diff options
Diffstat (limited to 'string.h')
| -rw-r--r-- | string.h | 56 |
1 files changed, 52 insertions, 4 deletions
@@ -3,6 +3,8 @@ #ifndef STRING_H #define STRING_H +#include "macros.h" + /* * dst: destination buffer * src: string to copy/concatenate @@ -33,7 +35,7 @@ void str_validate(char *str); void str_strip_colours(char *str); /** - * Valid filter types for IsValidAsciiChar. + * Valid filter types for IsValidChar. */ typedef enum CharSetFilter { CS_ALPHANUMERAL, //! Both numeric and alphabetic and spaces and stuff @@ -41,6 +43,11 @@ typedef enum CharSetFilter { CS_ALPHA, //! Only alphabetic values } CharSetFilter; +/** Convert the given string to lowercase */ +void strtolower(char *str); + +typedef uint32 WChar; + /** * Only allow certain keys. You can define the filter to be used. This makes * sure no invalid keys can get into an editbox, like BELL. @@ -48,9 +55,50 @@ typedef enum CharSetFilter { * @param afilter the filter to use * @return true or false depending if the character is printable/valid or not */ -bool IsValidAsciiChar(byte key, CharSetFilter afilter); +bool IsValidChar(WChar key, CharSetFilter afilter); + +size_t Utf8Decode(WChar *c, const char *s); +size_t Utf8Encode(char *buf, WChar c); + + +static inline WChar Utf8Consume(const char **s) +{ + WChar c; + *s += Utf8Decode(&c, *s); + return c; +} + + +/** Return the length of a UTF-8 encoded character. + * @param c Unicode character. + * @return Length of UTF-8 encoding for character. + */ +static inline size_t Utf8CharLen(WChar c) +{ + if (c < 0x80) return 1; + if (c < 0x800) return 2; + if (c < 0x10000) return 3; + if (c < 0x110000) return 4; + + /* Invalid valid, we encode as a '?' */ + return 1; +} + + +/* Check if the given character is part of a UTF8 sequence */ +static inline bool IsUtf8Part(char c) +{ + return GB(c, 6, 2) == 2; +} + + +static inline bool IsPrintable(WChar c) +{ + if (c < 0x20) return false; + if (c < 0xE000) return true; + if (c < 0xE200) return false; + return true; +} -/** Convert the given string to lowercase */ -void strtolower(char *str); #endif /* STRING_H */ |