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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"
/********************************************
* New error handling
********************************************/
static git_error g_git_oom_error = {
"Out of memory",
GITERR_NOMEMORY
};
static void set_error_from_buffer(int error_class)
{
git_error *error = &GIT_GLOBAL->error_t;
git_buf *buf = &GIT_GLOBAL->error_buf;
error->message = buf->ptr;
error->klass = error_class;
GIT_GLOBAL->last_error = error;
}
static void set_error(int error_class, char *string)
{
git_buf *buf = &GIT_GLOBAL->error_buf;
git_buf_clear(buf);
if (string) {
git_buf_puts(buf, string);
git__free(string);
}
set_error_from_buffer(error_class);
}
void giterr_set_oom(void)
{
GIT_GLOBAL->last_error = &g_git_oom_error;
}
void giterr_set(int error_class, const char *string, ...)
{
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;
git_buf *buf = &GIT_GLOBAL->error_buf;
git_buf_clear(buf);
if (string) {
va_start(arglist, string);
git_buf_vprintf(buf, string, arglist);
va_end(arglist);
if (error_class == GITERR_OS)
git_buf_PUTS(buf, ": ");
}
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, 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);
}
void giterr_set_str(int error_class, const char *string)
{
git_buf *buf = &GIT_GLOBAL->error_buf;
assert(string);
if (!string)
return;
git_buf_clear(buf);
git_buf_puts(buf, string);
if (!git_buf_oom(buf))
set_error_from_buffer(error_class);
}
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)
{
if (GIT_GLOBAL->last_error != NULL) {
set_error(0, NULL);
GIT_GLOBAL->last_error = NULL;
}
errno = 0;
#ifdef GIT_WIN32
SetLastError(0);
#endif
}
static int giterr_detach(git_error *cpy)
{
git_error *error = GIT_GLOBAL->last_error;
git_buf *buf = &GIT_GLOBAL->error_buf;
assert(cpy);
if (!error)
return -1;
cpy->message = git_buf_detach(buf);
cpy->klass = error->klass;
if (error != &g_git_oom_error) {
error->message = NULL;
}
giterr_clear();
return 0;
}
const git_error *giterr_last(void)
{
return GIT_GLOBAL->last_error;
}
int giterr_capture(git_error_state *state, int error_code)
{
state->error_code = error_code;
if (error_code)
giterr_detach(&state->error_msg);
return error_code;
}
int giterr_restore(git_error_state *state)
{
if (state && state->error_code && state->error_msg.message) {
if (state->error_msg.message == g_git_oom_error.message) {
giterr_set_oom();
} else {
set_error(state->error_msg.klass, state->error_msg.message);
}
}
else
giterr_clear();
return state ? state->error_code : 0;
}
int giterr_system_last(void)
{
#ifdef GIT_WIN32
return GetLastError();
#else
return errno;
#endif
}
void giterr_system_set(int code)
{
#ifdef GIT_WIN32
SetLastError(code);
#else
errno = code;
#endif
}
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