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Man Pages


Manual Reference Pages  -  LIBOWFAT_BUFFER_INIT (3)

NAME

buffer_init - initialize buffer structure

CONTENTS

Syntax
Description
Example

SYNTAX

#include <buffer.h>

void buffer_init(buffer &b,
ssize_t (*op)(int,char*,size_t),
int fd, char* y, size_t ylen);

DESCRIPTION

buffer_init prepares b to store a string in y[0], y[1], ..., y[ylen-1]. Initially the string is empty.

buffer_init also prepares b to use the read/write operation specified by op and fd.

You can use

buffer b = BUFFER_INIT(op,fd,y,ylen);

to initialize b statically if op, fd, y, and ylen are compile-time constants.

You can call buffer_init again at any time. Note that this discards the currently buffered string.

EXAMPLE

#include <buffer.h>
#include <open.h>

char buf[4096];
int fd=open_read("/etc/services");
buffer input;

if (fd>=0) {
char x;
buffer_init(&input,read,fd,buf,sizeof buf);
while (buffer_get(&input,&x,1)==1) {
buffer_put(buffer_1,&x,1);
if (x==’\n’) break;
}
buffer_flush(buffer_1);
}

SEE ALSO

buffer_flush(3), buffer(3)
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