def display_data(value):
"""Displaying the head for the selected file."""
db_value = db.get("file")
if value is None and db_value is None:
return ""
elif value is None and not db_value is None:
value = db_value
elif not value == db_value:
db.reset()
format = FileUtils.file_format(value)
if format == 'csv' or format == 'txt':
path = FileUtils.path('raw', value)
head = DataUtils.read_text_head(path)
table_col = [html.Col(style = {'width':"10%"}), html.Col(style = {'width':"90%"})]
table_header = [html.Thead(html.Tr([html.Th("Row No"), html.Th("Data")]))]
rows = []
for i in range(len(head)):
row = html.Tr([html.Td(i+1), html.Td(head[i])])
rows.append(row)
table_body = [html.Tbody(rows)]
table = dbc.Table(table_col+ table_header + table_body, bordered=True, style = common.table_style)
div = [common.msg("Selected File: " + value),
common.msg("Selected Format: " + format),
table,
html.Br(),
csv_properties_div]
elif format == 'jpeg' or format == 'jpg' or format == 'gif':
div = [common.msg("Selected File: " + value),
common.msg("Selected Format: " + format)]
else:
div = "Format Not Supported!!"
db.put("file", value)
db.put("format", format)
return div
def read_text_head(path: str):
format = FileUtils.file_format(path)
op = None
if format == 'csv' or format == 'txt':
with open(path) as myfile:
head = [next(myfile).strip() for x in range(N)]
op = head
return op
def read(dir: str, filename: str):
format = FileUtils.file_format(filename)
path = FileUtils.path(dir, filename)
op = None
if format == 'csv' or format == 'txt':
with open(path) as myfile:
head = [next(myfile).strip() for x in range(N)]
op = head
elif format == 'jpeg' or format == 'jpg' or format == 'gif':
""
else:
op = "Format Not Supported!!"
return op