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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.tools.doclets.internal.toolkit.util;
import com.sun.tools.doclets.internal.toolkit.*;
import com.sun.javadoc.*;
import java.util.*;
/**
* Process and manage grouping of packages, as specified by "-group" option on
* the command line.
* <p>
* For example, if user has used -group option as
* -group "Core Packages" "java.*" -group "CORBA Packages" "org.omg.*", then
* the packages specified on the command line will be grouped according to their
* names starting with either "java." or "org.omg.". All the other packages
* which do not fall in the user given groups, are grouped in default group,
* named as either "Other Packages" or "Packages" depending upon if "-group"
* option used or not at all used respectively.
* </p>
* <p>
* Also the packages are grouped according to the longest possible match of
* their names with the grouping information provided. For example, if there
* are two groups, like -group "Lang" "java.lang" and -group "Core" "java.*",
* will put the package java.lang in the group "Lang" and not in group "Core".
* </p>
*
* This code is not part of an API.
* It is implementation that is subject to change.
* Do not use it as an API
*
* @author Atul M Dambalkar
*/
public class Group {
/**
* Map of regular expressions with the corresponding group name.
*/
private Map regExpGroupMap = new HashMap();
/**
* List of regular expressions sorted according to the length. Regular
* expression with longest length will be first in the sorted order.
*/
private List sortedRegExpList = new ArrayList();
/**
* List of group names in the same order as given on the command line.
*/
private List groupList = new ArrayList();
/**
* Map of non-regular expressions(possible package names) with the
* corresponding group name.
*/
private Map pkgNameGroupMap = new HashMap();
/**
* The global configuration information for this run.
*/
private final Configuration configuration;
/**
* Since we need to sort the keys in the reverse order(longest key first),
* the compare method in the implementing class is doing the reverse
* comparison.
*/
private static class MapKeyComparator implements Comparator {
public int compare(Object key1, Object key2) {
return ((String)key2).length() - ((String)key1).length();
}
}
public Group(Configuration configuration) {
this.configuration = configuration;
}
/**
* Depending upon the format of the package name provided in the "-group"
* option, generate two separate maps. There will be a map for mapping
* regular expression(only meta character allowed is '*' and that is at the
* end of the regular expression) on to the group name. And another map
* for mapping (possible) package names(if the name format doesen't contain
* meta character '*', then it is assumed to be a package name) on to the
* group name. This will also sort all the regular expressions found in the
* reverse order of their lengths, i.e. longest regular expression will be
* first in the sorted list.
*
* @param groupname The name of the group from -group option.
* @param pkgNameFormList List of the package name formats.
*/
public boolean checkPackageGroups(String groupname,
String pkgNameFormList) {
StringTokenizer strtok = new StringTokenizer(pkgNameFormList, ":");
if (groupList.contains(groupname)) {
configuration.message.warning("doclet.Groupname_already_used", groupname);
return false;
}
groupList.add(groupname);
while (strtok.hasMoreTokens()) {
String id = strtok.nextToken();
if (id.length() == 0) {
configuration.message.warning("doclet.Error_in_packagelist", groupname, pkgNameFormList);
return false;
}
if (id.endsWith("*")) {
id = id.substring(0, id.length() - 1);
if (foundGroupFormat(regExpGroupMap, id)) {
return false;
}
regExpGroupMap.put(id, groupname);
sortedRegExpList.add(id);
} else {
if (foundGroupFormat(pkgNameGroupMap, id)) {
return false;
}
pkgNameGroupMap.put(id, groupname);
}
}
Collections.sort(sortedRegExpList, new MapKeyComparator());
return true;
}
/**
* Search if the given map has given the package format.
*
* @param map Map to be searched.
* @param pkgFormat The pacakge format to search.
*
* @return true if package name format found in the map, else false.
*/
boolean foundGroupFormat(Map map, String pkgFormat) {
if (map.containsKey(pkgFormat)) {
configuration.message.error("doclet.Same_package_name_used", pkgFormat);
return true;
}
return false;
}
/**
* Group the packages according the grouping information provided on the
* command line. Given a list of packages, search each package name in
* regular expression map as well as package name map to get the
* corresponding group name. Create another map with mapping of group name
* to the package list, which will fall under the specified group. If any
* package doesen't belong to any specified group on the comamnd line, then
* a new group named "Other Packages" will be created for it. If there are
* no groups found, in other words if "-group" option is not at all used,
* then all the packages will be grouped under group "Packages".
*
* @param packages Packages specified on the command line.
*/
public Map groupPackages(PackageDoc[] packages) {
Map groupPackageMap = new HashMap();
String defaultGroupName =
(pkgNameGroupMap.isEmpty() && regExpGroupMap.isEmpty())?
configuration.message.getText("doclet.Packages") :
configuration.message.getText("doclet.Other_Packages");
// if the user has not used the default group name, add it
if (!groupList.contains(defaultGroupName)) {
groupList.add(defaultGroupName);
}
for (int i = 0; i < packages.length; i++) {
PackageDoc pkg = packages[i];
String pkgName = pkg.name();
String groupName = (String)pkgNameGroupMap.get(pkgName);
// if this package is not explicitly assigned to a group,
// try matching it to group specified by regular expression
if (groupName == null) {
groupName = regExpGroupName(pkgName);
}
// if it is in neither group map, put it in the default
// group
if (groupName == null) {
groupName = defaultGroupName;
}
getPkgList(groupPackageMap, groupName).add(pkg);
}
return groupPackageMap;
}
/**
* Search for package name in the sorted regular expression
* list, if found return the group name. If not, return null.
*
* @param pkgName Name of package to be found in the regular
* expression list.
*/
String regExpGroupName(String pkgName) {
for (int j = 0; j < sortedRegExpList.size(); j++) {
String regexp = (String)sortedRegExpList.get(j);
if (pkgName.startsWith(regexp)) {
return (String)regExpGroupMap.get(regexp);
}
}
return null;
}
/**
* For the given group name, return the package list, on which it is mapped.
* Create a new list, if not found.
*
* @param map Map to be searched for gorup name.
* @param groupname Group name to search.
*/
List getPkgList(Map map, String groupname) {
List list = (List)map.get(groupname);
if (list == null) {
list = new ArrayList();
map.put(groupname, list);
}
return list;
}
/**
* Return the list of groups, in the same order as specified
* on the command line.
*/
public List getGroupList() {
return groupList;
}
}