554 lines
11 KiB
C
554 lines
11 KiB
C
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include "bashansi.h"
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#include "shell.h"
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#include "builtins.h"
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#include "stdc.h"
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#include "bashgetopt.h"
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#if !defined (errno)
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extern int errno;
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#endif
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#define PF(f, func) { \
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if (fieldwidth) \
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if (precision) \
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(void)fprintf(ofp, f, fieldwidth, precision, func); \
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else \
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(void)fprintf(ofp, f, fieldwidth, func); \
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else if (precision) \
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(void)fprintf(ofp, f, precision, func); \
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else \
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(void)fprintf(ofp, f, func); \
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}
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static int asciicode __P((void));
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static void escape __P((char *));
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static int getchr __P((void));
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static double getdouble __P((void));
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static int getint __P((int *));
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static int getlong __P((long *));
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static char *getstr __P((void));
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static char *mklong __P((char *, int));
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static void usage __P((void));
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static char **gargv;
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int print_builtin ();
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static int printf_main ();
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static int printargs ();
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static FILE *ofp;
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extern char *ansicstr ();
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extern char *single_quote ();
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extern char **make_builtin_argv ();
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extern char *this_command_name;
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extern int optind;
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static char *print_doc[] = {
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"Output the arguments. The -f option means to use the argument as a",
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"format string as would be supplied to printf(1). The rest of the",
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"options are as in ksh.",
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(char *)NULL
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};
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struct builtin print_struct = {
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"print",
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print_builtin,
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BUILTIN_ENABLED,
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print_doc,
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"print [-Rnprs] [-u unit] [-f format] [arguments]",
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(char *)0
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};
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#ifndef ISOPTION
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#define ISOPTION(s, c) (s[0] == '-' && s[2] == '\0' && s[1] == c)
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#endif
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int
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print_builtin (list)
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WORD_LIST *list;
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{
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int c, r, nflag, raw, ofd, sflag;
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char **v, *pfmt, *arg;
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WORD_LIST *l;
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nflag = raw = sflag = 0;
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ofd = 1;
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pfmt = 0;
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reset_internal_getopt ();
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while ((c = internal_getopt (list, "Rnprsu:f:")) != -1)
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{
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switch (c)
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{
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case 'R':
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raw = 2;
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loptend = lcurrent;
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if (loptend && ISOPTION (loptend->word->word, 'n'))
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{
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loptend = loptend->next;
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nflag = 1;
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}
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goto opt_end;
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case 'r':
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raw = 1;
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break;
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case 'n':
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nflag = 1;
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break;
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case 's':
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sflag = 1;
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break;
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case 'p':
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break; /* NOP */
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case 'u':
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if (all_digits (list_optarg))
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ofd = atoi (list_optarg);
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else
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{
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for (l = list; l->next && l->next != lcurrent; l = l->next);
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lcurrent = loptend = l;
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goto opt_end;
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}
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break;
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case 'f':
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pfmt = list_optarg;
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break;
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default:
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builtin_usage ();
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return (EX_USAGE);
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}
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}
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opt_end:
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list = loptend;
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ofp = (ofd == 1) ? stdout : fdopen (dup (ofd), "w");
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if (pfmt)
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{
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v = word_list_to_argv (list, 0, 2, &c);
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v[0] = this_command_name;
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v[1] = pfmt;
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r = printf_main (c, v);
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free (v);
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return r;
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}
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if (raw)
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{
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for (l = list; l; l = l->next)
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{
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fprintf (ofp, "%s", l->word->word);
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if (l->next)
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fprintf (ofp, " ");
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}
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if (nflag == 0)
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fprintf (ofp, "\n");
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fflush (ofp);
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return (0);
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}
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r = printargs (list, ofp);
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if (r && nflag == 0)
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fprintf (ofp, "\n");
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if (ofd != 1)
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fclose (ofp);
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return 0;
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}
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static int printargs (list, ofp)
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WORD_LIST *list;
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FILE *ofp;
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{
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WORD_LIST *l;
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char *ostr;
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int sawc;
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for (sawc = 0, l = list; l; l = l->next)
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{
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ostr = ansicstr (l->word->word, strlen (l->word->word), &sawc);
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fprintf (ofp, "%s", ostr);
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free (ostr);
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if (sawc)
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return (0);
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if (l->next)
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fprintf (ofp, " ");
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}
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return (1);
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}
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static int
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printf_main(argc, argv)
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int argc;
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char *argv[];
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{
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static char *skip1, *skip2;
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int ch, end, fieldwidth, precision;
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char convch, nextch, *format, *fmt, *start;
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while ((ch = getopt(argc, argv, "")) != EOF)
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switch (ch) {
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case '?':
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default:
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usage();
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return (1);
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}
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argc -= optind;
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argv += optind;
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if (argc < 1) {
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usage();
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return (1);
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}
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/*
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* Basic algorithm is to scan the format string for conversion
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* specifications -- once one is found, find out if the field
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* width or precision is a '*'; if it is, gather up value. Note,
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* format strings are reused as necessary to use up the provided
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* arguments, arguments of zero/null string are provided to use
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* up the format string.
