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Copy pathoptimize-images.sh
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147 lines (131 loc) · 4.13 KB
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#!/bin/bash
# 统一图片优化脚本
# 整合了图片压缩、WebP 转换、大图片检测功能
# 用法: ./scripts/optimize-images.sh [--webp] [--compress] [--check]
set -e
# 颜色输出
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'
# 配置
IMG_DIRS=("images" "img")
QUALITY=80
BACKUP_DIR="images-backup-$(date +%Y%m%d-%H%M%S)"
log() { echo -e "${GREEN}✅ $1${NC}"; }
warn() { echo -e "${YELLOW}⚠️ $1${NC}"; }
info() { echo -e "${BLUE}📌 $1${NC}"; }
error() { echo -e "${RED}❌ $1${NC}"; }
# 创建备份
create_backup() {
info "创建图片备份到 $BACKUP_DIR"
mkdir -p "$BACKUP_DIR"
for dir in "${IMG_DIRS[@]}"; do
if [ -d "$dir" ]; then
cp -r "$dir" "$BACKUP_DIR/" 2>/dev/null || true
fi
done
log "备份完成"
}
# 检查大图片
check_large_images() {
info "查找大于 500KB 的图片..."
local found=false
for dir in "${IMG_DIRS[@]}"; do
if [ -d "$dir" ]; then
while IFS= read -r file; do
if [ -n "$file" ]; then
found=true
size=$(du -h "$file" | cut -f1)
echo " $file ($size)"
fi
done < <(find "$dir" -type f \( -name "*.jpg" -o -name "*.jpeg" -o -name "*.png" \) -size +500k 2>/dev/null)
fi
done
if [ "$found" = false ]; then
log "没有发现大于 500KB 的图片"
fi
}
# 创建 WebP 版本
convert_to_webp() {
if ! command -v cwebp &> /dev/null; then
warn "cwebp 未安装，跳过 WebP 转换"
info "安装方法: brew install webp (macOS) 或 apt-get install webp (Linux)"
return
fi
info "开始 WebP 转换 (质量: $QUALITY)..."
local count=0
for dir in "${IMG_DIRS[@]}"; do
if [ -d "$dir" ]; then
while IFS= read -r file; do
local webp="${file%.*}.webp"
if [ ! -f "$webp" ] || [ "$file" -nt "$webp" ]; then
cwebp -q "$QUALITY" "$file" -o "$webp" 2>/dev/null && ((count++)) || true
fi
done < <(find "$dir" -type f \( -name "*.jpg" -o -name "*.jpeg" -o -name "*.png" \) 2>/dev/null)
fi
done
log "创建了 $count 个 WebP 文件"
}
# 使用 ImageMagick 压缩
compress_with_imagemagick() {
if ! command -v convert &> /dev/null; then
warn "ImageMagick 未安装，跳过压缩"
info "安装方法: brew install imagemagick (macOS)"
return
fi
info "开始图片压缩 (质量: 75%)..."
local count=0
local total_saved=0
for dir in "${IMG_DIRS[@]}"; do
if [ -d "$dir" ]; then
while IFS= read -r file; do
original_size=$(du -k "$file" | cut -f1)
convert "$file" -quality 75 -strip "$file" 2>/dev/null || continue
new_size=$(du -k "$file" | cut -f1)
saved=$((original_size - new_size))
total_saved=$((total_saved + saved))
((count++))
done < <(find "$dir" -type f \( -name "*.jpg" -o -name "*.jpeg" -o -name "*.png" \) 2>/dev/null)
fi
done
log "压缩了 $count 张图片，节省 ${total_saved}KB"
}
# 显示统计
show_stats() {
echo ""
info "图片统计:"
echo "============"
local total=0
for dir in "${IMG_DIRS[@]}"; do
if [ -d "$dir" ]; then
count=$(find "$dir" -type f \( -name "*.jpg" -o -name "*.jpeg" -o -name "*.png" -o -name "*.gif" -o -name "*.webp" \) 2>/dev/null | wc -l | tr -d ' ')
total=$((total + count))
fi
done
echo "总图片数: $total"
du -sh "${IMG_DIRS[@]}" 2>/dev/null | while read size dir; do
echo " $dir: $size"
done
}
# 主流程
main() {
echo -e "${GREEN}🖼️ 图片优化脚本${NC}"
echo "=================="
echo ""
create_backup
check_large_images
# 解析参数
if [[ "$1" == "--compress" ]]; then
compress_with_imagemagick
fi
if [[ "$1" == "--webp" || -z "$1" ]]; then
convert_to_webp
fi
show_stats
echo ""
log "图片优化完成！"
info "备份位置: $BACKUP_DIR"
}
main "$@"