Reduce the amount of code by moving the three copies of the ohash

callback functions into one common place, preparing for the use of
ohash for some additional purposes.  No functional change.

7 files changed, 109 insertions, 131 deletions

diff --git a/Makefile b/Makefile
index 8bd5c4cc..a3b275e4 100644
--- a/Makefile
+++ b/Makefile
@@ -76,6 +76,7 @@ SRCS		 = att.c \
 		   man_validate.c \
 		   mandoc.c \
 		   mandoc_aux.c \
+		   mandoc_ohash.c \
 		   mandocdb.c \
 		   manpage.c \
 		   manpath.c \
@@ -151,6 +152,7 @@ DISTFILES	 = INSTALL \
 		   mandoc_headers.3 \
 		   mandoc_html.3 \
 		   mandoc_malloc.3 \
+		   mandoc_ohash.h \
 		   mansearch.3 \
 		   mansearch.h \
 		   mchars_alloc.3 \
@@ -198,6 +200,7 @@ LIBMANDOC_OBJS	 = $(LIBMAN_OBJS) \
 		   chars.o \
 		   mandoc.o \
 		   mandoc_aux.o \
+		   mandoc_ohash.o \
 		   msec.o \
 		   preconv.o \
 		   read.o
diff --git a/Makefile.depend b/Makefile.depend
index 914d3908..abac604e 100644
--- a/Makefile.depend
+++ b/Makefile.depend
@@ -32,10 +32,11 @@ man_term.o: man_term.c config.h mandoc_aux.h mandoc.h roff.h man.h out.h term.h
 man_validate.o: man_validate.c config.h mandoc_aux.h mandoc.h roff.h man.h libmandoc.h roff_int.h libman.h
 mandoc.o: mandoc.c config.h mandoc.h mandoc_aux.h libmandoc.h
 mandoc_aux.o: mandoc_aux.c config.h mandoc.h mandoc_aux.h
-mandocdb.o: mandocdb.c config.h compat_fts.h compat_ohash.h mandoc_aux.h mandoc.h roff.h mdoc.h man.h manconf.h mansearch.h
+mandoc_ohash.o: mandoc_ohash.c mandoc_aux.h mandoc_ohash.h compat_ohash.h
+mandocdb.o: mandocdb.c config.h compat_fts.h mandoc_aux.h mandoc_ohash.h compat_ohash.h mandoc.h roff.h mdoc.h man.h manconf.h mansearch.h
 manpage.o: manpage.c config.h manconf.h mansearch.h
 manpath.o: manpath.c config.h mandoc_aux.h manconf.h
-mansearch.o: mansearch.c config.h compat_ohash.h mandoc.h mandoc_aux.h manconf.h mansearch.h
+mansearch.o: mansearch.c config.h mandoc.h mandoc_aux.h mandoc_ohash.h compat_ohash.h manconf.h mansearch.h
 mansearch_const.o: mansearch_const.c config.h mansearch.h
 mdoc.o: mdoc.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h libmandoc.h roff_int.h libmdoc.h
 mdoc_argv.o: mdoc_argv.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h libmandoc.h libmdoc.h
@@ -52,7 +53,7 @@ read.o: read.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h man.h libmandoc.h ro
 roff.o: roff.c config.h mandoc.h mandoc_aux.h roff.h libmandoc.h roff_int.h libroff.h predefs.in
 soelim.o: soelim.c config.h compat_stringlist.h
 st.o: st.c config.h roff.h mdoc.h libmdoc.h st.in
-tag.o: tag.c config.h compat_ohash.h mandoc_aux.h tag.h
+tag.o: tag.c config.h mandoc_aux.h mandoc_ohash.h compat_ohash.h tag.h
 tbl.o: tbl.c config.h mandoc.h mandoc_aux.h libmandoc.h libroff.h
 tbl_data.o: tbl_data.c config.h mandoc.h mandoc_aux.h libmandoc.h libroff.h
 tbl_html.o: tbl_html.c config.h mandoc.h out.h html.h
diff --git a/mandoc_ohash.c b/mandoc_ohash.c
new file mode 100644
index 00000000..7fd4b712
--- /dev/null
+++ b/mandoc_ohash.c
@@ -0,0 +1,62 @@
+/*	$Id$	*/
+/*
+ * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <sys/types.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "mandoc_aux.h"
+#include "mandoc_ohash.h"
+
+static	void	 *hash_alloc(size_t, void *);
+static	void	 *hash_calloc(size_t, size_t, void *);
+static	void	  hash_free(void *, void *);
+
+
+void
+mandoc_ohash_init(struct ohash *h, unsigned int sz, ptrdiff_t ko)
+{
+	struct ohash_info info;
+
+	info.alloc = hash_alloc;
+	info.calloc = hash_calloc;
+	info.free = hash_free;
+	info.data = NULL;
+	info.key_offset = ko;
+
+	ohash_init(h, sz, &info);
+}
+
+static void *
+hash_alloc(size_t sz, void *arg)
+{
+
+	return mandoc_malloc(sz);
+}
+
+static void *
+hash_calloc(size_t n, size_t sz, void *arg)
+{
+
+	return mandoc_calloc(n, sz);
+}
+
+static void
+hash_free(void *p, void *arg)
+{
+
+	free(p);
+}
diff --git a/mandoc_ohash.h b/mandoc_ohash.h
new file mode 100644
index 00000000..c0a4460d
--- /dev/null
+++ b/mandoc_ohash.h
@@ -0,0 +1,27 @@
+/*	$Id$	*/
+/*
+ * Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#if HAVE_OHASH
+#include <ohash.h>
+#else
+#include "compat_ohash.h"
+#endif
+
+__BEGIN_DECLS
+
+void		  mandoc_ohash_init(struct ohash *, unsigned int, ptrdiff_t);
+
+__END_DECLS
diff --git a/mandocdb.c b/mandocdb.c
index 351ee9af..de5417d6 100644
--- a/mandocdb.c
+++ b/mandocdb.c
@@ -40,14 +40,10 @@
 #include <string.h>
 #include <unistd.h>
 
