QGIS提升速度

2026-06-21 13:29:19 +08:00
parent fe3ccd005d
commit 5169ed2f33
28 changed files with 444 additions and 394 deletions
@@ -0,0 +1,42 @@
+"""提取模板 .qgs 中所有图层名称、类型、数据源"""
+import zipfile, re, os, sys
+
+template_dir = r"F:\project\xian\xian_algorithm_new\app\data\template\rainfall"
+for fname in sorted(os.listdir(template_dir)):
+    if not fname.endswith('.qgz') or fname.startswith('tmp'):
+        continue
+    path = os.path.join(template_dir, fname)
+    z = zipfile.ZipFile(path)
+    # 找到 .qgs 文件
+    qgs_name = [n for n in z.namelist() if n.endswith('.qgs')][0]
+    content = z.read(qgs_name).decode('utf-8')
+    
+    # 提取 maplayer 块
+    maplayer_re = re.compile(r'<maplayer[^>]*>(.*?)</maplayer>', re.DOTALL)
+    layers = []
+    for m in maplayer_re.finditer(content):
+        block = m.group(1)
+        # 图层名
+        name_m = re.search(r'<layername>([^<]+)</layername>', block)
+        # provider
+        provider_m = re.search(r'<provider[^>]*>(\w+)</provider>', block)
+        # datasource (截取前120字符)
+        ds_m = re.search(r'<datasource>(.*?)</datasource>', block, re.DOTALL)
+        
+        name = name_m.group(1) if name_m else '?'
+        provider = provider_m.group(1) if provider_m else '?'
+        ds = ds_m.group(1).strip()[:120] if ds_m else '?'
+        
+        layers.append((name, provider, ds))
+    
+    print(f"\n{'='*60}")
+    print(f"模板: {fname}")
+    print(f"{'='*60}")
+    for name, provider, ds in layers:
+        print(f"  [{provider:10s}] {name}")
+        if ds:
+            print(f"              ds: {ds}")
+    
+    # 只分析第一个模板（所有 rainfall 模板结构相同）
+    if fname == '暴雨内涝潜在隐患点及人口分布图.qgz':
+        break