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* Update licence to have correct address
[bpgallery.git] / bpgallery.sh
diff --git a/bpgallery.sh b/bpgallery.sh
index 631582116c871e8a26e6cb4bd9bcb7db93288f4d..4f421c9f0116765f7f1a99b59ccfb4ecf427cab9 100755 (executable)
--- a/bpgallery.sh
+++ b/bpgallery.sh
@@ -1,25 +1,25 @@
 #!/usr/bin/env bash
 
 # bpgallery.sh - builds a simple 'gallery' from a collection of images
 #!/usr/bin/env bash
 
 # bpgallery.sh - builds a simple 'gallery' from a collection of images
-# Copyright (C) 2004 Brett Parker <iDunno@sommitrealweird.co.uk>
+# Copyright (C) 2004-2008 Brett Parker <iDunno@sommitrealweird.co.uk>
 #
 #
-# 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
+# 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.
 # 
 # (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
+# 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.
 # 
 # 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
+# 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.
 
 set -f
 
 
 set -f
 
-VERSION="1.0.2+arch"
+VERSION="1.1.3"
 
 function bpgallery_default_head() {
 cat <<END
 
 function bpgallery_default_head() {
 cat <<END
@@ -28,7 +28,7 @@ cat <<END
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
 <head>
        <title>${TITLE}</title>
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
 <head>
        <title>${TITLE}</title>
-       <link rel="stylesheet" href="style.css" type="text/css" />
+       <link rel="stylesheet" href="${BASEURL}style.css" type="text/css" />
 </head>
 <body>
 END
 </head>
 <body>
 END
@@ -52,7 +52,7 @@ else
        caption_alt=$caption
 fi
 cat << END
        caption_alt=$caption
 fi
 cat << END
-<div class="thumbnail"><a href="$filename"><img src="icons/$filename" alt="$caption_alt" /></a><div class="caption">$caption</div></div>
+<div class="thumbnail"><a href="$link"><img src="${ICONSDIRECTORY}/$filename" alt="$caption_alt" /></a><div class="caption">$caption</div></div>
 END
 }
 
 END
 }
 
@@ -80,8 +80,9 @@ div.thumbnail {
        float: left;
        padding: 20px;
        border: 0px;
        float: left;
        padding: 20px;
        border: 0px;
-       width: ${WIDTH}px;
+       width: ${MAXWIDTH}px;
        height: ${MAXHEIGHT}px;
        height: ${MAXHEIGHT}px;
+       text-align: center;
 }
 
 div.caption {
 }
 
 div.caption {
@@ -90,6 +91,22 @@ div.caption {
        font-weight: bold;
 }
 
        font-weight: bold;
 }
 
+div.navigation {
+       margin: 0;
+}
+
+div.navigation ul {
+       display: inline;
+       margin: 0;
+       padding: 0;
+       text-align: center;
+}
+
+div.navigation ul li {
+       display: inline;
+       margin: 2em;
+}
+
 a {
        border: 0px;
 }
 a {
        border: 0px;
 }
@@ -102,6 +119,46 @@ END
 
 declare -rf bpgallery_default_stylesheet
 
 
 declare -rf bpgallery_default_stylesheet
 
+function bpgallery_default_page() {
+       $BPGALLERY_HEAD_FUNCTION
+
+       linkstart=""
+       linkend=""
+
+       if [[ ! -z $linklocation ]]; then
+               linkstart="<a href='$linklocation'>"
+               linkend="</a>"
+       fi
+       
+       cat <<END
+<h1>${caption}</h1>
+<div class="navigation">
+       <ul>
+               <li><a href='${BASEURL}${INDEXDOCUMENT}'>Thumbnails</a></li>
+END
+       if [[ ! -z $previouspage ]]; then
+               $ECHOCOMMAND "<li><a href='${previouspage}'>Previous</a></li>"
+       else
+               $ECHOCOMMAND "<li>Previous</li>"
+       fi
+
+       if [[ ! -z $nextpage ]]; then
+               $ECHOCOMMAND "<li><a href='${nextpage}'>Next</a></li>"
+       else
+               $ECHOCOMMAND "<li>Next</li>"
+       fi
+cat <<END
+       </ul>
+</div>
+<div class="mainimage">
+       ${linkstart}<img src="${filename}" alt="${caption}" />${linkend}
+</div>
+END
+       $BPGALLERY_TAIL_FUNCTION
+}
+
+declare -rf bpgallery_default_page
+
 function bpgallery_escape_url() {
        temp=$1
        temp=${temp//\%/%25}
 function bpgallery_escape_url() {
        temp=$1
        temp=${temp//\%/%25}
@@ -120,6 +177,24 @@ function bpgallery_escape_url() {
        $ECHOCOMMAND $temp
 }
 