-#if HAVE_OHASH
-#include <ohash.h>
-#else
-#include "compat_ohash.h"
-#endif
 #include <sqlite3.h>
 
 #include "mandoc_aux.h"
+#include "mandoc_ohash.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
@@ -146,9 +142,6 @@ static	void	 dbadd_mlink_name(const struct mlink *mlink);
 static	int	 dbopen(int);
 static	void	 dbprune(void);
 static	void	 filescan(const char *);
-static	void	*hash_alloc(size_t, void *);
-static	void	 hash_free(void *, void *);
-static	void	*hash_calloc(size_t, size_t, void *);
 static	void	 mlink_add(struct mlink *, const struct stat *);
 static	void	 mlink_check(struct mpage *, struct mlink *);
 static	void	 mlink_free(struct mlink *);
@@ -342,7 +335,6 @@ int
 mandocdb(int argc, char *argv[])
 {
 	struct manconf	  conf;
-	struct ohash_info mpages_info, mlinks_info;
 	struct mparse	 *mp;
 	const char	 *path_arg;
 	size_t		  j, sz;
@@ -351,14 +343,6 @@ mandocdb(int argc, char *argv[])
 	memset(&conf, 0, sizeof(conf));
 	memset(stmts, 0, STMT__MAX * sizeof(sqlite3_stmt *));
 
