chg: dev: include color library and common element !minor

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

bin/compose

@@ -10,18 +10,166 @@
 ##
 
 
-get_os() {
-    local uname_output machine
+ANSI_ESC=$'\e['
+
+ansi_color() {
+    local choice="$1"
+
+    if [ "$choice" == "tty" ]; then
+        if [ -t 1 ]; then
+            choice="yes"
+        else
+            choice="no"
+        fi
+    fi
+
+    if [ "$choice" != "no" ]; then
+
+        SET_COL_CHAR="${ANSI_ESC}${COL_CHAR}G"
+        SET_COL_STATUS="${ANSI_ESC}${COL_STATUS}G"
+        SET_COL_INFO="${ANSI_ESC}${COL_INFO}G"
+        SET_COL_ELT="${ANSI_ESC}${COL_ELT}G"
+
+        SET_BEGINCOL="${ANSI_ESC}0G"
+
+        UP="${ANSI_ESC}1A"
+        DOWN="${ANSI_ESC}1B"
+        LEFT="${ANSI_ESC}1D"
+        RIGHT="${ANSI_ESC}1C"
+
+        SAVE="${ANSI_ESC}7"
+        RESTORE="${ANSI_ESC}8"
+
+        NORMAL="${ANSI_ESC}0m"
+
+        GRAY="${ANSI_ESC}1;30m"
+        RED="${ANSI_ESC}1;31m"
+        GREEN="${ANSI_ESC}1;32m"
+        YELLOW="${ANSI_ESC}1;33m"
+        BLUE="${ANSI_ESC}1;34m"
+        PINK="${ANSI_ESC}1;35m"
+        CYAN="${ANSI_ESC}1;36m"
+        WHITE="${ANSI_ESC}1;37m"
+
+        DARKGRAY="${ANSI_ESC}0;30m"
+        DARKRED="${ANSI_ESC}0;31m"
+        DARKGREEN="${ANSI_ESC}0;32m"
+        DARKYELLOW="${ANSI_ESC}0;33m"
+        DARKBLUE="${ANSI_ESC}0;34m"
+        DARKPINK="${ANSI_ESC}0;35m"
+        DARKCYAN="${ANSI_ESC}0;36m"
+        DARKWHITE="${ANSI_ESC}0;37m"
+
+        SUCCESS=$GREEN
+        WARNING=$YELLOW
+        FAILURE=$RED
+        NOOP=$BLUE
+        ON=$SUCCESS
+        OFF=$FAILURE
+        ERROR=$FAILURE
+
+    else
+
+        SET_COL_CHAR=
+        SET_COL_STATUS=
+        SET_COL_INFO=
+        SET_COL_ELT=
+
+        SET_BEGINCOL=
+
+        NORMAL=
+        RED=
+        GREEN=
+        YELLOW=
+        BLUE=
+        GRAY=
+        WHITE=
+
+        DARKGRAY=
+        DARKRED=
+        DARKGREEN=
+        DARKYELLOW=
+        DARKBLUE=
+        DARKPINK=
+        DARKCYAN=
+
+        SUCCESS=
+        WARNING=
+        FAILURE=
+        NOOP=
+        ON=
+        OFF=
+        ERROR=
+
+    fi
+
+    ansi_color="$choice"
+
+    export SET_COL_CHAR SET_COL_STATUS SET_COL_INFO SET_COL_ELT \
+           SET_BEGINCOL UP DOWN LEFT RIGHT SAVE RESTORE NORMAL \
+           GRAY RED GREEN YELLOW BLUE PINK CYAN WHITE DARKGRAY \
+           DARKRED DARKGREEN DARKYELLOW DARKBLUE DARKPINK DARKCYAN \
+           SUCCESS WARNING FAILURE NOOP ON OFF ERROR ansi_color
+}
+
+
+e() { printf "%s" "$*"; }
+
+warn() { e "${YELLOW}Warning:$NORMAL" "$*"$'\n' >&2 ; }
+info() { e "${BLUE}II$NORMAL" "$*"$'\n' >&2 ; }
+verb() { [ -z "$VERBOSE" ] || e "$*"$'\n' >&2; }
+debug() { [ -z "$DEBUG" ] || e "$*"$'\n' >&2; }
+err() { e "${RED}Error:$NORMAL $*"$'\n' >&2 ; }
+die() { err "$@" ; exit 1; }
+
+ansi_color "${ansi_color:-tty}"
+
+
+get_path() { (
+    IFS=:
+    for d in $PATH; do
+        filename="$d/$1"
+        [ -f "$filename" -a -x "$filename" ] && {
+            echo "$d/$1"
+            return 0
+        }
+    done
+    return 1
+) }
+
 
