added maven prompt

_powerline_config.lua.sample

@@ -57,4 +57,7 @@ plc_hg_conflictSymbol = "!"
 -- You can use "  " conflict symbol with 'Anonymous Powerline' font.
 
 -- OPTIONAL. npm Symbol used in the NPM segment as visual indicator.
---plc_npm_npmSymbol = "NPM"
+--plc_npm_npmSymbol = "NPM"
+
+-- OPTIONAL. maven Symbol used in the maven segment as visual indicator.
+--plc_npm_npmSymbol = "MVN"

powerline_maven.lua

@@ -0,0 +1,71 @@
+local function get_pom_xml_dir(path)
+
+ -- return parent path for specified entry (either file or directory)
+ local function pathname(path)
+ local prefix = ""
+ local postfix = ""
+ local i = path:find("[\\/:][^\\/:]*$")
+ if i then
+ prefix = path:sub(1, i-1)
+
+ end
+ return prefix
+ end
+
+ if not path or path == '.' then path = clink.get_cwd() end
+
+ local parent_path = pathname(path)
+ return io.open(path..'\\pom.xml') or (parent_path ~= path and get_pom_xml_dir(parent_path) or nil)
+end
+
+-- * Segment object with these properties:
+---- * isNeeded: sepcifies whether a segment should be added or not. For example: no Git segment is needed in a non-git folder
+---- * text
+---- * textColor: Use one of the color constants. Ex: colorWhite
+---- * fillColor: Use one of the color constants. Ex: colorBlue
+local segment = {
+ isNeeded = false,
+ text = "",
+ textColor = colorWhite,
+ fillColor = colorCyan
+}
+
+---
+-- Sets the properties of the Segment object, and prepares for a segment to be added
+---
+local function init()
+ segment.isNeeded = get_pom_xml_dir()
+ if segment.isNeeded then
+ local package_info = segment.isNeeded:read('*a')
+ segment.isNeeded:close()
+
+ local package_name = string.match(package_info, '<name>%s*(%g-)%s*</name>')
+ if package_name == nil then
+ package_name = ''
+ end
+
+ local package_version = string.match(package_info, '<version>%s*(%g-)%s*</version>')
+ if package_version == nil then
+ package_version = ''
+ end
+
+ if plc_mvn_mvnSymbol then
+ segment.text = " "..mvnSymbol.." "..package_name.."@"..package_version.." "
+ else
+ segment.text = " "..package_name.."@"..package_version.." "
+ end 
+ end
+end 
+
+---
+-- Uses the segment properties to add a new segment to the prompt
+---
+local function addAddonSegment()
+ init()
+ if segment.isNeeded then 
+ addSegment(segment.text, segment.textColor, segment.fillColor)
+ end 
+end 
+
+-- Register this addon with Clink
+clink.prompt.register_filter(addAddonSegment, 60)