CI: tidy up scripts

 - Add SPDX headers
 - Indent consistently (tabs, not a mix of 2-space, 4-space, and tabs)

The scripts were originally added without a license header.
Since they are simple, and re-usable, and not particularly
interesting, I've made the license explicitly 2-clause BSD.
This is unlike the rest of Calamares, which is GPLv3+; the
build system and support scripts are not the software itself.

3 files changed, 116 insertions, 80 deletions

diff --git a/ci/txcheck.sh b/ci/txcheck.sh
index 8eef04571..9ce8f0c30 100644
--- a/ci/txcheck.sh
+++ b/ci/txcheck.sh
@@ -37,18 +37,18 @@ TX_FILE_LIST="lang/calamares_en.ts lang/python.pot src/modules/dummypythonqt/lan
 # normally used much later in the script.
 tx_cleanup()
 {
-    # Cleanup artifacs of checking
-    git worktree remove --force build-txcheck-head
-    git worktree remove --force build-txcheck-prev
-    git branch -D build-txcheck-head > /dev/null 2>&1
+	# Cleanup artifacs of checking
+	git worktree remove --force build-txcheck-head
+	git worktree remove --force build-txcheck-prev
+	git branch -D build-txcheck-head > /dev/null 2>&1
 }
 
 if test "x$1" = "x--cleanup" ; then
-    tx_cleanup
-    exit 0
+	tx_cleanup
+	exit 0
 fi
 if test "x$1" = "x--help" ; then
-    sed -e '1,/USAGE/d' -e '/END.USAGE/,$d' < "$0"
+	sed -e '1,/USAGE/d' -e '/END.USAGE/,$d' < "$0"
 fi
 test -z "$1" || { echo "! Usage: txcheck.sh [--cleanup]" ; exit 1 ; }
 
@@ -59,22 +59,22 @@ test -z "$1" || { echo "! Usage: txcheck.sh [--cleanup]" ; exit 1 ; }
 XMLLINT=""
 for _xmllint in xmllint
 do
-  $_xmllint --version > /dev/null 2>&1 && XMLLINT=$_xmllint
-  test -n "$XMLLINT" && break
+	$_xmllint --version > /dev/null 2>&1 && XMLLINT=$_xmllint
+	test -n "$XMLLINT" && break
 done
 
 # Distinguish GNU date from BSD date
 if date +%s -d "1 week ago" > /dev/null 2>&1 ; then
-    last_week() { date +%s -d "1 week ago" ; }
+	last_week() { date +%s -d "1 week ago" ; }
 else
-    last_week() { date -v1w +%s; }
+	last_week() { date -v1w +%s; }
 fi
 
 # Distinguish GNU SHA executables from BSD ones
 if which sha256sum > /dev/null 2>&1 ; then
-    SHA256=sha256sum
+	SHA256=sha256sum
 else
-    SHA256=sha256
+	SHA256=sha256
 fi
 
 ### CHECK WORKING DIRECTORY
diff --git a/ci/txpull.sh b/ci/txpull.sh
index b320da300..734a689b5 100755
--- a/ci/txpull.sh
+++ b/ci/txpull.sh
@@ -1,4 +1,18 @@
 #!/bin/sh
+
+### LICENSE
+# === This file is part of Calamares - <https://github.com/calamares> ===
+#
+#   SPDX-License-Identifier: BSD-2-Clause
+#   SPDX-FileCopyrightText: 2017-2020 Adriaan de Groot <groot@kde.org>
+#   SPDX-FileCopyrightText: 2015-2016 Teo Mrnjavac <teo@kde.org>
+#
+#   This file is Free Software: you can redistribute it and/or modify
+#   it under the terms of the 2-clause BSD License.
+#
+### END LICENSE
+
+### USAGE
 #
 # Fetch the Transifex translations for Calamares and incorporate them
 # into the source tree, adding commits of the different files.
@@ -6,6 +20,8 @@
 # Run this (occasionally) at the top-level directory to get
 # new translations. See also CMakeLists.txt and ci/txstats.py
 # for update instructions.
+#
+### END USAGE
 
