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Runtime error
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#
# Copyright (c) 2019-2024 Leland Brown.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
#
try:
from debug_logging import debug_log as _debug_log
from debug_logging import debug_exception as _debug_exception
except Exception:
def _debug_log(severity, message): pass
def _debug_exception(severity, message): pass
# import GDAL modules
import osgeo.gdal as gdal
import osgeo.osr as osr
import os.path
import subprocess
import sys
class GdalDataError(RuntimeError):
pass
def _init_gdal_data():
# set GDAL_DATA config value needed to evaluate EPSG codes, etc.
# setup_gdal_data() must be called before calling ExportToPCI() on
# an uninitialized osr.SpatialReference, or else later calls to
# TransformPoint() will give weird errors even on unrelated objects
if gdal.GetConfigOption("GDAL_DATA"):
return
_debug_log(1, "GDAL_DATA config option not pre-set.")
gdal_data_path = None
#try:
# # try running "gdal-config --datadir" to get gdal data path
# gdal_config = os.path.join(sys.prefix, "bin", "gdal-config")
# proc = subprocess.Popen(
# [gdal_config, "--datadir"],
# stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
# out = proc.communicate()[0]
# if not proc.returncode:
# # use returned value
# gdal_data_path = out.decode(sys.getdefaultencoding()).rstrip()
# else:
# debug_log(2, "Return code " + str(proc.returnCode) + " from gdal-config.")
#except Exception:
# debug_exception(1, "Exception running gdal-config.")
try:
# try running "gdal-config --datadir" to get gdal data path
gdal_config = os.path.join(sys.prefix, "bin", "gdal-config")
out = subprocess.check_output(
[gdal_config, "--datadir"],
stderr=subprocess.DEVNULL
)
gdal_data_path = out.decode(sys.getdefaultencoding()).rstrip()
except subprocess.CalledProcessError as e:
_debug_log(
2, "Return code " + str(e.returncode) + " from gdal-config.")
except Exception:
_debug_exception(1, "Exception running gdal-config.")
if not gdal_data_path:
# otherwise guess location and look for file "epsg.wkt"
base_paths = []
base_paths.append(sys.prefix)
base_paths.append(os.path.join(sys.prefix, "Library"))
base_paths.append("/usr/local")
base_paths.append("/usr")
path_tails = []
path_tails.append("gdal")
path_tails.append(os.path.join("gdal", "data"))
path_tails.append("epsg_csv")
path_tails.append("")
try:
for base in base_paths:
for tail in path_tails:
test_path = os.path.join(base, "share", tail)
test_file = os.path.join(test_path, "epsg.wkt")
if os.path.isfile(test_file):
raise StopIteration
except StopIteration:
# GDAL files found
gdal_data_path = test_path
else:
# files not found
raise GdalDataError(
"Can't find path to GDAL data files.")
gdal.SetConfigOption("GDAL_DATA", gdal_data_path)
_init_gdal_data()
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