Initial class construction

Git/usr/bin/docx2txt

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+#!/usr/bin/env bash
+
+# docx2txt, a command-line utility to convert Docx documents to text format.
+# Copyright (C) 2008 Sandeep Kumar
+#
+# 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+#
+# A simple .docx to .txt converter
+#
+# This script is a wrapper around core docx2txt.pl and saves text output for
+# (filename or) filename.docx in filename.txt .
+#
+# Author : Sandeep Kumar (shimple0 -AT- Yahoo .DOT. COM)
+#
+# ChangeLog :
+#
+#    10/08/2008 - Initial version (v0.1)
+#    15/08/2008 - Invoking docx2txt.pl with docx document instead of xml file,
+#                 so don't need unzip and rm actions now.
+#                 Removed dependency on sed for generating output filename.
+#    23/09/2008 - Changed #! line to use /usr/bin/env - good suggestion from
+#                 Rene Maroufi (info>AT<maroufi>DOT<net) to reduce user work
+#                 during installation.
+#    15/09/2009 - Added support for directory (holding unzipped content of
+#                 .docx file) argument to keep it's usage in sync with main
+#                 docx2txt.pl script.
+#                 Fixed bug in condition check for input file accessibility.
+#    25/11/2009 - Fixed bug in set expression that was resulting in incorrect
+#                 handling of file/directory names containing spaces.
+#
+
+
+MYLOC=`dirname "$0"`	# invoked perl script docx2txt.pl is expected here.
+
+function usage ()
+{
+    cat << _USAGE_
+
+Usage : $0 <file.docx>
+
+	<file.docx> can also specify a directory holding the unzipped
+	content of a .docx file.
+
+_USAGE_
+
+    exit 1
+}
+
+[ $# != 1 ] && usage
+
+#
+# Remove trailing '/'s if any, when input specifies a directory.
+#
+shopt -s extglob
+set "${1%%+(/)}"
+
+if [ -d "$1" ]
+then
+    if ! [ -r "$1" -a -x "$1" ]
+    then
+        echo -e "\nCan't access/read input directory <$1>!\n"
+        exit 1
+    fi
+elif ! [ -f "$1" -a -r "$1" -a -s "$1" ]
+then
+    echo -e "\nCheck if <$1> exists, is readable and has non-zero size!\n"
+    exit 1
+fi
+
+
+TEXTFILE=${1/%.docx/.txt}
+[ "$1" == "$TEXTFILE" ] && TEXTFILE="$1.txt" 
+
+
+#
+# $1 : filename to check for existence
+# $2 : message regarding file
+#
+function check_for_existence ()
+{
+    if [ -f "$1" ]
+    then
+        read -p "overwrite $2 <$1> [y/n] ? " yn
+        if [ "$yn" != "y" ]
+        then
+            echo -e "\nPlease copy <$1> somewhere before running the script.\n"
+            echeck=1
+        fi
+    fi
+}
+
+echeck=0
+check_for_existence "$TEXTFILE" "Output text file"
+[ $echeck -ne 0 ] && exit 1
+
+#
+# Invoke perl script to do the actual text extraction
+#
+
+"$MYLOC/docx2txt.pl" "$1" "$TEXTFILE"
+if [ $? == 0 ]
+then
+    echo -e "\nText extracted from <$1> is available in <$TEXTFILE>.\n"
+else
+    echo -e "\nFailed to extract text from <$1>!\n"
+fi
+