 ### INITIAL SETUP
 #
@@ -32,8 +48,8 @@ test -f "calamares.desktop" || { echo "! Not at Calamares top-level" ; exit 1 ;
 XMLLINT=""
 for _xmllint in xmllint
 do
-  $_xmllint --version > /dev/null 2>&1 && XMLLINT=$_xmllint
-  test -n "$XMLLINT" && break
+	$_xmllint --version > /dev/null 2>&1 && XMLLINT=$_xmllint
+	test -n "$XMLLINT" && break
 done
 # XMLLINT is optional
 
@@ -53,9 +69,9 @@ tx pull --force --source --all
 # so clean them up after pulling.
 #
 drop_language() {
-  rm -rf lang/python/"$1" src/modules/dummypythonqt/lang/"$1" lang/calamares_"$1".ts
-  grep -v "\\[$1]" calamares.desktop > calamares.desktop.new
-  mv calamares.desktop.new calamares.desktop
+	rm -rf lang/python/"$1" src/modules/dummypythonqt/lang/"$1" lang/calamares_"$1".ts
+	grep -v "\\[$1]" calamares.desktop > calamares.desktop.new
+	mv calamares.desktop.new calamares.desktop
 }
 
 drop_language es_ES
@@ -68,10 +84,10 @@ mv calamares.desktop.new calamares.desktop
 
 # And fixup the XML files like in txpush.sh
 if test -n "$XMLLINT" ; then
-  for TS_FILE in lang/calamares_*.ts
-  do
-    $XMLLINT --c14n11 "$TS_FILE" | { echo "<!DOCTYPE TS>" ; cat - ; } | $XMLLINT --format --encode utf-8 -o "$TS_FILE".new - && mv "$TS_FILE".new "$TS_FILE"
-  done
+	for TS_FILE in lang/calamares_*.ts
+	do
+		$XMLLINT --c14n11 "$TS_FILE" | { echo "<!DOCTYPE TS>" ; cat - ; } | $XMLLINT --format --encode utf-8 -o "$TS_FILE".new - && mv "$TS_FILE".new "$TS_FILE"
+	done
 fi
 
 
@@ -108,24 +124,24 @@ git diff --numstat src/modules | awk '($1==1 && $2==1){print $3}' | xargs git ch
 # Go through the Python modules; those with a lang/ subdir have their
 # own complete gettext-based setup.
 for MODULE_DIR in $(find src/modules -maxdepth 1 -mindepth 1 -type d) ; do
-  FILES=$(find "$MODULE_DIR" -name "*.py" -a -type f)
-  if test -n "$FILES" ; then
-    MODULE_NAME=$(basename ${MODULE_DIR})
-    if [ -d ${MODULE_DIR}/lang ]; then
-      # Convert PO files to MO files
-      for POFILE in $(find ${MODULE_DIR} -name "*.po") ; do
-        sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' $POFILE
-        msgfmt -o ${POFILE%.po}.mo $POFILE
-      done
-      git add --verbose ${MODULE_DIR}/lang/*
-      git commit "$AUTHOR" --message="i18n: [${MODULE_NAME}] $BOILERPLATE" | true
-    fi
-  fi
+	FILES=$(find "$MODULE_DIR" -name "*.py" -a -type f)
+	if test -n "$FILES" ; then
+		MODULE_NAME=$(basename ${MODULE_DIR})
+		if [ -d ${MODULE_DIR}/lang ]; then
+			# Convert PO files to MO files
+			for POFILE in $(find ${MODULE_DIR} -name "*.po") ; do
+				sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' $POFILE
+				msgfmt -o ${POFILE%.po}.mo $POFILE
+			done
+			git add --verbose ${MODULE_DIR}/lang/*
+			git commit "$AUTHOR" --message="i18n: [${MODULE_NAME}] $BOILERPLATE" | true
+		fi
+	fi
 done
 
