响应预期的动态与交互式响应

Question

我期待使用unix expect命令来包装eb init。

下面是我想要的API。

eb-init.exp --region=eu-central-1 --app=my-app --env=my-app-live

这里是当前的脚本，我有：

set timeout -1 
spawn $env(SHELL) 
match_max 100000 
send -- "eb init\r" 
expect "Select a default region" 
send -- "5\r" 
expect "Select an application to use" 
send -- "1\r" 
expect "Select the default environment" 
send -- "1\r" 
send -- "exit\r" 
expect eof 

我需要一种方法来从响应交互期望和字符串与该命令的输入参数就行了。例如，如果以下是命令返回的内容，它与expect "Select a default region"匹配，我想使用参数eu-central-1并获取数字5并动态响应。

Select a default region 
1) us-east-1 : US East (N. Virginia) 
2) us-west-1 : US West (N. California) 
3) us-west-2 : US West (Oregon) 
4) eu-west-1 : EU (Ireland) 
5) eu-central-1 : EU (Frankfurt) 
6) ap-south-1 : Asia Pacific (Mumbai) 
7) ap-southeast-1 : Asia Pacific (Singapore) 
8) ap-southeast-2 : Asia Pacific (Sydney) 
9) ap-northeast-1 : Asia Pacific (Tokyo) 
10) ap-northeast-2 : Asia Pacific (Seoul) 
11) sa-east-1 : South America (Sao Paulo) 
12) cn-north-1 : China (Beijing) 
(default is 3): 

这怎么可能？

Answer 1

尝试这样的：

set region "eu-central-1" 
expect "Select a default region" 
expect -re "\[\[:space:]]+(\[0-9]+)\\) $region *:" 
expect "(default is *):" 
send $expect_out(1,string)\r