163 lines
3 KiB
C
163 lines
3 KiB
C
/***************************************************************************
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gb_buffer_temp.h
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(c) 2000-2017 Benoît Minisini <g4mba5@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#define __BUFFER_C
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "gb_common.h"
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#include "gb_error.h"
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#include "gb_alloc.h"
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#include "gb_buffer.h"
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void BUFFER_create(void *p_data)
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{
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BUFFER *buf;
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ALLOC(&buf, sizeof(BUFFER));
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buf->max = 0;
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buf->length = 0;
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*((void **)p_data) = BUFFER_TO_DATA(buf);
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}
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void BUFFER_delete(void *p_data)
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{
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void **data = (void **)p_data;
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BUFFER *buf = DATA_TO_BUFFER(*data);
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FREE(&buf);
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*data = NULL;
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}
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bool BUFFER_need(void *p_data, size_t size)
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{
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void **data = (void **)p_data;
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BUFFER *buffer = DATA_TO_BUFFER(*data);
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buffer->length += size;
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//fprintf(stderr, "BUFFER_need: %ld (%ld / %ld)\n", size, buffer->length, buffer->max);
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if (buffer->length > buffer->max)
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{
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while (buffer->length >= buffer->max)
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buffer->max += BUFFER_INC;
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REALLOC(&buffer, sizeof(char) * buffer->max + sizeof(BUFFER));
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*data = BUFFER_TO_DATA(buffer);
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}
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return FALSE;
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}
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offset_t BUFFER_add(void *p_data, const void *string, int len)
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{
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void **data = (void **)p_data;
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BUFFER *buffer = DATA_TO_BUFFER(*data);
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size_t pos;
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if (len < 0)
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len = strlen((const char *)string);
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pos = buffer->length;
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BUFFER_need(p_data, len);
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memcpy(*data + pos, string, len);
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//fprintf(stderr, ">> BUFFER_add\n");
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return pos;
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}
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void BUFFER_add_char(void *p_data, char c)
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{
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void **data = (void **)p_data;
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BUFFER *buffer = DATA_TO_BUFFER(*data);
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size_t pos;
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pos = buffer->length;
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BUFFER_need(p_data, 1);
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*(char *)(*data + pos) = c;
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}
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bool BUFFER_load_file(void *p_data, const char *name)
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{
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void **data;
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int fd;
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struct stat info;
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int old_len;
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int len, lenr;
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void *p;
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fd = open(name, O_RDONLY);
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if (fd < 0)
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return TRUE;
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if (fstat(fd, &info))
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{
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close(fd);
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return TRUE;
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}
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len = info.st_size;
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data = (void **)p_data;
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old_len = DATA_TO_BUFFER(*data)->length;
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BUFFER_need(p_data, len);
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data = (void **)p_data;
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p = *data + old_len;
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for(;;)
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{
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lenr = read(fd, p, len);
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if (lenr < 0)
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{
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close(fd);
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return TRUE;
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}
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if (lenr == len)
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break;
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p += lenr;
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len -= lenr;
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}
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close(fd);
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return FALSE;
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}
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