 for POFILE in $(find lang -name "python.po") ; do
-  sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' $POFILE
-  msgfmt -o ${POFILE%.po}.mo $POFILE
+	sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' $POFILE
+	msgfmt -o ${POFILE%.po}.mo $POFILE
 done
 git add --verbose lang/python*
 git commit "$AUTHOR" --message="i18n: [python] $BOILERPLATE" | true
diff --git a/ci/txpush.sh b/ci/txpush.sh
index 6882fa523..3195f42b4 100755
--- a/ci/txpush.sh
+++ b/ci/txpush.sh
@@ -1,13 +1,33 @@
 #!/bin/sh
+
+### LICENSE
+# === This file is part of Calamares - <https://github.com/calamares> ===
+#
+#   SPDX-License-Identifier: BSD-2-Clause
+#   SPDX-FileCopyrightText: 2017-2020 Adriaan de Groot <groot@kde.org>
+#   SPDX-FileCopyrightText: 2015-2016 Teo Mrnjavac <teo@kde.org>
+#
+#   This file is Free Software: you can redistribute it and/or modify
+#   it under the terms of the 2-clause BSD License.
+#
+### END LICENSE
+
+### USAGE
 #
 # Extract translations from Calamares source and send them
-# to Transifex.
+# to Transifex. Also (forcibly) updates the git "translation"
+# tag to document that source texts were updated and sent;
+# this is used by txcheck.sh to ensure that there's enough
+# time between updates and releases, and that strings don't
+# change between updates and releases.
 #
 # Run this at the top-level.
 #
 # Use the --no-tx option to do the extraction, but not the
 # pushing-to-Transifex part. This can be useful to check for
 # new strings or when testing the tools themselves.
+#
+### END USAGE
 
 ### INITIAL SETUP
 #
@@ -28,21 +48,21 @@ test -f ".tx/config" || { echo "! Not at Calamares top-level" ; exit 1 ; }
 test -f "calamares.desktop" || { echo "! Not at Calamares top-level" ; exit 1 ; }
 
 if test "x$1" = "x--no-tx" ; then
-  # tx is the transifex command -- eat its arguments and do nothing
-  tx() {
-    echo "Skipped tx $*"
-  }
-  # txtag is used to tag in git to measure changes -- skip it too
-  txtag() {
-    echo "Skipped tx tagging."
-  }
+	# tx is the transifex command -- eat its arguments and do nothing
+	tx() {
+		echo "Skipped tx $*"
+	}
+	# txtag is used to tag in git to measure changes -- skip it too
+	txtag() {
+		echo "Skipped tx tagging."
+	}
 else
-  # tx is the regular transifex command
-  # txtag is used to tag in git to measure changes
-  txtag() {
-    git tag -f translation
-    git push --force origin translation
-  }
+	# tx is the regular transifex command
+	# txtag is used to tag in git to measure changes
+	txtag() {
+		git tag -f translation
+		git push --force origin translation
+	}
 fi
 
 
@@ -52,18 +72,18 @@ fi
 LUPDATE=""
 for _lupdate in lupdate-qt5 lupdate
 do
-  export QT_SELECT=5
-  $_lupdate -version > /dev/null 2>&1 || export QT_SELECT=qt5
-  $_lupdate -version > /dev/null 2>&1 && LUPDATE=$_lupdate
-  test -n "$LUPDATE" && break
+	export QT_SELECT=5
+	$_lupdate -version > /dev/null 2>&1 || export QT_SELECT=qt5
+	$_lupdate -version > /dev/null 2>&1 && LUPDATE=$_lupdate
+	test -n "$LUPDATE" && break
 done
 test -n "$LUPDATE" || { echo "! No working lupdate" ; lupdate -version ; exit 1 ; }
 
 XMLLINT=""
 for _xmllint in xmllint
 do
-  $_xmllint --version > /dev/null 2>&1 && XMLLINT=$_xmllint
-  test -n "$XMLLINT" && break
+	$_xmllint --version > /dev/null 2>&1 && XMLLINT=$_xmllint
+	test -n "$XMLLINT" && break
 done
 # XMLLINT is optional
 
