forked from vieter-v/vieter
35 lines
977 B
V
35 lines
977 B
V
module util
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import os
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import crypto.md5
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import crypto.sha256
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// hash_file returns the md5 & sha256 hash of a given file
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// TODO actually implement sha256
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pub fn hash_file(path &string) ?(string, string) {
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file := os.open(path) or { return error('Failed to open file.') }
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mut md5sum := md5.new()
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mut sha256sum := sha256.new()
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buf_size := int(1_000_000)
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mut buf := []byte{len: buf_size}
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mut bytes_left := os.file_size(path)
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for bytes_left > 0 {
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// TODO check if just breaking here is safe
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bytes_read := file.read(mut buf) or { return error('Failed to read from file.') }
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bytes_left -= u64(bytes_read)
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// For now we'll assume that this always works
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md5sum.write(buf[..bytes_read]) or {
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return error('Failed to update md5 checksum. This should never happen.')
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}
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sha256sum.write(buf[..bytes_read]) or {
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return error('Failed to update sha256 checksum. This should never happen.')
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}
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}
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return md5sum.checksum().hex(), sha256sum.checksum().hex()
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}
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