        $ECHOCOMMAND $temp
 }
 
+function bpgallery_cleanup_directory_name() {
+       temp=$1
+       temp=${temp//\%/_}
+       temp=${temp//:/_}
+       temp=${temp//;/_}
+       temp=${temp// /_}
+       temp=${temp//$/_}
+       temp=${temp//&/_}
+       temp=${temp//+/_}
+       temp=${temp//,/_}
+       temp=${temp//\//_}
+       temp=${temp//=/_}
+       temp=${temp//\?/_}
+       temp=${temp//@/_}
+       temp=${temp//\"/_}
+       $ECHOCOMMAND $temp
+}
+
 declare -rf bpgallery_escape_url
 
 if [[ ! -z ${BPGALLERY_THEME} ]] ; then
 declare -rf bpgallery_escape_url
 
 if [[ ! -z ${BPGALLERY_THEME} ]] ; then
@@ -150,7 +225,10 @@ if [[ -z ${BPGALLERY_THEME} ]]; then
        BPGALLERY_THEME=default
 fi
 
        BPGALLERY_THEME=default
 fi
 
-if [[ -e $HOME/.bpgallery.themes/${BPGALLERY_THEME} ]]; then
+if [[ ! -z ${BPGALLERY_THEME_DIR} ]] && \
+       [[ -e ${BPGALLERY_THEME_DIR}/${BPGALLERY_THEME} ]]; then
+       . ${BPGALLERY_THEME_DIR}/${BPGALLERY_THEME} 2>/dev/null
+elif [[ -e $HOME/.bpgallery.themes/${BPGALLERY_THEME} ]]; then
        . $HOME/.bpgallery.themes/${BPGALLERY_THEME} 2>/dev/null
 elif [[ -e /usr/local/etc/bpgallery/themes/${BPGALLERY_THEME} ]]; then
        . /usr/local/etc/bpgallery/themes/${BPGALLERY_THEME} 2>/dev/null
        . $HOME/.bpgallery.themes/${BPGALLERY_THEME} 2>/dev/null
 elif [[ -e /usr/local/etc/bpgallery/themes/${BPGALLERY_THEME} ]]; then
        . /usr/local/etc/bpgallery/themes/${BPGALLERY_THEME} 2>/dev/null
@@ -163,39 +241,140 @@ if [[ -z $TITLE ]]; then
 fi
 
 if [[ -z $CONVERTTOOL ]]; then
 fi
 
 if [[ -z $CONVERTTOOL ]]; then
-       CONVERTTOOL=convert
+       hash convert
+       if [[ $? != 0 ]]; then
+               echo "Can't find convert, exiting"
+               exit 3
+       fi
+       CONVERTTOOL=$(hash -t convert)
+else
+       if [[ ! -x $CONVERTTOOL ]]; then
+               echo "Can't find convert at location $CONVERTTOOL, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $FINDCOMMAND ]]; then
 fi
 
 if [[ -z $FINDCOMMAND ]]; then
-       FINDCOMMAND=find
+       hash find
+       if [[ $? != 0 ]]; then
+               echo "Can't find find, exiting"
+               exit 3
+       fi
+       FINDCOMMAND=$(hash -t find)
+else
+       if [[ ! -x $FINDCOMMAND ]]; then
+               echo "Can't find find at $FINDCOMMAND, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $XARGSCOMMAND ]]; then
 fi
 
 if [[ -z $XARGSCOMMAND ]]; then
-       XARGSCOMMAND=xargs
+       hash xargs
+       if [[ $? != 0 ]]; then
+               echo "Can't find xargs, exiting"
+               exit 3
+       fi
+       XARGSCOMMAND=$(hash -t xargs)
+else
+       if [[ ! -x $XARGSCOMMAND ]]; then
+               echo "Can't find xargs at $XARGSCOMMAND, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $ECHOCOMMAND ]]; then
        ECHOCOMMAND=echo
 fi
 
