Mercurial > dotfiles
annotate unixSoft/bin/sednames.py @ 442:5e6b1240684c
shell.d: add script to set some environment variables for openssl
author | Augie Fackler <raf@durin42.com> |
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date | Sat, 15 Jul 2017 13:00:27 -0400 |
parents | 91dbdbea15e5 |
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rev | line source |
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1
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1 #!/usr/bin/env python |
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2 |
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3 from itertools import imap as map |
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4 from itertools import izip as zip |
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5 |
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6 import re |
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7 whitespace_chars = { |
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8 '\a': r'\a', |
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9 '\b': r'\b', |
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10 '\t': r'\t', |
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11 '\n': r'\n', |
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12 '\v': r'\v', |
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13 '\f': r'\f', |
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14 '\r': r'\r', |
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15 } |
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16 whitespace_chars_exp = re.compile('[' + ''.join(whitespace_chars) + ']') |
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17 chars_to_escape = dict(zip(map(chr, xrange(0x00, 0x20)), ('\\' + ch for ch in map(chr, xrange(0x00, 0x20))))) |
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18 for ch in '{}' "'" '"' '$*?': |
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19 chars_to_escape[ch] = '\\' + ch |
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20 for ch in whitespace_chars: |
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21 del chars_to_escape[ch] # Let whitespace_chars handle these. |
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22 chars_to_escape_exp = re.compile('[][\\' + ''.join(chars_to_escape) + ']') |
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23 chars_to_escape['['] = '\[' |
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24 chars_to_escape[']'] = '\]' |
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25 chars_to_escape['\\'] = '\\\\' |
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26 minimal_chars_to_escape_exp = re.compile("[\\']") |
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27 |
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28 def quote_argument(arg): |
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29 count = 0 |
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30 match = chars_to_escape_exp.search(arg) |
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31 while match: |
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32 count += 1 |
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33 match = chars_to_escape_exp.search(arg, match.end()) |
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34 else: |
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35 del match |
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36 |
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37 if count > 2: |
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38 arg = "'" + re.sub(minimal_chars_to_escape_exp, lambda match: '\\' + match.group(0), arg) + "'" |
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39 else: |
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40 arg = re.sub(chars_to_escape_exp, lambda match: chars_to_escape[match.group(0)], arg) |
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41 |
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42 arg = re.sub(whitespace_chars_exp, lambda match: whitespace_chars[match.group(0)], arg) |
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43 return arg |
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44 |
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45 def custom_rename(option, opt_str, value, parser): |
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46 for i, arg in enumerate(parser.rargs): |
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47 if arg == ';': |
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48 break |
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49 parser.values.ensure_value('custom_rename', parser.rargs[:i]) |
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50 del parser.rargs[:i + 1] |
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51 |
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52 import optparse |
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53 parser = optparse.OptionParser(description="This program batch-renames files, optionally using a VCS (such as svn, hg, or bzr) or other external program to do the renaming. You specify the rename operations using sed commands, which you specify using the -e option.") |
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54 parser.add_option('-e', '--program', action='append', default=['']) |
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55 parser.add_option('--vcs', metavar='VCS', help='Version-control system with which to rename files, using <VCS> mv <SRC> <DST>; overridden by --custom-rename') |
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56 parser.add_option('--custom-rename', help='Custom command to rename the file (e.g., hg mv); works like find(1) -exec (but with two {}, which are src and dst in that order), or you can use {SRC} and {DST}, or you can omit {...} entirely in which case src and dst will be appended in that order', action='callback', type=None, callback=custom_rename, default=None) |
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57 parser.add_option('-q', '--quiet', action='store_true', default=False) |
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58 opts, args = parser.parse_args() |
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59 |
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60 try: |
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61 custom_rename = opts.custom_rename |
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62 except AttributeError: |
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63 try: |
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64 custom_rename = [opts.vcs, 'mv'] |
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65 except AttributeError: |
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66 custom_rename = None |
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67 |
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68 def prefix_with_dash_e(seq): |
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69 for arg in seq: |
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70 yield '-e' |
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71 yield arg |
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72 |
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73 import subprocess |
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74 sed = subprocess.Popen(['sed', '-El'] + list(prefix_with_dash_e(opts.program)), stdin=subprocess.PIPE, stdout=subprocess.PIPE) |
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75 |
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76 import os, sys |
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77 for src in args: |
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78 sed.stdin.write(src + '\n') |
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79 sed.stdin.flush() |
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80 dst = sed.stdout.readline().rstrip('\n') |
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81 if src == dst: |
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82 if not opts.quiet: |
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83 print >>sys.stderr, 'sed program did not transform %r - skipping' % (src,) |
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84 else: |
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85 if custom_rename: |
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86 src_and_dst = [src, dst] |
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87 rename_cmd = list(custom_rename) |
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88 for i, arg in enumerate(rename_cmd): |
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89 if arg == '{SRC}': |
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90 rename_cmd[i] = src |
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91 elif arg == '{DST}': |
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92 rename_cmd[i] = dst |
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93 elif arg == '{}': |
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94 try: |
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95 rename_cmd[i] = src_and_dst.pop(0) |
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96 except IndexError: |
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97 sys.exit('Too many {} arguments in custom rename command %r' % (custom_rename,)) |
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98 else: |
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99 rename_cmd += src_and_dst |
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100 |
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101 if not opts.quiet: |
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102 print >>sys.stderr, ' '.join(map(quote_argument, rename_cmd)) |
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103 subprocess.check_call(rename_cmd) |
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104 else: |
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105 if not opts.quiet: |
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106 print >>sys.stderr, 'Renaming %r to %r' % (src, dst) |
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107 os.rename(src, dst) |
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108 |
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109 sed.stdin.close() |
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110 sys.exit(sed.wait()) |