/* From /sys/src/libauthsrv/readnvram.c, LPL licensed */#include <u.h>#include <libc.h> char*readcons(char *prompt, char *def, int raw, char *buf, int nbuf){ int fdin, fdout, ctl, n, m; char line[10]; fdin = open("/dev/cons", OREAD); if(fdin < 0) fdin = 0; fdout = open("/dev/cons", OWRITE); if(fdout < 0) fdout = 1; if(def != nil) fprint(fdout, "%s[%s]: ", prompt, def); else fprint(fdout, "%s: ", prompt); if(raw){ ctl = open("/dev/consctl", OWRITE); if(ctl >= 0) write(ctl, "rawon", 5); } else ctl = -1; m = 0; for(;;){ n = read(fdin, line, 1); if(n == 0){ close(ctl); werrstr("readcons: EOF"); return nil; } if(n < 0){ close(ctl); werrstr("can't read cons"); return nil; } if(line[0] == 0x7f) exits(0); if(n == 0 || line[0] == '\n' || line[0] == '\r'){ if(raw){ write(ctl, "rawoff", 6); write(fdout, "\n", 1); close(ctl); } buf[m] = '\0'; if(buf[0]=='\0' && def) strcpy(buf, def); return buf; } if(line[0] == '\b'){ if(m > 0) m--; }else if(line[0] == 0x15){ /* ^U: line kill */ m = 0; if(def != nil) fprint(fdout, "%s[%s]: ", prompt, def); else fprint(fdout, "%s: ", prompt); }else{ if(m >= nbuf-1){ fprint(fdout, "line too long\n"); m = 0; if(def != nil) fprint(fdout, "%s[%s]: ", prompt, def); else fprint(fdout, "%s: ", prompt); }else buf[m++] = line[0]; } }}
/* From /sys/src/libauthsrv/readnvram.c, LPL licensed */
#include <u.h>
#include <libc.h>
char*
readcons(char *prompt, char *def, int raw, char *buf, int nbuf)
{
int fdin, fdout, ctl, n, m;
char line[10];
fdin = open("/dev/cons", OREAD);
if(fdin < 0)
fdin = 0;
fdout = open("/dev/cons", OWRITE);
if(fdout < 0)
fdout = 1;
if(def != nil)
fprint(fdout, "%s[%s]: ", prompt, def);
else
fprint(fdout, "%s: ", prompt);
if(raw){
ctl = open("/dev/consctl", OWRITE);
if(ctl >= 0)
write(ctl, "rawon", 5);
} else
ctl = -1;
m = 0;
for(;;){
n = read(fdin, line, 1);
if(n == 0){
close(ctl);
werrstr("readcons: EOF");
return nil;
}
if(n < 0){
close(ctl);
werrstr("can't read cons");
return nil;
}
if(line[0] == 0x7f)
exits(0);
if(n == 0 || line[0] == '\n' || line[0] == '\r'){
if(raw){
write(ctl, "rawoff", 6);
write(fdout, "\n", 1);
close(ctl);
}
buf[m] = '\0';
if(buf[0]=='\0' && def)
strcpy(buf, def);
return buf;
}
if(line[0] == '\b'){
if(m > 0)
m--;
}else if(line[0] == 0x15){ /* ^U: line kill */
m = 0;
if(def != nil)
fprint(fdout, "%s[%s]: ", prompt, def);
else
fprint(fdout, "%s: ", prompt);
}else{
if(m >= nbuf-1){
fprint(fdout, "line too long\n");
m = 0;
if(def != nil)
fprint(fdout, "%s[%s]: ", prompt, def);
else
fprint(fdout, "%s: ", prompt);
}else
buf[m++] = line[0];
}
}
}