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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_errors_h__

#define INCLUDE_git_errors_h__

#include "common.h"

/**

* @file git2/errors.h

* @brief Error handling routines and variables

* @ingroup Git

* @{

*/

GIT_BEGIN_DECL

/** Generic return codes */

typedef enum {

/**

* No error occurred; the call was successful.

*/

GIT_OK = 0,

/**

* An error occurred; call `git_error_last` for more information.

*/

GIT_ERROR = -1,

GIT_ENOTFOUND = -3, /**< Requested object could not be found. */

GIT_EEXISTS = -4, /**< Object exists preventing operation. */

GIT_EAMBIGUOUS = -5, /**< More than one object matches. */

GIT_EBUFS = -6, /**< Output buffer too short to hold data. */

/**

* GIT_EUSER is a special error that is never generated by libgit2

* code. You can return it from a callback (e.g to stop an iteration)

* to know that it was generated by the callback and not by libgit2.

*/

GIT_EUSER = -7,

GIT_EBAREREPO = -8, /**< Operation not allowed on bare repository. */

GIT_EUNBORNBRANCH = -9, /**< HEAD refers to branch with no commits. */

GIT_EUNMERGED = -10, /**< Merge in progress prevented operation */

GIT_ENONFASTFORWARD = -11, /**< Reference was not fast-forwardable */

GIT_EINVALIDSPEC = -12, /**< Name/ref spec was not in a valid format */

GIT_ECONFLICT = -13, /**< Checkout conflicts prevented operation */

GIT_ELOCKED = -14, /**< Lock file prevented operation */

GIT_EMODIFIED = -15, /**< Reference value does not match expected */

GIT_EAUTH = -16, /**< Authentication error */

GIT_ECERTIFICATE = -17, /**< Server certificate is invalid */

GIT_EAPPLIED = -18, /**< Patch/merge has already been applied */

GIT_EPEEL = -19, /**< The requested peel operation is not possible */

GIT_EEOF = -20, /**< Unexpected EOF */

GIT_EINVALID = -21, /**< Invalid operation or input */

GIT_EUNCOMMITTED = -22, /**< Uncommitted changes in index prevented operation */

GIT_EDIRECTORY = -23, /**< The operation is not valid for a directory */

GIT_EMERGECONFLICT = -24, /**< A merge conflict exists and cannot continue */

GIT_PASSTHROUGH = -30, /**< A user-configured callback refused to act */

GIT_ITEROVER = -31, /**< Signals end of iteration with iterator */

GIT_RETRY = -32, /**< Internal only */

GIT_EMISMATCH = -33, /**< Hashsum mismatch in object */

GIT_EINDEXDIRTY = -34, /**< Unsaved changes in the index would be overwritten */

GIT_EAPPLYFAIL = -35, /**< Patch application failed */

GIT_EOWNER = -36, /**< The object is not owned by the current user */

GIT_TIMEOUT = -37, /**< The operation timed out */

GIT_EUNCHANGED = -38, /**< There were no changes */

GIT_ENOTSUPPORTED = -39, /**< An option is not supported */

GIT_EREADONLY = -40 /**< The subject is read-only */

} git_error_code;

/**

* Error classes are the category of error. They reflect the area of the

* code where an error occurred.

*/

typedef enum {

GIT_ERROR_NONE = 0,

GIT_ERROR_NOMEMORY,

GIT_ERROR_OS,

GIT_ERROR_INVALID,

GIT_ERROR_REFERENCE,

GIT_ERROR_ZLIB,

GIT_ERROR_REPOSITORY,

GIT_ERROR_CONFIG,

GIT_ERROR_REGEX,

GIT_ERROR_ODB,

GIT_ERROR_INDEX,

GIT_ERROR_OBJECT,

GIT_ERROR_NET,

GIT_ERROR_TAG,

GIT_ERROR_TREE,

GIT_ERROR_INDEXER,

GIT_ERROR_SSL,

GIT_ERROR_SUBMODULE,

GIT_ERROR_THREAD,

GIT_ERROR_STASH,

GIT_ERROR_CHECKOUT,

GIT_ERROR_FETCHHEAD,

GIT_ERROR_MERGE,

GIT_ERROR_SSH,

GIT_ERROR_FILTER,

GIT_ERROR_REVERT,

GIT_ERROR_CALLBACK,

GIT_ERROR_CHERRYPICK,

GIT_ERROR_DESCRIBE,

GIT_ERROR_REBASE,

GIT_ERROR_FILESYSTEM,

GIT_ERROR_PATCH,

GIT_ERROR_WORKTREE,

GIT_ERROR_SHA,

GIT_ERROR_HTTP,

GIT_ERROR_INTERNAL,

GIT_ERROR_GRAFTS

} git_error_t;

/**

* Structure to store extra details of the last error that occurred.

*

* This is kept on a per-thread basis if GIT_THREADS was defined when the

* library was build, otherwise one is kept globally for the library

*/

typedef struct {

char *message; /**< The error message for the last error. */

int klass; /**< The category of the last error. @type git_error_t */

} git_error;

/**

* Return the last `git_error` object that was generated for the

* current thread.

*

* This function will never return NULL.

*

* Callers should not rely on this to determine whether an error has

* occurred. For error checking, callers should examine the return

* codes of libgit2 functions.

*

* This call can only reliably report error messages when an error

* has occurred. (It may contain stale information if it is called

* after a different function that succeeds.)

*

* The memory for this object is managed by libgit2. It should not

* be freed.

*

* @return A pointer to a `git_error` object that describes the error.

*/

GIT_EXTERN(const git_error *) git_error_last(void);

/** @} */

GIT_END_DECL

#endif