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[tor-commits] [tor/master] Add a script to install the scripts in scripts/git appropriately.



commit 78c9ff70529421de2301e4186a0912859548c552
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Tue Feb 25 14:59:41 2020 -0500

    Add a script to install the scripts in scripts/git appropriately.
    
    To run this, say something like
    
       TOR_DEVTOOL_DIR=~/bin scripts/git/git-install-tools.sh all
    
    To see what it would do, give it the -n flag.
    
    To get help, give it the -h flag.
---
 changes/ticket33451              |   3 +
 scripts/git/git-install-tools.sh | 189 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 192 insertions(+)

diff --git a/changes/ticket33451 b/changes/ticket33451
new file mode 100644
index 000000000..74dd6d1ad
--- /dev/null
+++ b/changes/ticket33451
@@ -0,0 +1,3 @@
+  o Minor features (developer tools):
+    - Add a script ("git-install-tools.sh") to install git hooks and helper
+      scripts.  Closes ticket 33451.
diff --git a/scripts/git/git-install-tools.sh b/scripts/git/git-install-tools.sh
new file mode 100755
index 000000000..ef8623a01
--- /dev/null
+++ b/scripts/git/git-install-tools.sh
@@ -0,0 +1,189 @@
+#!/usr/bin/env bash
+
+SCRIPT_NAME=$(basename "$0")
+SCRIPTS_DIR=$(dirname "$0")
+
+TOOL_NAMES=(push-all pull-all merge-forward list-tor-branches)
+
+function usage()
+{
+    echo "$SCRIPT_NAME [-h] [-n] [-v] [-f] <all|hooks|tools|aliases>"
+    echo
+    echo "  flags:"
+    echo "    -h: show this help text"
+    echo "    -n: dry-run"
+    echo "    -v: verbose mode"
+    echo "    -f: force-install even if \$TOR_DEVTOOLS_DIR looks fishy"
+    echo
+    echo "  modes:"
+    echo "    hooks:   install git hooks in this repository."
+    echo "    tools:   install scripts in \$TOR_DEVTOOLS_DIR"
+    echo "    aliases: set up global git aliases for git tools in \$TOR_DEVTOOLS_DIR"
+    echo "    all:     all of the above."
+}
+
+INSTALL_HOOKS=0
+INSTALL_TOOLS=0
+INSTALL_ALIASES=0
+
+DRY_RUN=0
+VERBOSE=0
+FORCE=0
+
+while getopts "hnfv" opt; do
+    case "$opt" in
+        h) usage
+           exit 0
+           ;;
+        n) DRY_RUN=1
+           ;;
+        v) VERBOSE=1
+           ;;
+        f) FORCE=1
+           ;;
+        *) echo
+           usage
+           exit 1
+           ;;
+    esac
+done
+
+for item in "${@:$OPTIND}"; do
+    case "$item" in
+        hooks) INSTALL_HOOKS=1
+               ;;
+        tools) INSTALL_TOOLS=1
+               ;;
+        aliases) INSTALL_ALIASES=1
+                 ;;
+        all) INSTALL_HOOKS=1
+             INSTALL_TOOLS=1
+             INSTALL_ALIASES=1
+             ;;
+        *) echo "Unrecognized mode '$item'"
+           usage
+           exit 1
+           ;;
+    esac
+done
+
+if [[ $VERBOSE = 1 ]]; then
+    function note()
+    {
+        echo "$@"
+    }
+else
+    function note()
+    {
+        true
+    }
+fi
+
+function fail()
+{
+    echo "$@" 1>&2
+    exit 1
+}
+
+if [[ $INSTALL_HOOKS = 0 && $INSTALL_TOOLS = 0 && $INSTALL_ALIASES = 0 ]]; then
