sys/external/intel-public/acpica/dist/tools/acpisrc/asutils.c

   1
   2 /******************************************************************************
   3  *
   4  * Module Name: asutils - common utilities
   5  *
   6  *****************************************************************************/
   7
   8 /******************************************************************************
   9  *
  10  * 1. Copyright Notice
  11  *
  12  * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp.
  13  * All rights reserved.
  14  *
  15  * 2. License
  16  *
  17  * 2.1. This is your license from Intel Corp. under its intellectual property
  18  * rights.  You may have additional license terms from the party that provided
  19  * you this software, covering your right to use that party's intellectual
  20  * property rights.
  21  *
  22  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  23  * copy of the source code appearing in this file ("Covered Code") an
  24  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  25  * base code distributed originally by Intel ("Original Intel Code") to copy,
  26  * make derivatives, distribute, use and display any portion of the Covered
  27  * Code in any form, with the right to sublicense such rights; and
  28  *
  29  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  30  * license (with the right to sublicense), under only those claims of Intel
  31  * patents that are infringed by the Original Intel Code, to make, use, sell,
  32  * offer to sell, and import the Covered Code and derivative works thereof
  33  * solely to the minimum extent necessary to exercise the above copyright
  34  * license, and in no event shall the patent license extend to any additions
  35  * to or modifications of the Original Intel Code.  No other license or right
  36  * is granted directly or by implication, estoppel or otherwise;
  37  *
  38  * The above copyright and patent license is granted only if the following
  39  * conditions are met:
  40  *
  41  * 3. Conditions
  42  *
  43  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  44  * Redistribution of source code of any substantial portion of the Covered
  45  * Code or modification with rights to further distribute source must include
  46  * the above Copyright Notice, the above License, this list of Conditions,
  47  * and the following Disclaimer and Export Compliance provision.  In addition,
  48  * Licensee must cause all Covered Code to which Licensee contributes to
  49  * contain a file documenting the changes Licensee made to create that Covered
  50  * Code and the date of any change.  Licensee must include in that file the
  51  * documentation of any changes made by any predecessor Licensee.  Licensee
  52  * must include a prominent statement that the modification is derived,
  53  * directly or indirectly, from Original Intel Code.
  54  *
  55  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  56  * Redistribution of source code of any substantial portion of the Covered
  57  * Code or modification without rights to further distribute source must
  58  * include the following Disclaimer and Export Compliance provision in the
  59  * documentation and/or other materials provided with distribution.  In
  60  * addition, Licensee may not authorize further sublicense of source of any
  61  * portion of the Covered Code, and must include terms to the effect that the
  62  * license from Licensee to its licensee is limited to the intellectual
  63  * property embodied in the software Licensee provides to its licensee, and
  64  * not to intellectual property embodied in modifications its licensee may
  65  * make.
  66  *
  67  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  68  * substantial portion of the Covered Code or modification must reproduce the
  69  * above Copyright Notice, and the following Disclaimer and Export Compliance
  70  * provision in the documentation and/or other materials provided with the
  71  * distribution.
  72  *
  73  * 3.4. Intel retains all right, title, and interest in and to the Original
  74  * Intel Code.
  75  *
  76  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  77  * Intel shall be used in advertising or otherwise to promote the sale, use or
  78  * other dealings in products derived from or relating to the Covered Code
  79  * without prior written authorization from Intel.
  80  *
  81  * 4. Disclaimer and Export Compliance
  82  *
  83  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  84  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  85  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  86  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  87  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  88  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  89  * PARTICULAR PURPOSE.
  90  *
  91  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  92  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  93  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  94  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  95  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  96  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  97  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  98  * LIMITED REMEDY.
  99  *
 100  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 101  * software or system incorporating such software without first obtaining any
 102  * required license or other approval from the U. S. Department of Commerce or
 103  * any other agency or department of the United States Government.  In the
 104  * event Licensee exports any such software from the United States or
 105  * re-exports any such software from a foreign destination, Licensee shall
 106  * ensure that the distribution and export/re-export of the software is in
 107  * compliance with all laws, regulations, orders, or other restrictions of the
 108  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 109  * any of its subsidiaries will export/re-export any technical data, process,
 110  * software, or service, directly or indirectly, to any country for which the
 111  * United States government or any agency thereof requires an export license,
 112  * other governmental approval, or letter of assurance, without first obtaining
 113  * such license, approval or letter.
 114  *
 115  *****************************************************************************/
 116
 117 #include "acpisrc.h"
 118
 119
 120 /******************************************************************************
 121  *
 122  * FUNCTION:    AsSkipUntilChar
 123  *
 124  * DESCRIPTION: Find the next instance of the input character
 125  *
 126  ******************************************************************************/
 127
 128 char *
 129 AsSkipUntilChar (
 130     char                    *Buffer,
 131     char                    Target)
 132 {
 133
 134     while (*Buffer != Target)
 135     {
 136         if (!*Buffer)
 137         {
 138             return NULL;
 139         }
 140
 141         Buffer++;
 142     }
 143
 144     return (Buffer);
 145 }
 146
 147
 148 /******************************************************************************
 149  *
 150  * FUNCTION:    AsSkipPastChar
 151  *
 152  * DESCRIPTION: Find the next instance of the input character, return a buffer
 153  *              pointer to this character+1.
