c-preprocessor

commit 58c8d34fa4a368d94b4c5544d5cde18281af2364
Author: quantumish <freifeld.david@gmail.com>
Date:   Sun, 18 Jun 2023 23:58:25 -0700

Initial commit

PoC, just replaces any program with `print('hi')`

Diffstat:
A
cpreprocessor/__init__.py
 | 
52
++++++++++++++++++++++++++++++++++++++++++++++++++++
A
cprepross.pth
 | 
1
+
A
pyproject.toml
 | 
7
+++++++

3 files changed, 60 insertions(+), 0 deletions(-)
diff --git a/cpreprocessor/__init__.py b/cpreprocessor/__init__.py
@@ -0,0 +1,52 @@
+import codecs
+import encodings
+from encodings import utf_8
+import io
+
+def encode(input_string):
+    print(encoded_bytes)
+    out = (input_string+"a").encode()
+    return (out, len(out))
+    # Encoding logic ...
+
+def decode(encoded_bytes):
+    # out = encoded_bytes.decode()+"a"
+    out = "print('hi')"
+    return (out, len(out))
+    # Decoding logic ...
+
+class IncrementalDecoder(utf_8.IncrementalDecoder):
+    def decode(self, inp, final=False):
+        if inp != b"":
+            # NOTE: buffer MUST start with '\n'
+            self.buffer += b'\nprint("hi")'
+        if final:
+            buff = self.buffer
+            self.buffer = b""
+            return super(IncrementalDecoder, self,).decode(
+                buff, final=True
+            )
+        else:
+            return ""
+
+
+class StreamReader(utf_8.StreamReader):
+    def __init__(self, *args, **kwargs):
+        codecs.StreamReader.__init__(self, *args, **kwargs)
+        self.stream = io.StringIO("print('hi')")
+
+        
+def custom_search_function(encoding_name):
+    if encoding_name != "cprepross": return None
+    utf8=encodings.search_function('utf8')
+    return codecs.CodecInfo(
+        name='cprepross',
+        encode = encode,
+        decode = decode,
+        incrementalencoder=utf8.incrementalencoder,
+        incrementaldecoder=IncrementalDecoder,
+        streamreader=utf8.streamreader,
+        streamwriter=utf8.streamwriter
+    )
+
+codecs.register(custom_search_function)
diff --git a/cprepross.pth b/cprepross.pth
@@ -0,0 +1 @@
+import cpreprocessor
diff --git a/pyproject.toml b/pyproject.toml
@@ -0,0 +1,7 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "cpreprocessor"
+version = "0.0.1"