source file: /System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/sre_constants.py
file stats: 123 lines, 99 executed: 80.5% covered
   1. #
   2. # Secret Labs' Regular Expression Engine
   3. #
   4. # various symbols used by the regular expression engine.
   5. # run this script to update the _sre include files!
   6. #
   7. # Copyright (c) 1998-2001 by Secret Labs AB.  All rights reserved.
   8. #
   9. # See the sre.py file for information on usage and redistribution.
  10. #
  11. 
  12. """Internal support module for sre"""
  13. 
  14. # update when constants are added or removed
  15. 
  16. MAGIC = 20030419
  17. 
  18. # max code word in this release
  19. 
  20. MAXREPEAT = 65535
  21. 
  22. # SRE standard exception (access as sre.error)
  23. # should this really be here?
  24. 
  25. class error(Exception):
  26.     pass
  27. 
  28. # operators
  29. 
  30. FAILURE = "failure"
  31. SUCCESS = "success"
  32. 
  33. ANY = "any"
  34. ANY_ALL = "any_all"
  35. ASSERT = "assert"
  36. ASSERT_NOT = "assert_not"
  37. AT = "at"
  38. BIGCHARSET = "bigcharset"
  39. BRANCH = "branch"
  40. CALL = "call"
  41. CATEGORY = "category"
  42. CHARSET = "charset"
  43. GROUPREF = "groupref"
  44. GROUPREF_IGNORE = "groupref_ignore"
  45. IN = "in"
  46. IN_IGNORE = "in_ignore"
  47. INFO = "info"
  48. JUMP = "jump"
  49. LITERAL = "literal"
  50. LITERAL_IGNORE = "literal_ignore"
  51. MARK = "mark"
  52. MAX_REPEAT = "max_repeat"
  53. MAX_UNTIL = "max_until"
  54. MIN_REPEAT = "min_repeat"
  55. MIN_UNTIL = "min_until"
  56. NEGATE = "negate"
  57. NOT_LITERAL = "not_literal"
  58. NOT_LITERAL_IGNORE = "not_literal_ignore"
  59. RANGE = "range"
  60. REPEAT = "repeat"
  61. REPEAT_ONE = "repeat_one"
  62. SUBPATTERN = "subpattern"
  63. MIN_REPEAT_ONE = "min_repeat_one"
  64. 
  65. # positions
  66. AT_BEGINNING = "at_beginning"
  67. AT_BEGINNING_LINE = "at_beginning_line"
  68. AT_BEGINNING_STRING = "at_beginning_string"
  69. AT_BOUNDARY = "at_boundary"
  70. AT_NON_BOUNDARY = "at_non_boundary"
  71. AT_END = "at_end"
  72. AT_END_LINE = "at_end_line"
  73. AT_END_STRING = "at_end_string"
  74. AT_LOC_BOUNDARY = "at_loc_boundary"
  75. AT_LOC_NON_BOUNDARY = "at_loc_non_boundary"
  76. AT_UNI_BOUNDARY = "at_uni_boundary"
  77. AT_UNI_NON_BOUNDARY = "at_uni_non_boundary"
  78. 
  79. # categories
  80. CATEGORY_DIGIT = "category_digit"
  81. CATEGORY_NOT_DIGIT = "category_not_digit"
  82. CATEGORY_SPACE = "category_space"
  83. CATEGORY_NOT_SPACE = "category_not_space"
  84. CATEGORY_WORD = "category_word"
  85. CATEGORY_NOT_WORD = "category_not_word"
  86. CATEGORY_LINEBREAK = "category_linebreak"
  87. CATEGORY_NOT_LINEBREAK = "category_not_linebreak"
  88. CATEGORY_LOC_WORD = "category_loc_word"
  89. CATEGORY_LOC_NOT_WORD = "category_loc_not_word"
  90. CATEGORY_UNI_DIGIT = "category_uni_digit"
  91. CATEGORY_UNI_NOT_DIGIT = "category_uni_not_digit"
  92. CATEGORY_UNI_SPACE = "category_uni_space"
  93. CATEGORY_UNI_NOT_SPACE = "category_uni_not_space"
  94. CATEGORY_UNI_WORD = "category_uni_word"
  95. CATEGORY_UNI_NOT_WORD = "category_uni_not_word"
  96. CATEGORY_UNI_LINEBREAK = "category_uni_linebreak"
  97. CATEGORY_UNI_NOT_LINEBREAK = "category_uni_not_linebreak"
  98. 
