73 lines
1.2 KiB
Go
73 lines
1.2 KiB
Go
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package main
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import (
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"bufio"
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"os"
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"strconv"
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)
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func LoadData(path string) []DataEntry {
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readFile, err := os.Open(path)
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checkErr(err)
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fileScanner := bufio.NewScanner(readFile)
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fileScanner.Split(bufio.ScanLines)
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var fileLines []string
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for fileScanner.Scan() {
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fileLines = append(fileLines, fileScanner.Text())
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}
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err = readFile.Close()
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checkErr(err)
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var data []DataEntry
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lastData := 0
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for _, line := range fileLines {
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toInt, err := strconv.Atoi(line)
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status := Nothing
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checkErr(err)
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switch {
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case lastData == 0:
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status = Nothing
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case lastData < toInt:
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status = Increased
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case lastData > toInt:
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status = Decreased
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case lastData == toInt:
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status = Equal
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}
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lastData = toInt
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data = append(data, DataEntry{
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Value: toInt,
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Status: status,
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})
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}
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return data
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}
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type Status int
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const (
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Nothing Status = iota
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Decreased
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Increased
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Equal
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)
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func (s Status) String() string {
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switch s {
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case Nothing:
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return "N/A - no previous measurement"
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case Increased:
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return "increased"
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case Decreased:
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return "decreased"
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case Equal:
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return "equal"
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default:
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return ""
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}
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}
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type DataEntry struct {
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Value int
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Status Status
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}
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