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From: Ole Streicher <olebole@debian.org>
Date: Fri, 10 Mar 2017 09:39:11 +0100
Subject: Generate bash autocompletion script
This tries to extract as much information as possible from the source code.
---
build.xml | 8 +
.../uk/ac/starlink/ttools/build/BashComplete.java | 179 +++++++++++++++++++++
2 files changed, 187 insertions(+)
create mode 100644 src/main/uk/ac/starlink/ttools/build/BashComplete.java
diff --git a/build.xml b/build.xml
index 82dd20d..95bf4d9 100644
--- a/build.xml
+++ b/build.xml
@@ -1464,6 +1464,14 @@
fork="yes">
<sysproperty key="java.awt.headless" value="true"/>
</java>
+ <mkdir dir="${build.dir}/bash-completion"/>
+ <java classpathref="classpath"
+ classname="uk.ac.starlink.ttools.build.BashComplete"
+ failonerror="yes"
+ dir="${build.dir}/bash-completion"
+ fork="yes">
+ <sysproperty key="java.awt.headless" value="true"/>
+ </java>
<!-- Transform the user document to a multi-page HTML document. -->
</target>
diff --git a/src/main/uk/ac/starlink/ttools/build/BashComplete.java b/src/main/uk/ac/starlink/ttools/build/BashComplete.java
new file mode 100644
index 0000000..63c84a3
--- /dev/null
+++ b/src/main/uk/ac/starlink/ttools/build/BashComplete.java
@@ -0,0 +1,179 @@
+package uk.ac.starlink.ttools.build;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintWriter;
+import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import uk.ac.starlink.task.BooleanParameter;
+import uk.ac.starlink.task.ChoiceParameter;
+import uk.ac.starlink.task.InputStreamParameter;
+import uk.ac.starlink.task.Parameter;
+import uk.ac.starlink.task.Task;
+import uk.ac.starlink.ttools.Stilts;
+import uk.ac.starlink.ttools.filter.StepFactory;
+import uk.ac.starlink.ttools.task.FilterParameter;
+import uk.ac.starlink.ttools.task.InputFormatParameter;
+import uk.ac.starlink.ttools.task.LineTableEnvironment;
+import uk.ac.starlink.ttools.task.OutputFormatParameter;
+import uk.ac.starlink.ttools.task.XmlEncodingParameter;
+import uk.ac.starlink.util.LoadException;
+
+public class BashComplete {
+
+ public static String taskCompletition(String taskName)
+ throws LoadException {
+ Task task = Stilts.getTaskFactory().createObject( taskName );
+ Parameter[] params = task.getParameters();
+ LineTableEnvironment env = new LineTableEnvironment();
+ List outputFormats = env.getTableOutput().getKnownFormats();
+ List inputFormats = env.getTableFactory().getKnownFormats();
+ Collection charsets = Charset.availableCharsets().keySet();
+ String[] filters = StepFactory.getInstance().getFilterFactory().getNickNames();
+ String s = "\n_stilts_" + taskName + "() {\n" +
+ " local args=\"help";
+ for ( int i = 0; i < params.length; i++ ) {
+ s += " " + params[i].getName() + "=";
+ }
+ s += "\"\n" +
+ " local cur=\"${COMP_WORDS[$COMP_CWORD]/=/}\"\n" +
+ " local prev=\"${COMP_WORDS[COMP_CWORD-1]}\"\n" +
+ " if [[ $prev == \"=\" ]] ; then\n" +
+ " prev=\"${COMP_WORDS[COMP_CWORD-2]}\"\n" +
+ " fi\n" +
+ " case $prev in\n";
+ ArrayList<String> nousage = new ArrayList<String>();
+ ArrayList<String> bool = new ArrayList<String>();
+ for ( int i = 0; i < params.length; i++ ) {
+ if (params[i] instanceof BooleanParameter) {
+ bool.add(params[i].getName());
+ continue;
+ }
+ if (params[i] instanceof ChoiceParameter) {
+ s += completionCase(params[i].getName(), ((ChoiceParameter)params[i]).getOptionNames());
