nimpretty: proper command line handling; added tests; travis ensures these stay green

tools/nimpretty.nim

@@ -1,72 +0,0 @@
-#
-#
-#           The Nim Compiler
-#        (c) Copyright 2017 Andreas Rumpf
-#
-#    See the file "copying.txt", included in this
-#    distribution, for details about the copyright.
-#
-
-## Standard tool for pretty printing.
-
-when not defined(nimpretty):
-  {.error: "This needs to be compiled with --define:nimPretty".}
-
-import ../compiler / [idents, msgs, ast, syntaxes, renderer, options]
-
-import parseopt, strutils, os
-
-const
-  Version = "0.1"
-  Usage = "nimpretty - Nim Pretty Printer Version " & Version & """
-
-  (c) 2017 Andreas Rumpf
-Usage:
-  nimpretty [options] file.nim
-Options:
-  --backup:on|off     create a backup file before overwritting (default: ON)
-  --version           show the version
-  --help              show this help
-"""
-
-proc writeHelp() =
-  stdout.write(Usage)
-  stdout.flushFile()
-  quit(0)
-
-proc writeVersion() =
-  stdout.write(Version & "\n")
-  stdout.flushFile()
-  quit(0)
-
-proc prettyPrint(infile: string) =
-  let conf = newConfigRef()
-  let fileIdx = fileInfoIdx(conf, infile)
-  when defined(nimpretty2):
-    discard parseFile(fileIdx, newIdentCache(), conf)
-  else:
-    let tree = parseFile(fileIdx, newIdentCache(), conf)
-    let outfile = changeFileExt(infile, ".pretty.nim")
-    renderModule(tree, infile, outfile, {}, fileIdx, conf)
-
-proc main =
-  var infile: string
-  var backup = true
-  for kind, key, val in getopt():
-    case kind
-    of cmdArgument:
-      infile = key.addFileExt(".nim")
-    of cmdLongoption, cmdShortOption:
-      case normalize(key)
-      of "help", "h": writeHelp()
-      of "version", "v": writeVersion()
-      of "backup": backup = parseBool(val)
-      else: writeHelp()
-    of cmdEnd: assert(false) # cannot happen
-  if infile.len == 0:
-    quit "[Error] no input file."
-  if backup:
-    os.copyFile(source=infile, dest=changeFileExt(infile, ".nim.backup"))
-  prettyPrint(infile)
-
-main()

tools/nimpretty.nim.cfg

@@ -1,2 +0,0 @@
---define: nimpretty
---define: nimpretty2