netcdf-c/libdispatch/dreg.c
Dennis Heimbigner 9380790ea8 Support MSYS2/Mingw platform
re:

The current netcdf-c release has some problems with the mingw platform
on windows. Mostly they are path issues.

Changes to support mingw+msys2:
-------------------------------
* Enable option of looking into the windows registry to find
  the mingw root path. In aid of proper path handling.
* Add mingw+msys as a specific platform in configure.ac and move testing
  of the platform to the front so it is available early.
* Handle mingw X libncpoco (dynamic loader) properly even though
  mingw does not yet support it.
* Handle mingw X plugins properly even though mingw does not yet support it.
* Alias pwd='pwd -W' to better handle paths in shell scripts.
* Plus a number of other minor compile irritations.
* Disallow the use of multiple nc_open's on the same file for windows
  (and mingw) because windows does not seem to handle these properly.
  Not sure why we did not catch this earlier.
* Add mountpoint info to dpathmgr.c to help support mingw.
* Cleanup dpathmgr conversions.

Known problems:
---------------
* I have not been able to get shared libraries to work, so
  plugins/filters must be disabled.
* There is some kind of problem with libcurl that I have not solved,
  so all uses of libcurl (currently DAP+Byterange) must be disabled.

Misc. other fixes:
------------------
* Cleanup the relationship between ENABLE_PLUGINS and various other flags
  in CMakeLists.txt and configure.ac.
* Re-arrange the TESTDIRS order in Makefile.am.
* Add pseudo-breakpoint to nclog.[ch] for debugging.
* Improve the documentation of the path manager code in ncpathmgr.h
* Add better support for relative paths in dpathmgr.c
* Default the mode args to NCfopen to include "b" (binary) for windows.
* Add optional debugging output in various places.
* Make sure that everything builds with plugins disabled.
* Fix numerous (s)printf inconsistencies betweenb the format spec
  and the arguments.
2021-12-23 22:18:56 -07:00

47 lines
1.1 KiB
C

/*
* Copyright 2018, University Corporation for Atmospheric Research
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <windows.h>
#include <io.h>
#include <wchar.h>
#include <locale.h>
//#include <direct.h>
__declspec(dllexport)
int
getmountpoint(char* keyvalue, size_t size)
{
/* See if we can get the MSYS2|CYGWIN prefix from the registry */
LSTATUS stat;
const LPCSTR rpath = "SOFTWARE\\Cygwin\\setup\\";
const LPCSTR leaf = "rootdir";
HKEY key;
if(size == 0 || keyvalue == NULL)
return -1;
keyvalue[0] = '\0';
stat = RegOpenKeyA(HKEY_LOCAL_MACHINE, rpath, &key);
if(stat != ERROR_SUCCESS) {
// wprintf(L"RegOpenKeyA failed. Error code: %li\n", stat);
goto done;
}
stat = RegGetValueA(key, NULL, leaf, RRF_RT_REG_SZ, NULL, (PVOID)keyvalue, (LPDWORD)&size);
if(stat != ERROR_SUCCESS) {
// wprintf(L"RegGetValueA failed. Error code: %li\n", stat);
goto done;
}
done:
return (stat == ERROR_SUCCESS ? 0 : -1);
}