Extract location data from the srt files.

[Prajwal-Koirala]

package main

import (
    "fmt"
    "strconv"
    "strings"
)

func main() {
    str := "[iso: 110] [shutter: 1/1250.0] [fnum: 2.8] [ev: 0] [ct: 5480] [color_md : default] [focal_len: 24.00] [latitude: 40.73069] [longitude: -73.84002] [rel_alt: 72.400 abs_alt: 79.206] </font>"

    latIndex := strings.Index(str, "latitude:") // find the index of "latitude:" in the string
    if latIndex == -1 {
        fmt.Println("No latitude found in the string")
        return
    }
    latIndex += len("latitude:") // adjust the index to the end of "latitude:"

    lonIndex := strings.Index(str, "longitude:") // find the index of "longitude:" in the string
    if lonIndex == -1 {
        fmt.Println("No longitude found in the string")
        return
    }

    latStr := strings.TrimSpace(str[latIndex:lonIndex]) // extract the latitude string
    if idx := strings.IndexByte(latStr, ']'); idx != -1 {
        latStr = latStr[:idx]
    }

    lonStr := strings.TrimSpace(str[lonIndex+len("longitude:"):]) // extract the longitude string
    if idx := strings.IndexByte(lonStr, ']'); idx != -1 {
        lonStr = lonStr[:idx]
    }

    lat, err := strconv.ParseFloat(latStr, 64)
    if err != nil {
        fmt.Println("Error parsing latitude:", err)
        return
    }

    lon, err := strconv.ParseFloat(lonStr, 64)
    if err != nil {
        fmt.Println("Error parsing longitude:", err)
        return
    }

    fmt.Printf("Latitude: %f, Longitude: %f\n", lat, lon)
}