68 lines
1.1 KiB
Go
68 lines
1.1 KiB
Go
package dotsql
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import (
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"bufio"
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"regexp"
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"strings"
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)
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type Scanner struct {
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line string
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queries map[string]string
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current string
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}
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type stateFn func(*Scanner) stateFn
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func getTag(line string) string {
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re := regexp.MustCompile("^\\s*--\\s*name:\\s*(\\S+)")
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matches := re.FindStringSubmatch(line)
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if matches == nil {
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return ""
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}
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return matches[1]
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}
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func initialState(s *Scanner) stateFn {
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if tag := getTag(s.line); len(tag) > 0 {
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s.current = tag
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return queryState
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}
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return initialState
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}
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func queryState(s *Scanner) stateFn {
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if tag := getTag(s.line); len(tag) > 0 {
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s.current = tag
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} else {
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s.appendQueryLine()
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}
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return queryState
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}
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func (s *Scanner) appendQueryLine() {
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current := s.queries[s.current]
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line := strings.Trim(s.line, " \t")
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if len(line) == 0 {
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return
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}
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if len(current) > 0 {
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current = current + "\n"
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}
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current = current + line
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s.queries[s.current] = current
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}
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func (s *Scanner) Run(io *bufio.Scanner) map[string]string {
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s.queries = make(map[string]string)
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for state := initialState; io.Scan(); {
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s.line = io.Text()
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state = state(s)
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}
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return s.queries
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}
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