c9ex.c

#include <stdint.h>
#include <stdio.h>
#include <stdarg.h>
#include "c9.h"

C9ctx ctx;
uint32_t wrsize;
uint8_t wrbuf[64 * 1024];
uint8_t rdbuf[64 * 1024];

uint8_t *
myread(C9ctx *c, uint32_t size, int *err)
{
	(void)c;
	if(fread(rdbuf, size, 1, stdin) != 1) {
		*err = -1;
		return NULL;
	}
	return rdbuf;
}

uint8_t *
mybegin(C9ctx *c, uint32_t size)
{
	(void)c;
	wrsize = size;
	return wrbuf;
}

int
myend(C9ctx *c)
{
	(void)c;
	fwrite(wrbuf, wrsize, 1, stdout);
	fflush(stdout);
	return 0;
}

void
myr(C9ctx *c, C9r *r)
{
	switch(r->type) {
	case Rversion:
		fprintf(stderr, "version tag=%d\n", r->tag);
		fflush(stderr);
		break;
	}
}

void
myerror(const char *fmt, ...)
{
	va_list ap;
	va_start(ap, fmt);
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, "\n");
	va_end(ap);
}

int
main(int argc, char **argv)
{
	C9tag tag;

	ctx.read = myread;
	ctx.begin = mybegin;
	ctx.end = myend;
	ctx.r = myr;
	ctx.error = myerror;

	c9version(&ctx, &tag, 64 * 1024);
	return 0;
}