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/*
* Copyright (C) 2009-2011 the libgit2 contributors
*
* 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 "errors.h"
#include "posix.h"
#include "global.h"
#include <stdarg.h>
static struct {
int num;
const char *str;
} error_codes[] = {
{GIT_ERROR, "Unspecified error"},
{GIT_ENOTOID, "Input was not a properly formatted Git object id."},
{GIT_ENOTFOUND, "Object does not exist in the scope searched."},
{GIT_ENOMEM, "Not enough space available."},
{GIT_EOSERR, "Consult the OS error information."},
{GIT_EOBJTYPE, "The specified object is of invalid type"},
{GIT_EOBJCORRUPTED, "The specified object has its data corrupted"},
{GIT_ENOTAREPO, "The specified repository is invalid"},
{GIT_EINVALIDTYPE, "The object or config variable type is invalid or doesn't match"},
{GIT_EMISSINGOBJDATA, "The object cannot be written that because it's missing internal data"},
{GIT_EPACKCORRUPTED, "The packfile for the ODB is corrupted"},
{GIT_EFLOCKFAIL, "Failed to adquire or release a file lock"},
{GIT_EZLIB, "The Z library failed to inflate/deflate an object's data"},
{GIT_EBUSY, "The queried object is currently busy"},
{GIT_EINVALIDPATH, "The path is invalid"},
{GIT_EBAREINDEX, "The index file is not backed up by an existing repository"},
{GIT_EINVALIDREFNAME, "The name of the reference is not valid"},
{GIT_EREFCORRUPTED, "The specified reference has its data corrupted"},
{GIT_ETOONESTEDSYMREF, "The specified symbolic reference is too deeply nested"},
{GIT_EPACKEDREFSCORRUPTED, "The pack-refs file is either corrupted of its format is not currently supported"},
{GIT_EINVALIDPATH, "The path is invalid" },
{GIT_EREVWALKOVER, "The revision walker is empty; there are no more commits left to iterate"},
{GIT_EINVALIDREFSTATE, "The state of the reference is not valid"},
{GIT_ENOTIMPLEMENTED, "This feature has not been implemented yet"},
{GIT_EEXISTS, "A reference with this name already exists"},
{GIT_EOVERFLOW, "The given integer literal is too large to be parsed"},
{GIT_ENOTNUM, "The given literal is not a valid number"},
{GIT_EAMBIGUOUSOIDPREFIX, "The given oid prefix is ambiguous"},
};
const char *git_strerror(int num)
{
size_t i;
if (num == GIT_EOSERR)
return strerror(errno);
for (i = 0; i < ARRAY_SIZE(error_codes); i++)
if (num == error_codes[i].num)
return error_codes[i].str;
return "Unknown error";
}
static git_error git_error_OOM = {
GIT_ENOMEM,
"out of memory",
NULL,
NULL,
-1
};
git_error * git_error_oom(void)
{
/*
* Throw an out-of-memory error:
* what we return is actually a static pointer, because on
* oom situations we cannot afford to allocate a new error
* object.
*
* The `git_error_free` function will take care of not
* freeing this special type of error.
*
*/
return &git_error_OOM;
}
git_error * git_error_createf(const char *file, unsigned int line, int code,
const char *fmt, ...)
{
git_error *err;
va_list ap;
size_t size;
err = git__malloc(sizeof(git_error));
if (err == NULL)
return git_error_oom();
memset(err, 0x0, sizeof(git_error));
va_start(ap, fmt);
size = p_vsnprintf(err->msg, 0, fmt, ap);
va_end(ap);
size++;
err->msg = git__malloc(size);
if (err->msg == NULL) {
free(err);
return git_error_oom();
}
va_start(ap, fmt);
size = p_vsnprintf(err->msg, size, fmt, ap);
va_end(ap);
err->code = code;
err->child = GIT_GLOBAL->git_errno;
err->file = file;
err->line = line;
GIT_GLOBAL->git_errno = err;
return err;
}
git_error * git_error__quick_wrap(const char *file, int line,
git_error_code error, const char *msg)
{
if (error == GIT_SUCCESS)
return GIT_SUCCESS;
return git_error_createf(file, line, error, "%s", msg);
}
void git_error_free(git_error *err)
{
if (err == NULL)
return;
if (err->child)
git_error_free(err->child);
if (err->msg)
free(err->msg);
free(err);
}
void git_clearerror(void)
{
git_error_free(GIT_GLOBAL->git_errno);
GIT_GLOBAL->git_errno = NULL;
}
const char *git_lasterror(void)
{
return GIT_GLOBAL->git_errno == NULL ? NULL : GIT_GLOBAL->git_errno->msg;
}
void git_error_print_stack(git_error *error_in)
{
git_error *error;
if (error_in == NULL)
error_in = GIT_GLOBAL->git_errno;
for (error = error_in; error; error = error->child)
fprintf(stderr, "%s:%u %s\n", error->file, error->line, error->msg);
}
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