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#include <u.h>
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#include <libc.h>
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#include <oventi.h>
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#include "session.h"
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void vtDumpSome(Packet*);
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void
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vtDebug(VtSession *s, char *fmt, ...)
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{
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	va_list arg;
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	if(!s->debug)
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		return;
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	va_start(arg, fmt);
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	vfprint(2, fmt, arg);
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	va_end(arg);
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}
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void
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vtDebugMesg(VtSession *z, Packet *p, char *s)
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{
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	int op;
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	int tid;
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	int n;
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	uchar buf[100], *b;
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	if(!z->debug)
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		return;
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	n = packetSize(p);
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	if(n < 2) {
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		fprint(2, "runt packet%s", s);
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		return;
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	}
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	b = packetPeek(p, buf, 0, 2);
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	op = b[0];
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	tid = b[1];
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	fprint(2, "%c%d[%d] %d", ((op&1)==0)?'R':'Q', op, tid, n);
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	vtDumpSome(p);
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	fprint(2, "%s", s);
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}
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void
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vtDumpSome(Packet *pkt)
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{
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	int printable;
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	int i, n;
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	char buf[200], *q, *eq;
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	uchar data[32], *p;
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	n = packetSize(pkt);
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	printable = 1;
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	q = buf;
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	eq = buf + sizeof(buf);
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	q = seprint(q, eq, "(%d) '", n);
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	if(n > sizeof(data))
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		n = sizeof(data);
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	p = packetPeek(pkt, data, 0, n);
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	for(i=0; i<n && printable; i++)
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		if((p[i]<32 && p[i] !='\n' && p[i] !='\t') || p[i]>127)
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				printable = 0;
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	if(printable) {
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		for(i=0; i<n; i++)
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			q = seprint(q, eq, "%c", p[i]);
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	} else {
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		for(i=0; i<n; i++) {
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			if(i>0 && i%4==0)
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				q = seprint(q, eq, " ");
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			q = seprint(q, eq, "%.2X", p[i]);
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		}
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	}
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	seprint(q, eq, "'");
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	fprint(2, "%s", buf);
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}