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InputFile.py
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#
# This class provides an object model for an input text file.
#
# Author: Darrell O. Ricke, Ph.D. (mailto: [email protected])
# Copyright: Copyright (c) 2000 Darrell O. Ricke, Ph.D., Paragon Software
# License: GNU GPL license (http://www.gnu.org/licenses/gpl.html)
# Contact: Paragon Software, 1314 Viking Blvd., Cedar, MN 55011
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
###############################################################################
class InputFile:
#############################################################################
#
# Create an input text file object for the named file.
#
def initialize ( self ):
self.contents = "" # File contents as a string
self.lines = [] # File contents as an array of strings
self.file_name = "" # File name
self.end_of_file = False # Not end of file
self.line = "" # Current line
self.file = None # Input file
self.tokens = [] # Current line split by delimiter
#############################################################################
#
# Constructor.
#
def __init__ ( self ):
self.initialize () # initialize
#############################################################################
#
# Open the input text file.
#
def openFile ( self ):
try:
self.file = open ( self.file_name, "r", encoding="ascii", errors='ignore' ) # open the file for reading
except:
print("There is no file named ", self.file_name)
#############################################################################
#
# Close the input text file.
#
def closeFile ( self ):
self.file.close () # close the input file
#############################################################################
#
# Get the next line from the input text file.
#
def getLine ( self ):
return self.line # return the current line
#############################################################################
#
# Get the name of the input text file.
#
def getFileName ( self ):
return self.file_name
#############################################################################
#
# Get the end-of-file status of the input text file.
#
def isEndOfFile ( self ):
return self.end_of_file # return end of file flag
#############################################################################
#
# Set the name of the input text file.
#
def setFileName ( self, name ):
self.file_name = name
#############################################################################
#
# Get the next text line from the input text file.
#
def nextLine ( self ):
self.line = self.file.readline () # read in the next line
if ( self.line == "" ):
self.end_of_file = True
else:
self.line = self.line.rstrip()
return self.line # return the current line
#############################################################################
#
# Split the line by delimited, allow for double quotes.
#
def splitLine( self, delimiter ):
self.tokens = []
in_token = False
token = ""
for i in range(0, len(self.line)):
# Check for end of quoted token
if self.line[i] == '"':
if in_token:
in_token = False
else:
in_token = True
if self.line[i] == delimiter:
if in_token == False:
self.tokens.append( token )
token = ""
else:
token += self.line[i]
else:
if self.line[i] != '"':
token += self.line[i]
self.tokens.append( token )
return self.tokens # return the current tokens
#############################################################################
#
# Function to read in a text file as an array of strings.
#
def readArray( self ):
self.lines = []
while ( self.isEndOfFile() == 0 ):
self.nextLine()
if ( self.line != "" ):
self.lines.append( self.line )
return self.lines
#############################################################################
#
# Function to read in a text file as a single string.
#
def readText( self ):
self.contents = ""
while ( self.isEndOfFile() == 0 ):
self.nextLine()
if ( self.line != "" ):
self.contents += self.line
return self.contents
###############################################################################
#
# Testing module.
#
if ( __name__ == "__main__" ):
print("Start-----------------------------------------")
test = InputFile ()
test.setFileName ( "test.data" )
test.openFile ()
while ( test.isEndOfFile () == 0 ):
text = test.nextLine ()
if ( text != "" ):
print(text)
print("End-------------------------------------------")
test.closeFile ()