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*/
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skip1 = "#-+ 0";
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skip2 = "*0123456789";
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escape(fmt = format = *argv); /* backslash interpretation */
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gargv = ++argv;
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for (;;) {
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end = 0;
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/* find next format specification */
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next: for (start = fmt;; ++fmt) {
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if (!*fmt) {
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/* avoid infinite loop */
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if (end == 1) {
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warnx("missing format character",
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NULL, NULL);
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return (1);
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}
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end = 1;
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if (fmt > start)
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(void)printf("%s", start);
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if (!*gargv)
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return (0);
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fmt = format;
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goto next;
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}
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/* %% prints a % */
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if (*fmt == '%') {
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if (*++fmt != '%')
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break;
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*fmt++ = '\0';
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(void)printf("%s", start);
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goto next;
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}
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}
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/* skip to field width */
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for (; strchr(skip1, *fmt); ++fmt);
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if (*fmt == '*') {
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if (getint(&fieldwidth))
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return (1);
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} else
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fieldwidth = 0;
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/* skip to possible '.', get following precision */
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for (; strchr(skip2, *fmt); ++fmt);
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if (*fmt == '.')
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++fmt;
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if (*fmt == '*') {
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if (getint(&precision))
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return (1);
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} else
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precision = 0;
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/* skip to conversion char */
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for (; strchr(skip2, *fmt); ++fmt);
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if (!*fmt) {
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warnx("missing format character", NULL, NULL);
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return (1);
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}
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convch = *fmt;
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nextch = *++fmt;
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*fmt = '\0';
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switch(convch) {
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case 'c': {
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char p;
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p = getchr();
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PF(start, p);
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break;
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}
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case 's': {
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char *p;
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p = getstr();
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PF(start, p);
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break;
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}
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case 'b': { /* expand escapes in argument */
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char *p;
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p = getstr();
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escape(p);
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PF(start, p);
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break;
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}
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case 'q': { /* print with shell single quoting */
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char *p, *p2;
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p = getstr();
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p2 = single_quote(p);
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PF(start, p2);
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free(p2);
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break;
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}
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case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
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long p;
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char *f;
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if ((f = mklong(start, convch)) == NULL)
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return (1);
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if (getlong(&p))
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return (1);
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PF(f, p);
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break;
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}
