private static SelectionCriterion _ParseCriterion(String s)
{
if (s == null)
{
return(null);
}
// shorthand for filename glob
if (s.IndexOf(" ") == -1)
{
s = "name = " + s;
}
// inject spaces after open paren and before close paren
string[] prPairs = { @"\((\S)", "( $1", @"(\S)\)", "$1 )", };
for (int i = 0; i + 1 < prPairs.Length; i += 2)
{
Regex rgx = new Regex(prPairs[i]);
s = rgx.Replace(s, prPairs[i + 1]);
}
// split the expression into tokens
string[] tokens = s.Trim().Split(' ', '\t');
if (tokens.Length < 3)
{
throw new ArgumentException(s);
}
SelectionCriterion current = null;
LogicalConjunction pendingConjunction = LogicalConjunction.NONE;
ParseState state;
var stateStack = new System.Collections.Generic.Stack <ParseState>();
var critStack = new System.Collections.Generic.Stack <SelectionCriterion>();
stateStack.Push(ParseState.Start);
for (int i = 0; i < tokens.Length; i++)
{
switch (tokens[i].ToLower())
{
case "and":
case "xor":
case "or":
state = stateStack.Peek();
if (state != ParseState.CriterionDone)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
if (tokens.Length <= i + 3)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
pendingConjunction = (LogicalConjunction)Enum.Parse(typeof(LogicalConjunction), tokens[i].ToUpper());
current = new CompoundCriterion {
Left = current, Right = null, Conjunction = pendingConjunction
};
stateStack.Push(state);
stateStack.Push(ParseState.ConjunctionPending);
critStack.Push(current);
break;
case "(":
state = stateStack.Peek();
if (state != ParseState.Start && state != ParseState.ConjunctionPending && state != ParseState.OpenParen)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
if (tokens.Length <= i + 4)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
stateStack.Push(ParseState.OpenParen);
break;
case ")":
state = stateStack.Pop();
if (stateStack.Peek() != ParseState.OpenParen)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
stateStack.Pop();
stateStack.Push(ParseState.CriterionDone);
break;
case "atime":
case "ctime":
case "mtime":
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
DateTime t;
try
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd-HH:mm:ss", null);
}
catch (FormatException)
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd", null);
}
t = DateTime.SpecifyKind(t, DateTimeKind.Local).ToUniversalTime();
current = new TimeCriterion
{
Which = (WhichTime)Enum.Parse(typeof(WhichTime), tokens[i]),
Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]),
Time = t
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
break;
case "length":
case "size":
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
Int64 sz = 0;
string v = tokens[i + 2];
if (v.ToUpper().EndsWith("K"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024;
}
else if (v.ToUpper().EndsWith("KB"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024;
}
else if (v.ToUpper().EndsWith("M"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024;
}
else if (v.ToUpper().EndsWith("MB"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024;
}
else if (v.ToUpper().EndsWith("G"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024 * 1024;
}
else if (v.ToUpper().EndsWith("GB"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024 * 1024;
}
else
{
sz = Int64.Parse(tokens[i + 2]);
}
current = new SizeCriterion
{
Size = sz,
Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1])
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
break;
case "filename":
case "name":
{
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
ComparisonOperator c =
(ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
string m = tokens[i + 2];
// handle single-quoted filespecs (used to include spaces in filename patterns)
if (m.StartsWith("'"))
{
int ix = i;
if (!m.EndsWith("'"))
{
do
{
i++;
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, ix, tokens.Length - ix));
}
m += " " + tokens[i + 2];
} while (!tokens[i + 2].EndsWith("'"));
}
// trim off leading and trailing single quotes
m = m.Substring(1, m.Length - 2);
}
current = new NameCriterion
{
MatchingFileSpec = m,
Operator = c
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
}
break;
case "attributes":
{
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
ComparisonOperator c =
(ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
current = new AttributesCriterion
{
AttributeString = tokens[i + 2],
Operator = c
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
}
break;
case "":
// NOP
stateStack.Push(ParseState.Whitespace);
break;
default:
throw new ArgumentException("'" + tokens[i] + "'");
}
state = stateStack.Peek();
if (state == ParseState.CriterionDone)
{
stateStack.Pop();
if (stateStack.Peek() == ParseState.ConjunctionPending)
{
while (stateStack.Peek() == ParseState.ConjunctionPending)
{
var cc = critStack.Pop() as CompoundCriterion;
cc.Right = current;
current = cc; // mark the parent as current (walk up the tree)
stateStack.Pop(); // the conjunction is no longer pending
state = stateStack.Pop();
if (state != ParseState.CriterionDone)
{
throw new ArgumentException("??");
}
}
}
else
{
stateStack.Push(ParseState.CriterionDone); // not sure?
