import os
import sys
import xml.etree.ElementTree as ET
from sys import argv as arg

#
# the goal is to parse SW4STM32 project configs files to get
#    list of files to compile
#    cflags
#    ldflags


print "start"

# arg1: path of the project
prj=arg[1]
# arg2: name of the build configuration
buildconfig=arg[2]
# arg3: root of the compilation
myroot=arg[3]

confdir=myroot+"/out/"+buildconfig+"/conf"

print "prj: "+prj
print "myroot: "+myroot
print "confdir: "+confdir
print "buildconfig: "+buildconfig

os.chdir(prj)

proj_tree = ET.parse(".project")
cproj_tree = ET.parse(".cproject")

#os.chdir(myroot)

if os.path.exists(confdir)!=True:
	os.mkdir(confdir)

if prj.find("(")!=-1:
	print "bad prj path"
	sys.stderr.write("bad prj path: "+prj+"\n")
	exit(1)

#
# convert path and checks that path is valid
#
def fullpath(filename):
	# get absolute path
	p=os.path.abspath(filename);

	# workaround: there is a mistake in some projects
	p=p.replace("STM32_USB_HOST_Library","STM32_USB_Host_Library")
	# some path contain windows style
	p=p.replace("\\","/")
	# containts space at the end
	p=p.replace(" ","")

	# check if path is valid
	#print "check path: "+p
	if os.path.exists(p)!=True:
			print "prj: "+prj
			print "original path: "+filename
			sys.stderr.write("error check path: "+p+" fails\n")
			exit(1);

	return p


#
# get the source code file list
#
print "file list"

f=open(confdir+"/config.in", 'w')

root = proj_tree.getroot()

f.write("CSRC += \\\n")


for i in root.iter('link'):
	a=i.find('locationURI')
	if a==None:
		a=i.find('location')
	if a==None:
		print "could not find any file"
		exit(1)

	if a.text is None:
		print "no text"
	else:
		#print "text:"+a.text
		temp=a.text

		if ((temp.find(".txt")==-1) & (temp.find(".gdb")==-1) & (temp.find(".launch")==-1) & (temp.find(".sh")==-1) & (temp.find("README")==-1)):
			temp=temp.replace("PARENT-1-PROJECT_LOC/", "../")
			temp=temp.replace("PARENT-2-PROJECT_LOC/", "../../")
			temp=temp.replace("PARENT-3-PROJECT_LOC/", "../../../")
			temp=temp.replace("PARENT-4-PROJECT_LOC/", "../../../../")
			temp=temp.replace("PARENT-5-PROJECT_LOC/", "../../../../../")
			temp=temp.replace("PARENT-6-PROJECT_LOC/", "../../../../../../")
			temp=temp.replace("PARENT-7-PROJECT_LOC/", "../../../../../../../")
			temp=temp.replace("PROJECT_LOC/", "../")

			#print temp
			temp=fullpath(temp)

			f.write(temp+" \\\n")

f.write("\n")


cflags=""
ldlibs=""
ldscript=""

root = cproj_tree.getroot()

count=0
for j in root.iter('configuration'):
	temp=j.get('name')
	if temp == buildconfig:
		for i in j.iter('option'):
			a=i.get('superClass')
			if a == 'gnu.c.compiler.option.include.paths':
				for j in i.iter('listOptionValue'):
					temp=j.get('value')
					if temp != "":
						temp=temp.replace("\\","/")
						#workaround remove first occurency of "../"
						temp=temp.replace("../", "",1)
						temp=fullpath(temp)
						#print temp
						cflags=cflags+" -I"+temp+" \\\n"

			if a == 'gnu.c.compiler.option.preprocessor.def.symbols':
				for j in i.iter('listOptionValue'):
					temp=j.get('value')
					if temp != "":
						#print temp
						cflags=cflags+" -D"+temp+" \\\n"

			if a == 'fr.ac6.managedbuild.tool.gnu.cross.c.linker.script':
				temp=i.get('value')
				temp=temp.replace("../", "",1)
				temp=fullpath(temp)
				#print temp
				ldscript=temp

			if a == 'gnu.c.link.option.paths':
				for j in i.iter('listOptionValue'):
					temp=j.get('value')
					temp=temp.replace("../", "",1)
					temp=fullpath(temp)
					ldlibs=ldlibs+" -L"+temp+"/"

			if a == 'gnu.c.link.option.libs':
				for j in i.iter('listOptionValue'):
					temp=j.get('value')
					ldlibs=ldlibs+" -l"+temp


#workaround for STM327x6G_EVAL
#cflags=cflags+" -DUSE_IOEXPANDER"

print "cflags="+cflags
f.write("CFLAGS += "+cflags+"\n")
f.write("\n")

print "ldlibs="+ldlibs
f.write("LDLIBS += "+ldlibs+"\n")
f.write("\n")

f.write("LDSCRIPT += "+ldscript+"\n")
f.write("\n")

f.close();

print "exit"