Add more custom validations

examples/validations/.gitignore

@@ -1 +1 @@
-calc
+validate

examples/validations/calc

@@ -0,0 +1,346 @@
+#!/usr/bin/env bash
+# This script was generated by bashly (https://github.com/DannyBen/bashly)
+# Modifying it manually is not recommended
+
+# :script.bash3_bouncer
+if [[ "${BASH_VERSINFO:-0}" -lt 4 ]]; then
+  printf "bash version 4 or higher is required\n"
+  exit 1
+fi
+
+# :command.version_command
+version_command() {
+  echo "$version"
+}
+
+# :command.usage
+calc_usage() {
+  if [[ -n $long_usage ]]; then
+    printf "calc - Sample application demonstrating validations\n"
+    echo
+
+  else
+    printf "calc - Sample application demonstrating validations\n"
+    echo
+
+  fi
+
+  printf "Usage:\n"
+  printf "  calc [command]\n"
+  printf "  calc [command] --help | -h\n"
+  printf "  calc --version | -v\n"
+  echo
+  # :command.usage_commands
+  printf "Commands:\n"
+  echo "  add   Add two numbers"
+  echo
+
+  if [[ -n $long_usage ]]; then
+    printf "Options:\n"
+    # :command.usage_fixed_flags
+    echo "  --help, -h"
+    printf "    Show this help\n"
+    echo
+    echo "  --version, -v"
+    printf "    Show version number\n"
+    echo
+
+  fi
+}
+
+# :command.usage
+calc_add_usage() {
+  if [[ -n $long_usage ]]; then
+    printf "calc add - Add two numbers\n"
+    echo
+
+  else
+    printf "calc add - Add two numbers\n"
+    echo
+
+  fi
+
+  printf "Shortcut: a\n"
+  echo
+
+  printf "Usage:\n"
+  printf "  calc add FIRST [SECOND] [options]\n"
+  printf "  calc add --help | -h\n"
+  echo
+
+  if [[ -n $long_usage ]]; then
+    printf "Options:\n"
+    # :command.usage_fixed_flags
+    echo "  --help, -h"
+    printf "    Show this help\n"
+    echo
+    # :command.usage_flags
+    # :flag.usage
+    echo "  --multiply, -m FACTOR"
+    printf "    Multiply the result\n"
+    echo
+    # :command.usage_args
+    printf "Arguments:\n"
+
+    # :argument.usage
+    echo "  FIRST"
+    printf "    First number\n"
+    echo
+
+    # :argument.usage
+    echo "  SECOND"
+    printf "    Second number\n"
+    echo
+
+  fi
+}
+
+# :command.normalize_input
+normalize_input() {
+  local arg flags
+
+  while [[ $# -gt 0 ]]; do
+    arg="$1"
+    if [[ $arg =~ ^(--[a-zA-Z0-9_\-]+)=(.+)$ ]]; then
+      input+=("${BASH_REMATCH[1]}")
+      input+=("${BASH_REMATCH[2]}")
+    elif [[ $arg =~ ^(-[a-zA-Z0-9])=(.+)$ ]]; then
+      input+=("${BASH_REMATCH[1]}")
+      input+=("${BASH_REMATCH[2]}")
+    elif [[ $arg =~ ^-([a-zA-Z0-9][a-zA-Z0-9]+)$ ]]; then
+      flags="${BASH_REMATCH[1]}"
+      for (( i=0 ; i < ${#flags} ; i++ )); do
+        input+=("-${flags:i:1}")
+      done
+    else
+      input+=("$arg")
+    fi
+
+    shift
+  done
+}
+# :command.inspect_args
+inspect_args() {
+  readarray -t sorted_keys < <(printf '%s\n' "${!args[@]}" | sort)
+  if (( ${#args[@]} )); then
+    echo args:
+    for k in "${sorted_keys[@]}"; do echo "- \${args[$k]} = ${args[$k]}"; done
+  else
+    echo args: none
+  fi
+
+  if (( ${#other_args[@]} )); then
+    echo
+    echo other_args:
+    echo "- \${other_args[*]} = ${other_args[*]}"
+    for i in "${!other_args[@]}"; do
+      echo "- \${other_args[$i]} = ${other_args[$i]}"
+    done
+  fi
+}
+
+# :command.user_lib
+# :src/lib/validations/validate_integer.sh
+validate_integer() {
+  [[ "$1" =~ ^[0-9]+$ ]] || echo "must be an integer"
+}
+
+# :command.command_functions
+# :command.function
+calc_add_command() {
+  # :src/add_command.sh
+  echo "# this file is located in 'src/add_command.sh'"
+  echo "# code for 'calc add' goes here"
+  echo "# you can edit it freely and regenerate (it will not be overwritten)"
+  inspect_args
+}
+
+# :command.parse_requirements
+parse_requirements() {
+  # :command.fixed_flag_filter
+  case "$1" in
+  --version | -v )
+    version_command
+    exit
