Grep implementation with replace
Project description
Greptile
Fast grep implementation in python, with replace features
usage: greptile.py [-h] [-v] [-x EXTENSIONS [EXTENSIONS ...]] [-r] [-l] [-i] [-g REPLACE_EXPR] [-f REPLACE_EXPR] expression [file] file search and replace with regular expressions positional arguments: expression regular expression file file path (or directory if -r is used) optional arguments: -h, --help show this help message and exit -v, --version show program's version number and exit -x EXTENSIONS [EXTENSIONS ...], --extensions EXTENSIONS [EXTENSIONS ...] restrict search to file extensions (ex: .py .txt .java .xml) -r, --recursive recursively search in path -l, --list list files matching pattern -i, --inplace update the file inplace (with -g or -f) -g REPLACE_EXPR, --replace-global REPLACE_EXPR global replacement expression -f REPLACE_EXPR, --replace-first REPLACE_EXPR first occurrence replacement expression
Why fast?
Because it exclusively uses generators, reptile never allocates big lists, it always processes one line in one file at a time. you can do a search on big files and large directories like / recursively without memory overhead.
Examples:
Search "import" in ./greptile.py :
$ ./greptile.py "import" ./greptile.py
import re
import os
import sys
import argparse
Recursively search from ~/ lines in python files containing Copyright :
$ ./greptile.py -x .py -r "Copyright" ~/
/Users/nic/Library/Android/sdk/platform-tools/systrace/systrace-legacy.py 2: # Copyright (c) 2011 The Chromium Authors. All rights reserved.
/Users/nic/Library/Android/sdk/platform-tools/systrace/systrace.py 2: # Copyright (c) 2011 The Chromium Authors. All rights reserved.
/Users/nic/Library/Android/sdk/platform-tools/systrace/systrace_agent.py 0: # Copyright (c) 2015 The Chromium Authors. All rights reserved.
/Users/nic/Library/Android/sdk/platform-tools/systrace/util.py 0: # Copyright (c) 2015 The Chromium Authors. All rights reserved.
/Users/nic/Library/Android/sdk/platform-tools/systrace/agents/__init__.py 0: # Copyright (c) 2015 The Chromium Authors. All rights reserved.
/Users/nic/Library/Android/sdk/platform-tools/systrace/agents/atrace_agent.py 0: # Copyright (c) 2015 The Chromium Authors. All rights reserved.
...
Replacement & easy grouping with python re.sub syntax :
$ greptile.py "\[(.*)\]\((.*)\)" README.md -g "<a href=\"\2\">\1</a>" | diff -u README.md -
--- README.md 2016-04-19 22:37:20.000000000 +0200
+++ - 2016-04-25 14:54:24.000000000 +0200
@@ -1,4 +1,4 @@
-![Agera](https://github.com/google/agera/blob/master/doc/images/agera.png)
+!<a href="https://github.com/google/agera/blob/master/doc/images/agera.png">Agera</a>
Reactive Programming for Android
================================
Api:
import greptile
# Replace "import" by "export" from dir `./`, in all files and these extensions: .py, .xml, .java
greptile.replace('import', 'export', './', '.py', '.xml', '.java')
# Return filenames of all files containing the text "import" from dir `./` and .py, .xml, .java
my_list = greptile.grep_rl('import', './', '.py', '.xml', '.java')
# same as calling replace()
greptile.sed_i(my_list, 'import', 'export')
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