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32 lines
702 B
Go
32 lines
702 B
Go
package parser
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import (
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"bytes"
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"errors"
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)
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var (
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// FIT file signature
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fitSignature = []byte{0x0E, 0x10} // .FIT files start with 0x0E 0x10
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)
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// DetectFileType detects the file type based on its content
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func DetectFileType(data []byte) (string, error) {
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// Check FIT file signature
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if len(data) >= 2 && bytes.Equal(data[:2], fitSignature) {
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return ".fit", nil
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}
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// Check TCX file signature (XML with TrainingCenterDatabase root)
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if bytes.Contains(data, []byte("<TrainingCenterDatabase")) {
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return ".tcx", nil
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}
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// Check GPX file signature (XML with <gpx> root)
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if bytes.Contains(data, []byte("<gpx")) {
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return ".gpx", nil
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}
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return "", errors.New("unrecognized file format")
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}
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