(svn r3726) - [6/6] Finalize conversion, finally save the patches struct.
- Remove the temporary synchronisation in during the map-transfer as this is no longer needed
- The saved patches work just like the saved gameoptions. You have a _patches and a _patches_newgame struct. The _patches_newgame struct contains the values from the configuration file and thus the defaults for new games. When a new game is started or an older game is loaded, the default values are copied over to _patches to be used. When you load a game that has PATS saved, the default values are also loaded, but immediately overwritten by the values from the savegame. This ensures that player-based values are always taken from your personal preferences.
- The current implementation also changes the default values if you change player-based settings in the game. For example changing window_snap_radius in a certain game will also change it for all next OpenTTD sessions.
- The savegame version has been increased to 22.
- The last 6 orso patches close the following reports:
[ 1366446 ] different names for patches: all patch settings have the same name as in the configuration file and are reachable from the console.
[ 1288024 ] Strange string on OTTD initial screen: configuration (and this includes patches) inputs are validated and clamped to their minimum/maximum values.
[ 1423198 ] Make "Signals on Drive side" player, not server, based: this is only visual so current setting is to save it with the savegame but not synchronise in multiplayer.
[ 1208070 ] Patches and New GRF options saved: apart from newgrf this is done

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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 */