SCons: Drop support for Python 2

We now require SCons 3.0+ (first version with Python 3 support),
and we set min required Python 3 version to 3.5 (3.4 and earlier are
EOL).

SConstruct

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
-EnsureSConsVersion(0, 98, 1)
+EnsureSConsVersion(3, 0, 0)
+EnsurePythonVersion(3, 5)
 
 # System
 import glob
@@ -13,7 +14,7 @@ import methods
 import gles_builders
 from platform_methods import run_in_subprocess
 
-# scan possible build platforms
+# Scan possible build platforms
 
 platform_list = []  # list of platforms
 platform_opts = {}  # options for each platform

core/core_builders.py

@@ -4,15 +4,33 @@
 """
 
 from platform_methods import subprocess_main
-from compat import iteritems, itervalues, open_utf8, escape_string, byte_to_str
 
 
-def make_certs_header(target, source, env):
+def escape_string(s):
+    def charcode_to_c_escapes(c):
+        rev_result = []
+        while c >= 256:
+            c, low = (c // 256, c % 256)
+            rev_result.append('\\%03o' % low)
+        rev_result.append('\\%03o' % c)
+        return ''.join(reversed(rev_result))
+
+    result = ''
+    if isinstance(s, str):
+        s = s.encode('utf-8')
+    for c in s:
+        if not(32 <= c < 127) or c in (ord('\\'), ord('"')):
+            result += charcode_to_c_escapes(c)
+        else:
+            result += chr(c)
+    return result
 
+
+def make_certs_header(target, source, env):
     src = source[0]
     dst = target[0]
     f = open(src, "rb")
-    g = open_utf8(dst, "w")
+    g = open(dst, "w", encoding="utf-8")
     buf = f.read()
     decomp_size = len(buf)
     import zlib
@@ -32,7 +50,7 @@ def make_certs_header(target, source, env):
         g.write("static const int _certs_uncompressed_size = " + str(decomp_size) + ";\n")
         g.write("static const unsigned char _certs_compressed[] = {\n")
         for i in range(len(buf)):
-            g.write("\t" + byte_to_str(buf[i]) + ",\n")
+            g.write("\t" + str(buf[i]) + ",\n")
         g.write("};\n")
     g.write("#endif // CERTS_COMPRESSED_GEN_H")
 
@@ -46,8 +64,8 @@ def make_authors_header(target, source, env):
 
     src = source[0]
     dst = target[0]
-    f = open_utf8(src, "r")
-    g = open_utf8(dst, "w")
+    f = open(src, "r", encoding="utf-8")
+    g = open(dst, "w", encoding="utf-8")
 
     g.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
     g.write("#ifndef AUTHORS_GEN_H\n")
@@ -92,8 +110,8 @@ def make_donors_header(target, source, env):
 
     src = source[0]
     dst = target[0]
-    f = open_utf8(src, "r")
-    g = open_utf8(dst, "w")
+    f = open(src, "r", encoding="utf-8")
+    g = open(dst, "w", encoding="utf-8")
 
     g.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
     g.write("#ifndef DONORS_GEN_H\n")
@@ -163,7 +181,7 @@ def next_tag(self):
     projects = OrderedDict()
     license_list = []
 
-    with open_utf8(src_copyright, "r") as copyright_file:
+    with open(src_copyright, "r", encoding="utf-8") as copyright_file:
         reader = LicenseReader(copyright_file)
         part = {}
         while reader.current:
@@ -183,21 +201,21 @@ def next_tag(self):
                 reader.next_line()
 
     data_list = []
-    for project in itervalues(projects):
+    for project in iter(projects.values()):
         for part in project:
             part["file_index"] = len(data_list)
             data_list += part["Files"]
             part["copyright_index"] = len(data_list)
             data_list += part["Copyright"]
 
