Virgin import of diffutils 2.8.7.

contrib/diff/lib/xstrtol.h

@@ -0,0 +1,91 @@
+/* A more useful interface to strtol.
+
+   Copyright (C) 1995, 1996, 1998, 1999, 2001, 2002, 2003, 2004 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.  */
+
+#ifndef XSTRTOL_H_
+# define XSTRTOL_H_ 1
+
+# include "exitfail.h"
+
+/* Get uintmax_t.  */
+# if HAVE_INTTYPES_H
+#  include <inttypes.h>
+# else
+#  if HAVE_STDINT_H
+#   include <stdint.h>
+#  endif
+# endif
+
+# ifndef _STRTOL_ERROR
+enum strtol_error
+  {
+    LONGINT_OK = 0,
+
+    /* These two values can be ORed together, to indicate that both
+       errors occurred.  */
+    LONGINT_OVERFLOW = 1,
+    LONGINT_INVALID_SUFFIX_CHAR = 2,
+
+    LONGINT_INVALID_SUFFIX_CHAR_WITH_OVERFLOW = (LONGINT_INVALID_SUFFIX_CHAR
+						 | LONGINT_OVERFLOW),
+    LONGINT_INVALID = 4
+  };
+typedef enum strtol_error strtol_error;
+# endif
+
+# define _DECLARE_XSTRTOL(name, type) \
+  strtol_error name (const char *, char **, int, type *, const char *);
+_DECLARE_XSTRTOL (xstrtol, long int)
+_DECLARE_XSTRTOL (xstrtoul, unsigned long int)
+_DECLARE_XSTRTOL (xstrtoimax, intmax_t)
+_DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
+
+# define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err)	\
+  do									\
+    {									\
+      switch ((Err))							\
+	{								\
+	default:							\
+	  abort ();							\
+									\
+	case LONGINT_INVALID:						\
+	  error ((Exit_code), 0, "invalid %s `%s'",			\
+		 (Argument_type_string), (Str));			\
+	  break;							\
+									\
+	case LONGINT_INVALID_SUFFIX_CHAR:				\
+	case LONGINT_INVALID_SUFFIX_CHAR | LONGINT_OVERFLOW:		\
+	  error ((Exit_code), 0, "invalid character following %s in `%s'", \
+		 (Argument_type_string), (Str));			\
+	  break;							\
+									\
+	case LONGINT_OVERFLOW:						\
+	  error ((Exit_code), 0, "%s `%s' too large",			\
+		 (Argument_type_string), (Str));			\
+	  break;							\
+	}								\
+    }									\
+  while (0)
+
+# define STRTOL_FATAL_ERROR(Str, Argument_type_string, Err)		\
+  _STRTOL_ERROR (exit_failure, Str, Argument_type_string, Err)
+
+# define STRTOL_FAIL_WARN(Str, Argument_type_string, Err)		\
+  _STRTOL_ERROR (0, Str, Argument_type_string, Err)
+
+#endif /* not XSTRTOL_H_ */