41 lines
967 B
Go
41 lines
967 B
Go
package main
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import (
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"errors"
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"fmt"
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"strconv"
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"strings"
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)
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func phpUnquote(s string) (string, error) {
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if len(s) == 0 {
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return "", errors.New("expected quotes around string")
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}
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if s[0] == '"' {
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// Quote system is similar enough to Go's that strconv will probably just work
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// PROBLEM 1: PHP has some lax parsing for unknown escape sequences
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// e.g. regex("foo\.") will be silently parsed as regex("foo.")
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// PROBLEM 2: PHP supports multiline string literals, strconv.Unquote does not
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// Apply fixup
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s2 := strings.Replace(strings.Replace(s, "\r", `\r`, -1), "\n", `\n`, -1)
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ret, err := strconv.Unquote(s2)
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if err != nil {
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return "", fmt.Errorf("Parsing string literal `%s`: %v", s, err)
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}
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return ret, nil
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}
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if s[0] == '\'' {
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// Single-quotes escape fewer things
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unSQuo := strings.NewReplacer(`\'`, `'`, `\\`, `\`)
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return unSQuo.Replace(s[1 : len(s)-1]), nil
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}
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return "", errors.New("expected single/double quotes")
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}
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