@@ -82,8 +102,8 @@ $LUPDATE -no-obsolete $_srcdirs -ts lang/calamares_en.ts
 # $LUPDATE -no-obsolete -extensions cxxtr src/libcalamares/locale -ts lang/tz_en.ts
 
 if test -n "$XMLLINT" ; then
-  TS_FILE="lang/calamares_en.ts"
-  $XMLLINT --c14n11 "$TS_FILE" | { echo "<!DOCTYPE TS>" ; cat - ; } | $XMLLINT --format --encode utf-8 -o "$TS_FILE".new - && mv "$TS_FILE".new "$TS_FILE"
+	TS_FILE="lang/calamares_en.ts"
+	$XMLLINT --c14n11 "$TS_FILE" | { echo "<!DOCTYPE TS>" ; cat - ; } | $XMLLINT --format --encode utf-8 -o "$TS_FILE".new - && mv "$TS_FILE".new "$TS_FILE"
 fi
 
 tx push --source --no-interactive -r calamares.calamares-master
@@ -103,29 +123,29 @@ PYGETTEXT="xgettext --keyword=_n:1,2 -L python"
 
 SHARED_PYTHON=""
 for MODULE_DIR in $(find src/modules -maxdepth 1 -mindepth 1 -type d) ; do
-  FILES=$(find "$MODULE_DIR" -name "*.py" -a -type f)
-  if test -n "$FILES" ; then
-    MODULE_NAME=$(basename ${MODULE_DIR})
-    if [ -d ${MODULE_DIR}/lang ]; then
-      ${PYGETTEXT} -p ${MODULE_DIR}/lang -d ${MODULE_NAME} -o ${MODULE_NAME}.pot ${MODULE_DIR}/*.py
-      POTFILE="${MODULE_DIR}/lang/${MODULE_NAME}.pot"
-      if [ -f "$POTFILE" ]; then
-        sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' "$POTFILE"
-        tx set -r calamares.${MODULE_NAME} --source -l en "$POTFILE"
-        tx push --source --no-interactive -r calamares.${MODULE_NAME}
-      fi
-    else
-      SHARED_PYTHON="$SHARED_PYTHON $FILES"
-    fi
-  fi
+	FILES=$(find "$MODULE_DIR" -name "*.py" -a -type f)
+	if test -n "$FILES" ; then
+		MODULE_NAME=$(basename ${MODULE_DIR})
+		if [ -d ${MODULE_DIR}/lang ]; then
+			${PYGETTEXT} -p ${MODULE_DIR}/lang -d ${MODULE_NAME} -o ${MODULE_NAME}.pot ${MODULE_DIR}/*.py
+			POTFILE="${MODULE_DIR}/lang/${MODULE_NAME}.pot"
+			if [ -f "$POTFILE" ]; then
+				sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' "$POTFILE"
+				tx set -r calamares.${MODULE_NAME} --source -l en "$POTFILE"
+				tx push --source --no-interactive -r calamares.${MODULE_NAME}
+			fi
+		else
+			SHARED_PYTHON="$SHARED_PYTHON $FILES"
+		fi
+	fi
 done
 
 if test -n "$SHARED_PYTHON" ; then
-  ${PYGETTEXT} -p lang -d python -o python.pot $SHARED_PYTHON
-  POTFILE="lang/python.pot"
-  sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' "$POTFILE"
-  tx set -r calamares.python --source -l en "$POTFILE"
-  tx push --source --no-interactive -r calamares.python
+	${PYGETTEXT} -p lang -d python -o python.pot $SHARED_PYTHON
+	POTFILE="lang/python.pot"
+	sed -i'' '/^"Content-Type/s/CHARSET/UTF-8/' "$POTFILE"
+	tx set -r calamares.python --source -l en "$POTFILE"
+	tx push --source --no-interactive -r calamares.python
 fi
 
 txtag