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#include <u.h>
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#include <libc.h>
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#include <ip.h>
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#include <ctype.h>
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#include "dat.h"
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#include "protos.h"
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static void
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p_compile(Filter *)
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{
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}
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static char tohex[16] = {
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	'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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	'a', 'b', 'c', 'd', 'e', 'f'
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};
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static int
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p_seprint(Msg *m)
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{
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	int c, i, n, isstring;
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	uchar *ps = m->ps;
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	char *p = m->p;
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	char *e = m->e;
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	n = m->pe - ps;
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	if(n > Nflag)
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		n = Nflag;
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	isstring = 1;
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	for(i = 0; i < n; i++){
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		c = ps[i];
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		if(!isprint(c) && !isspace(c)){
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			isstring = 0;
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			break;
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		}
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	}
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	if(isstring){
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		for(i = 0; i < n && p+1<e; i++){
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			c = ps[i];
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			switch(c){
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			case '\t':
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				*p++ = '\\';
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				*p++ = 't';
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				break;
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			case '\r':
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				*p++ = '\\';
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				*p++ = 'r';
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				break;
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			case '\n':
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				*p++ = '\\';
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				*p++ = 'n';
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				break;
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			default:
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				*p++ = c;
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			}
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		}
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	} else {
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		for(i = 0; i < n && p+1<e; i++){
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			c = ps[i];
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			*p++ = tohex[c>>4];
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			*p++ = tohex[c&0xf];
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		}
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	}
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	m->pr = nil;
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	m->p = p;
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	m->ps = ps;
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	return 0;
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}
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Proto dump =
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{
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	"dump",
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	p_compile,
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	nil,
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	p_seprint,
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	nil,
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	nil,
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	nil,
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	defaultframer,
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};