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#include "parser/TextFile.h"
#include "Color.h"
#include <string.h>
#include <stdlib.h>
#include <cstddef>
#include <functional>
#include <vector>
#include <string>
#include <iostream>
using namespace std;
namespace text_file_parser {
class FSM
{
public:
int cs;
char separator;
int act;
int top;
char *ts;
char *te;
int stack[256];
char buffer[8 * 1024];
int line;
int column;
int line_start;
int buffer_offset;
int64_t number_i64;
vector<int64_t> numbers_i64;
char *number_double_start;
vector<double> numbers_double;
function<void(const Color&)> addColor;
void handleNewline()
{
line++;
column = 0;
line_start = te - buffer;
}
int hexToInt(char hex)
{
if (hex >= '0' && hex <= '9') return hex - '0';
if (hex >= 'a' && hex <= 'f') return hex - 'a' + 10;
if (hex >= 'A' && hex <= 'F') return hex - 'A' + 10;
return 0;
}
int hexPairToInt(const char *hex_pair)
{
return hexToInt(hex_pair[0]) << 4 | hexToInt(hex_pair[1]);
}
void colorHexFull(bool with_hash_symbol)
{
Color color;
int start_index = with_hash_symbol ? 1 : 0;
color.rgb.red = hexPairToInt(ts + start_index) / 255.0;
color.rgb.green = hexPairToInt(ts + start_index + 2) / 255.0;
color.rgb.blue = hexPairToInt(ts + start_index + 4) / 255.0;
addColor(color);
}
void colorHexShort(bool with_hash_symbol)
{
Color color;
int start_index = with_hash_symbol ? 1 : 0;
color.rgb.red = hexToInt(ts[start_index + 0]) / 15.0;
color.rgb.green = hexToInt(ts[start_index + 1]) / 15.0;
color.rgb.blue = hexToInt(ts[start_index + 2]) / 15.0;
color.ma[3] = 0;
addColor(color);
}
void colorRgb()
{
Color color;
color.rgb.red = numbers_i64[0] / 255.0;
color.rgb.green = numbers_i64[1] / 255.0;
color.rgb.blue = numbers_i64[2] / 255.0;
color.ma[3] = 0;
numbers_i64.clear();
addColor(color);
}
void colorRgba()
{
Color color;
color.rgb.red = numbers_i64[0] / 255.0;
color.rgb.green = numbers_i64[1] / 255.0;
color.rgb.blue = numbers_i64[2] / 255.0;
color.ma[3] = numbers_double[0];
numbers_i64.clear();
numbers_double.clear();
addColor(color);
}
void colorValues()
{
Color color;
color.rgb.red = numbers_double[0];
color.rgb.green = numbers_double[1];
color.rgb.blue = numbers_double[2];
color.ma[3] = 0;
numbers_double.clear();
addColor(color);
}
void colorValueIntegers()
{
Color color;
color.rgb.red = numbers_i64[0] / 255.0;
color.rgb.green = numbers_i64[1] / 255.0;
color.rgb.blue = numbers_i64[2] / 255.0;
color.ma[3] = 0;
numbers_i64.clear();
addColor(color);
}
double parseDouble(const char *start, const char *end)
{
string v(start, end);
return stod(v.c_str());
}
void clearNumberStacks()
{
numbers_i64.clear();
numbers_double.clear();
}
};
%%{
machine text_file;
access fsm->;
number_i64 = digit+ >{ fsm->number_i64 = 0; } ${ fsm->number_i64 = fsm->number_i64 * 10 + (*p - '0'); };
sign = '-' | '+';
number_double = sign? (([0-9]+ '.' [0-9]+) | ('.' [0-9]+) | ([0-9]+)) ('e'i sign? digit+)?;
number = number_i64 %{ fsm->numbers_i64.push_back(fsm->number_i64); };
real_number = number_double >{ fsm->number_double_start = p; } %{ fsm->numbers_double.push_back(fsm->parseDouble(fsm->number_double_start, p)); };
newline = ('\n' | '\r\n') @{ fsm->handleNewline(); };
anything = any | newline;
multi_line_comment := anything* :>> '*/' @{ fgoto main; };
single_line_comment := (any - newline)* :>> ('\n' | '\r\n') @{ fgoto main; };
main := |*
( '#'[0-9a-fA-F]{6} ) { if (configuration.full_hex) fsm->colorHexFull(true); };
( '#'[0-9a-fA-F]{3} ) { if (configuration.short_hex) fsm->colorHexShort(true); };
( [0-9a-fA-F]{6} ) { if (configuration.full_hex) fsm->colorHexFull(false); };
( [0-9a-fA-F]{3} ) { if (configuration.short_hex) fsm->colorHexShort(false); };
( 'rgb'i '(' space* number space* ',' space* number space* ',' space* number space* ')' ) { if (configuration.css_rgb) fsm->colorRgb(); else fsm->clearNumberStacks(); };
( 'rgba'i '(' space* number space* ',' space* number space* ',' space* number space* ',' space* real_number space* ')' ) { if (configuration.css_rgba) fsm->colorRgba(); else fsm->clearNumberStacks(); };
( number space* ',' space* number space* ',' space* number ) { if (configuration.int_values) fsm->colorValueIntegers(); else fsm->clearNumberStacks(); };
( number space+ number space+ number ) { if (configuration.int_values) fsm->colorValueIntegers(); else fsm->clearNumberStacks(); };
( real_number space* ',' space* real_number space* ',' space* real_number ) { if (configuration.float_values) fsm->colorValues(); else fsm->clearNumberStacks(); };
( '//' ) { if (configuration.single_line_c_comments) fgoto single_line_comment; };
( '/*' ) { if (configuration.multi_line_c_comments) fgoto multi_line_comment; };
( '#' ) { if (configuration.single_line_hash_comments) fgoto single_line_comment; };
( space+ ) { };
( punct+ ) { };
( (any - (newline | space | punct | '//' | '/*'))+ ) { };
( newline ) { };
*|;
}%%
%% write data;
bool scanner(TextFile &text_file, const Configuration &configuration)
{
FSM fsm_struct;
FSM *fsm = &fsm_struct;
fsm->ts = 0;
fsm->te = 0;
fsm->line = 0;
fsm->line_start = 0;
fsm->column = 0;
fsm->buffer_offset = 0;
bool parse_error = false;
fsm->addColor = [&text_file](const Color &color){
Color c = color;
color_rgb_normalize(&c);
text_file.addColor(c);
};
%% write init;
int have = 0;
while (1){
char *p = fsm->buffer + have;
int space = sizeof(fsm->buffer) - have;
if (space == 0){
text_file.outOfMemory();
break;
}
char *eof = 0;
auto read_size = text_file.read(fsm->buffer + have, space);
char *pe = p + read_size;
if (read_size > 0){
if (read_size < sizeof(fsm->buffer)) eof = pe;
%% write exec;
if (fsm->cs == text_file_error) {
parse_error = true;
text_file.syntaxError(fsm->line, fsm->ts - fsm->buffer - fsm->line_start, fsm->line, fsm->te - fsm->buffer - fsm->line_start);
break;
}
if (fsm->ts == 0){
have = 0;
fsm->line_start -= sizeof(fsm->buffer);
}else{
have = pe - fsm->ts;
memmove(fsm->buffer, fsm->ts, have);
int buffer_movement = fsm->ts - fsm->buffer;
fsm->te -= buffer_movement;
fsm->line_start -= buffer_movement;
fsm->ts = fsm->buffer;
fsm->buffer_offset += fsm->ts - fsm->buffer;
}
}else{
break;
}
}
return parse_error == false;
}
}
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