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import os
import re
import time
import subprocess
from soc.settings import PROJECT_DIR
def scilab_run(code, token, example_id):
#Check for system commands
system_commands = re.compile(
'unix\(.*\)|unix_g\(.*\)|unix_w\(.*\)|unix_x\(.*\)|unix_s\(.*\)'
)
if system_commands.search(code):
return "System Commands not allowed"
#Remove all clear;
code = re.sub(r'clear.*all|clear|clc\(\)|clc', '', code)
plot_exists = False
#Finding the plot and appending xs2jpg function
p = re.compile(r'.*plot.*\(.*,.*,*\).*\n')
plot_path = ''
if p.search(code):
plot_exists = True
code = code + '\n'
current_time = time.time()
plot_path = PROJECT_DIR + '/static/tmp/{0}.jpg'.format(str(current_time))
code += 'xs2jpg(gcf(), "{0}");\n'.format(plot_path)
#Check whether to load scimax / maxima
if 'syms' in code or 'Syms' in code:
code = code.replace('syms', 'Syms')
code = 'exec(\'/home/cheese/scimax/loader.sce\');\nmaxinit\n' + code
file_path = PROJECT_DIR + '/static/tmp/' + token + '.sci'
#thanks @prathamesh920 github
#traps even syntax errors eg: endfunton
f = open(file_path, "w")
f.write('mode(2);\n')
f.write(unicode(code))
f.write('\nquit();')
f.close()
#this makes it possible to execute scilab without the problem of \
#getting stuck in the prompt in case of error
cmd = 'printf "lines(0)\nexec(\'{0}\',2);\nquit();"'.format(file_path)
cmd += ' | /home/cheese/scilab-5.4.1/bin/scilab-adv-cli -nw'
output = subprocess.Popen(
cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True
).communicate()[0]
#os.remove(file_path)
output = trim(output)
data = {
'output': output,
'plot_path': plot_path.replace(PROJECT_DIR, '')
}
return data
def trim(output):
#for future use
output = re.sub(r'\n \n \n', '\n', output)
return output
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