compress images in some directory using tinypng service 使用 tinypng 来压缩图片

compressImage.sh

#!/bin/bash
# author: wang_liang@corp.netease.com

log_info() {
  printf "[\e[36m%s\e[0m] [\e[32mINFO\e[0m] $*\n\r" "$(date +'%H:%M:%S')"
}

log_warn() {
  printf "[\e[36m%s\e[0m] [\e[33mWARNING\e[0m] $*\n\r" "$(date +'%H:%M:%S')"
}

log_error() {
  printf "[\e[36m%s\e[0m] [\e[91mERROR\e[0m] $*\n\r" "$(date +'%H:%M:%S')"
}

function help()
{
  log_error "输入目标路径或者图片地址， sh ./compressImages.sh fileNameOrDirectory"
  exit 1
}

if [ $# -eq 0 ]
  then
    help
fi

api_key="1Sf6MzPVoDFUqvhRqeuQ8GkwNKODPoJx"
API_LIMIT=500

process_image() {
  if [[ $1 != *.png ]]; then
    log_info "非图片文件，跳过:"$1
    return
  fi

  t=$(ls -l "$1" | awk '{print $5}')
  orig_size=$((t / 1024))

  if [ "$orig_size" -gt 1024 ]; then
    orig_size_display="$(printf "%0.2f\n" "$(awk "BEGIN {print ($orig_size)/1024}")") MB"
  else
    orig_size_display="$orig_size KB"
  fi

  log_info "Compressing \"$1\".... (${orig_size_display}) \n"
  curl --progress-bar --user api:"$api_key" --data-binary @"$1" --output api_response.txt -i https://api.tinify.com/shrink
  if [ -f api_response.txt ]; then
    status_code=$(head <api_response.txt -1 | awk '{print $2}')
  else
    status_code="-1"
  fi
  
  if [ "$status_code" != 201 ]; then
    log_warn "Something went wrong! Error code: $status_code Retrying....\n"
    # if [ -f api_response.txt ]; then
    #   rm api_response.txt 2>/dev/null
    # fi
    continue
  fi

  download_url=`grep <api_response.txt location | awk '{print $2}'`
  compression_count="$(grep <api_response.txt compression-count | awk '{print $2}')"
  compression_count=${compression_count%$'\r'}
  log_info "Total API Requests: $compression_count/$API_LIMIT"
  if [ "$compression_count" -gt "$((API_LIMIT - 1))" ]; then
    log_error "API Limit Reached! Exiting....\n"
    rm api_response.txt
    exit 1
  fi
# # 覆盖原来的文件
  curl ${download_url%$'\r'}  --progress-bar --user api:"$api_key" --header "Content-Type: application/json" --data '{ "preserve": ["location", "creation"] }' --output "$1"
  new_size="$(ls -l "$1" | awk '{print $5}')"
  if [ "$new_size" = "" ]; then
    new_size=1
  fi
  new_size="$((new_size / 1024))"
  if [ "$new_size" -gt 1024 ]; then
    new_size_display="$(printf "%0.2f\n" "$(awk "BEGIN {print ($new_size)/1024}")") MB"
  else
    new_size_display="$new_size KB"
  fi
  log_info "Done compressing \"$1\" (${new_size_display})\n"
  rm api_response.txt
  echo ""
}

function read_dir(){
    ls $1 | while read FILE; do
      file="$1/$FILE"
      if [ -d "$file" ]  #注意此处之间一定要加上空格，否则会报错
      then
          read_dir "$file"
      else
          # echo $file   #在此处处理文件即可
          process_image "$file"
      fi
    done
}   

# 读取命令行参数
for f in "$@"
do
  if [ -d "$f" ]
    then
        read_dir "$f"
    else
        # echo $file   #在此处处理文件即可
        process_image "$f"
    fi
done

afplay /System/Library/Sounds/Submarine.aiff

验证压缩是否正确需要人眼检查