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Diffstat (limited to 'libical/src/libical/icalmemory.c')
| -rw-r--r-- | libical/src/libical/icalmemory.c | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/libical/src/libical/icalmemory.c b/libical/src/libical/icalmemory.c deleted file mode 100644 index 35544b14ee..0000000000 --- a/libical/src/libical/icalmemory.c +++ /dev/null @@ -1,244 +0,0 @@ -/* -*- Mode: C -*- - ====================================================================== - FILE: icalmemory.c - CREATOR: eric 30 June 1999 - - $Id$ - $Locker$ - - The contents of this file are subject to the Mozilla Public License - Version 1.0 (the "License"); you may not use this file except in - compliance with the License. You may obtain a copy of the License at - http://www.mozilla.org/MPL/ - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and - limitations under the License. - - The Original Code is icalmemory.h - The Initial Developer of the Original Code is Eric Busboom - - (C) COPYRIGHT 1999 The Software Studio. - http://www.softwarestudio.org - - ======================================================================*/ - -/* libical often passes strings back to the caller. To make these - * interfaces simple, I did not want the caller to have to pass in a - * memory buffer, but having libical pass out newly allocated memory - * makes it difficult to de-allocate the memory. - * - * The ring buffer in this scheme makes it possible for libical to pass - * out references to memory which the caller does not own, and be able - * to de-allocate the memory later. The ring allows libical to have - * several buffers active simultaneously, which is handy when creating - * string representations of components. */ - -#define ICALMEMORY_C - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - - -#include "icalmemory.h" -#include "icalerror.h" - -#include <stdio.h> /* for printf (debugging) */ -#include <stdlib.h> /* for malloc, realloc */ -#include <string.h> /* for memset() */ - -#define BUFFER_RING_SIZE 25 -#define MIN_BUFFER_SIZE 200 - -void* buffer_ring[BUFFER_RING_SIZE+1]; -int buffer_pos = 0; -int initialized = 0; - -/* Create a new temporary buffer on the ring. Libical owns these and wil deallocate them. */ -void* -icalmemory_tmp_buffer (size_t size) -{ - void *rtrn; - /* I don't think I need this -- I think static arrays are - initialized to 0 as a standard part of C, but I am not sure. */ - - if (initialized == 0){ - int i; - for(i=0; i<BUFFER_RING_SIZE; i++){ - buffer_ring[i] = 0; - } - initialized = 1; - } - - /* Ideally, this routine would re-use an existing buffer if it is - larger than the requested buffer. Maybe later.... */ - - if (size < MIN_BUFFER_SIZE){ - size = MIN_BUFFER_SIZE; - } - - if ( buffer_ring[buffer_pos] != 0){ - /*sprintf(buffer_ring[buffer_pos], "***DEALLOCATED MEMORY***: %d",buffer_pos);*/ - free( buffer_ring[buffer_pos]); - buffer_ring[buffer_pos] = 0; - } - - - rtrn = buffer_ring[buffer_pos] = (void*)malloc(size); - - memset(rtrn,0,size); - - if(++buffer_pos > BUFFER_RING_SIZE){ - buffer_pos = 0; - } - - return rtrn; -} - -void icalmemory_free_ring() -{ - - int i; - for(i=0; i<BUFFER_RING_SIZE; i++){ - if ( buffer_ring[i] != 0){ - free( buffer_ring[i]); - } - buffer_ring[i] = 0; - } - - initialized = 1; - -} - -/* Like strdup, but the buffer is on the ring. */ -char* -icalmemory_tmp_copy(char* str) -{ - char* b = icalmemory_tmp_buffer(strlen(str)+1); - - strcpy(b,str); - - return b; -} - - - -void -icalmemory_free_tmp_buffer (void* buf) -{ - if(buf == 0) - { - return; - } - - free(buf); -} - - -/* These buffer routines create memory the old fashioned way -- so the caller will have to delocate the new memory */ - -void* icalmemory_new_buffer(size_t size) -{ - /* HACK. need to handle out of memory case */ - void *b = malloc(size); - - memset(b,0,size); - - return b; -} - -void* icalmemory_resize_buffer(void* buf, size_t size) -{ - /* HACK. need to handle out of memory case */ - - return realloc(buf, size); -} - -void icalmemory_free_buffer(void* buf) -{ - free(buf); -} - -void -icalmemory_append_string(char** buf, char** pos, size_t* buf_size, - char* string) -{ - char *new_buf; - char *new_pos; - - size_t data_length, final_length, string_length; - -#ifndef ICAL_NO_INTERNAL_DEBUG - icalerror_check_arg_rv( (buf!=0),"buf"); - icalerror_check_arg_rv( (*buf!=0),"*buf"); - icalerror_check_arg_rv( (pos!=0),"pos"); - icalerror_check_arg_rv( (*pos!=0),"*pos"); - icalerror_check_arg_rv( (buf_size!=0),"buf_size"); - icalerror_check_arg_rv( (*buf_size!=0),"*buf_size"); - icalerror_check_arg_rv( (string!=0),"string"); -#endif - - string_length = strlen(string); - data_length = (size_t)*pos - (size_t)*buf; - final_length = data_length + string_length; - - if ( final_length >= (size_t) *buf_size) { - - - *buf_size = (*buf_size) * 2 + final_length; - - new_buf = realloc(*buf,*buf_size); - - new_pos = (void*)((size_t)new_buf + data_length); - - *pos = new_pos; - *buf = new_buf; - } - - strcpy(*pos, string); - - *pos += string_length; -} - - -void -icalmemory_append_char(char** buf, char** pos, size_t* buf_size, - char ch) -{ - char *new_buf; - char *new_pos; - - size_t data_length, final_length; - -#ifndef ICAL_NO_INTERNAL_DEBUG - icalerror_check_arg_rv( (buf!=0),"buf"); - icalerror_check_arg_rv( (*buf!=0),"*buf"); - icalerror_check_arg_rv( (pos!=0),"pos"); - icalerror_check_arg_rv( (*pos!=0),"*pos"); - icalerror_check_arg_rv( (buf_size!=0),"buf_size"); - icalerror_check_arg_rv( (*buf_size!=0),"*buf_size"); -#endif - - data_length = (size_t)*pos - (size_t)*buf; - - final_length = data_length + 2; - - if ( final_length > (size_t) *buf_size ) { - - - *buf_size = (*buf_size) * 2 + final_length +1; - - new_buf = realloc(*buf,*buf_size); - - new_pos = (void*)((size_t)new_buf + data_length); - - *pos = new_pos; - *buf = new_buf; - } - - **pos = ch; - *pos += 1; - -} |