ruby中的一个脚本，用于查找“的所有实例”&引用&引用；并替换为“&引用&引用&引用；_Ruby_Regex_String_Replace

ruby中的一个脚本，用于查找“的所有实例”&引用&引用；并替换为“&引用&引用&引用；

ruby regex string replace

ruby中的一个脚本，用于查找“的所有实例”&引用&引用；并替换为“&引用&引用&引用；,ruby,regex,string,replace,Ruby,Regex,String,Replace,我有一个问题，我需要用两个双引号替换文本周围的一个双引号。采样线在下面 “1”，“未知”，“未知”，“未知”，“假”，“1077.36”，“132”，“8.1618”，“97”，“483”，“1”，“51”，“2010-06-17 20:58:00”，“2013-12-04 12:05:00”，“101”，“白橡树”，“0”，“0”，“1”，“1” 例如，在第一个逗号之前，我想知道括号中的内容。（“1”）我正在使用的脚本如下所示 file_names = ['test.csv'] file_n

我有一个问题，我需要用两个双引号替换文本周围的一个双引号。采样线在下面

“1”，“未知”，“未知”，“未知”，“假”，“1077.36”，“132”，“8.1618”，“97”，“483”，“1”，“51”，“2010-06-17 20:58:00”，“2013-12-04 12:05:00”，“101”，“白橡树”，“0”，“0”，“1”，“1”

例如，在第一个逗号之前，我想知道括号中的内容。（“1”）我正在使用的脚本如下所示

file_names = ['test.csv']

file_names.each do |file_name|

  text = File.read(file_name)

File.write(file_name, text.gsub(/"/, "\"\""))

end

如果mt regex看起来像这样/“{1}/，它将拾取每个双引号，因此这似乎也不起作用

非常感谢您的帮助。谢谢。

如果您不想在单个regexp gsub中进行替换，您可以先用不同的东西替换两个双引号（例如，永不出现的utf-8符号），然后将一个双引号替换为两个双引号，最后将特殊字符再次替换为两个双引号。

如果您不想在单个regexp gsub中进行替换，可以先将两个双引号替换为其他符号（例如，永不出现的utf-8符号），然后将一个双引号替换为两个双引号，最后将特殊字符再次替换为两个双引号。

如果我理解正确，您希望将

“…”

的任何实例替换为

“…”“

，但前提是，

…

两边都有一个双引号。您的一些值的两边已经有两个双引号，应该保持不变。例如，

“未知”

应保持为

“未知”

，而不应变为

“未知”

我假设您的“示例行”是一个单字符串，也就是说，它应该用引号括起来以声明为字符串，就像我在代码中做的那样——我用单引号括起来以避免大量双引号转义

line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

我使用的正则表达式使用负的lookbehind和lookahead来识别那些没有前面或后面有另一个双引号的双引号，并用两个双引号替换它们

line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

因此，要将其应用于代码，只需将

文件替换为。将行写入：
File.write(file_name, text.gsub(/(?<!")"(?!")/, '""'))

File.write（文件名，text.gsub（/（？如果我理解正确，您希望将“…
的任何实例替换为”…）
，但仅当…
两边都有一个双引号时。您的某些值两边已经有两个双引号，应保持不变。例如，“未知”
应保持“未知”
，而不应变为“未知”

我假设您的“示例行”是一个单字符串，也就是说，它应该用引号括起来以声明为字符串，就像我在代码中做的那样——我用单引号括起来以避免大量双引号转义
line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

我使用的正则表达式使用负的lookbehind和lookahead来识别那些没有前面或后面有另一个双引号的双引号，并用两个双引号替换它们
line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

因此，要将其应用于代码，只需将文件替换为。将行写入：
File.write(file_name, text.gsub(/(?<!")"(?!")/, '""'))

File.write（文件名，text.gsub（/（？如果我理解正确，您希望将“…
的任何实例替换为”…）
，但仅当…
两边都有一个双引号时。您的某些值两边已经有两个双引号，应保持不变。例如，“未知”
应保持“未知”
，而不应变为“未知”

我假设您的“示例行”是一个单字符串，也就是说，它应该用引号括起来以声明为字符串，就像我在代码中做的那样——我用单引号括起来以避免大量双引号转义
line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

我使用的正则表达式使用负的lookbehind和lookahead来识别那些没有前面或后面有另一个双引号的双引号，并用两个双引号替换它们
line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

因此，要将其应用于代码，只需将文件替换为。将行写入：
File.write(file_name, text.gsub(/(?<!")"(?!")/, '""'))

File.write（文件名，text.gsub（/（？如果我理解正确，您希望将“…
的任何实例替换为”…）
，但仅当…
两边都有一个双引号时。您的某些值两边已经有两个双引号，应保持不变。例如，“未知”
应保持“未知”
，而不应变为“未知”

我假设您的“示例行”是一个单字符串，也就是说，它应该用引号括起来以声明为字符串，就像我在代码中做的那样——我用单引号括起来以避免大量双引号转义
line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

我使用的正则表达式使用负的lookbehind和lookahead来识别那些没有前面或后面有另一个双引号的双引号，并用两个双引号替换它们
line = '"1",""Unknown"","""","""",""Unknown"","""",""Unknown"","""","False","1077.36","132","8.1618","97","483","1","51","2010-06-17 20:58:00","2013-12-04 12:05:00","101",""White Oak"","0","0","1","1"'
line.gsub(/(?<!")"(?!")/, '""')

因此，要将其应用于代码，只需将文件替换为。将行写入：
File.write(file_name, text.gsub(/(?<!")"(?!")/, '""'))

File.write（文件名，text.gsub（/）如果您不确定正则表达式是否适用于您