 if [[ -z $ECHOCOMMAND ]]; then
        ECHOCOMMAND=echo
+else
+       if [[ ! -x $ECHOCOMMAND ]]; then
+               echo "Can't find echo at $ECHOCOMMAND, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $SORTCOMMAND ]]; then
 fi
 
 if [[ -z $SORTCOMMAND ]]; then
-       SORTCOMMAND=sort
+       hash sort
+       if [[ $? != 0 ]]; then
+               echo "Can't find sort, exiting"
+               exit 3
+       fi
+       SORTCOMMAND=$(hash -t sort)
+else
+       if [[ ! -x $SORTCOMMAND ]]; then
+               echo "Can't find sort, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $IDENTIFYCOMMAND ]]; then
 fi
 
 if [[ -z $IDENTIFYCOMMAND ]]; then
-       IDENTIFYCOMMAND=identify
+       hash identify
+       if [[ $? != 0 ]]; then
+               echo "Can't find indentify, exiting"
+               exit 3
+       fi
+       IDENTIFYCOMMAND=$(hash -t identify)
+else
+       if [[ ! -x $IDENTIFYCOMMAND ]]; then
+               echo "Can't find identify at $IDENTIFYCOMMAND, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $HEADCOMMAND ]]; then
 fi
 
 if [[ -z $HEADCOMMAND ]]; then
-       HEADCOMMAND=head
+       hash head
+       if [[ $? != 0 ]]; then
+               echo "Can't find head, exiting"
+               exit 3
+       fi
+       HEADCOMMAND=$(hash -t head)
+else
+       if [[ ! -x $HEADCOMMAND ]]; then
+               echo "Can't find head at $HEADCOMMAND, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $GREPCOMMAND ]]; then
 fi
 
 if [[ -z $GREPCOMMAND ]]; then
-       GREPCOMMAND=grep
+       hash grep
+       if [[ $? != 0 ]]; then
+               echo "Can't find grep, exiting"
+               exit 3
+       fi
+       GREPCOMMAND=$(hash -t grep)
+else
+       if [[ ! -x $GREPCOMMAND ]]; then
+               echo "Can't find grep at $GREPCOMMAND, exiting"
+               exit 3
+       fi
 fi
 
 if [[ -z $SEDCOMMAND ]]; then
 fi
 
 if [[ -z $SEDCOMMAND ]]; then
-       SEDCOMMAND=sed
+       hash sed
+       if [[ $? != 0 ]]; then
+               echo "Can't find sed, exiting"
+               exit 3
+       fi
+       SEDCOMMAND=$(hash -t sed)
+else
+       if [[ ! -x $SEDCOMMAND ]]; then
+               echo "Can't find sed at $SEDCOMMAND, exiting"
+               exit 3
+       fi
+fi
+
+if [[ -z $WCCOMMAND ]]; then
+       hash wc
+       if [[ $? != 0 ]]; then
+               echo "Can't find wc, exiting"
+               exit 3
+       fi
+       WCCOMMAND=$(hash -t wc)
+       WCCOMMAND="$WCCOMMAND -l"
+else
+       if [[ ! -x $WCCOMMAND ]]; then
+               echo "Can't find wc at $WCCOMMAND, exiting"
+               exit 3
+       fi
+       WCCOMMAND="$WCCOMMAND -l"
 fi
 
 if [[ -z $WIDTH ]]; then
 fi
 
 if [[ -z $WIDTH ]]; then
@@ -206,14 +385,62 @@ if [[ -z $IMAGEEXTENSIONS ]]; then
        IMAGEEXTENSIONS="jpeg jpg gif png";
 fi
 
