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from osgeo import gdal, ogr, osr
import glob
import os
import json
import subprocess
cdn_url = 'https://cdn.proj.org'
agency_list = json.loads(open('agency.json','rt').read())
agencies = {}
for item in agency_list:
agencies[item['id']] = item
area_list = json.loads(open('area.json','rt').read())
area_dict = {}
for item in area_list:
area_dict[item['code']] = item
files_list = json.loads(open('files.json','rt').read())
files_dict = {}
for item in files_list:
files_dict[item['name']] = item
dirnames = []
links = []
for dirname in glob.glob('*'):
if not os.path.isdir(dirname):
continue
dirnames.append(dirname)
gj_ds = ogr.GetDriverByName('GeoJSON').CreateDataSource('files.geojson')
sr = osr.SpatialReference()
sr.SetAxisMappingStrategy(osr.OAMS_TRADITIONAL_GIS_ORDER)
sr.ImportFromEPSG(4326)
lyr = gj_ds.CreateLayer('files', srs = sr, options = ['RFC7946=YES'])
lyr.CreateField(ogr.FieldDefn('url', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('name', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('area_of_use', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('type', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('source_crs_code', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('source_crs_name', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('target_crs_code', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('target_crs_name', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('source', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('source_country', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('source_id', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('source_url', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('description', ogr.OFTString))
lyr.CreateField(ogr.FieldDefn('full_bbox', ogr.OFTRealList))
total_size = 0
set_files = set()
for dirname in sorted(dirnames):
if '_' not in dirname:
continue
filenames = []
readme_filename = None
for f in glob.glob(dirname + '/*'):
f = os.path.basename(f)
if f.startswith('README'):
assert not readme_filename
readme_filename = f
else:
filenames.append(f)
title = '%s' % (dirname)
try:
agency = agencies[dirname]
title = '<a href="%s">%s</a>' % (agency['url'].replace('&', "&"), agency['agency'])
except KeyError:
pass
links.append('</ul><hr><h3>%s</h3><ul>' % title )
for f in [readme_filename] + sorted(filenames):
assert f not in set_files
set_files.add(f)
full_filename = os.path.join(dirname, f)
ds = gdal.OpenEx(full_filename)
desc = ''
area_of_use = ''
if ds:
imageDesc = ds.GetMetadataItem('TIFFTAG_IMAGEDESCRIPTION')
if imageDesc:
pos = imageDesc.find('. Converted from')
if pos >= 0:
imageDesc = imageDesc[0:pos]
desc = imageDesc
feat = ogr.Feature(lyr.GetLayerDefn())
feat['url'] = cdn_url + '/' + f
feat['name'] = f
type = ds.GetMetadataItem('TYPE')
if type:
feat['type'] = type
area_of_use = ds.GetMetadataItem('area_of_use')
if area_of_use:
feat['area_of_use'] = area_of_use
feat['source'] = agency['agency']
feat['source_country'] = agency['country']
feat['source_id'] = agency['id']
feat['source_url'] = agency['url']
if imageDesc:
feat['description'] = imageDesc
gt = ds.GetGeoTransform()
xmin = gt[0] + 0.5 * gt[1]
ymax = gt[3] + 0.5 * gt[5]
xmax = xmin + gt[1] * (ds.RasterXSize - 1)
ymin = ymax + gt[5] * (ds.RasterYSize - 1)
source_crs_epsg_code = ds.GetMetadataItem('source_crs_epsg_code')
source_crs_wkt = ds.GetMetadataItem('source_crs_wkt')
if source_crs_epsg_code:
sr = osr.SpatialReference()
assert sr.ImportFromEPSG(int(source_crs_epsg_code)) == 0
feat['source_crs_code'] = 'EPSG:' + source_crs_epsg_code
feat['source_crs_name'] = sr.GetName()
elif source_crs_wkt:
sr = osr.SpatialReference()
assert sr.SetFromUserInput(source_crs_wkt) == 0
