X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/anag/blobdiff_plain/d9af4a2b674e5ab91df0f9af236283b617bb81c7..HEAD:/anag.h

diff --git a/anag.h b/anag.h
index eca5091..32b5ea5 100644
--- a/anag.h
+++ b/anag.h
@@ -1,13 +1,11 @@
 /* -*-c-*-
- *
- * $Id: anag.h,v 1.4 2003/11/29 23:38:37 mdw Exp $
  *
  * External definitions for Anag
  *
  * (c) 2001 Mark Wooding
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
  * This file is part of Anag: a simple wordgame helper.
  *
@@ -15,35 +13,17 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- * 
+ *
  * Anag 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 Anag; if not, write to the Free Software Foundation,
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: anag.h,v $
- * Revision 1.4  2003/11/29 23:38:37  mdw
- * Debianization.
- *
- * Revision 1.3  2003/09/15 02:48:55  mdw
- * Monoalphabetic match filter.
- *
- * Revision 1.2  2002/08/11 12:58:09  mdw
- * Added support for regular expression matching, if supported by the C
- * library.
- *
- * Revision 1.1  2001/02/04 17:14:42  mdw
- * Initial checkin
- *
- */
-
 #ifndef ANAG_H
 #define ANAG_H
 
@@ -64,6 +44,36 @@
 #include <stdlib.h>
 #include <string.h>
 
+/*----- Preliminaries -----------------------------------------------------*/
+
+#if defined(__GNUC__)
+#  define GCC_VERSION_P(maj, min)                                       \
+	(__GNUC__ > (maj) || (__GNUC__ == (maj) && __GNUC_MINOR__ >= (min)))
+#else
+#  define GCC_VERSION_P(maj, min) 0
+#endif
+
+#ifdef __clang__
+#  define CLANG_VERSION_P(maj, min)                                     \
+	(__clang_major__ > (maj) || (__clang_major__ == (maj) &&        \
+				     __clang_minor__ >= (min)))
+#else
+#  define CLANG_VERSION_P(maj, min) 0
+#endif
+
+#if GCC_VERSION_P(2, 5) || CLANG_VERSION_P(3, 3)
+#  define NORETURN __attribute__((noreturn))
+#  define PRINTF_LIKE(fix, aix) __attribute__((format(printf, fix, aix)))
+#endif
+
+#ifndef NORETURN
+#  define NORETURN
+#endif
+
+#ifndef PRINTF_LIKE
+#  define PRINTF_LIKE
+#endif
+
 /*----- Data structures ---------------------------------------------------*/
 
 typedef struct node {
@@ -85,8 +95,20 @@ extern node *subgram(const char *const */*av*/);
 extern node *wildcard(const char *const */*av*/);
 extern node *trackword(const char *const */*av*/);
 extern node *mono(const char *const */*av*/);
-extern node *regexp(const char *const */*av*/);
-extern node *pcrenode(const char *const */*av*/);
+#ifdef HAVE_REGCOMP
+  extern node *regexp(const char *const */*av*/);
+#endif
+#if defined(HAVE_PCRE) || defined(HAVE_PCRE2)
+  extern node *pcrenode(const char *const */*av*/);
+#endif
+extern node *longest(const char *const */*av*/);
+extern node *shortest(const char *const */*av*/);
+
+/*----- Exit codes --------------------------------------------------------*/
+
+#define EX_OK 0
+#define EX_NONE 1
+#define EX_FAIL 127
 
 /*----- Error reporting ---------------------------------------------------*/
 
@@ -126,7 +148,7 @@ extern int pquis(FILE */*fp*/, const char */*p*/);
  * Use:		Reports an error and exits.
  */
 
-extern void die(const char */*f*/, ...);
+extern PRINTF_LIKE(1, 2) NORETURN void die(const char */*f*/, ...);
 
 /*----- Memory allocation -------------------------------------------------*/
 
@@ -207,6 +229,22 @@ extern void dstr_ensure(dstr */*d*/, size_t /*sz*/);
 
 extern int dstr_putline(dstr */*d*/, FILE */*fp*/);
 
+/*----- Infrastructure ----------------------------------------------------*/
+
+/* --- @atend_register@ --- *
+ *
+ * Arguments:	@int (*func)(void *)@ = function to call
+ *		@void *p@ = handle to pass to it
+ *
+ * Returns:	---
+ *
+ * Use:		Adds a function to the list of things to do at the end of the
+ *		program.  The function should return nonzero if it produced
+ *		any output.
+ */
+
+extern void atend_register(int (*/*func*/)(void */*p*/), void */*p*/);
+
 /*----- That's all, folks -------------------------------------------------*/
 
 #ifdef __cplusplus