        IMAGEEXTENSIONS="jpeg jpg gif png";
 fi
 
-if [[ -z $WCCOMMAND ]]; then
-       WCCOMMAND="wc -l"
-fi
-
 if [[ -z $CAPTIONHEIGHT ]]; then
        CAPTIONHEIGHT=75
 fi
 
 if [[ -z $CAPTIONHEIGHT ]]; then
        CAPTIONHEIGHT=75
 fi
 
+if [[ -z $OUTPUTHTML ]]; then
+       OUTPUTHTML=0
+fi
+
+if [[ -z $GENERATEPAGESFORFULLSIZE ]]; then
+       GENERATEPAGESFORFULLSIZE=0
+fi
+
+if [[ -z $GENERATEPAGESFORMEDIUMSIZE ]]; then
+       GENERATEPAGESFORMEDIUMSIZE=1
+fi
+
+if [[ -z $PAGESDIRECTORY ]]; then
+       PAGESDIRECTORY=""
+else
+       removetrailingslashes=${PAGESDIRECTORY%/}
+       temp=$removetrailingslashes
+       while [[ $removetrailingslashes != $temp ]]; do
+               temp=$removetrailingslashes
+               removetrailingslashes=${temp%/}
+       done
+       PAGESDIRECTORY=$(bpgallery_escape_url "${PAGESDIRECTORY}")
+fi
+
+if [[ -z $MEDIUMWIDTH ]]; then
+       MEDIUMWIDTH=400
+fi
+
+if [[ -z $INDEXDOCUMENT ]]; then
+       INDEXDOCUMENT=index.html
+fi
+
+if [[ -z $MEDIUMDIRECTORY ]]; then
+       MEDIUMDIRECTORY=medium
+else
+       # Strip out anything that might be broken
+       MEDIUMDIRECTORY=$(bpgallery_cleanup_directory_name "$MEDIUMDIRECTORY")
+fi
+
+if [[ -z $ICONSDIRECTORY ]]; then
+       ICONSDIRECTORY=icons
+else
+       # Strip out anything that might be broken
+       ICONSDIRECTORY=$(bpgallery_cleanup_directory_name "$ICONSDIRECTORY")
+fi
+
+if declare -F "bpgallery_${BPGALLERY_THEME}_page" > /dev/null ; then
+       BPGALLERY_PAGE_FUNCTION="bpgallery_${BPGALLERY_THEME}_page"
+else
+       BPGALLERY_PAGE_FUNCTION="bpgallery_default_page"
+fi
+
 if declare -F "bpgallery_${BPGALLERY_THEME}_head" > /dev/null ; then
        BPGALLERY_HEAD_FUNCTION="bpgallery_${BPGALLERY_THEME}_head"
 else
 if declare -F "bpgallery_${BPGALLERY_THEME}_head" > /dev/null ; then
        BPGALLERY_HEAD_FUNCTION="bpgallery_${BPGALLERY_THEME}_head"
 else
@@ -262,7 +489,46 @@ Usage:
         displays this help screen
     --version
         displays the version and exits
         displays this help screen
     --version
         displays the version and exits
-       
+
+This can also takes some environment variables, these will use defaults if not
+set.
+
+        TITLE
+            the title of the gallery
+
+        WIDTH
+            the width to make the icons
+
+        HEIGHT
+            the height to make the icons (sets up a bounding box with WIDTH)
+
+        MEDIUMWIDTH
+            set the width of images in the medium size pages
+
+        MEDIUMHEIGHT
+            the height to make images in the medium size pages (sets up a
+            bounding box with MEDIUMWIDTH)
+
+        BPGALLERY_THEME
+            set the theme to use (described below)
+
+        BPGALLERY_THEME_DIR
+            set an extra location to look for themes
+
+        OUTPUTHTML
+            sets the script output to be wrapped in a <pre> block
+
+        GENERATEPAGESFORMEDIUMSIZE
+            generate medium sized images and pages
+
+        GENERATEPAGESFORFULLSIZE
+            decide wether to generate pages for the full size images or not
+
+        INDEXDOCUMENT
+            name of the index page (e.g. index.html)
+
+Example:
+       TITLE="My Funky Gallery" WIDTH=200 INDEXDOCUMENT="welcome.html" GENERATEPAGESFORFULLSIZE=1 GENERATEPAGESFORMEDIUMSIZE=1 MEDIUMWIDTH=400 $0 /path/to/image/folder
 END
 }
 
