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detect the size of wchar_t (aka Runtime.UCS) at runtime using PyUnico… · pythonnet/pythonnet@67c6d11 · GitHub

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Commit 67c6d11

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lostmsu
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detect the size of wchar_t (aka Runtime.UCS) at runtime using PyUnicode_GetMax
1 parent 182faed commit 67c6d11

6 files changed

Lines changed: 29 additions & 62 deletions

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‎.editorconfig‎

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@@ -34,6 +34,10 @@ csharp_new_line_before_finally = true
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[*.sln]
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indent_style = tab
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[*.csproj]
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charset = utf-8
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insert_final_newline = true
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# bumpversion reformats itself after every bump
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[.bumpversion.cfg]
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trim_trailing_whitespace = false

‎CHANGELOG.md‎

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@@ -13,6 +13,7 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
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### Changed
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- Drop support for Python 2, 3.4, and 3.5
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- `wchar_t` size aka `Runtime.UCS` is now determined at runtime
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- `clr.AddReference` may now throw errors besides `FileNotFoundException`, that provide more
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details about the cause of the failure
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- `clr.AddReference` no longer adds ".dll" implicitly

‎setup.py‎

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@@ -251,14 +251,8 @@ def build_extension(self, ext):
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if not os.path.exists(dest_dir):
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os.makedirs(dest_dir)
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# Up to Python 3.2 sys.maxunicode is used to determine the size of
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# Py_UNICODE, but from 3.3 onwards Py_UNICODE is a typedef of wchar_t.
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import ctypes
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unicode_width = ctypes.sizeof(ctypes.c_wchar)
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defines = [
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"PYTHON{0}{1}".format(PY_MAJOR, PY_MINOR),
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"UCS{0}".format(unicode_width),
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]
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if CONFIG == "Debug":

‎src/runtime/Python.Runtime.15.csproj‎

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@@ -49,9 +49,8 @@
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<Python3Version>$(PYTHONNET_PY3_VERSION)</Python3Version>
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<Python3Version Condition="'$(Python3Version)'==''">PYTHON38</Python3Version>
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<PythonWinDefineConstants>$(PYTHONNET_WIN_DEFINE_CONSTANTS)</PythonWinDefineConstants>
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<PythonWinDefineConstants Condition="'$(PythonWinDefineConstants)'==''">UCS2</PythonWinDefineConstants>
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<PythonMonoDefineConstants>$(PYTHONNET_MONO_DEFINE_CONSTANTS)</PythonMonoDefineConstants>
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<PythonMonoDefineConstants Condition="'$(PythonMonoDefineConstants)'==''">UCS4;MONO_LINUX;PYTHON_WITH_PYMALLOC</PythonMonoDefineConstants>
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<PythonMonoDefineConstants Condition="'$(PythonMonoDefineConstants)'==''">MONO_LINUX;PYTHON_WITH_PYMALLOC</PythonMonoDefineConstants>
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<PythonInteropFile Condition="'$(PythonInteropFile)'==''">$(PYTHONNET_INTEROP_FILE)</PythonInteropFile>
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</PropertyGroup>
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<PropertyGroup Condition="$(Configuration.Contains('Debug')) AND '$(TargetFramework)'=='net40'">
@@ -143,20 +142,20 @@
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<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
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</ItemGroup>
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<ItemGroup>
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<None Update="intern_.tt">
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<Generator>TextTemplatingFileGenerator</Generator>
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<LastGenOutput>intern_.cs</LastGenOutput>
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</None>
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<ItemGroup>
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<None Update="intern_.tt">
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<Generator>TextTemplatingFileGenerator</Generator>
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<LastGenOutput>intern_.cs</LastGenOutput>
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</None>
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</ItemGroup>
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<ItemGroup>
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<Compile Update="intern_.cs">
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<DesignTime>True</DesignTime>
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<AutoGen>True</AutoGen>
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<DependentUpon>intern_.tt</DependentUpon>
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</Compile>
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<ItemGroup>
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<Compile Update="intern_.cs">
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<DesignTime>True</DesignTime>
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<AutoGen>True</AutoGen>
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<DependentUpon>intern_.tt</DependentUpon>
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</Compile>
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</ItemGroup>
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<Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />

‎src/runtime/Python.Runtime.csproj‎

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@@ -29,46 +29,46 @@
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<PlatformTarget>x64</PlatformTarget>
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</PropertyGroup>-->
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<PropertyGroup Condition=" '$(Configuration)' == 'ReleaseMono'">
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27;UCS4</DefineConstants>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27</DefineConstants>
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<Optimize>true</Optimize>
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<DebugType>pdbonly</DebugType>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)' == 'ReleaseMonoPY3'">
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38;UCS4</DefineConstants>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38</DefineConstants>
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<Optimize>true</Optimize>
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<DebugType>pdbonly</DebugType>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)' == 'DebugMono'">
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<DebugSymbols>true</DebugSymbols>
43-
<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27;UCS4;TRACE;DEBUG</DefineConstants>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27;TRACE;DEBUG</DefineConstants>
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<Optimize>false</Optimize>
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<DebugType>full</DebugType>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)' == 'DebugMonoPY3'">
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<DebugSymbols>true</DebugSymbols>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38;UCS4;TRACE;DEBUG</DefineConstants>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38;TRACE;DEBUG</DefineConstants>
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<Optimize>false</Optimize>
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<DebugType>full</DebugType>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)' == 'ReleaseWin'">
54-
<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27;UCS2</DefineConstants>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27</DefineConstants>
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<Optimize>true</Optimize>
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<DebugType>pdbonly</DebugType>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)' == 'ReleaseWinPY3'">
59-
<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38;UCS2</DefineConstants>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38</DefineConstants>
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<Optimize>true</Optimize>
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<DebugType>pdbonly</DebugType>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)' == 'DebugWin'">
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<DebugSymbols>true</DebugSymbols>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27;UCS2;TRACE;DEBUG</DefineConstants>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON2;PYTHON27;TRACE;DEBUG</DefineConstants>
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<Optimize>false</Optimize>
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<DebugType>full</DebugType>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)' == 'DebugWinPY3'">
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<DebugSymbols>true</DebugSymbols>
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<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38;UCS2;TRACE;DEBUG</DefineConstants>
71+
<DefineConstants Condition="'$(DefineConstants)' == ''">PYTHON3;PYTHON38;TRACE;DEBUG</DefineConstants>
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<Optimize>false</Optimize>
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<DebugType>full</DebugType>
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</PropertyGroup>

‎src/runtime/runtime.cs‎

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@@ -18,31 +18,8 @@ namespace Python.Runtime
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/// </summary>
1919
public class Runtime
2020
{
21-
// C# compiler copies constants to the assemblies that references this library.
22-
// We needs to replace all public constants to static readonly fields to allow
23-
// binary substitution of different Python.Runtime.dll builds in a target application.
24-
2521
public static int UCS => _UCS;
26-
27-
#if UCS4
28-
internal const int _UCS = 4;
29-
30-
/// <summary>
31-
/// EntryPoint to be used in DllImport to map to correct Unicode
32-
/// methods prior to PEP393. Only used for PY27.
33-
/// </summary>
34-
private const string PyUnicodeEntryPoint = "PyUnicodeUCS4_";
35-
#elif UCS2
36-
internal const int _UCS = 2;
37-
38-
/// <summary>
39-
/// EntryPoint to be used in DllImport to map to correct Unicode
40-
/// methods prior to PEP393. Only used for PY27.
41-
/// </summary>
42-
private const string PyUnicodeEntryPoint = "PyUnicodeUCS2_";
43-
#else
44-
#error You must define either UCS2 or UCS4!
45-
#endif
22+
internal static readonly int _UCS = PyUnicode_GetMax() <= 0xFFFF ? 2 : 4;
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4724
#if PYTHON36
4825
const string _minor = "6";
@@ -1537,17 +1514,6 @@ internal static IntPtr PyBytes_AS_STRING(IntPtr ob)
15371514
return ob + BytesOffset.ob_sval;
15381515
}
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1540-
internal static IntPtr PyString_FromStringAndSize(string value, long size)
1541-
{
1542-
return _PyString_FromStringAndSize(value, new IntPtr(size));
1543-
}
1544-
1545-
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
1546-
EntryPoint = "PyUnicode_FromStringAndSize")]
1547-
internal static extern IntPtr _PyString_FromStringAndSize(
1548-
[MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Utf8Marshaler))] string value,
1549-
IntPtr size
1550-
);
15511517

15521518
internal static IntPtr PyUnicode_FromStringAndSize(IntPtr value, long size)
15531519
{
@@ -1588,6 +1554,9 @@ internal static IntPtr PyUnicode_FromUnicode(string s, long size)
15881554
return PyUnicode_FromKindAndData(_UCS, s, size);
15891555
}
15901556

1557+
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
1558+
internal static extern int PyUnicode_GetMax();
1559+
15911560
internal static long PyUnicode_GetSize(IntPtr ob)
15921561
{
15931562
return (long)_PyUnicode_GetSize(ob);

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