Question

我已从数据库导出CSV文件。某些字段是较长的文本块，可以包含换行符。从这个文件中仅删除双引号内的换行符，但保留所有其他换行符的最简单方法是什么？

我不在乎它是否使用Bash命令行一个衬里或简单的脚本，只要它有效。

例如，

"Value1", "Value2", "This is a longer piece
    of text with
    newlines in it.", "Value3"
"Value4", "Value5", "Another value", "value6"

应该删除较长文本中的换行符，但不要删除分隔两行的换行符。

Answer 1

这是Python的解决方案：

import re
pattern = re.compile(r'".*?"', re.DOTALL)
print pattern.sub(lambda x: x.group().replace('\n', ''), text)

查看在线工作：ideone

Answer 2

在Python中：

import csv
with open("input.csv", "rb") as input, open("output.csv", "wb") as output:
    w = csv.writer(output)
    for record in csv.reader(input):
        w.writerow(tuple(s.remove("\n") for s in record))

Answer 3

这非常简单，但可能适合您：

# cat <<\! | sed ':a;/"$/{P;D};N;s/\n//g;ba'                            
> "Value1", "Value2", "This is a longer piece
>     of text with
>     newlines in it.", "Value3"
> "Value4", "Value5", "Another value", "value6"
> !
"Value1", "Value2", "This is a longer piece    of text with    newlines in it.", "Value3"
"Value4", "Value5", "Another value", "value6"

如何从文件中所有引用的文本中删除换行符？

3 个答案: