[tor-commits] [tor/master] shellcheck: Add shellcheck to the pre-commit hook

[nickm@xxxxxxxxxxxxxx]

commit 5c2941e69f3e444664d6426f42cb52cb885800ee
Author: teor <teor@xxxxxxxxxxxxxx>
Date:   Fri Aug 30 22:54:05 2019 +1000

    shellcheck: Add shellcheck to the pre-commit hook
    
    * Move the shellcheck script from the Makefile to its own script file
    * Reformat the shellcheck script so it's easier to read and modify
    * Call the shellcheck script from the pre-commit hook
    
    Fixes bug 30967; not in any released version of Tor.
---
 Makefile.am                        | 18 +----------
 scripts/git/pre-commit.git-hook    |  4 +++
 scripts/maint/checkShellScripts.sh | 64 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 69 insertions(+), 17 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 25c6562c1..4022995fb 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -239,23 +239,7 @@ test: all
 	$(top_builddir)/src/test/test
 
 shellcheck:
-	# Only use shellcheck if shellcheck is installed
-	# Check the directories that contain scripts that we can fix
-	if command -v shellcheck; then \
-                find "$(top_srcdir)" -name "*.sh" -path "$(top_srcdir)/contrib/*" -path "$(top_srcdir)/doc/*" -path "$(top_srcdir)/scripts/*" -path "$(top_srcdir)/src/*" -not -path "$(top_srcdir)/src/ext/*" -not -path "$(top_srcdir)/src/rust/registry/*" -exec shellcheck {} +; \
-	        if [ -d "$(top_srcdir)/scripts/test" ]; then \
-                        shellcheck $(top_srcdir)/scripts/test/cov-diff $(top_srcdir)/scripts/test/coverage; \
-                fi; \
-                if [ -e "$(top_srcdir)/contrib/dirauth-tools/nagios-check-tor-authority-cert" ]; then \
-                        shellcheck "$(top_srcdir)/contrib/dirauth-tools/nagios-check-tor-authority-cert"; \
-                fi; \
-                if [ -e "$(top_srcdir)/contrib/client-tools/torify" ]; then \
-                        shellcheck "$(top_srcdir)/contrib/client-tools/torify"; \
-                fi; \
-                if [ -d "$(top_srcdir)/scripts/git" ]; then \
-                        shellcheck $(top_srcdir)/scripts/git/*.git-hook; \
-                fi; \
-	fi
+	$(top_srcdir)/scripts/maint/checkShellScripts.sh
 
 check-local: check-spaces check-changes check-includes check-best-practices shellcheck
 
diff --git a/scripts/git/pre-commit.git-hook b/scripts/git/pre-commit.git-hook
index b2a1847a2..1c381ec60 100755
--- a/scripts/git/pre-commit.git-hook
+++ b/scripts/git/pre-commit.git-hook
@@ -53,3 +53,7 @@ if [ -e "${PT_DIR}/practracker.py" ]; then
         fi
     fi
 fi
+
+if [ -e scripts/maint/checkShellScripts.sh ]; then
+    scripts/maint/checkShellScripts.sh
+fi
diff --git a/scripts/maint/checkShellScripts.sh b/scripts/maint/checkShellScripts.sh
new file mode 100755
index 000000000..02d1275c4
--- /dev/null
+++ b/scripts/maint/checkShellScripts.sh
@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2019 The Tor Project, Inc.
+# See LICENSE for license information
+#
+# checkShellScripts.sh
+# --------------------
+# If shellcheck is installed, check all the shell scripts that we can fix.
+
+set -e
+
+# Only run this script if shellcheck is installed
+# command echoes the path to shellcheck, which is a useful diagnostic log
+if ! command -v shellcheck; then
+    printf "%s: Install shellcheck to check shell scripts.\\n" "$0"
+    exit 0
+fi
+
+# Some platforms don't have realpath
+if command -v realpath ; then
+    HERE=$(dirname "$(realpath "$0")")
+else
+    HERE=$(dirname "$0")
+    if [ ! -d "$HERE" ]; then
+        HERE=$(dirname "$PWD/$0")
+    fi
+fi
+TOPLEVEL=$(dirname "$(dirname "$HERE")")
+
+# Check we actually have a tor/src directory
+if [ ! -d "$TOPLEVEL/src" ]; then
+    printf "Error: Couldn't find src directory in expected location: %s\\n" \
+        "$TOPLEVEL/src"
+fi
+
+# Check *.sh scripts, but ignore the ones that we can't fix
+find "$TOPLEVEL" \
+    -name "*.sh" \
+    -path "$TOPLEVEL/contrib/*" \
+    -path "$TOPLEVEL/doc/*" \
+    -path "$TOPLEVEL/scripts/*" \
+    -path "$TOPLEVEL/src/*" \
+    -not -path "$TOPLEVEL/src/ext/*" \
+    -not -path "$TOPLEVEL/src/rust/registry/*" \
+    -exec shellcheck {} +
+
+# Check scripts that aren't named *.sh
+if [ -d "$TOPLEVEL/scripts/test" ]; then
+    shellcheck \
+        "$TOPLEVEL/scripts/test/cov-diff" \
+        "$TOPLEVEL/scripts/test/coverage"
+fi
+if [ -e \
+    "$TOPLEVEL/contrib/dirauth-tools/nagios-check-tor-authority-cert" \
+   ]; then
+    shellcheck \
+        "$TOPLEVEL/contrib/dirauth-tools/nagios-check-tor-authority-cert"
+fi
+if [ -e "$TOPLEVEL/contrib/client-tools/torify" ]; then
+    shellcheck "$TOPLEVEL/contrib/client-tools/torify"
+fi
+if [ -d "$TOPLEVEL/scripts/git" ]; then
+    shellcheck "$TOPLEVEL/scripts/git/"*.git-hook
+fi



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