fixes #12998 nim doc regression (#13117)

Author: timotheecour

.gitignore

@@ -89,3 +89,5 @@ megatest.nim
 
 # ignore debug dirs generated by dsymutil on OSX
 *.dSYM
+
+nimdoc.out.css

compiler/docgen.nim

@@ -17,7 +17,7 @@ import
   packages/docutils/rst, packages/docutils/rstgen,
   json, xmltree, cgi, trees, types,
   typesrenderer, astalgo, lineinfos, intsets,
-  pathutils, trees
+  pathutils, trees, nimconf
 
 const
   exportSection = skField
@@ -43,6 +43,7 @@ type
     destFile*: AbsoluteFile
     thisDir*: AbsoluteDir
     examples: string
+    wroteCss*: bool
 
   PDoc* = ref TDocumentor ## Alias to type less.
 
@@ -1069,10 +1070,16 @@ proc writeOutput*(d: PDoc, useWarning = false) =
     template outfile: untyped = d.destFile
     #let outfile = getOutFile2(d.conf, shortenDir(d.conf, filename), outExt, "htmldocs")
     createDir(outfile.splitFile.dir)
+    d.conf.outFile = outfile.extractFilename.RelativeFile
     if not writeRope(content, outfile):
       rawMessage(d.conf, if useWarning: warnCannotOpenFile else: errCannotOpenFile,
         outfile.string)
-    d.conf.outFile = outfile.extractFilename.RelativeFile
+    elif not d.wroteCss:
+      let cssSource = $d.conf.getPrefixDir() / "doc" / "nimdoc.css"
+      let cssDest = $d.conf.outDir / "nimdoc.out.css"
+        # renamed to make it easier to use with gitignore in user's repos
+      copyFile(cssSource, cssDest)
+      d.wroteCss = true
 
 proc writeOutputJson*(d: PDoc, useWarning = false) =
   runAllExamples(d)

compiler/installer.ini

@@ -139,4 +139,4 @@ licenses: "bin/nim,MIT;lib/*,MIT;"
 
 [nimble]
 pkgName: "compiler"
-pkgFiles: "compiler/*;doc/basicopt.txt;doc/advopt.txt"
+pkgFiles: "compiler/*;doc/basicopt.txt;doc/advopt.txt;doc/nimdoc.css"

compiler/main.nim

@@ -305,6 +305,7 @@ proc mainCommand*(graph: ModuleGraph) =
 
       var dumpdata = %[
         (key: "version", val: %VersionAsString),
+        (key: "prefixdir", val: %conf.getPrefixDir().string),
         (key: "project_path", val: %conf.projectFull.string),
         (key: "defined_symbols", val: definedSymbols),
         (key: "lib_paths", val: %libpaths),

compiler/options.nim

@@ -509,6 +509,9 @@ proc getPrefixDir*(conf: ConfigRef): AbsoluteDir =
   ##
   ## This is overridden by some tools (namely nimsuggest) via the ``conf.prefixDir``
   ## field.
+  ## This should resolve to root of nim sources, whether running nim from a local
+  ##  clone or using installed nim, so that these exist: `result/doc/advopt.txt`
+  ## and `result/lib/system.nim`
   if not conf.prefixDir.isEmpty: result = conf.prefixDir
   else: result = AbsoluteDir splitPath(getAppDir()).head
 

config/nimdoc.cfg

@@ -237,7 +237,7 @@ doc.file = """<?xml version="1.0" encoding="utf-8" ?>
 
 <!-- CSS -->
 <title>$title</title>
-<link rel="stylesheet" type="text/css" href="nimdoc.css">
+<link rel="stylesheet" type="text/css" href="/nimdoc.out.css">
 
 <script type="text/javascript" src="dochack.js"></script>
 

koch.nim

@@ -24,7 +24,7 @@ when defined(i386) and defined(windows) and defined(vcc):
   {.link: "icons/koch-i386-windows-vcc.res".}
 
 import
-  os, strutils, parseopt, osproc, streams
+  os, strutils, parseopt, osproc
 
 import tools / kochdocs
 
@@ -45,6 +45,7 @@ Options:
   --help, -h               shows this help and quits
   --latest                 bundle the installers with a bleeding edge Nimble
   --stable                 bundle the installers with a stable Nimble (default)
+  --nim:path               use specified path for nim binary
 Possible Commands:
   boot [options]           bootstraps with given command line options
   distrohelper [bindir]    helper for distro packagers
@@ -605,6 +606,7 @@ when isMainModule:
       case normalize(op.key)
       of "latest": latest = true
       of "stable": latest = false
+      of "nim": nimExe = op.val.absolutePath # absolute so still works with changeDir
       else: showHelp()
     of cmdArgument:
       case normalize(op.key)

nimdoc/test_out_index_dot_html/expected/index.html

@@ -18,7 +18,7 @@
 
 <!-- CSS -->
 <title>foo</title>
-<link rel="stylesheet" type="text/css" href="nimdoc.css">
+<link rel="stylesheet" type="text/css" href="/nimdoc.out.css">
 
 <script type="text/javascript" src="dochack.js"></script>
 

nimdoc/test_out_index_dot_html/expected/theindex.html

@@ -18,7 +18,7 @@
 
 <!-- CSS -->
 <title>Index</title>
-<link rel="stylesheet" type="text/css" href="nimdoc.css">
+<link rel="stylesheet" type="text/css" href="/nimdoc.out.css">
 
 <script type="text/javascript" src="dochack.js"></script>
 

nimdoc/testproject/expected/subdir/subdir_b/utils.html

@@ -18,7 +18,7 @@
 
 <!-- CSS -->
 <title>utils</title>
-<link rel="stylesheet" type="text/css" href="nimdoc.css">
+<link rel="stylesheet" type="text/css" href="/nimdoc.out.css">
 
 <script type="text/javascript" src="dochack.js"></script>