private static bool CutTables(
TableDescriptor descriptor, string reader,
string inputDir, string outputDir)
{
// check reader
if (descriptor.Readers.ContainsKey(reader) == false)
{
Console.Error.WriteLine(string.Format(
"error: reader `{0}` is not defined", reader));
return(false);
}
for (int i = 0; i < descriptor.Tables.Count; ++i)
{
TableDescriptor.TableDef tableDef = descriptor.Tables[i];
if (tableDef.Readers.Count == 0 ||
tableDef.Readers.ContainsKey(reader))
{
if (CutTable(tableDef, reader,
inputDir, outputDir) == false)
{
return(false);
}
}
}
return(true);
}
private static bool CutTable(
TableDescriptor.TableDef tableDef, string reader,
string inputDir, string outputDir)
{
string[] lineSep = { "\r\n" };
string[] colSep = { "\t" };
Dictionary <int, bool> deletedColumns =
new Dictionary <int, bool>();
for (int i = 0; i < tableDef.Columns.Count; ++i)
{
TableDescriptor.TableDef.ColumnDef columnDef =
tableDef.Columns[i];
if (columnDef == tableDef.TableKey ||
columnDef.Readers.Count == 0 ||
columnDef.Readers.ContainsKey(reader))
{
continue;
}
deletedColumns.Add(i, true);
}
// read input file
string inputFileContent;
try {
inputFileContent = File.ReadAllText(
Path.Combine(inputDir, tableDef.FileName),
Encoding.Unicode);
} catch (Exception e) {
Console.Error.WriteLine(string.Format(
"error: can not read input file `{0}`: {1}",
tableDef.FileName, e.Message));
return(false);
}
// split lines
string[] lines = inputFileContent.Split(lineSep,
StringSplitOptions.None);
if (lines[lines.Length - 1] != "")
{
Console.Error.WriteLine(string.Format(
"error: input file `{0}` file line ending is required",
tableDef.FileName));
return(false);
}
int lineCount = lines.Length - 1;
if (lineCount < 2)
{
Console.Error.WriteLine(string.Format(
"error: input file `{0}` " +
"comment line and name line is required",
tableDef.FileName));
return(false);
}
// split columns
List <List <string> > lineCols = new List <List <string> >();
for (int i = 0; i < lineCount; ++i)
{
List <string> cols = new List <string>(
lines[i].Split(colSep, StringSplitOptions.None));
if (cols.Count != tableDef.Columns.Count)
{
Console.Error.WriteLine(string.Format(
"error: input file `{0}` " +
"line {1} column count {2} is invalid, " +
"should be {3}",
tableDef.Name, i + 1, cols.Count,
tableDef.Columns.Count));
return(false);
}
lineCols.Add(cols);
}
// check name line
for (int i = 0; i < tableDef.Columns.Count; ++i)
{
TableDescriptor.TableDef.ColumnDef columnDef =
tableDef.Columns[i];
if (lineCols[1][i] != columnDef.Name)
{
Console.Error.WriteLine(string.Format(
"error: input file `{0}` " +
"column {1} should be named as `{2}`",
tableDef.Name, i + 1, columnDef.Name));
return(false);
}
}
// cut columns
StringBuilder sb = new StringBuilder();
List <string> outputCols = new List <string>();
for (int i = 0; i < lineCount; ++i)
{
List <string> inputCols = lineCols[i];
outputCols.Clear();
for (int j = 0; j < inputCols.Count; ++j)
{
if (deletedColumns.ContainsKey(j))
{
continue;
}
outputCols.Add(inputCols[j]);
}
sb.Append(string.Join("\t", outputCols));
sb.Append("\r\n");
}
string outputFileContent = sb.ToString();
// write output file
try {
File.WriteAllText(
Path.Combine(outputDir, tableDef.FileName),
outputFileContent,
Encoding.Unicode);
} catch (Exception e) {
Console.Error.WriteLine(string.Format(
"error: can not write output file `{0}`: {1}",
tableDef.FileName, e.Message));
return(false);
}
return(true);
}