func listFilesForQuery(store *storage.Storage, tx *storage.Tx, queryText, path string, dirOnly, fileOnly, print0, showCount, explicitOnly, ignoreCase bool, sort string) (error, warnings) {
log.Info(2, "parsing query")
expression, err := query.Parse(queryText)
if err != nil {
return fmt.Errorf("could not parse query: %v", err), nil
}
log.Info(2, "checking tag names")
warnings := make(warnings, 0, 10)
tagNames, err := query.TagNames(expression)
if err != nil {
return fmt.Errorf("could not identify tag names: %v", err), nil
}
tags, err := store.TagsByCasedNames(tx, tagNames, ignoreCase)
for _, tagName := range tagNames {
if err := entities.ValidateTagName(tagName); err != nil {
warnings = append(warnings, err.Error())
continue
}
if !tags.ContainsCasedName(tagName, ignoreCase) {
warnings = append(warnings, fmt.Sprintf("no such tag '%v'", tagName))
continue
}
}
valueNames, err := query.ExactValueNames(expression)
if err != nil {
return fmt.Errorf("could not identify value names: %v", err), nil
}
values, err := store.ValuesByCasedNames(tx, valueNames, ignoreCase)
for _, valueName := range valueNames {
if err := entities.ValidateValueName(valueName); err != nil {
warnings = append(warnings, err.Error())
continue
}
if !values.ContainsCasedName(valueName, ignoreCase) {
warnings = append(warnings, fmt.Sprintf("no such value '%v'", valueName))
continue
}
}
log.Info(2, "querying database")
files, err := store.FilesForQuery(tx, expression, path, explicitOnly, ignoreCase, sort)
if err != nil {
if strings.Index(err.Error(), "parser stack overflow") > -1 {
return fmt.Errorf("the query is too complex (see the troubleshooting wiki for how to increase the stack size)"), warnings
} else {
return fmt.Errorf("could not query files: %v", err), warnings
}
}
if err = listFiles(tx, files, dirOnly, fileOnly, print0, showCount); err != nil {
return err, warnings
}
return nil, warnings
}