Initial Commit

s4e-icons/tools/locate_payload_in_face.py

@@ -0,0 +1,49 @@
+"""在编好的 .face 里定位每一份负载，好让 Lua 运行时按偏移从 resource.bin 里读出来
+（设备不会把 .face 里的 images/ 解包到文件系统，图片仍然躺在 resource.bin 里）。
+"""
+import os, sys, json
+from paths import PROJ, WORK
+
+FACE = os.path.join(WORK, 'build', 'S5Icons', 'bin', 'S5Icons.face')
+PDIR = os.path.join(PROJ, 'payload')
+RDIR = os.path.join(PROJ, 'payload_rollback')
+OUT = os.path.join(WORK, 'face_payload_offsets.json')
+
+face = open(FACE, 'rb').read()
+print(f'face {os.path.basename(FACE)}  {len(face)} bytes')
+
+anchor = face.find(b'local lvgl = require("lvgl")')
+print(f'lua source starts at 0x{anchor:x} ({anchor})')
+
+out = {}
+for tag, d in (('payload', PDIR), ('rollback', RDIR)):
+    recs = []
+    dup = 0
+    for name in sorted(os.listdir(d)):
+        if not name.endswith('.bin') or name.endswith('payload.lua'):
+            continue
+        data = open(os.path.join(d, name), 'rb').read()
+        if not data:
+            continue
+        hits, start = [], 0
+        while True:
+            i = face.find(data, start)
+            if i < 0:
+                break
+            hits.append(i)
+            start = i + 1
+            if len(hits) > 8:
+                break
+        recs.append((name, len(data), hits, data[:16].hex()))
+        if len(hits) != 1:
+            dup += 1
+    out[tag] = recs
+    print(f'\n{tag}: {len(recs)} files, {dup} with !=1 occurrence')
+    for name, ln, hits, sig in recs[:6]:
+        print(f'   {name:<34} {ln:>7}  hits={[hex(h) for h in hits]}')
+    if recs:
+        print('   ...')
+
+json.dump({k: [(n, l, h, s) for n, l, h, s in v] for k, v in out.items()},
+          open(OUT, 'w', encoding='utf-8'), indent=1)
+print('\nsaved', OUT)