#! python:
#w#VIC redirect.py module
#
# Copyright 2002, 2003 by Timothy Rue <3seas@threeseas.net>
#
# VIC redirect.py module: version 0.5.1.python (BETA)
#
#
# 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 version 2
# of the License. http://www.gnu.org/copyleft/gpl.html
#
# 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.
# Or access http://www.gnu.org/copyleft/gpl.html
##########################################################################
#August 29, 2003 made file IQ parseable 0.5.1
#July 24, 2003 initial release 0.5
#
##########################################################################
#s#system modules
import string

#s#def getAnyRedirection
###
### If we have a command like "cat < Doco/foo.txt"
### Could also have something like "cat < Doco/foo.txt > output.txt"
### read the content of the redirected input file (Doco/foo.txt)
### Otherwise return ""
###
def getAnyRedirections(command_list):
    redirected_stdin = ""
    redirected_stdout_filename = ""
    output_command_list = []
    error = 0
    error_near = ""
    append = 0
    for j in range(len(command_list)):
        command = command_list[j]
        if (string.count(command,">>") > 0):
            command,redirected_stdout_filename = string.split(command,">>",1)
            redirected_stdout_filename = string.strip(redirected_stdout_filename)
            try:
                infile = open(redirected_stdout_filename,"a")
                infile.close()
            except:
                error = 1
                error_near = "Error appending to '"+redirected_stdout_filename+"'"
            append = 1
        elif (string.count(command,">") > 0):
            command,redirected_stdout_filename = string.split(command,">",1)
            redirected_stdout_filename = string.strip(redirected_stdout_filename)
            try:
                infile = open(redirected_stdout_filename,"w")
                infile.close()
            except:
                error = 1
                error_near = "Error writing to '"+redirected_stdout_filename+"'"
        elif (string.count(command,"<") > 0):
            command,infilename = string.split(command,"<",1)
            infilename = string.strip(infilename)
            try:
                infile = open(infilename,"r")
                redirected_stdin = infile.read()
                infile.close
            except:
                error = 1
                error_near = "Error reading '"+infilename+"'"

        if (string.strip(command) != ""):
            output_command_list.append(command)

    return output_command_list,redirected_stdin,redirected_stdout_filename,append,error,error_near