feat(Lib/os): uname

Author: litlighilit

src/pylib/Lib/n_os.nim

@@ -9,5 +9,5 @@ when not defined(js):
     term, inheritable]
   export term, set_inheritable, get_inheritable
 
-
+genUname string
 

src/pylib/Lib/os.nim

@@ -11,10 +11,10 @@ import ./os_impl/private/platform_utils
 import ../pyconfig/bootstrap_hash
 
 import ./n_os
-export n_os except scandir, DirEntry, urandom, getrandom
+export n_os except scandir, DirEntry, urandom, getrandom, genUname, uname, uname_result
 
 import ../version
-
+genUname PyStr
 template scandir*(): untyped{.pysince(3,5).} = n_os.scandir()
 template scandir*[T](p: PathLike[T]): untyped{.pysince(3,5).} = n_os.scandir(p)
 template scandir*(p: int): untyped{.pysince(3,5).} = n_os.scandir(p)

src/pylib/Lib/os_impl/posix_like.nim

@@ -2,11 +2,11 @@
 
 import ./posix_like/[
   fdopen, open_close, lseek, seek_consts, truncate, stat, scandirImpl, mkrmdir, unlink,
-  rename, isatty, links, utime, get_id, chmods, umaskImpl
+  rename, isatty, links, utime, get_id, chmods, umaskImpl, unameImpl,
 ]
 
 export seek_consts except toCSEEK
 export stat except statAttr
 export
   fdopen, open_close, lseek, truncate, scandirImpl, mkrmdir, unlink,
-  rename, isatty, links, utime, get_id, chmods, umaskImpl
+  rename, isatty, links, utime, get_id, chmods, umaskImpl, unameImpl

src/pylib/Lib/os_impl/posix_like/unameImpl.nim

@@ -0,0 +1,75 @@
+
+import ./pyCfg
+importConfig [os]
+template genUnameResult(S){.dirty.} =
+  type uname_result* = tuple[
+    sysname,
+    nodename,
+    release,
+    version,
+    machine: S
+  ]
+when HAVE_UNAME:
+  import std/posix
+  import ./errnoHandle
+  proc utsFieldToString[T](field: T): string =
+    # Implementation of utsFieldToString goes here
+    when T is array:  # array of char
+      result = newStringOfCap(field.len)
+      var i = 0
+      while field[i] != '\0':
+        assert i < field.len
+        result.add field[i]
+        i.inc
+    else: $field
+  template posix_uname(u): cint =
+    bind uname
+    uname(u)
+  template genUname*(S){.dirty.} =
+    bind posix_uname, utsFieldToString, Utsname
+    bind genUnameResult
+    genUnameResult(S)
+    proc uname*(): uname_result =
+      var u{.noInit.}: Utsname
+      let res = posix_uname(u)
+      if res < 0:
+        raiseErrno()
+      template SET(field) =
+        result.field = S utsFieldToString(u.field)
+      {.push hint[ConvFromXtoItselfNotNeeded]: off.}
+      SET sysname
+      SET nodename
+      SET release
+      SET version
+      SET machine
+      {.pop.}
+
+elif InJs:
+  import ../common
+  template genUname*(S){.dirty.} =
+    bind genUnameResult
+    genUnameResult(S)
+    proc uname*(): uname_result =
+      proc getSysname: cstring{.importInNodeModOrDeno(os, "type", "build.os$").}
+      proc getNodename: cstring{.importDenoOrNodeMod(os, hostname).}
+      proc getRelease: cstring{.importInNodeModOrDeno(os, release, osRelease).}
+      proc getVersion: cstring{.importNode(os, version).}
+      proc getMachine: cstring{.importInNodeModOrDeno(os, machine, "build.arch$").}
+      template SET(field) =
+        result.field = S $`get field`()
+      SET sysname
+      SET nodename
+      SET release
+      SET version
+      SET machine
+
+      #SET sysname, `type`, `build.os` # attr # "windows": "Windows_NT", caption
+else:
+  template genUname*(S){.dirty.} =
+    bind genUnameResult
+    genUnameResult(S)
+    # do nothing other than define the type
+
+when isMainModule:
+  genUname string
+  echo uname()

src/pylib/pyconfig/os.nim

@@ -9,6 +9,7 @@ const
   HAVE_FTRUNCATE* = true
 
 AC_CHECK_FUNCS(
+  uname,
   unlinkat,
   fdopendir,
 )