sre_constants.py 7.3 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263
  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. """Internal support module for sre"""
  12. # update when constants are added or removed
  13. MAGIC = 20031017
  14. try:
  15. from _sre import MAXREPEAT
  16. except ImportError:
  17. import _sre
  18. MAXREPEAT = _sre.MAXREPEAT = 65535
  19. # SRE standard exception (access as sre.error)
  20. # should this really be here?
  21. class error(Exception):
  22. pass
  23. # operators
  24. FAILURE = "failure"
  25. SUCCESS = "success"
  26. ANY = "any"
  27. ANY_ALL = "any_all"
  28. ASSERT = "assert"
  29. ASSERT_NOT = "assert_not"
  30. AT = "at"
  31. BIGCHARSET = "bigcharset"
  32. BRANCH = "branch"
  33. CALL = "call"
  34. CATEGORY = "category"
  35. CHARSET = "charset"
  36. GROUPREF = "groupref"
  37. GROUPREF_IGNORE = "groupref_ignore"
  38. GROUPREF_EXISTS = "groupref_exists"
  39. IN = "in"
  40. IN_IGNORE = "in_ignore"
  41. INFO = "info"
  42. JUMP = "jump"
  43. LITERAL = "literal"
  44. LITERAL_IGNORE = "literal_ignore"
  45. MARK = "mark"
  46. MAX_REPEAT = "max_repeat"
  47. MAX_UNTIL = "max_until"
  48. MIN_REPEAT = "min_repeat"
  49. MIN_UNTIL = "min_until"
  50. NEGATE = "negate"
  51. NOT_LITERAL = "not_literal"
  52. NOT_LITERAL_IGNORE = "not_literal_ignore"
  53. RANGE = "range"
  54. REPEAT = "repeat"
  55. REPEAT_ONE = "repeat_one"
  56. SUBPATTERN = "subpattern"
  57. MIN_REPEAT_ONE = "min_repeat_one"
  58. # positions
  59. AT_BEGINNING = "at_beginning"
  60. AT_BEGINNING_LINE = "at_beginning_line"
  61. AT_BEGINNING_STRING = "at_beginning_string"
  62. AT_BOUNDARY = "at_boundary"
  63. AT_NON_BOUNDARY = "at_non_boundary"
  64. AT_END = "at_end"
  65. AT_END_LINE = "at_end_line"
  66. AT_END_STRING = "at_end_string"
  67. AT_LOC_BOUNDARY = "at_loc_boundary"
  68. AT_LOC_NON_BOUNDARY = "at_loc_non_boundary"
  69. AT_UNI_BOUNDARY = "at_uni_boundary"
  70. AT_UNI_NON_BOUNDARY = "at_uni_non_boundary"
  71. # categories
  72. CATEGORY_DIGIT = "category_digit"
  73. CATEGORY_NOT_DIGIT = "category_not_digit"
  74. CATEGORY_SPACE = "category_space"
  75. CATEGORY_NOT_SPACE = "category_not_space"
  76. CATEGORY_WORD = "category_word"
  77. CATEGORY_NOT_WORD = "category_not_word"
  78. CATEGORY_LINEBREAK = "category_linebreak"
  79. CATEGORY_NOT_LINEBREAK = "category_not_linebreak"
  80. CATEGORY_LOC_WORD = "category_loc_word"
  81. CATEGORY_LOC_NOT_WORD = "category_loc_not_word"
  82. CATEGORY_UNI_DIGIT = "category_uni_digit"
  83. CATEGORY_UNI_NOT_DIGIT = "category_uni_not_digit"
  84. CATEGORY_UNI_SPACE = "category_uni_space"
  85. CATEGORY_UNI_NOT_SPACE = "category_uni_not_space"
  86. CATEGORY_UNI_WORD = "category_uni_word"
  87. CATEGORY_UNI_NOT_WORD = "category_uni_not_word"
  88. CATEGORY_UNI_LINEBREAK = "category_uni_linebreak"
  89. CATEGORY_UNI_NOT_LINEBREAK = "category_uni_not_linebreak"
  90. OPCODES = [
  91. # failure=0 success=1 (just because it looks better that way :-)
  92. FAILURE, SUCCESS,
  93. ANY, ANY_ALL,
  94. ASSERT, ASSERT_NOT,
  95. AT,
  96. BRANCH,
  97. CALL,
  98. CATEGORY,
  99. CHARSET, BIGCHARSET,
  100. GROUPREF, GROUPREF_EXISTS, GROUPREF_IGNORE,
  101. IN, IN_IGNORE,
  102. INFO,
  103. JUMP,
  104. LITERAL, LITERAL_IGNORE,
  105. MARK,
  106. MAX_UNTIL,
  107. MIN_UNTIL,
  108. NOT_LITERAL, NOT_LITERAL_IGNORE,
  109. NEGATE,
  110. RANGE,
  111. REPEAT,
  112. REPEAT_ONE,
  113. SUBPATTERN,
  114. MIN_REPEAT_ONE
  115. ]
  116. ATCODES = [
  117. AT_BEGINNING, AT_BEGINNING_LINE, AT_BEGINNING_STRING, AT_BOUNDARY,
  118. AT_NON_BOUNDARY, AT_END, AT_END_LINE, AT_END_STRING,
  119. AT_LOC_BOUNDARY, AT_LOC_NON_BOUNDARY, AT_UNI_BOUNDARY,
  120. AT_UNI_NON_BOUNDARY
  121. ]
  122. CHCODES = [
  123. CATEGORY_DIGIT, CATEGORY_NOT_DIGIT, CATEGORY_SPACE,
  124. CATEGORY_NOT_SPACE, CATEGORY_WORD, CATEGORY_NOT_WORD,
  125. CATEGORY_LINEBREAK, CATEGORY_NOT_LINEBREAK, CATEGORY_LOC_WORD,
  126. CATEGORY_LOC_NOT_WORD, CATEGORY_UNI_DIGIT, CATEGORY_UNI_NOT_DIGIT,
