#! /bin/bash
# This script tests: pbmtext
# Also requires:

LANG=C
LC_ALL=C
export LANG LC_ALL

# This test requires a working UTF-8 locale
# Skip this test if none are available

iconv /dev/null
if [ $? -ne 0  ]
  then echo "iconv command not available." 1>&2
       echo "Skipping." 1>&2
       exit 80;
fi

tmpdir=${tmpdir:-/tmp}
utf_locale_list=${tmpdir}/utf_locale_list

locale_to_test="en_US.utf8"  # Initial value; this
# does not have to be actually available.
# Edit the above value if you have a preferred locale.

# Make a list of available locales which end in "utf8" etc.
# If none are found, abort test

locale -a | grep -e "\.utf8$" -e "\.utf-8$" -e "\.UTF-8$" \
    > ${utf_locale_list} || locale_to_test=""

# Hunt for a valid utf8 locale
# Submit each candidate to a trial pbmtext run until one that works is
# encountered

until [ -z ${locale_to_test} ] || \
  echo "A" | LC_ALL=${locale_to_test} pbmtext -wchar > /dev/null
    do
      # Read first line of file
      locale_to_test=`head -n 1 ${utf_locale_list}`;
      # then erase the line
      sed -i 1d ${utf_locale_list};
    done;

if [ -z  ${locale_to_test} ]
  then echo "No utf-8 locale available." 1>&2
       echo "Skipping." 1>&2
       exit 80;
  else
       echo "Testing with locale set to ${locale_to_test}" 1>&2
fi;

locale_for_test=${locale_to_test}


# Test 1.
# Two rows
# Should print 2066913605 5110 twice

echo "Test 1"

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i); print ""; \
             for (i=161;i<=255;++i) printf("%c",i); }' | \
    pbmtext -builtin bdf | cksum

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i); print ""; \
             for (i=161;i<=191;++i) printf("%c%c",194,i);     \
             for (i=128;i<=191;++i) printf("%c%c",195,i); }' | \
    LC_ALL=${locale_for_test} pbmtext -builtin bdf -wchar | cksum


# Test 2.
# One row
# Should print 2920616515 2301 twice

echo "Test 2"

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i); print "" }' | \
    pbmtext -builtin bdf | cksum

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i);  print ""}' | \
    LC_ALL=${locale_for_test} pbmtext -builtin bdf -wchar | cksum

output=${tmpdir}/output


# Test 3.
# Two rows
# Compare with cmp.
# Should print 0 0 0 : 0

echo "Test 3"

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i); print ""; \
             for (i=161;i<=191;++i) printf("%c%c",194,i);      \
             for (i=128;i<=191;++i) printf("%c%c",195,i); print ""}' \
    > ${output}

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i); print ""; \
             for (i=161;i<=191;++i) printf("%c%c",194,i);      \
             for (i=128;i<=191;++i) printf("%c%c",195,i); print ""}' | \
    LC_ALL=${locale_for_test} pbmtext -builtin bdf -wchar -text-dump | \
    cmp --quiet - ${output}

echo ${PIPESTATUS[@]} ":" $?
rm ${output}


# Test 4.
# One row  ASCII 7-bit range
# Should print the following twice:
# !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~

echo "Test 4"

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i); print "" } '

awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i); print ""}' | \
        LC_ALL=${locale_for_test} pbmtext -builtin bdf -wchar -text-dump


# Test 5.
# Long input text

echo "Test 5 Invalid"

long_txt=${tmpdir}/long.txt
test_out=${tmpdir}/test_out

head -c 4999 /dev/zero | sed 's@\x00@\xc2\xbe@g' > ${long_txt}
cat ${long_txt} | wc -c | tr -d ' '

cat ${long_txt} | \
  LC_ALL=${locale_for_test} pbmtext -nomargins -builtin fixed -wchar | cksum

echo 1>&2
echo "Test input text which exceeds length limit" 1>&2
echo "Error messages should appear below the line." 1>&2
echo "-----------------------------------------------------------" 1>&2

printf "z" >> ${long_txt}
cat ${long_txt} | wc -c | tr -d ' '

cat ${long_txt} | \
  LC_ALL=${locale_for_test} \
  pbmtext -nomargins -builtin fixed -wchar > ${test_out} || \
  printf "Expected failure 1 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

cat ${long_txt} | \
  LC_ALL=${locale_for_test} \
  pbmtext -nomargins -builtin fixed -wchar > ${test_out} || \
  printf "Expected failure 2 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

rm ${long_txt}


# Test 6.
# Invalid utf-8 sequences
# For each case output should be:
# 6-x : 0 1 : 1 1

echo "Invalid utf-8 sequences as input." 1>&2
echo "Errors message should appear below the line." 1>&2
echo "-----------------------------------------------------------" 1>&2

echo "Test 6 Invalid"

awk 'BEGIN { printf("%c%c",128,129);  print ""}' | \
        LC_ALL=${locale_for_test} \
        pbmtext -builtin bdf -wchar -text-dump > ${test_out}
  printf "6-1: ${PIPESTATUS[*]} : $? "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

awk 'BEGIN { printf("ABC%c%c",192, 193);  print ""}' | \
        LC_ALL=${locale_for_test} \
        pbmtext -builtin bdf -wchar -text-dump > ${test_out}
  printf "6-2: ${PIPESTATUS[*]} : $? "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

awk 'BEGIN { printf("abcde%c%c", 254, 253);  print ""}' | \
        LC_ALL=${locale_for_test} \
        pbmtext -builtin bdf -wchar -text-dump > ${test_out}
  printf "6-3: ${PIPESTATUS[*]} : $? "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

awk 'BEGIN { printf("abcdefg%c%c", 195, 15);  print ""}' | \
        LC_ALL=${locale_for_test} \
        pbmtext -builtin bdf -wchar -text-dump > ${test_out}
  printf "6-4: ${PIPESTATUS[*]} : $? "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

awk 'BEGIN { printf("123456789%c%c%c", 224, 143 ,0);  print ""}' | \
        LC_ALL=${locale_for_test} \
        pbmtext -builtin bdf -wchar -text-dump > ${test_out}
  printf "6-5: ${PIPESTATUS[*]} : $? "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

awk 'BEGIN { printf("abcdefg123ABCDEFG%c%c%c%c",247, 135, 135, 7);  print ""}' | \
        LC_ALL=${locale_for_test} \
        pbmtext -builtin bdf -wchar -text-dump > ${test_out}
  printf "6-6: ${PIPESTATUS[*]} : $? "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}