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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.

*/

#include "common.h"

#include "threadstate.h"

#include "posix.h"

#include "buffer.h"

#include "libgit2.h"

/********************************************

* New error handling

********************************************/

static git_error g_git_oom_error = {

"Out of memory",

GIT_ERROR_NOMEMORY

};

static git_error g_git_uninitialized_error = {

"libgit2 has not been initialized; you must call git_libgit2_init",

GIT_ERROR_INVALID

};

static void set_error_from_buffer(int error_class)

{

git_error *error = &GIT_THREADSTATE->error_t;

git_buf *buf = &GIT_THREADSTATE->error_buf;

error->message = buf->ptr;

error->klass = error_class;

GIT_THREADSTATE->last_error = error;

}

static void set_error(int error_class, char *string)

{

git_buf *buf = &GIT_THREADSTATE->error_buf;

git_buf_clear(buf);

if (string) {

git_buf_puts(buf, string);

git__free(string);

}

set_error_from_buffer(error_class);

}

void git_error_set_oom(void)

{

GIT_THREADSTATE->last_error = &g_git_oom_error;

}

void git_error_set(int error_class, const char *fmt, ...)

{

va_list ap;

va_start(ap, fmt);

git_error_vset(error_class, fmt, ap);

va_end(ap);

}

void git_error_vset(int error_class, const char *fmt, va_list ap)

{

#ifdef GIT_WIN32

DWORD win32_error_code = (error_class == GIT_ERROR_OS) ? GetLastError() : 0;

#endif

int error_code = (error_class == GIT_ERROR_OS) ? errno : 0;

git_buf *buf = &GIT_THREADSTATE->error_buf;

git_buf_clear(buf);

if (fmt) {

git_buf_vprintf(buf, fmt, ap);

if (error_class == GIT_ERROR_OS)

git_buf_PUTS(buf, ": ");

}

if (error_class == GIT_ERROR_OS) {

#ifdef GIT_WIN32

char * win32_error = git_win32_get_error_message(win32_error_code);

if (win32_error) {

git_buf_puts(buf, win32_error);

git__free(win32_error);

SetLastError(0);

}

else

#endif

if (error_code)

git_buf_puts(buf, strerror(error_code));

if (error_code)

errno = 0;

}

if (!git_buf_oom(buf))

set_error_from_buffer(error_class);

}

int git_error_set_str(int error_class, const char *string)

{

git_buf *buf = &GIT_THREADSTATE->error_buf;

GIT_ASSERT_ARG(string);

git_buf_clear(buf);

git_buf_puts(buf, string);

if (git_buf_oom(buf))

return -1;

set_error_from_buffer(error_class);

return 0;

}

void git_error_clear(void)

{

if (GIT_THREADSTATE->last_error != NULL) {

set_error(0, NULL);

GIT_THREADSTATE->last_error = NULL;

}

errno = 0;

#ifdef GIT_WIN32

SetLastError(0);

#endif

}

const git_error *git_error_last(void)

{

/* If the library is not initialized, return a static error. */

if (!git_libgit2_init_count())

return &g_git_uninitialized_error;

return GIT_THREADSTATE->last_error;

}

int git_error_state_capture(git_error_state *state, int error_code)

{

git_error *error = GIT_THREADSTATE->last_error;

git_buf *error_buf = &GIT_THREADSTATE->error_buf;

memset(state, 0, sizeof(git_error_state));

if (!error_code)

return 0;

state->error_code = error_code;

state->oom = (error == &g_git_oom_error);

if (error) {

state->error_msg.klass = error->klass;

if (state->oom)

state->error_msg.message = g_git_oom_error.message;

else

state->error_msg.message = git_buf_detach(error_buf);

}

git_error_clear();

return error_code;

}

int git_error_state_restore(git_error_state *state)

{

int ret = 0;

git_error_clear();

if (state && state->error_msg.message) {

if (state->oom)

git_error_set_oom();

else

set_error(state->error_msg.klass, state->error_msg.message);

ret = state->error_code;

memset(state, 0, sizeof(git_error_state));

}

return ret;

}

void git_error_state_free(git_error_state *state)

{

if (!state)

return;

if (!state->oom)

git__free(state->error_msg.message);

memset(state, 0, sizeof(git_error_state));

}

int git_error_system_last(void)

{

#ifdef GIT_WIN32

return GetLastError();

#else

return errno;

#endif

}

void git_error_system_set(int code)

{

#ifdef GIT_WIN32

SetLastError(code);

#else

errno = code;

#endif

}

/* Deprecated error values and functions */

#ifndef GIT_DEPRECATE_HARD

const git_error *giterr_last(void)

{

return git_error_last();

}

void giterr_clear(void)

{

git_error_clear();

}

void giterr_set_str(int error_class, const char *string)

{

git_error_set_str(error_class, string);

}

void giterr_set_oom(void)

{

git_error_set_oom();

}

#endif