基线:全量源码首提(D1 版本控制落地,含第一轮优化 B1-B4/A1/A4/缩放修复)

2026-10-01 22:15:22 +08:00
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+// ============================================================
+//  SelfTest:命令行自检(--selftest <pdf> [outdir])
+//  无 UI 验证:pdfium 渲染 → PNG 落盘;OCR 工作进程识别 → JSON 落盘
+//  用法:pdfbt.exe --selftest test.pdf .
+//  返回码:0 成功;1 失败
+// ============================================================
+using System;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace pdfbt
+{
+    internal static class SelfTest
+    {
+        public static int Run(string[] args)
+        {
+            string pdf = args[1];
+            string outDir = args.Length >= 3 ? args[2] : ".";
+            var log = new StringBuilder();
+            int exit = 0;
+
+            try
+            {
+                // 1) pdfium 渲染
+                string renderPath = Path.Combine(outDir, "selftest_render.png");
+                Bitmap page;
+                using (var doc = new PdfDocument())
+                {
+                    doc.Open(pdf, null);
+                    log.AppendLine("[render] 打开成功: " + pdf + " 页数=" + doc.PageCount);
+                    page = doc.RenderPage(0, 1.5f);
+                    if (page == null) throw new Exception("渲染返回 null");
+                }
+                using (page)
+                {
+                    page.Save(renderPath, ImageFormat.Png);
+                    log.AppendLine("[render] 已保存: " + renderPath +
+                        " (" + page.Width + "x" + page.Height + ")");
+
+                    // 2) OCR(渲染图上半区)
+                    var crop = new Bitmap(page.Width, page.Height / 2,
+                        System.Drawing.Imaging.PixelFormat.Format24bppRgb);
+                    using (var g = Graphics.FromImage(crop))
+                    {
+                        g.DrawImage(page, new Rectangle(0, 0, crop.Width, crop.Height),
+                            new Rectangle(0, 0, page.Width, page.Height / 2), GraphicsUnit.Pixel);
+                    }
+
+                    using (var ocr = new OcrClient())
+                    {
+                        var items = ocr.RecognizeAsync(crop, 180000).Result;
+                        var json = new StringBuilder();
+                        json.AppendLine("{");
+                        json.AppendLine("  \"count\": " + (items == null ? 0 : items.Count) + ",");
+                        json.AppendLine("  \"items\": [");
+                        if (items != null)
+                        {
+                            for (int i = 0; i < items.Count; i++)
+                            {
+                                var it = items[i];
+                                var b = it.Bounds;
+                                json.AppendLine("    {\"text\": \"" +
+                                    (it.Text ?? "").Replace("\\", "\\\\").Replace("\"", "\\\"") +
+                                    "\", \"score\": " + it.Score.ToString("0.000") +
+                                    ", \"bounds\": [" + b.X.ToString("0") + "," + b.Y.ToString("0") +
+                                    "," + b.Width.ToString("0") + "," + b.Height.ToString("0") + "]}" +
+                                    (i < items.Count - 1 ? "," : ""));
+                            }
+                        }
+                        json.AppendLine("  ]");
+                        json.AppendLine("}");
+                        string ocrPath = Path.Combine(outDir, "selftest_ocr.json");
+                        File.WriteAllText(ocrPath, json.ToString(), new UTF8Encoding(false));
+                        log.AppendLine("[ocr] 识别 " + (items == null ? 0 : items.Count) +
+                            " 条,已保存: " + ocrPath);
+                        if (items != null)
+                        {
+                            foreach (var it in items)
+                                log.AppendLine("    - " + it.Text);
+                        }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                log.AppendLine("[FAIL] " + ex);
+                exit = 1;
+            }
+
+            string resultPath = Path.Combine(outDir, "selftest_result.txt");
+            File.WriteAllText(resultPath, log.ToString(), new UTF8Encoding(false));
+            Console.Out.WriteLine(log.ToString());
+            return exit;
+        }
+    }
+}