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db_include/snowball/header.h

@@ -0,0 +1,67 @@
+/*-------------------------------------------------------------------------
+ *
+ * header.h
+ *		Replacement header file for Snowball stemmer modules
+ *
+ * The Snowball stemmer modules do #include "header.h", and think they
+ * are including snowball/libstemmer/header.h.  We adjust the CPPFLAGS
+ * so that this file is found instead, and thereby we can modify the
+ * headers they see.  The main point here is to ensure that pg_config.h
+ * is included before any system headers such as <stdio.h>; without that,
+ * we have portability issues on some platforms due to variation in
+ * largefile options across different modules in the backend.
+ *
+ * NOTE: this file should not be included into any non-snowball sources!
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ *
+ * src/include/snowball/header.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef SNOWBALL_HEADR_H
+#define SNOWBALL_HEADR_H
+
+/*
+ * It's against Postgres coding conventions to include postgres.h in a
+ * header file, but we allow the violation here because the alternative is
+ * to modify the machine-generated .c files provided by the Snowball project.
+ */
+#include "postgres.h"
+
+/* Some platforms define MAXINT and/or MININT, causing conflicts */
+#ifdef MAXINT
+#undef MAXINT
+#endif
+#ifdef MININT
+#undef MININT
+#endif
+
+/* Now we can include the original Snowball header.h */
+#include "snowball/libstemmer/header.h" /* pgrminclude ignore */
+
+/*
+ * Redefine standard memory allocation interface to pgsql's one.
+ * This allows us to control where the Snowball code allocates stuff.
+ */
+#ifdef malloc
+#undef malloc
+#endif
+#define malloc(a)		palloc(a)
+
+#ifdef calloc
+#undef calloc
+#endif
+#define calloc(a,b)		palloc0((a) * (b))
+
+#ifdef realloc
+#undef realloc
+#endif
+#define realloc(a,b)	repalloc(a,b)
+
+#ifdef free
+#undef free
+#endif
+#define free(a)			pfree(a)
+
+#endif							/* SNOWBALL_HEADR_H */