Update to SDL3

1 files changed, 254 insertions, 0 deletions

diff --git a/src/contrib/SDL-3.2.20/build-scripts/rename_api.py b/src/contrib/SDL-3.2.20/build-scripts/rename_api.py
new file mode 100755
index 0000000..605ffa0
--- /dev/null
+++ b/src/contrib/SDL-3.2.20/build-scripts/rename_api.py
@@ -0,0 +1,254 @@
+#!/usr/bin/env python3
+#
+# This script renames symbols in the API, updating SDL_oldnames.h and
+# adding documentation for the change.
+
+import argparse
+import os
+import pathlib
+import pprint
+import re
+import sys
+from rename_symbols import create_regex_from_replacements, replace_symbols_in_path
+
+SDL_ROOT = pathlib.Path(__file__).resolve().parents[1]
+
+SDL_INCLUDE_DIR = SDL_ROOT / "include/SDL3"
+SDL_BUILD_SCRIPTS = SDL_ROOT / "build-scripts"
+
+
+def main():
+    if len(args.args) == 0 or (len(args.args) % 2) != 0:
+        print("Usage: %s [-h] [--skip-header-check] header {enum,function,hint,structure,symbol} [old new ...]" % sys.argv[0])
+        exit(1)
+
+    # Check whether we can still modify the ABI
+    version_header = pathlib.Path( SDL_INCLUDE_DIR / "SDL_version.h" ).read_text()
+    if not re.search(r"SDL_MINOR_VERSION\s+[01]\s", version_header):
+        raise Exception("ABI is frozen, symbols cannot be renamed")
+
+    # Find the symbol in the headers
+    if pathlib.Path(args.header).is_file():
+        header = pathlib.Path(args.header)
+    else:
+        header = pathlib.Path(SDL_INCLUDE_DIR / args.header)
+
+    if not header.exists():
+        raise Exception("Couldn't find header %s" % header)
+
+    header_name = header.name
+    if (header.name == "SDL_gamepad.h"):
+        header_name = "SDL_gamecontroller.h"
+
+    header_text = header.read_text()
+
+    # Replace the symbols in source code
+    replacements = {}
+    i = 0
+    while i < len(args.args):
+        oldname = args.args[i + 0]
+        newname = args.args[i + 1]
+
+        if not args.skip_header_check and not re.search((r"\b%s\b" % oldname), header_text):
+            raise Exception("Couldn't find %s in %s" % (oldname, header))
+
+        replacements[ oldname ] = newname
+        replacements[ oldname + "_REAL" ] = newname + "_REAL"
+        i += 2
+
+    regex = create_regex_from_replacements(replacements)
+    for dir in ["src", "test", "examples", "include", "docs", "cmake/test"]:
+        replace_symbols_in_path(SDL_ROOT / dir, regex, replacements)
+
+    # Replace the symbols in documentation
+    i = 0
+    while i < len(args.args):
+        oldname = args.args[i + 0]
+        newname = args.args[i + 1]
+
+        add_symbol_to_oldnames(header_name, oldname, newname)
+        add_symbol_to_migration(header_name, args.type, oldname, newname)
+        add_symbol_to_coccinelle(args.type, oldname, newname)
+        i += 2
+
+
+def add_line(lines, i, section):
+    lines.insert(i, section)
+    i += 1
+    return i
+
+
+def add_content(lines, i, content, add_trailing_line):
+    if lines[i - 1] == "":
+        lines[i - 1] = content
+    else:
+        i = add_line(lines, i, content)
+
+    if add_trailing_line:
+        i = add_line(lines, i, "")
+    return i
+
+
+def add_symbol_to_coccinelle(symbol_type, oldname, newname):
+    file = open(SDL_BUILD_SCRIPTS / "SDL_migration.cocci", "a")
+    # Append-adds at last
+
+    if symbol_type == "function":
+        file.write("@@\n")
+        file.write("@@\n")
+        file.write("- %s\n" % oldname)
+        file.write("+ %s\n" % newname)
+        file.write("  (...)\n")
+
+    if symbol_type == "symbol":
+        file.write("@@\n")
+        file.write("@@\n")
+        file.write("- %s\n" % oldname)
+        file.write("+ %s\n" % newname)
+
+    # double check ?
