Shin'ya M. > Updating rcs with 3 items... done

README.md

@@ -5,5 +5,12 @@ Those require a rather old version of [reposurgeon](http://catb.org/~esr/reposur
 on some systems (such as [NetBSD](https://www.netbsd.org)).
 
 ## Scripts
-* [Git to Subversion](git2svn) (in [Perl](https://www.perl.org))
-* [Subversion to Git](svn2git)
+
+### From `git`
+* [git2fossil](git2fossil)
+* [git2hg](git2hg)
+* [git2svn](git2svn)
+
+### From `svn`
+* [svn2fossil](svn2fossil)
+* [svn2git](svn2git)

git2fossil

@@ -0,0 +1,17 @@
+#!/bin/sh
+# Convert a git repository to fossil
+
+for i in fossil git; do
+    if ! command -v $i >/dev/null; then
+	echo "$i: command not found"
+	exit 1
+    fi
+done
+
+if [ -z "$1" ]; then
+printf "usage: %s repo-name\n" "$0"
+printf "requires an already cloned repository\n"
+exit 1
+fi
+
+(cd ${1}; git fast-export --all) | fossil import --git ${1}.fossil

git2hg

@@ -0,0 +1,59 @@
+#!/bin/sh
+# Convert git repositories to Mercurial
+# Extensions required: hg-fastimport
+
+clean() {
+    rm -rf ${1}.fi ${1}.fo ${1}.lift ${1}.map ${1}.opts
+}
+git_export() {
+    (cd ${1}-mirror ; repotool export) >${2}.git
+}
+
+git_mirror() {
+    repotool mirror ${1} ${2}-mirror
+}
+
+prepare() {
+    touch ${1}.opts
+    touch ${1}.map
+    touch ${1}.lift
+}
+
+hg_import() {
+    reposurgeon "script ${2}.opts" \
+		"read <${2}.git" \
+		"authors read <${2}.map" \
+		"sourcetype git" \
+		"prefer git" \
+		"script ${2}.lift" \
+		"legacy write >${2}.fo" \
+		"write >${2}.fi"
+
+    reposurgeon "read <${2}.fi" \
+		"prefer hg" \
+		"rebuild ${repo_name}-hg"
+    
+}
+
+print_usage() {
+    printf "usage: %s [export dir file] [mirror url repo_name] [migrate repo_name]\n" "$0"
+    exit 1
+}
+
+case $1 in
+    export)
+	git_export $2 $3
+	;;
+    mirror)
+	git_mirror $2 $3
+	;;
+    migrate)
+	prepare $2
+	hg_import $2
+	clean $2
+	;;
+    *)
+	print_usage
+	;;
+esac
+    

svn2fossil

@@ -0,0 +1,13 @@
+#!/bin/sh
+# svn2fossil
+# Convert a svn repository to fossil
+# Requires direct access to the host
+for i in fossil svnadmin; do
+    if ! command -v $i >/dev/null; then
+	echo "$i: command not found"
+	exit 1
+    fi
+done
+
+svnadmin dump $1 | fossil import --svn $1.fossil 
+