39 lines
682 B
Go
39 lines
682 B
Go
// Copyright (C) 2019 Marius Schellenberger
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package scan
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import (
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"net/http"
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"os"
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"path/filepath"
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"strings"
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)
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const (
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pdfContentType = "application/pdf"
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maxSniffSize = 512
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)
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func isPDF(path string) bool {
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// TODO
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// return checkContentType(path) || checkExtension(path)
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return checkContentType(path)
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}
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func checkContentType(path string) bool {
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f, err := os.Open(path)
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if err != nil {
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return false
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}
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defer f.Close()
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buf := make([]byte, maxSniffSize)
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_, err = f.Read(buf)
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if err != nil {
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return false
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}
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return http.DetectContentType(buf) == pdfContentType
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}
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func checkExtension(path string) bool {
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return strings.ToLower(filepath.Ext(path)) == pdfExt
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}
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