a35f0759de
If a quote is empty on its own, i.e., '', match an empty string. Otherwise, if
the quote is empty and inside another set of balanced quotes, treat it as-is,
i.e., "foo """ matches []string{"foo \"\""}.
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package tools
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import "regexp"
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var (
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// quoteFieldRe greedily matches between matching pairs of '', "", or
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// non-word characters.
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quoteFieldRe = regexp.MustCompile("'(.*)'|\"(.*)\"|(\\S*)")
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)
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// QuotedFields is an alternative to strings.Fields (see:
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// https://golang.org/pkg/strings#Fields) that respects spaces between matching
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// pairs of quotation delimeters.
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//
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// For instance, the quoted fields of the string "foo bar 'baz etc'" would be:
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// []string{"foo", "bar", "baz etc"}
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//
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// Whereas the same argument given to strings.Fields, would return:
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// []string{"foo", "bar", "'baz", "etc'"}
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func QuotedFields(s string) []string {
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submatches := quoteFieldRe.FindAllStringSubmatch(s, -1)
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out := make([]string, 0, len(submatches))
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for _, matches := range submatches {
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// if a leading or trailing space is found, ignore that
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if matches[0] == "" {
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continue
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}
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// otherwise, find the first non-empty match (inside balanced
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// quotes, or a space-delimited string)
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var str string
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for _, m := range matches[1:] {
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if len(m) > 0 {
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str = m
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break
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}
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}
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out = append(out, str)
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}
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return out
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}
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