🔖 Initial v1.0.0 release

svn-to-git-convert.sh

@@ -0,0 +1,149 @@
+#!/bin/bash
+# Author: Rikj000
+
+# Help function
+usage() {
+    cat << EOF
+
+  SVN-to-Git-convert - v1.0.0
+  Simple "bash" script to convert local SVN (Subversion) repositories to local Git repositories!
+
+  Usage:
+    svn-to-git-convert [options]
+
+  Example:
+    svn-to-git-convert -s="/path/to/svn/input/repo" -g="/path/to/git/output/repo"
+
+  Optional options:
+    -h, -help                   Show this help.
+    -u, -update                 Update SVN-to-Git-convert to the latest version.
+    -s, -svn_input_dir=<path>   Path to local input SVN repository, defaults to current working directory.
+    -g, -git_output_dir=<path>  Path to local output Git repository, defaults to "output" folder above current working directory.
+EOF
+
+    exit 0;
+}
+
+# Update function
+update() {
+    echo "Setting up installation directory helpers...";
+    INSTALLATION_FILE=$(realpath "$(dirname "$0")/$(basename "$0")");
+    INSTALLATION_DIR=$(dirname "$INSTALLATION_FILE");
+
+    echo "Moving to the installation directory... ($INSTALLATION_DIR)";
+    cd "$INSTALLATION_DIR/";
+
+    echo "Pulling + switching to latest version...";
+    git pull;
+    git checkout $(git tag -l | tail -n 1);
+    exit;
+}
+
+# ANSI text coloring
+GREEN='\033[0;32m';
+RED='\033[0;31m';
+END='\033[m';
+
+# Initialize default input/output directory values
+SVN_INPUT_DIR=$(pwd);
+GIT_OUTPUT_DIR="$SVN_INPUT_DIR/../output";
+
+# Loop through arguments and process them
+for arg in "$@"
+do
+    case $arg in
+        -s=*|-svn_input_dir=*)
+        SVN_INPUT_DIR="${arg#*=}";
+        shift
+        ;;
+        -g=*|-git_output_dir=*)
+        GIT_OUTPUT_DIR="${arg#*=}";
+        shift
+        ;;
+        -h|-help)
+        usage;
+        shift
+        ;;
+        -u|-update)
+        update;
+        shift
+        ;;
+        *)
+        echo "";
+        echo -e "${RED}  🙉  svn-to-git-convert - Illegal argument(s) used!${END}";
+        echo "";
+        echo "  Please see the 'svn-to-git-convert -help' output below for the correct usage:";
+        usage;
+        shift # Remove generic argument from processing
+        ;;
+    esac
+done
+
+# SVN to Git convert logic
+echo "Setting up SVN + Git migration directory helpers...";
+SVN_MIGRATION_DIR='/tmp/svn-migration';
+SVN_REPO_DIR="$SVN_MIGRATION_DIR/repo";
+SVN_CHECKOUT_DIR="$SVN_MIGRATION_DIR/checkout";
+
+GIT_MIGRATION_DIR='/tmp/git-migration';
+GIT_REPO_DIR="$GIT_MIGRATION_DIR/repo";
+
+echo "Creating temporary migration directories...";
+mkdir "$SVN_MIGRATION_DIR" "$GIT_MIGRATION_DIR";
+
+echo "Copying the input SVN repository to the migration directory...";
+cp -r "$SVN_INPUT_DIR" "$SVN_REPO_DIR";
+
+echo "Checking out the SVN repository at the latest revision... (takes a while)";
+svn checkout \
+    "file://$SVN_REPO_DIR/@HEAD" \
+    "$SVN_CHECKOUT_DIR/";
+
+echo "Moving to the SVN checkout folder...";
+cd "$SVN_CHECKOUT_DIR/";
+
+echo "Querying SVN checkout version history for 'authors-file.txt'...";
+svn log -q | \
+awk -F '|' '/^r/ {gsub(/ /, "", $2); sub(" $", "", $2); print $2" = "$2" <"$2">"}' | \
+sort -u > "$GIT_MIGRATION_DIR/authors-file.txt";
+
+echo "Moving to the Git migration folder...";
+cd "$GIT_MIGRATION_DIR/";
+
+echo "Converting the SVN repository to a Git repository... (takes a while)";
+git svn clone \
+    "file://$SVN_REPO_DIR/" \
+    "$GIT_REPO_DIR" \
+    --authors-file="$GIT_MIGRATION_DIR/authors-file.txt" \
+    --revision 1:HEAD;
+
+echo "Moving to the new Git repo folder...";
+cd "$GIT_REPO_DIR/";
+
+echo "Moving the tags and any remote refs to local branches...";
+for t in $(git for-each-ref --format='%(refname:short)' refs/remotes/tags);
+    do git tag ${t/tags\//} $t && git branch -D -r $t;
+done;
+
+echo "Moving any references under refs/remote and turn them to local branches...";
+for b in $(git for-each-ref --format='%(refname:short)' refs/remotes);
+    do git branch $b refs/remotes/$b && git branch -D -r $b;
+done;
+
+for p in $(git for-each-ref --format='%(refname:short)' | grep @);
+    do git branch -D $p;
+done;
+
+echo "Removing the temporary migration branch...";
+git branch -D git-svn;
+
+echo "Converting any large files to LFS objects...";
+git lfs migrate import --everything --above=99MB --yes;
+
+echo "Copying the output Git repository to the output Git directory...";
+cp -r "$GIT_REPO_DIR" "$GIT_OUTPUT_DIR";
+
+echo "Cleaning up temporary migration directories...";
+yes | rm -r "$SVN_MIGRATION_DIR" "$GIT_MIGRATION_DIR";
+
+echo -e "${GREEN}svn-to-git-convert has been executed to its end!${CLOSE}";