scripts: Remove non-Git VCS support

Mercurial branches remain in source-listing and cleanup helpers after
Subversion support was retired. SCST development now uses Git.

Remove Mercurial detection and commands together with stale Subversion
wording. Preserve the existing no-VCS source-list fallback and all Git
behavior.

scripts/clean-source-tree

@@ -7,20 +7,10 @@ usage() {
     exit 1
 }
 
-word_in_list() {
-    local a word=$1
-
-    shift
-    for a in "$@"; do
-	[ "$word" = "$a" ] && return 0
-    done
-    return 1
-}
-
 remove_empty_directories() {
     find . -depth -type d |
         sed 's|^\./||' |
-        grep -Ev '^\.$|^\.svn/|/\.svn/|/\.svn$|^\.hg/|^\.hg$|^\.git/|^\.git$' |
+        grep -Ev '^\.$|^\.git/|^\.git$' |
         while read -r d; do
 	    for f in "$d"/{*,.*}; do
 		if ! [ -e "$f" ]; then
@@ -31,13 +21,11 @@ remove_empty_directories() {
 	done
 }
 
-exclude=("TAGS")
 git_options=(-e TAGS)
 
 while [ "${1#-}" != "$1" ]; do
     case "$1" in
 	-x)
-	    exclude+=("$2")
 	    git_options+=(-e "$2")
 	    shift; shift;;
 	*)
@@ -55,14 +43,8 @@ for d in "${@-.}"; do
         fi
         git clean -f -d -x "${git_options[@]}" >/dev/null
         remove_empty_directories
-      elif [ -e .hg ] || [ -e ../.hg ]; then
-        if ! type -p hg >&/dev/null; then
-          echo "$0: hg: not found."
-          exit 0
-        fi
-        hg purge --all
       else
-        echo "$0: $d: not administered by Subversion, Git or Mercurial."
+        echo "$0: $d: not administered by Git."
       fi
     fi
   )

scripts/generate-kernel-patch

@@ -4,7 +4,7 @@ set -o pipefail
 
 ############################################################################
 #
-# Script for converting the SCST source tree as it exists in the Subversion
+# Script for converting the SCST source tree as it exists in the Git
 # repository to a Linux kernel patch.
 #
 # Copyright (C) 2008-2020 Bart Van Assche <bvanassche@acm.org>
@@ -214,7 +214,7 @@ srpt="true"
 
 if [ ! -e scst ] || [ ! -e iscsi-scst ] || [ ! -e srpt ] ||
        [ ! -e scst_local ]; then
-  echo "Please run this script from inside the SCST subversion source tree."
+  echo "Please run this script from inside the SCST Git source tree."
   exit 1
 fi
 

scripts/list-non-source-files

@@ -2,19 +2,6 @@
 
 export LC_ALL=C
 
-prefix_matches() {
-  local f
-
-  f="$1"
-  shift
-  for s in "$@"; do
-    if [ "$f" = "$s" ] || [ "${f#"$s/"}" != "$f" ]; then
-      return 0
-    fi
-  done
-  return 1
-}
-
 for d in "${@-.}"; do
 (
   cd "$d" &&
@@ -26,23 +13,6 @@ for d in "${@-.}"; do
       done
     while { read -r g; } <&3; do echo "$g"; done
     exec 3<&-
-  elif hg branch >&/dev/null; then
-    subrepos=$(if [ -e .hgsub ]; then sed 's/ = .*//' .hgsub; fi)""
-    exec 3< <(find . -type f | cut -c3- | grep -Ev '^$|^\.hg/' | sort)
-    hg locate |
-      sort |
-      while read -r f; do
-        while { read -r g; } <&3 && [ "$g" '<' "$f" ]; do
-          if ! prefix_matches "$g" "$subrepos"; then
-            echo "$g"
-          fi
-        done
-      done
-    while { read -r g; } <&3; do echo "$g"; done
-    exec 3<&-
-    for s in $subrepos; do
-      $0 "$s"
-    done
   else
     echo "Ignored directory $PWD"
   fi

scripts/list-source-files

@@ -5,8 +5,7 @@ list_source_files() {
 
   d="$(cd "$1" && echo "$PWD")"
   r="$d"
-  while [ "$r" != "/" ] && [ ! -e "$r/.git" ] &&
-	[ ! -e "$r/.hg" ]; do
+  while [ "$r" != "/" ] && [ ! -e "$r/.git" ]; do
     r="$(dirname "$r")"
   done
 
@@ -17,14 +16,6 @@ list_source_files() {
     else
       echo "Ignored directory $1" >&2
     fi
-  elif [ -e "$r/.hg" ]; then
-    subdir="${d#"${r}"}"
-    if [ -n "${subdir}" ]; then
-      subdir="${subdir#/}/"
-      hg manifest | sed -n "s|^$subdir||p"
-    else
-      hg manifest
-    fi
   else
     (
       cd "$d" &&

scripts/run-regression-tests

@@ -90,7 +90,7 @@ function test_scst_tree_patches {
 }
 
 # Copy the entire SCST source code tree from "$1" into the current directory.
-# Only copy those files which are administered by Subversion.
+# Only copy files tracked by Git.
 function duplicate_scst_source_tree {
   if [ -e "$1/AskingQuestions" ]; then
     ( set -o pipefail
@@ -564,7 +564,7 @@ function run_make_htmldocs {
 export LC_ALL=C
 
 if [ ! -e scst ] || [ ! -e iscsi-scst ] || [ ! -e srpt ]; then
-  echo "Please run this script from inside the SCST subversion source tree."
+  echo "Please run this script from inside the SCST Git source tree."
   exit 1
 fi