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7212c9b545e3155c358c3fe44921535c9866174c
shell-scripting-templates/.hooks/pre-commit.sh
Nathaniel Landau 7212c9b545 use new script template
2021-10-27 11:16:49 -04:00

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#!/usr/bin/env bash
_mainScript_() {
GITROOT=$(git rev-parse --show-toplevel 2>/dev/null)
_setPATH_ "/usr/local/bin" "${HOME}/bin"
LOGFILE="${HOME}/logs/$(_fileName_ "${GITROOT}")-$(basename "$0").log"
_gitStopWords_() {
# DESC:
# Check if any specified stop words are in the commit diff. If found, the pre-commit hook will exit with a non-zero exit code.
# ARGS:
# $1 (Required): Path to file
# OUTS:
# 0: Success
# 1: Failure
# USAGE:
# _gitStopWords_ "/path/to/file.sh"
# NOTE:
# Requires a file located at `~/.git_stop_words` containing one stopword per line.
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _gitDiffTmp="${TMP_DIR}/diff.txt"
if [ -f "${STOP_WORD_FILE}" ]; then
if [[ $(basename "${STOP_WORD_FILE}") == "$(basename "${1}")" ]]; then
debug "$(basename "${1}"): Don't check stop words file for stop words."
return 0
fi
debug "$(basename "${1}"): Checking for stop words..."
# remove blank lines from stopwords file
cat "${STOP_WORD_FILE}" | sed '/^$/d' >"${TMP_DIR}/pattern_file.txt"
# Add diff to a temporary file
git diff --cached -- "${1}" | grep '^+' >"${_gitDiffTmp}"
if grep --file="${TMP_DIR}/pattern_file.txt" "${_gitDiffTmp}"; then
return 1
else
return 0
fi
else
notice "Could not find git stopwords file expected at '${STOP_WORD_FILE}'. Continuing..."
return 0
fi
}
_ignoreSymlinks_() {
# DESC:
# Ensures that no symlinks have been committed to the repository. If the symlink
# has not yet been staged, it will be added to the .gitignore file.
# ARGS:
# NONE
# OUTS:
# 0: Success
# 1: Failure
# USAGE:
# _ignoreSymlinks_
local _gitIgnore="${GITROOT}/.gitignore"
local _haveSymlink=false
local _f
debug "Checking for symlinks..."
# Work on files not yet staged
for _f in $(git status --porcelain | grep '^??' | sed 's/^?? //'); do
if [ -L "${_f}" ]; then
if ! grep "${_f}" "${_gitIgnore}"; then
if printf "\n%s" "${_f}" >>"${_gitIgnore}"; then
notice "Added unstaged symlink '${_f}' to .gitignore"
else
fatal "Could not add symlink '${_f}' to .gitignore"
fi
fi
_haveSymlink=true
fi
done
# Work on files that were mistakenly staged
for f in $(git status --porcelain | grep '^A' | sed 's/^A //'); do
if [ -L "${_f}" ]; then
if ! grep "${_f}" "${_gitIgnore}"; then
if printf "\n%s" "${_f}" >>"${_gitIgnore}"; then
notice "Added unstaged symlink '${_f}' to .gitignore"
else
fatal "Could not add symlink '${_f}' to .gitignore"
fi
fi
_haveSymlink=true
fi
done
if [[ ${_haveSymlink} == true ]]; then
return 1
else
return 0
fi
}
_lintYAML_() {
# DESC:
# Lint YAML files staged for commit.
# Requires either 'yaml-lint 'or 'yamllint' be installed.
# ARGS:
# $1 (Required): Path to file
# OUTS:
# 0: Success
# 1: Failure
# USAGE:
# _lintYAML_ "/path/to/file.yaml"
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _filename="$(_fileName_ "${1}")"
if command -v yaml-lint >/dev/null; then
debug "${_filename}: Linting YAML..."
