add plausibleAnalytics support for koch docs[backport:1.6] (#20454)

add plausibleAnalytics to koch docs[backport:1.6]

compiler/docgen.nim

@@ -304,6 +304,10 @@ proc newDocumentor*(filename: AbsoluteFile; cache: IdentCache; conf: ConfigRef,
                    conf.configVars, filename.string,
                    docgenFindFile, compilerMsgHandler)
 
+  if conf.configVars.hasKey("doc.googleAnalytics") and
+      conf.configVars.hasKey("doc.plausibleAnalytics"):
+    doAssert false, "Either use googleAnalytics or plausibleAnalytics"
+
   if conf.configVars.hasKey("doc.googleAnalytics"):
     result.analytics = """
 <script>
@@ -317,6 +321,10 @@ proc newDocumentor*(filename: AbsoluteFile; cache: IdentCache; conf: ConfigRef,
 
 </script>
     """ % [conf.configVars.getOrDefault"doc.googleAnalytics"]
+  elif conf.configVars.hasKey("doc.plausibleAnalytics"):
+    result.analytics = """
+    <script defer data-domain="$1" src="https://plausible.io/js/plausible.js"></script>
+    """ % [conf.configVars.getOrDefault"doc.plausibleAnalytics"]
   else:
     result.analytics = ""
 

koch.nim

@@ -92,9 +92,6 @@ Commands for core developers:
   tests [options]          run the testsuite (run a subset of tests by
                            specifying a category, e.g. `tests cat async`)
   temp options             creates a temporary compiler for testing
-Web options:
-  --googleAnalytics:UA-... add the given google analytics code to the docs. To
-                           build the official docs, use UA-48159761-1
 """
 
 let kochExe* = when isMainModule: os.getAppFilename() # always correct when koch is main program, even if `koch` exe renamed e.g.: `nim c -o:koch_debug koch.nim`
@@ -679,7 +676,7 @@ when isMainModule:
       case normalize(op.key)
       of "boot": boot(op.cmdLineRest)
       of "clean": clean(op.cmdLineRest)
-      of "doc", "docs": buildDocs(op.cmdLineRest, localDocsOnly, localDocsOut)
+      of "doc", "docs": buildDocs(op.cmdLineRest & paCode, localDocsOnly, localDocsOut)
       of "doc0", "docs0":
         # undocumented command for Araq-the-merciful:
         buildDocs(op.cmdLineRest & gaCode)

tools/kochdocs.nim

@@ -13,6 +13,7 @@ import "../compiler/nimpaths"
 
 const
   gaCode* = " --doc.googleAnalytics:UA-48159761-1"
+  paCode* = " --doc.plausibleAnalytics:nim-lang.org"
   # errormax: subsequent errors are probably consequences of 1st one; a simple
   # bug could cause unlimited number of errors otherwise, hard to debug in CI.
   docDefines = "-d:nimExperimentalLinenoiseExtra"