 END
 }
 
@@ -272,26 +538,250 @@ Version: $VERSION
 END
 }
 
 END
 }
 
-function generate_thumbs() {
-       $ECHOCOMMAND "Generating Thumbnails"
+function check_dimensions() {
+       wantedwidth=$1
+       wantedheight=$2
+       dir=$3
+       filename=$4
+       iconwidth=$($IDENTIFYCOMMAND -format "%wx%h" "$dir/$filename")
+       iconheight=${iconwidth//*x}
+       iconwidth=${iconwidth//x*}
+       # are the dimensions correctish?
+       imagesizeright=1
+       if [ ! -z $wantedheight ]; then
+               if [ $wantedwidth -ne $iconwidth ] && [ $wantedheight -ne $iconheight ]; then
+                       imagesizeright=0
+               else
+                       # make sure that both of the dimensions are smaller than they
+                       # should be
+                       if [ $iconwidth -gt $wantedwidth ] || [ $iconheight -gt $wantedheight ]; then
+                               imagesizeright=0
+                       fi
+               fi
+       else
+               if [ $wantedwidth -ne $iconwidth ]; then
+                       imagesizeright=0
+               fi
+       fi
+       echo $imagesizeright
+}
+
+function generate_resized_images() {
+       $ECHOCOMMAND "Generating $2"
+       width=$1
+       height=${width//*x}
+       if [ $width != $height ]; then
+               width=${width//x*}
+       else
+               height=""
+       fi
        currentimage=0
        currentimage=0
-       totalimages=$($FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 --replace $ECHOCOMMAND {} | $WCCOMMAND);
-       imagestoupdate=$($FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 --replace $ECHOCOMMAND {} | while read filename; do filename=${filename//\"/\\\"}; if [ ! -r "icons/$filename" ] || [ "$filename" -nt "icons/$filename" ] || [ $($IDENTIFYCOMMAND -format "%w" "icons/$filename") -ne $WIDTH ]; then $ECHOCOMMAND $filename; fi; done | $WCCOMMAND)
+       totalimages=$($FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 -I {} $ECHOCOMMAND {} | $WCCOMMAND);
+       imagestoupdate=$($FINDCOMMAND . $FINDIMAGESOPTIONS |
+               $XARGSCOMMAND -0 -I {} $ECHOCOMMAND {} |
+               while read filename; do
+                       filename=${filename//\"/\\\"}
+                       imagesizeright=$(check_dimensions "$width" "$height" "$2" "$filename")
+                       if [ ! -r "$2/$filename" ] ||
+                               [ "$filename" -nt "$2/$filename" ] ||
+                               [ $imagesizeright -ne 1 ]; then
+                               $ECHOCOMMAND $filename
+                       fi
+               done |
+               $WCCOMMAND)
        
        
+       if [ $totalimages -eq 0 ]; then
+               # might as well exit at this point - there are no pictures
+               $ECHOCOMMAND "No images for the gallery - exiting."
+               exit 64
+       else
+               # check if the directory exists and create it other wise
+               if [ ! -d $2 ]; then
+                       mkdir $2
+               fi
+
+               if [ ! -w $2 ]; then
+                       $ECHOCOMMAND "Can't write to $2 directory, exiting"
+                       exit 16
+               fi
+       fi
+
        if [ $totalimages -eq $imagestoupdate ]; then
        if [ $totalimages -eq $imagestoupdate ]; then
-               $ECHOCOMMAND "Regenerating all thumbnails"
+               $ECHOCOMMAND "Regenerating all $2"
        elif [ $imagestoupdate -eq 0 ]; then
        elif [ $imagestoupdate -eq 0 ]; then
-               $ECHOCOMMAND "No Updated Thumbs, not regenerating"
+               $ECHOCOMMAND "No Updated $2, not regenerating"
                return
        else
                return
        else
-               $ECHOCOMMAND "Generating $imagestoupdate of $totalimages thumbnails"
+               $ECHOCOMMAND "Generating $imagestoupdate of $totalimages $2"
        fi
        
