Import sources from 2011-03-30 iso image

1 files changed, 78 insertions, 0 deletions

diff --git a/sys/src/liboventi/debug.c b/sys/src/liboventi/debug.c
new file mode 100755
index 000000000..496860458
--- /dev/null
+++ b/sys/src/liboventi/debug.c
@@ -0,0 +1,78 @@
+#include <u.h>
+#include <libc.h>
+#include <oventi.h>
+#include "session.h"
+
+void vtDumpSome(Packet*);
+
+void
+vtDebug(VtSession *s, char *fmt, ...)
+{
+	va_list arg;
+
+	if(!s->debug)
+		return;
+
+	va_start(arg, fmt);
+	vfprint(2, fmt, arg);
+	va_end(arg);
+}
+
+void
+vtDebugMesg(VtSession *z, Packet *p, char *s)
+{
+	int op;
+	int tid;
+	int n;
+	uchar buf[100], *b;
+
+
+	if(!z->debug)
+		return;
+	n = packetSize(p);
+	if(n < 2) {
+		fprint(2, "runt packet%s", s);
+		return;
+	}
+	b = packetPeek(p, buf, 0, 2);
+	op = b[0];
+	tid = b[1];
+
+	fprint(2, "%c%d[%d] %d", ((op&1)==0)?'R':'Q', op, tid, n);
+	vtDumpSome(p);
+	fprint(2, "%s", s);
+}
+
+void
+vtDumpSome(Packet *pkt)
+{
+	int printable;
+	int i, n;
+	char buf[200], *q, *eq;
+	uchar data[32], *p;
+
+	n = packetSize(pkt);
+	printable = 1;
+	q = buf;
+	eq = buf + sizeof(buf);
+	q = seprint(q, eq, "(%d) '", n);
+
+	if(n > sizeof(data))
+		n = sizeof(data);
+	p = packetPeek(pkt, data, 0, n);
+	for(i=0; i<n && printable; i++)
+		if((p[i]<32 && p[i] !='\n' && p[i] !='\t') || p[i]>127)
+				printable = 0;
+	if(printable) {
+		for(i=0; i<n; i++)
+			q = seprint(q, eq, "%c", p[i]);
+	} else {
+		for(i=0; i<n; i++) {
+			if(i>0 && i%4==0)
+				q = seprint(q, eq, " ");
+			q = seprint(q, eq, "%.2X", p[i]);
+		}
+	}
+	seprint(q, eq, "'");
+	fprint(2, "%s", buf);
+}