diff options
Diffstat (limited to 'lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs')
-rw-r--r-- | lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs b/lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs new file mode 100644 index 00000000..799fee68 --- /dev/null +++ b/lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs @@ -0,0 +1,68 @@ +// +// 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 regex::Regex; +use toml::Value; + +use libimagstore::store::Entry; + +use builtin::header::field_path::FieldPath; +use builtin::header::field_predicate::FieldPredicate; +use builtin::header::field_predicate::Predicate; +use filters::filter::Filter; + +struct EqGrep{ + regex: Regex +} + +impl Predicate for EqGrep { + + fn evaluate(&self, v: Value) -> bool { + match v { + Value::String(s) => self.regex.captures(&s[..]).is_some(), + _ => false, + } + } + +} + +/// Check whether certain header field in a entry is equal to a value +pub struct FieldGrep { + filter: FieldPredicate<EqGrep>, +} + +impl FieldGrep { + + pub fn new(path: FieldPath, grep: Regex) -> FieldGrep { + FieldGrep { + filter: FieldPredicate::new(path, Box::new(EqGrep { regex: grep})), + } + } + +} + +impl Filter<Entry> for FieldGrep { + + fn filter(&self, e: &Entry) -> bool { + self.filter.filter(e) + } + +} + + |