  99. OPCODES = [
 100. 
 101.     # failure=0 success=1 (just because it looks better that way :-)
 102.     FAILURE, SUCCESS,
 103. 
 104.     ANY, ANY_ALL,
 105.     ASSERT, ASSERT_NOT,
 106.     AT,
 107.     BRANCH,
 108.     CALL,
 109.     CATEGORY,
 110.     CHARSET, BIGCHARSET,
 111.     GROUPREF, GROUPREF_IGNORE,
 112.     IN, IN_IGNORE,
 113.     INFO,
 114.     JUMP,
 115.     LITERAL, LITERAL_IGNORE,
 116.     MARK,
 117.     MAX_UNTIL,
 118.     MIN_UNTIL,
 119.     NOT_LITERAL, NOT_LITERAL_IGNORE,
 120.     NEGATE,
 121.     RANGE,
 122.     REPEAT,
 123.     REPEAT_ONE,
 124.     SUBPATTERN,
 125.     MIN_REPEAT_ONE
 126. 
 127. ]
 128. 
 129. ATCODES = [
 130.     AT_BEGINNING, AT_BEGINNING_LINE, AT_BEGINNING_STRING, AT_BOUNDARY,
 131.     AT_NON_BOUNDARY, AT_END, AT_END_LINE, AT_END_STRING,
 132.     AT_LOC_BOUNDARY, AT_LOC_NON_BOUNDARY, AT_UNI_BOUNDARY,
 133.     AT_UNI_NON_BOUNDARY
 134. ]
 135. 
 136. CHCODES = [
 137.     CATEGORY_DIGIT, CATEGORY_NOT_DIGIT, CATEGORY_SPACE,
 138.     CATEGORY_NOT_SPACE, CATEGORY_WORD, CATEGORY_NOT_WORD,
 139.     CATEGORY_LINEBREAK, CATEGORY_NOT_LINEBREAK, CATEGORY_LOC_WORD,
 140.     CATEGORY_LOC_NOT_WORD, CATEGORY_UNI_DIGIT, CATEGORY_UNI_NOT_DIGIT,
 141.     CATEGORY_UNI_SPACE, CATEGORY_UNI_NOT_SPACE, CATEGORY_UNI_WORD,
 142.     CATEGORY_UNI_NOT_WORD, CATEGORY_UNI_LINEBREAK,
 143.     CATEGORY_UNI_NOT_LINEBREAK
 144. ]
 145. 
 146. def makedict(list):
 147.     d = {}
 148.     i = 0
 149.     for item in list:
 150.         d[item] = i
 151.         i = i + 1
 152.     return d
 153. 
 154. OPCODES = makedict(OPCODES)
 155. ATCODES = makedict(ATCODES)
 156. CHCODES = makedict(CHCODES)
 157. 
 158. # replacement operations for "ignore case" mode
 159. OP_IGNORE = {
 160.     GROUPREF: GROUPREF_IGNORE,
 161.     IN: IN_IGNORE,
 162.     LITERAL: LITERAL_IGNORE,
 163.     NOT_LITERAL: NOT_LITERAL_IGNORE
 164. }
 165. 
 166. AT_MULTILINE = {
 167.     AT_BEGINNING: AT_BEGINNING_LINE,
 168.     AT_END: AT_END_LINE
 169. }
 170. 
 171. AT_LOCALE = {
 172.     AT_BOUNDARY: AT_LOC_BOUNDARY,
 173.     AT_NON_BOUNDARY: AT_LOC_NON_BOUNDARY
 174. }
 175. 
 176. AT_UNICODE = {
 177.     AT_BOUNDARY: AT_UNI_BOUNDARY,
 178.     AT_NON_BOUNDARY: AT_UNI_NON_BOUNDARY
 179. }
 180. 
