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* 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_common_h__

#define INCLUDE_common_h__

#include "git2/common.h"

#include "cc-compat.h"

/** Declare a function as always inlined. */

#if defined(_MSC_VER)

# define GIT_INLINE(type) static __inline type

#else

# define GIT_INLINE(type) static inline type

#endif

/** Support for gcc/clang __has_builtin intrinsic */

#ifndef __has_builtin

# define __has_builtin(x) 0

#endif

#include <assert.h>

#include <errno.h>

#include <limits.h>

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <sys/types.h>

#include <sys/stat.h>

#ifdef GIT_WIN32

# include <io.h>

# include <direct.h>

# include <winsock2.h>

# include <windows.h>

# include <ws2tcpip.h>

# include "win32/msvc-compat.h"

# include "win32/mingw-compat.h"

# include "win32/win32-compat.h"

# include "win32/error.h"

# include "win32/version.h"

# ifdef GIT_THREADS

# include "win32/thread.h"

# endif

# if defined(GIT_MSVC_CRTDBG)

# include "win32/w32_stack.h"

# include "win32/w32_crtdbg_stacktrace.h"

# endif

#else

# include <unistd.h>

# include <strings.h>

# ifdef GIT_THREADS

# include <pthread.h>

# include <sched.h>

# endif

#define GIT_STDLIB_CALL

#ifdef GIT_USE_STAT_ATIMESPEC

# define st_atim st_atimespec

# define st_ctim st_ctimespec

# define st_mtim st_mtimespec

#endif

# include <arpa/inet.h>

#endif

#include "git2/types.h"

#include "git2/errors.h"

#include "thread-utils.h"

#include "integer.h"

#include <regex.h>

#define DEFAULT_BUFSIZE 65536

#define FILEIO_BUFSIZE DEFAULT_BUFSIZE

#define FILTERIO_BUFSIZE DEFAULT_BUFSIZE

#define NETIO_BUFSIZE DEFAULT_BUFSIZE

/**

* Check a pointer allocation result, returning -1 if it failed.

#define GITERR_CHECK_ALLOC(ptr) if (ptr == NULL) { return -1; }

/**

* Check a buffer allocation result, returning -1 if it failed.

#define GITERR_CHECK_ALLOC_BUF(buf) if ((void *)(buf) == NULL || git_buf_oom(buf)) { return -1; }

/**

* Check a return value and propagate result if non-zero.

#define GITERR_CHECK_ERROR(code) \

do { int _err = (code); if (_err) return _err; } while (0)

/**

* Set the error message for this thread, formatting as needed.

void giterr_set(int error_class, const char *string, ...) GIT_FORMAT_PRINTF(2, 3);

/**

* Set the error message for a regex failure, using the internal regex

* error code lookup and return a libgit error code.

int giterr_set_regex(const regex_t *regex, int error_code);

/**

* Set error message for user callback if needed.

* If the error code in non-zero and no error message is set, this

* sets a generic error message.

* @return This always returns the `error_code` parameter.

GIT_INLINE(int) giterr_set_after_callback_function(

int error_code, const char *action)

{

if (error_code) {

const git_error *e = giterr_last();

if (!e || !e->message)

giterr_set(e ? e->klass : GITERR_CALLBACK,

"%s callback returned %d", action, error_code);

}

return error_code;

}

#ifdef GIT_WIN32

#define giterr_set_after_callback(code) \

giterr_set_after_callback_function((code), __FUNCTION__)

#else

#define giterr_set_after_callback(code) \

giterr_set_after_callback_function((code), __func__)

#endif

/**

* Gets the system error code for this thread.

int giterr_system_last(void);

/**

* Sets the system error code for this thread.

void giterr_system_set(int code);

/**

* Structure to preserve libgit2 error state

typedef struct {

int error_code;

unsigned int oom : 1;

git_error error_msg;

} git_error_state;

/**

* Capture current error state to restore later, returning error code.

* If `error_code` is zero, this does not clear the current error state.

* You must either restore this error state, or free it.

extern int giterr_state_capture(git_error_state *state, int error_code);

/**

* Restore error state to a previous value, returning saved error code.

extern int giterr_state_restore(git_error_state *state);

/** Free an error state. */

extern void giterr_state_free(git_error_state *state);

/**

* Check a versioned structure for validity

GIT_INLINE(int) giterr__check_version(const void *structure, unsigned int expected_max, const char *name)

{

unsigned int actual;

if (!structure)

return 0;

actual = *(const unsigned int*)structure;

if (actual > 0 && actual <= expected_max)

return 0;

giterr_set(GITERR_INVALID, "invalid version %d on %s", actual, name);

return -1;

}

#define GITERR_CHECK_VERSION(S,V,N) if (giterr__check_version(S,V,N) < 0) return -1

/**

* Initialize a structure with a version.

GIT_INLINE(void) git__init_structure(void *structure, size_t len, unsigned int version)

{

memset(structure, 0, len);

*((int*)structure) = version;

}

#define GIT_INIT_STRUCTURE(S,V) git__init_structure(S, sizeof(*S), V)

#define GIT_INIT_STRUCTURE_FROM_TEMPLATE(PTR,VERSION,TYPE,TPL) do { \

TYPE _tmpl = TPL; \

GITERR_CHECK_VERSION(&(VERSION), _tmpl.version, #TYPE); \

memcpy((PTR), &_tmpl, sizeof(_tmpl)); } while (0)

/** Check for additive overflow, setting an error if would occur. */

#define GIT_ADD_SIZET_OVERFLOW(out, one, two) \

(git__add_sizet_overflow(out, one, two) ? (giterr_set_oom(), 1) : 0)

/** Check for additive overflow, setting an error if would occur. */

#define GIT_MULTIPLY_SIZET_OVERFLOW(out, nelem, elsize) \

(git__multiply_sizet_overflow(out, nelem, elsize) ? (giterr_set_oom(), 1) : 0)

/** Check for additive overflow, failing if it would occur. */

#define GITERR_CHECK_ALLOC_ADD(out, one, two) \

if (GIT_ADD_SIZET_OVERFLOW(out, one, two)) { return -1; }

#define GITERR_CHECK_ALLOC_ADD3(out, one, two, three) \

if (GIT_ADD_SIZET_OVERFLOW(out, one, two) || \

GIT_ADD_SIZET_OVERFLOW(out, *(out), three)) { return -1; }

#define GITERR_CHECK_ALLOC_ADD4(out, one, two, three, four) \

if (GIT_ADD_SIZET_OVERFLOW(out, one, two) || \

GIT_ADD_SIZET_OVERFLOW(out, *(out), three) || \

GIT_ADD_SIZET_OVERFLOW(out, *(out), four)) { return -1; }

/** Check for multiplicative overflow, failing if it would occur. */

#define GITERR_CHECK_ALLOC_MULTIPLY(out, nelem, elsize) \

if (GIT_MULTIPLY_SIZET_OVERFLOW(out, nelem, elsize)) { return -1; }

/* NOTE: other giterr functions are in the public errors.h header file */

#include "util.h"

#endif /* INCLUDE_common_h__ */

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