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#!/bin/bash
# xchangelog PKGNAME - open package changelog

XBPS_DISTDIR=$(xdistdir) || exit 1

pkg=$1
[ -z "$pkg" ] && pkg=$(basename "$PWD")

if [ -f "$pkg" ]; then
	template="$pkg"
elif [ -f "$pkg/template" ]; then
	template="$pkg/template"
elif [ -f "$XBPS_DISTDIR/srcpkgs/$pkg/template" ]; then
	template="$XBPS_DISTDIR/srcpkgs/$pkg/template"
else
	echo "No such template: $pkg" >&2
	exit 1
fi

. "$template"

if [ -z "$changelog" ]; then
	echo "No changelog defined in template" >&2
	exit 1
fi

if ! [ -t 1 ]; then
	curl -sL -- "$changelog"
elif curl -sLI -w "%{content_type}" -o /dev/null -- "$changelog" | grep -qi "^text/plain"; then
	if [ -n "$PAGER" ]; then
		curl -sL -- "$changelog" | "$PAGER"
	elif [[ "$changelog" = *".md" ]] && type mdless >/dev/null; then
		curl -sL -- "$changelog" | mdless
	elif type less >/dev/null; then
		curl -sL -- "$changelog" | less
	else
		curl -sL -- "$changelog"
	fi
else
	if type xdg-open >/dev/null; then
		xdg-open "$changelog"
	elif [ -n "$BROWSER" ]; then
		"$BROWSER" "$changelog"
	else
		echo 'Cannot open changelog in web browser, please install xdg-open or define $BROWSER' >&2
		exit 1
	fi
fi