Tools/scripts/make_ctype.py

   1 """Script that generates the ctype.h-replacement in stringobject.c."""
   2
   3 NAMES = ("LOWER", "UPPER", "ALPHA", "DIGIT", "XDIGIT", "ALNUM", "SPACE")
   4
   5 print("""
   6 #define FLAG_LOWER  0x01
   7 #define FLAG_UPPER  0x02
   8 #define FLAG_ALPHA  (FLAG_LOWER|FLAG_UPPER)
   9 #define FLAG_DIGIT  0x04
  10 #define FLAG_ALNUM  (FLAG_ALPHA|FLAG_DIGIT)
  11 #define FLAG_SPACE  0x08
  12 #define FLAG_XDIGIT 0x10
  13
  14 static unsigned int ctype_table[256] = {""")
  15
  16 for i in range(128):
  17     c = chr(i)
  18     flags = []
  19     for name in NAMES:
  20         if name in ("ALPHA", "ALNUM"):
  21             continue
  22         if name == "XDIGIT":
  23             method = lambda: c.isdigit() or c.upper() in "ABCDEF"
  24         else:
  25             method = getattr(c, "is" + name.lower())
  26         if method():
  27             flags.append("FLAG_" + name)
  28     rc = repr(c)
  29     if c == '\v':
  30         rc = "'\\v'"
  31     elif c == '\f':
  32         rc = "'\\f'"
  33     if not flags:
  34         print("    0, /* 0x%x %s */" % (i, rc))
  35     else:
  36         print("    %s, /* 0x%x %s */" % ("|".join(flags), i, rc))
  37
  38 for i in range(128, 256, 16):
  39     print("    %s," % ", ".join(16*["0"]))
  40
  41 print("};")
  42 print("")
  43
  44 for name in NAMES:
  45     print("#define IS%s(c) (ctype_table[Py_CHARMASK(c)] & FLAG_%s)" %
  46           (name, name))
  47
  48 print("")
  49
  50 for name in NAMES:
  51     name = "is" + name.lower()
  52     print("#undef %s" % name)
  53     print("#define %s(c) undefined_%s(c)" % (name, name))
  54
  55 print("""
  56 static unsigned char ctype_tolower[256] = {""")
  57
  58 for i in range(0, 256, 8):
  59     values = []
  60     for i in range(i, i+8):
  61         if i < 128:
  62             c = chr(i)
  63             if c.isupper():
  64                 i = ord(c.lower())
  65         values.append("0x%02x" % i)
  66     print("    %s," % ", ".join(values))
  67
  68 print("};")
  69
  70 print("""
  71 static unsigned char ctype_toupper[256] = {""")
  72
  73 for i in range(0, 256, 8):
  74     values = []
  75     for i in range(i, i+8):
  76         if i < 128:
  77             c = chr(i)
  78             if c.islower():
  79                 i = ord(c.upper())
  80         values.append("0x%02x" % i)
  81     print("    %s," % ", ".join(values))
  82
  83 print("};")
  84
  85 print("""
  86 #define TOLOWER(c) (ctype_tolower[Py_CHARMASK(c)])
  87 #define TOUPPER(c) (ctype_toupper[Py_CHARMASK(c)])
  88
  89 #undef tolower
  90 #define tolower(c) undefined_tolower(c)
  91 #undef toupper
  92 #define toupper(c) undefined_toupper(c)
  93 """)