;
return Word();
} else {
Word u = parseWord( names, errMesg );
if ( errMesg.length() > 0 ) {
return Word();
}
if ( curToken == EQUALS ) {
getToken();
Word v = parseWord( names, errMesg );
if ( errMesg.length() > 0 ) {
return Word();
}
return ((Word)(u * v.inverse())).cyclicallyReduce();
} else return u.cyclicallyReduce();
}
}
void ScriptPreprocessor::parseDirective(std::string & str, size_t & i)
{
size_t begin = i;
// Skip the beginChar
if (++i >= str.size())
return;
std::string directive;
parseWord(str, i, directive);
if (directive == "if")
{
std::string expression;
parseExpression(str, i, expression);
if (!isDefined(expression))
{
disableBlock(str, i);
}
}
else
{
u32 lineNumber = retrieveLineNumber(str, i);
SN_ERROR("Unrecognized preprocessor directive '" << directive << "' in file '" << m_fileName << "' near line " << (lineNumber + 1));
return;
}
}
void THtmlParser::parseCloseTag()
{
++pos;
skipWhiteSpace();
QString tag = parseWord();
skipUpTo(">");
// Finds corresponding open element
int i = lastIndex();
while (i > 0) {
if (!tag.isEmpty() && at(i).tag.toLower() == tag.toLower() && !isElementClosed(i)) {
break;
}
i = at(i).parent;
}
if (i > 0) {
at(i).tagClosed = true;
} else {
// Can't find a corresponding open element
last().text += QLatin1String("</");
last().text += tag;
last().text += QLatin1Char('>');
return;
}
// Append a empty element for next entry
int p = at(i).parent;
appendNewElement(p);
}
SetOf<Word>
PresentationParser::parseWordSet( const VectorOf<Chars>& names, Chars& errMesg )
{
genNames = names;
if ( curToken == INIT ) getToken();
SetOf<Word> result;
if ( curToken == INIT ) getToken();
while ( atStartOfWord() ) {
Word w = parseWord( names, errMesg );
if ( errMesg.length() > 0 ) {
return result;
}
result.adjoinElement( w );
if ( curToken == COMMA ) {
getToken();
if ( !atStartOfWord() ) {
parseError("Expected a word here");
errMesg = parseErrorMessage;
return result;
}
}
}
return result;
}
static bool
parseCFG(HashedSet<HashedPtr<cfg_node> > &roots,
std::map<const cfg_node *, _getStoreCFGs::cfgflavour_store_t> &flavours,
const char *buf, const char **suffix)
{
std::map<named_string, cfg_node *> nodes;
while (1) {
if (!parseNodeDecl(nodes, flavours, buf, &buf))
break;
}
if (!parseEdgeDecl(nodes, buf, &buf))
return false;
if (!parseThisString("Roots:\n", buf, &buf))
return false;
while (!parseThisString("End of roots\n", buf, suffix)) {
if (!*buf)
return false;
named_string key;
if (!parseWord(&key, buf, &buf) ||
!parseThisChar('\n', buf, &buf))
return false;
if (!nodes.count(key))
return false;
roots.insert(nodes[key]);
}
return true;
}
static bool parseListEntry(ParseTreeNode* parentNode)
{
// Store current state for rolling back if we fail
int curToken = said_token;
int curTreePos = said_tree_pos;
ParseTreeNode* curRightChild = parentNode->right;
ParseTreeNode* newNode = said_branch_node(said_next_node(), 0, 0);
bool found;
if (said_tokens[said_token] == TOKEN_BRACKETO) {
said_token++;
found = parseExpr(newNode);
if (found) {
if (said_tokens[said_token] == TOKEN_BRACKETC) {
said_token++;
said_attach_subtree(parentNode, 0x152, 0x14c, newNode);
return true;
}
}
