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-rw-r--r--examples/loadables/print.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/examples/loadables/print.c b/examples/loadables/print.c
new file mode 100644
index 0000000..d6c5903
--- /dev/null
+++ b/examples/loadables/print.c
@@ -0,0 +1,193 @@
+/*
+ * 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);
+}