我在一个文件中包含结构松散的记录，由 3 或 4 行文本组成（大部分）由空行分隔。并非所有记录都有空行分隔符，但每条记录的最后一行都以“已添加”一词开头。我想生成一个 csv 文件，每条记录在一行上，前面是行号。到目前为止，我只能生成由任意数量的空格和冗余逗号分隔的所有记录的串联。
从逻辑上讲，我试图实现以下目标：
读取行，如果行以“已添加”开头，则在末尾保留换行符，
否则将“换行符”替换为“,”，
或者如果行为空白，则将其删除
endif
样本数据：
Peter Green
Space Monkey at Area 51
Joined
Added by SF 3 weeks ago
Will Rossiter
Joined
Added by SF 3 weeks ago
Dean Matthews
Guitarist at Blues
Joined
Added by SF 3 weeks ago
Hobbit Mak
Farnborough, United Kingdom
Joined
Added by SF 3 weeks ago
Keneth W Moorfield
THE STOREMAN
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Added by SF 3 weeks ago
Mick Georgious
Software Engineer
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Added by SF …