refactor(pdf_parse): improve code readability and maintainability

magic_pdf/pdf_parse_union_core_v2.py

@@ -89,29 +89,29 @@ def __replace_STX_ETX(text_str: str):
 
 
 def chars_to_content(span):
-        # # 先给chars按char['bbox']的x坐标排序
-        # span['chars'] = sorted(span['chars'], key=lambda x: x['bbox'][0])
-
-        # 先给chars按char['bbox']的中心点的x坐标排序
-        span['chars'] = sorted(span['chars'], key=lambda x: (x['bbox'][0] + x['bbox'][2]) / 2)
-        content = ''
-
-        # 求char的平均宽度
-        if len(span['chars']) == 0:
-            span['content'] = content
-            del span['chars']
-            return
-        else:
-            char_width_sum = sum([char['bbox'][2] - char['bbox'][0] for char in span['chars']])
-            char_avg_width = char_width_sum / len(span['chars'])
-
-        for char in span['chars']:
-            # 如果下一个char的x0和上一个char的x1距离超过一个字符宽度，则需要在中间插入一个空格
-            if char['bbox'][0] - span['chars'][span['chars'].index(char) - 1]['bbox'][2] > char_avg_width:
-                content += ' '
-            content += char['c']
-        span['content'] = __replace_STX_ETX(content)
+    # # 先给chars按char['bbox']的x坐标排序
+    # span['chars'] = sorted(span['chars'], key=lambda x: x['bbox'][0])
+
+    # 先给chars按char['bbox']的中心点的x坐标排序
+    span['chars'] = sorted(span['chars'], key=lambda x: (x['bbox'][0] + x['bbox'][2]) / 2)
+    content = ''
+
+    # 求char的平均宽度
+    if len(span['chars']) == 0:
+        span['content'] = content
         del span['chars']
+        return
+    else:
+        char_width_sum = sum([char['bbox'][2] - char['bbox'][0] for char in span['chars']])
+        char_avg_width = char_width_sum / len(span['chars'])
+
+    for char in span['chars']:
+        # 如果下一个char的x0和上一个char的x1距离超过一个字符宽度，则需要在中间插入一个空格
+        if char['bbox'][0] - span['chars'][span['chars'].index(char) - 1]['bbox'][2] > char_avg_width:
+            content += ' '
+        content += char['c']
+    span['content'] = __replace_STX_ETX(content)
+    del span['chars']
 
 
 LINE_STOP_FLAG = ('.', '!', '?', '。', '！', '？', ')', '）', '"', '”', ':', '：', ';', '；', ']', '】', '}', '}', '>', '》', '、', ',', '，', '-', '—', '–',)