Refactor(bash_prompt): Reuse `$PS1`

[dotfiles.git] / admin / prog / bash_prompt

diff --git a/admin/prog/bash_prompt b/admin/prog/bash_prompt
index 57ccf72b8d2a740e7c597d0d5566e1ec806559fd..a60560240e3d53c8e5901ee5de4450a353432077 100644 (file)
--- a/admin/prog/bash_prompt
+++ b/admin/prog/bash_prompt
@@ -6,6 +6,10 @@ cgmem_which_prompt() {
    fi
 }
 
+# Cut directories to 20% of the terminal width; add space for 3 dots
+_DIR_LENGTH=`awk "END { print int(0.2 * $COLUMNS) }" </dev/null`
+_DIR_LENGTH_DOTS=`expr $_DIR_LENGTH + 3`
+
 short_curdir() {
    if [ "$PWD" = / ]; then
       echo /
@@ -17,8 +21,8 @@ short_curdir() {
    fi
    local _short_curdir
    _short_curdir="${PWD##*/}" # cut all directories, get base name
-   if [ "${#_short_curdir}" -gt 18 ]; then
-      _short_curdir="${_short_curdir::15}..." # cut long string
+   if [ "${#_short_curdir}" -gt $_DIR_LENGTH_DOTS ]; then
+      _short_curdir="${_short_curdir::$_DIR_LENGTH}..." # cut long string
    fi
    echo "${_short_curdir}"
 }
@@ -108,12 +112,12 @@ set_prompts() {
       # in the terminal title
       case "$TERM" in
          *rxvt*|screen*|*term*|vt100)
-            PS1="\[\033]0;${_COMMON_PROMPT}\007\]" # Set xterm title/icon
+            PS1="\033]0;${_COMMON_PROMPT}\007" # Set xterm title/icon
             case "$TERM" in
                screen*)
-                  PS1="\[\033P\033]0;${_COMMON_PROMPT}\007\033\\\\\]" # Set xterm title/icon under screen/tmux
+                  PS1="\033P${PS1}\033\\\\" # Set xterm title/icon under screen/tmux
                   if [ -z "$MC_SID" ]; then
-                     PS1+="\[\033k${_COMMON_PROMPT}\033\\\\\]" # Set screen/tmux caption
+                     PS1+="\033k${_COMMON_PROMPT}\033\\\\" # Set screen/tmux caption
                   fi
                ;;
             esac
@@ -124,6 +128,10 @@ set_prompts() {
          ;;
       esac
 
+   # This is for .screenrc: shelltitle "\$ |$SHELL"
+   #PS1+='\033k\033\\'
+
+   PS1="\[$PS1\]"
    PS1+='${debian_chroot:+($debian_chroot)}'
    PS1+='`cgmem_which_prompt`\u@${HOSTNAME::5}:`short_curdir`'
    if test -x /usr/bin/git >/dev/null 2>&1; then
@@ -133,8 +141,5 @@ set_prompts() {
          PS1+='$(prompt_git)'
       #fi
    fi
-   # This is for .screenrc: shelltitle "\$ |$SHELL"
-   #PS1+='\[\033k\033\\\]'
    PS1+=' $SHLVL\$ '
-   export PS1
 }