def getMaterialExport(request, *args, **kwargs):
""" Check and return the PDF file of given material if exist
"""
format_name = request.path.strip("/").split("/")[-1].lower()
mid = kwargs.get("mid", None)
version = kwargs.get("version", None)
if version:
version = int(version)
else:
# only catch the case of missing version ~ getting latest
# error will be raised in other cases
version = getMaterialLatestVersion(mid)
material = Material.objects.get(material_id=mid, version=version)
export_format, created = models.ExportFormat.objects.get_or_create(
name=format_name, description="", base_path=format_name
)
get_it = False
try:
export_obj = MaterialExport.objects.get(material_id=mid, export_format=export_format, version=version)
if str(request.GET.get("refresh", None)) == "1":
export_obj.delete()
get_it = requestMaterialExport(material, format_name)
raise IOError
# check if exported file existing
if isExportProcessing(export_obj):
get_it = requestMaterialExport(material, format_name)
elif not os.path.exists(export_obj.path):
export_obj.delete()
raise IOError
else:
get_it = True
except (MaterialExport.DoesNotExist, IOError):
get_it = requestMaterialExport(material, format_name)
except:
raise Http404
# ready for download or not?
if get_it:
export_obj = MaterialExport.objects.get(pk=export_obj.id)
# return the PDF content, this should be served be the web server
with open(export_obj.path, "rb") as pdf:
pdf_name = "%s-%d.%s" % (mid, version, format_name)
data = pdf.read()
response = HttpResponse(data, mimetype=settings.EXPORT_MIMETYPES[format_name])
try:
friendly_name = "%s.%s" % (material.title.encode("utf-8"), format_name)
except UnicodeEncodeError:
friendly_name = "%s.%s" % slugify(material.title)
except:
friendly_name = pdf_name
response["content-disposition"] = 'attachment; filename="%s"' % friendly_name
return response
else:
return HttpResponse(status=HTTP_CODE_PROCESSING)
def getMaterialPDF(request, *args, **kwargs):
""" Check and return the PDF file of given material if exist
"""
mid = kwargs.get('mid', None)
version = kwargs.get('version', None)
if version:
version = int(version)
else:
# only catch the case of missing version ~ getting latest
# error will be raised in other cases
version = getMaterialLatestVersion(mid)
material = Material.objects.get(material_id=mid, version=version)
get_it = False
try:
export_obj = MaterialExport.objects.get(material_id=mid, version=version)
if str(request.GET.get('refresh', None)) == '1':
export_obj.delete()
get_it = requestMaterialPDF(material)
raise IOError
# check if exported file existing
if isExportProcessing(export_obj):
get_it = requestMaterialPDF(material)
elif not os.path.exists(export_obj.path):
export_obj.delete()
raise IOError
else:
get_it = True
except (MaterialExport.DoesNotExist, IOError):
get_it = requestMaterialPDF(material)
except:
raise Http404
# ready for download or not?
if get_it:
export_obj = MaterialExport.objects.get(pk=export_obj.id)
# return the PDF content, this should be served be the web server
with open(export_obj.path, 'rb') as pdf:
pdf_name = '%s-%d.pdf' % (mid, version)
data = pdf.read()
response = HttpResponse(data, mimetype='application/pdf')
try:
friendly_name = '%s.pdf' % material.title.encode('utf-8')
except UnicodeEncodeError:
friendly_name = '%s.pdf' % slugify(material.title)
except:
friendly_name = pdf_name
response['content-disposition'] = 'attachment; filename="%s"' % friendly_name
return response
else:
return HttpResponse(status=HTTP_CODE_PROCESSING)
def zipMaterialInternal(material):
""" Collects all material info and put it into a ZIP file.
Full path of the zip file will be returned to the caller.
