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48 lines
747 B
C
48 lines
747 B
C
/*
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* This file is part of RGBDS.
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*
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* Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <stdint.h>
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#include "asm/main.h"
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#include "asm/util.h"
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#include "asm/warning.h"
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#include "extern/utf8decoder.h"
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/*
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* Calculate the hash value for a string
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*/
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uint32_t calchash(const char *s)
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{
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uint32_t hash = 5381;
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while (*s != 0)
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hash = (hash * 33) ^ (*s++);
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return hash;
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}
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int32_t readUTF8Char(char *dest, char *src)
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{
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uint32_t state;
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uint32_t codep;
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int32_t i;
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for (i = 0, state = 0;; i++) {
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if (decode(&state, &codep, (uint8_t)src[i]) == 1)
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fatalerror("invalid UTF-8 character");
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dest[i] = src[i];
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if (state == 0) {
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dest[++i] = '\0';
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return i;
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}
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}
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}
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