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Rev 4581 Rev 4718
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 * @param str String to search.
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 * @param str String to search.
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 * @param ch  Character to look for.
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 * @param ch  Character to look for.
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 *
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 *
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 * @return Pointer to character in @a str or NULL if not found.
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 * @return Pointer to character in @a str or NULL if not found.
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 */
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 */
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const char *str_chr(const char *str, wchar_t ch)
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char *str_chr(const char *str, wchar_t ch)
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{
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{
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    wchar_t acc;
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    wchar_t acc;
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    size_t off = 0;
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    size_t off = 0;
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    size_t last = 0;
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    size_t last = 0;
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    while ((acc = str_decode(str, &off, STR_NO_LIMIT)) != 0) {
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    while ((acc = str_decode(str, &off, STR_NO_LIMIT)) != 0) {
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        if (acc == ch)
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        if (acc == ch)
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            return (str + last);
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            return (char *) (str + last);
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        last = off;
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        last = off;
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    }
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    }
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    return NULL;
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    return NULL;
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}
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}
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 * @param str String to search.
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 * @param str String to search.
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 * @param ch  Character to look for.
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 * @param ch  Character to look for.
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 *
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 *
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 * @return Pointer to character in @a str or NULL if not found.
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 * @return Pointer to character in @a str or NULL if not found.
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 */
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 */
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const char *str_rchr(const char *str, wchar_t ch)
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char *str_rchr(const char *str, wchar_t ch)
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{
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{
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    wchar_t acc;
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    wchar_t acc;
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    size_t off = 0;
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    size_t off = 0;
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    size_t last = 0;
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    size_t last = 0;
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    const char *res = NULL;
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    const char *res = NULL;
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        if (acc == ch)
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        if (acc == ch)
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            res = (str + last);
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            res = (str + last);
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        last = off;
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        last = off;
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    }
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    }
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    return res;
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    return (char *) res;
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}
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}
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/** Insert a wide character into a wide string.
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/** Insert a wide character into a wide string.
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 *
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 *
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 * Insert a wide character into a wide string at position
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 * Insert a wide character into a wide string at position