  127. CATEGORY_UNI_SPACE, CATEGORY_UNI_NOT_SPACE, CATEGORY_UNI_WORD,
  128. CATEGORY_UNI_NOT_WORD, CATEGORY_UNI_LINEBREAK,
  129. CATEGORY_UNI_NOT_LINEBREAK
  130. ]
  131. def makedict(list):
  132. d = {}
  133. i = 0
  134. for item in list:
  135. d[item] = i
  136. i = i + 1
  137. return d
  138. OPCODES = makedict(OPCODES)
  139. ATCODES = makedict(ATCODES)
  140. CHCODES = makedict(CHCODES)
  141. # replacement operations for "ignore case" mode
  142. OP_IGNORE = {
  143. GROUPREF: GROUPREF_IGNORE,
  144. IN: IN_IGNORE,
  145. LITERAL: LITERAL_IGNORE,
  146. NOT_LITERAL: NOT_LITERAL_IGNORE
  147. }
  148. AT_MULTILINE = {
  149. AT_BEGINNING: AT_BEGINNING_LINE,
  150. AT_END: AT_END_LINE
  151. }
  152. AT_LOCALE = {
  153. AT_BOUNDARY: AT_LOC_BOUNDARY,
  154. AT_NON_BOUNDARY: AT_LOC_NON_BOUNDARY
  155. }
  156. AT_UNICODE = {
  157. AT_BOUNDARY: AT_UNI_BOUNDARY,
  158. AT_NON_BOUNDARY: AT_UNI_NON_BOUNDARY
  159. }
  160. CH_LOCALE = {
  161. CATEGORY_DIGIT: CATEGORY_DIGIT,
  162. CATEGORY_NOT_DIGIT: CATEGORY_NOT_DIGIT,
  163. CATEGORY_SPACE: CATEGORY_SPACE,
  164. CATEGORY_NOT_SPACE: CATEGORY_NOT_SPACE,
  165. CATEGORY_WORD: CATEGORY_LOC_WORD,
  166. CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD,
  167. CATEGORY_LINEBREAK: CATEGORY_LINEBREAK,
  168. CATEGORY_NOT_LINEBREAK: CATEGORY_NOT_LINEBREAK
  169. }
  170. CH_UNICODE = {
  171. CATEGORY_DIGIT: CATEGORY_UNI_DIGIT,
  172. CATEGORY_NOT_DIGIT: CATEGORY_UNI_NOT_DIGIT,
  173. CATEGORY_SPACE: CATEGORY_UNI_SPACE,
  174. CATEGORY_NOT_SPACE: CATEGORY_UNI_NOT_SPACE,
  175. CATEGORY_WORD: CATEGORY_UNI_WORD,
  176. CATEGORY_NOT_WORD: CATEGORY_UNI_NOT_WORD,
  177. CATEGORY_LINEBREAK: CATEGORY_UNI_LINEBREAK,
  178. CATEGORY_NOT_LINEBREAK: CATEGORY_UNI_NOT_LINEBREAK
  179. }
  180. # flags
  181. SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking)
  182. SRE_FLAG_IGNORECASE = 2 # case insensitive
  183. SRE_FLAG_LOCALE = 4 # honour system locale
  184. SRE_FLAG_MULTILINE = 8 # treat target as multiline string
  185. SRE_FLAG_DOTALL = 16 # treat target as a single string
  186. SRE_FLAG_UNICODE = 32 # use unicode locale
  187. SRE_FLAG_VERBOSE = 64 # ignore whitespace and comments
  188. SRE_FLAG_DEBUG = 128 # debugging
  189. # flags for INFO primitive
  190. SRE_INFO_PREFIX = 1 # has prefix
  191. SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix)
  192. SRE_INFO_CHARSET = 4 # pattern starts with character from given set
  193. if __name__ == "__main__":
  194. def dump(f, d, prefix):
  195. items = d.items()
  196. items.sort(key=lambda a: a[1])
  197. for k, v in items:
  198. f.write("#define %s_%s %s\n" % (prefix, k.upper(), v))
  199. f = open("sre_constants.h", "w")
  200. f.write("""\
  201. /*
  202. * Secret Labs' Regular Expression Engine
  203. *
  204. * regular expression matching engine
  205. *
  206. * NOTE: This file is generated by sre_constants.py. If you need
  207. * to change anything in here, edit sre_constants.py and run it.
  208. *
  209. * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved.
  210. *
  211. * See the _sre.c file for information on usage and redistribution.
  212. */
  213. """)
  214. f.write("#define SRE_MAGIC %d\n" % MAGIC)
  215. dump(f, OPCODES, "SRE_OP")
  216. dump(f, ATCODES, "SRE")
  217. dump(f, CHCODES, "SRE")
  218. f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE)
  219. f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE)
  220. f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE)
  221. f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE)
  222. f.write("#define SRE_FLAG_DOTALL %d\n" % SRE_FLAG_DOTALL)
  223. f.write("#define SRE_FLAG_UNICODE %d\n" % SRE_FLAG_UNICODE)
  224. f.write("#define SRE_FLAG_VERBOSE %d\n" % SRE_FLAG_VERBOSE)
  225. f.write("#define SRE_INFO_PREFIX %d\n" % SRE_INFO_PREFIX)
  226. f.write("#define SRE_INFO_LITERAL %d\n" % SRE_INFO_LITERAL)
  227. f.write("#define SRE_INFO_CHARSET %d\n" % SRE_INFO_CHARSET)
  228. f.close()
  229. print "done"