feat: truncate prompt current_directory and title to keep last compon…

…ents

close #336

README.md

@@ -65,7 +65,8 @@ Fully **customizable** (colors, symbols and features):
   - Async update when [configured with fish-async-prompt](https://github.com/pure-fish/pure/wiki/Async-git-Prompt) ;
 - Update terminal title with _current folder_ and _command_ ;
 - Detect when running in a container ;
-- Shorten _current folder_ component 🏴;
+- Shorten _current folder_ component in prompt and window title 🏴;
+- Truncate _current folder_ component in prompt and window title 🏴;
 
 🏴: Enabled or disabled via a [feature flag](#-features-flags).
 
@@ -117,6 +118,8 @@ set --universal pure_color_system_time pure_color_mute
 | **`pure_show_subsecond_command_duration`**               | `false` | Show subsecond (ex. 1.5s) in command duration.                                                                                                                      |
 | **`pure_show_system_time`**                              | `false` | `true`: shows system time before the prompt symbol (as `%H:%M:%S`).                                                                                                 |
 | **`pure_threshold_command_duration`**                    | `5`     | Show command duration when above this value (seconds).                                                                                                              |
+| **`pure_truncate_prompt_current_directory_keeps`**       | `0`    | Truncate working directory path in prompt, but keeps the last to `n` components (`0` full path in current directory)                                               |
+| **`pure_truncate_window_title_current_directory_keeps`** | `0`    | Truncate working directory path in window title, but keeps the last to `n` components (`0` full path in window title)                                         |
 
 ### 🎨 Colours
 

conf.d/pure.fish

@@ -20,6 +20,7 @@ _pure_set_default pure_color_prompt_on_success pure_color_success
 # Current Working Directory
 _pure_set_default pure_color_current_directory pure_color_primary
 _pure_set_default pure_shorten_prompt_current_directory_length 0
+_pure_set_default pure_truncate_prompt_current_directory_keeps -1
 
 # Git
 _pure_set_default pure_enable_git true
@@ -75,6 +76,7 @@ _pure_set_default pure_reverse_prompt_symbol_in_vimode true
 # Title
 _pure_set_default pure_symbol_title_bar_separator -
 _pure_set_default pure_shorten_window_title_current_directory_length 0
+_pure_set_default pure_truncate_window_title_current_directory_keeps -1
 
 # Check for new release on startup
 _pure_set_default pure_check_for_new_release false

functions/_pure_parse_directory.fish

@@ -10,5 +10,14 @@ function _pure_parse_directory \
             set folder (fish_prompt_pwd_dir_length=1 prompt_pwd)
         end
     end
+
+    if test $pure_truncate_prompt_current_directory_keeps -ge 1
+        set folder (
+            string split '/' $folder \
+                | tail -n $pure_truncate_prompt_current_directory_keeps \
+                | string join '/'
+        )
+    end
+
     echo $folder
 end

tests/_pure.test.fish

@@ -344,3 +344,15 @@ before_all
     source (status dirname)/../conf.d/pure.fish
     echo $pure_color_k8s_namespace
 ) = pure_color_primary
+
+@test "configure: pure_truncate_prompt_current_directory_keeps" (
+    set --erase pure_truncate_prompt_current_directory_keeps
+    source (status dirname)/../conf.d/pure.fish
+    echo $pure_truncate_prompt_current_directory_keeps
+) = -1
+
+@test "configure: pure_truncate_window_title_current_directory_keeps" (
+    set --erase pure_truncate_window_title_current_directory_keeps
+    source (status dirname)/../conf.d/pure.fish
+    echo $pure_truncate_window_title_current_directory_keeps
+) = -1

tests/_pure_parse_directory.test.fish

@@ -3,35 +3,39 @@ source (status dirname)/../functions/_pure_parse_directory.fish
 @echo (_print_filename (status filename))
 
 
-function before_all
+function before_each
     _purge_configs
     _disable_colors
     set --universal pure_shorten_prompt_current_directory_length 0
+    set --universal pure_truncate_prompt_current_directory_keeps 0
 end
 
-function after_all
+function after_each
     set --erase pure_shorten_prompt_current_directory_length
 end
 
-before_all
+before_each
 @test "_pure_parse_directory: returns current directory" (
     mkdir -p /tmp/current/directory/
     cd /tmp/current/directory/
 
     _pure_parse_directory
 ) = $PWD
 
+before_each
 @test '_pure_parse_directory: replaces $HOME by ~' (
     pushd $HOME
 
     _pure_parse_directory
     popd
 ) = '~'
 
+before_each
 @test '_pure_parse_directory: shortens directory in prompt' (
     string length (_pure_parse_directory 1)
 ) -lt (string length $PWD)
 
+before_each
 @test '_pure_parse_directory: shorten current directory' (
     set --universal pure_shorten_prompt_current_directory_length 2
 
@@ -40,5 +44,36 @@ before_all
 
     _pure_parse_directory
 ) = /tm/cu/directory
+after_each
+
+before_each
+@test '_pure_parse_directory: truncate 1, keeps only last directory name from current directory path' (
+    set --universal pure_truncate_prompt_current_directory_keeps 1
+
+    mkdir -p /tmp/current/directory/
+    cd /tmp/current/directory/
+
+    _pure_parse_directory
+) = directory
+
+before_each
+@test '_pure_parse_directory: truncate n last component from current directory path' (
+    set --universal pure_truncate_prompt_current_directory_keeps 2
+
+    mkdir -p /tmp/current/directory/
+    cd /tmp/current/directory/
+
+    _pure_parse_directory
+) = current/directory
+
+before_each
+@test '_pure_parse_directory: truncate 0, keeps full current directory path' (
+    set --universal pure_truncate_prompt_current_directory_keeps 0
+
+    mkdir -p /tmp/current/directory/
+    cd /tmp/current/directory/
+
+    _pure_parse_directory
+) = /tmp/current/directory
+
 
-after_all

tests/_pure_prompt_current_folder.test.fish

@@ -8,6 +8,7 @@ function before_all
     _purge_configs
     _disable_colors
     set --universal pure_shorten_prompt_current_directory_length 0
+    set --universal pure_truncate_prompt_current_directory_keeps 0
 end
 
 function after_all