如何将含多行值的Debian control文件转换为JSON？

尝试用Python将Debian control文件转换为JSON格式，该文件中存在像Build-Depends这类值跨多行的键值对。现有代码处理时，因为换行的行不含冒号，抛出ValueError，需要修改代码让Build-Depends的多行内容作为对应键的完整值。

现有代码 #

import json
filename = 'thunar-volman/debian/control'
dict1 = {}
with open(filename) as fh:
    for line in fh:
        print(line)
        command, description = line.strip().split(': ')
        print(command)
        print(description)
        dict1[command.strip()] = description.strip()

with open("test.json", "w") as out_file:
    json.dump(dict1, out_file, indent=4, sort_keys = False)

错误信息 #

Build-Depends
debhelper-compat (= 13),
               intltool,

Traceback (most recent call last):
  File "read.py", line 7, in <module>
    command, description = line.strip().split(': ')
ValueError: not enough values to unpack (expected 2, got 1)

核心思路是跟踪当前正在处理的键，当遇到以缩进开头的行时，将内容追加到前一个键的值中。修改后的代码如下：

import json

filename = 'thunar-volman/debian/control'
control_dict = {}
current_key = None

with open(filename, 'r', encoding='utf-8') as fh:
    for line in fh:
        stripped_line = line.strip()
        # 跳过空行
        if not stripped_line:
            continue
        # 判断是否是新的键值对行（包含冒号）
        if ': ' in stripped_line:
            # 只分割一次，避免值中存在冒号导致错误
            key, value = stripped_line.split(': ', 1)
            current_key = key.strip()
            control_dict[current_key] = value.strip()
        else:
            # 处理续行，追加到当前键的值中
            if current_key is not None:
                control_dict[current_key] += ' ' + stripped_line

# 写入JSON文件，保留非ASCII字符
with open("test.json", "w", encoding='utf-8') as out_file:
    json.dump(control_dict, out_file, indent=4, ensure_ascii=False, sort_keys=False)

关键改进点 #

• 新增current_key变量，用于记录当前正在处理的键，遇到续行时直接追加内容
• 使用split(': ', 1)只做一次分割，避免值中包含冒号时触发错误
• 跳过空行，减少无效处理
• 写入JSON时添加ensure_ascii=False，防止特殊字符被转义，保证内容可读性

内容的提问来源于stack exchange，提问作者nerd