21 lines
670 B
Zig
21 lines
670 B
Zig
const std = @import("std");
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const testing = std.testing;
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const GraphemeCache = @This();
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/// the underlying storage for graphemes. Right now 8kb
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buf: [1024 * 8]u8 = undefined,
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// the start index of the next grapheme
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idx: usize = 0,
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/// put a slice of bytes in the cache as a grapheme
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pub fn put(self: *GraphemeCache, bytes: []const u8) []u8 {
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// reset the idx to 0 if we would overflow
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if (self.idx + bytes.len > self.buf.len) self.idx = 0;
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defer self.idx += bytes.len;
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// copy the grapheme to our storage
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@memcpy(self.buf[self.idx .. self.idx + bytes.len], bytes);
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// return the slice
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return self.buf[self.idx .. self.idx + bytes.len];
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}
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