From d474e033450217a89ebbef6dcaa737e21b25fa23 Mon Sep 17 00:00:00 2001
From: pjp8glqzm <3795440669@qq.com>
Date: Mon, 20 Jan 2025 18:05:36 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BB=A3=E7=A0=81=E6=96=87=E4=BB=B6?=
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---
 PDFReader.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 PDFReader.h

diff --git a/PDFReader.h b/PDFReader.h
new file mode 100644
index 0000000..f6afc94
--- /dev/null
+++ b/PDFReader.h
@@ -0,0 +1,49 @@
+#ifndef PDFREADER_H
+#define PDFREADER_H
+
+#include <iostream>
+#include <fstream>
+#include <vector>
+#include <string>
+#include <map>
+// 解析 FlateDecode
+#include <zlib.h>  
+// 解析 JPEG (DCTDecode)
+#include <jpeglib.h> 
+
+// PDF 解析类
+class PDFReader {
+public:
+    PDFReader(const std::string& filepath);
+    ~PDFReader();
+
+    std::string parseHeader();
+
+    void parseXRefTable();
+
+    std::string extractText();
+
+    void listPDFObjects();
+
+    void extractImages();  // 解析 DCTDecode (JPEG) 图片
+
+    void parseFlateDecode();  // 解析压缩流数据
+
+    void parseTables();  // 解析表格
+
+    void renderPDF();  // 绘制 PDF 页面
+
+private:
+    std::ifstream file;
+
+    std::map<int, std::streampos> objectOffsets;
+
+    std::string readBytes(std::streampos position, size_t length);
+
+    void findObjects();
+
+    std::string parseStream(std::streampos start, size_t length);
+
+};
+
+#endif // PDFREADER_H