From 1d43aeb52e40b1a0de4afafca8922e24e0e44ed0 Mon Sep 17 00:00:00 2001
From: kevind <kevind>
Date: Tue, 10 Oct 2000 16:45:07 +0000
Subject: [PATCH] * lib/yesno.c, lib/rpmatch.c: new files.

---
 lib/rpmatch.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/yesno.c   | 52 +++++++++++++++++++++++++++++++++++
 2 files changed, 139 insertions(+)
 create mode 100644 lib/rpmatch.c
 create mode 100644 lib/yesno.c

diff --git a/lib/rpmatch.c b/lib/rpmatch.c
new file mode 100644
index 0000000..0988f07
--- /dev/null
+++ b/lib/rpmatch.c
@@ -0,0 +1,87 @@
+/* Determine whether string value is affirmation or negative response
+   according to current locale's data.
+   Copyright (C) 1996, 1998, 2000 Free Software Foundation, 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if STDC_HEADERS || _LIBC
+# include <stddef.h>
+# include <stdlib.h>
+#else
+# ifndef NULL
+#  define NULL 0
+# endif
+#endif
+
+#if ENABLE_NLS
+# include <sys/types.h>
+# if HAVE_LIMITS_H
+#  include <limits.h>
+# endif
+# include <regex.h>
+# include <libintl.h>
+# define _(Text) gettext (Text)
+
+static int
+try (const char *response, const char *pattern, const int match,
+     const int nomatch, const char **lastp, regex_t *re)
+{
+  if (pattern != *lastp)
+    {
+      /* The pattern has changed.  */
+      if (*lastp)
+	{
+	  /* Free the old compiled pattern.  */
+	  regfree (re);
+	  *lastp = NULL;
+	}
+      /* Compile the pattern and cache it for future runs.  */
+      if (regcomp (re, pattern, REG_EXTENDED) != 0)
+	return -1;
+      *lastp = pattern;
+    }
+
+  /* See if the regular expression matches RESPONSE.  */
+  return regexec (re, response, 0, NULL, 0) == 0 ? match : nomatch;
+}
+#endif
+
+
+int
+rpmatch (const char *response)
+{
+#if ENABLE_NLS
+  /* Match against one of the response patterns, compiling the pattern
+     first if necessary.  */
+
+  /* We cache the response patterns and compiled regexps here.  */
+  static const char *yesexpr, *noexpr;
+  static regex_t yesre, nore;
+  int result;
+
+  return ((result = try (response, _("^[yY]"), 1, 0,
+			 &yesexpr, &yesre))
+	  ? result
+	  : try (response, _("^[nN]"), 0, -1, &noexpr, &nore));
+#else
+  /* Test against "^[yY]" and "^[nN]", hardcoded to avoid requiring regex */
+  return (*response == 'y' || *response == 'Y' ? 1
+	  : *response == 'n' || *response == 'N' ? 0 : -1);
+#endif
+}
diff --git a/lib/yesno.c b/lib/yesno.c
new file mode 100644
index 0000000..8aaaf3d
--- /dev/null
+++ b/lib/yesno.c
@@ -0,0 +1,52 @@
+/* yesno.c -- read a yes/no response from stdin
+   Copyright (C) 1990, 1998 Free Software Foundation, 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <ctype.h>
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#include <stdio.h>
+
+/* Read one line from standard input
+   and return nonzero if that line begins with y or Y,
+   otherwise return 0. */
+
+int rpmatch ();
+
+int
+yesno ()
+{
+  /* We make some assumptions here:
+     a) leading white space in the response are not vital
+     b) the first 128 characters of the answer are enough (the rest can
+	be ignored)
+     I cannot think for a situation where this is not ok.  --drepper@gnu  */
+  char buf[128];
+  int len = 0;
+  int c;
+
+  while ((c = getchar ()) != EOF && c != '\n')
+    if ((len > 0 && len < 127) || (len == 0 && !isspace (c)))
+      buf[len++] = c;
+  buf[len] = '\0';
+
+  return rpmatch (buf) == 1;
+}
-- 
2.11.4.GIT