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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 std::io::stdout;
use lister::Lister;
use result::Result;
use error::ResultExt;
use libimagstore::store::FileLockEntry;
use prettytable::Table;
use prettytable::cell::Cell;
use prettytable::row::Row;
pub struct TableLister<F: Fn(&FileLockEntry) -> Vec<String>> {
line_generator: F,
header: Option<Vec<String>>,
with_idx: bool,
}
impl<F: Fn(&FileLockEntry) -> Vec<String>> TableLister<F> {
pub fn new(gen: F) -> TableLister<F> {
TableLister {
line_generator: gen,
header: None,
with_idx: true,
}
}
pub fn with_header(mut self, hdr: Vec<String>) -> TableLister<F> {
self.header = Some(hdr);
self
}
pub fn with_idx(mut self, b: bool) -> TableLister<F> {
self.with_idx = b;
self
}
}
impl<F: Fn(&FileLockEntry) -> Vec<String>> Lister for TableLister<F> {
fn list<'b, I: Iterator<Item = FileLockEntry<'b>>>(&self, entries: I) -> Result<()> {
use error::ListErrorKind as LEK;
use error::ListError as LE;
let mut table = Table::new();
let mut header_len : Option<usize> = None;
match self.header {
Some(ref s) => {
debug!("We have a header... preparing");
let mut cells : Vec<Cell> = s.iter().map(|s| Cell::new(s)).collect();
if self.with_idx {
cells.insert(0, Cell::new("#"));
}
table.set_titles(Row::new(cells));
header_len = Some(s.len());
},
None => {
debug!("No header for table found... continuing without");
},
}
entries.fold(Ok(table), |table, entry| {
table.and_then(|mut table| {
let mut v = (self.line_generator)(&entry);
{
let v_len = v.len();
if header_len.is_none() {
header_len = Some(v_len);
}
if header_len.map(|l| v_len > l).unwrap_or(false) {
return Err(LE::from_kind(LEK::FormatError));
}
while header_len.map(|l| v.len() != l).unwrap_or(false) {
v.push(String::from(""));
}
}
table.add_row(v.iter().map(|s| Cell::new(s)).collect());
Ok(table)
})
})
.and_then(|tbl| {
let mut io = stdout();
tbl.print(&mut io).chain_err(|| LEK::IOError)
})
}
}
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