sys/contrib/dev/acpica-unix-20050211/tools/acpisrc/asutils.c

   1
   2 /******************************************************************************
   3  *
   4  * Module Name: asutils - common utilities
   5  *              $Revision: 11 $
   6  *
   7  *****************************************************************************/
   8
   9 /******************************************************************************
  10  *
  11  * 1. Copyright Notice
  12  *
  13  * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
  14  * All rights reserved.
  15  *
  16  * 2. License
  17  *
  18  * 2.1. This is your license from Intel Corp. under its intellectual property
  19  * rights.  You may have additional license terms from the party that provided
  20  * you this software, covering your right to use that party's intellectual
  21  * property rights.
  22  *
  23  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  24  * copy of the source code appearing in this file ("Covered Code") an
  25  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  26  * base code distributed originally by Intel ("Original Intel Code") to copy,
  27  * make derivatives, distribute, use and display any portion of the Covered
  28  * Code in any form, with the right to sublicense such rights; and
  29  *
  30  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  31  * license (with the right to sublicense), under only those claims of Intel
  32  * patents that are infringed by the Original Intel Code, to make, use, sell,
  33  * offer to sell, and import the Covered Code and derivative works thereof
  34  * solely to the minimum extent necessary to exercise the above copyright
  35  * license, and in no event shall the patent license extend to any additions
  36  * to or modifications of the Original Intel Code.  No other license or right
  37  * is granted directly or by implication, estoppel or otherwise;
  38  *
  39  * The above copyright and patent license is granted only if the following
  40  * conditions are met:
  41  *
  42  * 3. Conditions
  43  *
  44  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  45  * Redistribution of source code of any substantial portion of the Covered
  46  * Code or modification with rights to further distribute source must include
  47  * the above Copyright Notice, the above License, this list of Conditions,
  48  * and the following Disclaimer and Export Compliance provision.  In addition,
  49  * Licensee must cause all Covered Code to which Licensee contributes to
  50  * contain a file documenting the changes Licensee made to create that Covered
  51  * Code and the date of any change.  Licensee must include in that file the
  52  * documentation of any changes made by any predecessor Licensee.  Licensee
  53  * must include a prominent statement that the modification is derived,
  54  * directly or indirectly, from Original Intel Code.
  55  *
  56  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  57  * Redistribution of source code of any substantial portion of the Covered
  58  * Code or modification without rights to further distribute source must
  59  * include the following Disclaimer and Export Compliance provision in the
  60  * documentation and/or other materials provided with distribution.  In
  61  * addition, Licensee may not authorize further sublicense of source of any
  62  * portion of the Covered Code, and must include terms to the effect that the
  63  * license from Licensee to its licensee is limited to the intellectual
  64  * property embodied in the software Licensee provides to its licensee, and
  65  * not to intellectual property embodied in modifications its licensee may
  66  * make.
  67  *
  68  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  69  * substantial portion of the Covered Code or modification must reproduce the
  70  * above Copyright Notice, and the following Disclaimer and Export Compliance
  71  * provision in the documentation and/or other materials provided with the
  72  * distribution.
  73  *
  74  * 3.4. Intel retains all right, title, and interest in and to the Original
  75  * Intel Code.
  76  *
  77  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  78  * Intel shall be used in advertising or otherwise to promote the sale, use or
  79  * other dealings in products derived from or relating to the Covered Code
  80  * without prior written authorization from Intel.
  81  *
  82  * 4. Disclaimer and Export Compliance
  83  *
  84  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  85  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  86  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  87  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  88  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  89  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  90  * PARTICULAR PURPOSE.
  91  *
  92  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  93  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  94  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  95  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  96  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  97  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  98  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  99  * LIMITED REMEDY.
 100  *
 101  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 102  * software or system incorporating such software without first obtaining any
 103  * required license or other approval from the U. S. Department of Commerce or
 104  * any other agency or department of the United States Government.  In the
 105  * event Licensee exports any such software from the United States or
 106  * re-exports any such software from a foreign destination, Licensee shall
 107  * ensure that the distribution and export/re-export of the software is in
 108  * compliance with all laws, regulations, orders, or other restrictions of the
 109  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 110  * any of its subsidiaries will export/re-export any technical data, process,
 111  * software, or service, directly or indirectly, to any country for which the
 112  * United States government or any agency thereof requires an export license,
 113  * other governmental approval, or letter of assurance, without first obtaining
 114  * such license, approval or letter.
 115  *
 116  *****************************************************************************/
 117
 118 #include "acpisrc.h"
 119
 120
 121 /******************************************************************************
 122  *
 123  * FUNCTION:    AsSkipUntilChar
 124  *
 125  * DESCRIPTION: Find the next instance of the input character
 126  *
 127  ******************************************************************************/
 128
 129 char *
 130 AsSkipUntilChar (
 131     char                    *Buffer,
 132     char                    Target)
 133 {
 134
 135     while (*Buffer != Target)
 136     {
 137         if (!*Buffer)
 138         {
 139             return NULL;
 140         }
 141
 142         Buffer++;
 143     }
 144
 145     return (Buffer);
 146 }
 147
 148
 149 /******************************************************************************
 150  *
 151  * FUNCTION:    AsSkipPastChar
 152  *
 153  * DESCRIPTION: Find the next instance of the input character, return a buffer
 154  *              pointer to this character+1.
