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Do not panic when StdIn is closed (#1867)

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When the shell executing yq has no open stdin, os.Stdin.Stat() return nil and yq fails to continue. This commit fixes a missing verification on the result of os.Stdin.Stat() in the utils.processStdInArgs function and adds an acceptance test to cover this scenario in the future. This bug affects yq since version 4.26.1.
This commit is contained in:
Alessandro Di Stefano 2023-11-18 02:20:12 +01:00 committed by GitHub
parent 3d64bdadc1
commit e5cc57bedf
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2 changed files with 12 additions and 3 deletions
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8
acceptance_tests/basic.sh
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@ -362,6 +362,12 @@ EOM
assertEquals "$expected" "$X"
}
testBasicClosedStdIn() {
cat >test.yml <<EOL
a: 1
EOL
X=$(./yq e '.a' test.yml <&-)
assertEquals "1" "$X"
}
source ./scripts/shunit2

7
cmd/utils.go
View File

@ -227,8 +227,11 @@ func maybeFile(str string) bool {
}
func processStdInArgs(args []string) []string {
stat, _ := os.Stdin.Stat()
pipingStdin := (stat.Mode() & os.ModeCharDevice) == 0
stat, err := os.Stdin.Stat()
if err != nil {
yqlib.GetLogger().Debugf("error getting stdin: %v", err)
}
pipingStdin := stat != nil && (stat.Mode()&os.ModeCharDevice) == 0
// if we've been given a file, don't automatically
// read from stdin.