if yaml-lint "${1}"; then
return 0
else
return 1
fi
elif command -v yamllint >/dev/null; then
debug "${_filename}: Linting YAML..."
if [ -f "$(git rev-parse --show-toplevel)/.yamllint.yml" ]; then
if yamllint -c "$(git rev-parse --show-toplevel)/.yamllint.yml" "${1}"; then
return 0
else
return 1
fi
else
if yamllint "${1}"; then
return 0
else
return 1
fi
fi
else
notice "No YAML linter found. Continuing..."
return 0
fi
}
_lintShellscripts_() {
# DESC:
# Lint shell scripts staged for commit.
# ARGS:
# $1 (Required): Path to file
# OUTS:
# 0: Success
# 1: Failure
# stdout:
# USAGE:
# _lintShellscripts_ "/path/to/file.sh"
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _filename="$(_fileName_ "${1}")"
if command -v shellcheck >/dev/null; then
debug "${_filename}: Linting shellscript..."
if shellcheck --exclude=2016,2059,2001,2002,2148,1090,2162,2005,2034,2154,2086,2155,2181,2164,2120,2119,1083,1117,2207,1091 "${1}"; then
return 0
else
return 1
fi
else
notice "Shellcheck not installed. Continuing..."
return 0
fi
}
_BATS_() {
# DESC:
# Runs BATS unit tests on bash scripts. Requires bats to be installed.
# ARGS:
# $1 (Required): Path to bats test file
# OUTS:
# 0: Success
# 1: Failure
# USAGE:
# _BATS_ "/path/to/file.sh"
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _filename="$(_fileName_ "${1}")"
debug "${_filename}: Runing bats tests..."
if bats -t $1; then
return 0
else
return 1
fi
}
_lintAnsible_() {
# DESC:
# Lint Ansible YMAL files staged for commit. Requires ansible-lint to be installed.
# ARGS:
# $1 (Required): Path to file
# OUTS:
# 0: Success
# 1: Failure
# USAGE:
# _lintAnsible_ "/path/to/file.yml"
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _filename="$(_fileName_ "${1}")"
if ! command -v ansible-lint &>/dev/null; then
notice "ansible-lint not intstalled. Continuing..."
return 0
fi
ANSIBLE_COMMAND="ansible-lint -vv --parseable-severity ${1}"
if [ -f "$(git rev-parse --show-toplevel)/.ansible-lint.yml" ]; then
ANSIBLE_COMMAND="ansible-lint -p -c $(git rev-parse --show-toplevel)/.ansible-lint.yml ${1}"
fi
debug "${_filename}: Linting ansible..."
if ${ANSIBLE_COMMAND}; then
return 0
else
return 1
fi
}
# RUN SCRIPT LOGIC
# Attempt to discern if we are working on a repo that contains ansible files
IS_ANSIBLE_REPO=false
if find "$(git rev-parse --show-toplevel)" -mindepth 1 -maxdepth 1 -type f \
-name "inventory.yml" \
-o -name "ansible.cfg" \
-o -name ".ansible-lint.yml" &>/dev/null; then
IS_ANSIBLE_REPO=true
fi
if ! _ignoreSymlinks_; then
notice "Found symlink in repository. Exiting..."
_safeExit_ 1
fi
while read -r STAGED_FILE; do
debug "$(_fileName_ "${STAGED_FILE}"): Linting..."
