SoFunction
Updated on 2025-03-01

GO language implements batch compression of pictures and watermarks


package main
import (
    "fmt"
    "/nfnt/resize"
    "image"
    "image/draw"
    "image/jpeg"
    "image/png"
    "io/ioutil"
    "log"
    "math/rand"
    "os"
    "runtime"
    "strconv"
    "strings"
    "time"
)
func main() {
    (())
    cmd("data/")
    ("OK!")
}
// Perform an operation
func cmd(path string) {
    files, _ := (path)
    for _, file := range files {
        if () {
("Directory" + ())
            cmd(path + () + "/")
        } else {
            if ((()), ".jpg") {
// Random name
                to := path + random_name() + ".jpg"
                origin := path + ()
("Processing" + origin + ">>>" + to)
                cmd_resize(origin, 2048, 0, to)
                defer (origin)
            }
        }
    }
}
// Change the size
func cmd_resize(file string, width uint, height uint, to string) {
// Open the picture and decode it
    file_origin, _ := (file)
    origin, _ := (file_origin)
    defer file_origin.Close()
    canvas := (width, height, origin, resize.Lanczos3)
    file_out, err := (to)
    if err != nil {
        (err)
    }
    defer file_out.Close()
    (file_out, canvas, &{80})
    // cmd_watermark(to, (to, ".jpg", "@", 1))
    cmd_thumbnail(to, 480, 360, (to, ".jpg", "@", 1))
}
func cmd_thumbnail(file string, width uint, height uint, to string) {
// Open the picture and decode it
    file_origin, _ := (file)
    origin, _ := (file_origin)
    defer file_origin.Close()
    canvas := (width, height, origin, resize.Lanczos3)
    file_out, err := (to)
    if err != nil {
        (err)
    }
    defer file_out.Close()
    (file_out, canvas, &{80})
}
// Watermark
func cmd_watermark(file string, to string) {
// Open the picture and decode it
    file_origin, _ := (file)
    origin, _ := (file_origin)
    defer file_origin.Close()
// Open the watermark image and decode it
    file_watermark, _ := ("")
    watermark, _ := (file_watermark)
    defer file_watermark.Close()
//Original graph boundaries
    origin_size := ()
//Create a new layer
    canvas := (origin_size)
// Post original picture
    (canvas, origin_size, origin, , )
// Watermark image
    (canvas, ().Add((30, 30)), watermark, , )
//Generate new pictures
    create_image, _ := (to)
    (create_image, canvas, &{95})
    defer create_image.Close()
}
// Randomly generate file names
func random_name() string {
    (().UnixNano())
    return (())
}