Mercurial > hg
annotate mercurial/minifileset.py @ 45658:6569b2371240
tests: back out accidentally queued changeset 0627cd03b1e9
I accidentally queued other people's patches on top of my own and
pushed mine along with theirs.
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Thu, 08 Oct 2020 23:14:41 -0700 |
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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 filesetlang, |
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15 pycompat, |
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16 ) |
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17 |
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18 |
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19 def _sizep(x): |
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20 # i18n: "size" is a keyword |
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21 expr = filesetlang.getstring(x, _(b"size requires an expression")) |
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22 return fileset.sizematcher(expr) |
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23 |
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24 |
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25 def _compile(tree): |
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26 if not tree: |
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27 raise error.ParseError(_(b"missing argument")) |
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28 op = tree[0] |
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29 if op == b'withstatus': |
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30 return _compile(tree[1]) |
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31 elif op in {b'symbol', b'string', b'kindpat'}: |
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32 name = filesetlang.getpattern( |
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33 tree, {b'path'}, _(b'invalid file pattern') |
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34 ) |
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35 if name.startswith(b'**'): # file extension test, ex. "**.tar.gz" |
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36 ext = name[2:] |
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37 for c in pycompat.bytestr(ext): |
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38 if c in b'*{}[]?/\\': |
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39 raise error.ParseError(_(b'reserved character: %s') % c) |
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40 return lambda n, s: n.endswith(ext) |
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41 elif name.startswith(b'path:'): # directory or full path test |
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42 p = name[5:] # prefix |
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43 pl = len(p) |
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44 f = lambda n, s: n.startswith(p) and ( |
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45 len(n) == pl or n[pl : pl + 1] == b'/' |
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46 ) |
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47 return f |
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48 raise error.ParseError( |
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49 _(b"unsupported file pattern: %s") % name, |
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50 hint=_(b'paths must be prefixed with "path:"'), |
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51 ) |
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52 elif op in {b'or', b'patterns'}: |
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53 funcs = [_compile(x) for x in tree[1:]] |
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54 return lambda n, s: any(f(n, s) for f in funcs) |
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55 elif op == b'and': |
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56 func1 = _compile(tree[1]) |
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57 func2 = _compile(tree[2]) |
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58 return lambda n, s: func1(n, s) and func2(n, s) |
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59 elif op == b'not': |
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60 return lambda n, s: not _compile(tree[1])(n, s) |
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61 elif op == b'func': |
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62 symbols = { |
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63 b'all': lambda n, s: True, |
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64 b'none': lambda n, s: False, |
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65 b'size': lambda n, s: _sizep(tree[2])(s), |
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66 } |
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67 |
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68 name = filesetlang.getsymbol(tree[1]) |
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69 if name in symbols: |
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70 return symbols[name] |
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71 |
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72 raise error.UnknownIdentifier(name, symbols.keys()) |
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73 elif op == b'minus': # equivalent to 'x and not y' |
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74 func1 = _compile(tree[1]) |
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75 func2 = _compile(tree[2]) |
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76 return lambda n, s: func1(n, s) and not func2(n, s) |
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77 elif op == b'list': |
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78 raise error.ParseError( |
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79 _(b"can't use a list in this context"), |
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80 hint=_(b'see \'hg help "filesets.x or y"\''), |
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81 ) |
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82 raise error.ProgrammingError(b'illegal tree: %r' % (tree,)) |
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83 |
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84 |
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85 def compile(text): |
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86 """generate a function (path, size) -> bool from filter specification. |
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87 |
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88 "text" could contain the operators defined by the fileset language for |
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89 common logic operations, and parenthesis for grouping. The supported path |
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90 tests are '**.extname' for file extension test, and '"path:dir/subdir"' |
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91 for prefix test. The ``size()`` predicate is borrowed from filesets to test |
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92 file size. The predicates ``all()`` and ``none()`` are also supported. |
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93 |
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94 '(**.php & size(">10MB")) | **.zip | (path:bin & !path:bin/README)' for |
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95 example, will catch all php files whose size is greater than 10 MB, all |
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96 files whose name ends with ".zip", and all files under "bin" in the repo |
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97 root except for "bin/README". |
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98 """ |
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99 tree = filesetlang.parse(text) |
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100 tree = filesetlang.analyze(tree) |
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101 tree = filesetlang.optimize(tree) |
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102 return _compile(tree) |