diff options
Diffstat (limited to 'lib/entry/libimagentryfilter/src/builtin/header/field_isempty.rs')
-rw-r--r-- | lib/entry/libimagentryfilter/src/builtin/header/field_isempty.rs | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/entry/libimagentryfilter/src/builtin/header/field_isempty.rs b/lib/entry/libimagentryfilter/src/builtin/header/field_isempty.rs new file mode 100644 index 00000000..7a9c6521 --- /dev/null +++ b/lib/entry/libimagentryfilter/src/builtin/header/field_isempty.rs @@ -0,0 +1,64 @@ +// +// imag - the personal information management suite for the commandline +// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; version +// 2.1 of the License. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +// + +use libimagstore::store::Entry; +use libimagstore::toml_ext::TomlValueExt; + +use builtin::header::field_path::FieldPath; +use filters::filter::Filter; + +use toml::Value; + +pub struct FieldIsEmpty { + header_field_path: FieldPath, +} + +impl FieldIsEmpty { + + pub fn new(path: FieldPath) -> FieldIsEmpty { + FieldIsEmpty { + header_field_path: path, + } + } + +} + +impl Filter<Entry> for FieldIsEmpty { + + fn filter(&self, e: &Entry) -> bool { + e.get_header() + .read(&self.header_field_path[..]) + .map(|v| { + match v { + Some(Value::Array(a)) => a.is_empty(), + Some(Value::String(s)) => s.is_empty(), + Some(Value::Table(t)) => t.is_empty(), + Some(Value::Boolean(_)) | + Some(Value::Float(_)) | + Some(Value::Integer(_)) => false, + _ => true, + } + }) + .unwrap_or(false) + } + +} + + + |