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main.go
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main.go
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package main
import (
"bytes"
"flag"
"log"
"os"
"github.com/masterZSH/grayImage/pkg/fs"
"github.com/masterZSH/grayImage/pkg/img"
)
var (
h bool
inputName, outputName string
)
func init() {
flag.BoolVar(&h, "h", false, "输出帮助")
flag.StringVar(&inputName, "i", "", "需要转换的图片")
flag.StringVar(&outputName, "o", "", "输出的图片名称")
}
func main() {
flag.Parse()
if h {
flag.Usage()
os.Exit(0)
}
if len(inputName) == 0 {
log.Fatal("使用-i加图片输入灰色处理的图片\n")
}
if _, err := img.CheckImage(inputName); err != nil {
log.Fatal(err)
}
if len(outputName) == 0 {
var buffer bytes.Buffer
buffer.WriteString("gray")
buffer.WriteString(inputName)
outputName = buffer.String()
}
imageReader := fs.ReadFile(inputName)
image := img.Gray(imageReader)
img.WriteImage(outputName, image)
}