| /****************************************************************************** |
| * |
| * Module Name: asutils - common utilities |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "acpisrc.h" |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AsSkipUntilChar |
| * |
| * DESCRIPTION: Find the next instance of the input character |
| * |
| ******************************************************************************/ |
| |
| char * |
| AsSkipUntilChar ( |
| char *Buffer, |
| char Target) |
| { |
| |
| while (*Buffer != Target) |
| { |
| if (!*Buffer) |
| { |
| return (NULL); |
| } |
| |
| Buffer++; |
| } |
| |
| return (Buffer); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AsSkipPastChar |
| * |
| * DESCRIPTION: Find the next instance of the input character, return a buffer |
| * pointer to this character+1. |
| * |
| ******************************************************************************/ |
| |
| char * |
| AsSkipPastChar ( |
| char *Buffer, |
| char Target) |
| { |
| |
| while (*Buffer != Target) |
| { |
| if (!*Buffer) |
| { |
| return (NULL); |
| } |
| |
| Buffer++; |
| } |
| |
| Buffer++; |
| return (Buffer); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AsReplaceData |
| * |
| * DESCRIPTION: This function inserts and removes data from the file buffer. |
| * if more data is inserted than is removed, the data in the buffer |
| * is moved to make room. If less data is inserted than is removed, |
| * the remaining data is moved to close the hole. |
| * |
| ******************************************************************************/ |
| |
| char * |
| AsReplaceData ( |
| char *Buffer, |
| UINT32 LengthToRemove, |
| char *BufferToAdd, |
| UINT32 LengthToAdd) |
| { |
| UINT32 BufferLength; |
| |
| |
| /* |
| * Buffer is a string, so the length must include the terminating zero |
| */ |
| BufferLength = strlen (Buffer) + 1; |
| |
| if (LengthToRemove != LengthToAdd) |
| { |
| /* |
| * Move some of the existing data |
| * 1) If adding more bytes than removing, make room for the new data |
| * 2) if removing more bytes than adding, delete the extra space |
| */ |
| if (LengthToRemove > 0) |
| { |
| Gbl_MadeChanges = TRUE; |
| memmove ((Buffer + LengthToAdd), (Buffer + LengthToRemove), |
| (BufferLength - LengthToRemove)); |
| } |
| } |
| |
| /* |
| * Now we can move in the new data |
| */ |
| if (LengthToAdd > 0) |
| { |
| Gbl_MadeChanges = TRUE; |
| memmove (Buffer, BufferToAdd, LengthToAdd); |
| } |
| |
| return (Buffer + LengthToAdd); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AsInsertData |
| * |
| * DESCRIPTION: This function inserts and removes data from the file buffer. |
| * if more data is inserted than is removed, the data in the buffer |
| * is moved to make room. If less data is inserted than is removed, |
| * the remaining data is moved to close the hole. |
| * |
| ******************************************************************************/ |
| |
| char * |
| AsInsertData ( |
| char *Buffer, |
| char *BufferToAdd, |
| UINT32 LengthToAdd) |
| { |
| UINT32 BufferLength; |
| |
| |
| if (LengthToAdd > 0) |
| { |
| /* |
| * Buffer is a string, so the length must include the terminating zero |
| */ |
| BufferLength = strlen (Buffer) + 1; |
| |
| /* |
| * Move some of the existing data |
| * 1) If adding more bytes than removing, make room for the new data |
| * 2) if removing more bytes than adding, delete the extra space |
| */ |
| Gbl_MadeChanges = TRUE; |
| memmove ((Buffer + LengthToAdd), Buffer, BufferLength); |
| |
| /* |
| * Now we can move in the new data |
| */ |
| memmove (Buffer, BufferToAdd, LengthToAdd); |
| } |
| |
| return (Buffer + LengthToAdd); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AsRemoveData |
| * |
| * DESCRIPTION: This function inserts and removes data from the file buffer. |
| * if more data is inserted than is removed, the data in the buffer |
| * is moved to make room. If less data is inserted than is removed, |
| * the remaining data is moved to close the hole. |
| * |
| ******************************************************************************/ |
| |
| char * |
| AsRemoveData ( |
| char *StartPointer, |
| char *EndPointer) |
| { |
| UINT32 BufferLength; |
| |
| |
| /* |
| * Buffer is a string, so the length must include the terminating zero |
| */ |
| BufferLength = strlen (EndPointer) + 1; |
| |
| Gbl_MadeChanges = TRUE; |
| memmove (StartPointer, EndPointer, BufferLength); |
| |
| return (StartPointer); |
| } |