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#! ./miniruby
def diff2index(cmd, *argv)
lines = []
path = nil
`#{cmd} #{argv.join(" ")}`.split(/\n/).each do |line|
case line
when /^Index: (\S*)/, /^diff --git [a-z]\/(\S*) [a-z]\/\1/
path = $1
when /^@@\s*-[,\d]+ +\+(\d+)[,\d]*\s*@@(?: +([A-Za-z_][A-Za-z_0-9 ]*[A-Za-z_0-9]))?/
line = $1.to_i
ent = "\t* #{path}"
ent << " (#{$2})" if $2
lines << "#{ent}:"
end
end
lines.uniq!
lines.empty? ? nil : lines
end
if File.directory?(".svn")
cmd = "svn diff --diff-cmd=diff -x-pU0"
change = diff2index(cmd, ARGV)
elsif File.directory?(".git")
cmd = "git diff -U0"
change = diff2index(cmd, ARGV) || diff2index(cmd, "--cached", ARGV)
else
abort "does not seem to be under a vcs"
end
puts change if change
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