-	mpages_info.alloc  = mlinks_info.alloc  = hash_alloc;
-	mpages_info.calloc = mlinks_info.calloc = hash_calloc;
-	mpages_info.free   = mlinks_info.free   = hash_free;
-	mpages_info.data   = mlinks_info.data   = NULL;
-
-	mpages_info.key_offset = offsetof(struct mpage, inodev);
-	mlinks_info.key_offset = offsetof(struct mlink, file);
-
 	/*
 	 * We accept a few different invocations.
 	 * The CHECKOP macro makes sure that invocation styles don't
@@ -438,8 +422,8 @@ mandocdb(int argc, char *argv[])
 	mchars = mchars_alloc();
 	mp = mparse_alloc(mparse_options, MANDOCLEVEL_BADARG, NULL,
 	    mchars, NULL);
-	ohash_init(&mpages, 6, &mpages_info);
-	ohash_init(&mlinks, 6, &mlinks_info);
+	mandoc_ohash_init(&mpages, 6, offsetof(struct mpage, inodev));
+	mandoc_ohash_init(&mlinks, 6, offsetof(struct mlink, file));
 
 	if (OP_UPDATE == op || OP_DELETE == op || OP_TEST == op) {
 
@@ -509,8 +493,10 @@ mandocdb(int argc, char *argv[])
 				continue;
 
 			if (j) {
-				ohash_init(&mpages, 6, &mpages_info);
-				ohash_init(&mlinks, 6, &mlinks_info);
+				mandoc_ohash_init(&mpages, 6,
+				    offsetof(struct mpage, inodev));
+				mandoc_ohash_init(&mlinks, 6,
+				    offsetof(struct mlink, file));
 			}
 
 			if ( ! set_basedir(conf.manpath.paths[j], argc > 0))
@@ -1099,7 +1085,6 @@ static void
 mpages_merge(struct mparse *mp)
 {
 	char			 any[] = "any";
-	struct ohash_info	 str_info;
 	struct mpage		*mpage, *mpage_dest;
 	struct mlink		*mlink, *mlink_dest;
 	struct roff_man		*man;
@@ -1108,12 +1093,6 @@ mpages_merge(struct mparse *mp)
 	int			 fd;
 	unsigned int		 pslot;
 
-	str_info.alloc = hash_alloc;
-	str_info.calloc = hash_calloc;
-	str_info.free = hash_free;
-	str_info.data = NULL;
-	str_info.key_offset = offsetof(struct str, key);
-
 	if ( ! nodb)
 		SQL_EXEC("BEGIN TRANSACTION");
 
@@ -1126,8 +1105,8 @@ mpages_merge(struct mparse *mp)
 		}
 
 		name_mask = NAME_MASK;
-		ohash_init(&names, 4, &str_info);
-		ohash_init(&strings, 6, &str_info);
+		mandoc_ohash_init(&names, 4, offsetof(struct str, key));
+		mandoc_ohash_init(&strings, 6, offsetof(struct str, key));
 		mparse_reset(mp);
 		man = NULL;
 		sodest = NULL;
@@ -2384,27 +2363,6 @@ prepare_statements:
 	return 1;
 }
 
-static void *
-hash_calloc(size_t n, size_t sz, void *arg)
-{
-
-	return mandoc_calloc(n, sz);
-}
-
-static void *
-hash_alloc(size_t sz, void *arg)
-{
-
-	return mandoc_malloc(sz);
-}
-
-static void
-hash_free(void *p, void *arg)
-{
-
-	free(p);
-}
-
 static int
 set_basedir(const char *targetdir, int report_baddir)
 {
diff --git a/mansearch.c b/mansearch.c
index 1f56de95..e825c13b 100644
--- a/mansearch.c
+++ b/mansearch.c
@@ -35,11 +35,6 @@
 #include <string.h>
 #include <unistd.h>
 
-#if HAVE_OHASH
-#include <ohash.h>
-#else
-#include "compat_ohash.h"
-#endif
 #include <sqlite3.h>
 #ifndef SQLITE_DETERMINISTIC
 #define SQLITE_DETERMINISTIC 0
@@ -47,6 +42,7 @@
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
+#include "mandoc_ohash.h"
 #include "manconf.h"
 #include "mansearch.h"
 