}
}
if (state == ParseState.Whitespace)
{
stateStack.Pop();
}
}
return(current);
}
private static SelectionCriterion _ParseCriterion(String s)
{
if (s == null)
{
return(null);
}
// inject spaces after open paren and before close paren, etc
s = NormalizeCriteriaExpression(s);
// no spaces in the criteria is shorthand for filename glob
if (s.IndexOf(" ") == -1)
{
s = "name = " + s;
}
// split the expression into tokens
string[] tokens = s.Trim().Split(' ', '\t');
if (tokens.Length < 3)
{
throw new ArgumentException(s);
}
SelectionCriterion current = null;
LogicalConjunction pendingConjunction = LogicalConjunction.NONE;
ParseState state;
var stateStack = new System.Collections.Generic.Stack <ParseState>();
var critStack = new System.Collections.Generic.Stack <SelectionCriterion>();
stateStack.Push(ParseState.Start);
for (int i = 0; i < tokens.Length; i++)
{
string tok1 = tokens[i].ToLower();
switch (tok1)
{
case "and":
case "xor":
case "or":
state = stateStack.Peek();
if (state != ParseState.CriterionDone)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
if (tokens.Length <= i + 3)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
pendingConjunction = (LogicalConjunction)Enum.Parse(typeof(LogicalConjunction), tokens[i].ToUpper(), true);
current = new CompoundCriterion {
Left = current, Right = null, Conjunction = pendingConjunction
};
stateStack.Push(state);
stateStack.Push(ParseState.ConjunctionPending);
critStack.Push(current);
break;
case "(":
state = stateStack.Peek();
if (state != ParseState.Start && state != ParseState.ConjunctionPending && state != ParseState.OpenParen)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
if (tokens.Length <= i + 4)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
stateStack.Push(ParseState.OpenParen);
break;
case ")":
state = stateStack.Pop();
if (stateStack.Peek() != ParseState.OpenParen)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
stateStack.Pop();
stateStack.Push(ParseState.CriterionDone);
break;
case "atime":
case "ctime":
case "mtime":
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
DateTime t;
try
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd-HH:mm:ss", null);
}
catch (FormatException)
{
try
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy/MM/dd-HH:mm:ss", null);
}
catch (FormatException)
{
try
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy/MM/dd", null);
}
catch (FormatException)
{
try
{
t = DateTime.ParseExact(tokens[i + 2], "MM/dd/yyyy", null);
}
catch (FormatException)
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd", null);
}
}
}
}
t = DateTime.SpecifyKind(t, DateTimeKind.Local).ToUniversalTime();
current = new TimeCriterion
{
Which = (WhichTime)Enum.Parse(typeof(WhichTime), tokens[i], true),
Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]),
Time = t
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
break;
case "length":
case "size":
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
Int64 sz = 0;
string v = tokens[i + 2];
if (v.ToUpper().EndsWith("K"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024;
}
else if (v.ToUpper().EndsWith("KB"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024;
}
else if (v.ToUpper().EndsWith("M"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024;
}
else if (v.ToUpper().EndsWith("MB"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024;
}
else if (v.ToUpper().EndsWith("G"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024 * 1024;
}
else if (v.ToUpper().EndsWith("GB"))
{
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024 * 1024;
}
else
{
sz = Int64.Parse(tokens[i + 2]);
}
current = new SizeCriterion
{
Size = sz,
Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1])
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
break;
case "filename":
case "name":
{
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
ComparisonOperator c =
(ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
string m = tokens[i + 2];
// handle single-quoted filespecs (used to include
// spaces in filename patterns)
if (m.StartsWith("'") && m.EndsWith("'"))
{
// trim off leading and trailing single quotes and
// revert the control characters to spaces.
