126 lines
3.4 KiB
Lua
126 lines
3.4 KiB
Lua
local m = require 'lpeglabel'
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local matcher = require 'glob.matcher'
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local function prop(name, pat)
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return m.Cg(m.Cc(true), name) * pat
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end
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local function object(type, pat)
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return m.Ct(
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m.Cg(m.Cc(type), 'type') *
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m.Cg(pat, 'value')
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)
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end
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local function expect(p, err)
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return p + m.T(err)
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end
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local parser = m.P {
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'Main',
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['Sp'] = m.S(' \t')^0,
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['Slash'] = m.P('/')^1,
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['Main'] = m.Ct(m.V'Sp' * m.P'{' * m.V'Pattern' * (',' * expect(m.V'Pattern', 'Miss exp after ","'))^0 * m.P'}')
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+ m.Ct(m.V'Pattern')
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+ m.T'Main Failed'
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,
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['Pattern'] = m.Ct(m.V'Sp' * prop('neg', m.P'!') * expect(m.V'Unit', 'Miss exp after "!"'))
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+ m.Ct(m.V'Unit')
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,
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['NeedRoot'] = prop('root', (m.P'.' * m.V'Slash' + m.V'Slash')),
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['Unit'] = m.V'Sp' * m.V'NeedRoot'^-1 * expect(m.V'Exp', 'Miss exp') * m.V'Sp',
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['Exp'] = m.V'Sp' * (m.V'FSymbol' + object('/', m.V'Slash') + m.V'Word')^0 * m.V'Sp',
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['Word'] = object('word', m.Ct((m.V'CSymbol' + m.V'Char' - m.V'FSymbol')^1)),
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['CSymbol'] = object('*', m.P'*')
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+ object('?', m.P'?')
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+ object('[]', m.V'Range')
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,
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['SimpleChar'] = m.P(1) - m.S',{}[]*?/',
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['EscChar'] = m.P'\\' / '' * m.P(1),
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['Char'] = object('char', m.Cs((m.V'EscChar' + m.V'SimpleChar')^1)),
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['FSymbol'] = object('**', m.P'**'),
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['RangeWord'] = 1 - m.P']',
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['Range'] = m.P'[' * m.Ct(m.V'RangeUnit'^0) * m.P']'^-1,
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['RangeUnit'] = m.Ct(m.C(m.V'RangeWord') * m.P'-' * m.C(m.V'RangeWord'))
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+ m.V'RangeWord',
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}
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local mt = {}
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mt.__index = mt
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mt.__name = 'glob'
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function mt:addPattern(pat)
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if type(pat) ~= 'string' then
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return
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end
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self.pattern[#self.pattern+1] = pat
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if self.options.ignoreCase then
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pat = pat:lower()
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end
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local states, err = parser:match(pat)
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if not states then
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self.errors[#self.errors+1] = {
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pattern = pat,
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message = err
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}
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return
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end
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for _, state in ipairs(states) do
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if state.neg then
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self.refused[#self.refused+1] = matcher(state)
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else
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self.passed[#self.passed+1] = matcher(state)
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end
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end
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end
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function mt:setOption(op, val)
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if val == nil then
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val = true
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end
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self.options[op] = val
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end
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function mt:__call(path)
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if self.options.ignoreCase then
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path = path:lower()
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end
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path = path:gsub('^[/\\]+', '')
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for _, refused in ipairs(self.refused) do
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if refused(path) then
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return false
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end
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end
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for _, passed in ipairs(self.passed) do
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if passed(path) then
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return true
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end
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end
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return false
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end
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return function (pattern, options)
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local self = setmetatable({
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pattern = {},
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options = {},
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passed = {},
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refused = {},
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errors = {},
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}, mt)
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if type(pattern) == 'table' then
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for _, pat in ipairs(pattern) do
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self:addPattern(pat)
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end
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else
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self:addPattern(pattern)
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end
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if type(options) == 'table' then
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for op, val in pairs(options) do
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self:setOption(op, val)
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end
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end
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return self
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end
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