-//
-// BaseMachine.jvm.cs
-//
-// Author:
-// author: Dan Lewis (dlewis@gmx.co.uk)
-// (c) 2002
-// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
-//
-
-//
-// Permission is hereby granted, free of charge, to any person obtaining
-// a copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject to
-// the following conditions:
-//
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-//
-
-using System;
-using System.Collections;
-using System.Collections.Specialized;
-
-namespace System.Text.RegularExpressions
-{
- abstract class BaseMachine : IMachine
- {
- internal delegate void MatchAppendEvaluator (Match match, StringBuilder sb);
-
- public virtual string Replace (Regex regex, string input, string replacement, int count, int startat)
- {
- ReplacementEvaluator ev = new ReplacementEvaluator (regex, replacement);
- if (regex.RightToLeft)
- return RTLReplace (regex, input, new MatchEvaluator (ev.Evaluate), count, startat);
- else
- return LTRReplace (regex, input, new MatchAppendEvaluator (ev.EvaluateAppend), count, startat);
- }
-
- virtual public string [] Split (Regex regex, string input, int count, int startat)
- {
- ArrayList splits = new ArrayList ();
- if (count == 0)
- count = Int32.MaxValue;
-
- int ptr = startat;
- Match m = null;
- while (--count > 0) {
- if (m != null)
- m = m.NextMatch ();
- else
- m = regex.Match (input, ptr);
-
- if (!m.Success)
- break;
-
- if (regex.RightToLeft)
- splits.Add (input.Substring (m.Index + m.Length, ptr - m.Index - m.Length));
- else
- splits.Add (input.Substring (ptr, m.Index - ptr));
-
- int gcount = m.Groups.Count;
- for (int gindex = 1; gindex < gcount; gindex++) {
- Group grp = m.Groups [gindex];
- splits.Add (input.Substring (grp.Index, grp.Length));
- }
-
- if (regex.RightToLeft)
- ptr = m.Index;
- else
- ptr = m.Index + m.Length;
-
- }
-
- if (regex.RightToLeft && ptr >= 0)
- splits.Add (input.Substring (0, ptr));
- if (!regex.RightToLeft && ptr <= input.Length)
- splits.Add (input.Substring (ptr));
-
- return (string []) splits.ToArray (typeof (string));
- }
-
- virtual public Match Scan (Regex regex, string text, int start, int end)
- {
- throw new NotImplementedException ("Scan method must be implemented in derived classes");
- }
-
- virtual public string Result (string replacement, Match match)
- {
- return ReplacementEvaluator.Evaluate (replacement, match);
- }
-
- internal static string LTRReplace (Regex regex, string input, MatchAppendEvaluator evaluator, int count, int startat)
- {
- StringBuilder result = new StringBuilder ();
- int ptr = startat;
- int counter = count;
-
- result.Append (input, 0, ptr);
-
- Match m = regex.Match (input, startat);
- while (m.Success) {
- if (count != -1)
- if (counter-- <= 0)
- break;
- if (m.Index < ptr)
- throw new SystemException ("how");
- result.Append (input, ptr, m.Index - ptr);
- evaluator (m, result);
-
- ptr = m.Index + m.Length;
- m = m.NextMatch ();
- }
-
- if (ptr == startat)
- return input;
-
- result.Append (input, ptr, input.Length - ptr);
-
- return result.ToString ();
- }
-
- internal static string RTLReplace (Regex regex, string input, MatchEvaluator evaluator, int count, int startat)
- {
- int ptr = startat;
- int counter = count;
-
- StringCollection pieces = new StringCollection ();
- pieces.Add (input.Substring (ptr));
-
- Match m = regex.Match (input, startat);
- while (m.Success) {
- if (count != -1)
- if (counter-- <= 0)
- break;
- if (m.Index + m.Length > ptr)
- throw new SystemException ("how");
- pieces.Add (input.Substring (m.Index + m.Length, ptr - m.Index - m.Length));
- pieces.Add (evaluator (m));
-
- ptr = m.Index;
- m = m.NextMatch ();
- }
-
- if (ptr == startat)
- return input;
-
- StringBuilder result = new StringBuilder ();
-
- result.Append (input, 0, ptr);
- for (int i = pieces.Count; i > 0; )
- result.Append (pieces [--i]);
-
- pieces.Clear ();
-
- return result.ToString ();
- }
- }
-}
+//\r
+// BaseMachine.cs\r
+//\r
+// Author:\r
+// author: Dan Lewis (dlewis@gmx.co.uk)\r
+// (c) 2002\r
+// Copyright (C) 2005 Novell, Inc (http://www.novell.com)\r
+//\r
+\r
+//\r
+// Permission is hereby granted, free of charge, to any person obtaining\r
+// a copy of this software and associated documentation files (the\r
+// "Software"), to deal in the Software without restriction, including\r
+// without limitation the rights to use, copy, modify, merge, publish,\r
+// distribute, sublicense, and/or sell copies of the Software, and to\r
+// permit persons to whom the Software is furnished to do so, subject to\r
+// the following conditions:\r
+//\r
+// The above copyright notice and this permission notice shall be\r