if [ -f "${STAGED_FILE}" ]; then
if _gitStopWords_ "${STAGED_FILE}"; then
info "$(_fileName_ "${STAGED_FILE}"): Passed stopwords lint"
else
notice "$(_fileName_ "${STAGED_FILE}"): Failed stopwords lint"
_safeExit_ 1
fi
# YAML Linting
if [[ ${STAGED_FILE} =~ \.(yaml|yml)$ ]]; then
if _lintYAML_ "${STAGED_FILE}"; then
info "$(_fileName_ "${STAGED_FILE}"): Passed yaml lint"
else
notice "$(_fileName_ "${STAGED_FILE}"): Failed yaml lint"
_safeExit_ 1
fi
fi
# Ansible Linting
# - Only run in Ansible repos
# - Only run on YAML files
# - Don't lint files that are not Ansible playbooks
# - Don't lint in directory names that are not likely to contain Ansible playbooks
if [[ ${IS_ANSIBLE_REPO} == true ]] \
&& [[ ${STAGED_FILE} =~ \.(yaml|yml)$ ]] \
&& [[ ! $(_fileName_ "${STAGED_FILE}") =~ (^\.|^requirements|j2|vault\.yml|variables|meta|defaults?|inventory) ]] \
&& [[ ! $(_filePath_ "${STAGED_FILE}") =~ /(handlers|vars/|defaults/|meta/|molecule/|templates/|files/)/ ]]; then
if _lintAnsible_ "${STAGED_FILE}"; then
info "$(_fileName_ "${STAGED_FILE}"): Passed ansible-lint"
else
notice "$(_fileName_ "${STAGED_FILE}"): Failed ansible-lint"
_safeExit_ 1
fi
fi
# Shellscript Linting
if [[ ${STAGED_FILE} =~ \.(bash|sh)$ || "$(head -n 1 "${STAGED_FILE}")" =~ ^#!.*bash$ ]]; then
if _lintShellscripts_ "${STAGED_FILE}"; then
info "$(_fileName_ "${STAGED_FILE}"): Passed shellcheck"
else
notice "$(_fileName_ "${STAGED_FILE}"): Failed shellcheck"
_safeExit_ 1
fi
fi
# Run BATS unit tests on individual files if STAGED_FILE.bats exists in test/ directory
if [[ ${STAGED_FILE} =~ \.(sh|bash|bats|zsh)$ || "$(head -n 1 "${STAGED_FILE}")" =~ ^#!.*bash$ ]]; then
if [ -f "${GITROOT}/test/$(_fileBasename_ "${STAGED_FILE}").bats" ]; then
if _BATS_ "${GITROOT}/test/$(_fileBasename_ "${STAGED_FILE}").bats"; then
info "$(_fileName_ "${STAGED_FILE}"): BATS passed"
else
notice "$(_fileName_ "${STAGED_FILE}"): BATS failed"
_safeExit_ 1
fi
fi
fi
fi
done < <(git diff --cached --name-only --line-prefix="$(git rev-parse --show-toplevel)/")
}
# end _mainScript_
# ################################## Flags and defaults
# Script specific
STOP_WORD_FILE="${HOME}/.git_stop_words"
shopt -s nocasematch # Case insensitive matching
# Required variables
LOGFILE="${HOME}/logs/$(basename "$0").log"
QUIET=false
LOGLEVEL=ERROR
VERBOSE=false
FORCE=false
DRYRUN=false
declare -a ARGS=()
# ################################## Custom utility functions (Pasted from repository)
_fileName_() {
# DESC:
# Get only the filename from a string
# ARGS:
# $1 (Required) - Input string
# OUTS:
# 0 - Success
# 1 - Failure
# stdout: Filename with extension
# USAGE:
# _fileName_ "some/path/to/file.txt" --> "file.txt"
# _fileName_ "some/path/to/file" --> "file"
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
printf "%s\n" "${1##*/}"
}
_filePath_() {
# DESC:
# Finds the directory name from a file path. If it exists on filesystem, print
# absolute path. If a string, remove the filename and return the path
# ARGS:
# $1 (Required) - Input string path
# OUTS:
# 0 - Success
# 1 - Failure
# stdout: Directory path
# USAGE:
# _fileDir_ "some/path/to/file.txt" --> "some/path/to"
# CREDIT:
# https://github.com/labbots/bash-utility/
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _tmp=${1}
if [ -e "${_tmp}" ]; then
_tmp="$(dirname "$(realpath "${_tmp}")")"
else
[[ ${_tmp} != *[!/]* ]] && { printf '/\n' && return; }
_tmp="${_tmp%%"${_tmp##*[!/]}"}"
[[ ${_tmp} != */* ]] && { printf '.\n' && return; }
_tmp=${_tmp%/*} && _tmp="${_tmp%%"${_tmp##*[!/]}"}"
fi
printf '%s' "${_tmp:-/}"
}
_fileBasename_() {
# DESC:
# Gets the basename of a file from a file name
# ARGS:
# $1 (Required) - Input string path
# OUTS:
# 0 - Success
# 1 - Failure
# stdout: Filename basename (no extension or path)
# USAGE:
# _fileBasename_ "some/path/to/file.txt" --> "file"
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _file
local _basename
_file="${1##*/}"
_basename="${_file%.*}"
printf "%s" "${_basename}"
