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#
#
#           The Nim Compiler
#        (c) Copyright 2014 Andreas Rumpf
#
#    See the file "copying.txt", included in this
#    distribution, for details about the copyright.
#

## Nimfix is a tool that helps to convert old-style Nimrod code to Nim code.

import strutils, os, parseopt
import options, commands, modules, sem, passes, passaux, pretty, msgs, nimconf,
  extccomp, condsyms, lists

const Usage = """
Nimfix - Tool to patch Nim code
Usage:
  nimfix [options] projectflie.nim

Options:
  --overwriteFiles:on|off          overwrite the original nim files.
                                   DEFAULT is ON!
  --onlyMainfile                   overwrite only the main file.
  --checkExtern:on|off             style check also extern names
  --styleCheck:on|off|auto         performs style checking for identifiers
                                   and suggests an alternative spelling; 
                                   'auto' corrects the spelling.

In addition, all command line options of Nim are supported.
"""

proc mainCommand =
  #msgs.gErrorMax = high(int)  # do not stop after first error
  registerPass verbosePass
  registerPass semPass
  gCmd = cmdPretty
  appendStr(searchPaths, options.libpath)
  if gProjectFull.len != 0:
    # current path is always looked first for modules
    prependStr(searchPaths, gProjectPath)

  compileProject()
  pretty.overwriteFiles()

proc processCmdLine*(pass: TCmdLinePass, cmd: string) =
  var p = parseopt.initOptParser(cmd)
  var argsCount = 0
  while true: 
    parseopt.next(p)
    case p.kind
    of cmdEnd: break 
    of cmdLongoption, cmdShortOption: 
      case p.key.normalize
      of "overwritefiles":
        case p.val.normalize
        of "on": gOverWrite = true
        of "off": gOverWrite = false
        else: localError(gCmdLineInfo, errOnOrOffExpected)
      of "checkextern":
        case p.val.normalize
        of "on": gCheckExtern = true
        of "off": gCheckExtern = false
        else: localError(gCmdLineInfo, errOnOrOffExpected)
      of "stylecheck": 
        case p.val.normalize
        of "off": gStyleCheck = StyleCheck.None
        of "on": gStyleCheck = StyleCheck.Warn
        of "auto": gStyleCheck = StyleCheck.Auto
        else: localError(gCmdLineInfo, errOnOrOffExpected)
      of "onlymainfile": gOnlyMainfile = true
      else:
        processSwitch(pass, p)
    of cmdArgument:
      options.gProjectName = unixToNativePath(p.key)
      # if processArgument(pass, p, argsCount): break

proc handleCmdLine() =
  if paramCount() == 0:
    stdout.writeln(Usage)
  else:
    processCmdLine(passCmd1, "")
    if gProjectName != "":
      try:
        gProjectFull = canonicalizePath(gProjectName)
      except OSError:
        gProjectFull = gProjectName
      var p = splitFile(gProjectFull)
      gProjectPath = p.dir
      gProjectName = p.name
    else:
      gProjectPath = getCurrentDir()
    loadConfigs(DefaultConfig) # load all config files
    # now process command line arguments again, because some options in the
    # command line can overwite the config file's settings
    extccomp.initVars()
    processCmdLine(passCmd2, "")
    mainCommand()

when compileOption("gc", "v2") or compileOption("gc", "refc"):
  GC_disableMarkAndSweep()

condsyms.initDefines()
defineSymbol "nimfix"
handleCmdline()