Merge pull request #1443 from davidpfarrell/shlvl

Adds shlvl segment to powerline themes

themes/powerline-multiline/README.md

@@ -9,6 +9,7 @@ A colorful multiline theme, where the first line shows information about your sh
 * Current path
 * Current username and hostname
 * Current time
+* Current shell level
 * An indicator when connected by SSH
 * An indicator when `sudo` has the credentials cached (see the `sudo` manpage for more info about this)
 * An indicator when the current shell is inside the Vim editor
@@ -61,6 +62,7 @@ The contents of both prompt sides can be "reordered", all the "segments" (every
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder
   hierarchy, only the directory you're currently in.
+* `shlvl` - Show the current shell level (based on `SHLVL` environment variable), but only if you are not in root shell
 
 Two variables can be defined to set the order of the prompt segments:
 

themes/powerline-multiline/powerline-multiline.theme.bash

@@ -64,6 +64,9 @@ IN_VIM_THEME_PROMPT_TEXT=${POWERLINE_IN_VIM_TEXT:="vim"}
 
 HOST_THEME_PROMPT_COLOR=${POWERLINE_HOST_COLOR:=0}
 
+SHLVL_THEME_PROMPT_COLOR=${POWERLINE_SHLVL_COLOR:=${HOST_THEME_PROMPT_COLOR}}
+SHLVL_THEME_PROMPT_CHAR=${POWERLINE_SHLVL_CHAR:="§"}
+
 POWERLINE_LEFT_PROMPT=${POWERLINE_LEFT_PROMPT:="scm python_venv ruby node cwd"}
 POWERLINE_RIGHT_PROMPT=${POWERLINE_RIGHT_PROMPT:="in_vim clock battery user_info"}
 

themes/powerline-naked/README.md

@@ -9,6 +9,7 @@ A colorful theme, where shows a lot information about your shell session.
 * Current path
 * Current username and hostname
 * Current time
+* Current shell level
 * An indicator when connected by SSH
 * An indicator when `sudo` has the credentials cached (see the `sudo` manpage for more info about this)
 * An indicator when the current shell is inside the Vim editor
@@ -59,6 +60,7 @@ The contents of the prompt can be "reordered", all the "segments" (every piece o
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder
   hierarchy, only the directory you're currently in.
+* `shlvl` - Show the current shell level (based on `SHLVL` environment variable), but only if you are not in root shell
 
 A variable can be defined to set the order of the prompt segments:
 

themes/powerline-naked/powerline-naked.theme.bash

@@ -60,6 +60,9 @@ IN_VIM_THEME_PROMPT_TEXT=${POWERLINE_IN_VIM_TEXT:="vim"}
 
 HOST_THEME_PROMPT_COLOR=${POWERLINE_HOST_COLOR:=254}
 
+SHLVL_THEME_PROMPT_COLOR=${POWERLINE_SHLVL_COLOR:=${HOST_THEME_PROMPT_COLOR}}
+SHLVL_THEME_PROMPT_CHAR=${POWERLINE_SHLVL_CHAR:="§"}
+
 POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby node cwd"}
 
 safe_append_prompt_command __powerline_prompt_command

themes/powerline-plain/README.md

@@ -7,6 +7,7 @@ A colorful theme, where shows a lot information about your shell session.
 * Current path
 * Current username and hostname
 * Current time
+* Current shell level
 * An indicator when connected by SSH
 * An indicator when `sudo` has the credentials cached (see the `sudo` manpage for more info about this)
 * An indicator when the current shell is inside the Vim editor
@@ -57,6 +58,7 @@ The contents of the prompt can be "reordered", all the "segments" (every piece o
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder
   hierarchy, only the directory you're currently in.
+* `shlvl` - Show the current shell level (based on `SHLVL` environment variable), but only if you are not in root shell
 
 A variable can be defined to set the order of the prompt segments:
 

themes/powerline-plain/powerline-plain.theme.bash

@@ -57,6 +57,9 @@ IN_VIM_THEME_PROMPT_TEXT=${POWERLINE_IN_VIM_TEXT:="vim"}
 
 HOST_THEME_PROMPT_COLOR=${POWERLINE_HOST_COLOR:=0}
 
+SHLVL_THEME_PROMPT_COLOR=${POWERLINE_SHLVL_COLOR:=${HOST_THEME_PROMPT_COLOR}}
+SHLVL_THEME_PROMPT_CHAR=${POWERLINE_SHLVL_CHAR:="§"}
+
 POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby node cwd"}
 
 safe_append_prompt_command __powerline_prompt_command

themes/powerline/README.md

@@ -11,6 +11,7 @@ A colorful theme, where shows a lot information about your shell session.
 * Current path
 * Current username and hostname
 * Current time
+* Current shell level
 * An indicator when connected by SSH
 * An indicator when `sudo` has the credentials cached (see the `sudo` manpage for more info about this)
 * An indicator when the current shell is inside the Vim editor
@@ -61,6 +62,7 @@ The contents of the prompt can be "reordered", all the "segments" (every piece o
 * `user_info` - Current user
 * `wd` - Working directory, like `cwd` but doesn't show the full folder
   hierarchy, only the directory you're currently in.
+* `shlvl` - Show the current shell level (based on `SHLVL` environment variable), but only if you are not in root shell
 
 A variable can be defined to set the order of the prompt segments:
 

themes/powerline/powerline.base.bash

@@ -162,6 +162,14 @@ function __powerline_aws_profile_prompt {
   fi
 }
 
+function __powerline_shlvl_prompt {
+  if [[ "${SHLVL}" -gt 1 ]]; then
+    local prompt="${SHLVL_THEME_PROMPT_CHAR}"
+    local level=$(( ${SHLVL} - 1))
+    echo "${prompt}${level}|${SHLVL_THEME_PROMPT_COLOR}"
+  fi
+}
+
 function __powerline_left_segment {
   local OLD_IFS="${IFS}"; IFS="|"
   local params=( $1 )

themes/powerline/powerline.theme.bash

@@ -60,6 +60,9 @@ IN_VIM_THEME_PROMPT_TEXT=${POWERLINE_IN_VIM_TEXT:="vim"}
 
 HOST_THEME_PROMPT_COLOR=${POWERLINE_HOST_COLOR:=0}
 
+SHLVL_THEME_PROMPT_COLOR=${POWERLINE_SHLVL_COLOR:=${HOST_THEME_PROMPT_COLOR}}
+SHLVL_THEME_PROMPT_CHAR=${POWERLINE_SHLVL_CHAR:="§"}
+
 POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby node cwd"}
 
 safe_append_prompt_command __powerline_prompt_command