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//
// 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 ()
{
AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/x-shellscript"));
AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/x-sh"));
}
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 ();
}
}
}
}
}
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