m = m.Substring(1, m.Length - 2)
.Replace("\u0006", " ");
}
// if (m.StartsWith("'"))
// m = m.Replace("\u0006", " ");
//Fix for Unix -> NormalizeCriteriaExpression replaces all slashes with backslashes
if (Path.DirectorySeparatorChar == '/')
{
m = m.Replace('\\', Path.DirectorySeparatorChar);
}
current = new NameCriterion
{
MatchingFileSpec = m,
Operator = c
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
}
break;
case "attrs":
case "attributes":
case "type":
{
if (tokens.Length <= i + 2)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
ComparisonOperator c =
(ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
{
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
}
current = (tok1 == "type")
? (SelectionCriterion) new TypeCriterion
{
AttributeString = tokens[i + 2],
Operator = c
}
: (SelectionCriterion) new AttributesCriterion
{
AttributeString = tokens[i + 2],
Operator = c
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
}
break;
case "":
// NOP
stateStack.Push(ParseState.Whitespace);
break;
default:
throw new ArgumentException("'" + tokens[i] + "'");
}
state = stateStack.Peek();
if (state == ParseState.CriterionDone)
{
stateStack.Pop();
if (stateStack.Peek() == ParseState.ConjunctionPending)
{
while (stateStack.Peek() == ParseState.ConjunctionPending)
{
var cc = critStack.Pop() as CompoundCriterion;
cc.Right = current;
current = cc; // mark the parent as current (walk up the tree)
stateStack.Pop(); // the conjunction is no longer pending
state = stateStack.Pop();
if (state != ParseState.CriterionDone)
{
throw new ArgumentException("??");
}
}
}
else
{
stateStack.Push(ParseState.CriterionDone); // not sure?
}
}
if (state == ParseState.Whitespace)
{
stateStack.Pop();
}
}
return(current);
}
private static SelectionCriterion _ParseCriterion(string s)
{
if (s == null)
{
return(null);
}
s = NormalizeCriteriaExpression(s);
if (s.IndexOf(" ") == -1)
{
s = "name = " + s;
}
string[] array = s.Trim().Split(' ', '\t');
if (array.Length < 3)
{
throw new ArgumentException(s);
}
SelectionCriterion selectionCriterion = null;
LogicalConjunction logicalConjunction = LogicalConjunction.NONE;
Stack <ParseState> stack = new Stack <ParseState>();
Stack <SelectionCriterion> stack2 = new Stack <SelectionCriterion>();
stack.Push(ParseState.Start);
for (int i = 0; i < array.Length; i++)
{
string text = array[i].ToLower();
ParseState parseState;
switch (text)
{
case "and":
case "xor":
case "or":
{
parseState = stack.Peek();
if (parseState != ParseState.CriterionDone)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
if (array.Length <= i + 3)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
logicalConjunction = (LogicalConjunction)Enum.Parse(typeof(LogicalConjunction), array[i].ToUpper(), ignoreCase: true);
CompoundCriterion compoundCriterion = new CompoundCriterion();
compoundCriterion.Left = selectionCriterion;
compoundCriterion.Right = null;
compoundCriterion.Conjunction = logicalConjunction;
selectionCriterion = compoundCriterion;
stack.Push(parseState);
stack.Push(ParseState.ConjunctionPending);
stack2.Push(selectionCriterion);
break;
}
case "(":
parseState = stack.Peek();
if (parseState != 0 && parseState != ParseState.ConjunctionPending && parseState != ParseState.OpenParen)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
if (array.Length <= i + 4)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
stack.Push(ParseState.OpenParen);
break;
case ")":
parseState = stack.Pop();
if (stack.Peek() != ParseState.OpenParen)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
stack.Pop();
stack.Push(ParseState.CriterionDone);
