#! /bin/bash # Last edited on 2010-07-08 18:39:06 by stolfilocal usage="$0 [-original] [-absentOK] [-iconHeight NN] TITLE" # Creates an index page "index.html" or "index-orig.html" for computer # graphics homework hand-ins. This version is specialized for still # images. # # Reads files # # rausrs.txt : login names and RA numbers of all registered students # aus.txt : RA numbers of absentees # intro.html (if present) : blurb to be included in page, before results. # # Rejects input from absentee students, unless "-absentOK" is given. # For each non-absentee student, expects to find files # # ${ra}/main.pov - Main POV-ray file (edited by instructor) # ${ra}/main.png - GIF image. # # The above files are the versions that were edited and/or rebuilt # by the teacher. The original version of file "{FOO}.{BAR}", # as turned in by the student, is assumed to be "{FOO}-orig.{BAR}". # However, the original image may have extension ".gif" or ".jpg" # instead of ".png". # # If "-original" is given, makes an index "index-orig.html" for the # "-orig" versions instead of the edited/rebuilt versions. # # The thumbnail version of file "{FOO}.{BAR}" or "{FOO}-orig.{BAR}" # is created, if needed, with name "{FOO}-i.png" "{FOO}-orig-i.png". export PATH=".:tools:../tools:../../tools:../../../tools:../../../../tools:${PATH}" # Name suffixes and button labels for "hot" and alternate versions: hotsuf=""; hottxt="novo" altsuf="-orig"; alttxt="orig" # Options for {process-absentees}: absentopt=( ) # Default icon height (pixels): iconHeight=60 # TRUE if the derived files should be rebuilt as needed: rebuild=1 while [[ ( $# -gt 0 ) && ( "/${1:0:1}" == "/-" ) ]]; do if [[ ( $# -ge 1 ) && ( "/$1" == "/-absentOK" ) ]]; then absentopt=( "-absentOK" ); shift; elif [[ ( $# -ge 1 ) && ( "/$1" == "/-original" ) ]]; then hotsuf="-orig"; hottxt="orig"; altsuf=""; alttxt="novo"; rebuild=0; shift; elif [[ ( $# -ge 2 ) && ( "/$1" == "/-iconHeight" ) ]]; then iconHeight="$2"; shift; shift; else echo "bad option: $1" 1>&2; echo "usage: ${usage}" 1>&2; exit 1 fi done if [[ $# != 1 ]]; then echo "usage: ${usage}" 1>&2; exit 1 fi title="$1"; shift; rafile="rausrs.txt" abfile="aus.txt" hdrfile="intro.html" htmfile="index${hotsuf}.html" # Names of hot and alternate image files to be shown (minus extension): imgname="main${hotsuf}" altimgname="main${altsuf}" # Remove files of absentees and provide "absent" picture for them: if [[ -r ${abfile} ]]; then process-absentees ${absentopt[@]} `cat ${abfile} | egrep -v '^ *([#]|$)'` fi # Save old version of index page if [[ -s ${htmfile} ]]; then /bin/mv ${htmfile} ${htmfile}~ fi # Write index page header: cat <> ${htmfile} ${title} (${hottxt})

${title} (${hottxt})

`[${alttxt}>`

EOF # Copy preformatted prologue: if [[ -r ${hdrfile} ]]; then cat ${hdrfile} >> ${htmfile} fi # Get numbers of all registered students: ras=( `cat ${rafile} | egrep -v '^ *([#]|$)' | gawk '//{print $2;}'` ) cat <> ${htmfile}

