Category Archives: Photography

This little script automatically generates the gallery on this site from the local digikam(kde 3) database. To accomplish that task, it looks for files tagged public, and uploads them if they aren’t already uploaded. It completely rewrites the ngg database, so don’t use this if yo have put effort into creating a database with the ngg frontend.
Pictures are resized locally using imagemagick, so it avoids problems with low memory on some shared servers.

#!/usr/bin/python
"""
Script to export Photos from Digikam to NGG
Copyright (C) 2008  Andreas Goelzer

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.


This program exports pictures from your 
DigiKam (http://www.digikam.org/) database to a
NGG (http://alexrabe.boelinger.com/category/nextgengallery/) database.
It is at the moment highly experimental and in a works-for-me-right-now
state.
Be really really careful if trying to use it, it will
- determine which photos are tagged "public"
- upload them to a dir, kill everything in the target dir not tagged public
- rewrite the remote database
- automatically create thumbnails along the way
I don't know much about databases, so this code is quite inefficient. It
doesn't pose a big problem for my ~5k local, 100 remote photos, though

Once again, it *will* erase the remote directory, and possibly more. 
NO WARRANTY!
see http://andreas.goelzer.de/synchronizing-digikam-and-ngg for updates.
"""
import sqlite3;
import os;
import sys;
import re;

print "Calculating new remote DB"

con = sqlite3.connect("digikam3.db")
target = "www.domain.de@ssh.strato.de"
targetdir = "subdir"	
openmysql = "mysql -h rdbms -u username --password=pw database"

def mymask(obj):
	if type(obj) in (str, unicode):
		return "\'" + obj.replace('"', '\\"').replace("'", "\\'").replace("\n","\\n") + "\'"
	else:
		return repr(obj)
def myrepr(obj):
	str=""
	if type(obj) in (tuple, list):
		for elem in obj:
			str += mymask(elem) + ",";
		return "(" + str[:-1] + ")"
	else:
		return repr(obj)


def joinselect(con, query):
	return ",".join(list(myrepr(row) for row in con.execute(query)))
	
	
def remoteexec(cmd):
	os.system("ssh " + target + " \"" + cmd + "\"")

def copyremote(file,tsubdir):
	os.system("scp -p " + file + " " + target + ":" + re.escape(targetdir + tsubdir));

dbprefix = "wp_ngg_"
chooseidsstring = "(SELECT DISTINCT imageid FROM imagetags WHERE tagid = (SELECT id FROM tags WHERE name = \"public\"))"
sqlcommands  = "DELETE FROM " + dbprefix + "pic2tags;\n";
sqlcommands += "DELETE FROM " + dbprefix + "tags;\n";
sqlcommands += "DELETE FROM " + dbprefix + "pictures;\n";
sqlcommands += "DELETE FROM " + dbprefix + "gallery;\n";
sqlcommands += "DELETE FROM " + dbprefix + "album;\n";




sqlcommands += "INSERT INTO " + dbprefix + "pic2tags(picid,tagid) VALUES " + joinselect(con, "SELECT  imageid, tagid FROM imagetags  WHERE imageid IN  " + chooseidsstring) + ";\n"

sqlcommands += "INSERT INTO " + dbprefix + "tags(id, name, slug) VALUES " + joinselect(con, "SELECT  id,name,name FROM tags WHERE id IN (SELECT DISTINCT tagid FROM imagetags   WHERE imageid IN    " + chooseidsstring + ")") + ";\n"

sqlcommands += "INSERT INTO " + dbprefix + "pictures(pid, galleryid, filename, description) VALUES " + joinselect(con, "SELECT  id,dirid,name,caption FROM images   WHERE id IN "  + chooseidsstring ) + ";\n"


sqlcommands += "INSERT INTO " + dbprefix + "gallery(gid, name, path, title,previewpic) VALUES "


allalbums="";
j=0;
for row in con.execute("SELECT id,url,icon FROM albums WHERE id IN (SELECT DISTINCT dirid FROM images WHERE id IN " + chooseidsstring + ") ORDER BY url"):
	allalbums += "i:" + str(j) + ";i:" + str(row[0]) + ";"
	j += 1
	#if(row[2] == None): icon = "NULL"
	#check whether icon is public
	icon = str(row[2])
	if(row[2] == None or con.execute(chooseidsstring[1:-1] + " AND imageid = " + icon).fetchone() == None):
		nrow = con.execute("SELECT id FROM images WHERE id IN " + chooseidsstring + " AND dirid = " + str(row[0])).fetchone()
		icon=str(nrow[0]);
	sqlcommands += "(" + str(row[0]) + ", \"" + os.path.basename(row[1]) + "\" , \"photos" + row[1] + "\", \""+ os.path.basename(row[1]).replace("_"," ") + "\"," + icon + "),"	
	
