129 lines
3.7 KiB
Rust
129 lines
3.7 KiB
Rust
//
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// imag - the personal information management suite for the commandline
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// Copyright (C) 2015-2018 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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#![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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#[macro_use] extern crate log;
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extern crate clap;
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extern crate regex;
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extern crate libimagstore;
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#[macro_use] extern crate libimagrt;
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extern crate libimagerror;
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use std::io::Write;
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use regex::Regex;
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use libimagrt::setup::generate_runtime_setup;
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use libimagstore::store::Entry;
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use libimagerror::trace::MapErrTrace;
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use libimagerror::exit::ExitUnwrap;
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use libimagerror::io::ToExitCode;
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mod ui;
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struct Options {
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files_with_matches: bool,
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count: bool,
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}
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fn main() {
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let version = make_imag_version!();
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let rt = generate_runtime_setup("imag-grep",
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&version,
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"grep through entries text",
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ui::build_ui);
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let opts = Options {
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files_with_matches : rt.cli().is_present("files-with-matches"),
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count : rt.cli().is_present("count"),
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};
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let mut count : usize = 0;
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let pattern = rt
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.cli()
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.value_of("pattern")
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.map(Regex::new)
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.unwrap() // ensured by clap
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.unwrap_or_else(|e| {
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error!("Regex building error: {:?}", e);
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::std::process::exit(1)
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});
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let overall_count = rt
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.store()
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.entries()
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.map_err_trace_exit_unwrap(1)
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.into_get_iter()
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.filter_map(|res| res.map_err_trace_exit_unwrap(1))
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.filter(|entry| pattern.is_match(entry.get_content()))
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.map(|entry| show(&entry, &pattern, &opts, &mut count))
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.count();
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let mut out = ::std::io::stdout();
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if opts.count {
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let _ = writeln!(out, "{}", count).to_exit_code().unwrap_or_exit();
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} else if !opts.files_with_matches {
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let _ = writeln!(out, "Processed {} files, {} matches, {} nonmatches",
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overall_count,
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count,
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overall_count - count)
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.to_exit_code()
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.unwrap_or_exit();
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}
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}
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fn show(e: &Entry, re: &Regex, opts: &Options, count: &mut usize) {
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let mut out = ::std::io::stdout();
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if opts.files_with_matches {
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let _ = writeln!(out, "{}", e.get_location()).to_exit_code().unwrap_or_exit();
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} else if opts.count {
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*count += 1;
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} else {
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let _ = writeln!(out, "{}:", e.get_location()).to_exit_code().unwrap_or_exit();
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for capture in re.captures_iter(e.get_content()) {
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for mtch in capture.iter() {
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if let Some(m) = mtch {
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let _ = writeln!(out, " '{}'", m.as_str()).to_exit_code().unwrap_or_exit();
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}
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}
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}
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let _ = writeln!(out, "").to_exit_code().unwrap_or_exit();
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}
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}
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