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const std = @import("../std.zig");
const Step = std.Build.Step;
const FileSource = std.Build.FileSource;
const InstallDir = std.Build.InstallDir;
const InstallFileStep = @This();
pub const base_id = .install_file;
step: Step,
source: FileSource,
dir: InstallDir,
dest_rel_path: []const u8,
/// This is used by the build system when a file being installed comes from one
/// package but is being installed by another.
dest_builder: *std.Build,
pub fn init(
owner: *std.Build,
source: FileSource,
dir: InstallDir,
dest_rel_path: []const u8,
) InstallFileStep {
owner.pushInstalledFile(dir, dest_rel_path);
return InstallFileStep{
.step = Step.init(.{
.id = base_id,
.name = owner.fmt("install {s} to {s}", .{ source.getDisplayName(), dest_rel_path }),
.owner = owner,
.makeFn = make,
}),
.source = source.dupe(owner),
.dir = dir.dupe(owner),
.dest_rel_path = owner.dupePath(dest_rel_path),
.dest_builder = owner,
};
}
fn make(step: *Step, prog_node: *std.Progress.Node) !void {
_ = prog_node;
const src_builder = step.owner;
const self = @fieldParentPtr(InstallFileStep, "step", step);
const dest_builder = self.dest_builder;
const full_src_path = self.source.getPath2(src_builder, step);
const full_dest_path = dest_builder.getInstallPath(self.dir, self.dest_rel_path);
const cwd = std.fs.cwd();
const prev = std.fs.Dir.updateFile(cwd, full_src_path, cwd, full_dest_path, .{}) catch |err| {
return step.fail("unable to update file from '{s}' to '{s}': {s}", .{
full_src_path, full_dest_path, @errorName(err),
});
};
step.result_cached = prev == .fresh;
}
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