EOF # Number of icons in current row: n=0 for ra in ${ras[@]} ; do # Define, for student ${ra}: # # ${povfile} = file name of "hot" source file. # ${altpovfile} = file name of alternate source file. # ${imgfile} = file name of the full "hot" image. # ${iconfile} = file name of the iconic version of the "hot" image. # ${altimgfile} = file name of the alternate image. # # ${imgbutt} = the HTML fragment of the image button. # ${altimgbutt} = the HTML fragment of the alternate image button. # ${povbutt} = the HTML fragment of the source button. echo "=== ${ra} ====================================" 1>&2 povfile="${ra}/main${hotsuf}.pov" altpovfile="${ra}/main${altsuf}.pov" if [[ ! ( -d ${ra} ) ]]; then # non-existant directory: echo "*** ${ra} missing or not directory" 1>&2 povbutt="[荺" imgbutt="[荺" altimgbutt="[荺" imgfile="missing.png" altimgfile="missing.png" iconfile="missing-i.png" elif [[ -r ${ra}/.absent ]]; then # Absentee student: povbutt="[荺" imgbutt="[荺" altimgbutt="[荺" imgfile="absent.png" altimgfile="absent.png" iconfile="absent-i.png" # Ckeck if the POV-ray source exists, just for safety: if [[ -r ${povfile} ]]; then echo "*** ${ra}/.absent and ${povfile} both present" 1>&2; exit 1 elif [[ -r ${altpovfile} ]]; then echo "*** ${ra}/.absent and ${altpovfile} both present" 1>&2; exit 1 fi else # Ckeck whether the POV-ray source exists: if [[ -r ${povfile} ]]; then povbutt='[fonte]' else povbutt="[荺" fi # Get file name ${imgfile} of the "hot" image: if [[ ${rebuild} -ne 0 ]]; then # The image name is fixed: imgfile="${ra}/${imgname}.png" # Delete it if empty: if [[ -r ${imgfile} ]]; then if [[ ! ( -s ${imgfile} ) ]]; then echo "*** File ${imgfile} is empty, deleting it" 1>&2 /bin/rm -f ${imgfile} fi fi # Try to rebuild it if needed: if [[ -r ${povfile} ]]; then # (Re)build image if necessary: if [[ ! ( -s ${imgfile} ) ]]; then echo "=== image ${imgfile} missing or empty, (re)building it ===" 1>&2 ( cd ${ra} && make ${imgfile:t} ; echo " " ) echo "=== done rebuilding ${imgfile} ===========================" 1>&2 fi else echo "*** File ${povfile} is missing, can't rebuild ${imgfile}" 1>&2 fi if [[ ! ( -s ${imgfile} ) ]]; then echo "*** File ${imgfile} is unreadable, missing, or empty" 1>&2 imgfile="missing.png" fi else # Look for existing image of some type, default "missing.png": imgfile="missing.png" for ext in png gif jpg ; do imgcand="${ra}/${imgname}.${ext}" # Delete candidate if empty: if [[ -r "${imgcand}" ]]; then if [[ ! ( -s ${imgcand} ) ]]; then echo "*** File ${imgcand} is empty, deleting it" 1>&2 /bin/rm -f ${imgcand} fi fi if [[ -s "${imgcand}" ]]; then imgfile="${imgcand}"; break fi done fi # If image exists, then get its icon, else use "missing-i.png": iconfile="${ra}/${imgname}-i.png" if [[ "${imgfile}" != "missing.png" ]]; then # Remove empty or outdated icon: if [[ -r ${iconfile} ]]; then if [[ ( ! ( -s ${iconfile} ) ) || ( ${imgfile} -nt ${iconfile} ) ]]; then /bin/rm -f ${iconfile} fi fi # Make sure that the corresponding icon does exist: if [[ ! ( -s ${iconfile} ) ]]; then echo "=== creating thumbnail image for ${imgfile} ===" 1>&2 convert ${imgfile} \ -geometry "x${iconHeight}" \ +profile '*' \ -colors 254 \ ${iconfile} fi imgbutt='[img]' else # Remove the corresponding icon, if any if [[ -r ${iconfile} ]]; then /bin/rm -f ${iconfile} fi # Use the "missing" image icon: iconfile="missing-i.png" imgbutt="[荺" fi # Get alternate image file, if any: altimgfile="missing.png" for ext in png gif jpg ; do altimgcand="${ra}/${altimgname}.${ext}" # Delete candidate if empty: if [[ -r "${altimgcand}" ]]; then if [[ ! ( -s ${altimgcand} ) ]]; then echo "*** File ${altimgcand} is empty, deleting it" 1>&2 /bin/rm -f ${altimgcand} fi fi if [[ -s "${altimgcand}" ]]; then altimgfile="${altimgcand}"; break fi done if [[ ( -r ${altimgfile} ) && ( "${altimgfile}" != "missing.png" ) ]]; then altimgbutt='['"${alttxt}"']' else altimgbutt="[荺" fi fi # Output the entry if [[ ${n} -eq 0 ]]; then echo " " >> ${htmfile} fi cat <> ${htmfile} EOF n=$(( ${n} + 1 )) if [[ ${n} -ge 5 ]]; then echo " " >> ${htmfile} n=0 fi done # Write index page trailer if [[ ${n} -gt 0 ]]; then echo " " >> ${htmfile} fi cat <> ${htmfile}

${ra}
${povbutt} ${altimgbutt}

EOF