/*
* 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"
#include "buffer.h"
/**
* @file git2/errors.h
* @brief Git error handling routines and variables
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/** Generic return codes */
typedef enum {
GIT_OK = 0,
GIT_ERROR = -1,
GIT_ENOTFOUND = -3,
GIT_EEXISTS = -4,
GIT_EAMBIGUOUS = -5,
GIT_EBUFS = -6,
GIT_EUSER = -7,
GIT_EBAREREPO = -8,
GIT_EUNBORNBRANCH = -9,
GIT_EUNMERGED = -10,
GIT_ENONFASTFORWARD = -11,
GIT_EINVALIDSPEC = -12,
GIT_EMERGECONFLICT = -13,
GIT_ELOCKED = -14,
GIT_PASSTHROUGH = -30,
GIT_ITEROVER = -31,
} git_error_code;
typedef struct {
char *message;
int klass;
} git_error;
/** Error classes */
typedef enum {
GITERR_NONE = 0,
GITERR_NOMEMORY,
GITERR_OS,
GITERR_INVALID,
GITERR_REFERENCE,
GITERR_ZLIB,
GITERR_REPOSITORY,
GITERR_CONFIG,
GITERR_REGEX,
GITERR_ODB,
GITERR_INDEX,
GITERR_OBJECT,
GITERR_NET,
GITERR_TAG,
GITERR_TREE,
GITERR_INDEXER,
GITERR_SSL,
GITERR_SUBMODULE,
GITERR_THREAD,
GITERR_STASH,
GITERR_CHECKOUT,
GITERR_FETCHHEAD,
GITERR_MERGE,
GITERR_SSH,
GITERR_FILTER,
} git_error_t;
/**
* Return the last `git_error` object that was generated for the
* current thread or NULL if no error has occurred.
*
* @return A git_error object.
*/
GIT_EXTERN(const git_error *) giterr_last(void);
/**
* Clear the last library error that occurred for this thread.
*/
GIT_EXTERN(void) giterr_clear(void);
/**
* Get the last error data and clear it.
*
* This copies the last error into the given `git_error` struct
* and returns 0 if the copy was successful, leaving the error
* cleared as if `giterr_clear` had been called.
*
* If there was no existing error in the library, -1 will be returned
* and the contents of `cpy` will be left unmodified.
*/
GIT_EXTERN(int) giterr_detach(git_error *cpy);
/**
* Set the error message string for this thread.
*
* This function is public so that custom ODB backends and the like can
* relay an error message through libgit2. Most regular users of libgit2
* will never need to call this function -- actually, calling it in most
* circumstances (for example, calling from within a callback function)
* will just end up having the value overwritten by libgit2 internals.
*
* This error message is stored in thread-local storage and only applies
* to the particular thread that this libgit2 call is made from.
*
* NOTE: Passing the `error_class` as GITERR_OS has a special behavior: we
* attempt to append the system default error message for the last OS error
* that occurred and then clear the last error. The specific implementation
* of looking up and clearing this last OS error will vary by platform.
*
* @param error_class One of the `git_error_t` enum above describing the
* general subsystem that is responsible for the error.
* @param string The formatted error message to keep
*/
GIT_EXTERN(void) giterr_set_str(int error_class, const char *string);
/**
* Set the error message to a special value for memory allocation failure.
*
* The normal `giterr_set_str()` function attempts to `strdup()` the string
* that is passed in. This is not a good idea when the error in question
* is a memory allocation failure. That circumstance has a special setter
* function that sets the error string to a known and statically allocated
* internal value.
*/
GIT_EXTERN(void) giterr_set_oom(void);
/** @} */
GIT_END_DECL
#endif
