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authorOri Bernstein <ori@eigenstate.org>2021-06-14 00:00:37 +0000
committerOri Bernstein <ori@eigenstate.org>2021-06-14 00:00:37 +0000
commita73a964e51247ed169d322c725a3a18859f109a3 (patch)
tree3f752d117274d444bda44e85609aeac1acf313f3 /sys/src/cmd/python/Tools/scripts/rgrep.py
parente64efe273fcb921a61bf27d33b230c4e64fcd425 (diff)
python, hg: tow outside the environment.
they've served us well, and can ride off into the sunset.
Diffstat (limited to 'sys/src/cmd/python/Tools/scripts/rgrep.py')
-rwxr-xr-xsys/src/cmd/python/Tools/scripts/rgrep.py64
1 files changed, 0 insertions, 64 deletions
diff --git a/sys/src/cmd/python/Tools/scripts/rgrep.py b/sys/src/cmd/python/Tools/scripts/rgrep.py
deleted file mode 100755
index b64420645..000000000
--- a/sys/src/cmd/python/Tools/scripts/rgrep.py
+++ /dev/null
@@ -1,64 +0,0 @@
-#! /usr/bin/env python
-
-"""Reverse grep.
-
-Usage: rgrep [-i] pattern file
-"""
-
-import sys
-import re
-import getopt
-
-def main():
- bufsize = 64*1024
- reflags = 0
- opts, args = getopt.getopt(sys.argv[1:], "i")
- for o, a in opts:
- if o == '-i':
- reflags = reflags | re.IGNORECASE
- if len(args) < 2:
- usage("not enough arguments")
- if len(args) > 2:
- usage("exactly one file argument required")
- pattern, filename = args
- try:
- prog = re.compile(pattern, reflags)
- except re.error, msg:
- usage("error in regular expression: %s" % str(msg))
- try:
- f = open(filename)
- except IOError, msg:
- usage("can't open %s: %s" % (repr(filename), str(msg)), 1)
- f.seek(0, 2)
- pos = f.tell()
- leftover = None
- while pos > 0:
- size = min(pos, bufsize)
- pos = pos - size
- f.seek(pos)
- buffer = f.read(size)
- lines = buffer.split("\n")
- del buffer
- if leftover is None:
- if not lines[-1]:
- del lines[-1]
- else:
- lines[-1] = lines[-1] + leftover
- if pos > 0:
- leftover = lines[0]
- del lines[0]
- else:
- leftover = None
- lines.reverse()
- for line in lines:
- if prog.search(line):
- print line
-
-def usage(msg, code=2):
- sys.stdout = sys.stderr
- print msg
- print __doc__
- sys.exit(code)
-
-if __name__ == '__main__':
- main()