1 /******************************************************************************
2 *
3 * Module Name: asutils - common utilities
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2023, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #include "acpisrc.h"
153
154
155 /******************************************************************************
156 *
157 * FUNCTION: AsSkipUntilChar
158 *
159 * DESCRIPTION: Find the next instance of the input character
160 *
161 ******************************************************************************/
162
163 char *
AsSkipUntilChar(char * Buffer,char Target)164 AsSkipUntilChar (
165 char *Buffer,
166 char Target)
167 {
168
169 while (*Buffer != Target)
170 {
171 if (!*Buffer)
172 {
173 return (NULL);
174 }
175
176 Buffer++;
177 }
178
179 return (Buffer);
180 }
181
182
183 /******************************************************************************
184 *
185 * FUNCTION: AsSkipPastChar
186 *
187 * DESCRIPTION: Find the next instance of the input character, return a buffer
188 * pointer to this character+1.
189 *
190 ******************************************************************************/
191
192 char *
AsSkipPastChar(char * Buffer,char Target)193 AsSkipPastChar (
194 char *Buffer,
195 char Target)
196 {
197
198 while (*Buffer != Target)
199 {
200 if (!*Buffer)
201 {
202 return (NULL);
203 }
204
205 Buffer++;
206 }
207
208 Buffer++;
209 return (Buffer);
210 }
211
212
213 /******************************************************************************
214 *
215 * FUNCTION: AsReplaceData
216 *
217 * DESCRIPTION: This function inserts and removes data from the file buffer.
218 * if more data is inserted than is removed, the data in the buffer
219 * is moved to make room. If less data is inserted than is removed,
220 * the remaining data is moved to close the hole.
221 *
222 ******************************************************************************/
223
224 char *
AsReplaceData(char * Buffer,UINT32 LengthToRemove,char * BufferToAdd,UINT32 LengthToAdd)225 AsReplaceData (
226 char *Buffer,
227 UINT32 LengthToRemove,
228 char *BufferToAdd,
229 UINT32 LengthToAdd)
230 {
231 UINT32 BufferLength;
232
233
234 /*
235 * Buffer is a string, so the length must include the terminating zero
236 */
237 BufferLength = strlen (Buffer) + 1;
238
239 if (LengthToRemove != LengthToAdd)
240 {
241 /*
242 * Move some of the existing data
243 * 1) If adding more bytes than removing, make room for the new data
244 * 2) if removing more bytes than adding, delete the extra space
245 */
246 Gbl_MadeChanges = TRUE;
247 memmove ((Buffer + LengthToAdd), (Buffer + LengthToRemove),
248 (BufferLength - LengthToRemove));
249 }
250
251 /*
252 * Now we can move in the new data
253 */
254 if (LengthToAdd > 0)
255 {
256 Gbl_MadeChanges = TRUE;
257 memmove (Buffer, BufferToAdd, LengthToAdd);
258 }
259
260 return (Buffer + LengthToAdd);
261 }
262
263
264 /******************************************************************************
265 *
266 * FUNCTION: AsInsertData
267 *
268 * DESCRIPTION: This function inserts and removes data from the file buffer.
269 * if more data is inserted than is removed, the data in the buffer
270 * is moved to make room. If less data is inserted than is removed,
271 * the remaining data is moved to close the hole.
272 *
273 ******************************************************************************/
274
275 char *
AsInsertData(char * Buffer,char * BufferToAdd,UINT32 LengthToAdd)276 AsInsertData (
277 char *Buffer,
278 char *BufferToAdd,
279 UINT32 LengthToAdd)
280 {
281 UINT32 BufferLength;
282
283
284 if (LengthToAdd > 0)
285 {
286 /*
287 * Buffer is a string, so the length must include the terminating zero
288 */
289 BufferLength = strlen (Buffer) + 1;
290
291 /*
292 * Move some of the existing data
293 * 1) If adding more bytes than removing, make room for the new data
294 * 2) if removing more bytes than adding, delete the extra space
295 */
296 Gbl_MadeChanges = TRUE;
297 memmove ((Buffer + LengthToAdd), Buffer, BufferLength);
298
299 /*
300 * Now we can move in the new data
301 */
302 memmove (Buffer, BufferToAdd, LengthToAdd);
303 }
304
305 return (Buffer + LengthToAdd);
306 }
307
308
309 /******************************************************************************
310 *
311 * FUNCTION: AsRemoveData
312 *
313 * DESCRIPTION: This function inserts and removes data from the file buffer.
314 * if more data is inserted than is removed, the data in the buffer
315 * is moved to make room. If less data is inserted than is removed,
316 * the remaining data is moved to close the hole.
317 *
318 ******************************************************************************/
319
320 char *
AsRemoveData(char * StartPointer,char * EndPointer)321 AsRemoveData (
322 char *StartPointer,
323 char *EndPointer)
324 {
325 UINT32 BufferLength;
326
327
328 /*
329 * Buffer is a string, so the length must include the terminating zero
330 */
331 BufferLength = strlen (EndPointer) + 1;
332
333 Gbl_MadeChanges = TRUE;
334 memmove (StartPointer, EndPointer, BufferLength);
335
336 return (StartPointer);
337 }
338
