packaging: Add contrib installation

[platform/upstream/git.git] / submodule-config.h

diff --git a/submodule-config.h b/submodule-config.h
index 93880cf..c11e22c 100644 (file)
--- a/submodule-config.h
+++ b/submodule-config.h
@@ -1,13 +1,37 @@
 #ifndef SUBMODULE_CONFIG_CACHE_H
 #define SUBMODULE_CONFIG_CACHE_H
 
+#include "cache.h"
+#include "config.h"
 #include "hashmap.h"
 #include "submodule.h"
 #include "strbuf.h"
 
+/**
+ * The submodule config cache API allows to read submodule
+ * configurations/information from specified revisions. Internally
+ * information is lazily read into a cache that is used to avoid
+ * unnecessary parsing of the same .gitmodules files. Lookups can be done by
+ * submodule path or name.
+ *
+ * Usage
+ * -----
+ *
+ * The caller can look up information about submodules by using the
+ * `submodule_from_path()` or `submodule_from_name()` functions. They return
+ * a `struct submodule` which contains the values. The API automatically
+ * initializes and allocates the needed infrastructure on-demand. If the
+ * caller does only want to lookup values from revisions the initialization
+ * can be skipped.
+ *
+ * If the internal cache might grow too big or when the caller is done with
+ * the API, all internally cached values can be freed with submodule_free().
+ *
+ */
+
 /*
  * Submodule entry containing the information about a certain submodule
- * in a certain revision.
+ * in a certain revision. It is returned by the lookup functions.
  */
 struct submodule {
        const char *path;
@@ -17,33 +41,51 @@ struct submodule {
        const char *ignore;
        const char *branch;
        struct submodule_update_strategy update_strategy;
-       /* the sha1 blob id of the responsible .gitmodules file */
-       unsigned char gitmodules_sha1[20];
+       /* the object id of the responsible .gitmodules file */
+       struct object_id gitmodules_oid;
        int recommend_shallow;
 };
 
+#define SUBMODULE_INIT { NULL, NULL, NULL, RECURSE_SUBMODULES_NONE, \
+       NULL, NULL, SUBMODULE_UPDATE_STRATEGY_INIT, { { 0 } }, -1 };
+
 struct submodule_cache;
 struct repository;
 
-extern void submodule_cache_free(struct submodule_cache *cache);
+void submodule_cache_free(struct submodule_cache *cache);
 
-extern int parse_submodule_fetchjobs(const char *var, const char *value);
-extern int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg);
+int parse_submodule_fetchjobs(const char *var, const char *value);
+int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg);
 struct option;
-extern int option_fetch_parse_recurse_submodules(const struct option *opt,
-                                                const char *arg, int unset);
-extern int parse_update_recurse_submodules_arg(const char *opt, const char *arg);
-extern int parse_push_recurse_submodules_arg(const char *opt, const char *arg);
-extern void repo_read_gitmodules(struct repository *repo);
-extern void gitmodules_config_oid(const struct object_id *commit_oid);
-extern const struct submodule *submodule_from_name(
-               const struct object_id *commit_or_tree, const char *name);
-extern const struct submodule *submodule_from_path(
-               const struct object_id *commit_or_tree, const char *path);
-extern const struct submodule *submodule_from_cache(struct repository *repo,
-                                                   const struct object_id *treeish_name,
-                                                   const char *key);
-extern void submodule_free(void);
+int option_fetch_parse_recurse_submodules(const struct option *opt,
+                                         const char *arg, int unset);
+int parse_update_recurse_submodules_arg(const char *opt, const char *arg);
+int parse_push_recurse_submodules_arg(const char *opt, const char *arg);
+void repo_read_gitmodules(struct repository *repo, int skip_if_read);
+void gitmodules_config_oid(const struct object_id *commit_oid);
+
+/**
+ * Same as submodule_from_path but lookup by name.
+ */
+const struct submodule *submodule_from_name(struct repository *r,
+                                           const struct object_id *commit_or_tree,
+                                           const char *name);
+
+/**
+ * Given a tree-ish in the superproject and a path, return the submodule that
+ * is bound at the path in the named tree.
+ */
+const struct submodule *submodule_from_path(struct repository *r,
+                                           const struct object_id *commit_or_tree,
+                                           const char *path);
+
+/**
+ * Use these to free the internally cached values.
+ */
+void submodule_free(struct repository *r);
+
+int print_config_from_gitmodules(struct repository *repo, const char *key);
+int config_set_in_gitmodules_file_gently(const char *key, const char *value);
 
 /*
  * Returns 0 if the name is syntactically acceptable as a submodule "name"
@@ -52,4 +94,15 @@ extern void submodule_free(void);
  */
 int check_submodule_name(const char *name);
 
+/*
+ * Note: these helper functions exist solely to maintain backward
+ * compatibility with 'fetch' and 'update_clone' storing configuration in
+ * '.gitmodules'.
+ *
+ * New helpers to retrieve arbitrary configuration from the '.gitmodules' file
+ * should NOT be added.
+ */
+void fetch_config_from_gitmodules(int *max_children, int *recurse_submodules);
+void update_clone_config_from_gitmodules(int *max_jobs);
+
 #endif /* SUBMODULE_CONFIG_H */