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71 lines
1.3 KiB
71 lines
1.3 KiB
package main
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import (
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"bufio"
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"fmt"
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"os"
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"regexp"
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"strconv"
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)
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// (2022-07-08 16:54:15.587099) can0 100 [8] 00 00 00 00 00 00 64 00
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const expr = "\\((.*)\\)\\s+can\\d+\\s+(\\d+)\\s+\\[\\d\\]\\s+([A-F0-9]+)\\s+([A-F0-9]+)\\s+([A-F0-9]+)\\s+([A-F0-9]+)\\s+([A-F0-9]+)\\s+([A-F0-9]+)\\s+([A-F0-9]+)\\s+([A-F0-9]+)"
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const length = 11
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var pattern = regexp.MustCompile(expr)
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func Readfile(filename *string) <-chan *CanFrame {
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c := make(chan *CanFrame)
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go func() {
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defer close(c)
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file, err := os.Open(*filename)
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if err != nil {
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fmt.Println(err)
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return
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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text := scanner.Text()
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c <- fromString(&text)
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}
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if err := scanner.Err(); err != nil {
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fmt.Println(err)
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}
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}()
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return c
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}
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func fromString(text *string) *CanFrame {
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submatch := pattern.FindStringSubmatch(*text)
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if len(submatch) == length {
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canid, err := strconv.ParseUint(submatch[2], 16, 0)
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if err != nil {
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return nil
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}
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payload := make([]uint8, 8)
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for idx, octet := range submatch[3:] {
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val, err := strconv.ParseUint(octet, 16, 0)
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if err != nil {
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fmt.Println(err)
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continue
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}
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payload[idx] = uint8(val)
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}
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return &CanFrame{
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date: submatch[1],
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canid: uint32(canid),
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payload: payload,
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}
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}
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return nil
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}
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