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CodeParser.cpp

Language: C++
Last Modified: 2022-10-15 12:12:06 AM UTC
File Size: 5817 bytes
http://www.penguinstew.ca/example/CodeFormater/CodeParser.cpp
#include <iostream>
#include <string>
#include <sstream>
#include "CodeParser.h"
#include "FormatHelper.h"
#include "PhpHelper.h"
#define BUFFER_LENGTH 1024
CodeParser::CodeParser()
{
}
std::vector<Line> CodeParser::ParseLines(std::string filename, std::string typeExt, int startLine, int endLine)
{
TypeCache cache;
Type type = cache.LoadLanguage(typeExt);
std::vector<Lang> currentLangs = std::vector<Lang>();
std::vector<State> currentStates = std::vector<State>();
auto baseLang = type.FindBaseType();
if (baseLang != NULL)
{
type = cache.LoadLanguage(baseLang->GetType());
}
Lang currentLang = Lang(type.GetExt());
currentLangs.push_back(currentLang);
State currentState = State();
currentStates.push_back(currentState);
FILE* f;
fopen_s(&f, filename.c_str(), "r");
if (f == NULL)
{
std::cout << "Error opening input file: " << filename << std::endl;
return std::vector<Line>();
}
int lineNumber = 1;
std::vector<Line> lines = std::vector<Line>();
char lineBuffer[BUFFER_LENGTH];
while (fgets(lineBuffer, BUFFER_LENGTH, f))
{
if (lineNumber > endLine)
{
break;
}
std::string line = std::string(lineBuffer);
std::stringstream lineStream;
if (currentState.GetId() != 0)
{
currentState.PrintRestart(lineStream);
}
char c = '\0';
char preC = '\0';
for (unsigned int i = 0; i < line.size(); i++)
{
char testC = line.at(i);
if (testC < 0)
{
continue;
}
if (i > 0)
{
preC = line.at(i-1);
if (preC < 0)
{
preC = '\0';
}
}
c = testC;
Lang* startLang = cache.FindStartLang(line, i, TypeIdPair(currentLang.GetType(), currentState.GetId()));
if (startLang != NULL)
{
currentLang = *startLang;
currentLangs.push_back(currentLang);
if (currentState.GetId() != 0)
{
currentState.PrintClose(lineStream);
}
//Add new base state to array
currentState = State();
currentStates.push_back(currentState);
type = cache.LoadLanguage(currentLang.GetType());
int startLength = currentLang.PrintStart(lineStream);
if (startLength > 0)
{
i += startLength - 1;
continue;
}
}
if (!currentLang.IsBaseType()
&& currentLang.IsEnd(line, i, TypeIdPair(currentLang.GetType(), currentState.GetId())))
{
PopTypeStates(currentStates);
currentState = currentStates.back();
currentLangs.pop_back();
Lang prevLang = currentLang;
currentLang = currentLangs.back();
type = cache.LoadLanguage(currentLang.GetType());
int endLength = prevLang.PrintEnd(lineStream);
if (currentState.GetId() != 0)
{
currentState.PrintRestart(lineStream);
}
if (endLength > 0)
{
i += endLength - 1;
continue;
}
}
if (currentState.GetAllowNested())
{
State* startState = type.FindStarState(line, i, TypeIdPair(currentLang.GetType(), currentState.GetId()));
if (startState != NULL)
{
if (currentState.GetId() != 0)
{
currentState.PrintClose(lineStream);
}
//Add state to array
currentStates.push_back(*startState);
currentState = *startState;
int startLength = currentState.PrintStart(lineStream, line, i);
if (currentState.IsEndAfterWord())
{
currentStates.pop_back();
currentState = currentStates.back();
if (currentState.GetId() != 0)
{
currentState.PrintRestart(lineStream);
}
}
i += startLength - 1;
continue;
}
}
int wordLength = type.FindAndPrintSetWord(lineStream, line, i, TypeIdPair(currentLang.GetType(), currentState.GetId()), preC, currentState);
if (wordLength > 0)
{
//Update index and counteract the loop auto Increment
i += wordLength - 1;
continue;
}
//If not in base state test for end
if (currentState.GetId() != 0 &&
currentState.IsEnd(line, i, TypeIdPair(currentLang.GetType(), currentState.GetId()), type.GetEscapeChar()))
{
int endLength = currentState.PrintEnd(lineStream);
//Update index and counteract the loop auto Increment
i += endLength - 1;
currentStates.pop_back();
currentState = currentStates.back();
if (currentState.GetId() != 0)
{
currentState.PrintRestart(lineStream);
}
continue;
}
if (currentState.GetId() == 0 && !isalnum(preC))
{
int numberLength = type.FindAndPrintNumber(lineStream, line, i);
if (numberLength > 0)
{
i += numberLength - 1;
continue;
}
}
//If not printed already, just display character
if (c != '\r' && c != '\n')
{
std::string printChar = "";
if (c == '\t')
{
printChar = " ";
}
else
{
printChar = PhpHelper::htmlspecialchars(std::string(1, c));
}
lineStream << printChar;
}
}
if (currentState.GetId() != 0)
{
currentState.PrintClose(lineStream);
}
//Loop through current states
for (unsigned int i = 0; i < currentStates.size(); i++) {
State state = currentStates.at(i);
//If state ends at line remove it from the array
if (state.IsEndAfterLine())
{
currentStates.pop_back();
currentState = currentStates.back();
}
}
if (lineNumber >= startLine)
{
Line l = Line(lineNumber, lineStream.str());
lines.push_back(l);
}
lineNumber++;
}
return lines;
}
void CodeParser::PopTypeStates(std::vector<State>& currentStates)
{
for (unsigned int j = currentStates.size() - 1; j >= 0; j--)
{
State state = currentStates.at(j);
currentStates.pop_back();
if (state.GetId() == 0)
break;
}
}
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