khash: move khash include into implementation files

The current map implementations directly include the "khash.h" headers
into their own headers to make available a set of static functions,
defines et cetera. Besides leaking the complete khash namespace into
files wherever khashes are used, this also triggers Clang's
-Wunused-function warnings when some of the static functions are not
being used at all.

Fix the issue by moving the includes into the respective map
implementation files. Add forward declares for all the map types to make
them known.

src/idxmap.c

@@ -7,6 +7,16 @@
 
 #include "idxmap.h"
 
+#define kmalloc git__malloc
+#define kcalloc git__calloc
+#define krealloc git__realloc
+#define kreallocarray git__reallocarray
+#define kfree git__free
+#include "khash.h"
+
+__KHASH_TYPE(idx, const git_index_entry *, git_index_entry *)
+__KHASH_TYPE(idxicase, const git_index_entry *, git_index_entry *)
+
 /* This is __ac_X31_hash_string but with tolower and it takes the entry's stage into account */
 static kh_inline khint_t idxentry_hash(const git_index_entry *e)
 {
@@ -104,11 +114,21 @@ void git_idxmap_free(git_idxmap *map)
 	kh_destroy(idx, map);
 }
 
+void git_idxmap_icase_free(git_idxmap_icase *map)
+{
+	kh_destroy(idxicase, map);
+}
+
 void git_idxmap_clear(git_idxmap *map)
 {
 	kh_clear(idx, map);
 }
 
+void git_idxmap_icase_clear(git_idxmap_icase *map)
+{
+	kh_clear(idxicase, map);
+}
+
 void git_idxmap_delete_at(git_idxmap *map, size_t idx)
 {
 	kh_del(idx, map, idx);

src/idxmap.h

@@ -9,23 +9,10 @@
 
 #include "common.h"
 
-#include <ctype.h>
 #include "git2/index.h"
 
-#define kmalloc git__malloc
-#define kcalloc git__calloc
-#define krealloc git__realloc
-#define kreallocarray git__reallocarray
-#define kfree git__free
-#include "khash.h"
-
-__KHASH_TYPE(idx, const git_index_entry *, git_index_entry *)
-__KHASH_TYPE(idxicase, const git_index_entry *, git_index_entry *)
-
-typedef khash_t(idx) git_idxmap;
-typedef khash_t(idxicase) git_idxmap_icase;
-
-typedef khiter_t git_idxmap_iter;
+typedef struct kh_idx_s git_idxmap;
+typedef struct kh_idxicase_s git_idxmap_icase;
 
 int git_idxmap_alloc(git_idxmap **map);
 int git_idxmap_icase_alloc(git_idxmap_icase **map);
@@ -41,7 +28,9 @@ int git_idxmap_has_data(git_idxmap *map, size_t idx);
 void git_idxmap_resize(git_idxmap *map, size_t size);
 void git_idxmap_icase_resize(git_idxmap_icase *map, size_t size);
 void git_idxmap_free(git_idxmap *map);
+void git_idxmap_icase_free(git_idxmap_icase *map);
 void git_idxmap_clear(git_idxmap *map);
+void git_idxmap_icase_clear(git_idxmap_icase *map);
 
 void git_idxmap_delete_at(git_idxmap *map, size_t idx);
 void git_idxmap_icase_delete_at(git_idxmap_icase *map, size_t idx);

src/offmap.c

@@ -7,6 +7,15 @@
 
 #include "offmap.h"
 
+#define kmalloc git__malloc
+#define kcalloc git__calloc
+#define krealloc git__realloc
+#define kreallocarray git__reallocarray
+#define kfree git__free
+#include "khash.h"
+
+__KHASH_TYPE(off, git_off_t, void *)
+
 __KHASH_IMPL(off, static kh_inline, git_off_t, void *, 1, kh_int64_hash_func, kh_int64_hash_equal)
 
 git_offmap *git_offmap_alloc(void)

src/offmap.h

@@ -11,15 +11,7 @@
 
 #include "git2/types.h"
 
-#define kmalloc git__malloc
-#define kcalloc git__calloc
-#define krealloc git__realloc
-#define kreallocarray git__reallocarray
-#define kfree git__free
-#include "khash.h"
-
-__KHASH_TYPE(off, git_off_t, void *)
-typedef khash_t(off) git_offmap;
+typedef struct kh_off_s git_offmap;
 
 git_offmap *git_offmap_alloc(void);
 void git_offmap_free(git_offmap *map);

src/oidmap.c

@@ -7,6 +7,15 @@
 
 #include "oidmap.h"
 
+#define kmalloc git__malloc
+#define kcalloc git__calloc
+#define krealloc git__realloc
+#define kreallocarray git__reallocarray
+#define kfree git__free
+#include "khash.h"
+
+__KHASH_TYPE(oid, const git_oid *, void *)
+
 GIT_INLINE(khint_t) git_oidmap_hash(const git_oid *oid)
 {
 	khint_t h;

src/oidmap.h

@@ -11,15 +11,7 @@
 
 #include "git2/oid.h"
 
-#define kmalloc git__malloc
-#define kcalloc git__calloc
-#define krealloc git__realloc
-#define kreallocarray git__reallocarray
-#define kfree git__free
-#include "khash.h"
-
-__KHASH_TYPE(oid, const git_oid *, void *)
-typedef khash_t(oid) git_oidmap;
+typedef struct kh_oid_s git_oidmap;
 
 git_oidmap *git_oidmap_alloc(void);
 void git_oidmap_free(git_oidmap *map);

src/strmap.c

@@ -7,6 +7,15 @@
 
 #include "strmap.h"
 
+#define kmalloc git__malloc
+#define kcalloc git__calloc
+#define krealloc git__realloc
+#define kreallocarray git__reallocarray
+#define kfree git__free
+#include "khash.h"
+
+__KHASH_TYPE(str, const char *, void *)
+
 __KHASH_IMPL(str, static kh_inline, const char *, void *, 1, kh_str_hash_func, kh_str_hash_equal)
 
 int git_strmap_alloc(git_strmap **map)

src/strmap.h

@@ -9,16 +9,7 @@
 
 #include "common.h"
 
-#define kmalloc git__malloc
-#define kcalloc git__calloc
-#define krealloc git__realloc
-#define kreallocarray git__reallocarray
-#define kfree git__free
-#include "khash.h"
-
-__KHASH_TYPE(str, const char *, void *)
-typedef khash_t(str) git_strmap;
-typedef khiter_t git_strmap_iter;
+typedef struct kh_str_s git_strmap;
 
 int git_strmap_alloc(git_strmap **map);
 void git_strmap_free(git_strmap *map);