#! /bin/bash
# Last edited on 2010-07-08 18:15:44 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
# animations.
#
# Reads files
#
# rausrs.txt : RA numbers and login names 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-m-0.0000.png - First frame
# ${ra}/main-m-0.5000.png - Middle frame
# ${ra}/main-m-1.0000.png - Last frame
# ${ra}/main-m.gif - Animated gif
# ${ra}/main-s.png - Strip with sample frames
#
# If "-original" is given, makes an index "index-orig.html" for the
# "-orig" versions instead of the edited/rebuilt versions.
#
# The above files are the versions that were edited and/or rebuilt
# by the teacher. The original version of file "{FOO}.{BAR}",
# as turned in by the student, is assumed to be "{FOO}-orig.{BAR}".
#
# The thumbnail version of file "{FOO}.{BAR}" or "{FOO}-orig.{BAR}"
# is created, if needed, with name "{FOO}-i.png" "{FOO}-orig-i.png".
export PATH="./tools:../tools:../../tools:../../../tools:../../../../tools:${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;
# Clock value of frame to use as icon (format "N.N"):
iconclock="0.0";
# iconclock="0.5";
# TRUE if the derived files should be rebuilt as needed:
rebuild=0
# Number of icons per row:
iconsperrow=4
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 [[ $# -ne 1 ]]; then
echo "\$# = $# \$@ = [$@]" 1>&2;
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 images to show (minus extension):
firstname="main-0.0000${hotsuf}"
middlename="main-0.5000${hotsuf}"
lastname="main-1.0000${hotsuf}"
stripname="main-s${hotsuf}"
movname="main-m${hotsuf}"
altmovname="main-m${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 [[ -e ${htmfile} ]]; then
/bin/mv ${htmfile} ${htmfile}~
fi
# Write index page header:
cat <<EOF >> ${htmfile}
<html>
<head>
<title>${title} (${hottxt})</title>
</head>
<body bgcolor="#cbcbcb">
<h1>${title} (${hottxt})</h1>
<h2><tt>[<a href="index${altsuf}.html">${alttxt}</a>></tt></h2>
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 <<EOF >> ${htmfile}
<table cellspacing=1 cellpadding=1 border=0>
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.
# ${stripfile} = file name of the "hot" filmstrip.
# ${movfile} = file name of the full "hot" movie.
# ${moviconfile} = file name of the iconic version of the "hot" movie.
# ${altmovfile} = file name of the alternate movie.
#
# ${frabutt} = the HTML fragment of the single-frame buttons.
# ${strbutt} = the HTML fragment of the filmstrip button.
# ${movbutt} = the HTML fragment of the hot movie button.
# ${altmovbutt} = the HTML fragment of the alternate movie 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
frabutt="[×]"
strbutt="[×]"
movbutt="[×]"
altmovbutt="[×]"
povbutt="[×]"
stripfile="missing.png"
movfile="missing.png"
moviconfile="missing-i.png"
altmovfile="missing.png"
elif [[ -r ${ra}/.absent ]]; then
# Absentee student:
frabutt="[×]"
strbutt="[×]"
movbutt="[×]"
altmovbutt="[×]"
povbutt="[×]"
stripfile="absent.png"
movfile="absent.png"
moviconfile="absent-i.png"
altmovfile="absent.png"
# Ckeck if the POV-ray source exists, just in case:
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 ${povfile} ]]; then
povbutt='[<a href="'"${povfile}"'">fonte</a>]'
else
povbutt="[×]"
fi
# Default movie icon is "missing-i.png", eventually changed below:
moviconfile="missing-i.png"
moviconok=0
# Create single-frame button string ${frabutt}:
frabutt=""
for fc in \
${firstname}/0.0 \
${middlename}/0.5 \
${lastname}/1.0 \
; do
franame="${fc%/*}"
clock="${fc#*/}"
# Get:
# ${frafile} = file name of selected full "hot" frame.
# ${fraiconfile} = file name of iconic versions of selected "hot" frame.
# ${clock} = clock value of the selected frame.
# Look for frame image, of any type (defaults to "missing.png"):
frafile="missing.png"
for ext in png gif jpg ; do
# Candidate frame file to show:
fracand="${ra}/${franame}.${ext}"
# Remove candidate image if empty:
if [[ -r "${fracand}" ]]; then
if [[ ! ( -s ${fracand} ) ]]; then
echo "file ${fracand} is empty, deleting it" 1>&2
/bin/rm -f ${fracand}
fi
fi
# If it exists and is not empty, use it:
if [[ -s "${fracand}" ]]; then
frafile="${fracand}"; break
fi
done
# Get thumbnail (icon) image for that frame image:
fraiconfile="${ra}/${franame}-i.png"
if [[ "${frafile}" != "missing.png" ]]; then
# We do have a frame image:
# Remove the thumbnail if empty or outdated:
if [[ -r ${fraiconfile} ]]; then
if [[ ( ! ( -s ${fraiconfile} ) ) || ( ${frafile} -nt ${fraiconfile} ) ]]; then
/bin/rm -f ${fraiconfile}
fi
fi
# Make sure that the icon does exist:
if [[ ! ( -s ${fraiconfile} ) ]]; then
echo "=== creating thumbnail image for ${frafile} ===" 1>&2
convert ${frafile} \
-geometry "x${iconHeight}" \
+profile '*' \
-colors 254 \
${fraiconfile}
fi
frabutt="${frabutt}"'[<a href="'"${frafile}"'">'"${clock}"'</a>]'
