Successful beginnings of the winter theme

2 files changed, 97 insertions, 6 deletions

diff --git a/themes/dist/output.js b/themes/dist/output.js
index 9a83997..9eb0f70 100644
--- a/themes/dist/output.js
+++ b/themes/dist/output.js
@@ -1835,6 +1835,82 @@ var ASM_CONSTS = {
       return demangleAll(js);
     }
 
+  function _tzset_impl() {
+      var currentYear = new Date().getFullYear();
+      var winter = new Date(currentYear, 0, 1);
+      var summer = new Date(currentYear, 6, 1);
+      var winterOffset = winter.getTimezoneOffset();
+      var summerOffset = summer.getTimezoneOffset();
+  
+      // Local standard timezone offset. Local standard time is not adjusted for daylight savings.
+      // This code uses the fact that getTimezoneOffset returns a greater value during Standard Time versus Daylight Saving Time (DST).
+      // Thus it determines the expected output during Standard Time, and it compares whether the output of the given date the same (Standard) or less (DST).
+      var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
+  
+      // timezone is specified as seconds west of UTC ("The external variable
+      // `timezone` shall be set to the difference, in seconds, between
+      // Coordinated Universal Time (UTC) and local standard time."), the same
+      // as returned by stdTimezoneOffset.
+      // See http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html
+      HEAP32[((__get_timezone())>>2)] = stdTimezoneOffset * 60;
+  
+      HEAP32[((__get_daylight())>>2)] = Number(winterOffset != summerOffset);
+  
+      function extractZone(date) {
+        var match = date.toTimeString().match(/\(([A-Za-z ]+)\)$/);
+        return match ? match[1] : "GMT";
+      };
+      var winterName = extractZone(winter);
+      var summerName = extractZone(summer);
+      var winterNamePtr = allocateUTF8(winterName);
+      var summerNamePtr = allocateUTF8(summerName);
+      if (summerOffset < winterOffset) {
+        // Northern hemisphere
+        HEAP32[((__get_tzname())>>2)] = winterNamePtr;
+        HEAP32[(((__get_tzname())+(4))>>2)] = summerNamePtr;
+      } else {
+        HEAP32[((__get_tzname())>>2)] = summerNamePtr;
+        HEAP32[(((__get_tzname())+(4))>>2)] = winterNamePtr;
+      }
+    }
+  function _tzset() {
+      // TODO: Use (malleable) environment variables instead of system settings.
+      if (_tzset.called) return;
+      _tzset.called = true;
+      _tzset_impl();
+    }
+  function _localtime_r(time, tmPtr) {
+      _tzset();
+      var date = new Date(HEAP32[((time)>>2)]*1000);
+      HEAP32[((tmPtr)>>2)] = date.getSeconds();
+      HEAP32[(((tmPtr)+(4))>>2)] = date.getMinutes();
+      HEAP32[(((tmPtr)+(8))>>2)] = date.getHours();
+      HEAP32[(((tmPtr)+(12))>>2)] = date.getDate();
+      HEAP32[(((tmPtr)+(16))>>2)] = date.getMonth();
+      HEAP32[(((tmPtr)+(20))>>2)] = date.getFullYear()-1900;
+      HEAP32[(((tmPtr)+(24))>>2)] = date.getDay();
+  
+      var start = new Date(date.getFullYear(), 0, 1);
+      var yday = ((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24))|0;
+      HEAP32[(((tmPtr)+(28))>>2)] = yday;
+      HEAP32[(((tmPtr)+(36))>>2)] = -(date.getTimezoneOffset() * 60);
+  
+      // Attention: DST is in December in South, and some regions don't have DST at all.
+      var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
+      var winterOffset = start.getTimezoneOffset();
+      var dst = (summerOffset != winterOffset && date.getTimezoneOffset() == Math.min(winterOffset, summerOffset))|0;
+      HEAP32[(((tmPtr)+(32))>>2)] = dst;
+  
+      var zonePtr = HEAP32[(((__get_tzname())+(dst ? 4 : 0))>>2)];
+      HEAP32[(((tmPtr)+(40))>>2)] = zonePtr;
+  
+      return tmPtr;
+    }
+  function ___localtime_r(a0,a1
+  ) {
+  return _localtime_r(a0,a1);
+  }
+
   function _abort() {
       abort('native code called abort()');
     }
@@ -3017,6 +3093,10 @@ var ASM_CONSTS = {
       GLctx.currentProgram = program;
     }
 
+  function _glVertexAttribDivisor(index, divisor) {
+      GLctx['vertexAttribDivisor'](index, divisor);
+    }
+
   function _glVertexAttribPointer(index, size, type, normalized, stride, ptr) {
       var cb = GL.currentContext.clientBuffers[index];
       if (!GLctx.currentArrayBufferBinding) {
@@ -3083,6 +3163,7 @@ function intArrayToString(array) {
 
 
 var asmLibraryArg = {
+  "__localtime_r": ___localtime_r,
   "abort": _abort,
   "emscripten_get_element_css_size": _emscripten_get_element_css_size,
   "emscripten_memcpy_big": _emscripten_memcpy_big,
@@ -3130,6 +3211,7 @@ var asmLibraryArg = {
   "glShaderSource": _glShaderSource,
   "glUniformMatrix4fv": _glUniformMatrix4fv,
   "glUseProgram": _glUseProgram,
+  "glVertexAttribDivisor": _glVertexAttribDivisor,
   "glVertexAttribPointer": _glVertexAttribPointer,
   "setTempRet0": _setTempRet0,
   "time": _time
@@ -3142,12 +3224,27 @@ var ___wasm_call_ctors = Module["___wasm_call_ctors"] = createExportWrapper("__w
 var _main = Module["_main"] = createExportWrapper("main");
 
 /** @type {function(...*):?} */
+var _free = Module["_free"] = createExportWrapper("free");
+
+/** @type {function(...*):?} */
+var _malloc = Module["_malloc"] = createExportWrapper("malloc");
+
+/** @type {function(...*):?} */
 var ___errno_location = Module["___errno_location"] = createExportWrapper("__errno_location");
 
 /** @type {function(...*):?} */
 var _fflush = Module["_fflush"] = createExportWrapper("fflush");
 
 /** @type {function(...*):?} */
+var __get_tzname = Module["__get_tzname"] = createExportWrapper("_get_tzname");
+
+/** @type {function(...*):?} */
+var __get_daylight = Module["__get_daylight"] = createExportWrapper("_get_daylight");
+
+/** @type {function(...*):?} */
+var __get_timezone = Module["__get_timezone"] = createExportWrapper("_get_timezone");
+
+/** @type {function(...*):?} */
 var stackSave = Module["stackSave"] = createExportWrapper("stackSave");
 
 /** @type {function(...*):?} */
@@ -3172,12 +3269,6 @@ var _emscripten_stack_get_end = Module["_emscripten_stack_get_end"] = function()
 };
 
 /** @type {function(...*):?} */
-var _malloc = Module["_malloc"] = createExportWrapper("malloc");
-
-/** @type {function(...*):?} */
-var _free = Module["_free"] = createExportWrapper("free");
-
-/** @type {function(...*):?} */
 var dynCall_jiji = Module["dynCall_jiji"] = createExportWrapper("dynCall_jiji");
 
 
diff --git a/themes/dist/output.wasm b/themes/dist/output.wasm
index 495ea67..427f834 100755
--- a/themes/dist/output.wasm
+++ b/themes/dist/output.wasm