string_func.h

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00001 /* $Id: string_func.h 16273 2009-05-10 21:33:55Z rubidium $ */
00002 
00018 #ifndef STRING_FUNC_H
00019 #define STRING_FUNC_H
00020 
00021 #include "core/bitmath_func.hpp"
00022 #include "string_type.h"
00023 
00038 void ttd_strlcat(char *dst, const char *src, size_t size);
00039 
00054 void ttd_strlcpy(char *dst, const char *src, size_t size);
00055 
00072 char *strecat(char *dst, const char *src, const char *last);
00073 
00090 char *strecpy(char *dst, const char *src, const char *last);
00091 
00092 int CDECL seprintf(char *str, const char *last, const char *format, ...) WARN_FORMAT(3, 4);
00093 
00094 char *CDECL str_fmt(const char *str, ...) WARN_FORMAT(1, 2);
00095 
00104 void str_validate(char *str, const char *last, bool allow_newlines = false, bool ignore = false);
00105 
00107 void str_strip_colours(char *str);
00108 
00110 void strtolower(char *str);
00111 
00119 static inline bool StrEmpty(const char *s)
00120 {
00121   return s == NULL || s[0] == '\0';
00122 }
00123 
00131 static inline size_t ttd_strnlen(const char *str, size_t maxlen)
00132 {
00133   const char *t;
00134   for (t = str; (size_t)(t - str) < maxlen && *t != '\0'; t++) {}
00135   return t - str;
00136 }
00137 
00139 char *md5sumToString(char *buf, const char *last, const uint8 md5sum[16]);
00140 
00148 bool IsValidChar(WChar key, CharSetFilter afilter);
00149 
00150 size_t Utf8Decode(WChar *c, const char *s);
00151 size_t Utf8Encode(char *buf, WChar c);
00152 size_t Utf8TrimString(char *s, size_t maxlen);
00153 
00154 
00155 static inline WChar Utf8Consume(const char **s)
00156 {
00157   WChar c;
00158   *s += Utf8Decode(&c, *s);
00159   return c;
00160 }
00161 
00162 
00167 static inline int8 Utf8CharLen(WChar c)
00168 {
00169   if (c < 0x80)       return 1;
00170   if (c < 0x800)      return 2;
00171   if (c < 0x10000)    return 3;
00172   if (c < 0x110000)   return 4;
00173 
00174   /* Invalid valid, we encode as a '?' */
00175   return 1;
00176 }
00177 
00178 
00186 static inline int8 Utf8EncodedCharLen(char c)
00187 {
00188   if (GB(c, 3, 5) == 0x1E) return 4;
00189   if (GB(c, 4, 4) == 0x0E) return 3;
00190   if (GB(c, 5, 3) == 0x06) return 2;
00191   if (GB(c, 7, 1) == 0x00) return 1;
00192 
00193   /* Invalid UTF8 start encoding */
00194   return 0;
00195 }
00196 
00197 
00198 /* Check if the given character is part of a UTF8 sequence */
00199 static inline bool IsUtf8Part(char c)
00200 {
00201   return GB(c, 6, 2) == 2;
00202 }
00203 
00211 static inline char *Utf8PrevChar(const char *s)
00212 {
00213   const char *ret = s;
00214   while (IsUtf8Part(*--ret)) {}
00215   return (char*)ret;
00216 }
00217 
00218 
00219 static inline bool IsPrintable(WChar c)
00220 {
00221   if (c < 0x20)   return false;
00222   if (c < 0xE000) return true;
00223   if (c < 0xE200) return false;
00224   return true;
00225 }
00226 
00234 static inline bool IsWhitespace(WChar c)
00235 {
00236   return
00237     c == 0x0020 /* SPACE */ ||
00238     c == 0x3000 /* IDEOGRAPHIC SPACE */
00239   ;
00240 }
00241 
00242 #ifndef _GNU_SOURCE
00243 /* strndup is a GNU extension */
00244 char *strndup(const char *s, size_t len);
00245 #endif /* !_GNU_SOURCE */
00246 
00247 /* strcasestr is available for _GNU_SOURCE, BSD and some Apple */
00248 #if defined(_GNU_SOURCE) || (defined(__BSD_VISIBLE) && __BSD_VISIBLE) || (defined(__APPLE__) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)))
00249 # undef DEFINE_STRCASESTR
00250 #else
00251 # define DEFINE_STRCASESTR
00252 const char *strcasestr(const char *haystack, const char *needle);
00253 #endif /* strcasestr is available */
00254 
00255 #endif /* STRING_FUNC_H */

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