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3488c8bf4d
This adds support for SPS v1, SPS v2.1, custom fixed-width, CSV and custom sailline info preplot imports.
60 lines
1.3 KiB
Python
60 lines
1.3 KiB
Python
import fwr
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import delimited
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"""
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Preplot importing functions.
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"""
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def is_fixed_width (file):
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fixed_width_types = [ "sps1", "sps21", "p190", "fixed-width" ]
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return type(file) == dict and "type" in file and file["type"] in fixed_width_types
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def is_delimited (file):
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delimited_types = [ "csv", "p111", "x-sl+csv" ]
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return type(file) == dict and "type" in file and file["type"] in delimited_types
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def from_file (file, realpath = None):
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"""
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Return a list of dicts, where each dict has the structure:
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{
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"line_name": <int>,
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"points": [
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{
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"line_name": <int>,
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"point_number": <int>,
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"easting": <float>,
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"northing": <float>
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},
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…
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]
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}
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On error, return a string describing the error condition.
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"""
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filepath = realpath or file["path"]
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if is_fixed_width(file):
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records = fwr.from_file(filepath, file)
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elif is_delimited(file):
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records = delimited.from_file(filepath, file)
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else:
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return "Unrecognised file format"
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if type(records) == str:
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# This is an error message
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return records
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if file.get("type") == "x-sl+csv":
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return records
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lines = []
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line_names = set([r["line_name"] for r in records])
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for line_name in line_names:
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line = dict(line_name=line_name)
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line_points = [r for r in records if r["line_name"] == line_name]
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if line_points:
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line["points"] = line_points
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lines.append(line)
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return lines
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