Carlos Florêncio
69 lines
1.7 KiB
Go
69 lines
1.7 KiB
Go
// Package gitinit runs Git commands inside an inherited directory descriptor.
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package gitinit
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import (
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"fmt"
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"os"
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"strings"
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)
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const (
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helperArgument = "__git-init-open-directory"
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helperEnvironmentVariable = "KANDEV_INTERNAL_GIT_INIT_HELPER"
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)
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func runHelper(args []string) (int, bool) {
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if len(args) == 0 || args[0] != helperArgument {
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return 0, false
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}
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if len(args) < 3 {
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fmt.Fprintln(os.Stderr, "git init helper requires Git arguments")
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return 2, true
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}
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return runInheritedDirectory(args[1], args[2:]), true
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}
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func withHelperEnvironment(environment []string) []string {
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filtered := withoutHelperEnvironment(environment)
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return append(filtered, helperEnvironmentVariable+"=1")
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}
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func withoutHelperEnvironment(environment []string) []string {
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prefix := helperEnvironmentVariable + "="
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filtered := make([]string, 0, len(environment))
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for _, entry := range environment {
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if !strings.HasPrefix(entry, prefix) {
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filtered = append(filtered, entry)
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}
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}
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return filtered
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}
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func withIsolatedCommitEnvironment(environment []string) []string {
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filtered := make([]string, 0, len(environment)+2)
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for _, entry := range environment {
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key, _, found := strings.Cut(entry, "=")
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if found && isGitCommitEnvironmentKey(key) {
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continue
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}
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filtered = append(filtered, entry)
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}
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return append(filtered,
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"GIT_CONFIG_NOSYSTEM=1",
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"GIT_CONFIG_GLOBAL="+os.DevNull,
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)
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}
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func isGitCommitEnvironmentKey(key string) bool {
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upperKey := strings.ToUpper(key)
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if strings.HasPrefix(upperKey, "GIT_CONFIG_") || upperKey == "GIT_CONFIG" {
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return true
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}
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switch upperKey {
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case "GIT_AUTHOR_NAME", "GIT_AUTHOR_EMAIL", "GIT_COMMITTER_NAME", "GIT_COMMITTER_EMAIL":
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return true
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default:
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return false
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}
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}
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