Mercurial > hg
annotate mercurial/minifileset.py @ 38687:1500cbe22d53
fileset: parse argument of size() by predicate function
This change is necessary to pass in a size expression to predicatematcher.
See the next patch.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sun, 10 Jun 2018 20:58:10 +0900 |
parents | 9c98cb30f4de |
children | d82c4d42b615 |
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1 # minifileset.py - a simple language to select files |
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2 # |
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3 # Copyright 2017 Facebook, Inc. |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 from .i18n import _ |
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11 from . import ( |
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12 error, |
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13 fileset, |
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14 pycompat, |
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15 ) |
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16 |
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17 def _sizep(x): |
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18 # i18n: "size" is a keyword |
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19 expr = fileset.getstring(x, _("size requires an expression")) |
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20 return fileset.sizematcher(expr) |
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21 |
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22 def _compile(tree): |
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23 if not tree: |
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24 raise error.ParseError(_("missing argument")) |
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25 op = tree[0] |
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26 if op in {'symbol', 'string', 'kindpat'}: |
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27 name = fileset.getpattern(tree, {'path'}, _('invalid file pattern')) |
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28 if name.startswith('**'): # file extension test, ex. "**.tar.gz" |
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29 ext = name[2:] |
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30 for c in pycompat.bytestr(ext): |
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31 if c in '*{}[]?/\\': |
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32 raise error.ParseError(_('reserved character: %s') % c) |
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33 return lambda n, s: n.endswith(ext) |
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34 elif name.startswith('path:'): # directory or full path test |
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35 p = name[5:] # prefix |
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36 pl = len(p) |
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37 f = lambda n, s: n.startswith(p) and (len(n) == pl |
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38 or n[pl:pl + 1] == '/') |
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39 return f |
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40 raise error.ParseError(_("unsupported file pattern: %s") % name, |
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41 hint=_('paths must be prefixed with "path:"')) |
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42 elif op == 'or': |
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43 func1 = _compile(tree[1]) |
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44 func2 = _compile(tree[2]) |
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45 return lambda n, s: func1(n, s) or func2(n, s) |
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46 elif op == 'and': |
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47 func1 = _compile(tree[1]) |
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48 func2 = _compile(tree[2]) |
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49 return lambda n, s: func1(n, s) and func2(n, s) |
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50 elif op == 'not': |
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51 return lambda n, s: not _compile(tree[1])(n, s) |
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52 elif op == 'group': |
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53 return _compile(tree[1]) |
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54 elif op == 'func': |
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55 symbols = { |
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56 'all': lambda n, s: True, |
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57 'none': lambda n, s: False, |
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58 'size': lambda n, s: _sizep(tree[2])(s), |
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59 } |
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60 |
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61 name = fileset.getsymbol(tree[1]) |
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62 if name in symbols: |
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63 return symbols[name] |
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64 |
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65 raise error.UnknownIdentifier(name, symbols.keys()) |
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66 elif op == 'minus': # equivalent to 'x and not y' |
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67 func1 = _compile(tree[1]) |
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68 func2 = _compile(tree[2]) |
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69 return lambda n, s: func1(n, s) and not func2(n, s) |
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70 elif op == 'negate': |
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71 raise error.ParseError(_("can't use negate operator in this context")) |
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72 elif op == 'list': |
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73 raise error.ParseError(_("can't use a list in this context"), |
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74 hint=_('see hg help "filesets.x or y"')) |
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75 raise error.ProgrammingError('illegal tree: %r' % (tree,)) |
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76 |
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77 def compile(text): |
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78 """generate a function (path, size) -> bool from filter specification. |
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79 |
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80 "text" could contain the operators defined by the fileset language for |
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81 common logic operations, and parenthesis for grouping. The supported path |
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82 tests are '**.extname' for file extension test, and '"path:dir/subdir"' |
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83 for prefix test. The ``size()`` predicate is borrowed from filesets to test |
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84 file size. The predicates ``all()`` and ``none()`` are also supported. |
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85 |
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86 '(**.php & size(">10MB")) | **.zip | (path:bin & !path:bin/README)' for |
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87 example, will catch all php files whose size is greater than 10 MB, all |
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88 files whose name ends with ".zip", and all files under "bin" in the repo |
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89 root except for "bin/README". |
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90 """ |
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91 tree = fileset.parse(text) |
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92 return _compile(tree) |