sqlcommands = sqlcommands[:-1] + ";\n"
allalbums = "a:" + str(j) + ":{" + allalbums + "}"

sqlcommands += "INSERT INTO "+ dbprefix + "album(id, name, sortorder) VALUES (1, 'Main Gallery', '" + allalbums + "');\n"

#print s
f = open('remotedb.sql','w')
f.write(sqlcommands.encode('latin-1'))
f.close()

copyremote('remotedb.sql','')
remoteexec(openmysql + '<' + targetdir + '/' + 'remotedb.sql')

#exit()
			
print "creating remote directories"
#remotely create dirs
con2 = sqlite3.connect(":memory:")

con2.execute("CREATE TABLE remotedirs (file varchar(255), PRIMARY KEY (file))")
a = os.popen("ssh " + target + " find " + re.escape(targetdir) + " -type d").readlines();

for elem in a:
	if(elem != ''): con2.execute("INSERT INTO remotedirs VALUES (\"" + elem[len(targetdir):-1] + "\")");
con2.execute("CREATE TABLE localdirs (file varchar(255))")

for row in  con.execute("SELECT DISTINCT albums.url from images INNER JOIN albums ON images.dirid = albums.id WHERE images.id IN " + chooseidsstring):
	dirs=row[0].split("/")
	dire=""
	for dirss in dirs[1:]:
		dire += "/" + dirss
		con2.execute("INSERT INTO localdirs VALUES (\"" + dire + "\")");
	con2.execute("INSERT INTO localdirs VALUES (\"" + row[0]+"/thumbs\")");
#delete dirs
for row in con2.execute("SELECT file FROM remotedirs WHERE file NOT IN (SELECT DISTINCT file FROM localdirs) ORDER BY length(file) DESC"):
	print "deleting " + row[0]; 
	remoteexec("rmdir " + re.escape(targetdir + row[0]));

#create dirs
for row in con2.execute("SELECT file FROM localdirs WHERE file NOT IN (SELECT file FROM remotedirs)"):
	print "creating " + row[0]; 
	remoteexec("mkdir " + re.escape(targetdir + row[0]));



#handle files
a = os.popen("ssh " + target + " find " + re.escape(targetdir) + " -type f").readlines();
con2.execute("CREATE TABLE remote (file varchar(255), PRIMARY KEY (file))")
for elem in a:
	if(elem != ''): con2.execute("INSERT INTO remote VALUES (\"" + elem[len(targetdir):-1] + "\")");
con2.execute("CREATE TABLE local (file varchar(255), isthumb bool , PRIMARY KEY (file))")

for row in  con.execute("SELECT albums.url, images.name from images INNER JOIN albums ON images.dirid = albums.id WHERE images.id IN " + chooseidsstring):
	con2.execute("INSERT INTO local VALUES (\"" + row[0]+"/"+row[1] + "\", 0)");
	con2.execute("INSERT INTO local VALUES (\"" + row[0]+"/thumbs/thumbs_"+row[1] + "\", 1)");

print "Deleting leftover files"
#delete files no longer in the db
for row in con2.execute("SELECT file FROM remote WHERE file NOT IN (SELECT file FROM local)"):
	print "deleting " + row[0]; 
	remoteexec("rm " +  re.escape(targetdir + row[0]));

print "Uploading files"
#upload files
for row in con2.execute("SELECT file,isthumb FROM local WHERE file NOT IN (SELECT file FROM remote)"):
	if(row[1]):
		print "creating and uploading thumbnail: " + row[0]; 
		os.system("convert \"." + row[0].replace("thumbs/thumbs_","") + "\" -thumbnail 100x75 thumb.jpg")
		copyremote("thumb.jpg", re.escape(row[0]))
	else:
		print "resizing and uploading image:     " + row[0]; 
		os.system("convert \"." + row[0] + "\" -resize \"1024x768>\" small.jpg")
		copyremote("small.jpg", re.escape(row[0]))

uploader.py