added help to rain, fixed french comments

profile.d/rain.sh

@@ -39,33 +39,73 @@
 # ------------------------------------------------------------------------------
 rain()
 {
-    local step_duration=0.050
-    local base_color="white" # Par défaut
+    show_usage() {
+        echo -e "Usage: rain [OPTIONS]"
+        echo -e ""
+        echo -e "Options:"
+        echo -e "  -s, --speed NUM    Set the drop delay in seconds (default: 0.050)."
+        echo -e "                     Lower values = faster rain."
+        echo -e "  -c, --color COLOR  Set the color theme (default: white)."
+        echo -e "  -h, --help         Display this help message and exit."
+        echo -e ""
+        echo -e "Available Colors:"
+        echo -e "  \e[32mgreen\e[0m  : The classic Matrix digital rain"
+        echo -e "  \e[34mblue\e[0m   : Deep ocean blue gradients"
+        echo -e "  \e[31mred\e[0m    : Crimson/Blood rain"
+        echo -e "  \e[33myellow\e[0m : Amber and gold tones"
+        echo -e "  \e[36mcyan\e[0m   : Electric cyan/turquoise"
+        echo -e "  white  : Greyscale and white (original style)"
+        echo -e ""
+        echo -e "Example: rain --color green --speed 0.03"
+    }
 
-    # 1. Analyse des arguments
+    local step_duration=0.050
+    local base_color="white" # default color scheme, can be overridden by --color
+
+    # Analyse arguments
     while [[ "$#" -gt 0 ]]; do
         case $1 in
-            -s|--speed) step_duration="$2"; shift ;;
-            -c|--color) base_color="$2"; shift ;;
-            *) echo "Usage: rain [-s speed] [-c color]"; return 1 ;;
+            -s|--speed)
+                if [[ -n "$2" && ! "$2" =~ ^- ]]; then
+                    step_duration="$2"; shift
+                else
+                    echo -e "\e[31mError: --speed requires a numeric value.\e[0m"
+                    show_usage && return 1
+                fi
+                ;;
+            -c|--color)
+                if [[ -n "$2" && ! "$2" =~ ^- ]]; then
+                    base_color="$2"; shift
+                else
+                    echo -e "\e[31mError: --color requires a color name.\e[0m"
+                    show_usage && return 1
+                fi
+                ;;
+            -h|--help)
+                show_usage && return 0
+                ;;
+            *)
+                echo -e "\e[31mUnknown option: $1\e[0m"
+                show_usage && return 1
+                ;;
         esac
         shift
     done
 
-    # 2. Définition de la palette de couleurs (Gradients 256-couleurs)
+    # Define colors (256-colors gradients)
     local rain_colors=()
     case $base_color in
-        green)  # Vert style Matrix
+        green)  # Matrix style green
             for i in {22..28} {34..40} {46..48}; do rain_colors+=("\e[38;5;${i}m"); done ;;
-        blue)   # Bleu profond à clair
+        blue)   # Deep ocean blues
             for i in {17..21} {27..33} {39..45}; do rain_colors+=("\e[38;5;${i}m"); done ;;
-        red)    # Rouge sang à vif
+        red)    # Crimson / blood red
             for i in {52..52} {88..88} {124..124} {160..160} {196..201}; do rain_colors+=("\e[38;5;${i}m"); done ;;
-        yellow) # Ambre / Or
+        yellow) # Amber / gold
             for i in {58..58} {100..100} {142..142} {184..184} {226..229}; do rain_colors+=("\e[38;5;${i}m"); done ;;
-        cyan)   # Turquoise
+        cyan)   # Electric cyan / turquoise
             for i in {30..31} {37..38} {44..45} {50..51}; do rain_colors+=("\e[38;5;${i}m"); done ;;
-        *)      # Gris/Blanc par défaut (ton script original)
+        *)      # Greyscale / white (original style)
             rain_colors=("\e[37m" "\e[37;1m")
             for i in {244..255}; do rain_colors+=("\e[38;5;${i}m"); done ;;
     esac