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46 lines
1.9 KiB
Zig
46 lines
1.9 KiB
Zig
const std = @import("std");
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// vt.cpp
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extern "c" fn ghostty_simd_codepoint_width(u32) i8;
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pub fn codepointWidth(cp: u32) i8 {
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//return @import("ziglyph").display_width.codePointWidth(@intCast(cp), .half);
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return ghostty_simd_codepoint_width(cp);
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}
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test "codepointWidth basic" {
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const testing = std.testing;
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try testing.expectEqual(@as(i8, 1), codepointWidth('a'));
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try testing.expectEqual(@as(i8, 1), codepointWidth(0x100)); // Ā
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try testing.expectEqual(@as(i8, 2), codepointWidth(0x3400)); // 㐀
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try testing.expectEqual(@as(i8, 2), codepointWidth(0x2E3A)); // ⸺
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try testing.expectEqual(@as(i8, 2), codepointWidth(0x1F1E6)); // 🇦
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try testing.expectEqual(@as(i8, 2), codepointWidth(0x4E00)); // 一
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try testing.expectEqual(@as(i8, 2), codepointWidth(0xF900)); // 豈
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try testing.expectEqual(@as(i8, 2), codepointWidth(0x20000)); // 𠀀
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try testing.expectEqual(@as(i8, 2), codepointWidth(0x30000)); // 𠀀
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// try testing.expectEqual(@as(i8, 1), @import("ziglyph").display_width.codePointWidth(0x100, .half));
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}
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// This is not very fast in debug modes, so its commented by default.
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// IMPORTANT: UNCOMMENT THIS WHENEVER MAKING CODEPOINTWIDTH CHANGES.
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// test "codepointWidth matches ziglyph" {
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// const testing = std.testing;
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// const ziglyph = @import("ziglyph");
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//
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// const min = 0xFF + 1; // start outside ascii
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// for (min..std.math.maxInt(u21)) |cp| {
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// const simd = codepointWidth(@intCast(cp));
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// const zg = ziglyph.display_width.codePointWidth(@intCast(cp), .half);
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// if (simd != zg) mismatch: {
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// if (cp == 0x2E3B) {
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// try testing.expectEqual(@as(i8, 2), simd);
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// break :mismatch;
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// }
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//
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// std.log.warn("mismatch cp=U+{x} simd={} zg={}", .{ cp, simd, zg });
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// try testing.expect(false);
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// }
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// }
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// }
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