316 lines
10 KiB
Rust
316 lines
10 KiB
Rust
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//
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// imag - the personal information management suite for the commandline
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// Copyright (C) 2015-2019 Matthias Beyer <mail@beyermatthias.de> and contributors
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; version
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// 2.1 of the License.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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//
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#![forbid(unsafe_code)]
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#![deny(
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non_camel_case_types,
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non_snake_case,
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path_statements,
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trivial_numeric_casts,
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unstable_features,
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unused_allocation,
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unused_import_braces,
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unused_imports,
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unused_must_use,
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unused_mut,
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unused_qualifications,
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while_true,
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)]
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extern crate clap;
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#[macro_use] extern crate log;
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extern crate handlebars;
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extern crate tempfile;
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extern crate toml;
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extern crate toml_query;
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extern crate failure;
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extern crate libimagentryview;
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extern crate libimagerror;
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extern crate libimagrt;
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extern crate libimagstore;
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extern crate libimagutil;
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use std::str::FromStr;
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use std::collections::BTreeMap;
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use std::io::Write;
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use std::process::Command;
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use std::process::exit;
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use handlebars::Handlebars;
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use toml_query::read::TomlValueReadTypeExt;
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use failure::Error;
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use failure::err_msg;
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use failure::Fallible as Result;
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use clap::App;
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use libimagrt::runtime::Runtime;
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use libimagrt::application::ImagApplication;
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use libimagerror::trace::MapErrTrace;
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use libimagerror::iter::TraceIterator;
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use libimagerror::io::ToExitCode;
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use libimagerror::exit::ExitUnwrap;
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use libimagentryview::builtin::stdout::StdoutViewer;
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use libimagentryview::builtin::md::MarkdownViewer;
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use libimagentryview::viewer::Viewer;
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use libimagstore::iter::get::StoreIdGetIteratorExtension;
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use libimagstore::store::FileLockEntry;
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mod ui;
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/// Marker enum for implementing ImagApplication on
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///
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/// This is used by binaries crates to execute business logic
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/// or to build a CLI completion.
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pub enum ImagView {}
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impl ImagApplication for ImagView {
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fn run(rt: Runtime) -> Result<()> {
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let view_header = rt.cli().is_present("view-header");
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let hide_content = rt.cli().is_present("not-view-content");
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let entries = rt
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.ids::<::ui::PathProvider>()
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.map_err_trace_exit_unwrap()
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.unwrap_or_else(|| {
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error!("No ids supplied");
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::std::process::exit(1);
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})
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.into_iter()
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.map(Ok)
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.into_get_iter(rt.store())
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.trace_unwrap_exit()
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.map(|e| {
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e.ok_or_else(|| err_msg("Entry not found"))
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.map_err(Error::from)
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.map_err_trace_exit_unwrap()
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});
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if rt.cli().is_present("in") {
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let files = entries
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.map(|entry| {
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let tmpfile = create_tempfile_for(&entry, view_header, hide_content);
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rt.report_touched(entry.get_location()).unwrap_or_exit();
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tmpfile
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})
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.collect::<Vec<_>>();
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let mut command = {
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let viewer = rt
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.cli()
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.value_of("in")
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.ok_or_else(|| Error::from(err_msg("No viewer given")))
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.map_err_trace_exit_unwrap();
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let config = rt
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.config()
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.ok_or_else(|| Error::from(err_msg("No configuration, cannot continue")))
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.map_err_trace_exit_unwrap();
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let query = format!("view.viewers.{}", viewer);
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let viewer_template = config
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.read_string(&query)
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.map_err(Error::from)
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.map_err_trace_exit_unwrap()
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.unwrap_or_else(|| {
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error!("Cannot find '{}' in config", query);
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exit(1)
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});
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let mut handlebars = Handlebars::new();
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handlebars.register_escape_fn(::handlebars::no_escape);
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let _ = handlebars
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.register_template_string("template", viewer_template)
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.map_err(Error::from)
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.map_err_trace_exit_unwrap();
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let mut data = BTreeMap::new();
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let file_paths = files
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.iter()
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.map(|&(_, ref path)| path.clone())
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.collect::<Vec<String>>()
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.join(" ");
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data.insert("entries", file_paths);
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let call = handlebars
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.render("template", &data)
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.map_err(Error::from)
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.map_err_trace_exit_unwrap();
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let mut elems = call.split_whitespace();
