mirror of https://github.com/koreader/koreader
add: filesearcher
parent
29a9996fb2
commit
85fedef7a4
@ -0,0 +1,179 @@
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require "rendertext"
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require "keys"
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require "graphics"
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require "fontchooser"
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require "inputbox"
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FileSearcher = {
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-- Class vars:
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-- font for displaying file/dir names
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face = freetype.newBuiltinFace("sans", 25),
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fhash = "s25",
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-- font for paging display
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sface = freetype.newBuiltinFace("sans", 16),
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sfhash = "s16",
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-- spacing between lines
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spacing = 40,
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-- state buffer
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dirs = nil,
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files = nil,
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items = 0,
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path = "",
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page = 1,
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current = 1,
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oldcurrent = 0,
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}
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function FileSearcher:readdir()
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self.dirs = {}
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self.files = {}
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for f in lfs.dir(self.path) do
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if lfs.attributes(self.path.."/"..f, "mode") == "directory" and f ~= "." and not string.match(f, "^%.[^.]") then
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table.insert(self.dirs, f)
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elseif string.match(f, ".+%.[pP][dD][fF]$") then
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table.insert(self.files, f)
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end
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end
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table.sort(self.dirs)
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table.sort(self.files)
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end
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function FileSearcher:setPath(newPath)
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self.path = newPath
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self:readdir()
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self.items = #self.dirs + #self.files
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if self.items == 0 then
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return nil
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end
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self.page = 1
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self.current = 1
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return true
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end
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function FileSearcher:choose(ypos, height)
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local perpage = math.floor(height / self.spacing) - 1
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local pagedirty = true
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local markerdirty = false
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local prevItem = function ()
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if self.current == 1 then
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if self.page > 1 then
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self.current = perpage
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self.page = self.page - 1
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pagedirty = true
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end
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else
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self.current = self.current - 1
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markerdirty = true
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end
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end
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local nextItem = function ()
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if self.current == perpage then
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if self.page < (self.items / perpage) then
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self.current = 1
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self.page = self.page + 1
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pagedirty = true
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end
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else
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if self.page ~= math.floor(self.items / perpage) + 1
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or self.current + (self.page-1)*perpage < self.items then
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self.current = self.current + 1
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markerdirty = true
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end
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end
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end
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while true do
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if pagedirty then
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fb.bb:paintRect(0, ypos, fb.bb:getWidth(), height, 0)
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local c
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for c = 1, perpage do
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local i = (self.page - 1) * perpage + c
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if i <= #self.dirs then
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-- resembles display in midnight commander: adds "/" prefix for directories
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renderUtf8Text(fb.bb, 39, ypos + self.spacing*c, self.face, self.fhash, "/", true)
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renderUtf8Text(fb.bb, 50, ypos + self.spacing*c, self.face, self.fhash, self.dirs[i], true)
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elseif i <= self.items then
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renderUtf8Text(fb.bb, 50, ypos + self.spacing*c, self.face, self.fhash, self.files[i-#self.dirs], true)
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end
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end
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renderUtf8Text(fb.bb, 39, ypos + self.spacing * perpage + 32, self.sface, self.sfhash,
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"Page "..self.page.." of "..(math.floor(self.items / perpage)+1), true)
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markerdirty = true
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end
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if markerdirty then
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if not pagedirty then
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if self.oldcurrent > 0 then
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fb.bb:paintRect(30, ypos + self.spacing*self.oldcurrent + 10, fb.bb:getWidth() - 60, 3, 0)
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fb:refresh(1, 30, ypos + self.spacing*self.oldcurrent + 10, fb.bb:getWidth() - 60, 3)
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end
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end
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fb.bb:paintRect(30, ypos + self.spacing*self.current + 10, fb.bb:getWidth() - 60, 3, 15)
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if not pagedirty then
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fb:refresh(1, 30, ypos + self.spacing*self.current + 10, fb.bb:getWidth() - 60, 3)
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end
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self.oldcurrent = self.current
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markerdirty = false
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end
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if pagedirty then
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fb:refresh(0, 0, ypos, fb.bb:getWidth(), height)
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pagedirty = false
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end
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local ev = input.waitForEvent()
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if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then
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ev.code = adjustFWKey(ev.code)
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if ev.code == KEY_FW_UP then
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prevItem()
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elseif ev.code == KEY_FW_DOWN then
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nextItem()
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elseif ev.code == KEY_F then
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FontChooser:init()
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newfont = FontChooser:choose(0, height)
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if newfont ~= nil then
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self.face = freetype.newBuiltinFace(newfont, 25)
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clearglyphcache()
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end
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pagedirty = true
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elseif ev.code == KEY_S then
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InputBox:input()
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elseif ev.code == KEY_PGFWD then
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if self.page < (self.items / perpage) then
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if self.current + self.page*perpage > self.items then
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self.current = self.items - self.page*perpage
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end
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self.page = self.page + 1
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pagedirty = true
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else
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self.current = self.items - (self.page-1)*perpage
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markerdirty = true
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end
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elseif ev.code == KEY_PGBCK then
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if self.page > 1 then
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self.page = self.page - 1
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pagedirty = true
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else
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self.current = 1
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markerdirty = true
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end
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elseif ev.code == KEY_ENTER or ev.code == KEY_FW_PRESS then
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local newdir = self.dirs[perpage*(self.page-1)+self.current]
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if newdir == ".." then
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local path = string.gsub(self.path, "(.*)/[^/]+/?$", "%1")
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self:setPath(path)
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elseif newdir then
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local path = self.path.."/"..newdir
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self:setPath(path)
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else
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return self.path.."/"..self.files[perpage*(self.page-1)+self.current - #self.dirs]
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end
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pagedirty = true
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elseif ev.code == KEY_BACK then
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return nil
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end
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end
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end
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end
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