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locks; strict;
comment	@# @;


1.1
date	2017.06.01.01.58.34;	author jlam;	state Exp;
branches;
next	;
commitid	ZKq8jUL9nZlDZBTz;


desc
@@


1.1
log
@Import pkgtasks-1-1.9 as pkgsrc/pkgtools/pkgtasks.

pkgtasks is a shell script library to ease writing POSIX-compliant
shell scripts to handle common tasks during installation or removal
of a package, e.g.,

  * creating groups and users needed by the package

  * creating and removing directories with special permissions and
    ownership,

  * copying example config files to their final locations during
    package installation, and removing them during package removal
    if they don't differ from the example ones,

  * reminding the user of files that may be customized after
    package installation.
@
text
@# Copyright (c) 2017 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Johnny C. Lam.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. 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.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# NAME
#	say.subr -- write to standard output with a tag
#
# SYNOPSIS
#	task_say <tag> [string ...]
#
# DESCRIPTION
#	The task_say function writes any specified operands, separated by
#	single blank (" ") characters and followed by a newline ("\n")
#	character, to the standard output.  The tag specifies the type of
#	information that is written.
#
#	If the terminal supports color, then the tags cause the output to
#	be written in a matching color:
#
#		info		cyan
#		error		red
#		pass		green
#		skip		blue
#		warn		yellow
#		- or none	white
#
# RETURN VALUES
#	Returns 0 on success, and >0 if an error occurs.
#
# ENVIRONMENT
#	The following variables are used if they are set:
#
#	PRINTF	The name or path to the printf(1) utility.
#

__task_say__="yes"

_task_say_ansi_color()
{
	: ${TPUT:=tput}

	case $__task_say_ansi_color__ in
	yes)	return 0 ;;
	no)	return 1 ;;
	esac

	# Only attempt to output ANSI color sequences if standard output
	# is connected to a terminal.
	#
	[ -t 1 ] || return 1

	local colors
	local property
	for property in Co colors; do
		colors=$( ${TPUT} Co 2>/dev/null )
		if [ $? -eq 0 ] && [ "$colors" -gt 2 ]; then
			__task_say_ansi_color__="yes" && return 0
		fi
	done
	__task_say_ansi_color="no" && return 1
}

task_say()
{
	: ${PRINTF:=printf}

	local none="\033[0m"
	local blue="\033[34m"
	local cyan="\033[36m"
	local green="\033[32m"
	local red="\033[31m"
	local yellow="\033[33m"

	local color
	local msgtype="$1"; shift
	case $msgtype in
	info)	color=$cyan ;;
	error)	color=$red ;;
	pass)	color=$green ;;
	skip)	color=$blue ;;
	warn)	color=$yellow ;;
	-|none)	color=$none ;;
	esac

	if _task_say_ansi_color && [ -n "$color" ]; then
		${PRINTF} "$color$*$none\n"
	else
		echo "$*"
	fi
}

# Static variable for whether the terminal supports ANSI colors.
__task_say_ansi_color__=
@
