ansi colors

bin/miaou-bash

@@ -7,38 +7,7 @@ if [[ ! -v MIAOU_BASH_LOADED_ONCE ]]; then
   readonly MIAOU_BASH_LOADED_ONCE=true
   readonly MIAOU_DEBUG=${MIAOU_DEBUG:-false}
   readonly MIAOU_ERROR_REGEX='^(.*): line ([0-9]+): miaou_error:'
-
-  declare -A ANSI
-  ANSI[RESET]=0
-
-  ANSI[STYLE_ITALIC]=3
-  ANSI[STYLE_BOLD]=1
-  ANSI[STYLE_UNDERLINE]=4
-  ANSI[STYLE_STRIKETHROUGH]=9
-
-  ANSI[FG_BLACK]=30
-  ANSI[FG_RED]=31
-  ANSI[FG_GREEN]=32
-  ANSI[FG_YELLOW]=33
-  ANSI[FG_BLUE]=34
-  ANSI[FG_PURPLE]=35
-  ANSI[FG_CYAN]=36
-  ANSI[FG_WHITE]=37
-  ANSI[FG_GRAY]=90
-  ANSI[FG_LIGHTBLUE]=94
-  ANSI[FG_MAGENTA]=95
-
-  ANSI[BG_BLACK]=40
-  ANSI[BG_RED]=41
-  ANSI[BG_GREEN]=42
-  ANSI[BG_YELLOW]=43
-  ANSI[BG_BLUE]=44
-  ANSI[BG_PURPLE]=45
-  ANSI[BG_CYAN]=46
-  ANSI[BG_WHITE]=47
-  ANSI[BG_GRAY]=90
-  ANSI[BG_MAGENTA]=95
-  readonly ANSI
+  source "$MIAOU_BASH_DIR"/lib/ansi.bash
 fi
 ## functions
 

bin/pkg_add

@@ -0,0 +1,82 @@
+#!/usr/bin/env miaou-bash
+
+# CONSTANTS
+
+REFRESH_SLOT='24 hours'
+DEBIAN_REPO_DIR='/var/lib/apt/lists/partial'
+ARCH_REPO_DIR='/var/lib/pacman/sync'
+
+# functions
+
+function usage {
+  echo "usage: $(basename "$0") <packages...>"
+  echo 'idempotent package installation : install only if not yet done + smart refresh repositories'
+}
+
+# $1 -> file to compare with REFRESH_SLOT
+function needs_refresh {
+  [[ $(date --date="-$REFRESH_SLOT" +%s) -gt $(date -d "$(stat -c %y "$1")" +%s) ]]
+}
+
+function debian_update_repo {
+  if needs_refresh "$DEBIAN_REPO_DIR"; then
+    echo "updating repositories..."
+    apt-get update
+  fi
+}
+
+function debian_add {
+  declare -a wanted=("$@")
+  declare -a missing=()
+  mapfile -t queries < <(dpkg-query -W -f='${Package}: ${Status}\n' "${wanted[@]}" 2>&1 || true)
+
+  local unrecognized_regex='^dpkg-query: no packages found matching (.*)$'
+  local missing_regex='(.*): .* not-installed$'
+  for query in "${queries[@]}"; do
+    if [[ "$query" =~ $unrecognized_regex ]]; then
+      missing+=("${BASH_REMATCH[1]}")
+    elif [[ "$query" =~ $missing_regex ]]; then
+      missing+=("${BASH_REMATCH[1]}")
+    fi
+  done
+
+  if [[ "${#missing[@]}" -gt 0 ]]; then
+    debian_update_repo
+    echo installing packages: "${missing[@]}"
+    apt-get install -y "${missing[@]}"
+  fi
+}
+
+function arch_update_repo {
+  if needs_refresh "$ARCH_REPO_DIR"; then
+    echo "updating repositories..."
+    pacman -Syyu --noconfirm
+  fi
+}
+
+function arch_add {
+  declare -a wanted=("$@")
+  declare -a missing=()
+  for i in "${wanted[@]}"; do
+    if ! pacman -Ql "$i" &>/dev/null; then
+      missing+=("$i")
+    fi
+  done
+  if [[ "${#missing[@]}" -gt 0 ]]; then
+    arch_update_repo
+    echo installing packages: "${missing[@]}"
+    pacman -S --noconfirm "${missing[@]}"
+  fi
+}
+
+# MAIN
+
+[ "$UID" -ne 0 ] && echo 'root privilege required' && builtin exit 1
+[[ $# -lt 1 ]] && usage && builtin exit 2
+
+source "$MIAOU_BASH_DIR"/lib/functions.bash
+DISTRO_LIKE=$(get_distro_like)
+case "$DISTRO_LIKE" in
+debian) debian_add "$@" ;;
+arch) arch_add "$@" ;;
+esac