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let command_string = elems
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.next()
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.ok_or_else(|| Error::from(err_msg("No command")))
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.map_err_trace_exit_unwrap();
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let mut cmd = Command::new(command_string);
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for arg in elems {
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cmd.arg(arg);
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}
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cmd
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};
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debug!("Calling: {:?}", command);
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if !command
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.status()
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.map_err(Error::from)
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.map_err_trace_exit_unwrap()
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.success()
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{
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exit(1)
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}
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drop(files);
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} else {
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let out = rt.stdout();
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let mut outlock = out.lock();
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let basesep = if rt.cli().occurrences_of("seperator") != 0 { // checker for default value
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rt.cli().value_of("seperator").map(String::from)
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} else {
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None
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};
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let mut sep_width = 80; // base width, automatically overridden by wrap width
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// Helper to build the seperator with a base string `sep` and a `width`
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let build_seperator = |sep: String, width: usize| -> String {
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sep.repeat(width / sep.len())
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};
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if rt.cli().is_present("compile-md") {
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let viewer = MarkdownViewer::new(&rt);
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let seperator = basesep.map(|s| build_seperator(s, sep_width));
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entries
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.enumerate()
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.for_each(|(n, entry)| {
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if n != 0 {
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seperator
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.as_ref()
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.map(|s| writeln!(outlock, "{}", s).to_exit_code().unwrap_or_exit());
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}
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if let Err(e) = viewer.view_entry(&entry, &mut outlock) {
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handle_error(e);
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}
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rt.report_touched(entry.get_location()).unwrap_or_exit();
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});
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} else {
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let mut viewer = StdoutViewer::new(view_header, !hide_content);
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if rt.cli().occurrences_of("autowrap") != 0 {
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let width = rt.cli().value_of("autowrap").unwrap(); // ensured by clap
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let width = usize::from_str(width).unwrap_or_else(|e| {
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error!("Failed to parse argument to number: autowrap = {:?}",
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rt.cli().value_of("autowrap").map(String::from));
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error!("-> {:?}", e);
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::std::process::exit(1)
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});
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// Copying this value over, so that the seperator has the right len as well
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sep_width = width;
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viewer.wrap_at(width);
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}
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let seperator = basesep.map(|s| build_seperator(s, sep_width));
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entries
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.enumerate()
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.for_each(|(n, entry)| {
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if n != 0 {
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seperator
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.as_ref()
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.map(|s| writeln!(outlock, "{}", s).to_exit_code().unwrap_or_exit());
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}
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if let Err(e) = viewer.view_entry(&entry, &mut outlock) {
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handle_error(e);
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}
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rt.report_touched(entry.get_location()).unwrap_or_exit();
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});
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}
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}
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Ok(())
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}
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fn build_cli<'a>(app: App<'a, 'a>) -> App<'a, 'a> {
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ui::build_ui(app)
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}
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fn name() -> &'static str {
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env!("CARGO_PKG_NAME")
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}
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fn description() -> &'static str {
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"View entries (readonly)"
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}
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fn version() -> &'static str {
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env!("CARGO_PKG_VERSION")
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}
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}
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fn create_tempfile_for<'a>(entry: &FileLockEntry<'a>, view_header: bool, hide_content: bool)
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-> (tempfile::NamedTempFile, String)
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{
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let mut tmpfile = tempfile::NamedTempFile::new()
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.map_err(Error::from)
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.map_err_trace_exit_unwrap();
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if view_header {
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let hdr = toml::ser::to_string_pretty(entry.get_header())
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.map_err(Error::from)
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.map_err_trace_exit_unwrap();
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let _ = tmpfile.write(format!("---\n{}---\n", hdr).as_bytes())
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.map_err(Error::from)
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.map_err_trace_exit_unwrap();
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}
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if !hide_content {
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let _ = tmpfile.write(entry.get_content().as_bytes())
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.map_err(Error::from)
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.map_err_trace_exit_unwrap();
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}
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let file_path = tmpfile
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.path()
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.to_str()
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.map(String::from)
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.ok_or_else(|| Error::from(err_msg("Cannot build path")))
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.map_err_trace_exit_unwrap();
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(tmpfile, file_path)
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}
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fn handle_error(e: ::libimagentryview::error::Error) {
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use libimagentryview::error::Error;
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match e {
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Error::Io(e) => Err(e).to_exit_code().unwrap_or_exit(),
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Error::Other(e) => Err(e).map_err_trace_exit_unwrap()
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}
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}
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