        fi
        
-       $FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 --replace $ECHOCOMMAND {} | while read filename; do tempfilename=${filename//\"/\\\"/}; if [ ! -r "icons/$tempfilename" ] || [ "$tempfilename" -nt "icons/$tempfilename" ] || [ $($IDENTIFYCOMMAND -format "%w" "icons/$filename") -ne $WIDTH ]; then $ECHOCOMMAND -n $filename; $ECHOCOMMAND -n -e "\000"; fi; done | $XARGSCOMMAND -0 --verbose --max-procs=4 --replace $CONVERTTOOL -resize $WIDTH '{}' 'icons/{}' 2>&1 | while read throwout; do $ECHOCOMMAND done: $currentimage/$imagestoupdate images; currentimage=$((currentimage+1)); done
+       $FINDCOMMAND . $FINDIMAGESOPTIONS | \
+               $XARGSCOMMAND -0 -I {} $ECHOCOMMAND {} | \
+               while read filename; do 
+                       tempfilename=${filename//\"/\\\"/}; 
+                       imagesizeright=$(check_dimensions "$width" "$height" "$2" "$filename")
+                       if [ ! -r "$2/$tempfilename" ] \
+                               || [ "$tempfilename" -nt "$2/$tempfilename" ] \
+                               || [ $imagesizeright -ne 1 ]; then 
+                                       $ECHOCOMMAND -n $filename
+                                       $ECHOCOMMAND -n -e "\000"
+                       fi
+               done | \
+               $XARGSCOMMAND -0 --verbose --max-procs=4 -I {} $CONVERTTOOL -resize $1 '{}' $2/'{}' 2>&1 | \
+                       while read throwout; do
+                               $ECHOCOMMAND done: $currentimage/$imagestoupdate images
+                               currentimage=$((currentimage+1))
+                       done
        $ECHOCOMMAND done: $imagestoupdate/$imagestoupdate images
        $ECHOCOMMAND done: $imagestoupdate/$imagestoupdate images
-       $ECHOCOMMAND "Completed generating thumbs for $totalimages images"
+       $ECHOCOMMAND "Completed generating $2 for $totalimages images"
 }
 
 }
 
+function generate_thumbs() {
+       if [ ! -z $HEIGHT ]; then
+               generate_resized_images "${WIDTH}x${HEIGHT}" $ICONSDIRECTORY
+       else
+       generate_resized_images $WIDTH $ICONSDIRECTORY
+       fi
+}
+
+function generate_medium() {
+       if [ ! -z $MEDIUMHEIGHT ]; then
+               generate_resized_images "${MEDIUMWIDTH}x${MEDIUMHEIGHT}" $MEDIUMDIRECTORY
+       else
+               generate_resized_images $MEDIUMWIDTH $MEDIUMDIRECTORY
+       fi
+}
+
+function generate_pages() {
+       $ECHOCOMMAND "Generating Pages"
+       previouspage=""
+       currentpage=""
+       nextpage=""
+       previousimage=""
+       currentimage=""
+       nextimage=""
+       extra=""
+       extradir=""
+       addlinks=0
+       
+       if [ ! -z $1 ]; then
+               extra=$1
+       fi
+
+       if [ ! -z $2 ]; then
+               extradir=$2/
+               addlinks=1
+       fi
+
+       if [ -z $2 ] && [[ $GENERATEPAGESFORMEDIUMSIZE != 0 ]]; then
+               addlinks=2
+       fi
+       
+       $FINDCOMMAND . $FINDIMAGESOPTIONS | \
+       $XARGSCOMMAND -0 -I {} $ECHOCOMMAND {} | \
+       $SORTCOMMAND -g | \
+       while read imagefilename; do
+               previousimage=$currentimage
+               currentimage=$nextimage
+               nextimage=${imagefilename#./}
+               addlink=""
+               
+               if [[ $GENERATEPAGESFORFULLSIZE != 0 ]]; then
+                       if [[ $addlinks == 1 ]]; then
+                               addlink=${currentimage}.html
+                       else
+                               addlink=${currentimage}${extra}.html
+                       fi
+               else
+                       addlink=${currentimage}
+               fi
+
+               previouspage=$currentpage
+               currentpage=$nextpage
+               if [[ $addlinks == 1 ]]; then
+                       nextpage=${nextimage}${extra}.html
+               else
+                       nextpage=${nextimage}.html
+               fi
+
+               if [[ "x$PAGESDIRECTORY" != "x" ]]; then
+                       filename=../${extradir}${currentimage}
+               else
+                       filename=${extradir}${currentimage}
+               fi
+               if [ "x$currentpage" != "x" ]; then
+                       generate_general_page "$previouspage" "$currentpage" "$nextpage" $addlink
+               fi
+               $ECHOCOMMAND $nextimage
+       done | tail -n 2 | (
+               read previouspage
+               read currentpage
+               addlink=""
+
+               if [[ $GENERATEPAGESFORFULLSIZE != 0 ]]; then
+                       if [[ $addlinks == 1 ]]; then
+                               addlink=${currentpage}.html
+                       else
+                               addlink=${currentpage}${extra}.html
+                       fi
+               else
+                       addlink=${currentpage}
+               fi
+               
+               if [[ "x$PAGESDIRECTORY" != "x" ]]; then
+                       filename=../${extradir}${currentpage}
+               else
+                       filename=${extradir}${currentpage}
+               fi
+               if [[ $addlinks == 1 ]]; then
+                       currentpage=${currentpage}${extra}.html
+                       previouspage=${previouspage}${extra}.html
+               else
+                       currentpage=${currentpage}.html
+                       previouspage=${previouspage}.html
+               fi
+               nextpage=""
+               generate_general_page "$previouspage" "$currentpage" "" $addlink
+       )
+}
+
+function generate_medium_pages() {
+       generate_pages __${MEDIUMDIRECTORY} ${MEDIUMDIRECTORY}
+}
+
+function generate_general_page() {
+
+       if [[ -z $1 ]]; then
+               previouspage=""
+       fi
+
+       if [[ -z $2 ]]; then
+               currentpage=""
+               return
+       fi
+
+       if [[ -z $3 ]]; then
+               nextpage=""
+       fi
+
+       if [[ ! -z $4 ]]; then
+               linklocation=$4
+       fi
+
+       if [ -r captions.txt ]; then
+               imagefilename=${filename##*/}
+               caption=$($GREPCOMMAND -E "^${imagefilename}    " captions.txt); caption=${caption#*    }
+       else
+               caption=""
+       fi
+       
+       $BPGALLERY_PAGE_FUNCTION > "${UNIXPAGESDIRECTORY}$currentpage"
+}
+
+if [[ $OUTPUTHTML != 0 ]]; then
+       $ECHOCOMMAND "<pre>"
+fi
+
 if [[ -z $1 ]]; then
        $ECHOCOMMAND "No path given"
        usage
 if [[ -z $1 ]]; then
        $ECHOCOMMAND "No path given"
        usage
@@ -321,33 +811,81 @@ if ( ! $FINDCOMMAND . $FINDIMAGESOPTIONS > /dev/null 2>/dev/null ); then
        exit 4
 fi
 