+    if symbol_type == "hint":
+        file.write("@@\n")
+        file.write("@@\n")
+        file.write("- %s\n" % oldname)
+        file.write("+ %s\n" % newname)
+
+    if symbol_type == "enum" or symbol_type == "structure":
+        file.write("@@\n")
+        file.write("typedef %s, %s;\n" % (oldname, newname))
+        file.write("@@\n")
+        file.write("- %s\n" % oldname)
+        file.write("+ %s\n" % newname)
+
+    file.close()
+
+
+def add_symbol_to_oldnames(header, oldname, newname):
+    file = (SDL_INCLUDE_DIR / "SDL_oldnames.h")
+    lines = file.read_text().splitlines()
+    mode = 0
+    i = 0
+    while i < len(lines):
+        line = lines[i]
+        if line == "#ifdef SDL_ENABLE_OLD_NAMES":
+            if mode == 0:
+                mode = 1
+                section = ("/* ##%s */" % header)
+                section_added = False
+                content = ("#define %s %s" % (oldname, newname))
+                content_added = False
+            else:
+                raise Exception("add_symbol_to_oldnames(): expected mode 0")
+        elif line == "#elif !defined(SDL_DISABLE_OLD_NAMES)":
+            if mode == 1:
+                if not section_added:
+                    i = add_line(lines, i, section)
+
+                if not content_added:
+                    i = add_content(lines, i, content, True)
+
+                mode = 2
+                section = ("/* ##%s */" % header)
+                section_added = False
+                content = ("#define %s %s_renamed_%s" % (oldname, oldname, newname))
+                content_added = False
+            else:
+                raise Exception("add_symbol_to_oldnames(): expected mode 1")
+        elif line == "#endif /* SDL_ENABLE_OLD_NAMES */":
+            if mode == 2:
+                if not section_added:
+                    i = add_line(lines, i, section)
+
+                if not content_added:
+                    i = add_content(lines, i, content, True)
+
+                mode = 3
+            else:
+                raise Exception("add_symbol_to_oldnames(): expected mode 2")
+        elif line != "" and (mode == 1 or mode == 2):
+            if line.startswith("/* ##"):
+                if section_added:
+                    if not content_added:
+                        i = add_content(lines, i, content, True)
+                        content_added = True
+                elif line == section:
+                    section_added = True
+                elif section < line:
+                    i = add_line(lines, i, section)
+                    section_added = True
+                    i = add_content(lines, i, content, True)
+                    content_added = True
+            elif line != "" and section_added and not content_added:
+                if content == line:
+                    content_added = True
+                elif content < line:
+                    i = add_content(lines, i, content, False)
+                    content_added = True
+        i += 1
+
+    file.write_text("\n".join(lines) + "\n")
+
+
+def add_symbol_to_migration(header, symbol_type, oldname, newname):
+    file = (SDL_ROOT / "docs/README-migration.md")
+    lines = file.read_text().splitlines()
+    section = ("## %s" % header)
+    section_added = False
+    note = ("The following %ss have been renamed:" % symbol_type)
+    note_added = False
+    if symbol_type == "function":
+        content = ("* %s() => %s()" % (oldname, newname))
+    else:
+        content = ("* %s => %s" % (oldname, newname))
+    content_added = False
+    mode = 0
+    i = 0
+    while i < len(lines):
+        line = lines[i]
+        if line.startswith("##") and line.endswith(".h"):
+            if line == section:
+                section_added = True
+            elif section < line:
+                break
+
+        elif section_added and not note_added:
+            if note == line:
+                note_added = True
+        elif note_added and not content_added:
+            if content == line:
+                content_added = True
+            elif line == "" or content < line:
+                i = add_line(lines, i, content)
+                content_added = True
+        i += 1
+
+    if not section_added:
+        i = add_line(lines, i, section)
+        i = add_line(lines, i, "")
+
+    if not note_added:
+        i = add_line(lines, i, note)
+
+    if not content_added:
+        i = add_content(lines, i, content, True)
+
+    file.write_text("\n".join(lines) + "\n")
+
+
+if __name__ == "__main__":
+
+    parser = argparse.ArgumentParser(fromfile_prefix_chars='@')
+    parser.add_argument("--skip-header-check", action="store_true")
+    parser.add_argument("header")
+    parser.add_argument("type", choices=["enum", "function", "hint", "structure", "symbol"])
+    parser.add_argument("args", nargs="*")
+    args = parser.parse_args()
+
+    try:
+        main()
+    except Exception as e:
+        print(e)
+        exit(-1)
+
+    exit(0)
+