Adding upstream version 1.7.2+ds.upstream/1.7.2+ds

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 279 insertions, 0 deletions

diff --git a/include/git2/object.h b/include/git2/object.h
new file mode 100644
index 0000000..6384aaa
--- /dev/null
+++ b/include/git2/object.h
@@ -0,0 +1,279 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_object_h__
+#define INCLUDE_git_object_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "buffer.h"
+
+/**
+ * @file git2/object.h
+ * @brief Git revision object management routines
+ * @defgroup git_object Git revision object management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+#define GIT_OBJECT_SIZE_MAX UINT64_MAX
+
+/**
+ * Lookup a reference to one of the objects in a repository.
+ *
+ * The generated reference is owned by the repository and
+ * should be closed with the `git_object_free` method
+ * instead of free'd manually.
+ *
+ * The 'type' parameter must match the type of the object
+ * in the odb; the method will fail otherwise.
+ * The special value 'GIT_OBJECT_ANY' may be passed to let
+ * the method guess the object's type.
+ *
+ * @param object pointer to the looked-up object
+ * @param repo the repository to look up the object
+ * @param id the unique identifier for the object
+ * @param type the type of the object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_object_lookup(
+		git_object **object,
+		git_repository *repo,
+		const git_oid *id,
+		git_object_t type);
+
+/**
+ * Lookup a reference to one of the objects in a repository,
+ * given a prefix of its identifier (short id).
+ *
+ * The object obtained will be so that its identifier
+ * matches the first 'len' hexadecimal characters
+ * (packets of 4 bits) of the given 'id'.
+ * 'len' must be at least GIT_OID_MINPREFIXLEN, and
+ * long enough to identify a unique object matching
+ * the prefix; otherwise the method will fail.
+ *
+ * The generated reference is owned by the repository and
+ * should be closed with the `git_object_free` method
+ * instead of free'd manually.
+ *
+ * The 'type' parameter must match the type of the object
+ * in the odb; the method will fail otherwise.
+ * The special value 'GIT_OBJECT_ANY' may be passed to let
+ * the method guess the object's type.
+ *
+ * @param object_out pointer where to store the looked-up object
+ * @param repo the repository to look up the object
+ * @param id a short identifier for the object
+ * @param len the length of the short identifier
+ * @param type the type of the object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_object_lookup_prefix(
+		git_object **object_out,
+		git_repository *repo,
+		const git_oid *id,
+		size_t len,
+		git_object_t type);
+
+
+/**
+ * Lookup an object that represents a tree entry.
+ *
+ * @param out buffer that receives a pointer to the object (which must be freed
+ *            by the caller)
+ * @param treeish root object that can be peeled to a tree
+ * @param path relative path from the root object to the desired object
+ * @param type type of object desired
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_object_lookup_bypath(
+		git_object **out,
+		const git_object *treeish,
+		const char *path,
+		git_object_t type);
+
+/**
+ * Get the id (SHA1) of a repository object
+ *
+ * @param obj the repository object
+ * @return the SHA1 id
+ */
+GIT_EXTERN(const git_oid *) git_object_id(const git_object *obj);
+
+/**
+ * Get a short abbreviated OID string for the object
+ *
+ * This starts at the "core.abbrev" length (default 7 characters) and
+ * iteratively extends to a longer string if that length is ambiguous.
+ * The result will be unambiguous (at least until new objects are added to
+ * the repository).
+ *
+ * @param out Buffer to write string into
+ * @param obj The object to get an ID for
+ * @return 0 on success, <0 for error
+ */
+GIT_EXTERN(int) git_object_short_id(git_buf *out, const git_object *obj);
+
+/**
+ * Get the object type of an object
+ *
+ * @param obj the repository object
+ * @return the object's type
+ */
+GIT_EXTERN(git_object_t) git_object_type(const git_object *obj);
+
+/**
+ * Get the repository that owns this object
+ *
+ * Freeing or calling `git_repository_close` on the
+ * returned pointer will invalidate the actual object.
+ *
+ * Any other operation may be run on the repository without
+ * affecting the object.