} else if (said_tokens[said_token] == TOKEN_PARENO) {
said_token++;
found = parseExpr(newNode);
if (found) {
if (said_tokens[said_token] == TOKEN_PARENC) {
said_token++;
said_attach_subtree(parentNode, 0x141, 0x14c, newNode);
return true;
}
}
} else if (parseWord(newNode)) {
said_attach_subtree(parentNode, 0x141, 0x153, newNode);
return true;
}
// Rollback
said_token = curToken;
said_tree_pos = curTreePos;
parentNode->right = curRightChild;
return false;
}
SetOf<Word>
PresentationParser::parseRelatorList(const VectorOf<Chars>& names,Chars& errMesg)
{
genNames = names;
SetOf<Word> result;
if ( curToken == INIT ) getToken();
while ( atStartOfWord() ) {
Word u = parseWord( names, errMesg );
if ( errMesg.length() > 0 ) {
return result;
}
if ( curToken != EQUALS )
result.adjoinElement( u.cyclicallyReduce() );
else {
while ( curToken == EQUALS ) {
getToken();
Word v = parseWord( names, errMesg );
if ( errMesg.length() > 0 ) {
return result;
}
result.adjoinElement( ((Word)(u * v.inverse())).cyclicallyReduce() );
}
}
if ( curToken == COMMA ) {
getToken();
if ( !atStartOfWord() ) {
parseError("Expected a word here");
errMesg = parseErrorMessage;
return result;
}
}
}
return result;
}
QList<QPair<QString, QString>> THtmlParser::parseAttributes()
{
QList<QPair<QString, QString>> attrs;
QString newline, key, value;
while (pos < txt.length()) {
int cr = 0, lf = 0;
skipWhiteSpace(&cr, &lf);
if (txt.at(pos) == QLatin1Char('>') || txt.at(pos) == QLatin1Char('/')) {
break;
}
// Newline
if (lf > 0) {
newline = (lf == cr) ? QLatin1String("\r\n") : QLatin1String("\n");
attrs << qMakePair(newline, QString()); // Appends the newline as a attribute
}
// Appends the key-value
key = parseWord();
if (key.isEmpty()) {
break;
}
skipWhiteSpace();
if (pos < txt.length() && txt.at(pos) == QLatin1Char('=')) {
pos++;
skipWhiteSpace();
value = parseWord();
} else {
value.clear();
}
attrs << qMakePair(key, value);
}
return attrs;
}
static bool
parseEdgeDecl(std::map<named_string, cfg_node *> &nodes,
const char *buf,
const char **suffix)
{
while (1) {
named_string start, end;
const char *p;
if (!parseWord(&start, buf, &p) ||
!parseThisString(" -> ", p, &p) ||
!parseWord(&end, p, &p) ||
!parseThisChar('\n', p, &buf))
break;
cfg_node *s = nodes[start];
cfg_node *e = nodes[end];
if (!s || !e)
return false;
s->successors.push_back(cfg_node::successor_t::branch(e));
}
*suffix = buf;
return true;
}
Text parseText(QString string, Text text) {
QStringList lines = string.split("\n");
Word word;
for(int j = 0; j < lines.length(); j++) {
QString line = lines.at(j);
if(line.length() == 0) { // ignore blank lines
continue;
}
word = parseWord(line);
if(word.getWord().length() != 0)
text.addWord(word);
}
return text;
}
void THtmlParser::parseTag()
{
// Close-tag
if (txt.at(pos) == QLatin1Char('/')) {
parseCloseTag();
return;
}
// p : parent index
int p = lastIndex();
while (p > 0) {
if (!at(p).tag.isEmpty() && !isElementClosed(p)) {
break;
}
p = at(p).parent;
}
THtmlElement &he = appendNewElement(p);
he.tag = parseWord();
// Parses the attributes
he.attributes.clear();
if (pos < txt.length()) {
he.attributes = parseAttributes();
}
// Tag closed?
