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utils.py
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utils.py
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import os, sys
def paper_folder(paper_name, config):
root_folder = os.path.expanduser(config.get("folders", "root"))
return os.path.join(root_folder, paper_name)
def folder_exists(folder):
return os.path.exists(folder) and os.path.isdir(folder)
def paper_metadata_path(paper_name, config):
this_paper_folder = paper_folder(paper_name, config)
if not folder_exists(this_paper_folder):
print("Invalid paper name '%s'" % (paper_name), file=sys.stderr)
return None
metadata_path = os.path.join(this_paper_folder, "metadata.yaml")
if not os.path.exists(metadata_path):
print("Can't find paper metadata file '%s'" % (
metadata_path), file=sys.stderr)
return None
else:
return metadata_path
def paper_notes_path(paper_name, config):
this_paper_folder = paper_folder(paper_name, config)
if not folder_exists(this_paper_folder):
print("Invalid paper name '%s'" % (paper_name), file=sys.stderr)
return None
notes_path = os.path.join(this_paper_folder, "notes." + config.get(
"notes", "extension"))
if not os.path.exists(notes_path):
print("Can't find paper notes file '%s'" % (
notes_path), file=sys.stderr)
return None
else:
return notes_path
def paper_path(paper_name, config, allow_nonexistent = False):
this_paper_folder = paper_folder(paper_name, config)
if not folder_exists(this_paper_folder) and not allow_nonexistent:
print("Invalid paper name '%s'" % (paper_name), file=sys.stderr)
return None
paper_path = os.path.join(this_paper_folder, "%s.pdf" % (paper_name))
if not os.path.exists(paper_path) and not allow_nonexistent:
print("Can't find paper file '%s'" % (paper_path), file=sys.stderr)
return None
else:
return paper_path
def forbidden_chars(paper_name):
"""
Returns the first forbidden character that appears in the paper name, or
None if no forbidden characters are encountered
"""
# So that bash completion doesn't get sad, paper names can't contain a
# quote, an ampersand or a pipe
forbidden_characters = ["'", '"', "&", "<", ">", "|"]
for character in forbidden_characters:
if paper_name.find(character) != -1:
return character
return None