Merge pull request #161 from ogr3/is_function

Custom theme using prompt_callback

themes/TruncatedPwd_WindowTitle.bgptheme

@@ -0,0 +1,54 @@
+##############################################################################
+# Changes the prompt to a Debian-style one that truncates pwd to a max length
+# depending on the terminal column width. Also uses the prompt_callback 
+# function of bash-git-prompt to set the window title to almost the same 
+# Debian-style.
+#
+# The prompt will use a Debian-style on the form
+#
+# [user@host: <truncated PWD>] [bash-git-prompt-info] <exit status>
+# HH:MM $ 
+#
+# The window title will have the form
+# user@host: <truncated PWD>
+#
+# Example usage:
+# if [ -f ~/.bash-git-prompt/gitprompt.sh ]; then
+#   GIT_PROMPT_THEME=TruncatedPwd_WindowTitle
+#   source ~/.bash-git-prompt/gitprompt.sh
+# fi
+#
+# oGre <oGre@muppfarmen.se> [https://github.com/ogr3]
+##############################################################################
+override_git_prompt_colors() {
+  GIT_PROMPT_THEME_NAME="TruncatedPwd_WindowTitle"
+
+  #Sets the window title to the given argument string
+  function gp_set_title {
+    echo -ne "\033]0;"$@"\007"
+  }
+
+  #Helper function that truncates $PWD depending on window width
+  function gp_truncate_pwd {
+    local newPWD="${PWD/#$HOME/~}"
+    local pwdmaxlen=$((${COLUMNS:-80}/3))
+    [ ${#newPWD} -gt $pwdmaxlen ] && newPWD="...${newPWD:3-$pwdmaxlen}"
+    echo -n "$newPWD"
+  }
+
+  #Overrides the prompt_callback function used by bash-git-prompt
+  function prompt_callback {
+    local PS1="\u@\h: $(gp_truncate_pwd)"
+    gp_set_title $PS1
+    echo -n "[${PS1}]${ResetColor}"
+  }
+
+  Time12a="\$(date +%H:%M)"
+  
+  GIT_PROMPT_START_USER="${Yellow}"
+  GIT_PROMPT_START_ROOT="${GIT_PROMPT_START_USER}"
+  GIT_PROMPT_END_USER=" _LAST_COMMAND_INDICATOR_\n${White}${Time12a}${ResetColor} $ "
+  GIT_PROMPT_END_ROOT=" _LAST_COMMAND_INDICATOR_\n${White}${Time12a}${ResetColor} # "
+}
+
+reload_git_prompt_colors "TruncatedPwd_WindowTitle"