org.fife.rsta.ac.sh.ShellFunctionCompletion Maven / Gradle / Ivy
/*
* 03/21/2010
*
* Copyright (C) 2010 Robert Futrell
* robert_futrell at users.sourceforge.net
* http://fifesoft.com/rsyntaxtextarea
*
* This library is distributed under a modified BSD license. See the included
* RSTALanguageSupport.License.txt file for details.
*/
package org.fife.rsta.ac.sh;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.fife.rsta.ac.OutputCollector;
import org.fife.ui.autocomplete.CompletionProvider;
import org.fife.ui.autocomplete.FunctionCompletion;
/**
* Completion for Unix shell "functions" (command line utilities).
*
* @author Robert Futrell
* @version 1.0
*/
public class ShellFunctionCompletion extends FunctionCompletion {
/**
* Constructor.
*
* @param provider
* @param name
* @param returnType
*/
public ShellFunctionCompletion(CompletionProvider provider, String name,
String returnType) {
super(provider, name, returnType);
}
/**
* {@inheritDoc}
*/
@Override
public String getSummary() {
String summary = null;
if (ShellCompletionProvider.getUseLocalManPages()) {
summary = getSummaryFromManPage();
}
//else { // Don't use else - fallback for if man isn't found
if (summary==null) {
summary = super.getSummary();
}
return summary;
}
/**
* Gets a summary of this function from the local system's man pages.
*
* @return The summary.
*/
private String getSummaryFromManPage() {
Process p = null;
String[] cmd = { "/usr/bin/man", getName() };
try {
p = Runtime.getRuntime().exec(cmd);
} catch (IOException ioe) {
ioe.printStackTrace();
return null;
}
// TODO: Launch waitFor() in a thread and interrupt after set time
OutputCollector stdout = new OutputCollector(p.getInputStream());
Thread t = new Thread(stdout);
t.start();
int rc = 0;
try {
rc = p.waitFor();
t.join();
//System.out.println(rc);
} catch (InterruptedException ie) {
ie.printStackTrace();
}
CharSequence output = null;
if (rc==0) {
output = stdout.getOutput();
if (output!=null && output.length()>0) {
output = manToHtml(output);
}
}
return output==null ? null : output.toString();
}
private static final StringBuffer manToHtml(CharSequence text) {
// text = text.replaceAll("<", "<").replaceAll(">", ">");
Pattern p = Pattern.compile("(?:_\\010.)+|(?:(.)\\010\\1)+");//"(?:.\\010.)+");
Matcher m = p.matcher(text);
StringBuffer sb = new StringBuffer("");
while ((m.find())) {
System.out.println("... found '" + m.group() + "'");
String group = m.group();
if (group.startsWith("_")) {
sb.append("");
String replacement = group.replaceAll("_\\010", "");
replacement = quoteReplacement(replacement);
m.appendReplacement(sb, replacement);
System.out.println("--- '" + replacement);
sb.append("");
}
else {
String replacement = group.replaceAll(".\\010.", "");
replacement = quoteReplacement(replacement);
m.appendReplacement(sb, replacement);
System.out.println("--- '" + replacement);
}
}
m.appendTail(sb);
//System.out.println(sb.toString());
return sb;
}
// Matcher.quoteReplacement() in 1.5.
private static String quoteReplacement(String text) {
if (text.indexOf('$')>-1 || text.indexOf('\\')>-1) {
StringBuffer sb = new StringBuffer();
for (int i=0; i