private static void ProcessLine(
string line,
ref FileReadState state,
ref List <AlbumPlayed> albums,
ref AlbumPlayed currentAlbumPlayed)
{
if (string.IsNullOrWhiteSpace(line))
{
return;
}
switch (state)
{
case FileReadState.Reset:
ParseLineWhenReset(line, ref state, ref currentAlbumPlayed);
break;
case FileReadState.OnDate:
ParseLineWhenOnDate(line, ref state, ref currentAlbumPlayed);
break;
case FileReadState.OnLocation:
ParseLineWhenOnLocation(line, ref state, ref currentAlbumPlayed);
break;
case FileReadState.OnArtist:
ParseLineWhenOnArtist(line, ref state, ref currentAlbumPlayed, albums);
break;
}
}
private static void ParseLineWhenOnArtist(
string line,
ref FileReadState state,
ref AlbumPlayed currentAlbumPlayed,
List <AlbumPlayed> albums)
{
if (line[0] == '\t' && line[1] == '\t' && line[2] == '\t')
{
string album = line.TrimEnd(IgnoreChars).TrimStart(IgnoreChars);
currentAlbumPlayed.Album = album;
albums.Add(currentAlbumPlayed);
currentAlbumPlayed = new AlbumPlayed(currentAlbumPlayed);
currentAlbumPlayed.Date = currentAlbumPlayed.Date.AddMinutes(1);
}
else if (line[0] == '\t' && line[1] == '\t')
{
ParseLineWhenOnLocation(line, ref state, ref currentAlbumPlayed);
}
else if (line[0] == '\t')
{
ParseLineWhenOnDate(line, ref state, ref currentAlbumPlayed);
}
else
{
ParseLineWhenReset(line, ref state, ref currentAlbumPlayed);
}
}
public static List <AlbumPlayed> GetAlbumsPlayedFromFile(string filePath)
{
List <AlbumPlayed> albums = new List <AlbumPlayed>();
// check file exists
if (!File.Exists(filePath))
{
return(albums);
}
// default the parsing state data
string line;
FileReadState parseState = FileReadState.Reset;
AlbumPlayed currentAlbumPlayed = new AlbumPlayed();
// Read the file and parse it line by line.
StreamReader file = new StreamReader(filePath);
while ((line = file.ReadLine()) != null)
{
ProcessLine(line, ref parseState, ref albums, ref currentAlbumPlayed);
}
file.Close();
return(albums);
}
private static void ParseLineWhenOnDate(
string line,
ref FileReadState state,
ref AlbumPlayed currentAlbumPlayed)
{
if (line[0] == '\t')
{
string location = line.TrimEnd(IgnoreChars).TrimStart(IgnoreChars);
currentAlbumPlayed.Location = location;
state = FileReadState.OnLocation;
}
}
private static void ParseLineWhenOnLocation(
string line,
ref FileReadState state,
ref AlbumPlayed currentAlbumPlayed)
{
if (line[0] == '\t' && line[1] == '\t')
{
string artist = line.TrimEnd(IgnoreChars).TrimStart(IgnoreChars);
currentAlbumPlayed.Artist = artist;
state = FileReadState.OnArtist;
}
}
private static void ParseLineWhenReset(
string line,
ref FileReadState state,
ref AlbumPlayed currentAlbumPlayed)
{
if (char.IsLetterOrDigit(line[0]))
{
var words = line.Split(' ');
if (words.Length >= NumberWordsInDate)
{
DateTime date = DateTime.Now;
if (ParseDateFromString(words, ref date))
{
currentAlbumPlayed.Date = date;
state = FileReadState.OnDate;
}
}
}
}
//------------------------------------------//
private bool readFileHeader()
{
/*
* $$HEADERSTART
* $$BINARY
* $$UNITS/00000000.010000
* $$VERSION/200
* $$LABEL/1,part1
* $$DATE/040513
* $$DIMENSION/00000000.000000,00000000.000000,00000000.000000,00000010.000000,00000012.000000,00000012.980000
* $$LAYERS/000650
* $$HEADEREND
*/
FileReadState state = FileReadState.none;