}
# ################################## Functions required for this template to work
_setColors_() {
# DESC:
# Sets colors use for alerts.
# ARGS:
# None
# OUTS:
# None
# USAGE:
# echo "${blue}Some text${reset}"
if tput setaf 1 >/dev/null 2>&1; then
bold=$(tput bold)
underline=$(tput smul)
reverse=$(tput rev)
reset=$(tput sgr0)
if [[ $(tput colors) -ge 256 ]] >/dev/null 2>&1; then
white=$(tput setaf 231)
blue=$(tput setaf 38)
yellow=$(tput setaf 11)
tan=$(tput setaf 3)
green=$(tput setaf 82)
red=$(tput setaf 1)
purple=$(tput setaf 171)
gray=$(tput setaf 250)
else
white=$(tput setaf 7)
blue=$(tput setaf 38)
yellow=$(tput setaf 3)
tan=$(tput setaf 3)
green=$(tput setaf 2)
red=$(tput setaf 1)
purple=$(tput setaf 13)
gray=$(tput setaf 7)
fi
else
bold="\033[4;37m"
reset="\033[0m"
underline="\033[4;37m"
reverse=""
white="\033[0;37m"
blue="\033[0;34m"
yellow="\033[0;33m"
tan="\033[0;33m"
green="\033[1;32m"
red="\033[0;31m"
purple="\033[0;35m"
gray="\033[0;37m"
fi
}
_alert_() {
# DESC:
# Controls all printing of messages to log files and stdout.
# ARGS:
# $1 (required) - The type of alert to print
# (success, header, notice, dryrun, debug, warning, error,
# fatal, info, input)
# $2 (required) - The message to be printed to stdout and/or a log file
# $3 (optional) - Pass '${LINENO}' to print the line number where the _alert_ was triggered
# OUTS:
# stdout: The message is printed to stdout
# log file: The message is printed to a log file
# USAGE:
# [_alertType] "[MESSAGE]" "${LINENO}"
# NOTES:
# - The colors of each alert type are set in this function
# - For specified alert types, the funcstac will be printed
local _color
local _alertType="${1}"
local _message="${2}"
local _line="${3:-}" # Optional line number
[[ $# -lt 2 ]] && fatal 'Missing required argument to _alert_'
if [[ -n ${_line} && ${_alertType} =~ ^(fatal|error) && ${FUNCNAME[2]} != "_trapCleanup_" ]]; then
_message="${_message} ${gray}(line: ${_line}) $(_printFuncStack_)"
elif [[ -n ${_line} && ${FUNCNAME[2]} != "_trapCleanup_" ]]; then
_message="${_message} ${gray}(line: ${_line})"
elif [[ -z ${_line} && ${_alertType} =~ ^(fatal|error) && ${FUNCNAME[2]} != "_trapCleanup_" ]]; then
_message="${_message} ${gray}$(_printFuncStack_)"
fi
if [[ ${_alertType} =~ ^(error|fatal) ]]; then
_color="${bold}${red}"
elif [ "${_alertType}" == "info" ]; then
_color="${gray}"
elif [ "${_alertType}" == "warning" ]; then
_color="${red}"
elif [ "${_alertType}" == "success" ]; then
_color="${green}"
elif [ "${_alertType}" == "debug" ]; then