 181. CH_LOCALE = {
 182.     CATEGORY_DIGIT: CATEGORY_DIGIT,
 183.     CATEGORY_NOT_DIGIT: CATEGORY_NOT_DIGIT,
 184.     CATEGORY_SPACE: CATEGORY_SPACE,
 185.     CATEGORY_NOT_SPACE: CATEGORY_NOT_SPACE,
 186.     CATEGORY_WORD: CATEGORY_LOC_WORD,
 187.     CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD,
 188.     CATEGORY_LINEBREAK: CATEGORY_LINEBREAK,
 189.     CATEGORY_NOT_LINEBREAK: CATEGORY_NOT_LINEBREAK
 190. }
 191. 
 192. CH_UNICODE = {
 193.     CATEGORY_DIGIT: CATEGORY_UNI_DIGIT,
 194.     CATEGORY_NOT_DIGIT: CATEGORY_UNI_NOT_DIGIT,
 195.     CATEGORY_SPACE: CATEGORY_UNI_SPACE,
 196.     CATEGORY_NOT_SPACE: CATEGORY_UNI_NOT_SPACE,
 197.     CATEGORY_WORD: CATEGORY_UNI_WORD,
 198.     CATEGORY_NOT_WORD: CATEGORY_UNI_NOT_WORD,
 199.     CATEGORY_LINEBREAK: CATEGORY_UNI_LINEBREAK,
 200.     CATEGORY_NOT_LINEBREAK: CATEGORY_UNI_NOT_LINEBREAK
 201. }
 202. 
 203. # flags
 204. SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking)
 205. SRE_FLAG_IGNORECASE = 2 # case insensitive
 206. SRE_FLAG_LOCALE = 4 # honour system locale
 207. SRE_FLAG_MULTILINE = 8 # treat target as multiline string
 208. SRE_FLAG_DOTALL = 16 # treat target as a single string
 209. SRE_FLAG_UNICODE = 32 # use unicode locale
 210. SRE_FLAG_VERBOSE = 64 # ignore whitespace and comments
 211. SRE_FLAG_DEBUG = 128 # debugging
 212. 
 213. # flags for INFO primitive
 214. SRE_INFO_PREFIX = 1 # has prefix
 215. SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix)
 216. SRE_INFO_CHARSET = 4 # pattern starts with character from given set
 217. 
 218. if __name__ == "__main__":
 219.     import string
 220.     def dump(f, d, prefix):
 221.         items = d.items()
 222.         items.sort(lambda a, b: cmp(a[1], b[1]))
 223.         for k, v in items:
 224.             f.write("#define %s_%s %s\n" % (prefix, string.upper(k), v))
 225.     f = open("sre_constants.h", "w")
 226.     f.write("""\
 227. /*
 228.  * Secret Labs' Regular Expression Engine
 229.  *
 230.  * regular expression matching engine
 231.  *
 232.  * NOTE: This file is generated by sre_constants.py.  If you need
 233.  * to change anything in here, edit sre_constants.py and run it.
 234.  *
 235.  * Copyright (c) 1997-2001 by Secret Labs AB.  All rights reserved.
 236.  *
 237.  * See the _sre.c file for information on usage and redistribution.
 238.  */
 239. 
 240. """)
 241. 
 242.     f.write("#define SRE_MAGIC %d\n" % MAGIC)
 243. 
 244.     dump(f, OPCODES, "SRE_OP")
 245.     dump(f, ATCODES, "SRE")
 246.     dump(f, CHCODES, "SRE")
 247. 
 248.     f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE)
 249.     f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE)
 250.     f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE)
 251.     f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE)
 252.     f.write("#define SRE_FLAG_DOTALL %d\n" % SRE_FLAG_DOTALL)
 253.     f.write("#define SRE_FLAG_UNICODE %d\n" % SRE_FLAG_UNICODE)
 254.     f.write("#define SRE_FLAG_VERBOSE %d\n" % SRE_FLAG_VERBOSE)
 255. 
 256.     f.write("#define SRE_INFO_PREFIX %d\n" % SRE_INFO_PREFIX)
 257.     f.write("#define SRE_INFO_LITERAL %d\n" % SRE_INFO_LITERAL)
 258.     f.write("#define SRE_INFO_CHARSET %d\n" % SRE_INFO_CHARSET)
 259. 
 260.     f.close()
 261.     print "done"