/*
* Copyright 2010, Haiku. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
*               Ithamar R. Adema <ithamar.adema@team-embedded.nl>
*/


#include "PPDParser.h"

#include <File.h>
#include <Path.h>


PPDParser::PPDParser(BFile& file)
{
        InitData(file);
}


PPDParser::PPDParser(const BDirectory& dir, const char* fname)
{
        BFile file(&dir, fname, B_READ_ONLY);
        InitData(file);
}


PPDParser::PPDParser(const BPath& path)
{
        BFile file(path.Path(), B_READ_ONLY);
        InitData(file);
}


status_t
PPDParser::InitData(BFile& file)
{
        // Check if file exists...
        if ((fInitErr = file.InitCheck()) != B_OK)
                return fInitErr;

        // Read entire file into BString
        ssize_t len;
        char buffer[1025];
        while ((len = file.Read(buffer, sizeof(buffer)-1)) > 0) {
                buffer[len] = '\0';
                fContent << buffer;
        }

        // Convert DOS/Windows newlines to UNIX ones
        fContent.ReplaceAll("\r\n", "\n");
        // Handle line continuation
        fContent.ReplaceAll("&&\n", "");
        // Make sure file ends with newline
        fContent << '\n';

        return B_OK;
}


BString
PPDParser::GetParameter(const BString& param)
{
        BString result, line;
        int32 pos = 0, next;
        BString pattern;

        pattern << "*" << param << ":";

        while ((next = fContent.FindFirst('\n', pos)) > 0) {
                // Grab line (without newline)
                fContent.CopyInto(line, pos, next - pos);
                // Found our parameter?
                if (line.Compare(pattern, pattern.Length()) == 0) {
                        // Copy result
                        line.CopyInto(result, pattern.Length(),
                                line.Length() - pattern.Length()).Trim();
                        // If result is quoted, remove quotes
                        if (result[0] == '"') {
                                result.Truncate(result.Length() -1);
                                result.Remove(0, 1);
                        }
                        break;
                }
                pos = next +1;
        }

        return result;
}


PPDParser::~PPDParser()
{
}