module texttools

enum SplitState {
	start
	string
}

// split strings in intelligent ways, taking into consideration '"`
// ```
// r0:=texttools.split_smart("'root'   304   0.0  0.0 408185328   1360   ??  S    16Dec23   0:34.06 /usr/sbin/distnoted\n \n")
// assert ['root', '304', '0.0', '0.0', '408185328', '1360', '??', 'S', '16Dec23', '0:34.06', '/usr/sbin/distnoted']==r0
// ```
pub fn split_smart(t string, delimiter_ string) []string {
	mut st := SplitState.start
	mut last := []string{}
	mut result := []string{}
	mut delimiter := delimiter_
	if delimiter.len == 0 {
		delimiter = ',| '
	}
	for c in t.trim_space().split('') {
		if st == .start && '`\'"'.contains(c) {
			// means we are at start if quoted string
			st = .string
			continue
		}
		if st == .string && '`\'"'.contains(c) {
			// means we are at end of quoted string
			st = .start
			result << last.join('').trim_space()
			last = []string{}
			continue
		}
		if st == .string {
			last << c
			continue
		}
		if delimiter.contains(c) {
			if last.len > 0 {
				result << last.join('').trim_space()
			}
			last = []string{}
			continue
		}
		last << c
	}
	if last.len > 0 {
		result << last.join('').trim_space()
	}
	return result
}