Mercurial > hg > cdb

comparison buffer.h @ 0:2cb46628feec

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
from cdb-0.75 per http://cr.yp.to/cdb.html, retrieved 2025-01-03, contents appear to have been create on 2000-02-19
author Henry S. Thompson <ht@inf.ed.ac.uk>
date Wed, 29 Jan 2025 10:50:34 +0000
parents
children 3bfef1f22a97
comparison
equal deleted inserted replaced
-1:000000000000 0:2cb46628feec
1 #ifndef BUFFER_H
2 #define BUFFER_H
3
4 typedef struct buffer {
5 char *x;
6 unsigned int p;
7 unsigned int n;
8 int fd;
9 int (*op)();
10 } buffer;
11
12 #define BUFFER_INIT(op,fd,buf,len) { (buf), 0, (len), (fd), (op) }
13 #define BUFFER_INSIZE 8192
14 #define BUFFER_OUTSIZE 8192
15
16 extern void buffer_init(buffer *,int (*)(),int,char *,unsigned int);
17
18 extern int buffer_flush(buffer *);
19 extern int buffer_put(buffer *,char *,unsigned int);
20 extern int buffer_putalign(buffer *,char *,unsigned int);
21 extern int buffer_putflush(buffer *,char *,unsigned int);
22 extern int buffer_puts(buffer *,char *);
23 extern int buffer_putsalign(buffer *,char *);
24 extern int buffer_putsflush(buffer *,char *);
25
26 #define buffer_PUTC(s,c) \
27 ( ((s)->n != (s)->p) \
28 ? ( (s)->x[(s)->p++] = (c), 0 ) \
29 : buffer_put((s),&(c),1) \
30 )
31
32 extern int buffer_get(buffer *,char *,unsigned int);
33 extern int buffer_bget(buffer *,char *,unsigned int);
34 extern int buffer_feed(buffer *);
35
36 extern char *buffer_peek(buffer *);
37 extern void buffer_seek(buffer *,unsigned int);
38
39 #define buffer_PEEK(s) ( (s)->x + (s)->n )
40 #define buffer_SEEK(s,len) ( ( (s)->p -= (len) ) , ( (s)->n += (len) ) )
41
42 #define buffer_GETC(s,c) \
43 ( ((s)->p > 0) \
44 ? ( *(c) = (s)->x[(s)->n], buffer_SEEK((s),1), 1 ) \
45 : buffer_get((s),(c),1) \
46 )
47
48 extern int buffer_copy(buffer *,buffer *);
49
50 extern buffer *buffer_0;
51 extern buffer *buffer_0small;
52 extern buffer *buffer_1;
53 extern buffer *buffer_1small;
54 extern buffer *buffer_2;
55
56 #endif