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# -------------- post unzip steps ---------------------------------------------

import strutils, os, osproc, streams, browsers

const

arch = $(sizeof(int)*8)

mingw = "mingw$1-6.3.0.7z" % arch

url = r"https://nim-lang.org/download/" & mingw

var

interactive = true

type

DownloadResult = enum

Failure,

Manual,

Success

proc unzip(): bool =

if not fileExists("dist" / mingw):

echo "Could not find ", "dist" / mingw

return false

try:

let p = osproc.startProcess(r"bin\7zG.exe", getCurrentDir() / r"dist",

["x", mingw])

if p.waitForExit != 0:

echo "Unpacking failed: " & mingw

else:

result = true

except:

result = false

proc downloadMingw(): DownloadResult =

let curl = findExe"curl"

var cmd: string

if curl.len > 0:

cmd = quoteShell(curl) & " --out " & "dist" / mingw & " " & url

elif fileExists"bin/nimgrab.exe":

cmd = r"bin\nimgrab.exe " & url & " dist" / mingw

if cmd.len > 0:

if execShellCmd(cmd) != 0:

echo "download failed! ", cmd

if interactive:

openDefaultBrowser(url)

result = Manual

else:

result = Failure

else:

if unzip(): result = Success

else:

if interactive:

openDefaultBrowser(url)

result = Manual

else:

result = Failure

when defined(windows):

import registry

proc askBool(m: string): bool =

stdout.write m

if not interactive:

stdout.writeLine "y (non-interactive mode)"

return true

while true:

try:

let answer = stdin.readLine().normalize

case answer

of "y", "yes":

return true

of "n", "no":

return false

else:

echo "Please type 'y' or 'n'"

except EOFError:

quit(1)

proc askNumber(m: string; a, b: int): int =

stdout.write m

stdout.write " [" & $a & ".." & $b & "] "

if not interactive:

stdout.writeLine $a & " (non-interactive mode)"

return a

while true:

let answer = stdin.readLine()

try:

result = parseInt answer

if result < a or result > b:

raise newException(ValueError, "number out of range")

break

except ValueError:

echo "Please type in a number between ", a, " and ", b

proc patchConfig(mingw: string) =

const

cfgFile = "config/nim.cfg"

lookFor = """#gcc.path = r"$nim\dist\mingw\bin""""

replacePattern = """gcc.path = r"$1""""

try:

let cfg = readFile(cfgFile)

let newCfg = cfg.replace(lookFor, replacePattern % mingw)

if newCfg == cfg:

echo "Could not patch 'config/nim.cfg' [Error]"

echo "Reason: patch substring not found:"

echo lookFor

else:

writeFile(cfgFile, newCfg)

except IOError:

echo "Could not access 'config/nim.cfg' [Error]"

proc tryGetUnicodeValue(path, key: string; handle: HKEY): string =

try:

result = getUnicodeValue(path, key, handle)

except:

result = ""

proc addToPathEnv*(e: string) =

var p = tryGetUnicodeValue(r"Environment", "Path", HKEY_CURRENT_USER)

let x = if e.contains(Whitespace): "\"" & e & "\"" else: e

if p.len > 0:

p.add ";"

p.add x

else:

p = x

setUnicodeValue(r"Environment", "Path", p, HKEY_CURRENT_USER)

proc createShortcut(src, dest: string; icon = "") =

var cmd = "bin\\makelink.exe \"" & src & "\" \"\" \"" & dest &

".lnk\" \"\" 1 \"" & splitFile(src).dir & "\""

if icon.len != 0:

cmd.add " \"" & icon & "\" 0"

discard execShellCmd(cmd)

proc createStartMenuEntry*(override = false) =

let appdata = getEnv("APPDATA")

if appdata.len == 0: return

let dest = appdata & r"\Microsoft\Windows\Start Menu\Programs\Nim-" &

NimVersion

if dirExists(dest): return

if override or askBool("Would like to add Nim-" & NimVersion &

" to your start menu? (y/n) "):

createDir(dest)

createShortcut(getCurrentDir() / "tools" / "start.bat", dest / "Nim",

getCurrentDir() / r"icons\nim.ico")

if fileExists("doc/overview.html"):

createShortcut(getCurrentDir() / "doc" / "html" / "overview.html",

dest / "Overview")

if dirExists(r"dist\aporia-0.4.0"):

createShortcut(getCurrentDir() / r"dist\aporia-0.4.0\bin\aporia.exe",

dest / "Aporia")

proc checkGccArch(mingw: string): bool =

let gccExe = mingw / r"gcc.exe"

if fileExists(gccExe):

const nimCompat = "nim_compat.c"

writeFile(nimCompat, """typedef int

Nim_and_C_compiler_disagree_on_target_architecture[

$# == sizeof(void*) ? 1 : -1];

""" % $sizeof(int))

try:

let p = startProcess(gccExe, "", ["-c", nimCompat], nil,

{poStdErrToStdOut, poUsePath})

