├── .hgtags ├── LICENSE ├── README.markdown └── peat /.hgtags: -------------------------------------------------------------------------------- 1 | 22289e267949bde1fb58edeae0c5463a1ab02702 v0.1.0 2 | 6ba80dea59944ba46c8538322052c5f3259cc979 v0.2.0 3 | 0e92c9363422df88fb493d3546fa6309eb60f7af v0.2.1 4 | 6cdd3ed3ef128c6c6a875e93f48b3fff684cfbc3 v0.3.0 5 | f421e218452df1230a276b1a6ad62063640e93d0 v1.0.0 6 | a41fd22e80cb0603c1f14bcdb95027e8ec2514b0 v1.0.1 7 | b045294f3cd16d084abac96be63fe1320391f20e v1.0.2 8 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.markdown: -------------------------------------------------------------------------------- 1 | ############################## 2 | # ____ ___ ____ ______ # 3 | # | \ / _] / T| T # 4 | # | o )/ [_ Y o || | # 5 | # | _/Y _]| |l_j l_j # 6 | # | | | [_ | _ | | | # 7 | # | | | T| | | | | # 8 | # l__j l_____jl__j__j l__j # 9 | # # 10 | ##### ##### 11 | # Repeat commands! # 12 | ################## 13 | 14 | `peat` repeats commands. 15 | 16 | It's kind of like [Kicker][] except: 17 | 18 | * It doesn't use inotify or OS X FSEvents, so it'll run anywhere. 19 | * It doesn't require external libraries, so it'll run anywhere with Python. 20 | * It won't eat your CPU (unless you try to watch too much). 21 | * It takes paths to watch on standard input so you can use something like 22 | find(1) or [friendly-find][] to specify what to watch. 23 | 24 | [Kicker]: https://github.com/alloy/kicker 25 | [friendly-find]: https://github.com/sjl/friendly-find 26 | 27 | **Table of Contents** 28 | 29 | [TOC] 30 | 31 | Installation 32 | ------------ 33 | 34 | Get the `peat` script on your machine and into your `$PATH` somehow. Copy and 35 | paste it, `curl` it, or clone the repository. Make sure it's executable. 36 | That's it. 37 | 38 | Usage 39 | ----- 40 | 41 | Generate a list of files you want to watch for changes, separated by whitespace. 42 | echo(1), find(1) or [friendly-find][] are good for this: 43 | 44 | $ ffind '.*.py$' 45 | ./foo.py 46 | ./bar.py 47 | 48 | $ echo *.py 49 | foo.py bar.py 50 | 51 | Now pipe that to `peat`, and specify the command you want to run whenever one of 52 | those files changes: 53 | 54 | $ ffind '.*.py$' | peat 'echo "A file changed!"' 55 | 56 | Use `Ctrl-C` to stop. 57 | 58 | The command to run needs to be specified as a single argument to `peat`. You 59 | can do this with a shell string as seen above. Using a single-quoted string 60 | like this will preserve wildcards and such: 61 | 62 | $ ffind '.*.py$' | peat 'rm *.pyc' 63 | 64 | This will delete all `.pyc` files in the current directory when a Python file is 65 | modified. Google around for "shell quoting" if you don't understand what's 66 | happening here. 67 | 68 | ### Dynamic File Listing 69 | 70 | If you want to build the file list fresh each time (so that `peat` will pick up 71 | newly created files without having to restart it) you can use the `--dynamic` 72 | option. 73 | 74 | Instead of piping in the list of files to watch, you'll specify a *command* that 75 | `peat` will run to generate the list before every check (as well as the actual 76 | command to run, of course). For example: 77 | 78 | $ ffind ".markdown$" 79 | ./foo.markdown 80 | ./bar/baz.markdown 81 | 82 | $ peat --dynamic 'ffind ".markdown$"' 'echo "A file changed!"' 83 | 84 | ### Tips & Tricks 85 | 86 | Watch all the files Mercurial is tracking (instead of hand-crafting a `find` 87 | command to output that list) and run `make` on changes: 88 | 89 | $ hg files | peat make 90 | 91 | ### Full Usage 92 | 93 | Here's the full usage: 94 | 95 | Usage: peat [options] COMMAND 96 | 97 | COMMAND should be given as a single argument using a shell string. 98 | 99 | A list of paths to watch should be piped in on standard input. 