feat['source_crs_name'] = sr.GetName()
else:
sr = ds.GetSpatialRef()
assert sr
if sr.GetAuthorityName(None) == 'EPSG':
feat['source_crs_code'] = 'EPSG:' + sr.GetAuthorityCode(None)
feat['source_crs_name'] = sr.GetName()
target_crs_epsg_code = ds.GetMetadataItem('target_crs_epsg_code')
target_crs_wkt = ds.GetMetadataItem('target_crs_wkt')
if target_crs_epsg_code:
sr = osr.SpatialReference()
assert sr.ImportFromEPSG(int(target_crs_epsg_code)) == 0
feat['target_crs_code'] = 'EPSG:' + target_crs_epsg_code
feat['target_crs_name'] = sr.GetName()
elif target_crs_wkt:
sr = osr.SpatialReference()
assert sr.SetFromUserInput(target_crs_wkt) == 0
feat['target_crs_name'] = sr.GetName()
elif ds.GetMetadataItem('TYPE') != 'VELOCITY':
assert False
def normalize_lon(xmin, xmax):
if xmin > 180:
xmin -= 360
xmax -= 360
elif xmax < -180:
xmin += 360
xmax += 360
return xmin, xmax
xmin, xmax = normalize_lon(xmin, xmax)
def polygon_from_bbox(xmin, ymin, xmax, ymax):
geom = ogr.Geometry(ogr.wkbPolygon)
ring = ogr.Geometry(ogr.wkbLinearRing)
# Add small epsilon to help unioning polygons touching by edge
eps = 1e-12
ring.AddPoint_2D(xmin-eps, ymin-eps)
ring.AddPoint_2D(xmin-eps, ymax+eps)
ring.AddPoint_2D(xmax+eps, ymax+eps)
ring.AddPoint_2D(xmax+eps, ymin+eps)
ring.AddPoint_2D(xmin-eps, ymin-eps)
geom.AddGeometry(ring)
return geom
subds_list = ds.GetSubDatasets()
if subds_list:
geom = None
for subds_name, _ in subds_list:
ds = gdal.Open(subds_name)
gt = ds.GetGeoTransform()
xmin_subds = gt[0] + 0.5 * gt[1]
ymax_subds = gt[3] + 0.5 * gt[5]
xmax_subds = xmin_subds + gt[1] * (ds.RasterXSize - 1)
ymin_subds = ymax_subds + gt[5] * (ds.RasterYSize - 1)
xmin_subds, xmax_subds = normalize_lon(xmin_subds, xmax_subds)
xmin = min(xmin, xmin_subds)
ymin = min(ymin, ymin_subds)
xmax = max(xmax, xmax_subds)
ymax = max(ymax, ymax_subds)
if geom:
geom = geom.Union(polygon_from_bbox(xmin_subds, ymin_subds, xmax_subds, ymax_subds))
else:
geom = polygon_from_bbox(xmin_subds, ymin_subds, xmax_subds, ymax_subds)
else:
geom = polygon_from_bbox(xmin, ymin, xmax, ymax)
# Enforce stricter EPSG based bbox limitation for a few files
if f in files_dict:
bbox_xmin, bbox_ymin, bbox_xmax, bbox_ymax = area_dict[files_dict[f]['area_code']]['bbox']
assert xmin < bbox_xmax
assert ymin < bbox_ymax
assert xmax > bbox_xmin
assert ymax > bbox_ymin
feat['full_bbox'] = [xmin, ymin, xmax, ymax]
geom = geom.Intersection(polygon_from_bbox(bbox_xmin, bbox_ymin, bbox_xmax, bbox_ymax))
feat.SetGeometry(geom)
lyr.CreateFeature(feat)
size_str = ''
size = os.stat(full_filename).st_size
total_size += size
if size > 1024 * 1024:
size_str = '. Size: %.1f MB' % (size / (1024. * 1024))
if f.startswith('README'):
last_modified = ''
else:
p = subprocess.run(['git','status','--porcelain',full_filename], check=True, stdout=subprocess.PIPE)
assert not p.stdout, (p.stdout, f)
p = subprocess.run(['git','log','-1','--pretty=format:%cd','--date=short',full_filename], check=True, stdout=subprocess.PIPE)
last_modified = '. Last modified: ' + p.stdout.decode('ascii')
if area_of_use:
area_of_use = ' - ' + area_of_use
else:
area_of_use = ''
if desc:
desc = ' - ' + desc
else:
desc = ''
links.append('<li><a href="%s">%s</a>%s%s%s%s</li>' % (f, f, area_of_use, desc, size_str, last_modified))
total_size_str = '%d MB' % (total_size // (1024 * 1024))
content = '<!-- This is a generated file by regenerate_index_html.py. Do not modify !!!! Modify index.html.in instead if you need to make changes-->\n\n'
content += open('index.html.in', 'rt').read().replace('${LINKS_WILL_BE_ADDED_HERE_BY_REGENERATE_INDEX_HTML}', '\n'.join(links)).replace('${TOTAL_SIZE}', total_size_str)
open('index.html', 'wt').write(content)
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