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