134 lines
4.2 KiB
Python
134 lines
4.2 KiB
Python
from pyexcel_io import exceptions
|
|
from pyexcel_io.book import _convert_content_to_stream
|
|
from pyexcel_io.sheet import SheetReader
|
|
from pyexcel_io.plugins import NEW_READERS
|
|
from pyexcel_io._compact import OrderedDict
|
|
|
|
|
|
def clean_keywords(keywords):
|
|
sheet_keywords = {}
|
|
native_sheet_keywords = {}
|
|
args_list = [
|
|
"start_row",
|
|
"row_limit",
|
|
"start_column",
|
|
"column_limit",
|
|
"skip_column_func",
|
|
"skip_row_func",
|
|
"skip_empty_rows",
|
|
"row_renderer",
|
|
]
|
|
for arg in keywords:
|
|
if arg in args_list:
|
|
sheet_keywords[arg] = keywords[arg]
|
|
else:
|
|
native_sheet_keywords[arg] = keywords[arg]
|
|
return sheet_keywords, native_sheet_keywords
|
|
|
|
|
|
class Reader(object):
|
|
def __init__(self, file_type, library=None):
|
|
self.file_type = file_type
|
|
self.library = library
|
|
self.keywords = None
|
|
|
|
def open(self, file_name, **keywords):
|
|
reader_class = NEW_READERS.get_a_plugin(
|
|
self.file_type, location="file", library=self.library
|
|
)
|
|
self.keywords, native_sheet_keywords = clean_keywords(keywords)
|
|
self.reader = reader_class(file_name, **native_sheet_keywords)
|
|
return self.reader
|
|
|
|
def open_content(self, file_content, **keywords):
|
|
self.keywords, native_sheet_keywords = clean_keywords(keywords)
|
|
try:
|
|
reader_class = NEW_READERS.get_a_plugin(
|
|
self.file_type, location="content", library=self.library
|
|
)
|
|
self.reader = reader_class(file_content, **native_sheet_keywords)
|
|
return self.reader
|
|
except (
|
|
exceptions.NoSupportingPluginFound,
|
|
exceptions.SupportingPluginAvailableButNotInstalled,
|
|
):
|
|
file_stream = _convert_content_to_stream(
|
|
file_content, self.file_type
|
|
)
|
|
return self.open_stream(file_stream, **native_sheet_keywords)
|
|
|
|
def open_stream(self, file_stream, **keywords):
|
|
self.keywords, native_sheet_keywords = clean_keywords(keywords)
|
|
reader_class = NEW_READERS.get_a_plugin(
|
|
self.file_type, location="memory", library=self.library
|
|
)
|
|
self.reader = reader_class(file_stream, **native_sheet_keywords)
|
|
return self.reader
|
|
|
|
def read_sheet_by_name(self, sheet_name):
|
|
"""
|
|
read a named sheet from a excel data book
|
|
"""
|
|
for index, content in enumerate(self.reader.content_array):
|
|
if content.name == sheet_name:
|
|
return {content.name: self.read_sheet(index)}
|
|
else:
|
|
raise ValueError("Cannot find sheet %s" % sheet_name)
|
|
|
|
def read_sheet(self, sheet_index):
|
|
sheet_reader = self.reader.read_sheet(sheet_index)
|
|
sheet = EncapsulatedSheetReader(sheet_reader, **self.keywords)
|
|
return sheet.to_array()
|
|
|
|
def read_sheet_by_index(self, sheet_index):
|
|
"""
|
|
read an indexed sheet from a excel data book
|
|
"""
|
|
try:
|
|
name = self.reader.content_array[sheet_index].name
|
|
return {name: self.read_sheet(sheet_index)}
|
|
|
|
except IndexError:
|
|
self.close()
|
|
raise
|
|
|
|
def read_all(self):
|
|
"""
|
|
read everything from a excel data book
|
|
"""
|
|
result = OrderedDict()
|
|
for index, sheet in enumerate(self.reader.content_array):
|
|
result.update(
|
|
{self.reader.content_array[index].name: self.read_sheet(index)}
|
|
)
|
|
return result
|
|
|
|
def read_many(self, sheets):
|
|
"""
|
|
read everything from a excel data book
|
|
"""
|
|
result = OrderedDict()
|
|
for sheet in sheets:
|
|
if isinstance(sheet, int):
|
|
result.update(self.read_sheet_by_index(sheet))
|
|
else:
|
|
result.update(self.read_sheet_by_name(sheet))
|
|
return result
|
|
|
|
def close(self):
|
|
return self.reader.close()
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, a_type, value, traceback):
|
|
self.close()
|
|
|
|
|
|
class EncapsulatedSheetReader(SheetReader):
|
|
def row_iterator(self):
|
|
yield from self._native_sheet.row_iterator()
|
|
|
|
def column_iterator(self, row):
|
|
yield from self._native_sheet.column_iterator(row)
|