        exit 4
 fi
 
-if [ ! -d icons ]; then
-       mkdir icons
+if [ ! -w . ]; then
+       $ECHOCOMMAND "Can't write to images directory, exiting"
+       exit 8
+fi
+
+if [ -e ${INDEXDOCUMENT} ] && [ ! -w ${INDEXDOCUMENT} ]; then
+       $ECHOCOMMAND "Can't write ${INDEXDOCUMENT}, exiting"
+       exit 8
+fi
+
+if [ -e style.css ] && [ ! -w style.css ]; then
+       $ECHOCOMMAND "Can't write style.css, exiting"
+       exit 8
 fi
 
 generate_thumbs
 
 fi
 
 generate_thumbs
 
+if [[ "x$PAGESDIRECTORY" != "x" ]]; then
+       if [ ! -d $PAGESDIRECTORY ]; then
+               mkdir -p $PAGESDIRECTORY
+       fi
+
+       if [ ! -w $PAGESDIRECTORY ]; then
+               $ECHOCOMMAND "Can't write to $PAGESDIRECTORY directory, exiting"
+               exit 16
+       fi
+       UNIXPAGESDIRECTORY=$PAGESDIRECTORY/     
+       PAGESDIRECTORY=$(bpgallery_escape_url $PAGESDIRECTORY)/
+
+       BASEURL="../"
+else
+       BASEURL=""
+       UNIXPAGESDIRECTORY=""
+fi
+
+if [ $GENERATEPAGESFORMEDIUMSIZE != 0 ]; then
+       generate_medium
+       generate_medium_pages
+fi
+
+if [ $GENERATEPAGESFORFULLSIZE != 0 ]; then
+       if [ $GENERATEPAGESFORMEDIUMSIZE != 0 ]; then
+               generate_pages __${MEDIUMDIRECTORY}
+       else
+               generate_pages
+       fi
+fi
+
 if [ -r description.txt ] ; then
        DESCRIPTION=$($SEDCOMMAND -e '1 { s/^/<p>/; }; /^$/ { s,$,</p><p>,; }; $ { s,$,</p>, };' description.txt)
 else
        DESCRIPTION=""
 fi
 
 if [ -r description.txt ] ; then
        DESCRIPTION=$($SEDCOMMAND -e '1 { s/^/<p>/; }; /^$/ { s,$,</p><p>,; }; $ { s,$,</p>, };' description.txt)
 else
        DESCRIPTION=""
 fi
 
