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问题描述

我非常努力地使Windows Shell与jq一起使用,并且失败了。

I am trying really hard to get the Windows shell working with jq and failing miserably.

我想要这种类型的东西

echo '["a","b","c"]' | .\Downloads\jq.exe -r '{ "data": map({ "{#SNAME}": . })}'

但是我得到一个错误:

如果我只是做 echo'[ a, b, c]'| .\Downloads\jq.exe -r'。'然后很高兴,但是ii还要添加其他字符,例如 echo'[ a, b , c]'| .\Downloads\jq.exe -r'{。}',然后再次失败:

If i just do echo '["a","b","c"]' | .\Downloads\jq.exe -r '.' then it's happy but as soon i i add in other characters such as echo '["a","b","c"]' | .\Downloads\jq.exe -r '{.}' then it fails again with:

有人吗?知道如何使Windows shell对jq满意,以使上述示例能够按预期工作?

Does anyone know how to make Windows shell happy with jq for the above examples to work as expected ?

使用jq网站上的最新1.6版本进行这些测试,并确认jq命令可以使用Linux和jqplay.org。

Using latest 1.6 build from jq website for these tests and confirmed the jq commands work using Linux and jqplay.org.

谢谢。

推荐答案

您有三个主要选项:


  1. (轻松)将JSON和jq程序放入单独的文件中(或者小心地放入一个文件),并相应地调用jq。

  1. (Easy) Put the JSON and jq program into separate files (or maybe, with care, into one file), and invoke jq accordingly.

(容易出错),请遵循所用shell的引用规则。

(Error-prone) Follow the quoting rules for the shell you're using.

上述各项的组合。

我的基本规则理解如下:在Windows cmd 命令行提示符下,在orde中r引用字符串,可以使用双引号,并使用反斜杠将字符串内的双引号转义。

The basic rule as I understand it is as follows: at a Windows cmd command-line prompt, in order to quote strings, you use double-quotes, and escape double-quotes within the string using backslashes.

例如:

C>ver
Microsoft Windows [Version 10.0.17134.590]

C>echo "hello \"world\"" | jq .
"hello \"world\""

C>jq -n "\"hello world\""
"hello world"



您的示例



Your example

C>echo ["a","b","c"] | jq -c "{\"data\":map({\"{#SNAME}\":.})}"
{"data":[{"{#SNAME}":"a"},{"{#SNAME}":"b"},{"{#SNAME}":"c"}]}



后记



除了哈希()和花括号( {} ),可以通过避免空格来实现目标:

Postscript

Except for the hash (#) and braces ({}) in the string, one can achieve the goal by avoiding spaces:

C>echo ["a","b","c"] | jq -c {"data":map({"SNAME":.})}
{"data":[{"SNAME":"a"},{"SNAME":"b"},{"SNAME":"c"}]}



Powershell



同样,除了哈希和花括号外,还可以使用简单的解决方案:

Powershell

Again, except for the hash and braces, simple solutions are possible:

使用单引号引起来的字符串:

Using single-quoted strings:

 echo '["a", "b", "c"]' | jq -c '{"data": map( {"SNAME": . })}'
 {"data":[{"SNAME":"a"},{"SNAME":"b"},{"SNAME":"c"}]}

使用 在双引号字符串内:

Using "" inside double-quoted strings:

echo '["a", "b", "c"]' | jq -c "{""data"": map( {""SNAME"": . })}"
{"data":[{"SNAME":"a"},{"SNAME":"b"},{"SNAME":"c"}]}

我所用的PowerShell文档

The PowerShell documentation that I've seen suggests backticks can be used to escape special characters within double-quoted strings, but YMMV.

碰碰运气的机会!

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10-28 22:32