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use std::io::Stdout;
use std::ops::Deref;
use librepology::v1::types::Name;
use librepology::v1::types::Package;
use librepology::v1::types::Problem;
use librepology::v1::types::Repo;
use failure::Fallible as Result;
use prettytable::format;
use prettytable::Table;
use crate::frontend::Frontend;
use crate::backend::Backend;
use crate::compare::ComparePackage;
use librepology::v1::api::Api;
/// A Frontend that formats the output in a nice ASCII-art table
pub struct TableFrontend(Stdout);
impl TableFrontend {
pub fn new(stdout: Stdout) -> Self {
TableFrontend(stdout)
}
fn mktable(&self) -> Table {
let mut table = Table::new();
let format = format::FormatBuilder::new()
.column_separator('|')
.borders('|')
.separators(
&[format::LinePosition::Title, format::LinePosition::Top, format::LinePosition::Bottom],
format::LineSeparator::new('-', '+', '+', '+')
)
.padding(1, 1)
.build();
table.set_format(format);
table.set_titles(row!["Name", "Version", "Repo", "Status", "URL"]);
table
}
fn print(&self, table: Table) -> Result<()> {
let mut outlock = self.0.lock();
table.print(&mut outlock)?;
Ok(())
}
}
impl Frontend for TableFrontend {
fn list_packages(&self, packages: Vec<Package>) -> Result<()> {
let mut table = self.mktable();
packages.iter().for_each(|package| {
let status = if let Some(stat) = package.status() {
format!("{}", stat)
} else {
String::from("No status")
}; // not optimal, but works for now.
let url = if let Some(url) = package.www() {
if let Some(url) = url.first() {
format!("{}", url.deref())
} else {
String::from("")
}
} else {
String::from("")
}; // not optimal, but works for now
let name = package.any_name()
.map(Name::deref)
.map(String::clone)
.unwrap_or_else(|| String::from("<unknown>"));
table.add_row(row![name, package.version(), package.repo(), status, url]);
});
self.print(table)
}
fn list_problems(&self, problems: Vec<Problem>) -> Result<()> {
let mut table = self.mktable();
problems.iter().for_each(|problem| {
trace!("Adding row for: {:?}", problem);
table.add_row(row![
problem.repo(),
problem.name(),
problem.effname(),
problem.maintainer(),
problem.problem_description()
]);
});
self.print(table)
}
fn compare_packages(&self, packages: Vec<ComparePackage>, backend: &Backend, filter_repos: Vec<Repo>) -> Result<()> {
let mut table = self.mktable();
for package in packages {
backend
.project(package.name().deref())?
.into_iter()
.filter(|p| filter_repos.contains(p.repo()))
.for_each(|upstream_package| {
table.add_row(row![
package.name().clone(),
package.version().clone(),
upstream_package.repo().clone(),
upstream_package.version().clone(),
]);
});
}
self.print(table)
}
}
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