#echo p.outputStream.readAll()

result = p.waitForExit() == 0

except OSError, IOError:

result = false

finally:

removeFile(nimCompat)

removeFile(nimCompat.changeFileExt("o"))

proc defaultMingwLocations(): seq[string] =

proc probeDir(dir: string; result: var seq[string]) =

for k, x in walkDir(dir, relative=true):

if k in {pcDir, pcLinkToDir}:

if x.contains("mingw") or x.contains("posix"):

let dest = dir / x

probeDir(dest, result)

result.add(dest)

result = @["dist/mingw", "../mingw", r"C:\mingw"]

let pfx86 = getEnv("programfiles(x86)")

let pf = getEnv("programfiles")

when hostCPU == "i386":

probeDir(pfx86, result)

probeDir(pf, result)

else:

probeDir(pf, result)

probeDir(pfx86, result)

proc tryDirs(incompat: var seq[string]; dirs: varargs[string]): string =

let bits = $(sizeof(pointer)*8)

for d in dirs:

if dirExists d:

let x = expandFilename(d / "bin")

if checkGccArch(x): return x

else: incompat.add x

elif dirExists(d & bits):

let x = expandFilename((d & bits) / "bin")

if checkGccArch(x): return x

else: incompat.add x

proc main() =

when defined(windows):

let nimDesiredPath = expandFilename(getCurrentDir() / "bin")

let nimbleDesiredPath = expandFilename(getEnv("USERPROFILE") / ".nimble" / "bin")

let p = tryGetUnicodeValue(r"Environment", "Path",

HKEY_CURRENT_USER) & ";" & tryGetUnicodeValue(

r"System\CurrentControlSet\Control\Session Manager\Environment", "Path",

HKEY_LOCAL_MACHINE)

var nimAlreadyInPath = false

var nimbleAlreadyInPath = false

var mingWchoices: seq[string] = @[]

var incompat: seq[string] = @[]

for x in p.split(';'):

if x.len == 0: continue

let y = try: expandFilename(if x[0] == '"' and x[^1] == '"':

substr(x, 1, x.len-2) else: x)

except: ""

if y.cmpIgnoreCase(nimDesiredPath) == 0:

nimAlreadyInPath = true

elif y.cmpIgnoreCase(nimbleDesiredPath) == 0:

nimbleAlreadyInPath = true

elif y.toLowerAscii.contains("mingw"):

if dirExists(y):

if checkGccArch(y): mingWchoices.add y

else: incompat.add y

if nimAlreadyInPath:

echo "bin\\nim.exe is already in your PATH [Skipping]"

else:

if askBool("nim.exe is not in your PATH environment variable.\n" &

"Should it be added permanently? (y/n) "):

addToPathEnv(nimDesiredPath)

if nimbleAlreadyInPath:

echo nimbleDesiredPath & " is already in your PATH [Skipping]"

else:

if askBool(nimbleDesiredPath & " is not in your PATH environment variable.\n" &

"Should it be added permanently? (y/n) "):

addToPathEnv(nimbleDesiredPath)

if mingWchoices.len == 0:

# No mingw in path, so try a few locations:

let alternative = tryDirs(incompat, defaultMingwLocations())

if alternative.len == 0:

if incompat.len > 0:

echo "The following *incompatible* MingW installations exist"

for x in incompat: echo x

echo "*incompatible* means Nim and GCC disagree on the size of a pointer."

echo "No compatible MingW candidates found " &

"in the standard locations [Error]"

if askBool("Do you want to download MingW from Nim's website? (y/n) "):

let dest = getCurrentDir() / "dist"

var retry = false

case downloadMingw()

of Manual:

echo "After download, move it to: ", dest

if askBool("Download successful? (y/n) "):

while not fileExists("dist" / mingw):

echo "could not find: ", "dist" / mingw

if not askBool("Try again? (y/n) "): break

if unzip(): retry = true

of Failure: discard

of Success:

retry = true

if retry:

incompat.setLen 0

let alternative = tryDirs(incompat, defaultMingwLocations())

if alternative.len == 0:

if incompat.len > 0:

echo "The following *incompatible* MingW installations exist"

for x in incompat: echo x

echo "*incompatible* means Nim and GCC disagree on the size of a pointer."

echo "Still no compatible MingW candidates found " &

"in the standard locations [Error]"

else:

echo "Patching Nim's config to use:"

echo alternative

patchConfig(alternative)

else:

if askBool("Found a MingW directory that is not in your PATH.\n" &

alternative &

"\nShould it be added to your PATH permanently? (y/n) "):

addToPathEnv(alternative)

elif askBool("Do you want to patch Nim's config to use this? (y/n) "):

patchConfig(alternative)

elif mingWchoices.len == 1:

if askBool("MingW installation found at " & mingWchoices[0] & "\n" &

"Do you want to patch Nim's config to use this?\n" &

"(Not required since it's in your PATH!) (y/n) "):

patchConfig(mingWchoices[0])

else:

echo "Multiple MingW installations found: "

for i in 0..high(mingWchoices):

echo "[", i, "] ", mingWchoices[i]

if askBool("Do you want to patch Nim's config to use one of these? (y/n) "):

let idx = askNumber("Which one do you want to use for Nim? ",

1, len(mingWchoices))

patchConfig(mingWchoices[idx-1])

createStartMenuEntry()

else:

echo("Add ", getCurrentDir(), "/bin to your PATH...")

when isMainModule:

when defined(testdownload):

discard downloadMingw()

else:

if "-y" in commandLineParams():

interactive = false

main()

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