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48 lines
1.3 KiB
Lua
48 lines
1.3 KiB
Lua
require "unireader"
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require "inputbox"
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PDFReader = UniReader:new{}
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-- open a PDF file and its settings store
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function PDFReader:open(filename)
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-- muPDF manages its own cache, set second parameter
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-- to the maximum size you want it to grow
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local ok
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ok, self.doc = pcall(pdf.openDocument, filename, self.cache_document_size)
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if not ok then
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return false, self.doc -- will contain error message
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end
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if self.doc:needsPassword() then
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local password = InputBox:input(G_height-100, 100, "Pass:")
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if not password or not self.doc:authenticatePassword(password) then
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self.doc:close()
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self.doc = nil
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return false, "wrong or missing password"
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end
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-- password wrong or not entered
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end
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local ok, err = pcall(self.doc.getPages, self.doc)
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if not ok then
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-- for PDFs, they might trigger errors later when accessing page tree
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self.doc:close()
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self.doc = nil
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return false, "damaged page tree"
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end
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return true
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end
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----------------------------------------------------
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-- highlight support
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----------------------------------------------------
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function PDFReader:getText(pageno)
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local ok, page = pcall(self.doc.openPage, self.doc, pageno)
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if not ok then
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-- TODO: error handling
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return nil
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end
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local text = page:getPageText()
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--debug("## page:getPageText "..dump(text)) -- performance impact on device
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page:close()
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return text
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end
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