_color="${purple}"
elif [ "${_alertType}" == "header" ]; then
_color="${bold}${white}${underline}"
elif [ ${_alertType} == "notice" ]; then
_color="${bold}"
elif [ ${_alertType} == "input" ]; then
_color="${bold}${underline}"
elif [ "${_alertType}" = "dryrun" ]; then
_color="${blue}"
else
_color=""
fi
_writeToScreen_() {
("${QUIET}") && return 0 # Print to console when script is not 'quiet'
[[ ${VERBOSE} == false && ${_alertType} =~ ^(debug|verbose) ]] && return 0
if ! [[ -t 1 || -z ${TERM:-} ]]; then # Don't use colors on non-recognized terminals
_color=""
reset=""
fi
if [[ ${_alertType} == header ]]; then
printf "${_color}%s${reset}\n" "${_message}"
else
printf "${_color}[%7s] %s${reset}\n" "${_alertType}" "${_message}"
fi
}
_writeToScreen_
_writeToLog_() {
[[ ${_alertType} == "input" ]] && return 0
[[ ${LOGLEVEL} =~ (off|OFF|Off) ]] && return 0
if [ -z "${LOGFILE:-}" ]; then
LOGFILE="$(pwd)/$(basename "$0").log"
fi
[ ! -d "$(dirname "${LOGFILE}")" ] && mkdir -p "$(dirname "${LOGFILE}")"
[[ ! -f ${LOGFILE} ]] && touch "${LOGFILE}"
# Don't use colors in logs
local cleanmessage="$(echo "${_message}" | sed -E 's/(\x1b)?\[(([0-9]{1,2})(;[0-9]{1,3}){0,2})?[mGK]//g')"
# Print message to log file
printf "%s [%7s] %s %s\n" "$(date +"%b %d %R:%S")" "${_alertType}" "[$(/bin/hostname)]" "${cleanmessage}" >>"${LOGFILE}"
}
# Write specified log level data to logfile
case "${LOGLEVEL:-ERROR}" in
ALL | all | All)
_writeToLog_
;;
DEBUG | debug | Debug)
_writeToLog_
;;
INFO | info | Info)
if [[ ${_alertType} =~ ^(error|fatal|warning|info|notice|success) ]]; then
_writeToLog_
fi
;;
NOTICE | notice | Notice)
if [[ ${_alertType} =~ ^(error|fatal|warning|notice|success) ]]; then
_writeToLog_
fi
;;
WARN | warn | Warn)
if [[ ${_alertType} =~ ^(error|fatal|warning) ]]; then
_writeToLog_
fi
;;
ERROR | error | Error)
if [[ ${_alertType} =~ ^(error|fatal) ]]; then
_writeToLog_
fi
;;
FATAL | fatal | Fatal)
if [[ ${_alertType} =~ ^fatal ]]; then
_writeToLog_
fi
;;
OFF | off)
return 0
;;
*)
if [[ ${_alertType} =~ ^(error|fatal) ]]; then
_writeToLog_
fi
;;
esac
} # /_alert_
error() { _alert_ error "${1}" "${2:-}"; }
warning() { _alert_ warning "${1}" "${2:-}"; }
notice() { _alert_ notice "${1}" "${2:-}"; }
info() { _alert_ info "${1}" "${2:-}"; }
success() { _alert_ success "${1}" "${2:-}"; }
dryrun() { _alert_ dryrun "${1}" "${2:-}"; }
input() { _alert_ input "${1}" "${2:-}"; }
header() { _alert_ header "${1}" "${2:-}"; }
debug() { _alert_ debug "${1}" "${2:-}"; }
fatal() {
_alert_ fatal "${1}" "${2:-}"
_safeExit_ "1"