 155  *
 156  ******************************************************************************/
 157
 158 char *
 159 AsSkipPastChar (
 160     char                    *Buffer,
 161     char                    Target)
 162 {
 163
 164     while (*Buffer != Target)
 165     {
 166         if (!*Buffer)
 167         {
 168             return NULL;
 169         }
 170
 171         Buffer++;
 172     }
 173
 174     Buffer++;
 175
 176     return (Buffer);
 177 }
 178
 179
 180 /******************************************************************************
 181  *
 182  * FUNCTION:    AsReplaceData
 183  *
 184  * DESCRIPTION: This function inserts and removes data from the file buffer.
 185  *              if more data is inserted than is removed, the data in the buffer
 186  *              is moved to make room.  If less data is inserted than is removed,
 187  *              the remaining data is moved to close the hole.
 188  *
 189  ******************************************************************************/
 190
 191 char *
 192 AsReplaceData (
 193     char                    *Buffer,
 194     UINT32                  LengthToRemove,
 195     char                    *BufferToAdd,
 196     UINT32                  LengthToAdd)
 197 {
 198     UINT32                  BufferLength;
 199
 200
 201     /*
 202      * Buffer is a string, so the length must include the terminating zero
 203      */
 204     BufferLength = strlen (Buffer) + 1;
 205
 206     if (LengthToRemove != LengthToAdd)
 207     {
 208         /*
 209          * Move some of the existing data
 210          * 1) If adding more bytes than removing, make room for the new data
 211          * 2) if removing more bytes than adding, delete the extra space
 212          */
 213         if (LengthToRemove > 0)
 214         {
 215             Gbl_MadeChanges = TRUE;
 216             memmove ((Buffer + LengthToAdd), (Buffer + LengthToRemove), (BufferLength - LengthToRemove));
 217         }
 218     }
 219
 220     /*
 221      * Now we can move in the new data
 222      */
 223     if (LengthToAdd > 0)
 224     {
 225         Gbl_MadeChanges = TRUE;
 226         memmove (Buffer, BufferToAdd, LengthToAdd);
 227     }
 228
 229     return (Buffer + LengthToAdd);
 230 }
 231
 232
 233 /******************************************************************************
 234  *
 235  * FUNCTION:    AsInsertData
 236  *
 237  * DESCRIPTION: This function inserts and removes data from the file buffer.
 238  *              if more data is inserted than is removed, the data in the buffer
 239  *              is moved to make room.  If less data is inserted than is removed,
 240  *              the remaining data is moved to close the hole.
 241  *
 242  ******************************************************************************/
 243
 244 char *
 245 AsInsertData (
 246     char                    *Buffer,
 247     char                    *BufferToAdd,
 248     UINT32                  LengthToAdd)
 249 {
 250     UINT32                  BufferLength;
 251
 252
 253     if (LengthToAdd > 0)
 254     {
 255         /*
 256          * Buffer is a string, so the length must include the terminating zero
 257          */
 258         BufferLength = strlen (Buffer) + 1;
 259
 260         /*
 261          * Move some of the existing data
 262          * 1) If adding more bytes than removing, make room for the new data
 263          * 2) if removing more bytes than adding, delete the extra space
 264          */
 265         Gbl_MadeChanges = TRUE;
 266         memmove ((Buffer + LengthToAdd), Buffer, BufferLength);
 267
 268         /*
 269          * Now we can move in the new data
 270          */
 271         memmove (Buffer, BufferToAdd, LengthToAdd);
 272     }
 273
 274     return (Buffer + LengthToAdd);
 275 }
 276
 277
 278 /******************************************************************************
 279  *
 280  * FUNCTION:    AsRemoveData
 281  *
 282  * DESCRIPTION: This function inserts and removes data from the file buffer.
 283  *              if more data is inserted than is removed, the data in the buffer
 284  *              is moved to make room.  If less data is inserted than is removed,
 285  *              the remaining data is moved to close the hole.
 286  *
 287  ******************************************************************************/
 288
 289 char *
 290 AsRemoveData (
 291     char                    *StartPointer,
 292     char                    *EndPointer)
 293 {
 294     UINT32                  BufferLength;
 295
 296
 297     /*
 298      * Buffer is a string, so the length must include the terminating zero
 299      */
 300     BufferLength = strlen (EndPointer) + 1;
 301
 302     Gbl_MadeChanges = TRUE;
 303     memmove (StartPointer, EndPointer, BufferLength);
 304
 305     return (StartPointer);
 306 }
 307