+ *
+ * @param obj the object
+ * @return the repository who owns this object
+ */
+GIT_EXTERN(git_repository *) git_object_owner(const git_object *obj);
+
+/**
+ * Close an open object
+ *
+ * This method instructs the library to close an existing
+ * object; note that git_objects are owned and cached by the repository
+ * so the object may or may not be freed after this library call,
+ * depending on how aggressive is the caching mechanism used
+ * by the repository.
+ *
+ * IMPORTANT:
+ * It *is* necessary to call this method when you stop using
+ * an object. Failure to do so will cause a memory leak.
+ *
+ * @param object the object to close
+ */
+GIT_EXTERN(void) git_object_free(git_object *object);
+
+/**
+ * Convert an object type to its string representation.
+ *
+ * The result is a pointer to a string in static memory and
+ * should not be free()'ed.
+ *
+ * @param type object type to convert.
+ * @return the corresponding string representation.
+ */
+GIT_EXTERN(const char *) git_object_type2string(git_object_t type);
+
+/**
+ * Convert a string object type representation to it's git_object_t.
+ *
+ * @param str the string to convert.
+ * @return the corresponding git_object_t.
+ */
+GIT_EXTERN(git_object_t) git_object_string2type(const char *str);
+
+/**
+ * Determine if the given git_object_t is a valid loose object type.
+ *
+ * @param type object type to test.
+ * @return true if the type represents a valid loose object type,
+ * false otherwise.
+ */
+GIT_EXTERN(int) git_object_typeisloose(git_object_t type);
+
+/**
+ * Recursively peel an object until an object of the specified type is met.
+ *
+ * If the query cannot be satisfied due to the object model,
+ * GIT_EINVALIDSPEC will be returned (e.g. trying to peel a blob to a
+ * tree).
+ *
+ * If you pass `GIT_OBJECT_ANY` as the target type, then the object will
+ * be peeled until the type changes. A tag will be peeled until the
+ * referenced object is no longer a tag, and a commit will be peeled
+ * to a tree. Any other object type will return GIT_EINVALIDSPEC.
+ *
+ * If peeling a tag we discover an object which cannot be peeled to
+ * the target type due to the object model, GIT_EPEEL will be
+ * returned.
+ *
+ * You must free the returned object.
+ *
+ * @param peeled Pointer to the peeled git_object
+ * @param object The object to be processed
+ * @param target_type The type of the requested object (a GIT_OBJECT_ value)
+ * @return 0 on success, GIT_EINVALIDSPEC, GIT_EPEEL, or an error code
+ */
+GIT_EXTERN(int) git_object_peel(
+	git_object **peeled,
+	const git_object *object,
+	git_object_t target_type);
+
+/**
+ * Create an in-memory copy of a Git object. The copy must be
+ * explicitly free'd or it will leak.
+ *
+ * @param dest Pointer to store the copy of the object
+ * @param source Original object to copy
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_object_dup(git_object **dest, git_object *source);
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+/**
+ * Analyzes a buffer of raw object content and determines its validity.
+ * Tree, commit, and tag objects will be parsed and ensured that they
+ * are valid, parseable content.  (Blobs are always valid by definition.)
+ * An error message will be set with an informative message if the object
+ * is not valid.
+ *
+ * @warning This function is experimental and its signature may change in
+ * the future.
+ *
+ * @param valid Output pointer to set with validity of the object content
+ * @param buf The contents to validate
+ * @param len The length of the buffer
+ * @param object_type The type of the object in the buffer
+ * @param oid_type The object ID type for the OIDs in the given buffer
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_object_rawcontent_is_valid(
+	int *valid,
+	const char *buf,
+	size_t len,
+	git_object_t object_type,
+	git_oid_t oid_type);
+#else
+/**
+ * Analyzes a buffer of raw object content and determines its validity.
+ * Tree, commit, and tag objects will be parsed and ensured that they
+ * are valid, parseable content.  (Blobs are always valid by definition.)
+ * An error message will be set with an informative message if the object
+ * is not valid.
+ *
+ * @warning This function is experimental and its signature may change in
+ * the future.
+ *
+ * @param valid Output pointer to set with validity of the object content
+ * @param buf The contents to validate
+ * @param len The length of the buffer
+ * @param object_type The type of the object in the buffer
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_object_rawcontent_is_valid(
+	int *valid,
+	const char *buf,
+	size_t len,
+	git_object_t object_type);
+#endif
+
+/** @} */
+GIT_END_DECL
+
+#endif