本文整理匯總了Python中django.contrib.gis.gdal.libgdal.lgdal.VSIFree方法的典型用法代碼示例。如果您正苦於以下問題：Python lgdal.VSIFree方法的具體用法？Python lgdal.VSIFree怎麽用？Python lgdal.VSIFree使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類django.contrib.gis.gdal.libgdal.lgdal的用法示例。
在下文中一共展示了lgdal.VSIFree方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: check_string
# 需要導入模塊: from django.contrib.gis.gdal.libgdal import lgdal [as 別名]
# 或者: from django.contrib.gis.gdal.libgdal.lgdal import VSIFree [as 別名]
def check_string(result, func, cargs, offset=-1, str_result=False):
"""
Checks the string output returned from the given function, and frees
the string pointer allocated by OGR. The `str_result` keyword
may be used when the result is the string pointer, otherwise
the OGR error code is assumed. The `offset` keyword may be used
to extract the string pointer passed in by-reference at the given
slice offset in the function arguments.
"""
if str_result:
# For routines that return a string.
ptr = result
if not ptr:
s = None
else:
s = string_at(result)
else:
# Error-code return specified.
check_err(result)
ptr = ptr_byref(cargs, offset)
# Getting the string value
s = ptr.value
# Correctly freeing the allocated memory behind GDAL pointer
# with the VSIFree routine.
if ptr:
lgdal.VSIFree(ptr)
return s
# ### DataSource, Layer error-checking ###
# ### Envelope checking ### 示例2: check_string
# 需要導入模塊: from django.contrib.gis.gdal.libgdal import lgdal [as 別名]
# 或者: from django.contrib.gis.gdal.libgdal.lgdal import VSIFree [as 別名]
def check_string(result, func, cargs, offset=-1, str_result=False):
"""
Checks the string output returned from the given function, and frees
the string pointer allocated by OGR. The `str_result` keyword
may be used when the result is the string pointer, otherwise
the OGR error code is assumed. The `offset` keyword may be used
to extract the string pointer passed in by-reference at the given
slice offset in the function arguments.
"""
if str_result:
# For routines that return a string.
ptr = result
if not ptr: s = None
else: s = string_at(result)
else:
# Error-code return specified.
check_err(result)
ptr = ptr_byref(cargs, offset)
# Getting the string value
s = ptr.value
# Correctly freeing the allocated memory beind GDAL pointer
# w/the VSIFree routine.
if ptr: lgdal.VSIFree(ptr)
return s
### DataSource, Layer error-checking ###
### Envelope checking ###