/usr/lib/python3/dist-packages/openpyxl/packaging/manifest.py is in python3-openpyxl 2.3.0-1.
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# Copyright (c) 2010-2015 openpyxl
"""
File manifest
"""
import mimetypes
import os.path
from openpyxl.descriptors.serialisable import Serialisable
from openpyxl.descriptors import String, Sequence
from openpyxl.xml.functions import fromstring
from openpyxl.xml.constants import (
ARC_CORE,
ARC_CONTENT_TYPES,
ARC_WORKBOOK,
ARC_APP,
ARC_THEME,
ARC_STYLE,
ARC_SHARED_STRINGS,
EXTERNAL_LINK,
THEME_TYPE,
STYLES_TYPE,
XLSX,
XLSM,
XLTM,
XLTX,
WORKSHEET_TYPE,
COMMENTS_TYPE,
SHARED_STRINGS,
DRAWING_TYPE,
CHART_TYPE,
CHARTSHAPE_TYPE,
CHARTSHEET_TYPE,
CONTYPES_NS
)
# initialise mime-types
mimetypes.init()
mimetypes.add_type('application/xml', ".xml")
mimetypes.add_type('application/vnd.openxmlformats-package.relationships+xml', ".rels")
mimetypes.add_type("application/vnd.ms-office.activeX", ".bin")
mimetypes.add_type("application/vnd.openxmlformats-officedocument.vmlDrawing", ".vml")
class FileExtension(Serialisable):
tagname = "Default"
Extension = String()
ContentType = String()
def __init__(self, Extension, ContentType):
self.Extension = Extension
self.ContentType = ContentType
def __hash__(self):
return hash((self.Extension, self.ContentType))
class Override(Serialisable):
tagname = "Override"
PartName = String()
ContentType = String()
def __init__(self, PartName, ContentType):
self.PartName = PartName
self.ContentType = ContentType
DEFAULT_TYPES = [
FileExtension("rels", "application/vnd.openxmlformats-package.relationships+xml"),
FileExtension("xml", "application/xml"),
]
DEFAULT_OVERRIDE = [
Override("/" + ARC_WORKBOOK, XLSX), # Workbook
Override("/" + ARC_SHARED_STRINGS, SHARED_STRINGS), # Shared strings
Override("/" + ARC_STYLE, STYLES_TYPE), # Styles
Override("/" + ARC_THEME, THEME_TYPE), # Theme
Override("/docProps/core.xml", "application/vnd.openxmlformats-package.core-properties+xml"),
Override("/docProps/app.xml", "application/vnd.openxmlformats-officedocument.extended-properties+xml")
]
class Manifest(Serialisable):
tagname = "Types"
Default = Sequence(expected_type=FileExtension)
Override = Sequence(expected_type=Override)
__elements__ = ("Default", "Override")
def __init__(self,
Default=(),
Override=()
):
if not Default:
Default = DEFAULT_TYPES
self.Default = Default
if not Override:
Override = DEFAULT_OVERRIDE
self.Override = Override
@property
def filenames(self):
return [part.PartName for part in self.Override]
@property
def extensions(self):
exts = set([os.path.splitext(part.PartName)[-1] for part in self.Override])
return [(ext[1:], mimetypes.types_map[ext]) for ext in sorted(exts)]
def to_tree(self):
"""
Custom serialisation method to allow setting a default namespace
"""
defaults = [t.Extension for t in self.Default]
for ext, mime in self.extensions:
if ext not in defaults:
mime = FileExtension(ext, mime)
self.Default.append(mime)
tree = super(Manifest, self).to_tree()
tree.set("xmlns", CONTYPES_NS)
return tree
def write_content_types(workbook, as_template=False):
seen = set()
manifest = Manifest()
if workbook.vba_archive:
node = fromstring(workbook.vba_archive.read(ARC_CONTENT_TYPES))
manifest = Manifest.from_tree(node)
del node
seen = set(manifest.filenames)
# templates
for part in manifest.Override:
if part.PartName == "/" + ARC_WORKBOOK:
ct = as_template and XLTX or XLSX
if workbook.vba_archive:
ct = as_template and XLTM or XLSM
part.ContentType = ct
drawing_id = 0
chart_id = 0
comments_id = 0
# ugh! can't we get this from the zip archive?
# worksheets
for sheet_id, sheet in enumerate(workbook.worksheets):
name = '/xl/worksheets/sheet%d.xml' % (sheet_id + 1)
if name not in seen:
manifest.Override.append(Override(name, WORKSHEET_TYPE))
if sheet._charts or sheet._images:
drawing_id += 1
name = '/xl/drawings/drawing%d.xml' % drawing_id
if name not in seen:
manifest.Override.append(Override(name, DRAWING_TYPE))
for chart in sheet._charts:
chart_id += 1
name = '/xl/charts/chart%d.xml' % chart_id
if name not in seen:
manifest.Override.append(Override(name, CHART_TYPE))
if sheet._comment_count > 0:
comments_id += 1
vml = FileExtension("vml", mimetypes.types_map[".vml"])
if vml not in manifest.Default:
manifest.Default.append(vml)
name = '/xl/comments%d.xml' % comments_id
if name not in seen:
manifest.Override.append(Override(name, COMMENTS_TYPE))
# chartsheets
for sheet_id, sheet in enumerate(workbook.chartsheets, sheet_id+1):
name = '/xl/chartsheets/sheet%d.xml' % (sheet_id)
if name not in seen:
manifest.Override.append(Override(name, CHARTSHEET_TYPE))
if sheet._charts:
drawing_id += 1
name = '/xl/drawings/drawing%d.xml' % drawing_id
if name not in seen:
manifest.Override.append(Override(name, DRAWING_TYPE))
for chart in sheet._charts:
chart_id += 1
name = '/xl/charts/chart%d.xml' % chart_id
if name not in seen:
manifest.Override.append(Override(name, CHART_TYPE))
#external links
for idx, _ in enumerate(workbook._external_links, 1):
name = '/xl/externalLinks/externalLink{0}.xml'.format(idx)
manifest.Override.append(Override(name, EXTERNAL_LINK))
return manifest
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