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/* guestfish - the filesystem interactive shell
* Copyright (C) 2009 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <inttypes.h>
#include "fish.h"
int
do_more (const char *cmd, int argc, char *argv[])
{
char filename[] = "/tmp/guestfishXXXXXX";
char buf[256];
const char *pager;
char *content;
int r, fd;
if (argc != 1) {
fprintf (stderr, _("use '%s filename' to page a file\n"), cmd);
return -1;
}
/* Choose a pager. */
if (strcasecmp (cmd, "less") == 0)
pager = "less";
else {
pager = getenv ("PAGER");
if (pager == NULL)
pager = "more";
}
/* Download the file and write it to a temporary. */
fd = mkstemp (filename);
if (fd == -1) {
perror ("mkstemp");
return -1;
}
if ((content = guestfs_cat (g, argv[0])) == NULL) {
close (fd);
unlink (filename);
return -1;
}
if (xwrite (fd, content, strlen (content)) == -1) {
close (fd);
unlink (filename);
free (content);
return -1;
}
free (content);
if (close (fd) == -1) {
perror (filename);
unlink (filename);
return -1;
}
/* View it. */
/* XXX Safe? */
snprintf (buf, sizeof buf, "%s %s", pager, filename);
r = system (buf);
unlink (filename);
if (r != 0) {
perror (buf);
return -1;
}
return 0;
}
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