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|
/*
* print -- loadable ksh-93 style print builtin
*/
/*
Copyright (C) 1999-2009 Free Software Foundation, Inc.
This file is part of GNU Bash.
Bash 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 3 of the License, or
(at your option) any later version.
Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "bashtypes.h"
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include "bashansi.h"
#include "shell.h"
#include "builtins.h"
#include "stdc.h"
#include "bashgetopt.h"
#include "builtext.h"
#include "common.h"
#if !defined (errno)
extern int errno;
#endif
int print_builtin ();
static int printargs ();
static FILE *ofp;
extern char *this_command_name;
static char *print_doc[] = {
"Display arguments.",
"",
"Output the arguments. The -f option means to use the argument as a",
"format string as would be supplied to printf(1). The rest of the",
"options are as in ksh.",
(char *)NULL
};
struct builtin print_struct = {
"print",
print_builtin,
BUILTIN_ENABLED,
print_doc,
"print [-Rnprs] [-u unit] [-f format] [arguments]",
(char *)0
};
#ifndef ISOPTION
#define ISOPTION(s, c) (s[0] == '-' && s[2] == '\0' && s[1] == c)
#endif
int
print_builtin (list)
WORD_LIST *list;
{
int c, r, nflag, raw, ofd, sflag;
intmax_t lfd;
char **v, *pfmt, *arg;
WORD_LIST *l;
nflag = raw = sflag = 0;
ofd = 1;
pfmt = 0;
reset_internal_getopt ();
while ((c = internal_getopt (list, "Rnprsu:f:")) != -1)
{
switch (c)
{
case 'R':
raw = 2;
loptend = lcurrent;
if (loptend && ISOPTION (loptend->word->word, 'n'))
{
loptend = loptend->next;
nflag = 1;
}
goto opt_end;
case 'r':
raw = 1;
break;
case 'n':
nflag = 1;
break;
case 's':
sflag = 1;
break;
case 'p':
break; /* NOP */
case 'u':
if (all_digits (list_optarg) && legal_number (list_optarg, &lfd) && lfd == (int)lfd)
ofd = lfd;
else
{
for (l = list; l->next && l->next != lcurrent; l = l->next);
lcurrent = loptend = l;
goto opt_end;
}
break;
case 'f':
pfmt = list_optarg;
break;
CASE_HELPOPT;
default:
builtin_usage ();
return (EX_USAGE);
}
}
opt_end:
list = loptend;
ofp = (ofd == 1) ? stdout : fdopen (dup (ofd), "w");
if (pfmt)
{
WORD_DESC *w;
WORD_LIST *nlist;
w = make_word (pfmt);
nlist = make_word_list (w, list);
r = printf_builtin (nlist);
nlist->next = (WORD_LIST *)NULL;
dispose_words (nlist);
return (r);
}
if (raw)
{
for (l = list; l; l = l->next)
{
fprintf (ofp, "%s", l->word->word);
if (l->next)
fprintf (ofp, " ");
}
if (nflag == 0)
fprintf (ofp, "\n");
fflush (ofp);
return (0);
}
r = printargs (list, ofp);
if (r && nflag == 0)
fprintf (ofp, "\n");
if (ofd != 1)
fclose (ofp);
return 0;
}
static int
printargs (list, ofp)
WORD_LIST *list;
FILE *ofp;
{
WORD_LIST *l;
char *ostr;
int sawc;
for (sawc = 0, l = list; l; l = l->next)
{
ostr = ansicstr (l->word->word, strlen (l->word->word), 0, &sawc, (int *)0);
if (ostr)
fprintf (ofp, "%s", ostr);
free (ostr);
if (sawc)
return (0);
if (l->next)
fprintf (ofp, " ");
}
return (1);
}
|
