25 lines
664 B
C
25 lines
664 B
C
/* This software is licensed by the MIT License, see LICENSE file */
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/* Copyright © 2022 Gregory Lirent */
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#include "build.h"
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int charsize(const char* s) {
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unsigned int v;
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if (*(unsigned char*)s <= 0x7f)
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return 1;
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memcpy(&v, s, 4);
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if (IS_LITTLE_ENDIAN) {
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if ((v&0x0000c0e0) == 0x000080c0) return 2;
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if ((v&0xc0c0c0f8) == 0x808080f0) return 4;
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if ((v&0x00c0c0f0) == 0x008080e0) return 3;
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} else {
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if ((v&0xe0c00000) == 0xc0800000) return 2;
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if ((v&0xf8c0c0c0) == 0xf0808080) return 4;
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if ((v&0xf0c0c000) == 0xe0808000) return 3;
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}
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return 0;
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}
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