epm play.d: add PRODUCTALT and --product-alternatives

play.d/brave.sh

@@ -4,6 +4,7 @@ DESCRIPTION="Brave browser from the official site"
 
 PKGNAME=brave-browser
 SUPPORTEDARCHES="x86_64"
+PRODUCTALT="'' beta nightly"
 if [ "$2" = "beta" ] || epm installed $PKGNAME-beta ; then
     PKGNAME=$PKGNAME-beta
 fi

play.d/common.sh

@@ -12,15 +12,34 @@ get_latest_version()
     epm tool eget -q -O- "$URL/$1"
 }
 
+print_product_alt()
+{
+    [ -n "$1" ] || return
+    shift
+    echo "$*"
+}
+
 case "$1" in
     "--remove")
         epm remove $PKGNAME
         exit
         ;;
+    "--help")
+        if [ -n "$PRODUCTALT" ] ; then
+            echo "Help about additional parameters."
+            echo "Use epm play $(basename $0 .sh) [$(echo "$PRODUCTALT" | sed -e 's@ @|@g')]"
+        fi
+        [ -n "$TIPS" ] && echo "$TIPS"
+        exit
+        ;;
     "--package")
         echo "$PKGNAME"
         exit
         ;;
+    "--product-alternatives")
+        print_product_alt $PRODUCTALT
+        exit
+        ;;
     "--installed")
         epm installed $PKGNAME
         exit

play.d/vivaldi-codecs-ffmpeg-extra.sh

@@ -10,6 +10,7 @@ if [ "$2" = "snapshot" ] ; then
 fi
 
 BASEPKGNAME=vivaldi-$BRANCH
+PRODUCTALT="stable snapshot"
 PKGNAME=vivaldi-$BRANCH-codecs-ffmpeg-extra
 SUPPORTEDARCHES="x86_64"
 

play.d/vivaldi.sh

@@ -2,6 +2,7 @@
 
 DESCRIPTION="Vivaldi browser from the official site"
 
+PRODUCTALT="stable snapshot"
 BRANCH=stable
 if [ "$2" = "snapshot" ] || epm installed vivaldi-snapshot ; then
     BRANCH=snapshot

play.d/yandex-browser-codecs-ffmpeg-extra.sh

@@ -9,6 +9,7 @@ if [ "$2" = "beta" ] ; then
     PRODUCTDIR=/opt/yandex/browser-$BRANCH
 fi
 
+PRODUCTALT="stable beta"
 BASEPKGNAME=yandex-browser-$BRANCH
 PKGNAME=yandex-browser-$BRANCH-codecs-ffmpeg-extra
 SUPPORTEDARCHES="x86_64"

play.d/yandex-browser.sh

@@ -2,8 +2,9 @@
 
 PRODUCTDIR=/opt/yandex/browser
 DESCRIPTION="Yandex browser from the official site"
-TIPS="Run epm play yandex-browser beta to install beta version of the browser."
+TIPS="Run 'epm play yandex-browser beta' to install beta version of the browser."
 
+PRODUCTALT="stable beta"
 BRANCH=stable
 if [ "$2" = "beta" ] || epm installed yandex-browser-beta ; then
     BRANCH=beta