1 // ******************************************************************************
2 //
3 // Title: Force Field X.
4 // Description: Force Field X - Software for Molecular Biophysics.
5 // Copyright: Copyright (c) Michael J. Schnieders 2001-2025.
6 //
7 // This file is part of Force Field X.
8 //
9 // Force Field X is free software; you can redistribute it and/or modify it
10 // under the terms of the GNU General Public License version 3 as published by
11 // the Free Software Foundation.
12 //
13 // Force Field X is distributed in the hope that it will be useful, but WITHOUT
14 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15 // FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16 // details.
17 //
18 // You should have received a copy of the GNU General Public License along with
19 // Force Field X; if not, write to the Free Software Foundation, Inc., 59 Temple
20 // Place, Suite 330, Boston, MA 02111-1307 USA
21 //
22 // Linking this library statically or dynamically with other modules is making a
23 // combined work based on this library. Thus, the terms and conditions of the
24 // GNU General Public License cover the whole combination.
25 //
26 // As a special exception, the copyright holders of this library give you
27 // permission to link this library with independent modules to produce an
28 // executable, regardless of the license terms of these independent modules, and
29 // to copy and distribute the resulting executable under terms of your choice,
30 // provided that you also meet, for each linked independent module, the terms
31 // and conditions of the license of that module. An independent module is a
32 // module which is not derived from or based on this library. If you modify this
33 // library, you may extend this exception to your version of the library, but
34 // you are not obligated to do so. If you do not wish to do so, delete this
35 // exception statement from your version.
36 //
37 // ******************************************************************************
38 package ffx.openmm;
39
40 import com.sun.jna.Memory;
41 import com.sun.jna.Pointer;
42 import com.sun.jna.ptr.PointerByReference;
43
44 import static edu.uiowa.jopenmm.OpenMMLibrary.OpenMM_StringArray_append;
45 import static edu.uiowa.jopenmm.OpenMMLibrary.OpenMM_StringArray_create;
46 import static edu.uiowa.jopenmm.OpenMMLibrary.OpenMM_StringArray_destroy;
47 import static edu.uiowa.jopenmm.OpenMMLibrary.OpenMM_StringArray_get;
48 import static edu.uiowa.jopenmm.OpenMMLibrary.OpenMM_StringArray_getSize;
49 import static edu.uiowa.jopenmm.OpenMMLibrary.OpenMM_StringArray_resize;
50 import static edu.uiowa.jopenmm.OpenMMLibrary.OpenMM_StringArray_set;
51
52 /**
53 * String Array.
54 */
55 public class StringArray {
56
57 /**
58 * String Array Platform pointer.
59 */
60 private PointerByReference pointer;
61
62 /**
63 * OpenMM String Array constructor.
64 *
65 * @param size The size of the String Array.
66 */
67 public StringArray(int size) {
68 pointer = OpenMM_StringArray_create(size);
69 }
70
71 /**
72 * OpenMM String Array constructor.
73 *
74 * @param pointer The String Array pointer.
75 */
76 public StringArray(PointerByReference pointer) {
77 this.pointer = pointer;
78 }
79
80 /**
81 * Get the number of strings in the String Array.
82 *
83 * @return The number of strings in the String Array.
84 */
85 public int getSize() {
86 return OpenMM_StringArray_getSize(pointer);
87 }
88
89 /**
90 * Return the String at index i.
91 *
92 * @param i The index of the String to return.
93 * @return String The requested String.
94 */
95 public String get(int i) {
96 int size = getSize();
97 if (i < 0 || i >= size) {
98 return null;
99 }
100 Pointer string = OpenMM_StringArray_get(pointer, i);
101 if (string == null) {
102 return null;
103 }
104 return string.getString(0);
105 }
106
107 /**
108 * Resize the String Array.
109 *
110 * @param size The new size of the String Array.
111 */
112 public void resize(int size) {
113 OpenMM_StringArray_resize(pointer, size);
114 }
115
116 /**
117 * Append a String to the String Array.
118 *
119 * @param string The String to append.
120 */
121 public void append(String string) {
122 Pointer ref = new Memory(string.length() + 1);
123 ref.setString(0, string);
124 OpenMM_StringArray_append(pointer, ref);
125 }
126
127 /**
128 * Set the String at index i.
129 *
130 * @param i The index of the String to set.
131 * @param string The String to set.
132 */
133 public void set(int i, String string) {
134 Pointer ref = new Memory(string.length() + 1);
135 ref.setString(0, string);
136 OpenMM_StringArray_set(pointer, i, ref);
137 }
138
139 /**
140 * Destroy the String Array.
141 */
142 public void destroy() {
143 if (pointer != null) {
144 OpenMM_StringArray_destroy(pointer);
145 pointer = null;
146 }
147 }
148
149 }