122 lines
3.3 KiB
Bash
122 lines
3.3 KiB
Bash
#!/bin/bash
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# 检查并安装 pdftk
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check_install_pdftk() {
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if ! command -v pdftk &> /dev/null; then
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echo "未检测到 pdftk，正在尝试安装..."
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# 检测操作系统类型
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if [ -f /etc/os-release ]; then
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. /etc/os-release
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case "$ID" in
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ubuntu|debian)
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sudo apt-get update && sudo apt-get install -y pdftk
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;;
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fedora)
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sudo dnf install -y pdftk
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;;
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centos|rhel)
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sudo yum install -y pdftk
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;;
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*)
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echo "无法确定操作系统类型，请手动安装 pdftk"
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exit 1
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;;
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esac
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elif [ "$(uname)" == "Darwin" ]; then
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# macOS
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if command -v brew &> /dev/null; then
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brew install pdftk-java
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else
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echo "请先安装 Homebrew，然后再安装 pdftk"
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echo "安装 Homebrew: /bin/bash -c \"\$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)\""
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exit 1
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fi
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else
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echo "不支持的操作系统，请手动安装 pdftk"
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exit 1
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fi
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# 再次检查安装是否成功
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if ! command -v pdftk &> /dev/null; then
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echo "pdftk 安装失败，请手动安装"
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exit 1
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fi
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echo "pdftk 安装成功！"
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fi
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}
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# 在开始处理之前检查并安装 pdftk
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check_install_pdftk
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# 检查是否使用 --keep-temp 参数
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KEEP_TEMP=false
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args=()
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for arg in "$@"; do
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if [ "$arg" == "--keep-temp" ]; then
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KEEP_TEMP=true
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else
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args+=("$arg")
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fi
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done
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# 参数校验
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if [ "${#args[@]}" -eq 0 ]; then
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echo "使用方法: $0 [PDF文件1] [PDF文件2] ... [--keep-temp]"
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exit 1
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fi
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# 开始处理多个文件
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for PDF_FILE in "${args[@]}"; do
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if [ ! -f "$PDF_FILE" ]; then
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echo "文件不存在: $PDF_FILE"
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continue
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fi
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if [[ ! "$PDF_FILE" =~ \.pdf$ ]]; then
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echo "不是 PDF 文件，跳过: $PDF_FILE"
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continue
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fi
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TEMP_FILE="temp_$PDF_FILE"
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OUTPUT_FILE="clean_$PDF_FILE"
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if [ -f "$OUTPUT_FILE" ]; then
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echo "文件 $OUTPUT_FILE 已存在，跳过处理。"
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continue
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fi
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echo "解压 PDF: $PDF_FILE"
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if ! pdftk "$PDF_FILE" output "$TEMP_FILE" uncompress; then
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echo "PDF 解压失败: $PDF_FILE"
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continue
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fi
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echo "清除水印中: '$PDF_FILE'"
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perl -pe '
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s/\(\x00\x32\x00\x37\x00\x30\x00\x35\x00\x35\x00\x38\x00\x20\x52\x18f%i`\)Tj//g;
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s/\(\x00\x15\x00\x1a\x00\x13\x00\x18\x00\x18\x00\x1b\x00\x03\\bN\x1C\[\x1F\x96\)Tj//g;
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' "$TEMP_FILE" > "${TEMP_FILE}.tmp"
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if [ ! -f "${TEMP_FILE}.tmp" ]; then
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echo "未生成中间文件，跳过: $PDF_FILE"
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rm -f "$TEMP_FILE"
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continue
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fi
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mv "${TEMP_FILE}.tmp" "$TEMP_FILE"
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echo "重新压缩生成: $OUTPUT_FILE"
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if ! pdftk "$TEMP_FILE" output "$OUTPUT_FILE" compress; then
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echo "PDF 压缩失败: $PDF_FILE"
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rm -f "$TEMP_FILE"
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continue
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fi
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if [ "$KEEP_TEMP" = false ]; then
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rm -f "$TEMP_FILE"
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else
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echo "保留临时文件: $TEMP_FILE"
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fi
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echo "处理完成: $OUTPUT_FILE"
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done |