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import os
import sys
import csv
import re
import os.path as osp
from lg import Lg
import lg2txt
from settings import LABELS_TRANS_CSV, MATHML_MAP_DIR, CROHMELIB_SRC_DIR, \
CROHMELIB_GRAMMAR_DIR, MATHML_TXL_FILE
def readMapFile(mapFile):
"""Read in symbol and structure mappings from a file."""
try:
fileReader = csv.reader(open(mapFile))
except:
sys.stderr.write(' !! IO Error (cannot open): ' + mapFile + '\n')
return
symbolsMap = {}
relationsMap = {}
readingSymbols = True
for row in fileReader:
# Skip blank lines and comments.
if len(row) == 0:
continue
elif row[0].strip()[0] == '#':
continue
elif row[0].strip() == 'SYMBOLS':
readingSymbols = True
elif row[0].strip() == 'RELATIONSHIPS':
readingSymbols = False
else:
if readingSymbols:
symbolsMap[row[0]] = row[1]
else:
relationsMap[row[0]] = row[1]
return symbolsMap, relationsMap
def get_mml(filename, translate=True):
temp_lg = osp.join(osp.split(filename)[0], "temp_" + osp.split(filename)[1] )
temp_mml = temp_lg[:-3] + ".mml"
inputFile = Lg(filename)
lg_NE_string = inputFile.csv()
if translate:
symbolsMap, relationsMap = readMapFile(LABELS_TRANS_CSV)
edge_pattern = re.compile(r'^E,')
node_pattern = re.compile(r'(^N,)|#')
symbol_temp = relabel(lg_NE_string, symbolsMap, node_pattern)
edge_temp = relabel(lg_NE_string, dict(**symbolsMap, **relationsMap),
edge_pattern)
lg_NE_string = symbol_temp + "\n" + edge_temp
print("\n" + temp_lg)
with open(temp_lg, 'w') as f:
f.writelines(lg_NE_string)
try:
mml_out_temp = lg2txt.main(temp_lg, MATHML_MAP_DIR)
except:
mml_out_temp = ""
mml_out = ""
if mml_out_temp:
with open(temp_mml, 'w') as f:
f.writelines(mml_out_temp)
mml_out = os.popen("txl -I " + CROHMELIB_SRC_DIR + " -I " +
CROHMELIB_GRAMMAR_DIR + " " + temp_mml + " " +
MATHML_TXL_FILE).read()
if not mml_out:
mml_out = mml_out_temp
return mml_out
def relabel(lg_NE_string, Map, pattern):
temp = '\n'.join([line for line in lg_NE_string.split('\n')
if re.match(pattern, line)])
for source_label, mapped_label in Map.items():
temp = temp.replace("," + source_label + ",", "," + mapped_label + ",")
return temp
if __name__ == "__main__":
filename = sys.argv[1]
get_mml(filename)