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/*
* 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_revparse_h__
#define INCLUDE_git_revparse_h__
#include "common.h"
#include "types.h"
/**
* @file git2/revparse.h
* @brief Git revision parsing routines
* @defgroup git_revparse Git revision parsing routines
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Find a single object, as specified by a revision string. See `man gitrevisions`,
* or http://git-scm.com/docs/git-rev-parse.html#_specifying_revisions for
* information on the syntax accepted.
*
* @param out pointer to output object
* @param repo the repository to search in
* @param spec the textual specification for an object
* @return 0 on success, GIT_ENOTFOUND, GIT_EAMBIGUOUS, GIT_EINVALIDSPEC or an error code
*/
GIT_EXTERN(int) git_revparse_single(git_object **out, git_repository *repo, const char *spec);
/**
* Revparse flags. These indicate the intended behavior of the spec passed to
* git_revparse.
*/
typedef enum {
/** The spec targeted a single object. */
GIT_REVPARSE_SINGLE = 1 << 0,
/** The spec targeted a range of commits. */
GIT_REVPARSE_RANGE = 1 << 1,
/** The spec used the '...' operator, which invokes special semantics. */
GIT_REVPARSE_MERGE_BASE = 1 << 2,
} git_revparse_flag_t;
/**
* Parse a revision string for left, right, and intent. See `man gitrevisions` or
* http://git-scm.com/docs/git-rev-parse.html#_specifying_revisions for information
* on the syntax accepted.
*
* @param left buffer that receives the target of the left side of a range operator. If
* there is no range operator, this buffer receives the single target.
* @param right buffer that receives the target of the right side of a range operator.
* This is only filled in if `spec` specifies a range of commits. May
* be NULL.
* @param flags buffer that receives a bitwise combination of `git_revparse_flag_t` values.
* May be NULL.
* @param repo the repository to search in
* @param spec the rev-parse spec to parse
* @return 0 on success, GIT_INVALIDSPEC, GIT_ENOTFOUND, GIT_EAMBIGUOUS or an error code
*/
GIT_EXTERN(int) git_revparse(
git_object **left,
git_object **right,
unsigned int *flags,
git_repository *repo,
const char *spec);
/** @} */
GIT_END_DECL
#endif
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