+    ;;
+
+  --help | -h )
+    long_usage=yes
+    calc_usage
+    exit
+    ;;
+
+  esac
+  # :command.environment_variables_filter
+  # :command.dependencies_filter
+  # :command.command_filter
+  action=$1
+
+  case $action in
+  -* )
+    ;;
+
+  add | a )
+    action="add"
+    shift
+    calc_add_parse_requirements "$@"
+    shift $#
+    ;;
+
+  # :command.command_fallback
+  * )
+    calc_usage
+    exit 1
+    ;;
+
+  esac
+  # :command.required_args_filter
+  # :command.required_flags_filter
+  # :command.parse_requirements_while
+  while [[ $# -gt 0 ]]; do
+    key="$1"
+    case "$key" in
+
+    -* )
+      printf "invalid option: %s\n" "$key"
+      exit 1
+      ;;
+
+    * )
+      # :command.parse_requirements_case
+      printf "invalid argument: %s\n" "$key"
+      exit 1
+      ;;
+
+    esac
+  done
+  # :command.catch_all_filter
+  # :command.default_assignments
+  # :command.whitelist_filter
+}
+
+# :command.parse_requirements
+calc_add_parse_requirements() {
+  # :command.fixed_flag_filter
+  case "$1" in
+  --version | -v )
+    version_command
+    exit
+    ;;
+
+  --help | -h )
+    long_usage=yes
+    calc_add_usage
+    exit
+    ;;
+
+  esac
+  # :command.environment_variables_filter
+  # :command.dependencies_filter
+  # :command.command_filter
+  action="add"
+  # :command.required_args_filter
+  if [[ $1 && $1 != -* ]]; then
+    if [[ -n $(validate_integer "$1") ]]; then
+      printf "validation error: %s\n" "FIRST $(validate_integer "$1")"
+      exit 1
+    fi
+    args[first]=$1
+    shift
+  else
+    printf "missing required argument: FIRST\nusage: calc add FIRST [SECOND] [options]\n"
+    exit 1
+  fi
+  # :command.required_flags_filter
+  # :command.parse_requirements_while
+  while [[ $# -gt 0 ]]; do
+    key="$1"
+    case "$key" in
+    # :flag.case
+    --multiply | -m )
+      if [[ $2 ]]; then
+        if [[ -n $(validate_integer "$2") ]]; then
+          printf "validation error: %s\n" "--multiply, -m FACTOR $(validate_integer "$2")"
+          exit 1
+        fi
+        args[--multiply]="$2"
+        shift
+        shift
+      else
+        printf "%s\n" "--multiply requires an argument: --multiply, -m FACTOR"
+        exit 1
+      fi
+      ;;
+
+    -* )
+      printf "invalid option: %s\n" "$key"
+      exit 1
+      ;;
+
+    * )
+      # :command.parse_requirements_case
+      if [[ ! ${args[first]} ]]; then
+        if [[ -n $(validate_integer "$1") ]]; then
+          printf "validation error: %s\n" "FIRST $(validate_integer "$1")"
+          exit 1
+        fi
+        args[first]=$1
+        shift
+      elif [[ ! ${args[second]} ]]; then
+        if [[ -n $(validate_integer "$1") ]]; then
+          printf "validation error: %s\n" "SECOND $(validate_integer "$1")"
+          exit 1
+        fi
+        args[second]=$1
+        shift
+      else
+        printf "invalid argument: %s\n" "$key"
+        exit 1
+      fi
+      ;;
+
+    esac
+  done
+  # :command.catch_all_filter
+  # :command.default_assignments
+  # :command.whitelist_filter
+}
+
+# :command.initialize
+initialize() {
+  version="0.1.0"
+  long_usage=''
+  set -e
+
+  # :src/initialize.sh
+  # Code here runs inside the initialize() function
+  # Use it for anything that you need to run before any other function, like
+  # setting environment vairables:
+  # CONFIG_FILE=settings.ini
+  #
+  # Feel free to empty (but not delete) this file.
+}
+
+# :command.run
+run() {
+  declare -A args
+  declare -a other_args
+  declare -a input
+  normalize_input "$@"
+  parse_requirements "${input[@]}"
+
+  if [[ $action == "add" ]]; then
+    if [[ ${args[--help]} ]]; then
+      long_usage=yes
+      calc_add_usage
+    else
+      calc_add_command
+    fi
+
+  elif [[ $action == "root" ]]; then
+    root_command
+  fi
+}
+
+initialize
+run "$@"