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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 Git error handling routines and variables
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/** Generic return codes */
typedef enum {
GIT_OK = 0, /**< No error */
GIT_ERROR = -1, /**< Generic error */
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_PASSTHROUGH = -30, /**< Internal only */
GIT_ITEROVER = -31, /**< Signals end of iteration with iterator */
} git_error_code;
/**
* 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;
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,
GITERR_REVERT,
GITERR_CALLBACK,
GITERR_CHERRYPICK,
GITERR_DESCRIBE,
GITERR_REBASE,
GITERR_FILESYSTEM
} 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);
/**
* 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
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