feat(shell): add rust + starship setup

bootstrap.sh

@@ -3,14 +3,19 @@
 # Ensuring steps are defined.
 . ./steps.sh
 
-TOTAL_STEPS=6
+TOTAL_STEPS=8
 
 # Refer to steps.sh for step definition.
 bootstrap() {
     ensure_apt_up_to_date
     ensure_apt_dependencies
-    ensure_omz
+    install_rust
     ensure_nvm
+    
+    # Shell & prompt setup
+    ensure_omz
+    install_and_configure_starship
+
     inject_shell_configuration
     inject_vim_configuration
 }

files/starship.toml

@@ -0,0 +1,73 @@
+format = """
+[](#9A348E)\
+$username\
+$os\
+[](bg:#33658a fg:#9A348E)\
+$time\
+[](bg:#DA627D fg:#33658a)\
+$directory\
+[](fg:#DA627D bg:#3208e0)\
+$git_branch\
+$git_status\
+[](fg:#4208e0 bg:#9A348E)\
+$python\
+[](fg:#9A348E)
+> 
+"""
+
+# Disable the blank line at the start of the prompt
+add_newline = true
+
+[python]
+style = "bg:#9A348E"
+format = '[${symbol}${pyenv_prefix}(${version} )(\($virtualenv\) )]($style)'
+
+
+# You can also replace your username with a neat symbol like   or disable this
+# and use the os module below
+[username]
+show_always = true
+style_user = "bg:#9A348E"
+style_root = "bg:#9A348E"
+format = '[$user ]($style)'
+disabled = false
+
+# An alternative to the username module which displays a symbol that
+# represents the current operating system
+[os]
+style = "bg:#9A348E"
+disabled = true # Disabled by default
+
+[directory]
+style = "bg:#DA627D"
+format = "[ $path ]($style)"
+truncation_length = 3
+truncation_symbol = "…/"
+
+# Here is how you can shorten some long paths by text replacement
+# similar to mapped_locations in Oh My Posh:
+[directory.substitutions]
+"Documents" = "󰈙 "
+"Downloads" = " "
+"Music" = " "
+"Pictures" = " "
+# Keep in mind that the order matters. For example:
+# "Important Documents" = " 󰈙 "
+# will not be replaced, because "Documents" was already substituted before.
+# So either put "Important Documents" before "Documents" or use the substituted version:
+# "Important 󰈙 " = " 󰈙 "
+
+[git_branch]
+symbol = ""
+style = "bg:#4208e0"
+format = '[ $symbol $branch ]($style)'
+
+[git_status]
+style = "bg:#4208e0"
+format = '[$all_status$ahead_behind ]($style)'
+
+[time]
+time_format = "%T"
+style = "bg:#33658A"
+format = '[ $time ]($style)'
+disabled = false

steps.sh

@@ -1,13 +1,20 @@
 #!/bin/bash
 
 STEP_COUNT=0
+SUBSTEP_COUNT=0
 
 # Helpers to pretty-print step titles and count.
 pre_step() {
     STEP_COUNT=$(($STEP_COUNT + 1))
+    SUBSTEP_COUNT=0
     echo -e "\e[1m[$STEP_COUNT/$TOTAL_STEPS] <====== $1 =======>\e[0m"
 }
 
+pre_substep() {
+    SUBSTEP_COUNT=$(($SUBSTEP_COUNT + 1))
+    echo -e "\e[1m[$STEP_COUNT.$SUBSTEP_COUNT] <====== $1 =======>\e[0m"
+}
+
 # Ensures that all existing Apt packages are up-to-date.
 ensure_apt_up_to_date() {
     pre_step "Ensuring apt packages are up-to-date" 
@@ -38,11 +45,48 @@ ensure_apt_dependencies() {
     fi
 }
 
+# Installs the rustup toolchain if not installed.
+# If installed, the toolchain is updated.
+install_rust() {
+    pre_step "Install and configure Rust toolchain"
+
+    if [ -z "$(rustup --version 2> /dev/null)" ]; then
+        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+    else
+        rustup update
+    fi
+}
+
 ensure_omz() {
     pre_step "Installs Oh My ZSH"
     curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh | bash
 }
 
+# Installs the Starship prompt and adds an initialization
+# command to the shell configuration file.
+#
+# Requires: install_rust
+install_and_configure_starship() {
+    pre_step "Install and configure Starship"
+
+    pre_substep "Install Starship via cargo"
+    cargo install starship --locked
+
+    pre_substep "Add initialization command to shell configuration"
+    STARSHIP_INIT_COMMAND='eval "$(starship init zsh)"'
+    if [ -z "$(rg "starship init zsh" ~/.zshrc)" ]; then 
+        echo "#Initialize Starship prompt\n$STARSHIP_INIT_COMMAND" >> ~/.zshrc
+    fi
+
+    pre_substep "Copy configuration in configuration directory"
+    STARSHIP_CONFIGURATION_PATH=~/.config/starship.toml
+    if [ -f $STARSHIP_CONFIGURATION_PATH ]; then
+        cp $STARSHIP_CONFIGURATION_PATH $STARSHIP_CONFIGURATION_PATH.old
+    fi
+
+    cp ./files/starship.toml $STARSHIP_CONFIGURATION_PATH
+}
+
 ensure_nvm() {
     pre_step "Installing nvm to manage node version"
     curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash