looqs/addindex

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2018-01-03 09:40:13 +01:00
#!/usr/bin/python3
import sqlite3
import os.path
import sys
import subprocess
import zipfile
import xml.etree.ElementTree
import re
import chardet
import config
dbcon = sqlite3.connect(config.DBPATH, isolation_level=None)
class pagedata:
page = 0
content = ""
def singlepagelist(content):
result = pagedata()
result.content = content
result.page = 0
l = list();
l.append(result)
return l
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def striptags(content):
result = ""
try:
result = ''.join(xml.etree.ElementTree.fromstring(content).itertext())
except:
#TODO: test<br>test2 will make it testtest2 not test test2
result = re.sub('<[^>]*>', '', content)
return result
def strip_irrelevant(content):
result = content.replace("\n", " ").replace("\t", " ").replace("\f", "")
result = re.sub(' +', ' ', result)
return result;
def process_pdf(path):
args=["pdftotext", path , "-"]
stdout,stderr = subprocess.Popen(args,stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
result = strip_irrelevant(stdout.decode('utf-8'))
return singlepagelist(result)
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def process_odt(path):
fd = zipfile.ZipFile(path)
content = fd.read("content.xml").decode("utf-8")
fd.close()
return singlepagelist(striptags(content))
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def process_striptags(path):
content = process_text(path)
return singlepagelist(striptags(content))
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def process_text(path):
fd = open(path, "rb")
content = fd.read()
fd.close()
result=""
try:
result = str(content.decode("utf-8"))
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except:
try:
encoding = chardet.detect(content)["encoding"];
if encoding == None:
result = ""
else:
result = str(content.decode(encoding))
except:
print("FAILE DECODING: " + path)
result = ""
return singlepagelist(result)
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def process_nothing(path):
return list()
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def exists(abspath, mtime):
cursor = dbcon.cursor()
cursor.execute("SELECT 1 FROM file WHERE path = ? AND mtime = ?" , (abspath, mtime))
result = cursor.fetchone()
if result != None and result[0] == 1:
return True
return False
def insert(path, cursor):
print("processing", path)
abspath=os.path.abspath(path)
mtime = int(os.stat(abspath).st_mtime)
if exists(abspath, mtime):
print("Leaving alone " + abspath + " because it wasn't changed")
return
basename=os.path.basename(abspath)
ext = os.path.splitext(abspath)[1]
content=""
processor=process_nothing
if ext in preprocess:
processor=preprocess[ext]
pagedatalist = processor(abspath)
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cursor.execute("BEGIN TRANSACTION")
cursor.execute("DELETE FROM file WHERE path = ?", (abspath,))
cursor.execute("INSERT INTO file(path, mtime) VALUES(?, ?) ", (abspath, mtime))
fileid=cursor.lastrowid
for pagedata in pagedatalist:
cursor.execute("INSERT INTO content(fileid, page, content) VALUES(?, ?, ?)", (fileid, pagedata.page, pagedata.content))
cursor.execute("COMMIT TRANSACTION")
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preprocess={".pdf":process_pdf, ".odt":process_odt, ".html":process_striptags, ".xml":process_nothing, ".txt":process_text,
".sql":process_text, ".c":process_text, ".cpp":process_text, ".js":process_text, ".java":process_text,
".py":process_text, '.md':process_text}
cursor = dbcon.cursor()
if len(sys.argv) < 2:
for line in sys.stdin:
insert(line.replace("\n", ""), cursor)
else:
for inputfile in sys.argv[1:]:
insert(inputfile, cursor)
dbcon.close()