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#include <u.h>
#include <libc.h>
#include <bio.h>
Biobuf *fin;
Biobuf fout;
#define MINSPAN 6 /* Min characters in string */
#define BUFSIZE 70
void stringit(char *);
#undef isprint
#define isprint risprint
int isprint(Rune);
void
main(int argc, char **argv)
{
int i;
Binit(&fout, 1, OWRITE);
if(argc < 2) {
stringit("/dev/stdin");
exits(0);
}
for(i = 1; i < argc; i++) {
if(argc > 2)
print("%s:\n", argv[i]);
stringit(argv[i]);
}
exits(0);
}
void
stringit(char *str)
{
long posn, start;
int cnt = 0;
long c;
Rune buf[BUFSIZE];
if ((fin = Bopen(str, OREAD)) == 0) {
perror("open");
return;
}
start = 0;
posn = Boffset(fin);
while((c = Bgetrune(fin)) >= 0) {
if(isprint(c)) {
if(start == 0)
start = posn;
buf[cnt++] = c;
if(cnt == BUFSIZE-1) {
buf[cnt] = 0;
Bprint(&fout, "%8ld: %S ...\n", start, buf);
start = 0;
cnt = 0;
}
} else {
if(cnt >= MINSPAN) {
buf[cnt] = 0;
Bprint(&fout, "%8ld: %S\n", start, buf);
}
start = 0;
cnt = 0;
}
posn = Boffset(fin);
}
if(cnt >= MINSPAN){
buf[cnt] = 0;
Bprint(&fout, "%8ld: %S\n", start, buf);
}
Bterm(fin);
}
int
isprint(Rune r)
{
if ((r >= ' ' && r <0x7f) || r > 0xA0)
return 1;
else
return 0;
}
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