70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package cmd
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import (
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"fmt"
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"github.com/disintegration/imaging"
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"github.com/spf13/cobra"
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"log"
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"os"
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"path/filepath"
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"regexp"
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"time"
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)
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// imageCmd represents the image command
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var (
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imageCmd = &cobra.Command{
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Use: "image",
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Short: "A tool for processing images to my desired format, size and naming",
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Run: func(cmd *cobra.Command, args []string) {
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if source == "" {
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log.Fatalf("The source should be provided")
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}
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if !localDatePattern.Match([]byte(localDate)) {
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log.Fatalf("This is an invalid local date format %s", localDate)
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}
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process()
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},
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}
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width = 1280
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source = ""
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output = executablePath()
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localDate = time.Now().Format("20060102")
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localDatePattern = regexp.MustCompile("^\\d{8}$")
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)
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func init() {
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imageCmd.Flags().StringVarP(&source, "source", "", "", "The image file path (absolute of relative) that you want to process")
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imageCmd.Flags().StringVarP(&output, "output", "", output, "The output path")
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imageCmd.Flags().IntVarP(&width, "width", "", 1280, "The compressed width for the given image")
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imageCmd.Flags().StringVarP(&localDate, "local", "", localDate, "The local date time, in yyyyMMdd format")
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rootCmd.AddCommand(imageCmd)
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}
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func executablePath() string {
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ex, _ := os.Executable()
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return filepath.Dir(ex)
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}
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func process() {
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// Open a test image.
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src, err := imaging.Open(source)
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if err != nil {
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log.Fatalf("failed to open image: %v", err)
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}
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// Resize the cropped image to width = 200px preserving the aspect ratio.
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src = imaging.Resize(src, width, 0, imaging.Lanczos)
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// Save the resulting image as JPEG.
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target := localDate + time.Now().Format("150405") + fmt.Sprintf("%02d", time.Now().Nanosecond()%100) + ".jpg"
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err = imaging.Save(src, filepath.Join(output, target))
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if err != nil {
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log.Fatalf("failed to save image: %v", err)
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}
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}
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