[英]Using awk with gedit external tools
I have used gedit
with Ubuntu a lot and now transitioning on Macos.我已经将
gedit
与 Ubuntu 一起使用了很多,现在在 Macos 上进行转换。 I noticed that some of the plugins in the Macos version are missing.我注意到 Macos 版本中的一些插件丢失了。 For instance, there is no (AFAIK) an out-of-the-box option to comment/uncomment code.
例如,没有(AFAIK)评论/取消注释代码的开箱即用选项。 However, there is the possibility to define an external tool to basically have whatever you want.
但是,可以定义一个外部工具来基本上拥有您想要的任何东西。
I want to just comment the text selection in R/python style (prepending a #
before each line of the input).我只想以 R/python 样式评论文本选择(在输入的每一行之前添加一个
#
)。 I went to Tools -> Manage External Tools and defined a "Comment Code" tool in this way:我去了工具 - >管理外部工具并以这种方式定义了一个“评论代码”工具:
#!/bin/bash
awk '{print "#" $0}'
and set Input as "Current Selection" and output as "Replace Current Selection".并将输入设置为“电流选择”,将 output 设置为“替换电流选择”。
It works if you select a text;如果你 select 一个文本,它就可以工作; however if you don't select anything, it stalls forever, since (for what I understood)
awk
is waiting for an input.但是,如果您没有 select 任何东西,它就会永远停止,因为(据我所知)
awk
正在等待输入。
How can I avoid this problem?我怎样才能避免这个问题? Of course I don't need a
awk
(or whatever) solution, whatever works is fine.当然,我不需要
awk
(或其他)解决方案,任何工作都可以。 I'm not much expert of bash
tools like awk
or sed
, so very likely I'm missing something very simple.我不是
bash
工具的专家,例如awk
或sed
,所以很可能我错过了一些非常简单的东西。
See https://www.gnu.org/software/gawk/manual/html_node/Read-Timeout.html for how to implement a read timeout with GNU awk.请参阅https://www.gnu.org/software/gawk/manual/html_node/Read-Timeout.html了解如何使用 GNU Z5E4C8DFA9E20567E2655E847B66 实现读取超时。
With input from stdin (enter 7 then Enter/Return then Control-D):从 stdin 输入(输入 7 然后 Enter/Return 然后 Control-D):
$ gawk 'BEGIN{PROCINFO["-", "READ_TIMEOUT"]=5000} {print "#" $0}'
7
#7
or with input from a pipe:或来自 pipe 的输入:
$ seq 2 | gawk 'BEGIN{PROCINFO["-", "READ_TIMEOUT"]=5000} {print "#" $0}'
#1
#2
or from a file:或从文件中:
$ seq 2 > file
$ gawk 'BEGIN{PROCINFO["-", "READ_TIMEOUT"]=5000} {print "#" $0}' file
#1
#2
but if you don't provide any input and wait 5 seconds:但如果您不提供任何输入并等待 5 秒:
$ gawk 'BEGIN{PROCINFO["-", "READ_TIMEOUT"]=5000} {print "#" $0}'
gawk: cmd. line:1: fatal: error reading input file `-': Connection timed out
$
You can always redirect stderr the usual way if you don't want to see the timeout message:如果您不想看到超时消息,您可以随时以通常的方式重定向 stderr:
$ gawk 'BEGIN{PROCINFO["-", "READ_TIMEOUT"]=5000} {print "#" $0}' 2>/dev/null
$
but of course that would mask ALL error messages so you might want to do this instead to just mask that one message:但当然这会掩盖所有错误消息,因此您可能想要这样做而不是仅掩盖一条消息:
{ gawk 'BEGIN{PROCINFO["-", "READ_TIMEOUT"]=5000} {print "#" $0}' 2>&1 >&3 |
grep -v 'fatal: error reading input file'; } 3>&1
eg:例如:
$ { gawk 'BEGIN{print "other error" >"/dev/stderr";
PROCINFO["-", "READ_TIMEOUT"]=5000} {print "#" $0}' 2>&1 >&3 |
grep -v 'fatal: error reading input file'; } 3>&1
other error
$
Obviously change the 5000
to however many milliseconds you want the script to wait for input.显然将
5000
更改为您希望脚本等待输入的毫秒数。
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