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end: 'Foo'
result: 'BarBaz'</pre>
=={{header|Vlang}}==
{{trans|Go}}
<lang vlang>fn text_between(str string, start string, end string) string {
if str == "" || start == "" || end == "" {
return str
}
mut s := 0
if start != "start" {
s = str.index(start) or {-1}
}
if s == -1 {
return ""
}
mut si := 0
if start != "start" {
si = s + start.len
}
mut e := str.len
if end != "end" {
e = str[si..].index(end) or {-1}
if e == -1 {
return str[si..]
}
e += si
}
return str[si..e]
}
fn main() {
texts := [
"Hello Rosetta Code world",
"Hello Rosetta Code world",
"Hello Rosetta Code world",
"</div><div style=\"chinese\">你好嗎</div>",
"<text>Hello <span>Rosetta Code</span> world</text><table style=\"myTable\">",
"<table style=\"myTable\"><tr><td>hello world</td></tr></table>",
"The quick brown fox jumps over the lazy other fox",
"One fish two fish red fish blue fish",
"FooBarBazFooBuxQuux",
]
starts:= [
"Hello ", "start", "Hello ", "<div style=\"chinese\">",
"<text>", "<table>", "quick ", "fish ", "Foo",
]
ends := [
" world", " world", "end", "</div>", "<table>",
"</table>", " fox", " red", "Foo",
]
for i, text in texts {
println("Text: \"$text\"")
println("Start delimiter: \"${starts[i]}\"")
println("End delimiter: \"${ends[i]}\"")
b := text_between(text, starts[i], ends[i])
println("Output: \"$b\"\n")
}
}</lang>
{{out}}
<pre>
Text: "Hello Rosetta Code world"
Start delimiter: "Hello "
End delimiter: " world"
Output: "Rosetta Code"
Text: "Hello Rosetta Code world"
Start delimiter: "start"
End delimiter: " world"
Output: "Hello Rosetta Code"
Text: "Hello Rosetta Code world"
Start delimiter: "Hello "
End delimiter: "end"
Output: "Rosetta Code world"
Text: "</div><div style="chinese">你好嗎</div>"
Start delimiter: "<div style="chinese">"
End delimiter: "</div>"
Output: "你好嗎"
Text: "<text>Hello <span>Rosetta Code</span> world</text><table style="myTable">"
Start delimiter: "<text>"
End delimiter: "<table>"
Output: "Hello <span>Rosetta Code</span> world</text><table style="myTable">"
Text: "<table style="myTable"><tr><td>hello world</td></tr></table>"
Start delimiter: "<table>"
End delimiter: "</table>"
Output: ""
Text: "The quick brown fox jumps over the lazy other fox"
Start delimiter: "quick "
End delimiter: " fox"
Output: "brown"
Text: "One fish two fish red fish blue fish"
Start delimiter: "fish "
End delimiter: " red"
Output: "two fish"
Text: "FooBarBazFooBuxQuux"
Start delimiter: "Foo"
End delimiter: "Foo"
Output: "BarBaz"
</pre>
=={{header|Wren}}==
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