break;
case "atime":
case "ctime":
case "mtime":
{
if (array.Length <= i + 2)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
DateTime value;
try
{
value = DateTime.ParseExact(array[i + 2], "yyyy-MM-dd-HH:mm:ss", null);
}
catch (FormatException)
{
try
{
value = DateTime.ParseExact(array[i + 2], "yyyy/MM/dd-HH:mm:ss", null);
}
catch (FormatException)
{
try
{
value = DateTime.ParseExact(array[i + 2], "yyyy/MM/dd", null);
}
catch (FormatException)
{
try
{
value = DateTime.ParseExact(array[i + 2], "MM/dd/yyyy", null);
}
catch (FormatException)
{
value = DateTime.ParseExact(array[i + 2], "yyyy-MM-dd", null);
}
}
}
}
value = DateTime.SpecifyKind(value, DateTimeKind.Local).ToUniversalTime();
TimeCriterion timeCriterion = new TimeCriterion();
timeCriterion.Which = (WhichTime)Enum.Parse(typeof(WhichTime), array[i], ignoreCase: true);
timeCriterion.Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), array[i + 1]);
timeCriterion.Time = value;
selectionCriterion = timeCriterion;
i += 2;
stack.Push(ParseState.CriterionDone);
break;
}
case "length":
case "size":
{
if (array.Length <= i + 2)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
long num = 0L;
string text2 = array[i + 2];
num = (text2.ToUpper().EndsWith("K") ? (long.Parse(text2.Substring(0, text2.Length - 1)) * 1024) : (text2.ToUpper().EndsWith("KB") ? (long.Parse(text2.Substring(0, text2.Length - 2)) * 1024) : (text2.ToUpper().EndsWith("M") ? (long.Parse(text2.Substring(0, text2.Length - 1)) * 1024 * 1024) : (text2.ToUpper().EndsWith("MB") ? (long.Parse(text2.Substring(0, text2.Length - 2)) * 1024 * 1024) : (text2.ToUpper().EndsWith("G") ? (long.Parse(text2.Substring(0, text2.Length - 1)) * 1024 * 1024 * 1024) : ((!text2.ToUpper().EndsWith("GB")) ? long.Parse(array[i + 2]) : (long.Parse(text2.Substring(0, text2.Length - 2)) * 1024 * 1024 * 1024)))))));
SizeCriterion sizeCriterion = new SizeCriterion();
sizeCriterion.Size = num;
sizeCriterion.Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), array[i + 1]);
selectionCriterion = sizeCriterion;
i += 2;
stack.Push(ParseState.CriterionDone);
break;
}
case "filename":
case "name":
{
if (array.Length <= i + 2)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
ComparisonOperator comparisonOperator2 = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), array[i + 1]);
if (comparisonOperator2 != ComparisonOperator.NotEqualTo && comparisonOperator2 != ComparisonOperator.EqualTo)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
string text3 = array[i + 2];
if (text3.StartsWith("'") && text3.EndsWith("'"))
{
text3 = text3.Substring(1, text3.Length - 2).Replace("\u0006", " ");
}
NameCriterion nameCriterion = new NameCriterion();
nameCriterion.MatchingFileSpec = text3;
nameCriterion.Operator = comparisonOperator2;
selectionCriterion = nameCriterion;
i += 2;
stack.Push(ParseState.CriterionDone);
break;
}
case "attrs":
case "attributes":
case "type":
{
if (array.Length <= i + 2)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
ComparisonOperator comparisonOperator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), array[i + 1]);
if (comparisonOperator != ComparisonOperator.NotEqualTo && comparisonOperator != ComparisonOperator.EqualTo)
{
throw new ArgumentException(string.Join(" ", array, i, array.Length - i));
}
object obj;
if (!(text == "type"))
{
AttributesCriterion attributesCriterion = new AttributesCriterion();
attributesCriterion.AttributeString = array[i + 2];
attributesCriterion.Operator = comparisonOperator;
obj = attributesCriterion;
}
else
{
TypeCriterion typeCriterion = new TypeCriterion();
