本文整理汇总了Python中django.contrib.gis.gdal.libgdal.lgdal.VSIFree方法的典型用法代码示例。如果您正苦于以下问题：Python lgdal.VSIFree方法的具体用法？Python lgdal.VSIFree怎么用？Python lgdal.VSIFree使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类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个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: check_string
# 需要导入模块: from django.contrib.gis.gdal.libgdal import lgdal [as 别名]
# 或者: from django.contrib.gis.gdal.libgdal.lgdal import VSIFree [as 别名]
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
# 需要导入模块: from django.contrib.gis.gdal.libgdal import lgdal [as 别名]
# 或者: from django.contrib.gis.gdal.libgdal.lgdal import VSIFree [as 别名]
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 ###