//- der Header sollte nicht länger als 1000 Byte sein (in der Regel 300 Byte)
byte[] buffer = readByte(HEADER_BUFFER_LEN + 5, 0);
int bufLen = buffer.Length - 1;
for (int i = 0; i < bufLen; i++)
{
if ((buffer[i] == '/') && (buffer[i + 1] == '/')) //- ein Kommentar beginnt
{
for (i += 3; i < bufLen; i++)
{
if ((buffer[i - 1] == '/') && (buffer[i] == '/'))
{
break; //- Kommentar Ende
}
}
}
else if ((buffer[i] == '$') && (buffer[i + 1] == '$')) //- ein Befehl
{
i += 2; //- 2 bytes ($$) überspringen
bool okToken = false;
switch (state)
{
case FileReadState.none:
if (compareAndMoveBuffer(buffer, ref i, bufLen, "HEADERSTART"))
{
state = FileReadState.inhead;
okToken = true;
}
break;
case FileReadState.inhead:
if (compareAndMoveBuffer(buffer, ref i, bufLen, "BINARY"))
{
m_FileHead.isBinary = true;
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "ASCII"))
{
m_FileHead.isBinary = false;
okToken = true;
break;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "LAYERS/"))
{
m_FileHead.layers = readIntAndMove(buffer, ref i, bufLen);
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "UNITS/"))
{
m_FileHead.unit = (float)readRealAndMove(buffer, ref i, bufLen);
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "VERSION/"))
{
m_FileHead.version = readIntAndMove(buffer, ref i, bufLen);
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "DIMENSION/"))
{
m_FileHead.d_x1 = readRealAndMove(buffer, ref i, bufLen);
if ((buffer[i] != ','))
{
break;
}
i++; //- trennzeichen dazwischen
m_FileHead.d_y1 = readRealAndMove(buffer, ref i, bufLen);
if ((buffer[i] != ','))
{
break;
}
i++; //- trennzeichen dazwischen
m_FileHead.d_z1 = readRealAndMove(buffer, ref i, bufLen);
if ((buffer[i] != ','))
{
break;
}
i++; //- trennzeichen dazwischen
m_FileHead.d_x2 = readRealAndMove(buffer, ref i, bufLen);
if ((buffer[i] != ','))
{
break;
}
i++; //- trennzeichen dazwischen
m_FileHead.d_y2 = readRealAndMove(buffer, ref i, bufLen);
if ((buffer[i] != ','))
{
break;
}
i++; //- trennzeichen dazwischen
m_FileHead.d_z2 = readRealAndMove(buffer, ref i, bufLen);
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "DATE/"))
{
m_FileHead.fileDate = readIntAndMove(buffer, ref i, bufLen);
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "LABEL/"))
{
//- id: Identifier to allow more than one model information in one file. For every id used in the commands start polyline (short/long/ASCII) and start hatches (short/long/ASCII) there shall be one command $$LABEL. Each id causes the building-process to build a different part.
readIntAndMove(buffer, ref i, bufLen);
//- trennzeichen dazwischen
if ((buffer[i] != ','))
{
break;
}
i++;
//- text: An ASCII string that gives some comment on the part.
readStrAndMove(buffer, ref i, bufLen);
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "ALIGN"))
{
m_FileHead.align = true;
okToken = true;
}
else if (compareAndMoveBuffer(buffer, ref i, bufLen, "HEADEREND"))
{
m_FileHead.dataOffset = i;
state = FileReadState.afterhead;
return(true);
}
break;
}
if (!okToken)
{
m_error.addError("Unknown token in file at pos: " + i);
}
}
else //- unbekannte Zeichenfolge
{
if ((buffer[i] != ' ') && (buffer[i] != 9) && (buffer[i] != 10) && (buffer[i] != 13))
{
m_error.addError("Unknown char in file at pos: " + i);
}
}
}
return(false);
}