-    with open_utf8(dst, "w") as f:
+    with open(dst, "w", encoding="utf-8") as f:
 
         f.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
         f.write("#ifndef LICENSE_GEN_H\n")
         f.write("#define LICENSE_GEN_H\n")
         f.write("const char *const GODOT_LICENSE_TEXT =")
 
-        with open_utf8(src_license, "r") as license_file:
+        with open(src_license, "r", encoding="utf-8") as license_file:
             for line in license_file:
                 escaped_string = escape_string(line.strip())
                 f.write("\n\t\t\"" + escaped_string + "\\n\"")
@@ -225,7 +243,7 @@ def next_tag(self):
         f.write("const ComponentCopyrightPart COPYRIGHT_PROJECT_PARTS[] = {\n")
         part_index = 0
         part_indexes = {}
-        for project_name, project in iteritems(projects):
+        for project_name, project in iter(projects.items()):
             part_indexes[project_name] = part_index
             for part in project:
                 f.write("\t{ \"" + escape_string(part["License"][0]) + "\", "
@@ -239,7 +257,7 @@ def next_tag(self):
         f.write("const int COPYRIGHT_INFO_COUNT = " + str(len(projects)) + ";\n")
 
         f.write("const ComponentCopyright COPYRIGHT_INFO[] = {\n")
-        for project_name, project in iteritems(projects):
+        for project_name, project in iter(projects.items()):
             f.write("\t{ \"" + escape_string(project_name) + "\", "
                     + "&COPYRIGHT_PROJECT_PARTS[" + str(part_indexes[project_name]) + "], "
                     + str(len(project)) + " },\n")

doc/Makefile

@@ -13,13 +13,6 @@ doxygen:
 	mkdir -p $(OUTPUTDIR)/doxygen
 	doxygen Doxyfile
 
-markdown:
-	rm -rf $(OUTPUTDIR)/markdown
-	mkdir -p $(OUTPUTDIR)/markdown
-	pushd $(OUTPUTDIR)/markdown
-	python2 $(TOOLSDIR)/makemd.py $(CLASSES)
-	popd
-
 rst:
 	rm -rf $(OUTPUTDIR)/rst
 	mkdir -p $(OUTPUTDIR)/rst

editor/SCsub

@@ -7,13 +7,12 @@ env.editor_sources = []
 import os
 import os.path
 from platform_methods import run_in_subprocess
-from compat import open_utf8
 import editor_builders
 
 
 def _make_doc_data_class_path(to_path):
     # NOTE: It is safe to generate this file here, since this is still executed serially
-    g = open_utf8(os.path.join(to_path, "doc_data_class_path.gen.h"), "w")
+    g = open(os.path.join(to_path, "doc_data_class_path.gen.h"), "w", encoding="utf-8")
     g.write("static const int _doc_data_class_path_count = " + str(len(env.doc_class_path)) + ";\n")
     g.write("struct _DocDataClassPath { const char* name; const char* path; };\n")
 
@@ -37,7 +36,7 @@ if env['tools']:
     reg_exporters += '}\n'
 
     # NOTE: It is safe to generate this file here, since this is still executed serially
-    with open_utf8("register_exporters.gen.cpp", "w") as f:
+    with open("register_exporters.gen.cpp", "w", encoding="utf-8") as f:
         f.write(reg_exporters_inc)
         f.write(reg_exporters)
 

editor/editor_builders.py

@@ -6,24 +6,23 @@
 import os
 import os.path
 from platform_methods import subprocess_main
-from compat import encode_utf8, byte_to_str, open_utf8
 
 
 def make_doc_header(target, source, env):
 
     dst = target[0]
-    g = open_utf8(dst, "w")
+    g = open(dst, "w", encoding="utf-8")
     buf = ""
     docbegin = ""
     docend = ""
     for src in source:
         if not src.endswith(".xml"):
             continue
-        with open_utf8(src, "r") as f:
+        with open(src, "r", encoding="utf-8") as f:
             content = f.read()
         buf += content
 