+BASEURL=""
 
 $ECHOCOMMAND "Starting to generate page"
 
 
 $ECHOCOMMAND "Starting to generate page"
 
-$BPGALLERY_HEAD_FUNCTION > index.html
-$BPGALLERY_DESCRIPTION_FUNCTION >> index.html
+$BPGALLERY_HEAD_FUNCTION > ${INDEXDOCUMENT}
+$BPGALLERY_DESCRIPTION_FUNCTION >> ${INDEXDOCUMENT}
 
 $ECHOCOMMAND "Adding Captions"
 
 
 $ECHOCOMMAND "Adding Captions"
 
-$FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 --replace $ECHOCOMMAND {} |$SORTCOMMAND -g | while read filename; do filename=${filename#./}; if [ -r captions.txt ]; then caption=$($GREPCOMMAND -E "^$filename  " captions.txt); caption=${caption#*    }; else caption=""; fi; filename=$(bpgallery_escape_url "$filename"); $BPGALLERY_THUMBSLINE_FUNCTION; done >> index.html
+extra=""
+if [ $GENERATEPAGESFORMEDIUMSIZE != 0 ]; then
+       extra=__${MEDIUMDIRECTORY}
+fi
+
+$FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 -I {} $ECHOCOMMAND {} | $SORTCOMMAND -g | while read filename; do filename=${filename#./}; if [ -r captions.txt ]; then caption=$($GREPCOMMAND -E "^$filename     " captions.txt); caption=${caption#*    }; else caption=""; fi; if [ $GENERATEPAGESFORMEDIUMSIZE != 0 ]; then link=${PAGESDIRECTORY}$(bpgallery_escape_url "${filename}${extra}.html"); elif [ $GENERATEPAGESFORFULLSIZE != 0 ]; then link=${PAGESDIRECTORY}$(bpgallery_escape_url "${filename}.html"); else link=$(bpgallery_escape_url "$filename"); fi; filename=$(bpgallery_escape_url "$filename"); $BPGALLERY_THUMBSLINE_FUNCTION; done >> ${INDEXDOCUMENT}
 
 
-$BPGALLERY_TAIL_FUNCTION >> index.html
+$BPGALLERY_TAIL_FUNCTION >> ${INDEXDOCUMENT}
 
 $ECHOCOMMAND "Finished generating the page"
 $ECHOCOMMAND "Generating stylesheet"
 
 $ECHOCOMMAND "Finished generating the page"
 $ECHOCOMMAND "Generating stylesheet"
-cd icons
+cd $ICONSDIRECTORY
 
 MAXHEIGHT=$($FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 $IDENTIFYCOMMAND -format "%h\n" | $GREPCOMMAND -v "^$" | $SORTCOMMAND -g -r | $HEADCOMMAND -n 1)
 MAXWIDTH=$($FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 $IDENTIFYCOMMAND -format "%w\n" | $GREPCOMMAND -v "^$" | $SORTCOMMAND -g -r | $HEADCOMMAND -n 1)
 
 MAXHEIGHT=$($FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 $IDENTIFYCOMMAND -format "%h\n" | $GREPCOMMAND -v "^$" | $SORTCOMMAND -g -r | $HEADCOMMAND -n 1)
 MAXWIDTH=$($FINDCOMMAND . $FINDIMAGESOPTIONS | $XARGSCOMMAND -0 $IDENTIFYCOMMAND -format "%w\n" | $GREPCOMMAND -v "^$" | $SORTCOMMAND -g -r | $HEADCOMMAND -n 1)
@@ -360,3 +898,7 @@ MAXHEIGHT=$((MAXHEIGHT+$CAPTIONHEIGHT))
 $BPGALLERY_STYLESHEET_FUNCTION > style.css
 
 $ECHOCOMMAND "All done"
 $BPGALLERY_STYLESHEET_FUNCTION > style.css
 
 $ECHOCOMMAND "All done"
+
+if [[ $OUTPUTHTML != 0 ]]; then
+       $ECHOCOMMAND "</pre>"
+fi
A simple gallery script in bash