minix/commands/yap/process.c

128 lines
2 KiB
C
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2005-04-21 16:53:53 +02:00
/* Copyright (c) 1985 Ceriel J.H. Jacobs */
# ifndef lint
static char rcsid[] = "$Header$";
# endif
# define _PROCESS_
# include "in_all.h"
# if USG_OPEN
# include <fcntl.h>
# endif
# if BSD4_2_OPEN
# include <sys/file.h>
# endif
# if POSIX_OPEN
# include <sys/types.h>
# include <fcntl.h>
# endif
# include <sys/types.h>
# include <sys/stat.h>
# include "process.h"
# include "commands.h"
# include "display.h"
# include "prompt.h"
# include "getline.h"
# include "main.h"
# include "options.h"
# include "output.h"
static int nfiles; /* Number of filenames on command line */
/*
* Visit a file, file name is "fn".
*/
VOID
visitfile(fn) char *fn; {
struct stat statbuf;
if (stdf > 0) {
/*
* Close old input file
*/
(VOID) close(stdf);
}
currentfile = fn;
# if USG_OPEN || BSD4_2_OPEN || POSIX_OPEN
if ((stdf = open(fn,O_RDONLY,0)) < 0) {
# else
if ((stdf = open(fn,0)) < 0) {
# endif
error(": could not open");
maxpos = 0;
}
else { /* Get size for percentage in prompt */
(VOID) fstat(stdf, &statbuf);
maxpos = statbuf.st_size;
}
do_clean();
d_clean();
}
/*
* process the input files, one by one.
* If there is none, input is from a pipe.
*/
VOID
processfiles(n,argv) char ** argv; {
static char *dummies[3];
long arg;
if (!(nfiles = n)) {
/*
* Input from pipe
*/
currentfile = "standard-input";
/*
* Take care that *(filenames - 1) and *(filenames + 1) are 0
*/
filenames = &dummies[1];
d_clean();
do_clean();
}
else {
filenames = argv;
(VOID) nextfile(0);
}
*--argv = 0;
if (startcomm) {
n = getcomm(&arg);
if (commands[n].c_flags & NEEDS_SCREEN) {
redraw(0);
}
do_comm(n,arg);
startcomm = 0;
}
redraw(1);
if (setjmp(SetJmpBuf)) {
nflush();
redraw(1);
}
DoneSetJmp = 1;
for (;;) {
interrupt = 0;
n = getcomm(&arg);
do_comm(n, arg);
}
}
/*
* Get the next file the user asks for.
*/
int
nextfile(n) {
register i;
if ((i = filecount + n) >= nfiles || i < 0) {
return 1;
}
filecount = i;
visitfile(filenames[i]);
return 0;
}