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//
// 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 clap::{Arg, ArgMatches, App, SubCommand};
use tag::Tag;
use libimagutil::cli_validators::is_tag;
/// Generates a `clap::SubCommand` to be integrated in the commandline-ui builder for building a
/// "tags --add foo --remove bar" subcommand to do tagging action.
pub fn tag_subcommand<'a, 'b>() -> App<'a, 'b> {
SubCommand::with_name(tag_subcommand_name())
.author("Matthias Beyer <mail@beyermatthias.de>")
.version("0.1")
.about("Add or remove tags")
.arg(tag_add_arg())
.arg(tag_remove_arg())
}
pub fn tag_add_arg<'a, 'b>() -> Arg<'a, 'b> {
Arg::with_name(tag_subcommand_add_arg_name())
.short("a")
.long("add")
.takes_value(true)
.value_name("tags")
.multiple(true)
.validator(is_tag)
.help("Add tags, seperated by comma or by specifying multiple times")
}
pub fn tag_remove_arg<'a, 'b>() -> Arg<'a, 'b> {
Arg::with_name(tag_subcommand_remove_arg_name())
.short("r")
.long("remove")
.takes_value(true)
.value_name("tags")
.multiple(true)
.validator(is_tag)
.help("Remove tags, seperated by comma or by specifying multiple times")
}
pub fn tag_subcommand_name() -> &'static str {
"tags"
}
pub fn tag_subcommand_add_arg_name() -> &'static str {
"add-tags"
}
pub fn tag_subcommand_remove_arg_name() -> &'static str {
"remove-tags"
}
pub fn tag_subcommand_names() -> Vec<&'static str> {
vec![tag_subcommand_add_arg_name(), tag_subcommand_remove_arg_name()]
}
/// Generates a `clap::Arg` which can be integrated into the commandline-ui builder for building a
/// "-t" or "--tags" argument which takes values for tagging actions (add, remove)
pub fn tag_argument<'a, 'b>() -> Arg<'a, 'b> {
Arg::with_name(tag_argument_name())
.short("t")
.long("tags")
.takes_value(true)
.multiple(true)
.validator(is_tag)
.help("Add or remove tags, prefixed by '+' (for adding) or '-' (for removing)")
}
pub fn tag_argument_name() -> &'static str {
"specify-tags"
}
/// Get the tags which should be added from the commandline
///
/// Returns none if the argument was not specified
pub fn get_add_tags(matches: &ArgMatches) -> Option<Vec<Tag>> {
let add = tag_subcommand_add_arg_name();
extract_tags(matches, add, '+')
.or_else(|| matches.values_of(add).map(|values| values.map(String::from).collect()))
}
/// Get the tags which should be removed from the commandline
///
/// Returns none if the argument was not specified
pub fn get_remove_tags(matches: &ArgMatches) -> Option<Vec<Tag>> {
let rem = tag_subcommand_remove_arg_name();
extract_tags(matches, rem, '+')
.or_else(|| matches.values_of(rem).map(|values| values.map(String::from).collect()))
}
fn extract_tags(matches: &ArgMatches, specifier: &str, specchar: char) -> Option<Vec<Tag>> {
if let Some(submatch) = matches.subcommand_matches("tags") {
submatch.values_of(specifier)
.map(|values| values.map(String::from).collect())
} else {
matches.values_of("specify-tags")
.map(|argmatches| {
argmatches
.map(String::from)
.filter(|s| s.starts_with(specchar))
.map(|s| {
String::from(s.split_at(1).1)
})
.collect()
})
}
}
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