public ProcessListParser(IList<string> lines)
{
// We at least should have a line for the header, a system process, and 'ps'
if (lines.Count < 3)
{
throw GetException();
}
_lines = lines;
TextColumn[] columns = TextColumn.TryParseHeader(lines[0]);
if (columns == null || columns.Length < 2)
{
throw GetException();
}
_pidColumn = columns.FirstOrDefault((column) => column.Name.Equals("PID", StringComparison.OrdinalIgnoreCase));
if (_pidColumn == null)
throw GetException();
_nameColumn = columns.FirstOrDefault((column) => column.Name.Equals("NAME", StringComparison.OrdinalIgnoreCase));
if (_nameColumn == null)
{
// use the last column if one wasn't called 'name'
_nameColumn = columns[columns.Length - 1];
}
}
public ProcessListParser(IList <string> lines)
{
// We at least should have a line for the header, a system process, and 'ps'
if (lines.Count < 3)
{
throw GetException();
}
_lines = lines;
TextColumn[] columns = TextColumn.TryParseHeader(lines[0]);
if (columns == null || columns.Length < 2)
{
throw GetException();
}
_pidColumn = columns.FirstOrDefault((column) => column.Name.Equals("PID", StringComparison.OrdinalIgnoreCase));
if (_pidColumn == null)
{
throw GetException();
}
_nameColumn = columns.FirstOrDefault((column) => column.Name.Equals("NAME", StringComparison.OrdinalIgnoreCase));
if (_nameColumn == null)
{
// use the last column if one wasn't called 'name'
_nameColumn = columns[columns.Length - 1];
}
}
/// <summary>
/// Parsers the header line from a table, returning an array of columns
/// </summary>
/// <param name="headerLine">The line of text with the header</param>
/// <returns>[Optional] Array of columns</returns>
public static TextColumn[] TryParseHeader(string headerLine)
{
List <TextColumn> columns = new List <TextColumn>();
int startIndex = 0;
int position = 0;
// Move past any initial whitespace
if (!SkipWhitespace(ref position, headerLine))
{
return(null); // line is nothing but whitespace
}
int nameStartIndex = position;
while (true)
{
// Skip until the start of the next column
int nextWhitespace = headerLine.IndexOfAny(s_spaceChars, position);
position = nextWhitespace;
if (position >= 0 && SkipWhitespace(ref position, headerLine))
{
// Position is currently at the start of the next column. Create an object for the column we just went past
TextColumn newColumn = new TextColumn(headerLine.Substring(nameStartIndex, nextWhitespace - nameStartIndex), startIndex, position - startIndex);
columns.Add(newColumn);
nameStartIndex = startIndex = position;
}
else
{
// Create the last column
if (nextWhitespace < 0)
{
nextWhitespace = headerLine.Length;
}
TextColumn newColumn = new TextColumn(headerLine.Substring(nameStartIndex, nextWhitespace - nameStartIndex), startIndex, -1);
columns.Add(newColumn);
return(columns.ToArray());
}
}
}
/// <summary>
/// Parsers the header line from a table, returning an array of columns
/// </summary>
/// <param name="headerLine">The line of text with the header</param>
/// <returns>[Optional] Array of columns</returns>
public static TextColumn[] TryParseHeader(string headerLine)
{
List<TextColumn> columns = new List<TextColumn>();
int startIndex = 0;
int position = 0;
// Move past any initial whitespace
if (!SkipWhitespace(ref position, headerLine))
{
return null; // line is nothing but whitespace
}
int nameStartIndex = position;
while (true)
{
// Skip until the start of the next column
int nextWhitespace = headerLine.IndexOfAny(s_spaceChars, position);
position = nextWhitespace;
if (position >= 0 && SkipWhitespace(ref position, headerLine))
{
// Position is currently at the start of the next column. Create an object for the column we just went past
TextColumn newColumn = new TextColumn(headerLine.Substring(nameStartIndex, nextWhitespace - nameStartIndex), startIndex, position - startIndex);
columns.Add(newColumn);
nameStartIndex = startIndex = position;
}
else
{
// Create the last column
if (nextWhitespace < 0)
nextWhitespace = headerLine.Length;
TextColumn newColumn = new TextColumn(headerLine.Substring(nameStartIndex, nextWhitespace - nameStartIndex), startIndex, -1);
columns.Add(newColumn);
return columns.ToArray();
}
}
}