gcc-jbrowser

linux 下的源代码分析阅读器 red hat公司新版

#!/bin/sh
# This wrapper gets called from Source Navigator and calls the Gcc Java 
# front end to generate cross-referencing information.
#
# Copyright (C) 1999, Cygnus Solutions.
#
# Written by Alexandre Petit-Bianco <[e-mail]>, April 1999.

# Where the import file name, specified by SN, will be stored
import_file=""
# Where the piped exec file name, specified by SN, will be stored
piped_exec=""
# Where the xreference file name, specified by SN, will be stored
xref_file=""
# Some jc1 fixed options.
jc1_options="-quiet -fxref=sn"
# Where the jc1 flag for xrefs on local variables will be stored, when set
xref_local=""
# Where the dbimp options will be stored, as we see them
dbimp_options=""
# Where the database prefix will be stored.
dbimp_db_prefix=""
# Path to libgcj's ZIP archive
libgcj_zip=""
# Temporary file to dump CLASSPATH element candidates
classpath_tmp_file=/tmp/classpath-$$

# Verify that gcj is in the path
if [ ! "`which gcj | egrep \"no gcj\"`" ]; then
  # And then gcj should be able to tell us where jc1 is
  jc1=`gcj -print-prog-name=jc1`;
# Otherwise, we try to find jc1 somewhere else
elif [ ! "`which jc1 | egrep \"no jc1\"`" ]; then
    jc1=`which jc1`;
# Bad news, we haven't found something suitable.
else
  echo -n "`basename $0`: Can't find \`gcj' nor \`jc1'. Check your "
  echo "\$PATH environment variable"
  exit 1
fi

# Last test on the jc1 we found.
if [ ! -x "$jc1" ]; then
  echo "The jc1 which was found ($jc1) doesn't seem right"
  exit 1
fi

# Next, augment CLASSPATH with the libgcj ZIP archive
libgcj_zip="`which gcj | sed 's/bin\/gcj/share\/libgcj\.zip/g'`"
if [ "$libgcj_zip" ]; then
  if [ "$CLASSPATH" ]; then
    CLASSPATH="$CLASSPATH:$libgcj_zip"
  else
    CLASSPATH="$libgcj_zip"
  fi
else
  echo -n "Can't find the gcj library Zip archive (libgcj.zip)."
  exit 1
fi


# Parse the options we receive from SN
while [ "$1" ]
do
  case $1 in
  # Dbimp options
  "-c")
    shift
    dbimp_options="$dbimp_options -c $1"
    shift;;
  "-n")
    shift
    dbimp_db_prefix=$1
    shift;;
  "-p")
    shift
    piped_exec=$1
    shift;;
  "-H")
    shift
    dbimp_options="$dbimp_options -H $1"
    shift;;
  "-P")
    shift
    dbimp_options="$dbimp_options -P $1"
    shift;;
  # Parser options
  "-x")
    shift
    xref_file=$1
    shift;;
  "-l")
    xref_local="-fxref-sn-local-vars"
    shift;;
  "-y")
    shift
    import_file=$1
    shift;;
  # Unknown or intentionally discarded options
  *)
    shift;;
  esac
done

# Test that the xref file (if any) is writable
if [ ! -w "$xref_file" ]
then
  # If the file isn't writable, return 13 (EACCES)
  echo "Error: (open) \`$xref_file', errno: 13"
  exit 1
fi

# Complete dbimp's options
[ "$dbimp_db_prefix" ] && dbimp_options="$dbimp_options $dbimp_db_prefix"

# Try to work a CLASSPATH by stuffing in it all directories seen from
# the files passed as arguments.
echo "Generating CLASSPATH entries..."
touch $classpath_tmp_file
if [ -w "$classpath_tmp_file" ]; then
  for file in `cat $import_file`
  do
    file="`pwd`/$file"
    while [ "`dirname $file`" != "/" ] 
    do
      file="`dirname $file`"
      echo $file >> $classpath_tmp_file
    done
  done
  classpath=`sort $classpath_tmp_file | uniq | \
             awk '{printf (":%s"), $1}' | sed 's/^://g'`
else
  classpath="`pwd`"  
fi

# Append the computed classpath to the existing CLASSPATH. Note that,
# at that stage, CLASSPATH always contains something.
[ "$classpath" ] && CLASSPATH="$CLASSPATH:$classpath"

# Complete jc1's options
[ -f "$xref_file" ] && jc1_options="$jc1_options -fxref-sn-file=$xref_file"
[ "$xref_local" ] && jc1_options="$jc1_options $xref_local"
jc1_options="$jc1_options -fCLASSPATH=$CLASSPATH"

# Loop on all files found in the import file, and call jc1.
for file in `cat $import_file`
do
  # If the file isn't readable, return 13 (EACCES)
  if [ ! -r "$file" ]; then
    echo "Error: (open) \`$file', errno: 13"
    exit 2
  # Otherwise, extract xrefs.
  else
    echo $file
    echo "$jc1 $jc1_options $file | $piped_exec $dbimp_options" >> /tmp/log
    # Note: we do not support reporting error writing to the dbimp pipe.
    $jc1 $jc1_options $file | $piped_exec $dbimp_options
  fi
done

exit 0