}
_printFuncStack_() {
# DESC:
# Prints the function stack in use. Used for debugging, and error reporting.
# ARGS:
# None
# OUTS:
# stdout: Prints [function]:[file]:[line]
# NOTE:
# Does not print functions from the alert class
local _i
_funcStackResponse=()
for ((_i = 1; _i < ${#BASH_SOURCE[@]}; _i++)); do
case "${FUNCNAME[$_i]}" in "_alert_" | "_trapCleanup_" | fatal | error | warning | notice | info | debug | dryrun | header | success) continue ;; esac
_funcStackResponse+=("${FUNCNAME[$_i]}:$(basename ${BASH_SOURCE[$_i]}):${BASH_LINENO[_i - 1]}")
done
printf "( "
printf %s "${_funcStackResponse[0]}"
printf ' < %s' "${_funcStackResponse[@]:1}"
printf ' )\n'
}
_safeExit_() {
# DESC:
# Cleanup and exit from a script
# ARGS:
# $1 (optional) - Exit code (defaults to 0)
# OUTS:
# None
if [[ -d ${SCRIPT_LOCK:-} ]]; then
if command rm -rf "${SCRIPT_LOCK}"; then
debug "Removing script lock"
else
warning "Script lock could not be removed. Try manually deleting ${tan}'${LOCK_DIR}'"
fi
fi
if [[ -n ${TMP_DIR:-} && -d ${TMP_DIR:-} ]]; then
if [[ ${1:-} == 1 && -n "$(ls "${TMP_DIR}")" ]]; then
command rm -r "${TMP_DIR}"
else
command rm -r "${TMP_DIR}"
debug "Removing temp directory"
fi
fi
trap - INT TERM EXIT
exit ${1:-0}
}
_trapCleanup_() {
# DESC:
# Log errors and cleanup from script when an error is trapped. Called by 'trap'
# ARGS:
# $1: Line number where error was trapped
# $2: Line number in function
# $3: Command executing at the time of the trap
# $4: Names of all shell functions currently in the execution call stack
# $5: Scriptname
# $6: $BASH_SOURCE
# USAGE:
# trap '_trapCleanup_ ${LINENO} ${BASH_LINENO} "${BASH_COMMAND}" "${FUNCNAME[*]}" "${0}" "${BASH_SOURCE[0]}"' EXIT INT TERM SIGINT SIGQUIT SIGTERM
# OUTS:
# Exits script with error code 1
local _line=${1:-} # LINENO
local _linecallfunc=${2:-}
local _command="${3:-}"
local _funcstack="${4:-}"
local _script="${5:-}"
local _sourced="${6:-}"
if [[ "$(declare -f "fatal")" && "$(declare -f "_printFuncStack_")" ]]; then
_funcstack="'$(echo "${_funcstack}" | sed -E 's/ / < /g')'"
if [[ ${_script##*/} == "${_sourced##*/}" ]]; then
fatal "${7:-} command: '${_command}' (line: ${_line}) [func: $(_printFuncStack_)]"
else
fatal "${7:-} command: '${_command}' (func: ${_funcstack} called at line ${_linecallfunc} of '${_script##*/}') (line: ${_line} of '${_sourced##*/}') "
fi
else
printf "%s\n" "Fatal error trapped. Exiting..."
fi
if [ "$(declare -f "_safeExit_")" ]; then
_safeExit_ 1
else
exit 1
fi
}
_makeTempDir_() {
# DESC:
# Creates a temp directory to house temporary files
# ARGS:
# $1 (Optional) - First characters/word of directory name
# OUTS:
# Sets $TMP_DIR variable to the path of the temp directory
# USAGE:
# _makeTempDir_ "$(basename "$0")"
[ -d "${TMP_DIR:-}" ] && return 0
if [ -n "${1:-}" ]; then
TMP_DIR="${TMPDIR:-/tmp/}${1}.${RANDOM}.${RANDOM}.$$"
else
TMP_DIR="${TMPDIR:-/tmp/}$(basename "$0").${RANDOM}.${RANDOM}.${RANDOM}.$$"
fi
(umask 077 && mkdir "${TMP_DIR}") || {
fatal "Could not create temporary directory! Exiting."
