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Fix the help example, read padding past the shape gate, catch a stray closing brace, and stop the fieldless hint naming a spelling that fails

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Lilleman auf Larv
2026-09-03 20:58:01 +02:00
parent d8048df169
commit 0cdbdb7bf4
2 changed files with 21 additions and 6 deletions
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cmd/fejkdata/main.go
+5 -5
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@@ -30,8 +30,8 @@ const usage = `Usage: fejkdata [flags] <path|template>
An argument containing a { token, or a JSON object, array or string, is a
template; any other argument is a path (a path never contains a brace, a bracket
or a quote). Templates reach the data by reference from the root —
{/sv_SE.person.first} — whether the data is shipped or layered with --data-path. A
bracket that is not valid JSON names no template and no path.
{/sv_SE.person.last} — whether the data is shipped or layered with --data-path. An
argument carrying one of those characters but no valid JSON names neither.
-d, --data-path D a data directory to layer over the shipped data (repeatable; last wins on a clash)
-h, --help print this help, then exit
@@ -208,7 +208,7 @@ func (in invocation) check() (argKind, error) {
return argPath, nil
}
if len(in.paths) != 1 {
return argPath, fmt.Errorf("expected one path, got %d", len(in.paths))
return argPath, fmt.Errorf("expected one path or template, got %d", len(in.paths))
}
return classify(in.paths[0])
}
@@ -276,10 +276,10 @@ const (
// quote, so no path collides with any of those spellings, and the JSON gate is
// valid-JSON so a copied bracket names nothing rather than swallowing an argument.
func classify(arg string) (argKind, error) {
if strings.ContainsRune(arg, '{') || (isJSONStart(arg) && json.Valid([]byte(arg))) {
if strings.ContainsRune(arg, '{') || (isJSONStart(strings.TrimSpace(arg)) && json.Valid([]byte(arg))) {
return argTemplate, nil
}
if i := strings.IndexAny(arg, `[]"`); i >= 0 {
if i := strings.IndexAny(arg, `[]}"`); i >= 0 {
return argPath, fmt.Errorf("%q holds a %q, which no path may, and it is not valid JSON, so it names no template either", arg, arg[i:i+1])
}
return argPath, nil