// Copyright 2010 Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
/// Print the contents of a document.
///
/// If the file cannot be opened for whatever reason, an error message is
/// printed to the output of the program instead of the contents of the file.
///
/// \param ui Object to interact with the I/O of the program.
/// \param file The file to print.
///
/// \return True if the file was printed, false otherwise.
static bool
cat_file(cmdline::ui* ui, const fs::path& file)
{
std::ifstream input(file.c_str());
if (!input) {
ui->err(F("Failed to open %s") % file);
return false;
}
std::string line;
while (std::getline(input, line).good())
ui->out(line);
input.close();
return true;
}
} // anonymous namespace
/// Default constructor for cmd_about.
cmd_about::cmd_about(void) : cli_command(
"about", "[authors|license|version]", 0, 1,
"Shows general program information")
{
}
/// Entry point for the "about" subcommand.
///
/// \param ui Object to interact with the I/O of the program.
/// \param cmdline Representation of the command line to the subcommand.
/// \param unused_user_config The runtime configuration of the program.
///
/// \return 0 if everything is OK, 1 if any of the necessary documents cannot be
/// opened.
int
cmd_about::run(cmdline::ui* ui, const cmdline::parsed_cmdline& cmdline,
const config::tree& UTILS_UNUSED_PARAM(user_config))
{
const fs::path docdir(utils::getenv_with_default(
"KYUA_DOCDIR", KYUA_DOCDIR));
