70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package container
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import (
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"archive/tar"
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"bufio"
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"context"
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"fmt"
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"io"
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"strings"
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"github.com/nektos/act/pkg/common"
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)
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func parseEnvFile(e Container, srcPath string, env *map[string]string) common.Executor {
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localEnv := *env
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return func(ctx context.Context) error {
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envTar, err := e.GetContainerArchive(ctx, srcPath)
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if err != nil {
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return nil
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}
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defer envTar.Close()
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reader := tar.NewReader(envTar)
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_, err = reader.Next()
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if err != nil && err != io.EOF {
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return err
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}
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s := bufio.NewScanner(reader)
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s.Buffer(nil, 1024*1024*1024) // increase buffer to 1GB to avoid scanner buffer overflow
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firstLine := true
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for s.Scan() {
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line := s.Text()
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if firstLine {
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firstLine = false
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// skip utf8 bom, powershell 5 legacy uses it for utf8
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if len(line) >= 3 && line[0] == 239 && line[1] == 187 && line[2] == 191 {
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line = line[3:]
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}
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}
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singleLineEnv := strings.Index(line, "=")
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multiLineEnv := strings.Index(line, "<<")
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if singleLineEnv != -1 && (multiLineEnv == -1 || singleLineEnv < multiLineEnv) {
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localEnv[line[:singleLineEnv]] = line[singleLineEnv+1:]
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} else if multiLineEnv != -1 {
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multiLineEnvContent := ""
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multiLineEnvDelimiter := line[multiLineEnv+2:]
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delimiterFound := false
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for s.Scan() {
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content := s.Text()
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if content == multiLineEnvDelimiter {
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delimiterFound = true
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break
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}
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if multiLineEnvContent != "" {
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multiLineEnvContent += "\n"
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}
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multiLineEnvContent += content
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}
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if !delimiterFound {
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return fmt.Errorf("invalid format delimiter '%v' not found before end of file", multiLineEnvDelimiter)
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}
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localEnv[line[:multiLineEnv]] = multiLineEnvContent
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} else {
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return fmt.Errorf("invalid format '%v', expected a line with '=' or '<<'", line)
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}
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}
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env = &localEnv
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return s.Err()
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}
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}
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