100 | 101 | For example: 102 | 103 | find . | peat './test.sh' 104 | find . -name '*.py' | peat 'rm *.pyc' 105 | find . -name '*.py' -print0 | peat -0 'rm *.pyc' 106 | 107 | If --dynamic is used, the given command will be run each time to generate the 108 | list of files to check: 109 | 110 | peat --dynamic 'find .' './test.sh' 111 | peat --dynamic 'find . -name '\''*.py'\''' 'rm *.pyc' 112 | 113 | 114 | Options: 115 | -h, --help show this help message and exit 116 | -i N, --interval=N interval between checks in milliseconds 117 | -I, --smart-interval determine the interval based on number of files 118 | watched (default) 119 | -d COMMAND, --dynamic=COMMAND 120 | run COMMAND before each run to generate the list of 121 | files to check 122 | -D, --no-dynamic take a list of files to watch on standard in (default) 123 | -c, --clear clear screen before runs (default) 124 | -C, --no-clear don't clear screen before runs 125 | -v, --verbose show extra logging output (default) 126 | -q, --quiet don't show extra logging output 127 | -w, --whitespace assume paths are separated by whitespace (default) 128 | -n, --newlines assume paths are separated by newlines 129 | -s, --spaces assume paths are separated by spaces 130 | -0, --zero assume paths are separated by null bytes 131 | 132 | License 133 | ------- 134 | 135 | Copyright 2016 Steve Losh and contributors. 136 | 137 | Licensed under [version 3 of the GPL][gpl]. 138 | 139 | Remember that you can use GPL'ed software through their command line interfaces 140 | without any license-related restrictions. `peat`'s command line interface is 141 | the only stable one, so it's the only one you should ever be using anyway. The 142 | license doesn't affect you unless you're: 143 | 144 | * Trying to copy the code and release a non-GPL'ed version of `peat`. 145 | * Trying to use it as a Python module from other Python code (for your own 146 | sanity I urge you to not do this) and release the result under a non-GPL 147 | license. 148 | 149 | [gpl]: http://www.gnu.org/copyleft/gpl.html 150 | -------------------------------------------------------------------------------- /peat: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf8 -*- 3 | 4 | ############################## 5 | # ____ ___ ____ ______ # 6 | # | \ / _] / T| T # 7 | # | o )/ [_ Y o || | # 8 | # | _/Y _]| |l_j l_j # 9 | # | | | [_ | _ | | | # 10 | # | | | T| | | | | # 11 | # l__j l_____jl__j__j l__j # 12 | # # 13 | ##### ##### 14 | # Repeat commands! # 15 | ################## 16 | 17 | import errno, os, subprocess, sys, time 18 | from optparse import OptionParser 19 | 20 | 21 | interval = 1.0 22 | command = 'true' 23 | clear = True 24 | get_paths = lambda: set() 25 | verbose = True 26 | dynamic = None 27 | last_run = None 28 | 29 | 30 | USAGE = r"""usage: %prog [options] COMMAND 31 | 32 | COMMAND should be given as a single argument using a shell string. 33 | 34 | A list of paths to watch should be piped in on standard input. 35 | 36 | For example: 37 | 38 | find . | peat './test.sh' 39 | find . -name '*.py' | peat 'rm *.pyc' 40 | find . -name '*.py' -print0 | peat -0 'rm *.pyc' 41 | 42 | If --dynamic is used, the given command will be run each time to generate the 43 | list of files to check: 44 | 45 | peat --dynamic 'find .' './test.sh' 46 | peat --dynamic 'find . -name '\''*.py'\''' 'rm *.pyc' 47 | """ 48 | 49 | 50 | def log(s): 51 | if verbose: 52 | print(s) 53 | 54 | def die(s): 55 | sys.stderr.write('ERROR: ' + s + '\n') 56 | sys.exit(1) 57 | 58 | def check(paths): 59 | for p in paths: 60 | try: 61 | if os.stat(p).st_mtime >= last_run: 62 | return True 63 | except OSError as e: 64 | # If the file has been deleted since we started watching, don't 65 | # worry about it. 66 | if e.errno == errno.ENOENT: 67 | pass 68 | else: 69 | raise 70 | return False 71 | 72 | def run(): 73 | global last_run 74 | last_run = time.time() 75 | log("running: " + command) 76 | subprocess.call(command, shell=True) 77 | 78 | def build_option_parser(): 79 | p = OptionParser(USAGE) 80 | 81 | # Main options 82 | p.add_option('-i', '--interval', default=None, 83 | help='interval between checks in milliseconds', 84 | metavar='N') 85 | p.add_option('-I', '--smart-interval', dest='interval', 86 | action='store_const', const=None, 87 | help='determine the interval based on number of files watched (default)') 88 | 89 | p.add_option('-d', '--dynamic', default=None, 90 | help='run COMMAND before each run to generate the list of files to check', 91 | metavar='COMMAND') 92 | p.add_option('-D', '--no-dynamic', dest='dynamic', 93 | action='store_const', const=None, 94 | help='take a list of files to watch on standard in (default)') 95 | 96 | p.add_option('-c', '--clear', default=True, 97 | action='store_true', dest='clear', 98 | help='clear screen before runs (default)') 99 | p.add_option('-C', '--no-clear', 100 | action='store_false', dest='clear', 101 | help="don't clear screen before runs") 102 | 103 | p.add_option('-v', '--verbose', default=True, 104 | action='store_true', dest='verbose', 105 | help='show extra logging output (default)') 106 | p.add_option('-q', '--quiet', 107 | action='store_false', dest='verbose', 108 | help="don't show extra logging output") 109 | 110 | p.add_option('-w', '--whitespace', default=None, 111 | action='store_const', dest='sep', const=None, 112 | help="assume paths are separated by whitespace (default)") 113 | p.add_option('-n', '--newlines', 114 | action='store_const', dest='sep', const='\n', 115 | help="assume paths are separated by newlines") 116 | p.add_option('-s', '--spaces', 117 | action='store_const', dest='sep', const=' ', 118 | help="assume paths are separated by spaces") 119 | p.add_option('-0', '--zero', 120 | action='store_const', dest='sep', const='\0', 121 | help="assume paths are separated by null bytes") 122 | 123 | return p 124 | 125 | 126 | def _main(): 127 | if dynamic: 128 | log("Running the following command to generate watch list:") 129 | log(' ' + dynamic) 130 | log('') 131 | 132 | log("Watching the following paths:") 133 | for p in get_paths(): 134 | log(' ' + p) 135 | log('') 136 | log('Checking for changes every %d milliseconds.' % int(interval * 1000)) 137 | log('') 138 | 139 | run() 140 | 141 | while True: 142 | time.sleep(interval) 143 | if check(get_paths()): 144 | if clear: 145 | subprocess.check_call('clear') 146 | run() 147 | 148 | def smart_interval(count): 149 | """Return the smart interval to use in milliseconds.""" 150 | if count >= 50: 151 | return 1000 152 | else: 153 | sq = lambda n: n * n 154 | return int(1000 * (1 - (sq(50.0 - count) / sq(50)))) 155 | 156 | def _parse_interval(options): 157 | global get_paths 158 | if options.interval: 159 | i = int(options.interval) 160 | elif options.dynamic: 161 | i = 1000 162 | else: 163 | i = smart_interval(len(get_paths())) 164 | 165 | return i / 1000.0 166 | 167 | def _parse_paths(sep, data): 168 | if not sep: 169 | paths = data.split() 170 | else: 171 | paths = data.split(sep) 172 | 173 | paths = [p.rstrip('\n') for p in paths if p] 174 | paths = map(os.path.abspath, paths) 175 | paths = set(paths) 176 | 177 | return paths 178 | 179 | def main(): 180 | global interval, command, clear, get_paths, verbose, dynamic 181 | 182 | (options, args) = build_option_parser().parse_args() 183 | 184 | if len(args) != 1: 185 | die("exactly one command must be given") 186 | 187 | command = args[0] 188 | clear = options.clear 189 | verbose = options.verbose 190 | sep = options.sep 191 | dynamic = options.dynamic 192 | 193 | if dynamic: 194 | def _get_paths(): 195 | data = subprocess.check_output(dynamic, shell=True) 196 | return _parse_paths(sep, data) 197 | 198 | get_paths = _get_paths 199 | else: 200 | data = sys.stdin.read() 201 | paths = _parse_paths(sep, data) 202 | 203 | if not paths: 204 | die("no paths to watch were given on standard input") 205 | 206 | for path in paths: 207 | if not os.path.exists(path): 208 | die('path to watch does not exist: ' + repr(path)) 209 | 210 | get_paths = lambda: paths 211 | 212 | interval = _parse_interval(options) 213 | 214 | _main() 215 | 216 | 217 | if __name__ == '__main__': 218 | import signal 219 | def sigint_handler(signal, frame): 220 | sys.stdout.write('\n') 221 | sys.exit(130) 222 | signal.signal(signal.SIGINT, sigint_handler) 223 | main() 224 | 225 | --------------------------------------------------------------------------------