67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
package matchers
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import "bytes"
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var (
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TypeDoc = newType("doc", "application/msword")
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TypeDocx = newType("docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document")
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TypeXls = newType("xls", "application/vnd.ms-excel")
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TypeXlsx = newType("xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
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TypePpt = newType("ppt", "application/vnd.ms-powerpoint")
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TypePptx = newType("pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation")
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)
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var Document = Map{
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TypeDoc: Doc,
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TypeDocx: Docx,
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TypeXls: Xls,
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TypeXlsx: Xlsx,
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TypePpt: Ppt,
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TypePptx: Pptx,
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}
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func Doc(buf []byte) bool {
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return len(buf) > 7 &&
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buf[0] == 0xD0 && buf[1] == 0xCF &&
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buf[2] == 0x11 && buf[3] == 0xE0 &&
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buf[4] == 0xA1 && buf[5] == 0xB1 &&
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buf[6] == 0x1A && buf[7] == 0xE1
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}
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func Docx(buf []byte) bool {
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return len(buf) > 3 &&
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buf[0] == 0x50 && buf[1] == 0x4B &&
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buf[2] == 0x03 && buf[3] == 0x04 &&
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bytes.Contains(buf[:256], []byte(TypeDocx.MIME.Value))
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}
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func Xls(buf []byte) bool {
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return len(buf) > 7 &&
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buf[0] == 0xD0 && buf[1] == 0xCF &&
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buf[2] == 0x11 && buf[3] == 0xE0 &&
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buf[4] == 0xA1 && buf[5] == 0xB1 &&
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buf[6] == 0x1A && buf[7] == 0xE1
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}
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func Xlsx(buf []byte) bool {
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return len(buf) > 3 &&
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buf[0] == 0x50 && buf[1] == 0x4B &&
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buf[2] == 0x03 && buf[3] == 0x04 &&
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bytes.Contains(buf[:256], []byte(TypeXlsx.MIME.Value))
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}
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func Ppt(buf []byte) bool {
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return len(buf) > 7 &&
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buf[0] == 0xD0 && buf[1] == 0xCF &&
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buf[2] == 0x11 && buf[3] == 0xE0 &&
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buf[4] == 0xA1 && buf[5] == 0xB1 &&
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buf[6] == 0x1A && buf[7] == 0xE1
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}
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func Pptx(buf []byte) bool {
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return len(buf) > 3 &&
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buf[0] == 0x50 && buf[1] == 0x4B &&
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buf[2] == 0x07 && buf[3] == 0x08 &&
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bytes.Contains(buf[:256], []byte(TypePptx.MIME.Value))
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}
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