[PATCH v2 07/36] odb-helper: add 'enum odb_helper_type'

[Christian Couder <christian.couder@gmail.com>]

As there will be different kinds of helpers, let's add
an "enum odb_helper_type" to tell between the different
kinds.

Let's add a field with this type in "struct odb_helper",
and set it when reading the config file.

While at it let's also make it possible to find an helper
of a specific kind by adding a new find_odb_helper()
function.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 external-odb.c | 13 +++++++++++++
 external-odb.h | 10 ++++++++++
 odb-helper.h   |  3 +++
 3 files changed, 26 insertions(+)

diff --git a/external-odb.c b/external-odb.c
index 5d0afb9762..9c77180d6c 100644
--- a/external-odb.c
+++ b/external-odb.c
@@ -57,6 +57,19 @@ int has_external_odb(void)
 	return !!helpers;
 }
 
+struct odb_helper *find_odb_helper(const char *dealer, enum odb_helper_type type)
+{
+	struct odb_helper *o;
+
+	external_odb_init();
+
+	for (o = helpers; o; o = o->next)
+		if (!strcmp(o->dealer, dealer) && o->type == type)
+			return o;
+
+	return NULL;
+}
+
 const char *external_odb_root(void)
 {
 	static const char *root;
diff --git a/external-odb.h b/external-odb.h
index fd6708163e..27c3d39c1b 100644
--- a/external-odb.h
+++ b/external-odb.h
@@ -1,7 +1,17 @@
 #ifndef EXTERNAL_ODB_H
 #define EXTERNAL_ODB_H
 
+enum odb_helper_type {
+	ODB_HELPER_NONE = 0,
+	ODB_HELPER_GIT_REMOTE,
+	ODB_HELPER_SCRIPT_CMD,
+	ODB_HELPER_SUBPROCESS_CMD,
+	OBJ_HELPER_MAX
+};
+
 extern int has_external_odb(void);
+extern struct odb_helper *find_odb_helper(const char *dealer,
+					  enum odb_helper_type type);
 extern const char *external_odb_root(void);
 extern int external_odb_has_object(const unsigned char *sha1);
 extern int external_odb_get_direct(const unsigned char *sha1);
diff --git a/odb-helper.h b/odb-helper.h
index 57b14fe814..d4b968693f 100644
--- a/odb-helper.h
+++ b/odb-helper.h
@@ -1,9 +1,12 @@
 #ifndef ODB_HELPER_H
 #define ODB_HELPER_H
 
+#include "external-odb.h"
+
 struct odb_helper {
 	const char *name;
 	const char *dealer;
+	enum odb_helper_type type;
 
 	struct odb_helper_object {
 		struct object_id oid;
-- 
2.17.0.rc0.37.g8f476fabe9