+ continue;
+ }
+ if (params[i] instanceof OutputFormatParameter) {
+ s += completionCase(params[i].getName(), outputFormats);
+ continue;
+ }
+ if (params[i] instanceof InputFormatParameter) {
+ s += completionCase(params[i].getName(), inputFormats);
+ continue;
+ }
+ if (params[i] instanceof InputStreamParameter) {
+ s += fileCompletionCase(params[i].getName());
+ continue;
+ }
+ if (params[i] instanceof FilterParameter) {
+ s += completionCase(params[i].getName(), filters);
+ continue;
+ }
+ if (params[i] instanceof XmlEncodingParameter) {
+ s += completionCase(params[i].getName(), charsets);
+ continue;
+ }
+ String[] u = params[i].getUsage().split("\\|");
+ if (u.length <= 1) {
+ nousage.add(params[i].getName());
+ continue;
+ }
+ s += completionCase(params[i].getName(), u);
+ }
+ if (bool.size() > 0) {
+ String[] bools = { "true", "false" };
+ s += completionCase(String.join("|", bool), bools);
+ }
+ if (nousage.size() > 0) {
+ s += " " + String.join("|", nousage) + ")\n" +
+ " COMPREPLY=( )\n" +
+ " ;;\n";
+ }
+ s += " *)\n" +
+ " compopt -o nospace\n" +
+ " COMPREPLY=( $(compgen -W \"$args\" -- $cur) )\n" +
+ " ;;\n" +
+ " esac\n" +
+ "}\n" ;
+ return s;
+ }
+
+ public static String completionCase(String name, Collection pattern) {
+ return " " + name + ")\n" +
+ " COMPREPLY=( " +
+ "$(compgen -W \"" + String.join(" ", pattern) + "\" -- ${cur}) " +
+ ")\n" +
+ " ;;\n";
+ }
+
+ public static String completionCase(String name, String[] pattern) {
+ return " " + name + ")\n" +
+ " COMPREPLY=( " +
+ "$(compgen -W \"" + String.join(" ", pattern) + "\" -- ${cur}) " +
+ ")\n" +
+ " ;;\n";
+ }
+
+ public static String fileCompletionCase(String name) {
+ return " " + name + ")\n" +
+ " COMPREPLY=( " +
+ "$(compgen -f -- ${cur}) " +
+ "$(compgen -d -- ${cur}) " +
+ ")\n" +
+ " ;;\n";
+ }
+
+ public static String stiltsCompletition(String[] taskNames) {
+ String[] options = {
+ "-help", "-version", "-verbose", "-allowunused", "-prompt",
+ "-bench", "-debug", "-batch", "-memory", "-disk", "-memgui",
+ "-checkversion", "-stdout", "-stderr"
+ };
+ return "_stilts() {\n" +
+ " local tasks=\""+ String.join(" ", taskNames) +"\"\n" +
+ " local args=\"" + String.join(" ", options) + "\"\n" +
+ " local cur=\"${COMP_WORDS[$COMP_CWORD]}\"\n" +
+ " local cmd=\"stilts\"\n" +
+ " for w in ${COMP_WORDS[@]} ; do\n" +
+ " for t in $tasks; do\n" +
+ " if [[ \"$w\" == \"$t\" ]] ; then\n" +
+ " cmd=stilts_\"$w\"\n" +
+ " fi\n" +
+ " done\n" +
+ " done\n" +
+ " case $cmd in\n" +
+ " stilts)\n" +
+ " if [[ \"$cur\" == -* ]] ; then\n" +
+ " COMPREPLY=( $(compgen -W \"$args\" -- $cur) )\n" +
+ " else\n" +
+ " COMPREPLY=( $(compgen -W \"$tasks\" -- $cur) )\n" +
+ " fi\n" +
+ " ;;\n" +
+ " *)\n" +
+ " _${cmd}\n" +
+ " ;;\n" +
+ " esac\n" +
+ "} &&\n";
+ }
+
+
+ public static void main(String[] args)
+ throws IOException, LoadException {
+ String[] taskNames = Stilts.getTaskFactory().getNickNames();
+ String fname = "stilts";
+ PrintWriter out = new PrintWriter(fname);
+ out.println("# stilts(1) completion -*- shell-script -*-");
+ for ( int i = 0; i < taskNames.length; i++ ) {
+ String taskName = taskNames[ i ];
+ out.print(taskCompletition(taskName));
+ }
+ out.print(stiltsCompletition(taskNames));
+ out.println("complete -F _stilts stilts\n");
+ out.println("# ex: ts=4 sw=4 et filetype=sh");
+ out.close();
+ }
+}
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