4 Commits
0.4.0 ... 0.6.1

2 changed files with 50 additions and 24 deletions

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@ -1,4 +1,4 @@
import docopt, json, osproc, posix, nre, streams, strtabs, terminal, unicode
import docopt, json, osproc, posix, nre, streams, strtabs, tables, terminal, unicode
import os except sleep
import strutils except toUpper, toLower
@ -8,6 +8,8 @@ type
docopt*: Table[string, Value]
json*: JsonNode
TermColor = ForegroundColor or BackgroundColor
proc getVal*(cfg: CombinedConfig, key, default: string): string =
let argKey = "--" & key
let envKey = key.replace('-', '_').toUpper
@ -39,20 +41,20 @@ type HandleProcMsgCB* = proc (outMsg: TaintedString,
errMsg: TaintedString, cmd: string): void
proc sendMsg*(h: HandleProcMsgCB, outMsg: TaintedString,
errMsg: TaintedString = nil, cmd: string = ""): void =
errMsg: TaintedString = "", cmd: string = ""): void =
if h != nil: h(outMsg, errMsg, cmd)
proc makeProcMsgHandler*(outSink, errSink: File, prefixCmd: bool = true): HandleProcMsgCB =
result = proc(outMsg, errMsg: TaintedString, cmd: string): void {.closure.} =
let prefix = if cmd == nil or not prefixCmd: "" else: cmd & ": "
if outMsg != nil: outSink.writeLine(prefix & outMsg)
if errMsg != nil: errSink.writeLine(prefix & errMsg)
let prefix = if cmd.len == 0 or not prefixCmd: "" else: cmd & ": "
if outMsg.len > 0: outSink.writeLine(prefix & outMsg)
if errMsg.len > 0: errSink.writeLine(prefix & errMsg)
proc makeProcMsgHandler*(outSink, errSink: Stream, prefixCmd: bool = true): HandleProcMsgCB =
result = proc(outMsg, errMsg: TaintedString, cmd: string): void {.closure.} =
let prefix = if cmd == nil or not prefixCmd: "" else: cmd & ": "
if outMsg != nil: outSink.writeLine(prefix & outMsg)
if errMsg != nil: errSink.writeLine(prefix & errMsg)
let prefix = if cmd.len == 0 or not prefixCmd: "" else: cmd & ": "
if outMsg.len > 0: outSink.writeLine(prefix & outMsg)
if errMsg.len > 0: errSink.writeLine(prefix & errMsg)
proc combineProcMsgHandlers*(a, b: HandleProcMsgCB): HandleProcMsgCB =
if a == nil: result = b
@ -70,9 +72,9 @@ proc waitFor*(p: Process, msgCB: HandleProcMsgCB, procCmd: string = ""): int =
var line = newStringOfCap(120).TaintedString
while true:
if pout.readLine(line):
msgCB.sendMsg(line, nil, procCmd)
msgCB.sendMsg(line, "", procCmd)
elif perr.readLine(line):
msgCB.sendMsg(nil, line, procCmd)
msgCB.sendMsg("", line, procCmd)
else:
result = peekExitCode(p)
if result != -1: break
@ -91,15 +93,15 @@ proc execWithOutput*(command: string, workingDir:string = "",
args: openArray[string] = [], env: StringTableRef = nil,
options: set[ProcessOption] = {poUsePath},
msgCB: HandleProcMsgCB = nil):
tuple[output: TaintedString, error: TaintedString, exitCode: int] =
tuple[output, error: TaintedString, exitCode: int] =
result = (TaintedString"", TaintedString"", -1)
var outSeq, errSeq: seq[TaintedString]
outSeq = @[]; errSeq = @[]
var outputCollector = combineProcMsgHandlers(msgCB,
proc(outMsg, errMsg: TaintedString, cmd: string): void {.closure.} =
if outMsg != nil: outSeq.add(outMsg)
if errMsg != nil: errSeq.add(errMsg))
if outMsg.len > 0: outSeq.add(outMsg)
if errMsg.len > 0: errSeq.add(errMsg))
result[2] = exec(command, workingDir, args, env, options, outputCollector)
result[0] = outSeq.join("\n")
@ -145,15 +147,15 @@ proc daemonize*(pidfile, si, so, se: string, daemonMain: proc(): void): Pid =
flushFile(stdout)
flushFile(stderr)
if not si.isNil and si != "":
if si.len > 0:
fi = open(si, fmRead)
discard dup2(getFileHandle(fi), getFileHandle(stdin))
if not so.isNil and so != "":
if so.len > 0:
fo = open(so, fmAppend)
discard dup2(getFileHandle(fo), getFileHandle(stdout))
if not se.isNil and so != "":
if se.len > 0:
fe = open(se, fmAppend)
discard dup2(getFileHandle(fe), getFileHandle(stderr))
@ -172,14 +174,38 @@ proc daemonize*(pidfile, si, so, se: string, daemonMain: proc(): void): Pid =
return pid1
proc termFG*(color: ForegroundColor, bright, bold = false): string =
const termReset* = "\e[0;m"
proc termColor*(color: TermColor, bright, bold = false): string =
var colorVal = ord(color)
if bright: inc(colorVal, 60)
return "\e[" & $colorVal & (if bold: ";1" else: "") & "m"
proc termBG*(color: BackgroundColor, bright, bold = false): string =
var colorVal = ord(color)
if bright: inc(colorVal, 60)
return "\e[" & $colorVal & "m"
proc withColor*(str: string, color: TermColor, bright, bold = false): string =
return termColor(color, bright, bold) & str
const termReset* = "\e[0;m"
let STRIP_ANSI_REGEX = re"\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]"
proc stripAnsi*(str: string): string = return str.replace(STRIP_ANSI_REGEX, "")
proc queryParamsToCliArgs*(queryParams: Table[string, string]): seq[string] =
result = @[]
for k,v in queryParams:
# support ?arg1=val1&arg2=val2 -> cmd val1 val2
if k.startsWith("arg"): result.add(v)
else :
result[1].add("--" & k)
if v != "true": result[1].add(v) # support things like ?verbose=true -> cmd --verbose
proc queryParamsToCliArgs*(queryParams: StringTableRef): seq[string] =
result = @[]
for k,v in queryParams:
# support ?arg1=val1&arg2=val2 -> cmd val1 val2
if k.startsWith("arg"): result.add(v)
else :
result[1].add("--" & k)
if v != "true": result[1].add(v) # support things like ?verbose=true -> cmd --verbose

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@ -1,11 +1,11 @@
# Package
version = "0.4.0"
version = "0.6.1"
author = "Jonathan Bernard"
description = "Helper functions for writing command line interfaces."
license = "MIT"
# Dependencies
requires @["nim >= 0.18.0", "docopt"]
requires @["nim >= 0.19.0", "docopt >= 0.6.8"]