From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 config/make-windows-h-wrapper.py | 94 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 config/make-windows-h-wrapper.py

(limited to 'config/make-windows-h-wrapper.py')

diff --git a/config/make-windows-h-wrapper.py b/config/make-windows-h-wrapper.py
new file mode 100644
index 0000000000..91d335ba42
--- /dev/null
+++ b/config/make-windows-h-wrapper.py
@@ -0,0 +1,94 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import re
+import string
+import textwrap
+
+comment_re = re.compile(r"//[^\n]*\n|/\*.*\*/", re.S)
+decl_re = re.compile(
+    r"""^(.+)\s+        # type
+                         (\w+)\s*        # name
+                         (?:\((.*)\))?$  # optional param tys
+                         """,
+    re.X | re.S,
+)
+
+
+def read_decls(filename):
+    """Parse & yield C-style decls from an input file"""
+    with open(filename, "r") as fd:
+        # Strip comments from the source text.
+        text = comment_re.sub("", fd.read())
+
+        # Parse individual declarations.
+        raw_decls = [d.strip() for d in text.split(";") if d.strip()]
+        for raw in raw_decls:
+            match = decl_re.match(raw)
+            if match is None:
+                raise "Invalid decl: %s" % raw
+
+            ty, name, params = match.groups()
+            if params is not None:
+                params = [a.strip() for a in params.split(",") if a.strip()]
+            yield ty, name, params
+
+
+def generate(fd, consts_path, unicodes_path, template_path, compiler):
+    # Parse the template
+    with open(template_path, "r") as template_fd:
+        template = string.Template(template_fd.read())
+
+    decls = ""
+
+    # Each constant should be saved to a temporary, and then re-assigned to a
+    # constant with the correct name, allowing the value to be determined by
+    # the actual definition.
+    for ty, name, args in read_decls(consts_path):
+        assert args is None, "parameters in const decl!"
+
+        decls += textwrap.dedent(
+            """
+            #ifdef {name}
+            constexpr {ty} _tmp_{name} = {name};
+            #undef {name}
+            constexpr {ty} {name} = _tmp_{name};
+            #endif
+            """.format(
+                ty=ty, name=name
+            )
+        )
+
+    # Each unicode declaration defines a static inline function with the
+    # correct types which calls the 'A' or 'W'-suffixed versions of the
+    # function. Full types are required here to ensure that '0' to 'nullptr'
+    # coersions are preserved.
+    for ty, name, args in read_decls(unicodes_path):
+        assert args is not None, "argument list required for unicode decl"
+
+        # Parameter & argument string list
+        params = ", ".join("%s a%d" % (ty, i) for i, ty in enumerate(args))
+        args = ", ".join("a%d" % i for i in range(len(args)))
+
+        decls += textwrap.dedent(
+            """
+            #ifdef {name}
+            #undef {name}
+            static inline {ty} WINAPI
+            {name}({params})
+            #ifdef UNICODE
+            {{
+              return {name}W({args});
+            }}
+            #else
+            = delete;
+            #endif
+            #endif
+            """.format(
+                ty=ty, name=name, params=params, args=args
+            )
+        )
+
+    # Write out the resulting file
+    fd.write(template.substitute(decls=decls))
-- 
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