sane-ctype.h

   1 #ifndef SANE_CTYPE_H
   2 #define SANE_CTYPE_H
   3
   4 /* Sane ctype - no locale, and works with signed chars */
   5 #undef isascii
   6 #undef isspace
   7 #undef isdigit
   8 #undef isalpha
   9 #undef isalnum
  10 #undef isprint
  11 #undef islower
  12 #undef isupper
  13 #undef tolower
  14 #undef toupper
  15 #undef iscntrl
  16 #undef ispunct
  17 #undef isxdigit
  18
  19 extern const unsigned char sane_ctype[256];
  20 extern const signed char hexval_table[256];
  21 #define GIT_SPACE 0x01
  22 #define GIT_DIGIT 0x02
  23 #define GIT_ALPHA 0x04
  24 #define GIT_GLOB_SPECIAL 0x08
  25 #define GIT_REGEX_SPECIAL 0x10
  26 #define GIT_PATHSPEC_MAGIC 0x20
  27 #define GIT_CNTRL 0x40
  28 #define GIT_PUNCT 0x80
  29 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
  30 #define isascii(x) (((x) & ~0x7f) == 0)
  31 #define isspace(x) sane_istest(x,GIT_SPACE)
  32 #define isdigit(x) sane_istest(x,GIT_DIGIT)
  33 #define isalpha(x) sane_istest(x,GIT_ALPHA)
  34 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
  35 #define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
  36 #define islower(x) sane_iscase(x, 1)
  37 #define isupper(x) sane_iscase(x, 0)
  38 #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
  39 #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
  40 #define iscntrl(x) (sane_istest(x,GIT_CNTRL))
  41 #define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
  42                 GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
  43 #define isxdigit(x) (hexval_table[(unsigned char)(x)] != -1)
  44 #define tolower(x) sane_case((unsigned char)(x), 0x20)
  45 #define toupper(x) sane_case((unsigned char)(x), 0)
  46 #define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC)
  47
  48 static inline int sane_case(int x, int high)
  49 {
  50         if (sane_istest(x, GIT_ALPHA))
  51                 x = (x & ~0x20) | high;
  52         return x;
  53 }
  54
  55 static inline int sane_iscase(int x, int is_lower)
  56 {
  57         if (!sane_istest(x, GIT_ALPHA))
  58                 return 0;
  59
  60         if (is_lower)
  61                 return (x & 0x20) != 0;
  62         else
  63                 return (x & 0x20) == 0;
  64 }
  65
  66 #endif