typeCriterion.AttributeString = array[i + 2];
typeCriterion.Operator = comparisonOperator;
obj = typeCriterion;
}
selectionCriterion = (SelectionCriterion)obj;
i += 2;
stack.Push(ParseState.CriterionDone);
break;
}
case "":
stack.Push(ParseState.Whitespace);
break;
default:
throw new ArgumentException("'" + array[i] + "'");
}
parseState = stack.Peek();
if (parseState == ParseState.CriterionDone)
{
stack.Pop();
if (stack.Peek() == ParseState.ConjunctionPending)
{
while (stack.Peek() == ParseState.ConjunctionPending)
{
CompoundCriterion compoundCriterion2 = stack2.Pop() as CompoundCriterion;
compoundCriterion2.Right = selectionCriterion;
selectionCriterion = compoundCriterion2;
stack.Pop();
parseState = stack.Pop();
if (parseState != ParseState.CriterionDone)
{
throw new ArgumentException("??");
}
}
}
else
{
stack.Push(ParseState.CriterionDone);
}
}
if (parseState == ParseState.Whitespace)
{
stack.Pop();
}
}
return(selectionCriterion);
}
private static SelectionCriterion _ParseCriterion(String s)
{
if (s == null) return null;
// inject spaces after open paren and before close paren
string[][] prPairs =
{
new string[] { @"\(\(", "( (" },
new string[] { @"\)\)", ") )" },
new string[] { @"\((\S)", "( $1" },
new string[] { @"(\S)\)", "$1 )" },
new string[] { @"(\S)\(", "$1 (" },
new string[] { @"\)(\S)", ") $1" },
new string[] { @"([^ ]+)>([^ ]+)", "$1 > $2" },
new string[] { @"([^ ]+)<([^ ]+)", "$1 < $2" },
new string[] { @"([^ ]+)!=([^ ]+)", "$1 != $2" },
new string[] { @"([^ ]+)=([^ ]+)", "$1 = $2" },
};
for (int i = 0; i < prPairs.Length; i++)
{
Regex rgx = new Regex(prPairs[i][0]);
s = rgx.Replace(s, prPairs[i][1]);
}
// shorthand for filename glob
if (s.IndexOf(" ") == -1)
s = "name = " + s;
// split the expression into tokens
string[] tokens = s.Trim().Split(' ', '\t');
if (tokens.Length < 3) throw new ArgumentException(s);
SelectionCriterion current = null;
LogicalConjunction pendingConjunction = LogicalConjunction.NONE;
ParseState state;
var stateStack = new System.Collections.Generic.Stack<ParseState>();
var critStack = new System.Collections.Generic.Stack<SelectionCriterion>();
stateStack.Push(ParseState.Start);
for (int i = 0; i < tokens.Length; i++)
{
string tok1 = tokens[i].ToLower();
switch (tok1)
{
case "and":
case "xor":
case "or":
state = stateStack.Peek();
if (state != ParseState.CriterionDone)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
if (tokens.Length <= i + 3)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
pendingConjunction = (LogicalConjunction)Enum.Parse(typeof(LogicalConjunction), tokens[i].ToUpper(), true);
current = new CompoundCriterion { Left = current, Right = null, Conjunction = pendingConjunction };
stateStack.Push(state);
stateStack.Push(ParseState.ConjunctionPending);
critStack.Push(current);
break;
case "(":
state = stateStack.Peek();
if (state != ParseState.Start && state != ParseState.ConjunctionPending && state != ParseState.OpenParen)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
if (tokens.Length <= i + 4)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
stateStack.Push(ParseState.OpenParen);
break;
case ")":
state = stateStack.Pop();
if (stateStack.Peek() != ParseState.OpenParen)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
stateStack.Pop();
stateStack.Push(ParseState.CriterionDone);
break;
case "atime":
case "ctime":
case "mtime":
if (tokens.Length <= i + 2)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
DateTime t;
try
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd-HH:mm:ss", null);
}
catch (FormatException)
{
try