"""
mid = material.material_id
version = material.version
mtype = material.material_type
# init the zip package
zip_path = os.path.join(settings.TEMP_DIR, ZIP_FILE_NAME % (str(mid), str(version)))
zf = ZipFile(zip_path, "w", ZIP_DEFLATED)
# check if module or collection
if mtype == MTYPE_MODULE:
# read all material files, and put into the zip package
mfids = listMaterialFiles(mid, version)
for mfid in mfids:
try:
mf = MaterialFile.objects.get(id=mfid)
zf.writestr(mf.name, mf.mfile.read())
mf.mfile.close()
except:
print "Error when getting material file %s" % mf.name
# add material text content
raw_content = material.text
try:
raw_content = raw_content.encode("utf-8")
except:
raw_content = raw_content.decode("utf-8").encode("utf-8")
zf.writestr(ZIP_HTML_FILE, raw_content)
# generate material json
persons = models.getMaterialPersons(material.id)
try:
author_ids = persons["author"].split(",")
except:
author_ids = []
author_names = models.getPersonName(author_ids)
index_content = {
"title": material.title,
"url": MOD_SOURCE_URL % material.material_id,
"authors": author_names,
"version": material.version,
"language": material.language,
}
index_content = json.dumps(index_content)
zf.writestr(ZIP_INDEX_MODULE, index_content)
elif mtype == MTYPE_COLLECTION:
# get list of all contained materials
all_materials = getNestedMaterials(material)
# load materials into ZIP
for cid in range(len(all_materials)):
m_id = all_materials[cid][0]
m_version = all_materials[cid][1]
m_title = all_materials[cid][2]
if m_version is None:
m_version = getMaterialLatestVersion(m_id)
mfids = listMaterialFiles(m_id, m_version)
m_object = Material.objects.get(material_id=m_id)
for mfid in mfids:
try:
mf = MaterialFile.objects.get(id=mfid)
zf.writestr(m_id + "/" + mf.name, mf.mfile.read())
mf.mfile.close()
except:
print "Error when reading material file: " + mf.name
zf.writestr(m_id + "/" + ZIP_HTML_FILE, m_object.text)
# prepare some fields
editor_ids = models.getMaterialPersons(material.id)["editor"]
editor_ids = editor_ids.split(",")
editors = models.getPersonName(editor_ids)
if isinstance(editors, str):
editors = [editors]
material_url = COL_SOURCE_URL % material.material_id
# generate collection.json
try:
index_content = json.loads(material.text)
index_content["id"] = material.material_id
index_content["title"] = material.title
index_content["version"] = str(material.version)
index_content["license"] = MATERIAL_LICENSE
index_content["url"] = material_url
index_content["editors"] = editors
index_content["language"] = material.language
index_content = json.dumps(index_content)
except:
# another way
index_content = '{"id":"%s",' % material.material_id
index_content += '"title":"%s",' % material.title
index_content += '"version":"%s",' % str(material.version)
index_content += '"license":"%s",' % MATERIAL_LICENSE
index_content += '"url":"%s",' % material_url
index_content += '"editors":"%s",' % editors
index_content += '"language": "%s",' % material.language
index_content += material.text[material.text.index("{") + 1 :]
zf.writestr(ZIP_INDEX_COLLECTION, index_content)
zf.close()
return realpath(zf.filename)
def zipMaterialExternal(material):
""" Collects all material info and put into a folder, then call
external zip command to do its job.
Full path of the zip file will be returned to the caller.
"""
mid = material.material_id
version = material.version
mtype = material.material_type
# create material directory
dir_path = os.path.join(settings.TEMP_DIR, "%s-%d" % (mid, version))
# check if module or collection
if mtype == MTYPE_MODULE:
createMaterialDirectory(dir_path, material)
elif mtype == MTYPE_COLLECTION:
createDirectory(dir_path)
# get list of all contained materials
all_materials = getNestedMaterials(material)
# load materials into ZIP
for cid in range(len(all_materials)):
m_id = all_materials[cid][0]
m_version = all_materials[cid][1] or models.getMaterialLatestVersion(m_id)
m_object = models.getMaterial(m_id, m_version)
m_path = os.path.join(dir_path, m_id)
createMaterialDirectory(m_path, m_object)
# prepare some fields
try:
editor_ids = models.getMaterialPersons(material.id)["editor"]
editor_ids = editor_ids.split(",")
editors = models.getPersonName(editor_ids)
except KeyError:
editors = [""]
if isinstance(editors, str):
editors = [editors]
material_url = COL_SOURCE_URL % material.material_id
# generate collection.json
try:
index_content = json.loads(material.text)
index_content["id"] = material.material_id
index_content["title"] = material.title
index_content["version"] = material.version
index_content["license"] = MATERIAL_LICENSE
index_content["url"] = material_url
index_content["editors"] = editors
index_content["language"] = material.language
index_content = json.dumps(index_content)
except:
# another way
index_content = '{"id":"%s",' % material.material_id
index_content += '"title":"%s",' % material.title
index_content += '"version":"%s",' % str(material.version)
index_content += '"license":"%s",' % MATERIAL_LICENSE
index_content += '"url":"%s",' % material_url
index_content += '"editors":"%s",' % editors
index_content += '"language":"%s",' % material.language
index_content += material.text[material.text.index("{") + 1 :]
with open(os.path.join(dir_path, ZIP_INDEX_COLLECTION), "w") as mnf:
mnf.write(index_content)
# zip the material files
cmd = "zip -r5 %s ./*" % buildZipPath(dir_path)
process = Popen(cmd, shell=True, cwd=dir_path)
try:
process.wait()
except TimeoutExpired:
print "Timed-out when creating material ZIP file"
finally:
rmtree(dir_path)
if process.poll() == 0:
return buildZipPath(dir_path)