}
debug "\$TMP_DIR=${TMP_DIR}"
}
_acquireScriptLock_() {
# DESC:
# Acquire script lock to prevent running the same script a second time before the
# first instance exits
# ARGS:
# $1 (optional) - Scope of script execution lock (system or user)
# OUTS:
# exports $SCRIPT_LOCK - Path to the directory indicating we have the script lock
# Exits script if lock cannot be acquired
# NOTE:
# If the lock was acquired it's automatically released in _safeExit_()
local _lockDir
if [[ ${1:-} == 'system' ]]; then
_lockDir="${TMPDIR:-/tmp/}$(basename "$0").lock"
else
_lockDir="${TMPDIR:-/tmp/}$(basename "$0").$UID.lock"
fi
if command mkdir "${LOCK_DIR}" 2>/dev/null; then
readonly SCRIPT_LOCK="${_lockDir}"
debug "Acquired script lock: ${yellow}${SCRIPT_LOCK}${purple}"
else
if [ "$(declare -f "_safeExit_")" ]; then
error "Unable to acquire script lock: ${tan}${LOCK_DIR}${red}"
fatal "If you trust the script isn't running, delete the lock dir"
else
printf "%s\n" "ERROR: Could not acquire script lock. If you trust the script isn't running, delete: ${LOCK_DIR}"
exit 1
fi
fi
}
_setPATH_() {
# DESC:
# Add directories to $PATH so script can find executables
# ARGS:
# $@ - One or more paths
# OUTS: Adds items to $PATH
# USAGE:
# _setPATH_ "/usr/local/bin" "${HOME}/bin" "$(npm bin)"
[[ $# == 0 ]] && fatal "Missing required argument to ${FUNCNAME[0]}"
local _newPath
for _newPath in "$@"; do
if [ -d "${_newPath}" ]; then
if ! echo "${PATH}" | grep -Eq "(^|:)${_newPath}($|:)"; then
if PATH="${_newPath}:${PATH}"; then
debug "Added '${_newPath}' to PATH"
else
return 1
fi
else
debug "_setPATH_: '${_newPath}' already exists in PATH"
fi
else
debug "_setPATH_: can not find: ${_newPath}"
return 0
fi
done
return 0
}
_useGNUutils_() {
# DESC:
# Add GNU utilities to PATH to allow consistent use of sed/grep/tar/etc. on MacOS
# ARGS:
# None
# OUTS:
# 0 if successful
# 1 if unsuccessful
# PATH: Adds GNU utilities to the path
# USAGE:
# # if ! _useGNUUtils_; then exit 1; fi
# NOTES:
# GNU utilities can be added to MacOS using Homebrew
[ ! "$(declare -f "_setPATH_")" ] && fatal "${FUNCNAME[0]} needs function _setPATH_"
if _setPATH_ \
"/usr/local/opt/gnu-tar/libexec/gnubin" \
"/usr/local/opt/coreutils/libexec/gnubin" \
"/usr/local/opt/gnu-sed/libexec/gnubin" \
"/usr/local/opt/grep/libexec/gnubin"; then
return 0
else
return 1
fi
}
_parseOptions_() {
# DESC:
# Iterates through options passed to script and sets variables. Will break -ab into -a -b
# when needed and --foo=bar into --foo bar
# ARGS:
# $@ from command line
# OUTS:
# Sets array 'ARGS' containing all arguments passed to script that were not parsed as options
# USAGE:
# _parseOptions_ "$@"
# Iterate over options
local _optstring=h
declare -a _options
local _c
local i
while (($#)); do
case $1 in
# If option is of type -ab
-[!-]?*)
# Loop over each character starting with the second
for ((i = 1; i < ${#1}; i++)); do
_c=${1:i:1}
_options+=("-${_c}") # Add current char to options
# If option takes a required argument, and it's not the last char make
# the rest of the string its argument
if [[ ${_optstring} == *"${_c}:"* && ${1:i+1} ]]; then