else
# We do not have a frame image to show.
echo "*** Files ${ra}/${franame}.{png,gif,jpg} are missing, unreadable, or empty" 1>&2
# Remove the corresponding thumbnail, if any:
if [[ -r ${fraiconfile} ]]; then
/bin/rm -f ${fraiconfile}
fi
# Use the icon for "missing" image:
fraiconfile="missing-i.png"
frabutt="${frabutt}[×]"
fi
echo " clock = ${clock} frame = ${frafile} icon = ${fraiconfile}" 1>&2
# Save frame icon as movie icon:
if [[ ( "${fraiconfile}" != "missing-i.png" ) && ( ${moviconok} -eq 0 ) ]]; then
moviconfile="${fraiconfile}"
if [[ "/${clock}" == "/${iconclock}" ]]; then moviconok=1; fi
fi
done
# Get filmstrip file name (may have any extension)
stripfile="missing.png"
for ext in png gif jpg ; do
stripcand="${ra}/${stripname}.${ext}";
# Remove candidate image if empty:
if [[ -r "${stripcand}" ]]; then
if [[ ! ( -s ${stripcand} ) ]]; then
echo "file ${stripcand} is empty, deleting it" 1>&2
/bin/rm -f ${stripcand}
fi
fi
if [[ -s "${stripcand}" ]]; then
stripfile="${stripcand}"; break
fi
done
if [[ ( -s ${stripfile} ) && ( "${stripfile}" != "missing.png" ) ]]; then
echo "*** File ${stripfile} is missing, unreadable, or empty" 1>&2
strbutt='[<a href="'"${stripfile}"'">quadros</a>]'
else
strbutt="[×]"
fi
echo " file strip = ${stripfile}" 1>&2
# Get file name of "hot" movie:
movfile="${ra}/${movname}.gif"
if [[ ${rebuild} -ne 0 ]]; then
if [[ -r ${povfile} ]]; then
# (Re)build movie if necessary:
if [[ ! ( -s ${movfile} ) ]]; then
echo "=== (re)building movie ${movfile} ===" 1>&2
( cd ${ra} && make ${movfile:t} ; echo " " )
echo "=== done rebuilding ${movfile} ===========================" 1>&2
fi
else
echo "*** File ${povfile} missing, can't rebuild ${movfile}" 1>&2
fi
fi
if [[ ! ( -s ${movfile} ) ]]; then
echo "*** File ${movfile} is missing, unreadable, or empty" 1>&2
movfile="missing.png"
fi
echo " movie file = ${movfile}" 1>&2
# Create "hot" movie button, or substitute "missing.png":
if [[ "${movfile}" != "missing.png" ]]; then
movbutt='[<a href="'"${movfile}"'">filme</a>]'
else
movbutt="[×]"
fi
# Get name of alternate movie file:
altmovfile="${ra}/${altmovname}.gif"
if [[ ! ( -s ${altmovfile} ) ]]; then
echo "*** File ${altmovfile} is missing, unreadable, or empty" 1>&2
altmovfile="missing.png"
fi
echo " alternate movie file = ${altmovfile}" 1>&2
# Create alternate movie button:
if [[ "${altmovfile}" != "missing.png" ]]; then
altmovbutt='[<a href="'"${altmovfile}"'">'"${alttxt}"'</a>]'
else
altmovbutt="[×]"
fi
fi
# Format the movie icon
iconbutt='<a href="'"${movfile}"'"><img src="'"${moviconfile}"'"></a>'
# echo "${frabutt} ${strbutt} ${movbutt} ${altmovbutt} ${iconbutt}" 1>&2
# Output the entry
if [[ ${n} -eq 0 ]]; then
echo " <tr valign=top>" >> ${htmfile}
fi
cat <<EOF >> ${htmfile}
<td nowrap>${iconbutt}<br><font size=+2><b>${ra}</b></font><br> </td>
<td nowrap><small>${frabutt} <br>${strbutt} <br>${movbutt} <br>${altmovbutt} <br>${povbutt} </small></td>
EOF
n=$(( ${n} + 1 ))
if [[ ${n} -ge ${iconsperrow} ]]; then
echo " </tr>" >> ${htmfile}
n=0
fi
done
if [[ ${n} -gt 0 ]]; then
echo " </tr>" >> ${htmfile}
fi
cat <<EOF >> ${htmfile}
</table>
<hr>
</body>
</html>
EOF