+   echo "Nothing to do. Try $SCRIPT_NAME -h for a list of commands."
+   exit 0
+fi
+
+if [[ $INSTALL_TOOLS = 1 || $INSTALL_ALIASES = 1 ]]; then
+    if [[ -z "$TOR_DEVTOOLS_DIR" ]] ; then
+        fail "\$TOR_DEVTOOLS_DIR was not set."
+    fi
+    note "Checking whether \$TOR_DEVTOOLS_DIR ($TOR_DEVTOOLS_DIR) is a git repo..."
+    GITDIR=$(cd "$TOR_DEVTOOLS_DIR" && git rev-parse --git-dir 2>/dev/null)
+    note "GITDIR is $GITDIR"
+    if [[ -n "$GITDIR" ]] ; then
+        cat <<EOF
+You have asked me to install to \$TOR_DEVTOOLS_DIR ($TOR_DEVTOOLS_DIR).
+That is inside a git repository, so you might not want to install there:
+depending on what you pull or push, you might find yourself giving somebody
+else write access to your scripts.  I think you should just use ~/bin or
+something.
+EOF
+
+        echo
+        if [[ "$FORCE" = 1 ]] ; then
+            echo "I will install anyway, since you said '-f'."
+        else
+            echo "I will not install. You can tell me -f if you are really sure."
+            exit 1
+        fi
+    else
+        note "It was not."
+    fi
+fi
+
+if [[ ! -d "$SCRIPTS_DIR" || ! -e "$SCRIPTS_DIR/git-push-all.sh" ]]; then
+    fail "Couldn't find scripts in '$SCRIPTS_DIR'"
+fi
+
+if [[ $DRY_RUN = 1 ]]; then
+    echo "** DRY RUN **"
+    RUN="echo >>"
+else
+    RUN=
+fi
+
+set -e
+
+# ======================================================================
+if [[ $INSTALL_HOOKS = 1 ]]; then
+       HOOKS_DIR=$(git rev-parse --git-path hooks)
+
+       note "Looking for hooks directory"
+
+       if [[ -z "$HOOKS_DIR" || ! -d "$HOOKS_DIR" ]]; then
+           fail "Couldn't find git hooks directory."
+       fi
+
+       note "Found hooks directory in $HOOKS_DIR"
+
+       note "Installing hooks"
+       for fn in "$SCRIPTS_DIR"/*.git-hook; do
+           name=$(basename "$fn")
+           $RUN install --backup "$fn" "${HOOKS_DIR}/${name%.git-hook}"
+       done
+fi
+
+
+# ======================================================================
+if [[ $INSTALL_TOOLS = 1 ]]; then
+    note "Installing tools."
+    note "Looking for \$TOR_DEVTOOLS_DIR ($TOR_DEVTOOLS_DIR)"
+
+    if [[ ! -d "$TOR_DEVTOOLS_DIR" ]]; then
+        note "Creating directory"
+        $RUN mkdir -p "$TOR_DEVTOOLS_DIR"
+    fi
+
+    note "Copying scripts"
+    for tool in "${TOOL_NAMES[@]}"; do
+        $RUN install --backup "${SCRIPTS_DIR}/git-${tool}.sh" "${TOR_DEVTOOLS_DIR}/"
+    done
+fi
+
+# ======================================================================
+if [[ $INSTALL_ALIASES = 1 ]]; then
+    note "Installing aliases."
+    note "Looking for \$TOR_DEVTOOLS_DIR ($TOR_DEVTOOLS_DIR)"
+
+    note "Checking for ${TOR_DEVTOOLS_DIR}/git-push-all.sh"
+    if [[ ! -x "${TOR_DEVTOOLS_DIR}/git-push-all.sh" ]]; then
+        if [[ $DRY_RUN = 0 ]]; then
+            fail "Could not find scripts in \$TOR_DEVTOOLS_DIR"
+        fi
+    fi
+
+    note "Setting aliases"
+    for tool in "${TOOL_NAMES[@]}"; do
+        $RUN git config --global "alias.$tool" \!"${TOR_DEVTOOLS_DIR}/git-${tool}.sh"
+    done
+
+fi
+
+note Done.



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