def vsifile_generic(filename):
start_time = time.time()
fp = gdal.VSIFOpenL(filename, 'wb+')
assert fp is not None
assert gdal.VSIFWriteL('0123456789', 1, 10, fp) == 10
assert gdal.VSIFFlushL(fp) == 0
assert gdal.VSIFTruncateL(fp, 20) == 0
assert gdal.VSIFTellL(fp) == 10
assert gdal.VSIFTruncateL(fp, 5) == 0
assert gdal.VSIFTellL(fp) == 10
assert gdal.VSIFSeekL(fp, 0, 2) == 0
assert gdal.VSIFTellL(fp) == 5
gdal.VSIFWriteL('XX', 1, 2, fp)
gdal.VSIFCloseL(fp)
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
assert statBuf.size == 7
assert abs(start_time - statBuf.mtime) <= 2
fp = gdal.VSIFOpenL(filename, 'rb')
buf = gdal.VSIFReadL(1, 7, fp)
assert gdal.VSIFWriteL('a', 1, 1, fp) == 0
assert gdal.VSIFTruncateL(fp, 0) != 0
gdal.VSIFCloseL(fp)
assert buf.decode('ascii') == '01234XX'
# Test append mode on existing file
fp = gdal.VSIFOpenL(filename, 'ab')
gdal.VSIFWriteL('XX', 1, 2, fp)
gdal.VSIFCloseL(fp)
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
assert statBuf.size == 9
assert gdal.Unlink(filename) == 0
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG)
assert statBuf is None
# Test append mode on non existing file
fp = gdal.VSIFOpenL(filename, 'ab')
gdal.VSIFWriteL('XX', 1, 2, fp)
gdal.VSIFCloseL(fp)
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
assert statBuf.size == 2
assert gdal.Unlink(filename) == 0
def vsifile_generic(filename):
start_time = time.time()
fp = gdal.VSIFOpenL(filename, 'wb+')
if fp is None:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFWriteL('0123456789', 1, 10, fp) != 10:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFFlushL(fp) != 0:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFTruncateL(fp, 20) != 0:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFTellL(fp) != 10:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFTruncateL(fp, 5) != 0:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFTellL(fp) != 10:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFSeekL(fp, 0, 2) != 0:
gdaltest.post_reason('failure')
return 'fail'
if gdal.VSIFTellL(fp) != 5:
gdaltest.post_reason('failure')
return 'fail'
gdal.VSIFWriteL('XX', 1, 2, fp)
gdal.VSIFCloseL(fp)
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
if statBuf.size != 7:
gdaltest.post_reason('failure')
print(statBuf.size)
return 'fail'
if abs(start_time - statBuf.mtime) > 2:
gdaltest.post_reason('failure')
print(statBuf.mtime)
return 'fail'
fp = gdal.VSIFOpenL(filename, 'rb')
buf = gdal.VSIFReadL(1, 7, fp)
if gdal.VSIFWriteL('a', 1, 1, fp) != 0:
gdaltest.post_reason('fail')
return 'fail'
if gdal.VSIFTruncateL(fp, 0) == 0:
gdaltest.post_reason('fail')
return 'fail'
gdal.VSIFCloseL(fp)
if buf.decode('ascii') != '01234XX':
gdaltest.post_reason('failure')
print(buf.decode('ascii'))
return 'fail'
# Test append mode on existing file
fp = gdal.VSIFOpenL(filename, 'ab')
gdal.VSIFWriteL('XX', 1, 2, fp)
gdal.VSIFCloseL(fp)
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
if statBuf.size != 9:
gdaltest.post_reason('failure')
print(statBuf.size)
return 'fail'
if gdal.Unlink(filename) != 0:
gdaltest.post_reason('failure')
return 'fail'
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG)
if statBuf is not None:
gdaltest.post_reason('failure')
return 'fail'
# Test append mode on non existing file
fp = gdal.VSIFOpenL(filename, 'ab')
gdal.VSIFWriteL('XX', 1, 2, fp)
gdal.VSIFCloseL(fp)
statBuf = gdal.VSIStatL(filename, gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
if statBuf.size != 2:
gdaltest.post_reason('failure')
print(statBuf.size)
return 'fail'
if gdal.Unlink(filename) != 0:
gdaltest.post_reason('failure')
return 'fail'
return 'success'