+depends() {
+    ## Avoid colliding with variables that are created with depends.
+    local __i __path __new_name
+
+    for __i in "$@"; do
+        if ! __path=$(get_path "$__i"); then
+            __new_name="$(echo "${__i//-/_}")"
+            if [ "$__new_name" != "$__i" ]; then
+                depends "$__new_name"
+            else
+                err "dependency check: couldn't find '$__i' required command." >&2
+                exit 1
+            fi
+        else
+            if ! test -z "$__path" ; then
+                export "$(echo "${__i//- /__}")"="$__path"
+            fi
+        fi
+    done
+}
+
+
+get_os() {
+    local uname_output
     uname_output="$(uname -s)"
     case "${uname_output}" in
-        Linux*)   machine=linux;;
-        Darwin*)  machine=mac;;
-        CYGWIN*)  machine=cygwin;;
-        MINGW*)   machine=mingw;;
-        *)        machine="UNKNOWN:${uname_output}"
+        Linux*)   e linux;;
+        Darwin*)  e mac;;
+        CYGWIN*)  e cygwin;;
+        MINGW*)   e mingw;;
+        *)        e "UNKNOWN:${uname_output}";;
     esac
-    echo "${machine}"
 }
 
 
@@ -232,15 +380,15 @@ mk_docker_run_options() {
 
     filename=$(mktemp -p /tmp/ -t launch_opts-XXXXXXXXXXXXXXXX)
     {
-        printf "%s\0" "${docker_run_opts[@]}"
+        p0 "${docker_run_opts[@]}"
     } > "$filename"
     sha=$(sha256sum "$filename")
     sha=${sha:0:64}
     dest="$COMPOSE_VAR/sessions/$sha"
     {
-        printf "%s\0" "-v" "$dest:$dest"
-        printf "%s\0" "-e" "COMPOSE_LAUNCHER_OPTS=$dest"
-        printf "%s\0" "-e" "COMPOSE_LAUNCHER_BIN=$COMPOSE_LAUNCHER_BIN"
+        p0 "-v" "$dest:$dest"
+        p0 "-e" "COMPOSE_LAUNCHER_OPTS=$dest"
+        p0 "-e" "COMPOSE_LAUNCHER_BIN=$COMPOSE_LAUNCHER_BIN"
     } >> "$filename"
     mkdir -p "$COMPOSE_VAR"/sessions
     mv "$filename" "$dest"
@@ -303,14 +451,17 @@ run() {
         fi
     done < <(cat "$COMPOSE_LAUNCHER_OPTS")
 
-    if [ -t 0 ]; then
-        docker_run_opts+=("-i")
-    fi
-    if [ -t 1 ]; then
-        docker_run_opts+=("-t")
-    fi
+    [ -t 0 ] && docker_run_opts+=("-i")
+    [ -t 1 ] && docker_run_opts+=("-t")
     exec docker run --rm "${docker_run_opts[@]}" "${COMPOSE_DOCKER_IMAGE}" "$@"
 }
 
 
+##
+## Code
+##
+
+
+depends readlink
+
 run "$@"