1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.ui.launchVariables;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsMessages;
/**
* Expands a resource type variable into the desired
* result format.
* <p>
* This class is not intended to be extended by clients.
* </p>
*/
public class ResourceExpander extends DefaultVariableExpander {
/**
* Expands the variable to a resource.
*/
protected IResource expand(String varValue, ExpandVariableContext context) {
if (varValue != null && varValue.length() > 0) {
return expandToMember(varValue);
} else {
return expandUsingContext(context);
}
}
/**
* Expands using the current context information.
* By default, return the selected resource of the
* context.
*/
protected IResource expandUsingContext(ExpandVariableContext context) {
return context.getSelectedResource();
}
/**
* Expands the variable value to a resource. The value
* will not be <code>null</code> nor empty. By default,
* lookup the member from the workspace root.
*/
protected IResource expandToMember(String varValue) {
return getWorkspaceRoot().findMember(varValue);
}
/**
* @see IVariableExpander#getPath(String, String, ExpandVariableContext)
*/
public IPath getPath(String varTag, String varValue, ExpandVariableContext context) throws CoreException {
IResource resource = expand(varValue, context);
if (resource != null) {
if (isPathVariable(varTag)) {
return resource.getFullPath();
} else {
return resource.getLocation();
}
}
throwExpansionException(varTag, LaunchConfigurationsMessages.getString("ResourceExpander.No_resource_selected._1")); //$NON-NLS-1$
return null;
}
/**
* Returns whether the given variable tag is a known path
* variable tag. Path variable tags represent variables that
* expand to paths relative to the workspace root.
*/
private boolean isPathVariable(String varTag) {
return varTag.equals(IVariableConstants.VAR_CONTAINER_PATH) ||
varTag.equals(IVariableConstants.VAR_PROJECT_PATH) ||
varTag.equals(IVariableConstants.VAR_RESOURCE_PATH);
}
/**
* @see IVariableExpander#getResources(String, String, ExpandVariableContext)
*/
public IResource[] getResources(String varTag, String varValue, ExpandVariableContext context) throws CoreException {
IResource resource = expand(varValue, context);
if (resource != null) {
return new IResource[] {resource};
}
throwExpansionException(varTag, LaunchConfigurationsMessages.getString("ResourceExpander.No_resource_selected._2")); //$NON-NLS-1$
return null;
}
/**
* Returns the workspace root resource.
*/
protected final IWorkspaceRoot getWorkspaceRoot() {
return ResourcesPlugin.getWorkspace().getRoot();
}
/**
* Returns a string representation of the path to a file or directory
* for the given variable tag and value or <code>null</code>.
*
* @see IVariableExpander#getText(String, String, ExpandVariableContext)
*/
public String getText(String varTag, String varValue, ExpandVariableContext context) throws CoreException {
IPath path= getPath(varTag, varValue, context);
if (path != null) {
return path.toOSString();
}
throwExpansionException(varTag, LaunchConfigurationsMessages.getString("ResourceExpander.No_resource_selected._3")); //$NON-NLS-1$
return null;
}
}
|
