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# Functions for printing messages
#
# Copyright (C) 2018, 2019 Patrick McDermott
#
# This file is part of opkbuild.
#
# opkbuild is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# opkbuild 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with opkbuild.  If not, see <http://www.gnu.org/licenses/>.

## @brief Print an error message and exit
## @details \fBob_error\fP prints \fIarguments\fP according to \fIformat\fP and
##          then exits the application.
## @operand format    req The format string.  See \fBprintf\fP(1) for the syntax
##                        of \fIformat\fP.
## @operand arguments opt Arguments to be printed, as referenced by
##                        \fIformat\fP.
## @return This function does not return.  It causes the application to exit
##         with an exit status of 1.
## @stderr This function prints the formatted message, preceded by the program
##         name and "Error:", to stderr.
## @pure no This function causes the current shell to exit.
ob_error()
{
	local format="${1}"
	shift 1

	printf "$(_get_msg 'output_error_format')\n" "${0##*/}" "${@}" >&2

	exit 1
}

## @brief Print a warning message
## @details \fBob_warn\fP prints \fIarguments\fP according to \fIformat\fP.
## @operand format    req The format string.  See \fBprintf\fP(1) for the syntax
##                        of \fIformat\fP.
## @operand arguments opt Arguments to be printed, as referenced by
##                        \fIformat\fP.
## @return Returns 0.
## @stderr This function prints the formatted message, preceded by the program
##         name and "Warning:", to stderr.
## @pure yes This function has no side effects.
ob_warn()
{
	local format="${1}"
	shift 1

	printf "$(_get_msg 'output_warning_format')\n" "${0##*/}" "${@}" >&2

	return 0
}

## @brief Print an informational message
## @details \fBob_warn\fP prints \fIarguments\fP according to \fIformat\fP.
## @operand format    req The format string.  See \fBprintf\fP(1) for the syntax
##                        of \fIformat\fP.
## @operand arguments opt Arguments to be printed, as referenced by
##                        \fIformat\fP.
## @return Returns 0.
## @stderr This function prints the formatted message, preceded by the program
##         name, to stderr.
## @pure yes This function has no side effects.
ob_info()
{
	local format="${1}"
	shift 1

	printf "$(_get_msg 'output_info_format')\n" "${0##*/}" "${@}" >&2

	return 0
}

_ob_error_msg()
{
	local msgid="${1}"
	shift 1

	ob_error "$(_ob_get_msg "${msgid}")" "${@}"

	return 0
}

_ob_warn_msg()
{
	local msgid="${1}"
	shift 1

	ob_warn "$(_ob_get_msg "${msgid}")" "${@}"

	return 0
}

_ob_info_msg()
{
	local msgid="${1}"
	shift 1

	ob_info "$(_ob_get_msg "${msgid}")" "${@}"

	return 0
}