英文:
Go: regexp matching a pattern AND then another pattern
问题
我有以下的Golang代码：
package main
import (
"fmt"
"regexp"
)
func main() {
// dummy text data
blob := `
#s-kiwi
foo
#e-kiwi
#s-banana
bar
#e-banana
#s-mango
baz
#e-mango
`
// try to match two lines
fruit := "banana"
result, _ := regexp.MatchString("#[se]-"+fruit, blob)
fmt.Println(result)
}
Go playground链接：https://go.dev/play/p/p9Q4HYijx9m
我试图通过使用AND属性来实现完全匹配。我想要搜索模式#s-banana和#e-banana，以确保blob文本具有其封闭和启动参数。
我尝试使用regexp.MatchString("#[se]-"+fruit, blob)，但"#[se]-"只匹配字符s或e。
这个能在一行代码中实现吗？我应该添加一个新的正则表达式条件吗？如果是这样的话，这似乎不太完善。
我的期望结果是：
尝试使用正则表达式在Golang中搜索两个字符串，并使用AND条件。
非常感谢。
英文:
I have the following Golang code:
package main
import (
"fmt"
"regexp"
)
func main() {
// dummy text data
blob := `
#s-kiwi
foo
#e-kiwi
#s-banana
bar
#e-banana
#s-mango
baz
#e-mango
`
// try to match two lines
fruit := "banana"
result, _ := regexp.MatchString("#[se]-"+fruit, blob)
fmt.Println(result)
}
Go playground link: https://go.dev/play/p/p9Q4HYijx9m
I am trying to achieve a full matching with the usage of an AND property. I would like to search for, the pattern #s-banana AND #e-banana just to ensure that the blob text has its enclosing and initiator parameters.
What I have tried is using regexp.MatchString("#[se]-"+fruit, blob) but "#[se]-" only matches characters s OR e.
Could this be implemented in a oneliner? Should I add a new regexp condition? If that's the case this does not seem quite polished.
What my desired result is:
Trying to search for two strings in text with regexp on golang using an AND condition.
Many thanks.
答案1
得分: 3
不完全清楚你想要做什么。但是假设你想要确认多行文本中是否包含以#s-banana开头、以#e-banana结尾的一对标签，你可以使用以下代码进行搜索，其中标签之间可以有任意数量的字符：
result, _ := regexp.MatchString("(?s)#s-"+fruit+".*?#e-"+fruit, blob)
这将返回true。初始的(?s)允许.匹配换行符，而.*?匹配包括换行符在内的最短序列的零个或多个字符。
英文:
It's not completely clear what you are trying to do. But assuming you want to confirm the multiline text contains a pair of tags starting with #s-banana and ending with #e-banana you can search for that, with any number of characters inbetween:
result, _ := regexp.MatchString("(?s)#s-"+fruit+".*?#e-"+fruit, blob)
That returns true. The initial (?s) allows . to match newlines too, and the .*? matches the shortest sequence of zero or more characters including newlines.
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