def search(text, title, author, ID, loanStatus):
"""Searches for books with data similar to user's input information:
title - the list of titles
author - the list of authors
loanStauts - the list of loan statuses
ID - the list of ID's."""
text = text.strip()
numberOfBooks = booksNumber()
searchValue = [0] * numberOfBooks
if (len(title) < numberOfBooks):
title = []
author = []
ID = []
loanStatus = []
title, author, ID, loanStatus = readList()
for i in range(numberOfBooks):
if (text.strip().lower() == title[i].strip().lower() or
text.strip().lower() ==
author[i].strip().lower() or text.strip().lower() ==
ID[i].strip().lower() or
text.strip().lower() == loanStatus[i].strip().lower()):
searchValue[i] = len(text) * 1.1 + len(text.strip().split(" ")) * 0.3
else:
searchValue[i] = compare(text, title[i], searchValue[i])
searchValue[i] = compare(text, author[i], searchValue[i])
return searchValue
def delBook(ind):
"""Deletes a book from the table and from the database.txt file:
ind - the index of a book."""
global form
numberOfBooks = booksNumber()
title, author, loanStatus, ID = readList()
searchValue = search(searchBox.get(), title, author, ID, loanStatus)
searchValue, title, author, loanStatus, ID = quickSort(0, numberOfBooks,
searchValue, title, author, loanStatus, ID)
if (messagebox.askokcancel("Confirm Box","Are you sure you want to remove \
the following book?\n"
+ title[ind] + " by " + author[ind] + " having ID-" + ID[ind], parent=form)):
del title[ind]
del author[ind]
del loanStatus[ind]
del ID[ind]
numberOfBooks = booksNumber() - 1
title, author, loanStatus, ID = quickSortID(0, numberOfBooks, title,
author, loanStatus, ID)
writeToDatabase(title, author, loanStatus, ID, numberOfBooks)
updateList()
def cleanup(IDs):
"""Creates and returns the list of indices of the books which are suggested
to be removed:
IDs - IDs of books."""
title, author, loanStatus, ID = readList()
ID = IDs
numberOfBooks = booksNumber()
sugg = {}
r = open("logfile.txt", 'r')
for line in r:
id, year, month, day, status = splitLine(line)
sugg = isRecommended(year, month, day, status, sugg, id)
return getList(numberOfBooks, sugg, ID)
def returnBook():
"""Checks if data is valid and, if it is, marks a book as returned."""
global bookEntry
global error
numberOfBooks = booksNumber()
title, author, loanStatus, ID = readList()
found = False
if (type(error) == Label):
error.grid_remove()
excpt, id = invalidInput()
if (not excpt):
found, excpt = isTaken(numberOfBooks, id, title, author, ID,
loanStatus)
if (not found and not excpt):
notFound()
def delete():
"""Deletes the book having the user's input ID, otherwise, displays an error
message."""
global error
numberOfBooks = booksNumber()
title, author, loanStatus, ID = readList()
found = False
error.grid_forget()
excpt = False
try:
id = int(bookEntry.get())
except ValueError:
excpt = invalidID()
if (not excpt):
found = findBook(numberOfBooks, title, author, loanStatus, ID, id)
if (not found and not excpt):
notFound()
def updateList():
"""Updates the table in the form."""
global searchBox
title, author, loanStatus, ID = readList()
numberOfBooks = booksNumber()
booksFound = False
if (searchBox.get() == ""):
booksFound = searchBoxEmpty()
else:
clearEmptyLabel()
searchValueNew, titleNew, authorNew, loanStatusNew, IDNew = \
getSearchResult(title, author, loanStatus, ID, numberOfBooks)
booksFound = \
displayResults(title, author, loanStatus, ID, numberOfBooks, searchValueNew)
showSuggested(ID, searchValueNew)
booksNotFound(booksFound)
frameBackground.update_idletasks()
background.config(scrollregion=background.bbox("all"))
def delBook2(ind):
"""Deletes a book when a remove button is clicked in the form, where the
books, suggested to be removed are displayed:
ind - the index of a book."""
global form
title, author, loanStatus, ID = readList()
if (messagebox.askokcancel("Confirm Box","Are you sure you want to remove the \
following book?\n"
+ title[ind] + " by " + author[ind] + " having ID-" + ID[ind], parent=form)):
del title[ind]
del author[ind]
del loanStatus[ind]
del ID[ind]
numberOfBooks = booksNumber() - 1
title, author, loanStatus, ID = quickSortID(0, numberOfBooks, title,
author, loanStatus, ID)
writeToDatabase(title, author, loanStatus, ID, numberOfBooks)
form.destroy()
booksToRemove()
def changeRemoveColour(i, searchValueNew, toBeRemoved):
"""Changes colours of all remove buttons, not associated with a book suggested
to be removed, to the default colour:
i - index of a line
searchValueNew - the list of values, showing each book's similarity to user's
input
toBeRemoved - the list of indices of books, suggested to be removed."""
global remove
if (i == 0):
for z in range(0, toBeRemoved[0]):
if (searchValueNew[z] > 0):
remove[z].config(bg = bgColour)
if (i > 0 and i < len(toBeRemoved) - 1):
for z in range(toBeRemoved[i - 1] + 1, toBeRemoved[i]):
if (searchValueNew[z] > 0):
remove[z].config(bg = bgColour)
if (i == len(toBeRemoved) - 1):
for z in range(toBeRemoved[i] + 1, booksNumber()):
if (searchValueNew[z] > 0):
remove[z].config(bg = bgColour)
def chngBookStatus(ind):
"""Changes the status of a book from checked out to returned or otherwise:
ind - the index of a book."""
global form, searchBox
numberOfBooks = booksNumber()
title, author, loanStatus, ID = readList()
searchValue = search(searchBox.get(), title, author, ID, loanStatus)
searchValue, title, author, loanStatus, ID = quickSort(0, numberOfBooks,
searchValue, title, author, loanStatus, ID)
if not (int(loanStatus[ind]) == 0):
if (messagebox.askokcancel("Confirmation Box","Are you sure you want to \
mark the following book as returned?\n"
+ title[ind] + " by " + author[ind] + " having ID-" + ID[ind], parent=form)):
loanStatus[ind] = 0
title, author, loanStatus, ID = quickSortID(0, numberOfBooks, title,
author, loanStatus, ID)
writeToDatabase(title, author, loanStatus, ID, numberOfBooks)
bookreturn.writeToLogfileRet(ID[ind])
updateList()
else:
checkOutParticular(title, author,loanStatus, ID, ID[ind])
updateList()