+// included in all copies or substantial portions of the Software.\r
+//\r
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
+//\r
+\r
+using System;\r
+using System.Collections;\r
+using System.Collections.Specialized;\r
+\r
+namespace System.Text.RegularExpressions\r
+{\r
+ abstract class BaseMachine : IMachine\r
+ {\r
+ internal delegate void MatchAppendEvaluator (Match match, StringBuilder sb);\r
+\r
+ public virtual string Replace (Regex regex, string input, string replacement, int count, int startat)\r
+ {\r
+ ReplacementEvaluator ev = new ReplacementEvaluator (regex, replacement);\r
+ if (regex.RightToLeft)\r
+ return RTLReplace (regex, input, new MatchEvaluator (ev.Evaluate), count, startat);\r
+ else\r
+ return LTRReplace (regex, input, new MatchAppendEvaluator (ev.EvaluateAppend), count, startat, ev.NeedsGroupsOrCaptures);\r
+ }\r
+\r
+ virtual public string [] Split (Regex regex, string input, int count, int startat)\r
+ {\r
+ ArrayList splits = new ArrayList ();\r
+ if (count == 0)\r
+ count = Int32.MaxValue;\r
+\r
+ int ptr = startat;\r
+ Match m = null;\r
+ while (--count > 0) {\r
+ if (m != null)\r
+ m = m.NextMatch ();\r
+ else\r
+ m = regex.Match (input, ptr);\r
+\r
+ if (!m.Success)\r
+ break;\r
+\r
+ if (regex.RightToLeft)\r
+ splits.Add (input.Substring (m.Index + m.Length, ptr - m.Index - m.Length));\r
+ else\r
+ splits.Add (input.Substring (ptr, m.Index - ptr));\r
+\r
+ int gcount = m.Groups.Count;\r
+ for (int gindex = 1; gindex < gcount; gindex++) {\r
+ Group grp = m.Groups [gindex];\r
+ splits.Add (input.Substring (grp.Index, grp.Length));\r
+ }\r
+\r
+ if (regex.RightToLeft)\r
+ ptr = m.Index;\r
+ else\r
+ ptr = m.Index + m.Length;\r
+\r
+ }\r
+\r
+ if (regex.RightToLeft && ptr >= 0)\r
+ splits.Add (input.Substring (0, ptr));\r
+ if (!regex.RightToLeft && ptr <= input.Length)\r
+ splits.Add (input.Substring (ptr));\r
+\r
+ return (string []) splits.ToArray (typeof (string));\r
+ }\r
+\r
+ virtual public Match Scan (Regex regex, string text, int start, int end)\r
+ {\r
+ throw new NotImplementedException ("Scan method must be implemented in derived classes");\r
+ }\r
+\r
+ virtual public string Result (string replacement, Match match)\r
+ {\r
+ return ReplacementEvaluator.Evaluate (replacement, match);\r
+ }\r
+\r
+ internal string LTRReplace (Regex regex, string input, MatchAppendEvaluator evaluator, int count, int startat) {\r
+ return LTRReplace (regex, input, evaluator, count, startat, true);\r
+ }\r
+\r
+ internal string LTRReplace (Regex regex, string input, MatchAppendEvaluator evaluator, int count, int startat, bool needs_groups_or_captures)\r
+ {\r
+ this.needs_groups_or_captures = needs_groups_or_captures;\r
+ \r
+ Match m = Scan (regex, input, startat, input.Length);\r
+ if (!m.Success)\r
+ return input;\r
+\r
+ StringBuilder result = new StringBuilder (input.Length);\r
+ int ptr = startat;\r
+ int counter = count;\r
+\r
+ result.Append (input, 0, ptr);\r
+\r
+ do {\r
+ if (count != -1)\r
+ if (counter-- <= 0)\r
+ break;\r
+ if (m.Index < ptr)\r
+ throw new SystemException ("how");\r
+ result.Append (input, ptr, m.Index - ptr);\r
+ evaluator (m, result);\r
+\r
+ ptr = m.Index + m.Length;\r
+ m = m.NextMatch ();\r
+ } while (m.Success);\r
+\r
+ result.Append (input, ptr, input.Length - ptr);\r
+\r
+ return result.ToString ();\r
+ }\r
+\r
+ internal string RTLReplace (Regex regex, string input, MatchEvaluator evaluator, int count, int startat)\r
+ {\r
+ Match m = Scan (regex, input, startat, input.Length);\r
+ if (!m.Success)\r
+ return input;\r
+\r
+ int ptr = startat;\r
+ int counter = count;\r
+#if NET_2_1\r
+ var pieces = new System.Collections.Generic.List<string> ();\r
+#else\r
+ StringCollection pieces = new StringCollection ();\r
+#endif\r
+ \r
+ pieces.Add (input.Substring (ptr));\r
+\r
+ do {\r
+ if (count != -1)\r
+ if (counter-- <= 0)\r
+ break;\r
+ if (m.Index + m.Length > ptr)\r
+ throw new SystemException ("how");\r
+ pieces.Add (input.Substring (m.Index + m.Length, ptr - m.Index - m.Length));\r
+ pieces.Add (evaluator (m));\r
+\r
+ ptr = m.Index;\r
+ m = m.NextMatch ();\r
+ } while (m.Success);\r
+\r
+ StringBuilder result = new StringBuilder ();\r
+\r
+ result.Append (input, 0, ptr);\r
+ for (int i = pieces.Count; i > 0; )\r
+ result.Append (pieces [--i]);\r
+\r
+ pieces.Clear ();\r
+\r
+ return result.ToString ();\r
+ }\r
+\r
+ // Specify whenever Match objects created by this machine need to be fully\r
+ // built. If false, these can be omitted, avoiding some memory allocations and\r
+ // processing time.\r
+ protected bool needs_groups_or_captures = true; \r
+ }\r
+}\r
projects / mono.git / blobdiff