SPDX-FileCopyrightText: 2022 Samuel Tyler <samuel@samuelt.me>

SPDX-License-Identifier: Python-2.0.1

unicodetype_db.h is a file that needs to be regened, but it not
particularly trivial to regen. For the first build of Python,
strip out any kind of unicode support that requires
unicodetype_db.h indiscriminately.

We are effectively restricted to ASCII characters with this change,
but it works.

--- Python-2.0.1/Objects/unicodectype.c	2000-09-26 08:48:13.000000000 +1100
+++ Python-2.0.1/Objects/unicodectype.c	2022-10-03 21:09:02.108869321 +1100
@@ -29,30 +29,12 @@
     const unsigned char digit;
 } _PyUnicode_TypeRecord;
 
-#include "unicodetype_db.h"
-
-static const _PyUnicode_TypeRecord *
-gettyperecord(int code)
-{
-    int index;
-
-    if (code < 0 || code >= 65536)
-        index = 0;
-    else {
-        index = index1[(code>>SHIFT)];
-        index = index2[(index<<SHIFT)+(code&((1<<SHIFT)-1))];
-    }
-    return &_PyUnicode_TypeRecords[index];
-}
-
 /* Returns 1 for Unicode characters having the category 'Zl' or type
    'B', 0 otherwise. */
 
 int _PyUnicode_IsLinebreak(register const Py_UNICODE ch)
 {
-    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
-
-    return (ctype->flags & LINEBREAK_MASK) != 0;
+    return 0;
 }
 
 /* Returns the titlecase Unicode characters corresponding to ch or just
@@ -60,12 +44,7 @@
 
 Py_UNICODE _PyUnicode_ToTitlecase(register const Py_UNICODE ch)
 {
-    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
-
-    if (ctype->title)
-        return ch + ctype->title;
-
-    return ch + ctype->upper;
+    return ch;
 }
 
 /* Returns 1 for Unicode characters having the category 'Lt', 0
@@ -73,9 +52,7 @@
 
 int _PyUnicode_IsTitlecase(register const Py_UNICODE ch)
 {
-    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
-
-    return (ctype->flags & TITLE_MASK) != 0;
+    return 0;
 }
 
 /* Returns the integer decimal (0-9) for Unicode characters having
@@ -83,15 +60,13 @@
 
 int _PyUnicode_ToDecimalDigit(register const Py_UNICODE ch)
 {
-    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
-
-    return (ctype->flags & DECIMAL_MASK) ? ctype->decimal : -1;
+    return -1;
 }
 
 int _PyUnicode_IsDecimalDigit(register const Py_UNICODE ch)
 {
     if (_PyUnicode_ToDecimalDigit(ch) < 0)
-	return 0;
+    return 0;
     return 1;
 }
 
@@ -100,15 +75,13 @@
 
 int _PyUnicode_ToDigit(register const Py_UNICODE ch)
 {
-    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
-
-    return (ctype->flags & DIGIT_MASK) ? ctype->digit : -1;
+    return -1;
 }
 
 int _PyUnicode_IsDigit(register const Py_UNICODE ch)
 {
     if (_PyUnicode_ToDigit(ch) < 0)
-	return 0;
+    return 0;
     return 1;
 }
 
