'''
python wrapper for cdf plot
'''

import os,sys

filename1 = sys.argv[1]
filename2 = sys.argv[2]
output = sys.argv[3]
c1 = sys.argv[4].strip()
c2 = sys.argv[5].strip()
label1,label2 = sys.argv[6].strip().split(',')
title = sys.argv[8].strip()
log = sys.argv[7]



rf = open('tmp.r','w')

rf.write("options(warn=-1)\n")

rf.write("x1 <- read.table('"+filename1+"')\n")
rf.write("x2 <- read.table('"+filename2+"')\n")


rf.write("mycdf <- function(x1,x2) {\n")
rf.write("       sx1 <- sort(x1)\n")
rf.write("     sy1 <- c(1:length(sx1))/length(sx1)\n")
rf.write("     sx2 <- sort(x2)\n")
rf.write("     sy2 <- c(1:length(sx2))/length(sx2)\n")
rf.write("       mi <- min(c(x1,x2))\n")
rf.write("       ma <- max(c(x1,x2))\n")
rf.write("       sx1 <- c(mi,sx1,ma)\n")
rf.write("       sx2 <- c(mi,sx2,ma)\n")
rf.write("       sy1 <- c(0,sy1,1)\n")
rf.write("       sy2 <- c(0,sy2,1)\n")
rf.write("       pv <- ks.test(x1,x2)$p.value\n")
rf.write("       list(sx1,sy1,sx2,sy2,pv)\n")
rf.write("}\n")

rf.write("list1 <- x1[,"+c1+"]\n")
rf.write("list2 <- x2[,"+c2+"]\n")

rf.write("list1[list1 > 1e10] <- 1e10\n")
rf.write("list2[list2 > 1e10] <- 1e10\n")
rf.write("list1[list1 < -1e10] <- -1e10\n")
rf.write("list2[list2 < -1e10] <- -1e10\n")

rf.write("max(list1)\n")
rf.write("max(list2)\n")
rf.write("min(list1)\n")
rf.write("min(list2)\n")



if log == 'log':
    rf.write("list1 <- log2(list1) \n")
    rf.write("list2 <- log2(list2) \n")
rf.write("res <- mycdf(list1,list2)\n")

rf.write("pdf('"+output+"')\n")
rf.write("plot(res[[1]],res[[2]],type='l',lty=1,lwd=2,col='red',main=paste('"+title+"',format(res[[5]], digit=2,scientific = T),sep=' , p='),xlab='value',ylab='cumulative frequency')\n")
rf.write("lines(res[[3]],res[[4]],type='l',lty=2,lwd=2,col='blue')\n")
rf.write("legend('bottomright',c('"+label1+"','"+label2+"'),col=c('red','blue'), lty=1:2, lwd=2, bty='n')\n")
rf.write("dev.off()\n")

rf.close()
os.system("R --vanilla < tmp.r")    
os.system('rm tmp.r')