_options+=("${1:i+1}")
break
fi
done
;;
# If option is of type --foo=bar
--?*=*) _options+=("${1%%=*}" "${1#*=}") ;;
# add --endopts for --
--) _options+=(--endopts) ;;
# Otherwise, nothing special
*) _options+=("$1") ;;
esac
shift
done
set -- "${_options[@]:-}"
unset _options
# Read the options and set stuff
while [[ ${1:-} == -?* ]]; do
case $1 in
# Custom options
# Common options
-h | --help)
_usage_
_safeExit_
;;
--loglevel)
shift
LOGLEVEL=${1}
;;
--logfile)
shift
LOGFILE="${1}"
;;
-n | --dryrun) DRYRUN=true ;;
-v | --verbose) VERBOSE=true ;;
-q | --quiet) QUIET=true ;;
--force) FORCE=true ;;
--endopts)
shift
break
;;
*)
if [ "$(declare -f "_safeExit_")" ]; then
fatal "invalid option: $1"
else
printf "%s\n" "Invalid option: $1"
exit 1
fi
;;
esac
shift
done
if [[ -z ${*} || ${*} == null ]]; then
ARGS=()
else
ARGS+=("$@") # Store the remaining user input as arguments.
fi
}
_usage_() {
cat <<USAGE_TEXT
${bold}$(basename "$0") [OPTION]...${reset}
This script runs a number of automated tests on files that are staged in Git prior to
allowing them to be committed
${bold}Options:${reset}
-h, --help Display this help and exit
--loglevel [LEVEL] One of: FATAL, ERROR, WARN, INFO, NOTICE, DEBUG, ALL, OFF
(Default is 'ERROR')
--logfile [FILE] Full PATH to logfile. (Default is '${HOME}/logs/$(basename "$0").log')
-n, --dryrun Non-destructive. Makes no permanent changes.
-q, --quiet Quiet (no output)
-v, --verbose Output more information. (Items echoed to 'verbose')
--force Skip all user interaction. Implied 'Yes' to all actions.
${bold}Example Usage:${reset}
${gray}# Run the script and specify log level and log file.${reset}
$(basename "$0") -vn --logfile "/path/to/file.log" --loglevel 'WARN'
USAGE_TEXT
}
# ################################## INITIALIZE AND RUN THE SCRIPT
# (Comment or uncomment the lines below to customize script behavior)
trap '_trapCleanup_ ${LINENO} ${BASH_LINENO} "${BASH_COMMAND}" "${FUNCNAME[*]}" "${0}" "${BASH_SOURCE[0]}"' EXIT INT TERM SIGINT SIGQUIT SIGTERM
# Trap errors in subshells and functions
set -o errtrace
# Exit on error. Append '||true' if you expect an error
set -o errexit
# Use last non-zero exit code in a pipeline
set -o pipefail
# Confirm we have BASH greater than v4
[ "${BASH_VERSINFO:-0}" -ge 4 ] || {
printf "%s\n" "ERROR: BASH_VERSINFO is '${BASH_VERSINFO:-0}'. This script requires BASH v4 or greater."
exit 1
}
# Make `for f in *.txt` work when `*.txt` matches zero files
shopt -s nullglob globstar
# Set IFS to preferred implementation
IFS=$' \n\t'
# Run in debug mode
# set -o xtrace
# Initialize color constants
_setColors_
# Disallow expansion of unset variables
set -o nounset
# Force arguments when invoking the script
# [[ $# -eq 0 ]] && _parseOptions_ "-h"
# Parse arguments passed to script
_parseOptions_ "$@"
# Create a temp directory '$TMP_DIR'
_makeTempDir_ "$(basename "$0")"
# Acquire script lock
# _acquireScriptLock_
# Source GNU utilities for use on MacOS
_useGNUutils_
# Run the main logic script
_mainScript_
# Exit cleanly
_safeExit_
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