feat(revive): Adds built-in support for repo-level revive.toml (#20)

Modifies revive hooks:

* Auto-adds '-config=revive.toml' argument if file is present in repository root
* Triggers hooks when repo-level revive.toml is modified
* Updates README

NOTE: Although the file-based go-revive hook is configured to trigger when revive.toml is modified, it will essentially do nothing if there are no .go files staged. We might consider adding some logic to run against ALL .go files in the repo, but I'm really not sure thats a good idea, and I probably didn't need to add a trigger to the file-level hook at all.

.pre-commit-hooks.yaml

@@ -358,11 +358,14 @@
 # go-revive
 #   * File-based
 #   * Executes if any .go files modified
+#   * Executes if revive.toml modified
+#   * Adds arg '-config=revive.toml' if present
+# NOTE: Does nothing if ONLY revive.toml is modified (ie no .go files modified)
 # ==============================================================================
 -   id: go-revive
     name: 'go-revive'
     entry: go-revive.sh
-    types: [go]
+    files: '(\.go$)|(\brevive\.toml$)'
     exclude: '(^|/)vendor/'
     language: 'script'
     description: "Run 'revive [$ARGS] $FILE' for each staged .go file"
@@ -375,11 +378,13 @@
 #   * Targets first parent folder with a go.mod file
 #   * Executes if any .go files modified
 #   * Executes if go.mod modified
+#   * Executes if revive.toml modified
+#   * Adds arg '-config=revive.toml' if present
 # ==============================================================================
 -   id: go-revive-mod
     name: 'go-revive-mod'
     entry: go-revive-mod.sh
-    files: '(\.go$)|(\bgo\.mod$)'
+    files: '(\.go$)|(\bgo\.mod$)|(\brevive\.toml$)'
     exclude: '(^|/)vendor/'
     language: 'script'
     description: "Run 'cd $(mod_root $FILE); revive [$ARGS] ./...' for each staged .go file"
@@ -393,11 +398,13 @@
 #   * Targets ALL folders with a go.mod file
 #   * Executes if any .go files modified
 #   * Executes if go.mod modified
+#   * Executes if revive.toml modified
+#   * Adds arg '-config=revive.toml' if present
 # ==============================================================================
 -   id: go-revive-repo-mod
     name: 'go-revive-repo-mod'
     entry: go-revive-repo-mod.sh
-    files: '(\.go$)|(\bgo\.mod$)'
+    files: '(\.go$)|(\bgo\.mod$)|(\brevive\.toml$)'
     exclude: '(^|/)vendor/'
     language: 'script'
     description: "Run 'cd $(mod_root); revive [$ARGS] ./...' for each module in the repo"

README.md

@@ -532,14 +532,27 @@ bingo install golang.org/x/lint/golint
 
 -------------
 ### go-revive
-~6x faster, stricter, configurable, extensible, and beautiful drop-in replacement for golint.
+\~6x faster, stricter, configurable, extensible, and beautiful drop-in replacement for golint.
 
 | Hook ID   | Description
 |-----------|------------
 | `go-revive`          | Run `'revive [$ARGS] $FILE'` for each staged .go file
 | `go-revive-mod`      | Run `'cd $(mod_root $FILE); revive [$ARGS] ./...'` for each staged .go file
 | `go-revive-repo-mod` | Run `'cd $(mod_root); revive [$ARGS] ./...'` for each module in the repo
 
+##### Support for Repository-Level Config
+As of time of writing, revive only auto-checks for configs in `${HOME}/revive.toml`, and doesn't check the local folder (ie. `${REPO_ROOT}/revive.toml`).
+
+To make revive more useful, these hooks add built-in support for a repository-level config file.
+
+###### Auto-Configured
+These hooks are configured to auto-add `-config=revive.toml` when the file is present in the repository root.
+
+###### Triggerred When Modified
+These hooks are configured to run when the repo-level `revive.toml` file is modified (and staged).
+
+**NOTE:** Although configured to run, the file-based `go-revive` hook will, by default, effectively _do nothing_ if there are no staged `.go` files to run against.
+
 ##### Install (via [bingo](https://github.com/TekWizely/bingo))
 ```
 bingo install github.com/mgechev/revive

go-revive-mod.sh

@@ -1,3 +1,6 @@
 #!/usr/bin/env bash
 cmd=(revive)
+if [ -f "revive.toml" ]; then
+	cmd+=( "-config=revive.toml" )
+fi
 . "$(dirname "${0}")/lib/cmd-mod.bash"

go-revive-repo-mod.sh

@@ -1,3 +1,6 @@
 #!/usr/bin/env bash
 cmd=(revive)
+if [ -f "revive.toml" ]; then
+	cmd+=( "-config=revive.toml" )
+fi
 . "$(dirname "${0}")/lib/cmd-repo-mod.bash"

go-revive.sh

@@ -1,3 +1,7 @@
 #!/usr/bin/env bash
 cmd=(revive)
+if [ -f "revive.toml" ]; then
+	cmd+=( "-config=revive.toml" )
+fi
+ignore_file_pattern_array=( "revive.toml" )
 . "$(dirname "${0}")/lib/cmd-files.bash"

lib/common.bash

@@ -2,6 +2,7 @@
 
 : "${use_dot_dot_dot:=1}"
 : "${error_on_output:=0}"
+: "${ignore_file_pattern_array:=}"
 
 ##
 # prepare_repo_hook_cmd
@@ -38,7 +39,7 @@ function verify_hook_cmd {
 # parse_file_hook_args
 # Creates global vars:
 #   OPTIONS: List of options to passed to comand
-#   FILES  : List of files to process
+#   FILES  : List of files to process, filtered against ignore_file_pattern_array
 #
 function parse_file_hook_args {
 	OPTIONS=()
@@ -72,14 +73,17 @@ function parse_file_hook_args {
 	#
 	all_files+=("$@")
 
-	# Filter out vendor entries
+	# Filter out vendor entries and ignore_file_pattern_array
 	#
 	FILES=()
-	local file
+	local file pattern
+	ignore_file_pattern_array+=( "vendor/*" "*/vendor/*" "*/vendor" )
 	for file in "${all_files[@]}"; do
-		if [[ "${file}" == "vendor/"* || "${file}" == *"/vendor/"* || "${file}" == *"/vendor" ]]; then
-			continue
-		fi
+		for pattern in "${ignore_file_pattern_array[@]}"; do
+			if [[ "${file}" == ${pattern} ]] ; then # pattern => unquoted
+				continue 2
+			fi
+		done
 		FILES+=("${file}")
 	done
 }