mirror of https://github.com/docker/docs.git
47 lines
1.0 KiB
Go
47 lines
1.0 KiB
Go
package evaluator
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import (
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"regexp"
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"strings"
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)
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var (
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TOKEN_ENV_INTERPOLATION = regexp.MustCompile("(\\\\\\\\+|[^\\\\]|\\b|\\A)\\$({?)([[:alnum:]_]+)(}?)")
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)
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// handle environment replacement. Used in dispatcher.
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func (b *BuildFile) replaceEnv(str string) string {
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for _, match := range TOKEN_ENV_INTERPOLATION.FindAllString(str, -1) {
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match = match[strings.Index(match, "$"):]
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matchKey := strings.Trim(match, "${}")
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for _, keyval := range b.Config.Env {
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tmp := strings.SplitN(keyval, "=", 2)
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if tmp[0] == matchKey {
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str = strings.Replace(str, match, tmp[1], -1)
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}
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}
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}
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return str
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}
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func (b *BuildFile) FindEnvKey(key string) int {
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for k, envVar := range b.Config.Env {
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envParts := strings.SplitN(envVar, "=", 2)
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if key == envParts[0] {
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return k
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}
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}
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return -1
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}
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func handleJsonArgs(args []string, attributes map[string]bool) []string {
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if attributes != nil && attributes["json"] {
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return args
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}
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// literal string command, not an exec array
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return append([]string{"/bin/sh", "-c", strings.Join(args, " ")})
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}
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