 154  *
 155  ******************************************************************************/
 156
 157 char *
 158 AsSkipPastChar (
 159     char                    *Buffer,
 160     char                    Target)
 161 {
 162
 163     while (*Buffer != Target)
 164     {
 165         if (!*Buffer)
 166         {
 167             return NULL;
 168         }
 169
 170         Buffer++;
 171     }
 172
 173     Buffer++;
 174
 175     return (Buffer);
 176 }
 177
 178
 179 /******************************************************************************
 180  *
 181  * FUNCTION:    AsReplaceData
 182  *
 183  * DESCRIPTION: This function inserts and removes data from the file buffer.
 184  *              if more data is inserted than is removed, the data in the buffer
 185  *              is moved to make room.  If less data is inserted than is removed,
 186  *              the remaining data is moved to close the hole.
 187  *
 188  ******************************************************************************/
 189
 190 char *
 191 AsReplaceData (
 192     char                    *Buffer,
 193     UINT32                  LengthToRemove,
 194     char                    *BufferToAdd,
 195     UINT32                  LengthToAdd)
 196 {
 197     UINT32                  BufferLength;
 198
 199
 200     /*
 201      * Buffer is a string, so the length must include the terminating zero
 202      */
 203     BufferLength = strlen (Buffer) + 1;
 204
 205     if (LengthToRemove != LengthToAdd)
 206     {
 207         /*
 208          * Move some of the existing data
 209          * 1) If adding more bytes than removing, make room for the new data
 210          * 2) if removing more bytes than adding, delete the extra space
 211          */
 212         if (LengthToRemove > 0)
 213         {
 214             Gbl_MadeChanges = TRUE;
 215             memmove ((Buffer + LengthToAdd), (Buffer + LengthToRemove), (BufferLength - LengthToRemove));
 216         }
 217     }
 218
 219     /*
 220      * Now we can move in the new data
 221      */
 222     if (LengthToAdd > 0)
 223     {
 224         Gbl_MadeChanges = TRUE;
 225         memmove (Buffer, BufferToAdd, LengthToAdd);
 226     }
 227
 228     return (Buffer + LengthToAdd);
 229 }
 230
 231
 232 /******************************************************************************
 233  *
 234  * FUNCTION:    AsInsertData
 235  *
 236  * DESCRIPTION: This function inserts and removes data from the file buffer.
 237  *              if more data is inserted than is removed, the data in the buffer
 238  *              is moved to make room.  If less data is inserted than is removed,
 239  *              the remaining data is moved to close the hole.
 240  *
 241  ******************************************************************************/
 242
 243 char *
 244 AsInsertData (
 245     char                    *Buffer,
 246     char                    *BufferToAdd,
 247     UINT32                  LengthToAdd)
 248 {
 249     UINT32                  BufferLength;
 250
 251
 252     if (LengthToAdd > 0)
 253     {
 254         /*
 255          * Buffer is a string, so the length must include the terminating zero
 256          */
 257         BufferLength = strlen (Buffer) + 1;
 258
 259         /*
 260          * Move some of the existing data
 261          * 1) If adding more bytes than removing, make room for the new data
 262          * 2) if removing more bytes than adding, delete the extra space
 263          */
 264         Gbl_MadeChanges = TRUE;
 265         memmove ((Buffer + LengthToAdd), Buffer, BufferLength);
 266
 267         /*
 268          * Now we can move in the new data
 269          */
 270         memmove (Buffer, BufferToAdd, LengthToAdd);
 271     }
 272
 273     return (Buffer + LengthToAdd);
 274 }
 275
 276
 277 /******************************************************************************
 278  *
 279  * FUNCTION:    AsRemoveData
 280  *
 281  * DESCRIPTION: This function inserts and removes data from the file buffer.
 282  *              if more data is inserted than is removed, the data in the buffer
 283  *              is moved to make room.  If less data is inserted than is removed,
 284  *              the remaining data is moved to close the hole.
 285  *
 286  ******************************************************************************/
 287
 288 char *
 289 AsRemoveData (
 290     char                    *StartPointer,
 291     char                    *EndPointer)
 292 {
 293     UINT32                  BufferLength;
 294
 295
 296     /*
 297      * Buffer is a string, so the length must include the terminating zero
 298      */
 299     BufferLength = strlen (EndPointer) + 1;
 300
 301     Gbl_MadeChanges = TRUE;
 302     memmove (StartPointer, EndPointer, BufferLength);
 303
 304     return (StartPointer);
 305 }
 306