all repos — min @ 86c623a957aa83e3325656a760f046c15e873d70

A small but practical concatenative programming language.

lib/sys.nim

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import tables, os, osproc, strutils
import 
  ../core/types,
  ../core/parser, 
  ../core/interpreter, 
  ../core/utils

  # OS
  
define("sys")

  .symbol("pwd") do (i: In):
    i.push newVal(getCurrentDir())
  
  .symbol("cd") do (i: In):
    let f = i.pop
    if f.isString:
      try:
        f.strVal.setCurrentDir
      except:
        i.error errRuntime, getCurrentExceptionMsg()
    else:
      i.error errIncorrect, "A string is required on the stack"
  
  .symbol("ls") do (i: In):
    let a = i.pop
    var list = newSeq[MinValue](0)
    if a.isString:
      if a.strVal.existsDir:
        for i in walkdir(a.strVal):
          list.add newVal(i.path)
        i.push list.newVal
      else:
        i.error errRuntime, "Directory '$1' not found" % [a.strVal]
    else:
      i.error(errIncorrect, "A string is required on the stack")
  
  .symbol("system") do (i: In):
    let a = i.pop
    if a.isString:
      i.push execShellCmd(a.strVal).newVal
    else:
      i.error(errIncorrect, "A string is required on the stack")
  
  .symbol("run") do (i: In):
    let a = i.pop
    if a.isString:
      let words = a.strVal.split(" ")
      let cmd = words[0]
      var args = newSeq[string](0)
      if words.len > 1:
        args = words[1..words.len-1]
      i.push execProcess(cmd, args, nil, {poUsePath}).newVal
    else:
      i.error(errIncorrect, "A string is required on the stack")
  
  .symbol("getenv") do (i: In):
    let a = i.pop
    if a.isString:
      i.push a.strVal.getEnv.newVal
    else:
      i.error(errIncorrect, "A string is required on the stack")
  
  .symbol("putenv") do (i: In):
    let value = i.pop
    let key = i.pop
    if value.isString and key.isString:
      key.strVal.putEnv value.strVal
    else:
      i.error(errIncorrect, "Two strings are required on the stack")
  
  .symbol("os") do (i: In):
    i.push hostOS.newVal
  
  .symbol("cpu") do (i: In):
    i.push hostCPU.newVal
  
  .symbol("file?") do (i: In):
    let f = i.pop
    if f.isString:
      i.push f.strVal.fileExists.newVal
    else:
      i.error errIncorrect, "A string is required on the stack"
  
  .symbol("dir?") do (i: In):
    let f = i.pop
    if f.isString:
      i.push f.strVal.dirExists.newVal
    else:
      i.error errIncorrect, "A string is required on the stack"
  
  .symbol("rm") do (i: In):
    let f = i.pop
    if f.isString:
      try:
        f.strVal.removeFile
      except:
        i.error errRuntime, getCurrentExceptionMsg()
    else:
      i.error errIncorrect, "A string is required on the stack"
  
  .symbol("cp") do (i: In):
    let b = i.pop
    let a = i.pop
    if a.isString and b.isString:
      try:
        copyFile a.strVal, b.strVal
      except:
        i.error errRuntime, getCurrentExceptionMsg()
    else:
      i.error errIncorrect, "Two strings are required on the stack"
  
  .symbol("mv") do (i: In):
    let b = i.pop
    let a = i.pop
    if a.isString and b.isString:
      try:
        moveFile a.strVal, b.strVal
      except:
        i.error errRuntime, getCurrentExceptionMsg()
    else:
      i.error errIncorrect, "Two strings are required on the stack"
  
  .symbol("rmdir") do (i: In):
    let f = i.pop
    if f.isString:
      try:
        f.strVal.removeDir
      except:
        i.error errRuntime, getCurrentExceptionMsg()
    else:
      i.error errIncorrect, "A string is required on the stack"
  
  .symbol("mkdir") do (i: In):
    let f = i.pop
    if f.isString:
      try:
        f.strVal.createDir
      except:
        i.error errRuntime, getCurrentExceptionMsg()
    else:
      i.error errIncorrect, "A string is required on the stack"

  .finalize()