#!/bin/bash
# Write a Subversion log message template to stdout. List the files that would
# be committed and attempt to list the names of functions changed. (The listing
# of functions is very unreliable.) Add a full diff for review and reference.
# Usage: $0 [dir/file...]

# Get a list of the files (and dirs) affected.
FILES=`svn st "$@" | grep -v -E "^(\?|  L|X|Performing|DBG:|$)" | sed 's/^.......//' | sort`

echo

# List the files affected, and attempt to list the functions affected.
for FILE in $FILES; do
  echo "* $FILE"
  # Find the names of the functions affected, and list them in parentheses.
  # Diff with no context ('-U0') to get more accurate function names.
  svn diff --depth=empty --diff-cmd diff -x '-U0 -p' "$FILE" |
    sed -e "s/^@@ [^@]* @@ .*\<\(\([A-Za-z_][A-Za-z0-9_]*\) *(.*\|struct \([A-Za-z_][A-Za-z0-9_]*\)$\)/  (\2\3): /" -e "t" -e "d" |
    uniq
  echo
done

# Ensure svn doesn't include the diff with the log message when committing.
echo '--This line, and those below, will be ignored--'
echo

# Append the diff. Call 'svn diff' for each file separately, to get them
# in the same order as the list above.
for FILE in $FILES; do
  svn diff --depth=empty --diff-cmd diff -x -pu "$FILE"
done