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errors.c

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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 "global.h"

#include "posix.h"

#include "buffer.h"

#include <stdarg.h>

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

* New error handling

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

static git_error g_git_oom_error = {

"Out of memory",

GITERR_NOMEMORY

};

static void set_error(int error_class, char *string)

{

git_error *error = &GIT_GLOBAL->error_t;

git__free(error->message);

error->message = string;

error->klass = error_class;

GIT_GLOBAL->last_error = error;

}

void giterr_set_oom(void)

{

GIT_GLOBAL->last_error = &g_git_oom_error;

}

void giterr_set(int error_class, const char *string, ...)

{

git_buf buf = GIT_BUF_INIT;

va_list arglist;

#ifdef GIT_WIN32

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

#endif

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

va_start(arglist, string);

git_buf_vprintf(&buf, string, arglist);

va_end(arglist);

if (error_class == GITERR_OS) {

#ifdef GIT_WIN32

char * win32_error = git_win32_get_error_message(win32_error_code);

if (win32_error) {

git_buf_PUTS(&buf, ": ");

git_buf_puts(&buf, win32_error);

git__free(win32_error);

SetLastError(0);

}

else

#endif

if (error_code) {

git_buf_PUTS(&buf, ": ");

git_buf_puts(&buf, strerror(error_code));

}

if (error_code)

errno = 0;

}

if (!git_buf_oom(&buf))

set_error(error_class, git_buf_detach(&buf));

}

void giterr_set_str(int error_class, const char *string)

{

char *message;

assert(string);

message = git__strdup(string);

if (message)

set_error(error_class, message);

}

int giterr_set_regex(const regex_t *regex, int error_code)

{

char error_buf[1024];

assert(error_code);

regerror(error_code, regex, error_buf, sizeof(error_buf));

giterr_set_str(GITERR_REGEX, error_buf);

if (error_code == REG_NOMATCH)

return GIT_ENOTFOUND;

return GIT_EINVALIDSPEC;

}

void giterr_clear(void)

{

GIT_GLOBAL->last_error = NULL;

errno = 0;

#ifdef GIT_WIN32

SetLastError(0);

#endif

}

const git_error *giterr_last(void)

{

return GIT_GLOBAL->last_error;

}