art.py

'''
Feel free to modify and/or enhance this tool. Also feel free to fix bugs you found.
I would be happy if you could share your modified version on the blog, where this tool
was posted.

Blog-URL: http://www.droidnova.com/android-resource-tracker,723.html
Project Page: http://code.google.com/p/androidresourcetracker

This tool is from a developer for developers, so be like a good colleague and share your
improvements to this tool with the others.

EXPLIZIT: No license... I trust your good will... if you get rich, share with me :)

Created on 24.09.2010

@version: 1.0.1
@author: Martin Breuer (aka WarrenFaith)
'''

import sys
import os
import re
import glob

helpInformation = '''This is a tool that help you to find out, if a resource is used.
Parameter:
 -h                           : shows this help
 -i                           : root directory of your android project
 -v                           : show all matches
 --unused-only                : shows only unused elements - does not work with --used-only
 --used-only                  : shows on used elements - does not work with --unused-only
 --types string:id:drawable   : show only the specified types'''

rootProjectDir = None
elementPath = ""
verbose = False
usedOnly = False
unusedOnly = False
resourceArray = {}
sourceArray = {}
xmlFiles = []
resultArray = {}
inXml = 'inXml'
inSrc = 'inSrc'
unsure = 'unsure'
fetchOnly = []


## recursive walk through all directories ##
def findR(path):
    for dirs in os.listdir(path):
        if os.path.isdir(os.path.join(path, dirs)):
            if dirs == '.svn':
                break
            return findR(os.path.join(path, dirs))
    return path

def findXmlFiles(path):
    for dirs in os.listdir(path):
        if os.path.isdir(os.path.join(path, dirs)):
            if dirs != '.svn':
                findXmlFiles(os.path.join(path, dirs))
        else:
            if dirs.endswith(".xml"):
                newPath = os.path.basename(path)
                xmlFiles.append(os.path.join(newPath, dirs))
    return None

def collectSources(path):
    for dirs in os.listdir(path):
        if os.path.isdir(os.path.join(path, dirs)):
            if dirs == '.svn':
                break
            if not dirs.endswith('.java'):
                sourceArray[os.path.join(path, dirs)] = []
                collectSources(os.path.join(path, dirs))
    return None

def parseR(pathToR):
    patternResource = re.compile("\W(.+)\W(.+)=0x")
    patternClass = re.compile("class\W(.+)\W{")
    file = open(pathToR, "r")
    currentClass = "ERROR";
    for line in file:
        resourceHit = patternResource.search(line)
        classHit = patternClass.search(line)
        if classHit != None and classHit.group(1) != "R":
            currentClass = classHit.group(1)
            resourceArray[currentClass] = []
        if resourceHit != None:
            resourceArray[currentClass] += [resourceHit.group(2)]
    return None

def findPossibleMatchInSrc(type, item, searchString):
    pattern = re.compile(searchString + item)
    for dir in sourceArray:
        for files in os.listdir(dir):
            if files != ".svn" and files.endswith(".java"):
                file = open(os.path.join(dir, files), "r")
                lineNumber = 1
                for line in file:
                    if pattern.search(line) != None:
                        if verbose:
                            print(files + " - Line: " + str(lineNumber) + " :: " + line.strip())
                        resultArray[type][item][unsure] = True
                    lineNumber += 1
    return None

def findOccurenceInSrc(type, item, searchString):
    pattern = re.compile(searchString + item)
    for dir in sourceArray:
        for files in os.listdir(dir):
            if files != ".svn" and files.endswith(".java"):
                file = open(os.path.join(dir, files), "r")
                lineNumber = 1
                for line in file:
                    if pattern.search(line) != None:
                        if verbose:
                            print(files + " - Line: " + str(lineNumber) + " :: " + line.strip())
                        resultArray[type][item][inSrc] = True
                    lineNumber += 1
    return None

def findOccurenceInXml(type, item, plainTag, searchString):
    if searchString == "@style/":
        pattern = re.compile(searchString+"("+item+"|"+item.replace("_",".")+")")
    else:
        pattern = re.compile(searchString + item)
    for files in xmlFiles:
        file = open(os.path.join(elementPath, files), "r")
        lineNumber = 1
        for line in file:
            if pattern.search(line) != None:
                if verbose:
                    print(files + " - Line: " + str(lineNumber) + " :: " + line.strip())
                resultArray[type][item][inXml] = True
            lineNumber += 1
    return None


### Main programm ###
if len(sys.argv) == 1:
    print(helpInformation)
    sys.exit()
    
for index,arg in enumerate(sys.argv):
    if arg == "-h":
        print(helpInformation)
        sys.exit()
    if arg == "-i":
        if len(sys.argv) <= index + 1:
            print('''Given path is missing...''')
            sys.exit()
        rootProjectDir = sys.argv[index + 1]
        elementPath = os.path.join(rootProjectDir, "res")
    if arg == "-v":
        verbose = True
    if arg == "--used-only":
        usedOnly = True
    if arg == "--unused-only":
        unusedOnly = True;
    if arg == "--types":
        if len(sys.argv) <= index + 1:
            print("Given element typ or types missing...")
            sys.exit()
        fetchOnly = sys.argv[index + 1].split(":")

if unusedOnly and usedOnly:
    print('''--used-only and --unused-only can't be used together.
Remove one parameter...''')
    sys.exit()

print("Processing, fetching, working...")

# collect all src files
collectSources(os.path.join(rootProjectDir, "src"))

# find all xml files
findXmlFiles(os.path.join(rootProjectDir, "res"))
#add manifest
xmlFiles.append(os.path.join(rootProjectDir, "AndroidManifest.xml"))

# read the R class
os.chdir(rootProjectDir)
for srcDirs in glob.glob('gen'):
    rclass = os.path.join(findR(os.path.join(rootProjectDir, srcDirs)), "R.java")
    parseR(rclass)
    for entry in resourceArray:
        resultArray[entry] = {}
        for item in resourceArray[entry]:
            resultArray[entry][item] = {}
            resultArray[entry][item][inSrc] = False
            resultArray[entry][item][inXml] = False
            resultArray[entry][item][unsure] = False
            findOccurenceInSrc(entry, item, entry + ".")
            findOccurenceInXml(entry, item, entry + "." + item, "@" + entry + "/")
            findPossibleMatchInSrc(entry, item, 'getIdentifier\(\s*?\"')
            
for type in resultArray:
    if type in fetchOnly or len(fetchOnly) is 0:
        for element,matches in resultArray[type].items():
            if matches[inSrc] is False and matches[inXml] is False and matches[unsure] is False:
                if usedOnly == False:
                    print("Unused:              " + type + "." + element)
            elif matches[inSrc] is True and matches[inXml] is True and matches[unsure] is True:
                if unusedOnly == False:
                    print("Used in src and xml: " + type + "." + element)
            elif matches[inSrc] is True or matches[unsure] is True and matches[inXml] is False:
                if unusedOnly == False:
                    print("Used in src:         " + type + "." + element)
            elif matches[inSrc] is False and matches[unsure] is False and matches[inXml] is True:
                if unusedOnly == False:
                    print("Used in xml:         " + type + "." + element)