mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-06 05:01:26 +00:00
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/*
|
|
buffer.c
|
|
|
|
console buffer support
|
|
|
|
Copyright (C) 2001 BillCurrie <bill@taniwha.org>
|
|
|
|
Author: BillCurrie <bill@taniwha.org>
|
|
Date: 2001/09/28
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
static __attribute__ ((unused)) const char rcsid[] =
|
|
"$Id$";
|
|
|
|
#ifdef HAVE_STRING_H
|
|
# include "string.h"
|
|
#endif
|
|
#ifdef HAVE_STRINGS_H
|
|
# include "strings.h"
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "QF/console.h"
|
|
|
|
con_buffer_t *
|
|
Con_CreateBuffer (size_t buffer_size, int max_lines)
|
|
{
|
|
con_buffer_t *buffer;
|
|
|
|
if (!(buffer = malloc (sizeof (con_buffer_t))))
|
|
return 0;
|
|
if (!(buffer->buffer = malloc (buffer_size)))
|
|
goto err;
|
|
buffer->buffer_size = buffer_size;
|
|
if (!(buffer->lines = calloc (max_lines, sizeof (con_line_t))))
|
|
goto err;
|
|
buffer->max_lines = max_lines;
|
|
buffer->num_lines = 1;
|
|
buffer->cur_line = 0;
|
|
buffer->lines[0].text = buffer->buffer;
|
|
return buffer;
|
|
err:
|
|
if (buffer->buffer)
|
|
free (buffer->buffer);
|
|
free (buffer);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
Con_DestroyBuffer (con_buffer_t *buffer)
|
|
{
|
|
free (buffer->buffer);
|
|
free (buffer->lines);
|
|
free (buffer);
|
|
}
|
|
|
|
void
|
|
Con_BufferAddText (con_buffer_t *buf, const char *text)
|
|
{
|
|
con_line_t *cur_line = &buf->lines[buf->cur_line];
|
|
con_line_t *tail_line;
|
|
size_t len = strlen (text);
|
|
byte *pos = cur_line->text + cur_line->len;
|
|
|
|
if (pos >= buf->buffer + buf->buffer_size)
|
|
pos -= buf->buffer_size;
|
|
tail_line = buf->lines + (buf->cur_line + buf->max_lines + 1
|
|
- buf->num_lines) % buf->max_lines;
|
|
if (len > buf->buffer_size) {
|
|
text += len - buf->buffer_size;
|
|
len = buf->buffer_size;
|
|
}
|
|
while (len--) {
|
|
byte c = *pos++ = *text++;
|
|
if (pos - buf->buffer >= buf->buffer_size)
|
|
pos = buf->buffer;
|
|
cur_line->len++;
|
|
if (pos == tail_line->text) {
|
|
if (buf->num_lines > 0)
|
|
buf->num_lines--;
|
|
tail_line->text = 0;
|
|
tail_line->len = 0;
|
|
tail_line++;
|
|
if (tail_line - buf->lines >= buf->max_lines)
|
|
tail_line = buf->lines;
|
|
}
|
|
if (c == '\n') {
|
|
if (buf->num_lines < buf->max_lines)
|
|
buf->num_lines++;
|
|
cur_line++;
|
|
buf->cur_line++;
|
|
if (cur_line - buf->lines >= buf->max_lines)
|
|
cur_line = buf->lines;
|
|
cur_line->text = pos;
|
|
cur_line->len = 0;
|
|
}
|
|
}
|
|
buf->cur_line %= buf->max_lines;
|
|
}
|