清理：删除 RDP 时代文档与临时截图/缓存/.zcode；纳管正式产品 Word、VDD 安装资产、对比记录与 PVE 运维工具脚本

tools/xwd2png.py

@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+"""Convert an XWD dump (from xwd) into a PNG, without external image libraries.
+
+Usage: xwd -root -silent | python3 xwd2png.py out.png
+"""
+import struct
+import sys
+import zlib
+
+
+def read_header(data):
+    fields = struct.unpack(">25I", data[:100])
+    names = [
+        "header_size", "file_version", "pixmap_format", "pixmap_depth",
+        "pixmap_width", "pixmap_height", "xoffset", "byte_order",
+        "bitmap_unit", "bitmap_bit_order", "bitmap_pad", "bits_per_pixel",
+        "bytes_per_line", "visual_class", "red_mask", "green_mask",
+        "blue_mask", "bits_per_rgb", "colormap_entries", "ncolors",
+        "window_width", "window_height", "window_x", "window_y",
+        "window_bdrwidth",
+    ]
+    return dict(zip(names, fields))
+
+
+def write_png(path, width, height, rgb_rows):
+    raw = b"".join(b"\x00" + row for row in rgb_rows)
+
+    def chunk(tag, payload):
+        return (struct.pack(">I", len(payload)) + tag + payload +
+                struct.pack(">I", zlib.crc32(tag + payload) & 0xFFFFFFFF))
+
+    header = struct.pack(">IIBBBBB", width, height, 8, 2, 0, 0, 0)
+    png = (b"\x89PNG\r\n\x1a\n" + chunk(b"IHDR", header) +
+           chunk(b"IDAT", zlib.compress(raw, 6)) + chunk(b"IEND", b""))
+    with open(path, "wb") as handle:
+        handle.write(png)
+
+
+def main():
+    out_path = sys.argv[1] if len(sys.argv) > 1 else "out.png"
+    data = sys.stdin.buffer.read()
+    head = read_header(data)
+    width = head["pixmap_width"]
+    height = head["pixmap_height"]
+    bpp = head["bits_per_pixel"]
+    stride = head["bytes_per_line"]
+    offset = head["header_size"] + head["ncolors"] * 12
+    pixels = data[offset:]
+
+    if bpp == 32:
+        rows = []
+        for y in range(height):
+            line = pixels[y * stride:y * stride + width * 4]
+            out = bytearray(width * 3)
+            for x in range(width):
+                src = x * 4
+                dst = x * 3
+                out[dst] = line[src + 2]
+                out[dst + 1] = line[src + 1]
+                out[dst + 2] = line[src]
+            rows.append(bytes(out))
+    elif bpp == 24:
+        rows = []
+        for y in range(height):
+            line = pixels[y * stride:y * stride + width * 3]
+            out = bytearray(width * 3)
+            for x in range(width):
+                src = x * 3
+                dst = x * 3
+                out[dst] = line[src + 2]
+                out[dst + 1] = line[src + 1]
+                out[dst + 2] = line[src]
+            rows.append(bytes(out))
+    else:
+        sys.stderr.write("unsupported bits_per_pixel=%s\n" % bpp)
+        return 2
+
+    write_png(out_path, width, height, rows)
+    print("%s %dx%d" % (out_path, width, height))
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())