fxied bug in tree.py

data/1.C语言初阶/1.C语言概述/3.C语言标准/standard.json

 {
-    "type": "code_options",
-    "author": "幻灰龙",
-    "source": "standard.md"
+  "type": "code_options",
+  "author": "幻灰龙",
+  "source": "standard.md",
+  "exercise_id": "8150ef23aad248f78110f33e34754311"
 }
\ No newline at end of file

data/1.C语言初阶/1.C语言概述/4.编程机制/compiler.json

 {
-    "type": "code_options",
-    "author": "幻灰龙",
-    "source": "compiler.md"
+  "type": "code_options",
+  "author": "幻灰龙",
+  "source": "compiler.md",
+  "exercise_id": "b812499b338541d2955575e56c116da9"
 }
\ No newline at end of file

data/2.C语言中阶/3.指针/config.json

@@ -5,7 +5,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "vla.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/2.C语言中阶/4.字符串/config.json

@@ -5,7 +5,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "pointers_2_func.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/3.C语言高阶/2.联合体与枚举类型/config.json

@@ -7,7 +7,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "linked_list.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/3.C语言高阶/3.位运算/4.十六进制/bin_to_hex.json

 {
-    "type": "code_options",
-    "author": "幻灰龙",
-    "source": "bin_to_hex.md"
+  "type": "code_options",
+  "author": "幻灰龙",
+  "source": "bin_to_hex.md",
+  "exercise_id": "bfae271b73284a6fa5f48bcde4a7f3e0"
 }
\ No newline at end of file

data/3.C语言高阶/3.位运算/5.位逻辑运算符/bit_op.json

 {
-    "type": "code_options",
-    "author": "幻灰龙",
-    "source": "bit_op.md"
+  "type": "code_options",
+  "author": "幻灰龙",
+  "source": "bit_op.md",
+  "exercise_id": "0952044cc5e54770b7418ed868d201a2"
 }
\ No newline at end of file

data/3.C语言高阶/3.位运算/6.对齐特性/pack01.json

 {
-    "type": "code_options",
-    "author": "幻灰龙",
-    "source": "pack01.md"
+  "type": "code_options",
+  "author": "幻灰龙",
+  "source": "pack01.md",
+  "exercise_id": "4aa8ae84487d433e943a5a9ef6293dbd"
 }
\ No newline at end of file

data/3.C语言高阶/3.位运算/6.对齐特性/pack02.json

 {
-    "type": "code_options",
-    "author": "幻灰龙",
-    "source": "pack02.md"
+  "type": "code_options",
+  "author": "幻灰龙",
+  "source": "pack02.md",
+  "exercise_id": "03f964d865b54fe9947e728585a27486"
 }
\ No newline at end of file

data/3.C语言高阶/3.位运算/config.json

@@ -6,7 +6,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "enum.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/3.C语言高阶/5.文件/config.json

@@ -5,7 +5,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "inline01.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/3.C语言高阶/6.存储管理/config.json

@@ -6,7 +6,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "file_hash.json"
-  ]
+  "export": []
 }
\ No newline at end of file

src/tree.py

@@ -37,6 +37,19 @@ def parse_no_name(d):
 
     return no, dir_name
 
+def check_export(base, cfg):
+    flag = False
+    exports = []
+    for export in cfg.get('export', []):
+        ecfg_path = os.path.join(base, export)
+        if os.path.exists(ecfg_path):
+            exports.append(export)
+        else:
+            flag = True
+    if flag:
+        cfg["export"] = exports
+    return flag
+
 
 def gen_tree(data_path):
     root = {}
@@ -54,18 +67,21 @@ def gen_tree(data_path):
                 yield no_dir, no_name
 
     def ensure_id_helper(node):
+        flag = False
         if (node.get('node_id') is None) or node.get('node_id') in id_set:
             node['node_id'] = gen_node_id()   
+            flag = True
 
         id_set.add(node['node_id'])
 
         if 'children' in node:
             for c in node["children"]:
-                ensure_id_helper(list(c.values())[0])
+                flag = flag or ensure_id_helper(list(c.values())[0])
     
