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[update] use modified JB #35

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Apr 30, 2024
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[update] use modified JB #35

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67 changes: 41 additions & 26 deletions build.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -3,14 +3,33 @@ const toolbox = @import ("toolbox");

const Paths = struct
{
cimgui: [] const u8 = undefined,
backends: [] const u8 = undefined,
// prefixed attributes
__cimgui: [] const u8 = undefined,
__backends: [] const u8 = undefined,

// mandatory getters
pub fn getCimgui (self: @This ()) [] const u8 { return self.__cimgui; }
pub fn getBackends (self: @This ()) [] const u8 { return self.__backends; }

// mandatory init
pub fn init (builder: *std.Build) !@This ()
{
var self = @This () {
.__cimgui = try builder.build_root.join (builder.allocator,
&.{ "cimgui", }),
};

self.__backends = try std.fs.path.join (builder.allocator,
&.{ self.getCimgui (), "backends", });

return self;
}
};

fn update (builder: *std.Build, path: *const Paths,
dependencies: *const toolbox.Dependencies) !void
{
std.fs.deleteTreeAbsolute (path.cimgui) catch |err|
std.fs.deleteTreeAbsolute (path.getCimgui ()) catch |err|
{
switch (err)
{
Expand All @@ -19,9 +38,9 @@ fn update (builder: *std.Build, path: *const Paths,
}
};

try dependencies.clone (builder, "imgui", path.cimgui);
try dependencies.clone (builder, "imgui", path.getCimgui ());

var cimgui_dir = try std.fs.openDirAbsolute (path.cimgui,
var cimgui_dir = try std.fs.openDirAbsolute (path.getCimgui (),
.{ .iterate = true, });
defer cimgui_dir.close ();

Expand All @@ -31,29 +50,29 @@ fn update (builder: *std.Build, path: *const Paths,
if (!std.mem.eql (u8, entry.name, "backends") and
!std.mem.startsWith (u8, entry.name, "im"))
try std.fs.deleteTreeAbsolute (try std.fs.path.join (builder.allocator,
&.{ path.cimgui, entry.name, }));
&.{ path.getCimgui (), entry.name, }));
}

var backends_dir = try std.fs.openDirAbsolute (path.backends,
var backends_dir = try std.fs.openDirAbsolute (path.getBackends (),
.{ .iterate = true, });
defer backends_dir.close ();

const binding_py = try builder.build_root.join (builder.allocator,
&.{ "dear_bindings", "dear_bindings.py", });
const imconfig_h = try std.fs.path.join (builder.allocator,
&.{ path.cimgui, "imconfig.h", });
&.{ path.getCimgui (), "imconfig.h", });
const imgui_h = try std.fs.path.join (builder.allocator,
&.{ path.cimgui, "imgui.h", });
&.{ path.getCimgui (), "imgui.h", });
const glfw_backend_h = try std.fs.path.join (builder.allocator,
&.{ path.backends, "imgui_impl_glfw.h", });
&.{ path.getBackends (), "imgui_impl_glfw.h", });
const vulkan_backend_h = try std.fs.path.join (builder.allocator, &.{
path.backends, "imgui_impl_vulkan.h", });
path.getBackends (), "imgui_impl_vulkan.h", });
const imgui_out = try std.fs.path.join (builder.allocator,
&.{ path.cimgui, "cimgui", });
&.{ path.getCimgui (), "cimgui", });
const glfw_out = try std.fs.path.join (builder.allocator,
&.{ path.backends, "cimgui_impl_glfw", });
&.{ path.getBackends (), "cimgui_impl_glfw", });
const vulkan_out = try std.fs.path.join (builder.allocator,
&.{ path.backends, "cimgui_impl_vulkan", });
&.{ path.getBackends (), "cimgui_impl_vulkan", });
try toolbox.run (builder, .{ .argv = &[_][] const u8 { "python3", binding_py,
"--output", imgui_out, imgui_h, }, });
try toolbox.run (builder, .{ .argv = &[_][] const u8 { "python3", binding_py,
Expand All @@ -76,10 +95,10 @@ fn update (builder: *std.Build, path: *const Paths,
(!toolbox.isCppSource (entry.name) and
!toolbox.isCHeader (entry.name)))
try std.fs.deleteFileAbsolute (try std.fs.path.join (
builder.allocator, &.{ path.backends, entry.name, }));
builder.allocator, &.{ path.getBackends (), entry.name, }));
},
.directory => try std.fs.deleteTreeAbsolute (try std.fs.path.join (
builder.allocator, &.{ path.backends, entry.name, })),
builder.allocator, &.{ path.getBackends (), entry.name, })),
else => {},
}
}
Expand All @@ -92,11 +111,7 @@ pub fn build (builder: *std.Build) !void
const target = builder.standardTargetOptions (.{});
const optimize = builder.standardOptimizeOption (.{});

var path: Paths = .{};
path.cimgui = try builder.build_root.join (builder.allocator,
&.{ "cimgui", });
path.backends = try std.fs.path.join (builder.allocator,
&.{ path.cimgui, "backends", });
const path = try Paths.init (builder);

const dependencies = try toolbox.Dependencies.init (builder, "cimgui.zig",
.{
Expand Down Expand Up @@ -139,10 +154,10 @@ pub fn build (builder: *std.Build) !void
entry.kind == .directory) toolbox.addInclude (lib, entry.path);
}

var cimgui_dir = try std.fs.openDirAbsolute (path.cimgui,
var cimgui_dir = try std.fs.openDirAbsolute (path.getCimgui (),
.{ .iterate = true, });
defer cimgui_dir.close ();
var backends_dir = try std.fs.openDirAbsolute (path.backends,
var backends_dir = try std.fs.openDirAbsolute (path.getBackends (),
.{ .iterate = true, });
defer backends_dir.close ();

Expand All @@ -154,7 +169,7 @@ pub fn build (builder: *std.Build) !void
lib.linkLibrary (glfw_dep.artifact ("glfw"));
lib.installLibraryHeaders (glfw_dep.artifact ("glfw"));

toolbox.addHeader (lib, path.cimgui, ".", &.{ ".h", });
toolbox.addHeader (lib, path.getCimgui (), ".", &.{ ".h", });

lib.linkLibCpp ();

Expand All @@ -164,14 +179,14 @@ pub fn build (builder: *std.Build) !void
if ((std.mem.startsWith (u8, entry.name, "imgui") or
std.mem.startsWith (u8, entry.name, "cimgui")) and
toolbox.isCppSource (entry.name) and entry.kind == .file)
try toolbox.addSource (lib, path.cimgui, entry.name, &flags);
try toolbox.addSource (lib, path.getCimgui (), entry.name, &flags);
}

it = backends_dir.iterate ();
while (try it.next ()) |*entry|
{
if (toolbox.isCppSource (entry.name))
try toolbox.addSource (lib, path.backends, entry.name, &flags);
try toolbox.addSource (lib, path.getBackends (), entry.name, &flags);
}

lib.root_module.addCMacro ("GLFW_INCLUDE_NONE", "1");
Expand Down