if (txt.at(pos) == QLatin1Char('/')) {
const QRegExp rx("(\\s*/[^>]*)>"); // "/>" or "//-->"
int idx = rx.indexIn(txt, pos - 1);
if (idx == pos || idx == pos - 1) {
he.selfCloseMark = rx.cap(1);
pos = idx + rx.cap(1).length();
}
}
if (txt.at(pos) == QLatin1Char('>')) {
++pos;
} else {
// coding error
Q_ASSERT(0);
}
if (isElementClosed(lastIndex())) {
appendNewElement(he.parent);
}
}
void engToInt() {
char ch;
while((ch = getchar()) != EOF)
{
switch (ch)
{
case ' ':
break;
default:
if(isalpha(ch))
char word[20];
word[0] = ch;
return parseWord(word);
break;
}
}
}
static bool
parseNodeDecl(std::map<named_string, cfg_node *> &nodes,
std::map<const cfg_node *, _getStoreCFGs::cfgflavour_store_t> &cfgFlavours,
const char *buf,
const char **suffix)
{
named_string label;
_getStoreCFGs::cfgflavour_store_t flavour;
if (!parseWord(&label, buf, &buf) ||
!parseThisChar(' ', buf, &buf) ||
!parseCfgFlavour(&flavour, buf, &buf) ||
!parseThisChar('\n', buf, suffix))
return false;
if (nodes.count(label))
return false;
cfg_node *n = new cfg_node(label, CfgLabel::uninitialised());
nodes[label] = n;
cfgFlavours[n] = flavour;
return true;
}
void ScriptPreprocessor::disableBlock(std::string & str, size_t & i)
{
while (i < str.size())
{
i = str.find_first_of('\n');
if (c == m_beginChar)
{
std::string directive;
parseWord(str, i, directive);
if (directive == "endif")
{
break;
}
}
else if (c != '\n')
{
str[i] = ' ';
}
++i;
}
}
void Connection::parse(char *buffer, ssize_t len, ev::io &w) {
ssize_t buffer_pos = 0;
while (buffer_pos < len) {
if (!isspace(buffer[buffer_pos])) {
if (lastWordLen == BUFFER_SIZE - 1) {
lastWord[BUFFER_SIZE-1] = '\0';
log_file << "The word is too long: " << lastWord <<
buffer[buffer_pos] << std::endl;
badRequest(w);
return;
}
lastWord[lastWordLen++] = buffer[buffer_pos++];
} else {
if (lastWordLen) {
lastWord[lastWordLen] = '\0';
parseWord(w);
}
lastWordLen = 0;
if (buffer[buffer_pos] == '\n') {
buffer_pos++;
handleLine(w);
continue;
} else if (buffer[buffer_pos] == '\r') {
buffer_pos++;
if (buffer_pos < len && buffer[buffer_pos] == '\n') {
buffer_pos++;
}
handleLine(w);
continue;
} else {
while (buffer_pos < len &&
(buffer[buffer_pos] == ' ' || buffer[buffer_pos] == '\t')) {
buffer_pos++;
}
}
}
}
}
void Shell::exec(bool echo, const char* prompt) {
char cmd[LINE_SIZE];
while(true) {
*out << prompt;
for(int i=0; i<int(sizeof(cmd)-2); ++i) {
*in >> cmd[i];
// \r\n
if(cmd[i] == '\r' || cmd[i] == '\n') {
cmd[i] = 0;
break;
} else if(cmd[i] == 0) {
break;
}
//Backspace
if(cmd[i] == '\b') {
if(i!=0) {
*out << "\b \b";
cmd[i--] = 0;
}
cmd[i--] = 0;
//ctrl-c
} else if(cmd[i] == 3) {
*out << endl;
*out << prompt;
i = 0;
//Tab
} else if(cmd[i] == '\t') {
*out << endl;
cmd[i] = 0;
i--;
completion(cmd, i);
*out << prompt;
*out << cmd;
//ctrl-d
} else if(cmd[i] == 0x4) {
parseWord("reset");
--i;
//Escape
} else if(cmd[i] == 0x1b) {
*in >> cmd[i];
//Unhandled
if(cmd[i] != '[')
while(1);
*in >> cmd[i];
if(cmd[i] == 'A') {
history_pos--;
if(history_pos < 0)
history_pos = 3;
for(i=0;history[history_pos][i];++i) {
cmd[i] = history[history_pos][i];
}
cmd[i]=0;
*out << "\r\x1b[K";
*out << prompt;
*out << cmd;
}
--i;
} else if(echo) {
*out << cmd[i];
}
}
void ScriptPreprocessor::parseExpression(const std::string & str, size_t & i, std::string & out_expr)
{
parseWord(str, i, out_expr);
}