-    def ensure_node_id(cfg_path, cfg):
-        ensure_id_helper(cfg)
-        dump_json(cfg_path, cfg, exist_ok=True, override=True)
+        return flag
+
+    def ensure_node_id(cfg):
+        return ensure_id_helper(cfg)
 
     def make_node(name, node_id, keywords, children=None):
         node = {}
@@ -80,7 +96,8 @@ def gen_tree(data_path):
     # 根节点
     cfg_path = os.path.join(data_path, 'config.json')
     cfg = load_json(cfg_path)
-    ensure_node_id(cfg_path, cfg)
+    if ensure_node_id(cfg):
+        dump_json(cfg_path, cfg)
     tree_node = {
         "node_id": cfg['node_id'],
         "keywords": cfg['keywords'],
@@ -92,48 +109,52 @@ def gen_tree(data_path):
     for level_no_dir, level_no_name in list_dir(data_path):
         print(level_no_dir)
         no, level_name = parse_no_name(level_no_name)
-        cfg_path = os.path.join(level_no_dir, 'config.json')
-        cfg = load_json(cfg_path)
-        ensure_node_id(cfg_path, cfg)
+        level_path = os.path.join(level_no_dir, 'config.json')
+        level_cfg = load_json(level_path)
+        if ensure_node_id(level_cfg) or check_export(level_no_dir, level_cfg):
+            dump_json(level_path, level_cfg, exist_ok=True, override=True)
 
         level_node, level_node_children = make_node(
             level_name, cfg['node_id'], cfg['keywords'])
         tree_node['children'].append(level_node)
 
-        
-
         # 章节点
         for chapter_no_dir, chapter_no_name in list_dir(level_no_dir):
             no, chapter_name = parse_no_name(chapter_no_name)
-            cfg_path = os.path.join(chapter_no_dir, 'config.json')
-            ensure_node_id(cfg_path, cfg)
-            cfg = load_json(cfg_path)
+            chapter_path = os.path.join(chapter_no_dir, 'config.json')
+            chapter_cfg = load_json(chapter_path)
+            if ensure_node_id(chapter_cfg) or check_export(chapter_no_dir, chapter_cfg):
+                dump_json(chapter_path, chapter_cfg, exist_ok=True, override=True)
 
             chapter_node, chapter_node_children = make_node(
-                chapter_name, cfg['node_id'], cfg['keywords'])
+                chapter_name, chapter_cfg['node_id'], chapter_cfg['keywords'])
             level_node_children.append(chapter_node)
 
             # 知识点
             for section_no_dir, section_no_name in list_dir(chapter_no_dir):
                 no, section_name = parse_no_name(section_no_name)
-                cfg_path = os.path.join(section_no_dir, 'config.json')
-                cfg = load_json(cfg_path)
-                ensure_node_id(cfg_path, cfg)
+                sec_path = os.path.join(section_no_dir, 'config.json')
+                sec_cfg = load_json(sec_path)
+                flag = ensure_node_id(sec_cfg) or check_export(section_no_dir, sec_cfg)
 
                 section_node, section_node_children = make_node(
-                    section_name, cfg['node_id'], cfg['keywords'], cfg['children'])
+                    section_name, sec_cfg['node_id'], sec_cfg['keywords'], sec_cfg['children'])
                 chapter_node_children.append(section_node)
 
                 # 确保习题分配了习题ID
-                for export in cfg['export']:
+                
+                for export in sec_cfg["export"]:
                     ecfg_path = os.path.join(section_no_dir, export)
                     ecfg = load_json(ecfg_path)
+
                     if (ecfg.get('exercise_id') is None) or (ecfg.get('exercise_id') in id_set):
-                        ecfg['exercise_id'] = uuid.uuid4().hex
+                        ecfg['exercise_id'] = uuid.uuid4().hex     
                         dump_json(ecfg_path, ecfg, exist_ok=True, override=True)
                         
                     id_set.add(ecfg['exercise_id'])
-                dump_json(cfg_path, cfg, exist_ok=True, override=True)
+
+                if flag:
+                    dump_json(cfg_path, cfg, exist_ok=True, override=True)
 
     # 保存技能树骨架
     tree_path = os.path.join(data_path, 'tree.json')