feat(Nushell): trancate diractory path to git root

nushell/modules/pj_prompt.nu

@@ -215,12 +215,89 @@ def _pj_format_duration [ms: int] {
     $"($h)h ($m)m ($s)s ($ms_part)ms"
 }
 
-def _pj_truncate_pwd [pwd: string, length: int = 4] {
-    let home = ($env.HOME? | default "")
-    let normalized_pwd = (($pwd | into string) | str replace -a "\\" "/")
-    let normalized_home = (($home | into string) | str replace -a "\\" "/")
+def _pj_is_path_within [path: string, base: string] {
+    if ($base == "") {
+        return false
+    }
+    if ($path == $base) {
+        return true
+    }
+    ($path | str starts-with $"($base)/")
+}
 
-    let shown = if ($normalized_home != "" and ($normalized_pwd | str starts-with $normalized_home)) {
+def _pj_git_root_normalized [] {
+    if (which ^git | is-empty) {
+        return ""
+    }
+
+    let top = (^git rev-parse --show-toplevel | complete)
+    if ($top.exit_code != 0) {
+        return ""
+    }
+
+    let raw = (($top.stdout | str trim) | str replace -a "\\" "/")
+    if ($raw == "/") {
+        "/"
+    } else {
+        ($raw | str trim -r -c "/")
+    }
+}
+
+def _pj_truncate_pwd [pwd: string, length: int = 4] {
+    let home = (($nu.home-dir? | default ($nu.home-path? | default ($env.HOME? | default ""))) | into string)
+    let normalized_pwd_raw = (($pwd | into string) | str replace -a "\\" "/")
+    let normalized_home_raw = (($home | into string) | str replace -a "\\" "/")
+
+    let normalized_pwd = if ($normalized_pwd_raw == "/") {
+        "/"
+    } else {
+        ($normalized_pwd_raw | str trim -r -c "/")
+    }
+
+    let normalized_home = if ($normalized_home_raw == "/") {
+        "/"
+    } else {
+        ($normalized_home_raw | str trim -r -c "/")
+    }
+
+    let in_home = if ($normalized_home == "") {
+        false
+    } else {
+        (_pj_is_path_within $normalized_pwd $normalized_home)
+    }
+
+    let repo_root = (_pj_git_root_normalized)
+    let in_repo = (_pj_is_path_within $normalized_pwd $repo_root)
+
+    if $in_repo {
+        let repo_name = ($repo_root | path basename)
+        let rel = if ($normalized_pwd == $repo_root) {
+            ""
+        } else {
+            ($normalized_pwd | str substring (($repo_root | str length) + 1)..)
+        }
+
+        let rel_parts = if ($rel == "") {
+            []
+        } else {
+            ($rel | split row "/" | where {|it| $it != "" })
+        }
+
+        let keep_rel_count = if ($length <= 1) { 0 } else { $length - 1 }
+        let shown_rel_parts = if (($rel_parts | length) <= $keep_rel_count) {
+            $rel_parts
+        } else {
+            ($rel_parts | last $keep_rel_count)
+        }
+
+        if (($shown_rel_parts | length) == 0) {
+            return $"…/($repo_name)"
+        } else {
+            return $"…/($repo_name)/($shown_rel_parts | str join '/')"
+        }
+    }
+
+    let shown = if $in_home {
         let rest = ($normalized_pwd | str substring ($normalized_home | str length)..)
         if ($rest == "") { "~" } else { $"~($rest)" }
     } else {
@@ -235,8 +312,9 @@ def _pj_truncate_pwd [pwd: string, length: int = 4] {
         ($shown | str substring 2.. | split row "/" | where {|it| $it != "" })
     } else if ($shown | str starts-with "/") {
         ($shown | str substring 1.. | split row "/" | where {|it| $it != "" })
-    } else if ($shown =~ '^[A-Za-z]:/') {
-        ($shown | str substring 3.. | split row "/" | where {|it| $it != "" })
+    } else if ($shown =~ '^[A-Za-z]:(/|$)') {
+        let start = if ($shown =~ '^[A-Za-z]:/') { 3 } else { 2 }
+        ($shown | str substring $start.. | split row "/" | where {|it| $it != "" })
     } else {
         ($shown | split row "/" | where {|it| $it != "" })
     }
@@ -245,7 +323,7 @@ def _pj_truncate_pwd [pwd: string, length: int = 4] {
         "~/"
     } else if ($shown | str starts-with "/") {
         "/"
-    } else if ($shown =~ '^[A-Za-z]:/') {
+    } else if ($shown =~ '^[A-Za-z]:(/|$)') {
         let drive = ($shown | str substring 0..1)
         $"($drive)/"
     } else {

nushell/modules/pj_zoxide.nu

@@ -59,6 +59,23 @@ def --env --wrapped __zoxide_zi [...rest:string] {
   cd $'(zoxide query --interactive -- ...$rest | str trim -r -c "\n")'
 }
 
+# Jump to git repository root when currently inside a repository.
+def --env __zoxide_zg [] {
+  if (which ^git | is-empty) {
+    return
+  }
+
+  let top = (^git rev-parse --show-toplevel | complete)
+  if ($top.exit_code != 0) {
+    return
+  }
+
+  let root = ($top.stdout | str trim -r -c "\n")
+  if ($root != "") {
+    cd $root
+  }
+}
+
 # =============================================================================
 #
 # Commands for zoxide. Disable these using --no-cmd.
@@ -66,6 +83,7 @@ def --env --wrapped __zoxide_zi [...rest:string] {
 
 export alias z = __zoxide_z
 export alias zi = __zoxide_zi
+export alias zg = __zoxide_zg
 
 # =============================================================================
 #