chore(installer): add script for automatically generated version in .nsi

BREAKING CHANGE:

Now script has to be run before automatically creating qTox installer,
otherwise there'll be something broken.

Closes #2655.

windows/qtox-nsi-version.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+#
+#    Copyright © 2016 Zetok Zalbavar <zetok@openmailbox.org>
+#
+#    This program 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.
+#
+#    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# script to append correct qTox version to `.nsi` files from
+# `git describe`
+#
+# requires:
+#  * files `qtox.nsi` and `qtox64.nsi` in working dir
+#  * git – tags in format `v0.0.0`
+#  * GNU sed
+
+# usage:
+#
+#   ./$script
+
+set -eu -o pipefail
+
+
+# from e.g. `v123.456.789-321-asdf` get `123.456.789` part
+get_version() {
+    git describe --tags \
+    | sed -r \
+        -e 's/^v//' \
+        -e 's/^(([[:digit:]]+\.){2}[[:digit:]]+)-.*/\1/'
+}
+
+
+# append version to .nsi files after a certain line
+append_version() {
+    local after_line='	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "DisplayName" "qTox"'
+    local append='	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "DisplayVersion"'
+
+    for nsi in *.nsi
+    do
+        sed -i "/$after_line/a\\$append \"$(get_version)\"" "$nsi"
+    done
+}
+
+append_version

windows/qtox.nsi

@@ -281,7 +281,6 @@ Section "Install"
 	${WriteRegStr} "${REG_ROOT}" "${REG_APP_PATH}" "" "$INSTDIR\${MAIN_APP_EXE}"
 	${WriteRegStr} "${REG_ROOT}" "${REG_APP_PATH}" "Path" "$INSTDIR\bin\"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "DisplayName" "qTox"
-	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "DisplayVersion" "1.0"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "Publisher" "The qTox Project"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "UninstallString" "$INSTDIR\uninstall.exe"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "URLInfoAbout" "https://qtox.github.io"

windows/qtox64.nsi

@@ -281,7 +281,6 @@ Section "Install"
 	${WriteRegStr} "${REG_ROOT}" "${REG_APP_PATH}" "" "$INSTDIR\${MAIN_APP_EXE}"
 	${WriteRegStr} "${REG_ROOT}" "${REG_APP_PATH}" "Path" "$INSTDIR\bin\"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "DisplayName" "qTox"
-	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "DisplayVersion" "1.0"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "Publisher" "The qTox Project"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "UninstallString" "$INSTDIR\uninstall.exe"
 	${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "URLInfoAbout" "https://qtox.github.io"