added os.findExe

lib/pure/os.nim

@@ -1231,4 +1231,17 @@ proc getFileSize*(file: string): biggestInt {.rtl, extern: "nos$1".} =
       close(f)
     else: OSError()
 
+proc findExe*(exe: string): string = 
+  ## Searches for `exe` in the current working directory and then
+  ## in directories listed in the ``PATH`` environment variable. 
+  ## Returns "" if the `exe` cannot be found. On DOS-like platforms, `exe` 
+  ## is added an ``.exe`` file extension if it has no extension.
+  result = addFileExt(exe, os.exeExt)
+  if ExistsFile(result): return
+  var path = os.getEnv("PATH")
+  for candidate in split(path, pathSep): 
+    var x = candidate / result
+    if ExistsFile(x): return x
+  result = ""
+
 {.pop.}

tools/nimrepl.nim

@@ -14,18 +14,6 @@ when defined(tinyc):
 else:
   const runCmd = "c -r"
 
-when not defined(findExe): 
-  # candidate for the stdlib:
-  proc findExe(exe: string): string = 
-    ## returns exe if the exe cannot be found
-    result = addFileExt(exe, os.exeExt)
-    if ExistsFile(result): return
-    var path = os.getEnv("PATH")
-    for candidate in split(path, pathSep): 
-      var x = candidate / result
-      if ExistsFile(x): return x
-    result = ""
-
 var nimExe = findExe("nimrod")
 if nimExe.len == 0: nimExe = "../bin" / addFileExt("nimrod", os.exeExt)
 

web/news.txt

@@ -17,6 +17,7 @@ Additions
 ---------
 
 - Added ``re.findAll``, ``pegs.findAll``.
+- Added ``os.findExe``.
 
 
 2010-10-20 Version 0.8.10 released