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/* $Id$ */

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#ifndef STRING_H

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#define STRING_H

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/*

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 * dst: destination buffer

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 * src: string to copy/concatenate

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 * size: size of the destination buffer

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 * usage: ttd_strlcpy(dst, src, lengthof(dst));

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 */

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void ttd_strlcat(char *dst, const char *src, size_t size);

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void ttd_strlcpy(char *dst, const char *src, size_t size);

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/*

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 * dst: destination buffer

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 * src: string to copy

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 * last: pointer to the last element in the dst array

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 *       if NULL no boundary check is performed

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 * returns a pointer to the terminating \0 in the destination buffer

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 * usage: strecpy(dst, src, lastof(dst));

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 */

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char* strecat(char* dst, const char* src, const char* last);

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char* strecpy(char* dst, const char* src, const char* last);

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char* CDECL str_fmt(const char* str, ...);

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/** Scans the string for valid characters and if it finds invalid ones,

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 * replaces them with a question mark '?' */

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void str_validate(char *str);

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/** Only allow valid ascii-function codes. Filter special codes like BELL and

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 * so on [we need a special filter here later]

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 * @param key character to be checked

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 * @return true or false depending if the character is printable/valid or not */

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static inline bool IsValidAsciiChar(byte key)

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{

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	// XXX This filter stops certain crashes, but may be too restrictive.

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	return (key >= ' ' && key < 127) || (key >= 160 &&

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		key != 0xAA && key != 0xAC && key != 0xAD && key != 0xAF &&

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		key != 0xB5 && key != 0xB6 && key != 0xB7 && key != 0xB9);

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}

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#endif /* STRING_H */