static XPathInput Parse(string[] lines)
{
var result = new XPathInput
{
Variables = new Dictionary <string, object>()
};
var regex1 = new Regex(@"^declare\s+variable\s+\$(\w+)\s+(.*)");
var regex2 = new Regex(@"^external[;\s]*$");
var regex3 = new Regex(@"^:=\s*(.*?)[;\s]*$");
int i;
bool comment = false;
for (i = 0; i < lines.Length; ++i)
{
var line = lines[i].Trim();
repeat:
// empty line
if (line.Length == 0)
{
continue;
}
// comment
if (comment)
{
int index = line.IndexOf(":)", StringComparison.Ordinal);
if (index < 0)
{
continue;
}
line = line.Substring(index + 2).Trim();
comment = false;
goto repeat;
}
else if (line.StartsWith("(:", StringComparison.Ordinal))
{
line = line.Substring(2);
comment = true;
goto repeat;
}
var match = regex1.Match(line);
if (!match.Success)
{
break;
}
var name = match.Groups[1].Value;
var text = match.Groups[2].Value;
match = regex2.Match(text);
if (match.Success)
{
// prompt
text = Far.Api.Input("Variable: " + name, "XPathVariable", "Input variable");
if (text == null)
{
result.Variables.Add(name, string.Empty);
continue;
}
if (double.TryParse(text, out double adouble))
{
result.Variables.Add(name, adouble);
}
else
{
result.Variables.Add(name, text);
}
continue;
}
match = regex3.Match(text);
if (!match.Success)
{
throw new InvalidOperationException("declare variable: expected 'external' or ':='");
}
text = match.Groups[1].Value;
if (text.StartsWith("'", StringComparison.Ordinal) && text.EndsWith("'", StringComparison.Ordinal) ||
text.StartsWith("\"", StringComparison.Ordinal) && text.EndsWith("\"", StringComparison.Ordinal))
{
result.Variables.Add(name, text.Substring(1, text.Length - 2));
}
else
{
if (!double.TryParse(text, out double adouble))
{
throw new InvalidOperationException("Not supported variable value.");
}
result.Variables.Add(name, adouble);
}
}
result.Expression = string.Join(Environment.NewLine, lines, i, lines.Length - i);
return(result);
}
IEnumerable <FarFile> DoInvokeXPath(ProgressBox progress)
{
// object context
var objectContext = new XPathObjectContext()
{
Filter = this.Filter,
IncrementDirectoryCount = delegate(int count)
{
ProcessedDirectoryCount += count;
if (progress == null)
{
return;
}
var directoryPerSecond = ProcessedDirectoryCount / progress.ElapsedFromStart.TotalSeconds;
progress.Activity = string.Format(null, Res.SearchActivityDeep,
FoundFileCount, ProcessedDirectoryCount, directoryPerSecond);
progress.ShowProgress();
},
Stopping = delegate
{
return(Stopping || progress != null && UIUserStop());
}
};
var xsltContext = new XPathXsltContext(objectContext.NameTable);
if (_XVariables != null)
{
foreach (var kv in _XVariables)
{
xsltContext.AddVariable(kv.Key, kv.Value);
}
}
// XPath text
string xpath;
if (string.IsNullOrEmpty(XFile))
{
xpath = XPath;
}
else
{
var input = XPathInput.ParseFile(XFile);
xpath = input.Expression;
foreach (var kv in input.Variables)
{
xsltContext.AddVariable(kv.Key, kv.Value);
}
}
var expression = XPathExpression.Compile(xpath);
if (expression.ReturnType != XPathResultType.NodeSet)
{
throw new InvalidOperationException("Invalid expression return type.");
}
expression.SetContext(xsltContext);
++ProcessedDirectoryCount;
var args = new GetFilesEventArgs(ExplorerModes.Find);
foreach (var file in _RootExplorer.GetFiles(args))
{
// stop?
if (Stopping || progress != null && UIUserStop()) //???? progress to navigator
{
break;
}
// filter out a leaf
if (Filter != null && !file.IsDirectory && !Filter(_RootExplorer, file))
{
continue;
}
var xfile = new SuperFile(_RootExplorer, file);
var navigator = new XPathObjectNavigator(xfile, objectContext);
var iterator = navigator.Select(expression);
while (iterator.MoveNext())
{
// stop?
if (Stopping || progress != null && UIUserStop()) //???? progress to navigator
{
break;
}
// found file or directory, ignore anything else
if (!(iterator.Current.UnderlyingObject is SuperFile currentFile))
{
continue;
}
// filter out directory, it is already done for files
if (Filter != null && currentFile.IsDirectory && (!Directory || !Filter(currentFile.Explorer, currentFile.File)))
{
continue;
}
// add
yield return(currentFile);
++FoundFileCount;
}
}
}
static XPathInput Parse(string[] lines)
{
var result = new XPathInput();
result.Variables = new Dictionary<string, object>();
var regex1 = new Regex(@"^declare\s+variable\s+\$(\w+)\s+(.*)");
var regex2 = new Regex(@"^external[;\s]*$");
var regex3 = new Regex(@"^:=\s*(.*?)[;\s]*$");
int i;
bool comment = false;
for (i = 0; i < lines.Length; ++i)
{
var line = lines[i].Trim();
repeat:
// empty line
if (line.Length == 0)
continue;
// comment
if (comment)
{
int index = line.IndexOf(":)", StringComparison.Ordinal);
if (index < 0)
continue;
line = line.Substring(index + 2).Trim();
comment = false;
goto repeat;
}
else if (line.StartsWith("(:", StringComparison.Ordinal))
{
line = line.Substring(2);
comment = true;
goto repeat;
}
var match = regex1.Match(line);
if (!match.Success)
break;
var name = match.Groups[1].Value;
var text = match.Groups[2].Value;
match = regex2.Match(text);
if (match.Success)
{
// prompt
text = Far.Api.Input("Variable: " + name, "XPathVariable", "Input variable");
if (text == null)
{
result.Variables.Add(name, string.Empty);
continue;
}
double adouble;
if (double.TryParse(text, out adouble))
result.Variables.Add(name, adouble);
else
result.Variables.Add(name, text);
continue;
}
match = regex3.Match(text);
if (!match.Success)
throw new InvalidOperationException("declare variable: expected 'external' or ':='");
text = match.Groups[1].Value;
if (text.StartsWith("'", StringComparison.Ordinal) && text.EndsWith("'", StringComparison.Ordinal) ||
text.StartsWith("\"", StringComparison.Ordinal) && text.EndsWith("\"", StringComparison.Ordinal))
{
result.Variables.Add(name, text.Substring(1, text.Length - 2));
}
else
{
double adouble;
if (!double.TryParse(text, out adouble))
throw new InvalidOperationException("Not supported variable value.");
result.Variables.Add(name, adouble);
}
}
result.Expression = string.Join(Environment.NewLine, lines, i, lines.Length - i);
return result;
}
