def openCommand(self):
if (self.nrecs > 0):
result = tkMessageBox.askokcancel("Warning", "Opening a new file will result in loss of current data")
if result is True:
filename = askopenfilename(filetypes=[("XML Files","*.xml")])
if filename:
Mx.freeFile(self.collection) #free old collection for new file to be opened
self.display.delete(0, END)
#read MARCXML file and return status, C-pointer to top XmElem, and no. of records
(self.status, self.collection, self.nrecs) = Mx.readFile(filename)
if (self.status == 0):
for x in range(0, self.nrecs):
self.bibdata = Mx.marc2bib(self.collection, x) #extract 4 string from subelem[recno]
self.tempstring = str(x+1)+self.bibdata[0]+self.bibdata[1]+self.bibdata[2]+self.bibdata[3]
self.display.insert(END,self.tempstring)
elif (self.nrecs == 0):
filename = askopenfilename(filetypes=[("XML Files","*.xml")])
if filename:
(self.status, self.collection, self.nrecs) = Mx.readFile(filename)
if (self.status == 0):
self.display.delete(0, END)
for x in range (0, self.nrecs):
self.bibdata = Mx.marc2bib(self.collection, x) #extract 4 string from subelem[recno]
self.tempstring = str(x+1)+self.bibdata[0]+self.bibdata[1]+self.bibdata[2]+self.bibdata[3]
self.display.insert(END,self.tempstring)
if (self.status == 0):
self.label.config(text="Records: " +str(self.nrecs))
else:
self.label.config(text="Could not open XML File")
if (self.display.size() > 0):
self.dbmenu.entryconfig(0, state=NORMAL)
def appendCommand(self): #exactly the same as above except switches order of files being concat'd
if (self.display.size() > 0):
temp = tempfile.NamedTemporaryFile(delete=False)
self.status = Mx.writeTemp(temp.file, self.collection)
self.newfile = askopenfilename(filetypes=[("XML Files", "*.xml")])
tempOutput = tempfile.NamedTemporaryFile(delete=False)
temp.close()
tempOutput.close()
tstr = './mxtool'+' '+'-cat'+' '+self.newfile+' '+'<'+' '+temp.name+' '+'>'+' '+tempOutput.name
os.system(tstr)
Mx.freeFile(self.collection)
self.status, self.collection, self.nrecs2 = Mx.readFile(tempOutput.name)
if (self.status == 0):
self.display.delete(0, END)
for x in range (0, self.nrecs2):
self.bibdata = Mx.marc2bib(self.collection, x) #extract 4 string from subelem[recno]
self.tempstring = str(x+1)+self.bibdata[0]+self.bibdata[1]+self.bibdata[2]+self.bibdata[3]
self.display.insert(END,self.tempstring)
self.label.config(text="Records Added: "+str(self.nrecs2-self.nrecs)+ " Total Records: " +str(self.nrecs2))
else:
self.label.config(text="Could not concatenate XML Files")
os.unlink(temp.name)
os.unlink(tempOutput.name)
else:
tkMessageBox.showerror("Error", "No XML File Open")
def insertCommand(self):
if (self.display.size() > 0):
temp = tempfile.NamedTemporaryFile(delete=False) #tempfile for current display to be written to
self.status = Mx.writeTemp(temp.file, self.collection)
self.newfile = askopenfilename(filetypes=[("XML Files", "*.xml")])
tempOutput = tempfile.NamedTemporaryFile(delete=False)
temp.close()
tempOutput.close()
tstr = './mxtool'+' '+'-cat'+' '+temp.name+' '+'<'+' '+self.newfile+' '+'>'+' '+tempOutput.name
os.system(tstr) #command line execution: calls above statement
Mx.freeFile(self.collection)
self.status, self.collection, self.nrecs2 = Mx.readFile(tempOutput.name) #reads new file to update display
if (self.status == 0):
self.display.delete(0, END)
for x in range (0, self.nrecs2):
self.bibdata = Mx.marc2bib(self.collection, x) #extract 4 string from subelem[recno]
self.tempstring = str(x+1)+self.bibdata[0]+self.bibdata[1]+self.bibdata[2]+self.bibdata[3]
self.display.insert(END,self.tempstring)
self.label.config(text="Records Added: "+str(self.nrecs2-self.nrecs)+ " Total Records: " +str(self.nrecs2))
else:
self.label.config(text="Could not concatenate XML Files")
os.unlink(temp.name) #removes temporary files now incase user decides to insert multiple times
os.unlink(tempOutput.name) #in one session so as to not lose track of all files being created
else:
tkMessageBox.showerror("Error", "No XML File Open")
def undoCommand(self): self.display.delete(0, END) Mx.freeFile(self.collection) #frees collection because the user wishes to undo self.collection = self.tempCollection #have the empty collection point to the old collection for x in range (0, self.nrecs): #update display with old data self.bibdata = Mx.marc2bib(self.collection, x) self.tempstring = str(x+1)+self.bibdata[0]+self.bibdata[1]+self.bibdata[2]+self.bibdata[3] self.display.insert(END,self.tempstring) self.nrecs2 = self.nrecs self.label.config(text="Records: "+str(self.nrecs2)) self.undo.config(state=DISABLED) #disable undo key to not be abused and not crash
def quit(self):
self.result = tkMessageBox.askyesno("Warning", "Do you wish to exit?")
if self.result is True:
if (self.collection != 0):
Mx.freeFile(self.collection)
Mx.term() #terminate libxml2 processing and release storage
#os.system("make clean")
cursor.close()
conn.close()
root
root.destroy()
