Find all strings in between two strings in Go - regex

Question

I am working on extracting mutliple matches between two strings.
In the example below, I am trying to regex out an A B C substring out of my string.
Here is my code:
package main
import (
"fmt"
"regexp"
)
func main() {
str:= "Movies: A B C Food: 1 2 3"
re := regexp.MustCompile(`[Movies:][^Food:]*`)
match := re.FindAllString(str, -1)
fmt.Println(match)
}
I am clearly doing something wrong in my regex. I am trying to get the A B C string between Movies: and Food:.
What is the proper regex to get all strings between two strings?

Answer 1

In Go, since its RE2-based regexp does not support lookarounds, you need to use capturing mechanism with regexp.FindAllStringSubmatch function:
left := "LEFT_DELIMITER_TEXT_HERE"
right := "RIGHT_DELIMITER_TEXT_HERE"
rx := regexp.MustCompile(`(?s)` + regexp.QuoteMeta(left) + `(.*?)` + regexp.QuoteMeta(right))
matches := rx.FindAllStringSubmatch(str, -1)
Note the use of regexp.QuoteMeta that automatically escapes all special regex metacharacters in the left- and right-hand delimiters.
The (?s) makes . match across lines and (.*?) captures all between ABC and XYZ into Group 1.
So, here you can use
package main
import (
"fmt"
"regexp"
)
func main() {
str:= "Movies: A B C Food: 1 2 3"
r := regexp.MustCompile(`Movies:\s*(.*?)\s*Food`)
matches := r.FindAllStringSubmatch(str, -1)
for _, v := range matches {
fmt.Println(v[1])
}
}
See the Go demo. Output: A B C.