Fix #209 - cache return val, fix nimcache dir

nimterop/build.nim

@@ -91,18 +91,22 @@ proc execAction*(cmd: string, retry = 0, die = true, cache = false,
     # Else cache for preserving functionality in nimsuggest and nimcheck
     let
       hash = (ccmd & cacheKey).hash().abs()
-      cacheFile = getNimteropCacheDir() / "execCache" / "nimterop_" & $hash & ".txt"
+      cachePath = getNimteropCacheDir() / "execCache" / "nimterop_" & $hash
+      cacheFile = cachePath & ".txt"
+      retFile = cachePath & "_ret.txt"
 
     when defined(nimsuggest) or defined(nimcheck):
       # Load results from cache file if generated in previous run
-      if fileExists(cacheFile):
+      if fileExists(cacheFile) and fileExists(retFile):
         result.output = cacheFile.readFile()
+        result.ret = retFile.readFile().parseInt()
       elif die:
         doAssert false, "Results not cached - run nim c/cpp at least once\n" & ccmd
     else:
-      if cache and fileExists(cacheFile) and not compileOption("forceBuild"):
+      if cache and fileExists(cacheFile) and fileExists(retFile) and not compileOption("forceBuild"):
         # Return from cache when requested
         result.output = cacheFile.readFile()
+        result.ret = retFile.readFile().parseInt()
       else:
         # Execute command and store results in cache
         (result.output, result.ret) = gorgeEx(ccmd)
@@ -113,6 +117,7 @@ proc execAction*(cmd: string, retry = 0, die = true, cache = false,
             let flag = when not defined(Windows): "-p" else: ""
             discard execAction(&"mkdir {flag} {dir.sanitizePath}")
           cacheFile.writeFile(result.output)
+          retFile.writeFile($result.ret)
   else:
     # Used by toast
     (result.output, result.ret) = execCmdEx(ccmd)

nimterop/nimconf.nim

@@ -58,12 +58,24 @@ proc getProjectDir*(): string =
   else:
     discard
 
+proc stripName(path, projectName: string): string =
+  # Remove `pname_d|r` tail from path
+  let
+    (head, tail) = path.splitPath()
+  if projectName in tail:
+    result = head
+  else:
+    result = path
+
 proc getNimcacheDir*(projectDir = ""): string =
   ## Get nimcache directory for current compilation or specified `projectDir`
   when nimvm:
     when (NimMajor, NimMinor, NimPatch) >= (1, 2, 0):
       # Get value at compile time from `std/compilesettings`
-      result = querySetting(SingleValueSetting.nimcacheDir)
+      result = stripName(
+        querySetting(SingleValueSetting.nimcacheDir),
+        querySetting(SingleValueSetting.projectName)
+      )
   else:
     discard
 
@@ -78,12 +90,7 @@ proc getNimcacheDir*(projectDir = ""): string =
       dumpJson = getJson(projectDir)
 
     if dumpJson != nil and dumpJson.hasKey("nimcache"):
-      result = dumpJson["nimcache"].getStr()
+      result = stripName(dumpJson["nimcache"].getStr(), "dummy")
-      let
-        (head, tail) = result.splitPath()
-      if "dummy" in tail:
-        # Remove `dummy_d` subdir when default nimcache
-        result = head
 
   # Set to OS defaults if not detectable
   if result.len == 0: