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-rwxr-xr-xwebmap-import114
1 files changed, 11 insertions, 103 deletions
diff --git a/webmap-import b/webmap-import
index bfee9dc..74b6ed5 100755
--- a/webmap-import
+++ b/webmap-import
@@ -38,7 +38,6 @@ from osgeo.gdalconst import (
OF_VERBOSE_ERROR as GDAL_OF_VERBOSE_ERROR,
CE_None as GDAL_CE_None,
DCAP_CREATE as GDAL_DCAP_CREATE,
- DCAP_VECTOR as GDAL_DCAP_VECTOR,
DCAP_DEFAULT_FIELDS as GDAL_DCAP_DEFAULT_FIELDS,
DCAP_NOTNULL_FIELDS as GDAL_DCAP_NOTNULL_FIELDS,
DCAP_UNIQUE_FIELDS as GDAL_DCAP_UNIQUE_FIELDS,
@@ -47,40 +46,13 @@ import osgeo.gdalconst as gdalconst
gdal.UseExceptions()
import common
-
-# Wrapper around gdal.MajorObject.GetMetadataItem(name)
-def getMetadataItem(o, k):
- v = o.GetMetadataItem(k)
- if v is not None and isinstance(v, str):
- return v.upper() == 'YES'
- else:
- return False
-
-# Return kwargs and driver for OpenEx()
-def setOpenExArgs(option_dict, flags=0):
- kwargs = { 'nOpenFlags': GDAL_OF_VECTOR | flags }
-
- fmt = option_dict.get('format', None)
- if fmt is None:
- drv = None
- else:
- drv = gdal.GetDriverByName(fmt)
- if drv is None:
- raise Exception(f'Unknown driver name "{fmt}"')
- elif not getMetadataItem(drv, GDAL_DCAP_VECTOR):
- raise Exception(f'Driver "{drv.ShortName}" has no vector capabilities')
- kwargs['allowed_drivers'] = [ drv.ShortName ]
-
- oo = option_dict.get('open-options', None)
- if oo is not None:
- kwargs['open_options'] = [ k + '=' + str(v) for k, v in oo.items() ]
- return kwargs, drv
+from common import gdalSetOpenExArgs, gdalGetMetadataItem, gdalVersionMin, escapeIdentifier
# Open and return the output DS. It is created if create=False or
# create-options is a non-empty dictionary.
def openOutputDS(def_dict):
path = def_dict['path']
- kwargs, drv = setOpenExArgs(def_dict, flags=GDAL_OF_UPDATE|GDAL_OF_VERBOSE_ERROR)
+ kwargs, drv = gdalSetOpenExArgs(def_dict, flags=GDAL_OF_UPDATE|GDAL_OF_VERBOSE_ERROR)
try:
logging.debug('OpenEx(%s, %s)', path, str(kwargs))
return gdal.OpenEx(path, **kwargs)
@@ -111,7 +83,7 @@ def openOutputDS(def_dict):
if not def_dict.get('create', False) and dsco is None:
# not configured for creation
raise e
- if drv is None or not getMetadataItem(drv, GDAL_DCAP_CREATE):
+ if drv is None or not gdalGetMetadataItem(drv, GDAL_DCAP_CREATE):
# not capable of creation
raise e
@@ -349,13 +321,13 @@ def setFieldIf(cond, attrName, val, data, fldName, drvName, log=logging.warning)
# constraints.)
def validateSchema(layers, drvo=None, lco_defaults=None):
# Cf. https://github.com/OSGeo/gdal/blob/master/NEWS.md
- if common.gdal_version_min(maj=3, min=7):
+ if gdalVersionMin(maj=3, min=7):
# list of capability flags supported by the CreateField() API
drvoFieldDefnFlags = drvo.GetMetadataItem(gdalconst.DMD_CREATION_FIELD_DEFN_FLAGS)
drvoFieldDefnFlags = drvoFieldDefnFlags.split(' ') if drvoFieldDefnFlags is not None else []
drvoSupportsFieldComment = 'Comment' in drvoFieldDefnFlags
# GetTZFlag()/SetTZFlag() and OGR_TZFLAG_* constants added in 3.8.0
- hasTZFlagSupport = common.gdal_version_min(maj=3, min=8)
+ hasTZFlagSupport = gdalVersionMin(maj=3, min=8)
else:
# list of flags supported by the OGRLayer::AlterFieldDefn() API
drvoFieldDefnFlags = drvo.GetMetadataItem(gdalconst.DMD_ALTER_FIELD_DEFN_FLAGS)
@@ -366,9 +338,9 @@ def validateSchema(layers, drvo=None, lco_defaults=None):
# cache driver capabilities
drvoSupportsFieldWidthPrecision = 'WidthPrecision' in drvoFieldDefnFlags
- drvoSupportsFieldNullable = 'Nullable' in drvoFieldDefnFlags and getMetadataItem(drvo, GDAL_DCAP_NOTNULL_FIELDS)
- drvoSupportsFieldUnique = 'Unique' in drvoFieldDefnFlags and getMetadataItem(drvo, GDAL_DCAP_UNIQUE_FIELDS)
- drvoSupportsFieldDefault = 'Default' in drvoFieldDefnFlags and getMetadataItem(drvo, GDAL_DCAP_DEFAULT_FIELDS)
+ drvoSupportsFieldNullable = 'Nullable' in drvoFieldDefnFlags and gdalGetMetadataItem(drvo, GDAL_DCAP_NOTNULL_FIELDS)
+ drvoSupportsFieldUnique = 'Unique' in drvoFieldDefnFlags and gdalGetMetadataItem(drvo, GDAL_DCAP_UNIQUE_FIELDS)
+ drvoSupportsFieldDefault = 'Default' in drvoFieldDefnFlags and gdalGetMetadataItem(drvo, GDAL_DCAP_DEFAULT_FIELDS)
drvoSupportsFieldAlternativeName = 'AlternativeName' in drvoFieldDefnFlags
for layername, layerdef in layers.items():
@@ -450,62 +422,6 @@ def validateSchema(layers, drvo=None, lco_defaults=None):
fields[idx] = fld_def2
-# Return the decoded Spatial Reference System
-def getSRS(srs_str):
- if srs_str is None:
- return
- srs = osr.SpatialReference()
- if srs_str.startswith('EPSG:'):
- code = int(srs_str.removeprefix('EPSG:'))
- srs.ImportFromEPSG(code)
- else:
- raise Exception(f'Unknown SRS {srs_str}')
- logging.debug('Default SRS: "%s" (%s)', srs.ExportToProj4(), srs.GetName())
- return srs
-
-# Convert extent [minX, minY, maxX, maxY] into a polygon and assign the
-# given SRS. Like apps/ogr2ogr_lib.cpp, we segmentize the polygon to
-# make sure it is sufficiently densified when transforming to source
-# layer SRS for spatial filtering.
-def getExtent(extent, srs=None):
- if extent is None:
- return
-
- if not (isinstance(extent, list) or isinstance(extent, tuple)) or len(extent) != 4:
- raise Exception(f'Invalid extent {extent}')
- elif srs is None:
- raise Exception('Configured extent but no SRS')
-
- logging.debug('Configured extent in %s: %s',
- srs.GetName(), ', '.join(map(str, extent)))
-
- ring = ogr.Geometry(ogr.wkbLinearRing)
- ring.AddPoint_2D(extent[0], extent[1])
- ring.AddPoint_2D(extent[2], extent[1])
- ring.AddPoint_2D(extent[2], extent[3])
- ring.AddPoint_2D(extent[0], extent[3])
- ring.AddPoint_2D(extent[0], extent[1])
-
- polygon = ogr.Geometry(ogr.wkbPolygon)
- polygon.AddGeometry(ring)
-
- # we expressed extent as minX, minY, maxX, maxY (easting/northing
- # ordered, i.e., in traditional GIS order)
- srs2 = srs.Clone()
- srs2.SetAxisMappingStrategy(osr.OAMS_TRADITIONAL_GIS_ORDER)
- polygon.AssignSpatialReference(srs2)
- polygon.TransformTo(srs)
-
- segment_distance_metre = 10 * 1000
- if srs.IsGeographic():
- dfMaxLength = segment_distance_metre / math.radians(srs.GetSemiMajor())
- polygon.Segmentize(dfMaxLength)
- elif srs.IsProjected():
- dfMaxLength = segment_distance_metre / srs.GetLinearUnits()
- polygon.Segmentize(dfMaxLength)
-
- return polygon
-
# Validate the output layer against the provided SRS and creation options
def validateOutputLayer(lyr, srs=None, options=None):
ok = True
@@ -799,14 +715,6 @@ def setOutputFieldMap(defn, sources):
rule['replace'] = re.compile(rule['replace'])
rules[idx] = ( rule['replace'], rule['with'] )
-# Escape the given identifier, cf.
-# swig/python/gdal-utils/osgeo_utils/samples/validate_gpkg.py:_esc_id()
-def escapeIdentifier(identifier):
- if '\x00' in identifier:
- raise Exception(f'Invalid identifier "{identifier}"')
- # SQL:1999 delimited identifier
- return '"' + identifier.replace('"', '""') + '"'
-
# Clear the given layer (wipe all its features)
def clearLayer(ds, lyr):
n = -1
@@ -938,7 +846,7 @@ def setFieldMapValue(fld, idx, val):
# while we want a single transaction for the entire desination layer,
# including truncation, source imports, and metadata changes.
def importSource2(lyr_dst, path, args={}, basedir=None, extent=None):
- kwargs, _ = setOpenExArgs(args, flags=GDAL_OF_READONLY|GDAL_OF_VERBOSE_ERROR)
+ kwargs, _ = gdalSetOpenExArgs(args, flags=GDAL_OF_READONLY|GDAL_OF_VERBOSE_ERROR)
path2 = path if basedir is None else str(basedir.joinpath(path))
logging.debug('OpenEx(%s, %s)', path2, str(kwargs))
@@ -1245,8 +1153,8 @@ if __name__ == '__main__':
lco_defaults=common.config['dataset'].get('create-layer-options', None))
# get configured Spatial Reference System and extent
- srs = getSRS(common.config.get('SRS', None))
- extent = getExtent(common.config.get('extent', None), srs=srs)
+ srs = common.getSRS(common.config.get('SRS', None))
+ extent = common.getExtent(common.config.get('extent', None), srs=srs)[0]
if args.lockfile is not None:
# obtain an exclusive lock and don't release it until exiting the program
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 01:54:00 +0000