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Watch option (#79)

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* Update karun.nim
* Watch option

Add a -w flag to watch for changes in folder and recompile.
This commit is contained in:
Jairo 2018-12-12 12:29:41 +01:00 • committed by Andreas Rumpf
commit 16008dbe52
1 changed files with 42 additions and 6 deletions
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48
karax/tools/karun.nim
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@ -1,7 +1,14 @@
## Simple tool to quickly run Karax applications. Generates the HTML ## Simple tool to quickly run Karax applications. Generates the HTML
## required to run a Karax app and opens it in a browser. ## required to run a Karax app and opens it in a browser.
import os, strutils, parseopt, browsers import os,
strutils,
parseopt,
browsers,
times,
tables
const const
css = """ css = """
@ -26,12 +33,23 @@ proc exec(cmd: string) =
if os.execShellCmd(cmd) != 0: if os.execShellCmd(cmd) != 0:
quit "External command failed: " & cmd quit "External command failed: " & cmd
proc build(name: string, rest: string, selectedCss: string, run: bool) =
echo("Building...")
createDir("nimcache")
exec("nim js --out:nimcache/" & name & ".js " & rest)
let dest = "nimcache" / name & ".html"
writeFile(dest, html % [name, selectedCss])
if run: openDefaultBrowser(dest)
proc main = proc main =
var op = initOptParser() var op = initOptParser()
var rest = op.cmdLineRest var rest = op.cmdLineRest
var file = "" var file = ""
var run = false var run = false
var selectedCss = "" var selectedCss = ""
var watch = false
var files: Table[string, Time] = {"path": getLastModificationTime(".")}.toTable
while true: while true:
op.next() op.next()
case op.kind case op.kind
@ -48,15 +66,33 @@ proc main =
if op.key == "r": if op.key == "r":
run = true run = true
rest = rest.replace("-r ") rest = rest.replace("-r ")
if op.key == "w":
watch = true
rest = rest.replace("-w ")
of cmdArgument: file = op.key of cmdArgument: file = op.key
of cmdEnd: break of cmdEnd: break
if file.len == 0: quit "filename expected" if file.len == 0: quit "filename expected"
let name = file.splitFile.name let name = file.splitFile.name
createDir("nimcache") build(name, rest, selectedCss, run)
exec("nim js --out:nimcache/" & name & ".js " & rest) echo("after build")
let dest = "nimcache" / name & ".html" if watch:
writeFile(dest, html % [name, selectedCss]) # TODO: launch http server
if run: openDefaultBrowser(dest) while true:
sleep(300)
for path in walkDirRec("."):
if ".git" in path:
continue
if files.hasKey(path):
if files[path] != getLastModificationTime(path):
echo("File changed: " & path)
build(name, rest, selectedCss, run)
files[path] = getLastModificationTime(path)
else:
files[path] = getLastModificationTime(path)
main() main()