#!/bin/bash

# Process doxygen.warnings.log to generate sorted list of top offenders

# Flag to skip running doxygen

skipdoxy=${1:-""}

DIR=`dirname $0`

ROOT=`hg root`

# Final resting place for the log file

log=$DIR/doxygen.warnings.log

# First, we have to modify doxygen.conf to generate all the warnings

# (We also suppress dot graphs, so shorten the run time.)

if [ "$skipdoxy" == "" ]; then

    conf=$DIR/doxygen.conf

    sed -i.bak -E '/^EXTRACT_ALL |^HAVE_DOT |^WARNINGS /s/YES/no/' $conf

    rm -f $conf.bak

    echo -n "Rebuilding doxygen docs with full errors..."

    (cd $ROOT && ./waf --doxygen >/dev/null 2>&1)

    status=$?

    hg revert $conf

    if [ "$status" = "0" ]; then

	echo "Done."

    else

	echo "FAILED."

	exit 1

    fi

    mv $DIR/doxygen.log $log

else

    echo "Skipping doxygen run, using existing log file $log"

fi

# Analyze the log

# List of module directories (e.g, "src/core/model")

undocmods=$(                \

    grep "^$ROOT" "$log"  | \

    cut -d ':' -f 1       | \

    sed "s|$ROOT||g"      | \

    cut -d '/' -f 2-4     | \

    sort                  | \

    uniq -c               | \

    sort -nr                \

    )

# Number of directories

modcount=$(                         \

    echo "$undocmods"             | \

    wc -l                         | \

    sed 's/^[ \t]*//;s/[ \t]*$//'   \

    )

# For a function with multiple undocumented parameters,

# Doxygen prints the additional parameters on separate lines,

# so they don't show up in the totals above.

# Rather than work too hard to get the exact number,

# we just list the total here. 

addlparam=$(                                  \

    grep -v "^$ROOT" $log                   | \

    grep -v "not generated, too many nodes" | \

    grep "^  parameter '" $log              | \

    wc -l                                   | \

    sed 's/^[ \t]*//;s/[ \t]*$//'             \

    )

# Total number of warnings

warncount=$(echo "$undocmods" | \

    awk '{total += $1}; END {print total}' )

warncount=$((warncount + addlparam))

# List of files appearing in the log

undocfiles=$( \

    grep "^$ROOT" "$log"  | \

    cut -d ':' -f 1       | \

    sed "s|$ROOT||g"      | \

    cut -d '/' -f 2-      | \

    sort                  | \

    uniq -c               | \

    sort -k 2               \

    )

# Total number of files

filecount=$(                        \

    echo "$undocfiles"            | \

    wc -l                         | \

    sed 's/^[ \t]*//;s/[ \t]*$//'   \

    )

# Now we're ready to summarize the log

echo

echo "Report of Doxygen warnings"

echo "----------------------------------------"

echo

echo "(All counts are lower bounds.)"

echo

echo "Warnings by module/directory:"

echo

echo "Count Directory"

echo "----- ----------------------------------"

echo "$undocmods"

echo " $addlparam additional undocumented parameters."

echo "----------------------------------------"

printf "%6d total warnings\n" $warncount

printf "%6d directories with warnings\n" $modcount

echo

echo

echo

echo "Count File" 

echo "----- ----------------------------------"

echo "$undocfiles"

echo "----------------------------------------"

printf "%6d files with warnings\n" $filecount

echo

echo

echo "Doxygen Warnings Summary"

echo "----------------------------------------"

printf "%6d directories\n" $modcount

printf "%6d files\n" $filecount

printf "%6d warnings\n" $warncount