/// <summary>
/// Attempts to get the file type by searching the file for a matching structure.
/// </summary>
/// <param name="FileName"></param>
/// <param name="minRows"></param>
/// <returns></returns>
private static FileType GetFileTypeFromContents( string FileName, int minRows )
{
FileType fileType = null;
DelimitedFileReader fileReader;
Dictionary<int, int> colCounts;
int rowIndex;
int colRecCount;
if (3 > minRows) {
minRows = 3;
}
foreach (GuidFileType guidFileType in DelimitedFileReader.FileTypes) {
using (fileReader = new DelimitedFileReader()) {
try {
fileReader.OpenFile(FileName, guidFileType.Value);
} catch (Exception) {
continue;
}
colCounts = new Dictionary<int, int>();
rowIndex = 0;
while (!fileReader.EndOfStream && minRows > rowIndex++) {
string[] lines = fileReader.ReadLine();
int columns = lines.Length;
if (colCounts.ContainsKey(columns)) {
colCounts[columns]++;
} else {
if (1 < columns) {
colCounts.Add(columns, 1);
}
}
}
fileReader.Close();
}
if (rowIndex < minRows) {
throw new Exception("There must be at least " + minRows + " rows in the file for auto-testing to work");
}
if (colCounts.Keys.Count == 1) {
colRecCount = 0;
colCounts.TryGetValue(new List<int>(colCounts.Keys)[0], out colRecCount);
if (colRecCount == rowIndex - 1) {
return guidFileType.Value;
}
}
}
return fileType;
}
public bool Cat( CatOptions catOptions, string fileName, int lineStart, long linesToWrite )
{
string ext = Path.GetExtension(fileName);
string[] lines;
Dictionary<int, int> maxLen = new Dictionary<int, int>();
List<string[]> lineColumns = new List<string[]>();
int lineNumber;
int padLen;
int winWidth = Console.WindowWidth - 1;
string colPad;
lines = File.ReadAllLines(fileName);
lineStart = Math.Max(lineStart, 0);
lineNumber = 0;
padLen = catOptions.showLineNumbers ? 3 : 0;
if (linesToWrite < 0) {
linesToWrite = long.MaxValue;
}
colPad = string.Empty;
DelimitedFileReader f = new DelimitedFileReader();
f.OpenFile(fileName, new FileType(ext.Substring(1), ",", new string[] { ext }, ext.Substring(1)));
// Get the maxlength of each column.
for (int i = Math.Min(lines.Length, Math.Max(0, lineStart)); i < Math.Min(lineStart + linesToWrite, lines.Length); i++) {
string[] ls = f.ParseLine(lines[i]);
lineColumns.Add(ls);
for (int c = 0; c < ls.Length; c++) {
if (maxLen.ContainsKey(c)) {
maxLen[c] = Math.Max(maxLen[c], ls[c].Length + 1);
} else {
maxLen.Add(c, ls[c].Length + 1);
}
}
}
StringBuilder res = new StringBuilder();
foreach (string[] ls in lineColumns) {
lineNumber++;
if (catOptions.showLineNumbers) {
Console.BackgroundColor = catOptions.lineNumBackColor;
Console.ForegroundColor = catOptions.lineNumForeColor;
Console.Write("{0," + padLen + "}", lineNumber);
Console.BackgroundColor = catOptions.defaultBackColor;
Console.ForegroundColor = catOptions.defaultForeColor;
}
res.Clear();
for (int c = 0; c < ls.Length; c++) {
//res.AppendFormat("{0,-" + maxLen[c] + "}, ", ls[c]);
//res.AppendFormat("{0,-" + maxLen[c] + "} ", ls[c] + ",");
res.AppendFormat("{0,-" + maxLen[c] + "}, ", ls[c].TrimStart());
}
Console.WriteLine(res.ToString().TrimEnd(' ', ','));
//Console.WriteLine(res.ToString().TrimEnd().TrimEnd(','));
}
return true;
}