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 */
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 */
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#ifndef KERN_STRING_H_
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#ifndef KERN_STRING_H_
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#define KERN_STRING_H_
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#define KERN_STRING_H_
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#include <arch/types.h>
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#include <typedefs.h>
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#define UTF8_NO_LIMIT  ((index_t) -1)
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extern char invalch;
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extern wchar_t utf8_decode(const char *str, index_t *index, index_t limit);
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extern bool utf8_encode(const wchar_t ch, char *str, index_t *index, index_t limit);
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extern size_t utf8_count_bytes(const char *str, count_t count);
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extern bool ascii_check(const wchar_t ch);
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extern bool unicode_check(const wchar_t ch);
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extern size_t strlen(const char *str);
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extern size_t strlen(const char *str);
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extern size_t strlen_utf8(const char *str);
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extern size_t strlen_utf32(const wchar_t *str);
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extern int strcmp(const char *src, const char *dst);
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extern int strcmp(const char *src, const char *dst);
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extern int strncmp(const char *src, const char *dst, size_t len);
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extern int strncmp(const char *src, const char *dst, size_t len);
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extern void strncpy(char *dest, const char *src, size_t len);
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extern void strncpy(char *dest, const char *src, size_t len);
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extern char *strchr(const char *s, int i);
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extern char *strchr(const char *s, int i);