Fix miscellaneous windows issues with building

src/nimgen/c2nim.nim

@@ -38,7 +38,7 @@ proc c2nim*(fl, outfile: string, c2nimConfig: c2nimConfigObj) =
 
   for inc in gIncludes:
     if inc.isAbsolute():
-      passC &= ("""{.passC: "-I\"$#\"".}""" % [inc]) & "\n"
+      passC &= ("""{.passC: "-I\"$#\"".}""" % [inc.sanitizePath()]) & "\n"
     else:
       passC &= (
         """{.passC: "-I\"" & currentSourcePath().splitPath().head & "$#\"".}""" %
@@ -85,11 +85,10 @@ proc c2nim*(fl, outfile: string, c2nimConfig: c2nimConfigObj) =
       passC &= "const header$# = currentSourcePath().splitPath().head & \"$#\"\n" %
         [fname, file.relativePath()]
     extflags = "--header:header$#" % fname
-
   # Run c2nim on generated file
   var cmd = "c2nim $# $# --out:$# $#" % [c2nimConfig.flags, extflags, outfile, cfile]
   when defined(windows):
-    cmd = "cmd /c " & cmd
+    cmd = "cmd /c " & cmd.quoteShell
   discard execProc(cmd)
 
   if c2nimConfig.preprocess or c2nimConfig.ctags:

src/nimgen/external.nim

@@ -2,6 +2,9 @@ import os, osproc, regex, ropes, streams, strutils
 
 import globals
 
+proc sanitizePath*(path: string): string =
+  path.multiReplace([("\\", "/"), ("//", "/")])
+
 proc execProc*(cmd: string): string =
   result = ""
   var
@@ -106,7 +109,7 @@ proc runPreprocess*(file, ppflags, flags: string, inline: bool): string =
     cmd = "$# -E $# $#" % [pproc, ppflags, file]
 
   for inc in gIncludes:
-    cmd &= " -I " & inc
+    cmd &= " -I " & inc.quoteShell
 
   # Run preprocessor
   var data = execProc(cmd)

src/nimgen/gencore.nim

@@ -20,7 +20,7 @@ proc addEnv*(str: string): string =
     discard
 
   # if there are still format args, print a warning
-  if newStr.contains("${"):
+  if newStr.contains("$") and not newStr.contains("$replace("):
     echo "WARNING: \"", newStr, "\" still contains an uninterpolated value!"
 
   return newStr

src/nimgen/runcfg.nim

@@ -196,6 +196,9 @@ proc runCfg*(cfg: string) =
       # Reset on a per project basis
       gCCompiler = getEnv(cCompilerEnv, defaultCCompiler)
 
+    gCppCompiler = gCppCompiler.quoteShell
+    gCCompiler = gCCompiler.quoteShell
+
     if gConfig["n.global"].hasKey("filter"):
       gFilter = gConfig["n.global"]["filter"]
     if gConfig["n.global"].hasKey("quotes"):