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Carter Li
32 lines
938 B
C
32 lines
938 B
C
#include "common/wcwidth.h"
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#include "3rdparty/widecharwidth/widechar_width_c.h"
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int mk_wcwidth(uint32_t wc) {
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// // We render U+1F6E1 (🛡) with a width of 2,
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// // but widechar_width says it has a width of 1 because Unicode classifies it as "neutral".
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// //
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// // So we simply decide the width ourselves
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// if (wc == 0x1F6E1) return 2;
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//
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// Well terminals do show it as width 1 after all
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int width = widechar_wcwidth(wc);
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switch (width) {
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case widechar_ambiguous:
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case widechar_private_use:
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return 1;
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case widechar_widened_in_9:
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// Our renderer supports Unicode 9
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return 2;
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case widechar_nonprint:
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case widechar_combining:
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case widechar_unassigned:
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case widechar_non_character:
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return 0;
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default:
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// Use the width widechar_width gave us.
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return width;
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}
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}
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