Add os.environ (via posix.environ)

src/runtime/builtin_modules/posix.cpp

@@ -57,8 +57,33 @@ static Box* posix_getuid() {
     return boxInt(getuid());
 }
 
+extern "C" {
+extern char** environ;
+}
+
+static Box* convertEnviron() {
+    assert(environ);
+
+    BoxedDict* d = new BoxedDict();
+    // Ported from CPython:
+    for (char** e = environ; *e != NULL; e++) {
+        char* p = strchr(*e, '=');
+        if (p == NULL)
+            continue;
+        Box* k = PyString_FromStringAndSize(*e, (int)(p - *e));
+        Box* v = PyString_FromString(p + 1);
+
+        Box*& cur_v = d->d[k];
+        if (cur_v == NULL)
+            cur_v = v;
+    }
+    return d;
+}
+
 } // namespace posix
 
+using namespace posix;
+
 void setupPosix() {
     posix_module = createModule("posix", "__builtin__");
 
@@ -66,6 +91,7 @@ void setupPosix() {
     posix_module->giveAttr("getuid", new BoxedFunction(boxRTFunction((void*)posix::posix_getuid, BOXED_INT, 0)));
 
     posix_module->giveAttr("error", OSError);
+    posix_module->giveAttr("environ", convertEnviron());
 }
 }
 

test/tests/pwd_test.py

-# expected: fail
-# - wip
+# allow-warning: converting unicode literal to str
 
 import pwd
 import os