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy/MM/dd-HH:mm:ss", null);
}
catch (FormatException)
{
try
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy/MM/dd", null);
}
catch (FormatException)
{
try
{
t = DateTime.ParseExact(tokens[i + 2], "MM/dd/yyyy", null);
}
catch (FormatException)
{
t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd", null);
}
}
}
}
t= DateTime.SpecifyKind(t, DateTimeKind.Local).ToUniversalTime();
current = new TimeCriterion
{
Which = (WhichTime)Enum.Parse(typeof(WhichTime), tokens[i], true),
Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]),
Time = t
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
break;
case "length":
case "size":
if (tokens.Length <= i + 2)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
Int64 sz = 0;
string v = tokens[i + 2];
if (v.ToUpper().EndsWith("K"))
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024;
else if (v.ToUpper().EndsWith("KB"))
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024;
else if (v.ToUpper().EndsWith("M"))
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024;
else if (v.ToUpper().EndsWith("MB"))
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024;
else if (v.ToUpper().EndsWith("G"))
sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024 * 1024;
else if (v.ToUpper().EndsWith("GB"))
sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024 * 1024;
else sz = Int64.Parse(tokens[i + 2]);
current = new SizeCriterion
{
Size = sz,
Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1])
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
break;
case "filename":
case "name":
{
if (tokens.Length <= i + 2)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
ComparisonOperator c =
(ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
string m = tokens[i + 2];
// handle single-quoted filespecs (used to include spaces in filename patterns)
if (m.StartsWith("'"))
{
int ix = i;
if (!m.EndsWith("'"))
{
do
{
i++;
if (tokens.Length <= i + 2)
throw new ArgumentException(String.Join(" ", tokens, ix, tokens.Length - ix));
m += " " + tokens[i + 2];
} while (!tokens[i + 2].EndsWith("'"));
}
// trim off leading and trailing single quotes
m = m.Substring(1, m.Length - 2);
}
current = new NameCriterion
{
MatchingFileSpec = m,
Operator = c
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
}
break;
case "attrs":
case "attributes":
case "type":
{
if (tokens.Length <= i + 2)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
ComparisonOperator c =
(ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
current = (tok1 == "type")
? (SelectionCriterion) new TypeCriterion
{
AttributeString = tokens[i + 2],
Operator = c
}
: (SelectionCriterion) new AttributesCriterion
{
AttributeString = tokens[i + 2],
Operator = c
};
i += 2;
stateStack.Push(ParseState.CriterionDone);
}
break;
case "":
// NOP
stateStack.Push(ParseState.Whitespace);
break;
default:
throw new ArgumentException("'" + tokens[i] + "'");
}
state = stateStack.Peek();
if (state == ParseState.CriterionDone)
{
stateStack.Pop();
if (stateStack.Peek() == ParseState.ConjunctionPending)
{
while (stateStack.Peek() == ParseState.ConjunctionPending)
{
var cc = critStack.Pop() as CompoundCriterion;
cc.Right = current;
current = cc; // mark the parent as current (walk up the tree)
stateStack.Pop(); // the conjunction is no longer pending
state = stateStack.Pop();
if (state != ParseState.CriterionDone)
throw new ArgumentException("??");
}
}
else stateStack.Push(ParseState.CriterionDone); // not sure?
}
if (state == ParseState.Whitespace)
stateStack.Pop();
}
return current;
}