wm_platform.cc

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/* SPDX-FileCopyrightText: 2024 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#include "BLI_string.h"
 
#include "WM_api.hh" /* Own include. */
 
#ifdef WIN32
#  include "BLI_winstuff.h"
#elif defined(__APPLE__)
/* Pass. */
#else
#  include "BKE_context.hh"
 
#  include "BPY_extern_run.hh"
#endif
 
/* -------------------------------------------------------------------- */
bool WM_platform_associate_set(bool do_register, bool all_users, char **r_error_msg)
{
  bool result = false;
  *r_error_msg = nullptr;
#ifdef WIN32
  {
    if (all_users) {
      if (do_register) {
        result = BLI_windows_execute_self("--register-allusers", true, true, true);
      }
      else {
        result = BLI_windows_execute_self("--unregister-allusers", true, true, true);
      }
    }
    else {
      if (do_register) {
        result = BLI_windows_register_blend_extension(false);
      }
      else {
        result = BLI_windows_unregister_blend_extension(false);
      }
    }
  }
#elif defined(__APPLE__)
  /* Pass. */
  UNUSED_VARS(do_register, all_users);
#else
  {
    BPy_RunErrInfo err_info = {};
    err_info.use_single_line_error = true;
    err_info.r_string = r_error_msg;
 
    const char *imports[] = {"_bpy_internal", "_bpy_internal.freedesktop", nullptr};
    char expr_buf[128];
 
    SNPRINTF(expr_buf,
             "_bpy_internal.freedesktop.%s(all_users=%d)",
             do_register ? "register" : "unregister",
             int(all_users));
 
    /* NOTE: this could be null, however the running a script without `bpy.context` access
     * is a rare enough situation that it's better to keep this a requirement of the API and
     * pass in a temporary context instead of making an exception for this one case. */
    bContext *C_temp = CTX_create();
    char *value = nullptr;
    if (BPY_run_string_as_string_or_none(C_temp, imports, expr_buf, &err_info, &value)) {
      result = (value == nullptr);
      *r_error_msg = value;
    }
    /* Else `r_error_msg` will be set to a single line exception. */
    CTX_free(C_temp);
  }
#endif
  return result;
}