@@ -93,9 +89,6 @@ static	void		 buildnames(const struct mansearch *,
 				const char *, int form);
 static	char		*buildoutput(sqlite3 *, sqlite3_stmt *,
 				 uint64_t, uint64_t);
-static	void		*hash_alloc(size_t, void *);
-static	void		 hash_free(void *, void *);
-static	void		*hash_calloc(size_t, size_t, void *);
 static	struct expr	*exprcomp(const struct mansearch *,
 				int, char *[]);
 static	void		 exprfree(struct expr *);
@@ -173,7 +166,6 @@ mansearch(const struct mansearch *search,
 	sqlite3		*db;
 	sqlite3_stmt	*s, *s2;
 	struct match	*mp;
-	struct ohash_info info;
 	struct ohash	 htab;
 	unsigned int	 idx;
 	size_t		 i, j, cur, maxres;
@@ -184,11 +176,6 @@ mansearch(const struct mansearch *search,
 		return 0;
 	}
 
-	info.calloc = hash_calloc;
-	info.alloc = hash_alloc;
-	info.free = hash_free;
-	info.key_offset = offsetof(struct match, pageid);
-
 	cur = maxres = 0;
 	*res = NULL;
 
@@ -284,8 +271,7 @@ mansearch(const struct mansearch *search,
 				SQL_BIND_INT64(db, s, j, ep->bits);
 		}
 
-		memset(&htab, 0, sizeof(struct ohash));
-		ohash_init(&htab, 4, &info);
+		mandoc_ohash_init(&htab, 4, offsetof(struct match, pageid));
 
 		/*
 		 * Hash each entry on its [unique] document identifier.
@@ -853,24 +839,3 @@ exprfree(struct expr *p)
 		p = pp;
 	}
 }
-
-static void *
-hash_calloc(size_t nmemb, size_t sz, void *arg)
-{
-
-	return mandoc_calloc(nmemb, sz);
-}
-
-static void *
-hash_alloc(size_t sz, void *arg)
-{
-
-	return mandoc_malloc(sz);
-}
-
-static void
-hash_free(void *p, void *arg)
-{
-
-	free(p);
-}
diff --git a/tag.c b/tag.c
index 21f4d238..eafb1123 100644
--- a/tag.c
+++ b/tag.c
@@ -26,13 +26,8 @@
 #include <string.h>
 #include <unistd.h>
 
-#if HAVE_OHASH
-#include <ohash.h>
-#else
-#include "compat_ohash.h"
-#endif
-
 #include "mandoc_aux.h"
+#include "mandoc_ohash.h"
 #include "tag.h"
 
 struct tag_entry {
@@ -42,9 +37,6 @@ struct tag_entry {
 };
 
 static	void	 tag_signal(int);
-static	void	*tag_alloc(size_t, void *);
-static	void	 tag_free(void *, void *);
-static	void	*tag_calloc(size_t, size_t, void *);
 
 static struct ohash	 tag_data;
 static struct tag_files	 tag_files;
@@ -58,7 +50,6 @@ static struct tag_files	 tag_files;
 struct tag_files *
 tag_init(void)
 {
-	struct ohash_info	 tag_info;
 	int			 ofd;
 
 	ofd = -1;
@@ -91,12 +82,7 @@ tag_init(void)
 	 * where various marked-up terms are documented.
 	 */
 
-	tag_info.alloc = tag_alloc;
-	tag_info.calloc = tag_calloc;
-	tag_info.free = tag_free;
-	tag_info.key_offset = offsetof(struct tag_entry, s);
-	tag_info.data = NULL;
-	ohash_init(&tag_data, 4, &tag_info);
+	mandoc_ohash_init(&tag_data, 4, offsetof(struct tag_entry, s));
 	return &tag_files;
 
 fail:
@@ -187,27 +173,3 @@ tag_signal(int signum)
 	/* NOTREACHED */
 	_exit(1);
 }
-
-/*
- * Memory management callback functions for ohash.
- */
-static void *
-tag_alloc(size_t sz, void *arg)
-{
-
-	return mandoc_malloc(sz);
-}
-
-static void *
-tag_calloc(size_t nmemb, size_t sz, void *arg)
-{
-
-	return mandoc_calloc(nmemb, sz);
-}
-
-static void
-tag_free(void *p, void *arg)
-{
-
-	free(p);
-}