59 lines
2.4 KiB
Python
Executable File
59 lines
2.4 KiB
Python
Executable File
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Copyright 2014 California Institute of Technology. ALL RIGHTS RESERVED.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# United States Government Sponsorship acknowledged. This software is subject to
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# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
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# (No [Export] License Required except when exporting to an embargoed country,
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# end user, or in support of a prohibited end use). By downloading this software,
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# the user agrees to comply with all applicable U.S. export laws and regulations.
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# The user has the responsibility to obtain export licenses, or other export
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# authority as may be required before exporting this software to any 'EAR99'
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# embargoed foreign country or citizen of those countries.
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#
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# Author: Eric Belz
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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"""Non RDF specific python helpers"""
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## \namespace rdf.utils Non-RDF specific utilities
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## Generate non-zero entries from an ASCII file
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## \param src Is the source file name
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## \param purge = True reject blanks (unless False)
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## \retval< <a href="https://wiki.python.org/moin/Generators">Generator</a>
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## that generates (nonzero) lines for an ASCII file
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def read_file(src):
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"""src --> src file name
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purge=True igonors black lines"""
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with open(src, 'r') as fsrc:
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for line in read_stream(fsrc):
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yield line
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## Yield stripped lines from a file
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## \param fsrc A readable file-like object
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## \retval< <a href="https://wiki.python.org/moin/Generators">Generator</a>
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## that generates fsrc.readline() (stripped).
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def read_stream(fsrc):
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"""Generate lines from a stream (fsrc)"""
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tell = fsrc.tell()
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line = fsrc.readline().strip()
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while tell != fsrc.tell() or line:
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yield line
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tell = fsrc.tell()
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line = fsrc.readline().strip()
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