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#include <iostream>
#include <string>
#include <cctype>
#include <unistd.h>
#include <sys/types.h>
#include <unordered_map>
#include <set>
#include "Token.h"
std::string operatorChars = "+-*/%=<>&|^~";
std::string parenthesisChars = "[]{}(),";
std::set<std::string> operators = {
"+",
"-",
"*",
"/",
"//",
"%",
"**",
">",
"<",
">=",
"<=",
"==",
"!=",
"&",
"|",
"~",
"^",
">>",
"<<",
"=",
"+=",
"-=",
"*=",
"/=",
"%=",
"**=",
"//=",
"^=",
"&=",
"|=",
">>=",
"<<="
};
using namespace std;
FILE* in;
FILE* out;
bool isNumber(char c){
return c >= '0' && c <= '9';
}
bool notValidNumber(char c){
return !(isNumber(c) || c == '.');
}
bool isQuote(char c){
return c == '\'' || c == '"';
}
bool isLastQuote(char firstQuote, char previousChar, char currentChar){
return firstQuote == currentChar && previousChar != '\\';
}
bool isOperator(char c){
return operatorChars.find(c) != std::string::npos;
}
bool isParenthesis(char c){
return parenthesisChars.find(c) != std::string::npos;
}
bool isValidIdentifierChar(char c){
return !(isOperator(c) || isParenthesis(c) || isQuote(c) || c == '\n' || isblank(c) || c == ',');
}
bool isValidOperator(std::string word){
std::set<std::string>::iterator iter;
iter = operators.find(word);
return iter != operators.end();
}
std::string readFormat(){
std::string word = "{";
char c;
while((c = fgetc(in)) != EOF && c != '}'){
word += c;
}
word += '}';
return word;
}
std::string readNumber(){
fseek(in, -1, SEEK_CUR);
std::string word;
char c;
int dotCount = 0;
while((c = fgetc(in)) != EOF && !notValidNumber(c)){
//printf("%c", c);
if(notValidNumber(c)){
return "";
} else if(c == '.'){
dotCount++;
if(dotCount >= 2){
return "";
}
}
word += c;
}
if(notValidNumber(c)){
fseek(in, -1, SEEK_CUR);
}
return word;
}
std::string readString(char firstQuote){
std::string word = "";
word += firstQuote;
char c;
char previousChar = ' ';
while((c = fgetc(in)) != EOF && !isLastQuote(firstQuote, previousChar, c)){
if( c == '{'){
fprintf(out, "<span class=\"string\">%s</span>", word.c_str());
word = readFormat();
fprintf(out, "<span class=\"formatString\">%s</span>", word.c_str());
word = "";
} else {
word += c;
}
previousChar = c;
}
word += firstQuote;
fprintf(out, "<span class=\"string\">%s</span>", word.c_str());
return word;
}
std::string readOperator(){
fseek(in, -1, SEEK_CUR);
std::string word;
char c;
while((c = fgetc(in)) != EOF && isOperator(c)){
word += c;
}
if(!isOperator(c)){
fseek(in, -1, SEEK_CUR);
}
return word;
}
std::string readWord(){
fseek(in, -1, SEEK_CUR);
std::string word;
char c;
while((c = fgetc(in)) != EOF && isValidIdentifierChar(c)){
word += c;
}
if(!isValidIdentifierChar(c)){
fseek(in, -1, SEEK_CUR);
}
return word;
}
void lexer(){
char c;
bool validSyntaxis = 1;
std::string word;
std::unordered_map<std::string, TokenType>::const_iterator iter;
while((c = fgetc(in)) != EOF){
if(isQuote(c)){
word = readString(c);
//fprintf(out, "<span class=\"string\">%s</span>", word.c_str());
continue;
}
if(isNumber(c)){
word = readNumber();
fprintf(out, "<span class=\"number\">%s</span>", word.c_str());
continue;
}
if(isOperator(c)){
word = readOperator();
if(isValidOperator(word)){
validSyntaxis = 0;
}
fprintf(out, "<span class=\"operator\">%s</span>", word.c_str());
// trqbwa da se proweti dali e korektno
// t.e. da e w nqkyw set ili hash
continue;
}
if(isParenthesis(c)){
fprintf(out, "%c", c);
continue;
}
if(isblank(c) || c == '\n'){
fprintf(out, "%c", c);
continue;
}
word = readWord();
iter = keywords.find(word);
if(iter == keywords.end()){
fprintf(out, "%s", word.c_str());
} else {
fprintf(out, "<span class=\"keyword\">%s</span>", word.c_str());
}
}
}
int main(int argc, const char* argv[])
{
++argv, --argc; /* skip over program name */
if ( argc > 0 )
in = fopen( argv[0], "r" );
else
in = stdin;
out = fopen("index.html", "w");
fputs(
"<!doctype>"
"<html>"
"<head>"
" <title>program.py</title>"
" <style>"
" .keyword {"
" color: purple;"
" }"
" .number {"
" color: orange;"
" }"
" .string {"
" color: green;"
" }"
" .operator {"
" font-style: bold;"
" }"
" .formatString {"
" color: red;"
" }"
" </style>"
"</head>"
"<body>"
" <pre class=\"code\">",
out);
lexer();
fputs("</pre></body></html>", out);
fclose(in);
fclose(out);
return 0;
}
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