コード例 #1
0
ファイル: FileSelector.cs プロジェクト: ziya001/PointBlank
        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);
        }
コード例 #2
0
        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);
        }
コード例 #3
0
ファイル: FileSelector.cs プロジェクト: luckypal/Kiosk
        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);
        }
コード例 #4
0
ファイル: FileSelector.cs プロジェクト: RainsSoft/UJad-AI-VFS
        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;
        }