-    buf = encode_utf8(docbegin + buf + docend)
+    buf = (docbegin + buf + docend).encode("utf-8")
     decomp_size = len(buf)
     import zlib
     buf = zlib.compress(buf)
@@ -35,7 +34,7 @@ def make_doc_header(target, source, env):
     g.write("static const int _doc_data_uncompressed_size = " + str(decomp_size) + ";\n")
     g.write("static const unsigned char _doc_data_compressed[] = {\n")
     for i in range(len(buf)):
-        g.write("\t" + byte_to_str(buf[i]) + ",\n")
+        g.write("\t" + str(buf[i]) + ",\n")
     g.write("};\n")
 
     g.write("#endif")
@@ -47,7 +46,7 @@ def make_fonts_header(target, source, env):
 
     dst = target[0]
 
-    g = open_utf8(dst, "w")
+    g = open(dst, "w", encoding="utf-8")
 
     g.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
     g.write("#ifndef _EDITOR_FONTS_H\n")
@@ -64,7 +63,7 @@ def make_fonts_header(target, source, env):
         g.write("static const int _font_" + name + "_size = " + str(len(buf)) + ";\n")
         g.write("static const unsigned char _font_" + name + "[] = {\n")
         for j in range(len(buf)):
-            g.write("\t" + byte_to_str(buf[j]) + ",\n")
+            g.write("\t" + str(buf[j]) + ",\n")
 
         g.write("};\n")
 
@@ -77,7 +76,7 @@ def make_translations_header(target, source, env, category):
 
     dst = target[0]
 
-    g = open_utf8(dst, "w")
+    g = open(dst, "w", encoding="utf-8")
 
     g.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
     g.write("#ifndef _{}_TRANSLATIONS_H\n".format(category.upper()))
@@ -98,7 +97,7 @@ def make_translations_header(target, source, env, category):
 
         g.write("static const unsigned char _{}_translation_{}_compressed[] = {{\n".format(category, name))
         for j in range(len(buf)):
-            g.write("\t" + byte_to_str(buf[j]) + ",\n")
+            g.write("\t" + str(buf[j]) + ",\n")
 
         g.write("};\n")
 

editor/icons/editor_icons_builders.py

@@ -3,9 +3,10 @@
 All such functions are invoked in a subprocess on Windows to prevent build flakiness.
 
 """
+
 import os
+from io import StringIO
 from platform_methods import subprocess_main
-from compat import StringIO
 
 
 def make_editor_icons_action(target, source, env):

main/main_builders.py

@@ -4,7 +4,6 @@
 
 """
 from platform_methods import subprocess_main
-from compat import byte_to_str
 from collections import OrderedDict
 
 
@@ -22,7 +21,7 @@ def make_splash(target, source, env):
         g.write('static const Color boot_splash_bg_color = Color(0.14, 0.14, 0.14);\n')
         g.write("static const unsigned char boot_splash_png[] = {\n")
         for i in range(len(buf)):
-            g.write(byte_to_str(buf[i]) + ",\n")
+            g.write(str(buf[i]) + ",\n")
         g.write("};\n")
         g.write("#endif")
 
@@ -41,7 +40,7 @@ def make_splash_editor(target, source, env):
         g.write('static const Color boot_splash_editor_bg_color = Color(0.14, 0.14, 0.14);\n')
         g.write("static const unsigned char boot_splash_editor_png[] = {\n")
         for i in range(len(buf)):
-            g.write(byte_to_str(buf[i]) + ",\n")
+            g.write(str(buf[i]) + ",\n")
         g.write("};\n")
         g.write("#endif")
 
@@ -59,7 +58,7 @@ def make_app_icon(target, source, env):
         g.write("#define APP_ICON_H\n")
         g.write("static const unsigned char app_icon_png[] = {\n")
         for i in range(len(buf)):
-            g.write(byte_to_str(buf[i]) + ",\n")
+            g.write(str(buf[i]) + ",\n")
         g.write("};\n")
         g.write("#endif")