# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"""
(\$)
# Regexp for textmate dynamic variables
#TM_(
# BUNDLE_SUPPORT|COMMENT_(?:END|MODE|START)|CURRENT_(?:LINE|WORD)|DIRECTORY|FILE(?:NAME|PATH)|
# LINE_(?:INDEX|NUMBER)|PROJECT_DIRECTORY|SCOPE|SELECTED_(?:FILE[S]?|TEXT)|SOFT_TABS|SUPPORT_PATH|TAB_SIZE
#)
(?:
# BASIC
# BASIC: Variable name, no brackets
(?:(TM_[A-Z]+(?:_[A-Z]+)*)|([\d]))(?!\{)
|
# BRACKETED
([\{])
# BRACKETED: Variable name
(?:(TM_[A-Z]+(?:_[A-Z]+)*)|([\d]))
# BRACKETED: Post variable name expression
(?:
# Default keyword, single
([:].+?(?=[\}]))
|
# Default keyword, options
([\|].+?[\|](?=[\}]))
|
# Regular expression
(?:
([\/])
(.+?(?=\/))
([\/])
(.+?(?=\/))
([\/])
# Flags
# Not sure how to validate fully without back references?
([imx]{3})
(?=\})
)
|
(?:
([\/])
([^\/\}]+?)
(
(?<![\\]{2})
[\/]
)
([^\/\}]+?)
(
(?<![\\]{2})
[\/]
)
# Flags
# Not sure how to validate fully without back references?
([imx]{3})
)
|
# Match to bracket
(.+?(?=[\}]))?
)?
([\}])
)
"""
test_str = ("~~ Number Variables ~~~~~~~~~\n"
"Basic\n"
"\"$0\"\n"
"Bracketed\n"
"\"${1} \n"
"Default Value\n"
"\"${2:default}\"\n"
"Default Values\n"
"\"${3|defaultA,defaultB|}\"\n"
"Regex Replace\n"
"\"${4/find/replace/gmi}\"\n\n"
"~~ Dynamic Variables ~~~~~~~~\n"
"Basic\n"
"\"$TM_SELECTION_START\"\n"
"Bracketed\n"
"\"${TM_SELECTION_END}\"\n"
"Default Value\n"
"\"${TM_SELECTED_FILE:default}\"\n"
"Default Values\n"
"\"${TM_SELECTED_TEXT|defaultA,defaultB|}\"\n"
"Regex Replace\n"
"\"${TM_SELECTED_FILES/find/replace/gmi}\"\n")
matches = re.finditer(regex, test_str, re.MULTILINE | re.VERBOSE)
for matchNum, match in enumerate(matches, start=1):
print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
for groupNum in range(0, len(match.groups())):
groupNum = groupNum + 1
print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))
# Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Python, please visit: https://docs.python.org/3/library/re.html