// // FilterShellscript.cs // // Copyright (C) 2004-2006 Novell, Inc. // // // 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.IO; using System.Text; using Beagle.Daemon; using Beagle.Util; namespace Beagle.Filters { public class FilterShellscript : FilterSource { static string [] strKeyWords = { "bash", "mv", "cp", "ls", "ps", "exit", "export", "echo", "if", "else", "elif", "then", "fi", "while", "do", "done", "until", "case", "in", "esac", "select", "for", "function", "time", "break", "cd", "continue", "declare", "fg", "kill", "pwd", "read", "return", "set", "test", "unset", "wait", "touch" }; private int count; public FilterShellscript () { // FIXME: Add other shell mime-types, if they are different AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/x-shellscript")); } override protected void DoOpen (FileInfo info) { foreach (string keyword in strKeyWords) KeyWordsHash [keyword] = true; SrcLangType = LangType.Shell_Style; } override protected void DoPullSetup () { this.count = 0; } override protected void DoPull () { string str = TextReader.ReadLine (); if (str == null) Finished (); else { // Shell scripts usually aren't very big, so // never index more than 20k. This prevents us // from going insane when we *do* index large // ones that embed binaries in them. We're // really only counting characters here, but we // don't need to be very precise. this.count += str.Length; ExtractTokens (str); if (this.count > 20 * 1024) { Log.Debug ("Truncating shell script to 20k"); Finished (); } } } } }