64 lines
1.3 KiB
Lua
64 lines
1.3 KiB
Lua
local core = require "core"
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local command = require "core.command"
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local config = require "core.config"
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local DocView = require "core.docview"
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local Doc = require "core.doc"
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local cache = setmetatable({}, { __mode = "k" })
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local function detect_indent(doc)
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for _, text in ipairs(doc.lines) do
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local str = text:match("^ +")
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if str then return "soft", #str end
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local str = text:match("^\t+")
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if str then return "hard" end
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end
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end
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local function update_cache(doc)
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local type, size = detect_indent(doc)
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if type then
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cache[doc] = { type = type, size = size }
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end
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end
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local new = Doc.new
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function Doc:new(...)
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new(self, ...)
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update_cache(self)
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end
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local clean = Doc.clean
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function Doc:clean(...)
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clean(self, ...)
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update_cache(self)
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end
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local function with_indent_override(doc, fn, ...)
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local c = cache[doc]
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if not c then
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return fn(...)
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end
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local type, size = config.tab_type, config.indent_size
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config.tab_type, config.indent_size = c.type, c.size or config.indent_size
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local r1, r2, r3 = fn(...)
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config.tab_type, config.indent_size = type, size
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return r1, r2, r3
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end
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local perform = command.perform
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function command.perform(...)
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return with_indent_override(core.active_view.doc, perform, ...)
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end
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local draw = DocView.draw
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function DocView:draw(...)
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return with_indent_override(self.doc, draw, self, ...)
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end
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