/
fast.go
79 lines (66 loc) · 1.31 KB
/
fast.go
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package main
import (
"bench/data"
"bufio"
"fmt"
"io"
"os"
"strings"
)
func FastSearch(out io.Writer) {
file, err := os.Open(filePath)
if err != nil {
panic(err)
}
defer file.Close()
reader := bufio.NewReader(file)
seenBrowsers := make([]string, 0)
isSeenBefore := func(browser string) bool {
for _, item := range seenBrowsers {
if item == browser {
return true
}
}
return false
}
var (
id int
user = new(data.User)
)
fmt.Fprintln(out, "found users:")
for {
line, err := reader.ReadString('\n')
if err != nil {
if err == io.EOF {
break
} else {
panic(err)
}
}
err = user.UnmarshalJSON([]byte(line))
if err != nil {
panic(err)
}
var isAndroid, isMSIE bool
for _, browser := range user.Browsers {
okAndroid := strings.Contains(browser, "Android")
if okAndroid {
isAndroid = true
}
okMSIE := strings.Contains(browser, "MSIE")
if okMSIE {
isMSIE = true
}
if (okAndroid || okMSIE) && !isSeenBefore(browser) {
seenBrowsers = append(seenBrowsers, browser)
}
}
if isAndroid && isMSIE {
email := strings.ReplaceAll(user.Email, "@", " [at] ")
foundUser := fmt.Sprintf("[%d] %s <%s>\n", id, user.Name, email)
fmt.Fprint(out, foundUser)
}
id++
}
fmt.Fprintln(out, "\nTotal unique browsers", len(seenBrowsers))
}