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212 lines
7.4 KiB
Python
Executable file
212 lines
7.4 KiB
Python
Executable file
#!/usr/bin/env python
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# Scan the osm-vector-maps directory, update the osm-vector-maps-idx.json, add menu-defs
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from geojson import Feature, Point, FeatureCollection, Polygon
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import geojson
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import json
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import os
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import sys
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import fnmatch
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import re
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from datetime import date
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IIAB_PATH='/etc/iiab'
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if not IIAB_PATH in sys.path:
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sys.path.append(IIAB_PATH)
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from iiab_env import get_iiab_env
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SCRIPT_DIR = '/opt/admin/cmdsrv/scripts'
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if not SCRIPT_DIR in sys.path:
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sys.path.append(SCRIPT_DIR)
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if os.path.exists(os.path.join(SCRIPT_DIR,'iiab_update_menus.py')):
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import iiab_update_menus as menus
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console_installed = True
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else:
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console_installed = False
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doc_root = get_iiab_env('WWWROOT')
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menuDefs = doc_root + "/js-menu/menu-files/menu-defs/"
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vector_map_idx_dir = doc_root + "/common/assets"
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#map_doc_root = '{{ vector_map_path }}'
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map_doc_root = '/library/www/osm-vector-maps'
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# map_catalog will be global, assumed always available
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map_catalog = {}
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map_menu_def_list = []
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previous_idx = {} # track new regions so we don't thrash on adding to menu
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def main():
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global map_menu_def_list
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global previous_idx
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get_map_catalog()
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#print(json.dumps(map_catalog,indent=2))
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map_menu_def_list = get_menu_def_names()
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print(json.dumps(map_menu_def_list,indent=2))
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read_vector_map_idx()
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installed_maps = get_installed_regions()
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print(installed_maps)
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write_vector_map_idx(installed_maps)
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# For installed regions, check that a menu def exists, and it's on home page
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for fname in installed_maps:
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region = extract_region_from_filename(fname)
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if region == 'maplist': # it is the splash page, display only if no others
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menu_ref = 'en-map_test'
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item = { "perma_ref" : "en-map_test" }
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if len(installed_maps) == 1:
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menus.update_menu_json(menu_ref)
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return
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elif region not in map_catalog['regions']:
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print "Skipping unknown map " + fname
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continue
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else:
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item = map_catalog['regions'][region]
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menu_ref = item['perma_ref']
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if not (menu_ref in map_menu_def_list):
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print('creating menu def for %s'%item['perma_ref'])
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create_menu_def(region,item['perma_ref'] + '.json')
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# if autoupdate allowed and this is a new region then add to home menu
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if fetch_menu_json_value('autoupdate_menu') and item['perma_ref'] not in previous_idx:
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print('autoudate of menu items is enabled:%s. Adding %s'%(\
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fetch_menu_json_value('autoupdate_menu'),region,))
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menus.update_menu_json(menu_ref)
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# redirect from box/maps to an installed map rather than test page
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with open('{{ vector_map_path }}/index.html','w') as fp:
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outstr = """<head> \n<meta http-equiv="refresh" content="0; URL=/osm-vector-maps/en-osm-omt_%s " />\n</head>"""%fname
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fp.write(outstr)
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def get_map_catalog():
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global map_catalog
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input_json = map_doc_root + '/maplist/assets/regions.json'
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with open(input_json,'r') as regions:
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reg_str = regions.read()
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map_catalog = json.loads(reg_str)
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#print(json.dumps(map_catalog,indent=2))
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def get_menu_def_names(intended_use='map'):
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menu_def_list =[]
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os.chdir(menuDefs)
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for filename in os.listdir('.'):
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if fnmatch.fnmatch(filename, '*.json'):
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try:
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with open(filename,'r') as json_file:
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readstr = json_file.read()
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data = json.loads(readstr)
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except:
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print("failed to parse %s"%filename)
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print(readstr)
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if data.get('intended_use','') != intended_use:
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continue
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map_name = data.get('map_name','')
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if map_name != '':
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menu_def_list.append(map_name)
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return menu_def_list
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def get_installed_regions():
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installed = []
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os.chdir(map_doc_root)
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for filename in os.listdir('.'):
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if fnmatch.fnmatch(filename, '??-osm-omt*'):
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region = re.sub(r'^..-osm-..._(.*)',r'\1',filename)
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installed.append(region)
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# add the splash page if no other maps are present
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if len(installed) == 0:
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installed.append('maplist')
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return installed
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def read_vector_map_idx():
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global previous_idx
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try: # will fail first time
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with open(vector_map_idx_dir + '/vector-map-idx.json','r') as idx:
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str = idx.read()
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previous_idx = json.loads(str)
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except:
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pass
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def write_vector_map_idx(installed_maps):
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map_dict ={}
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idx_dict = {}
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for fname in installed_maps:
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region = extract_region_from_filename(fname)
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if map == 'maplist': continue # not a real region
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map_dict = map_catalog['regions'].get(region,'')
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if map_dict == '': continue
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# Create the idx file in format required bo js-menu system
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item = map_dict['perma_ref']
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idx_dict[item] = {}
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idx_dict[item]['file_name'] = os.path.basename(map_dict['url'][:-4])
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idx_dict[item]['menu_item'] = map_dict['perma_ref']
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idx_dict[item]['size'] = map_dict['size']
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idx_dict[item]['date'] = map_dict['date']
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idx_dict[item]['region'] = region
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idx_dict[item]['language'] = map_dict['perma_ref'][:2]
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with open(vector_map_idx_dir + '/vector-map-idx.json','w') as idx:
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idx.write(json.dumps(idx_dict,indent=2))
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def create_menu_def(region,default_name,intended_use='map'):
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item = map_catalog['regions'][region]
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if len(item.get('language','')) > 2:
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lang = item['language'][:2]
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else: # default to english
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lang = 'en'
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filename = lang + '-' + item['perma_ref'] + '.json'
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# create a stub for this zim
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menuDef = {}
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default_logo = 'osm.jpg'
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menuDef["intended_use"] = "map"
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menuDef["lang"] = lang
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menuDef["logo_url"] = default_logo
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menuitem = lang + '-' + item['perma_ref']
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menuDef["menu_item_name"] = default_name
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menuDef["title"] = "OpenStreetMap: 18 Levels of Zoom for <b> " + item.get('title','ERROR') + '</b>'
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menuDef["map_name"] = item['perma_ref']
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# the following is in the idx json
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#menuDef["file_name"] = lang + '-osm-omt_' + region + '_' + os.path.basename(item['url'])[:-4]
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menuDef["description"] = '<p>Resolution of the Whole World to 5 KM. OpenStreetMap data for <b>' + item.get('title','') + '</b> with details down to 5 Meters</p>'
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menuDef["extra_html"] = ""
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#menuDef["automatically_generated"] = "true"
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menuDef["change_ref"] = "generated"
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menuDef["change_date"] = str(date.today())
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if not os.path.isfile(menuDefs + default_name): # logic to here can still overwrite existing menu def
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print("creating %s"%menuDefs + default_name)
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with open(menuDefs + default_name,'w') as menufile:
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menufile.write(json.dumps(menuDef,indent=2))
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return default_name[:-5]
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def human_readable(num):
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# return 3 significant digits and unit specifier
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num = float(num)
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units = [ '','K','M','G']
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for i in range(4):
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if num<10.0:
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return "%.2f%s"%(num,units[i])
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if num<100.0:
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return "%.1f%s"%(num,units[i])
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if num < 1000.0:
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return "%.0f%s"%(num,units[i])
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num /= 1000.0
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def fetch_menu_json_value(key):
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with open( doc_root + '/home/menu.json','r') as menudef:
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data = json.loads(menudef.read())
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return data.get(key,'')
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def extract_region_from_filename(fname):
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# find the index of the date
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nibble = re.search(r"\d{4}-\d{2}-\d{2}",fname)
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if nibble:
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fname = fname[:nibble.start()-1]
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return fname
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else:
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return("maplist")
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if __name__ == '__main__':
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if console_installed:
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main()
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