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25 lines
1 KiB
Zig
25 lines
1 KiB
Zig
//! Shared code for script build scripts
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const std = @import("std");
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pub const confgen_json_opt = std.json.ParseOptions{ .ignore_unknown_fields = true };
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/// Retrieve some confgen options given a relative path to the dotfile root and a struct type
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/// with a field for each option.
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pub fn confgenGet(comptime T: type, root_path: []const u8, alloc: std.mem.Allocator) !T {
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const optsjson = try std.fs.path.join(alloc, &.{ root_path, "cgout", "opts.json" });
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defer alloc.free(optsjson);
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var file = try std.fs.cwd().openFile(optsjson, .{});
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defer file.close();
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var buf_reader = std.io.bufferedReader(file.reader());
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var reader = std.json.Reader(1024 * 8, @TypeOf(buf_reader.reader()))
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.init(alloc, buf_reader.reader());
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defer reader.deinit();
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const ret = try std.json.parseFromTokenSource(T, alloc, &reader, confgen_json_opt);
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// We just grab the value from the parse result as this data will almost certainly have been
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// allocated with the builder's arena anyways.
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return ret.value;
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}
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