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case 'e': case 'E': case 'f': case 'g': case 'G': {
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double p;
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p = getdouble();
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PF(start, p);
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break;
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}
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default:
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warnx("illegal format character", NULL, NULL);
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return (1);
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}
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*fmt = nextch;
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}
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/* NOTREACHED */
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}
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static char *
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mklong(str, ch)
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char *str;
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int ch;
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{
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static char copy[64];
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int len;
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len = strlen(str) + 2;
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memmove(copy, str, len - 3);
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copy[len - 3] = 'l';
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copy[len - 2] = ch;
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copy[len - 1] = '\0';
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return (copy);
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}
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static void
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escape(fmt)
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register char *fmt;
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{
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register char *store;
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register int value, c;
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for (store = fmt; c = *fmt; ++fmt, ++store) {
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if (c != '\\') {
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*store = c;
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continue;
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}
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switch (*++fmt) {
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case '\0': /* EOS, user error */
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*store = '\\';
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*++store = '\0';
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return;
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case '\\': /* backslash */
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case '\'': /* single quote */
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*store = *fmt;
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break;
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|
|
case 'a': /* bell/alert */
|
||
|
|
*store = '\7';
|
||
|
|
break;
|
||
|
|
case 'b': /* backspace */
|
||
|
|
*store = '\b';
|
||
|
|
break;
|
||
|
|
case 'c':
|
||
|
|
return;
|
||
|
|
case 'e':
|
||
|
|
case 'E':
|
||
|
|
*store = '\033';
|
||
|
|
break;
|
||
|
|
case 'f': /* form-feed */
|
||
|
|
*store = '\f';
|
||
|
|
break;
|
||
|
|
case 'n': /* newline */
|
||
|
|
*store = '\n';
|
||
|
|
break;
|
||
|
|
case 'r': /* carriage-return */
|
||
|
|
*store = '\r';
|
||
|
|
break;
|
||
|
|
case 't': /* horizontal tab */
|
||
|
|
*store = '\t';
|
||
|
|
break;
|
||
|
|
case 'v': /* vertical tab */
|
||
|
|
*store = '\13';
|
||
|
|
break;
|
||
|
|
/* octal constant */
|
||
|
|
case '0': case '1': case '2': case '3':
|
||
|
|
case '4': case '5': case '6': case '7':
|
||
|
|
for (c = 3, value = 0;
|
||
|
|
c-- && *fmt >= '0' && *fmt <= '7'; ++fmt) {
|
||
|
|
value <<= 3;
|
||
|
|
value += *fmt - '0';
|
||
|
|
}
|
||
|
|
--fmt;
|
||
|
|
*store = value;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
*store = *fmt;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
*store = '\0';
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
getchr()
|
||
|
|
{
|
||
|
|
if (!*gargv)
|
||
|
|
return ('\0');
|
||
|
|
return ((int)**gargv++);
|
||
|
|
}
|
||
|
|
|
||
|
|
static char *
|
||
|
|
getstr()
|
||
|
|
{
|
||
|
|
if (!*gargv)
|
||
|
|
return ("");
|
||
|
|
return (*gargv++);
|
||
|
|
}
|
||
|
|
|
||
|
|
static char *Number = "+-.0123456789";
|
||
|
|
static int
|
||
|
|
getint(ip)
|
||
|
|
int *ip;
|
||
|
|
{
|
||
|
|
long val;
|
||
|
|
|
||
|
|
if (getlong(&val))
|
||
|
|
return (1);
|
||
|
|
if (val > INT_MAX) {
|
||
|
|
warnx("%s: %s", *gargv, strerror(ERANGE));
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
*ip = val;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
getlong(lp)
|
||
|
|
long *lp;
|
||
|
|
{
|
||
|
|
long val;
|
||
|
|
char *ep;
|
||
|
|
|
||
|
|
if (!*gargv) {
|
||
|
|
*lp = 0;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
if (strchr(Number, **gargv)) {
|
||
|
|
errno = 0;
|
||
|
|
val = strtol(*gargv, &ep, 0);
|
||
|
|
if (*ep != '\0') {
|
||
|
|
warnx("%s: illegal number", *gargv, NULL);
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
if (errno == ERANGE)
|
||
|
|
if (val == LONG_MAX) {
|
||
|
|
warnx("%s: %s", *gargv, strerror(ERANGE));
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
if (val == LONG_MIN) {
|
||
|
|
warnx("%s: %s", *gargv, strerror(ERANGE));
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
|
||
|
|
*lp = val;
|
||
|
|
++gargv;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
*lp = (long)asciicode();
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static double
|
||
|
|
getdouble()
|
||
|
|
{
|
||
|
|
if (!*gargv)
|
||
|
|
return ((double)0);
|
||
|
|
if (strchr(Number, **gargv))
|
||
|
|
return (atof(*gargv++));
|
||
|
|
return ((double)asciicode());
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
asciicode()
|
||
|
|
{
|
||
|
|
register int ch;
|
||
|
|
|
||
|
|
ch = **gargv;
|
||
|
|
if (ch == '\'' || ch == '"')
|
||
|
|
ch = (*gargv)[1];
|
||
|
|
++gargv;
|
||
|
|
return (ch);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
usage()
|
||
|
|
{
|
||
|
|
(void)fprintf(stderr, "usage: print [-Rnprs] [-u unit] [-f format] [arg ...]\n");
|
||
|
|
}
|