/* * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */#include <u.h>#include <libc.h>#include <bio.h>#define DEF 22 /* lines in chunk: 3*DEF == 66, #lines per nroff page */Biobuf *cons;Biobuf bout;int pglen = DEF;void printfile(int);voidmain(int argc, char *argv[]){ int n; int f; if((cons = Bopen("/dev/cons", OREAD)) == 0) { fprint(2, "p: can't open /dev/cons\n"); exits("missing /dev/cons"); } Binit(&bout, 1, OWRITE); n = 0; while(argc > 1) { --argc; argv++; if(*argv[0] == '-'){ pglen = atoi(&argv[0][1]); if(pglen <= 0) pglen = DEF; } else { n++; f = open(argv[0], OREAD); if(f < 0){ fprint(2, "p: can't open %s - %r\n", argv[0]); continue; } printfile(f); close(f); } } if(n == 0) printfile(0); exits(0);}voidprintfile(int f){ int i, j, n; char *s, *cmd; Biobuf *b; b = malloc(sizeof(Biobuf)); Binit(b, f, OREAD); for(;;){ for(i=1; i <= pglen; i++) { s = Brdline(b, '\n'); if(s == 0){ n = Blinelen(b); if(n > 0) /* line too long for Brdline */ for(j=0; j<n; j++) Bputc(&bout, Bgetc(b)); else{ /* true EOF */ free(b); return; } }else{ Bwrite(&bout, s, Blinelen(b)-1); if(i < pglen) Bwrite(&bout, "\n", 1); } } Bflush(&bout); getcmd: cmd = Brdline(cons, '\n'); if(cmd == 0 || *cmd == 'q') exits(0); cmd[Blinelen(cons)-1] = 0; if(*cmd == '!'){ if(fork() == 0){ dup(Bfildes(cons), 0); execl("/bin/rc", "rc", "-c", cmd+1, nil); } waitpid(); goto getcmd; } }}
/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
#include <u.h>
#include <libc.h>
#include <bio.h>
#define DEF 22 /* lines in chunk: 3*DEF == 66, #lines per nroff page */
Biobuf *cons;
Biobuf bout;
int pglen = DEF;
void printfile(int);
void
main(int argc, char *argv[])
{
int n;
int f;
if((cons = Bopen("/dev/cons", OREAD)) == 0) {
fprint(2, "p: can't open /dev/cons\n");
exits("missing /dev/cons");
}
Binit(&bout, 1, OWRITE);
n = 0;
while(argc > 1) {
--argc; argv++;
if(*argv[0] == '-'){
pglen = atoi(&argv[0][1]);
if(pglen <= 0)
pglen = DEF;
} else {
n++;
f = open(argv[0], OREAD);
if(f < 0){
fprint(2, "p: can't open %s - %r\n", argv[0]);
continue;
}
printfile(f);
close(f);
}
}
if(n == 0)
printfile(0);
exits(0);
}
void
printfile(int f)
{
int i, j, n;
char *s, *cmd;
Biobuf *b;
b = malloc(sizeof(Biobuf));
Binit(b, f, OREAD);
for(;;){
for(i=1; i <= pglen; i++) {
s = Brdline(b, '\n');
if(s == 0){
n = Blinelen(b);
if(n > 0) /* line too long for Brdline */
for(j=0; j<n; j++)
Bputc(&bout, Bgetc(b));
else{ /* true EOF */
free(b);
return;
}
}else{
Bwrite(&bout, s, Blinelen(b)-1);
if(i < pglen)
Bwrite(&bout, "\n", 1);
}
}
Bflush(&bout);
getcmd:
cmd = Brdline(cons, '\n');
if(cmd == 0 || *cmd == 'q')
exits(0);
cmd[Blinelen(cons)-1] = 0;
if(*cmd == '!'){
if(fork() == 0){
dup(Bfildes(cons), 0);
execl("/bin/rc", "rc", "-c", cmd+1, nil);
}
waitpid();
goto getcmd;
}
}
}