1 /* Public domain. */ 2 3 #ifndef BUFFER_H 4 #define BUFFER_H 5 6 typedef struct buffer { 7 char *x; 8 unsigned int p; 9 unsigned int n; 10 int fd; 11 int (*op)(); 12 } buffer; 13 14 #define BUFFER_INIT(op,fd,buf,len) { (buf), 0, (len), (fd), (op) } 15 #define BUFFER_INSIZE 8192 16 #define BUFFER_OUTSIZE 8192 17 18 extern void buffer_init(buffer *,int (*)(),int,char *,unsigned int); 19 20 extern int buffer_flush(buffer *); 21 extern int buffer_put(buffer *,const char *,unsigned int); 22 extern int buffer_putalign(buffer *,const char *,unsigned int); 23 extern int buffer_putflush(buffer *,const char *,unsigned int); 24 extern int buffer_puts(buffer *,const char *); 25 extern int buffer_putsalign(buffer *,const char *); 26 extern int buffer_putsflush(buffer *,const char *); 27 28 #define buffer_PUTC(s,c) \ 29 ( ((s)->n != (s)->p) \ 30 ? ( (s)->x[(s)->p++] = (c), 0 ) \ 31 : buffer_put((s),&(c),1) \ 32 ) 33 34 extern int buffer_get(buffer *,char *,unsigned int); 35 extern int buffer_bget(buffer *,char *,unsigned int); 36 extern int buffer_feed(buffer *); 37 38 extern char *buffer_peek(buffer *); 39 extern void buffer_seek(buffer *,unsigned int); 40 41 #define buffer_PEEK(s) ( (s)->x + (s)->n ) 42 #define buffer_SEEK(s,len) ( ( (s)->p -= (len) ) , ( (s)->n += (len) ) ) 43 44 #define buffer_GETC(s,c) \ 45 ( ((s)->p > 0) \ 46 ? ( *(c) = (s)->x[(s)->n], buffer_SEEK((s),1), 1 ) \ 47 : buffer_get((s),(c),1) \ 48 ) 49 50 extern int buffer_copy(buffer *,buffer *); 51 52 extern int buffer_unixread(int,char *,unsigned int); 53 extern int buffer_unixwrite(int,const char *,unsigned int); 54 55 extern buffer *buffer_0; 56 extern buffer *buffer_0small; 57 extern buffer *buffer_1; 58 extern buffer *buffer_1small; 59 extern buffer *buffer_2; 60 61 #endif 62