Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
branch: master
Fetching contributors…

Cannot retrieve contributors at this time

file 56 lines (48 sloc) 1.995 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
/*
* Implement 'seekable' sequence data on top of stream-oriented lower layer -
* allow client programs to look at any part of the sequence, not just
* in its natural order
*
* Copyright (C) 2011, Greg Benison
*
* 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 3 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 the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/

#include <stdlib.h>

static char *sequence;
static char *sequence_ptr;
int sequence_max_length;

static char *comment;
static char *comment_ptr;
int comment_max_length;

#define INIT_ARRAY(name, init_length) {\
name##_max_length = init_length; \
name = (char*)malloc(name##_max_length); \
name##_ptr = name; \
}

#define PUSH_ARRAY(name, c) {\
if ((name##_ptr - name) >= (name##_max_length - 1)) \
{name##_max_length *= 2; \
int len = name##_ptr - name; \
name = realloc(name, name##_max_length); name##_ptr = name + len;} \
*name##_ptr = c; ++name##_ptr; }

extern void process_sequence(char*, char*);

void init_sequence() { INIT_ARRAY(sequence, 128); }
void handle_sequence(char c) { PUSH_ARRAY(sequence, c); }
void terminate_sequence() { *sequence_ptr = 0;
                               process_sequence(comment, sequence); }

void init_comment() { INIT_ARRAY(comment, 32); }
void handle_comment(char c) { PUSH_ARRAY(comment, c); }
void terminate_comment() { *comment_ptr = 0; }
Something went wrong with that request. Please try again.