mirror of
https://expo.survex.com/repositories/troggle/.git
synced 2024-11-22 07:11:52 +00:00
113 lines
4.5 KiB
Python
113 lines
4.5 KiB
Python
from pathlib import Path
|
|
|
|
from django.conf import settings
|
|
from django.http import HttpResponse
|
|
from django.shortcuts import render
|
|
|
|
from troggle.core.models.survex import DrawingFile
|
|
from troggle.core.views.expo import getmimetype
|
|
|
|
# import parsers.surveys
|
|
|
|
"""Some of these views serve files as binary blobs, and simply set the mime type based on the file extension,
|
|
as does the urls.py dispatcher which sends them here. Here they should actually have the filetype checked
|
|
by looking inside the file before being served.
|
|
|
|
|
|
"""
|
|
|
|
todo = """- Need to check if invalid query string is invalid, or produces multiple replies
|
|
and render a user-friendly error page.
|
|
"""
|
|
|
|
|
|
def unescape(input):
|
|
"""These look like HTML entities, but they are not. They are tunnel-specific encodings"""
|
|
codes = {
|
|
"&space;": " ",
|
|
""": '"',
|
|
"&tab;": "\t",
|
|
"&backslash;": "\\",
|
|
"&newline;": "\n|\t",
|
|
"&apostrophe": "'",
|
|
}
|
|
for c in codes:
|
|
# print(c, codes[c])
|
|
input = input.replace(c, codes[c])
|
|
return input
|
|
|
|
|
|
def dwgallfiles(request):
|
|
"""Report on all the drawing files in the system. These were loaded by parsing the entire directory tree"""
|
|
dwgfiles = DrawingFile.objects.all()
|
|
return render(request, "dwgfiles.html", {"dwgfiles": dwgfiles, "settings": settings})
|
|
|
|
|
|
def dwgfilesingle(request, path):
|
|
"""sends a single binary file to the user. It could be an old PNG, PDF or SVG
|
|
not just Tunnel or Therion
|
|
|
|
The db records created on datbase reset import are not used when we look for an individual drawing, only
|
|
collections of them.
|
|
|
|
Note the infelicity that this will deliver files that exist, but are hidden on the previous
|
|
webpage /dwgupload/... if the user types the filename into the browser bar. Could be a problem?
|
|
Should we validate using uploads.py dwgvaliddisp() here too?
|
|
"""
|
|
tfile = Path(settings.DRAWINGS_DATA, path.replace(":", "#"))
|
|
if not tfile.is_file():
|
|
message = f"Drawing file not found in filesystem at '{path}' \n\t\tMaybe a new dataimport needs to be done to get up to date."
|
|
return render(request, "errors/generic.html", {"message": message})
|
|
|
|
if Path(tfile).suffix in [
|
|
".xml"
|
|
]: # tunnel files are usually 'us-ascii' (!). And may not close all XML tags properly either.
|
|
for encoding in ["us-ascii", "iso-8859-1", "utf-8"]:
|
|
try:
|
|
# print(f'attempting {encoding} for {tfile}')
|
|
with open(tfile, encoding=encoding, errors="strict") as f:
|
|
print(f"- before reading any {encoding}")
|
|
lines = f.readlines()
|
|
# print(f'- finished reading {encoding}')
|
|
clean = []
|
|
for l in lines:
|
|
clean.append(unescape(l)) # deals with strangely embedded survex file
|
|
# print(f'- Cleaned and stripped.')
|
|
try:
|
|
return HttpResponse(content=clean, content_type="text/xml")
|
|
except:
|
|
return HttpResponse(
|
|
content=f"Render fail for this file: {tfile} Please report to a nerd. Probably Julian's fault."
|
|
)
|
|
|
|
except:
|
|
print(f"! Exception when reading {encoding}")
|
|
continue
|
|
|
|
print(f"! None of those encodings worked for {tfile}")
|
|
try:
|
|
return HttpResponse(content=open(tfile, errors="ignore"), content_type=getmimetype(tfile))
|
|
except:
|
|
return HttpResponse(
|
|
content=f"Unable to understand the encoding for this file: {tfile} Please report to a nerd."
|
|
)
|
|
|
|
if Path(tfile).suffix in ["th2", ".th"]:
|
|
try:
|
|
return HttpResponse(content=open(tfile, errors="strict"), content_type="text/txt") # default utf-8
|
|
except:
|
|
return HttpResponse(
|
|
content=f"Unable to understand the encoding for this file: {tfile} Please report to a nerd."
|
|
)
|
|
|
|
else: # SVG, JPG etc
|
|
try:
|
|
return HttpResponse(content=open(tfile, mode="rb"), content_type=getmimetype(tfile)) # default utf-8
|
|
except:
|
|
try:
|
|
return HttpResponse(content=open(tfile, mode="rb"))
|
|
except:
|
|
return HttpResponse(
|
|
content=f"Unable to understand the encoding '{getmimetype(tfile)}' for this file: {tfile} Note that Apache will do its own thing here. Please report to a nerd."
|
|
)
|