git/compat
Johannes Schindelin db2f7c48cb Win32: simplify loading of DLL functions
Dynamic loading of DLL functions is duplicated in several places in Git
for Windows' source code.

This patch adds a pair of macros to simplify the process: the
DECLARE_PROC_ADDR(<dll>, <return-type>, <function-name>,
...<function-parameter-types>...) macro to be used at the beginning of a
code block, and the INIT_PROC_ADDR(<function-name>) macro to call before
using the declared function. The return value of the INIT_PROC_ADDR()
call has to be checked; If it is NULL, the function was not found in the
specified DLL.

Example:

        DECLARE_PROC_ADDR(kernel32.dll, BOOL, CreateHardLinkW,
                          LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);

        if (!INIT_PROC_ADDR(CreateHardLinkW))
                return error("Could not find CreateHardLinkW() function";

	if (!CreateHardLinkW(source, target, NULL))
		return error("could not create hardlink from %S to %S",
			     source, target);
	return 0;

Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-26 11:02:49 +09:00
..
nedmalloc compat: move strdup(3) replacement to its own file 2016-09-07 10:41:45 -07:00
poll mingw: avoid warnings when casting HANDLEs to int 2016-01-15 14:01:52 -08:00
regex Spelling fixes 2017-06-27 10:35:49 -07:00
vcbuild MSVC: use shipped headers instead of fallback definitions 2016-03-30 11:16:20 -07:00
win32 Win32: simplify loading of DLL functions 2017-09-26 11:02:49 +09:00
apple-common-crypto.h imap-send: use HMAC() function provided by OpenSSL 2016-04-08 11:45:47 -07:00
basename.c compat/basename.c: provide a dirname() compatibility function 2016-01-12 10:40:54 -08:00
bswap.h bswap: convert get_be16, get_be32 and put_be32 to inline functions 2017-07-17 14:54:15 -07:00
cygwin.c cygwin: allow pushing to UNC paths 2017-07-05 14:01:03 -07:00
cygwin.h cygwin: allow pushing to UNC paths 2017-07-05 14:01:03 -07:00
fopen.c git_fopen: fix a sparse 'not declared' warning 2017-05-26 12:33:55 +09:00
gmtime.c date: recognize bogus FreeBSD gmtime output 2014-04-01 14:39:04 -07:00
hstrerror.c compat/hstrerror: convert sprintf to snprintf 2015-09-25 10:18:18 -07:00
inet_ntop.c compat/inet_ntop: fix off-by-one in inet_ntop4 2015-09-25 10:18:18 -07:00
inet_pton.c Drop system includes from inet_pton/inet_ntop compatibility wrappers 2012-02-05 16:32:33 -08:00
memmem.c optimize compat/ memmem() 2009-03-02 18:28:06 -08:00
mingw.c Merge branch 'nd/fopen-errors' 2017-06-13 13:47:09 -07:00
mingw.h Merge branch 'js/bs-is-a-dir-sep-on-windows' into maint 2017-06-05 09:03:15 +09:00
mkdir.c compat: some mkdir() do not like a slash at the end 2012-08-24 09:48:51 -07:00
mkdtemp.c Fix gitmkdtemp: correct test for mktemp() return value 2010-02-25 12:08:22 -08:00
mmap.c wrapper.c: add xpread() similar to xread() 2014-04-10 12:18:55 -07:00
msvc.c win32: use our own dirent.h 2010-11-23 16:06:50 -08:00
msvc.h MSVC: fix stat definition hell 2013-09-11 11:08:52 -07:00
obstack.c obstack.c: Fix some sparse warnings 2011-09-11 14:43:33 -07:00
obstack.h obstack: fix spelling of similar 2013-04-12 12:23:20 -07:00
pread.c
precompose_utf8.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
precompose_utf8.h probe_utf8_pathname_composition: use internal strbuf 2015-10-05 11:06:49 -07:00
qsort_s.c compat: add qsort_s() 2017-01-23 11:02:34 -08:00
qsort.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
setenv.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
sha1-chunked.c sha1: allow limiting the size of the data passed to SHA1_Update() 2015-11-05 10:35:11 -08:00
sha1-chunked.h sha1: allow limiting the size of the data passed to SHA1_Update() 2015-11-05 10:35:11 -08:00
snprintf.c MSVC: vsnprintf in Visual Studio 2015 doesn't need SNPRINTF_SIZE_CORR any more 2016-03-30 11:13:01 -07:00
stat.c compat: convert modes to use portable file type values 2014-12-04 11:58:36 -08:00
strcasestr.c
strdup.c compat: move strdup(3) replacement to its own file 2016-09-07 10:41:45 -07:00
strlcpy.c
strtoimax.c Add strtoimax() compatibility function. 2011-11-02 13:06:30 -07:00
strtoumax.c
terminal.c strbuf: introduce strbuf_getline_{lf,nul}() 2016-01-15 10:12:51 -08:00
terminal.h add generic terminal prompt function 2011-12-12 16:09:38 -08:00
unsetenv.c Revert "compat/unsetenv.c: Fix a sparse warning" 2013-07-21 15:09:56 -07:00
win32.h mingw: rename WIN32 cpp macro to GIT_WINDOWS_NATIVE 2013-05-08 12:14:35 -07:00
win32mmap.c mmap(win32): avoid expensive fstat() call 2016-04-22 15:01:16 -07:00
winansi.c winansi: avoid buffer overrun 2017-05-08 12:18:19 +09:00