79 lines
2.6 KiB
Nim
79 lines
2.6 KiB
Nim
import os, osproc, streams, strtabs
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from posix import kill
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type HandleProcMsgCB* = proc (outMsg: TaintedString, errMsg: TaintedString, cmd: string): void
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proc sendMsg*(h: HandleProcMsgCB, outMsg: TaintedString, errMsg: TaintedString = nil, cmd: string = "strawboss"): void =
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if h != nil: h(outMsg, errMsg, cmd)
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proc raiseEx*(reason: string): void =
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raise newException(Exception, reason)
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proc envToTable*(): StringTableRef =
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result = newStringTable()
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for k, v in envPairs():
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result[k] = v
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proc waitForWithOutput*(p: Process, msgCB: HandleProcMsgCB,
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procCmd: string = ""):
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tuple[output: TaintedString, error: TaintedString, exitCode: int] =
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var pout = outputStream(p)
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var perr = errorStream(p)
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result = (TaintedString"", TaintedString"", -1)
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var line = newStringOfCap(120).TaintedString
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while true:
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if pout.readLine(line):
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msgCB.sendMsg(line, nil, procCmd)
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result[0].string.add(line.string)
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result[0].string.add("\n")
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elif perr.readLine(line):
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msgCB.sendMsg(nil, line, procCmd)
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result[1].string.add(line.string)
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result[1].string.add("\n")
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else:
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result[2] = peekExitCode(p)
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if result[2] != -1: break
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close(p)
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proc exec*(command: string, workingDir: string = "",
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args: openArray[string] = [], env: StringTableRef = nil,
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options: set[ProcessOption] = {poUsePath},
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msgCB: HandleProcMsgCB = nil):
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tuple[output: TaintedString, error: TaintedString, exitCode: int]
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{.tags: [ExecIOEffect, ReadIOEffect], gcsafe.} =
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var p = startProcess(command, workingDir, args, env, options)
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result = waitForWithOutput(p, msgCb, command)
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proc loadEnv*(): StringTableRef =
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result = newStringTable()
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for k, v in envPairs():
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result[k] = v
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proc makeProcMsgHandler*(outSink, errSink: File): HandleProcMsgCB =
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result = proc(outMsg, errMsg: TaintedString, cmd: string): void {.closure.} =
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let prefix = if cmd != nil: cmd & ": " else: ""
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if outMsg != nil: outSink.writeLine(prefix & outMsg)
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if errMsg != nil: errSink.writeLine(prefix & errMsg)
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proc makeProcMsgHandler*(outSink, errSink: Stream): HandleProcMsgCB =
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result = proc(outMsg, errMsg: TaintedString, cmd: string): void {.closure.} =
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let prefix = if cmd != nil: cmd & ": " else: ""
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if outMsg != nil: outSink.writeLine(prefix & outMsg)
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if errMsg != nil: errSink.writeLine(prefix & errMsg)
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proc combineProcMsgHandlers*(a, b: HandleProcMsgCB): HandleProcMsgCB =
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if a == nil: result = b
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elif b == nil: result = a
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else:
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result = proc(cmd: string, outMsg, errMsg: TaintedString): void =
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a(cmd, outMsg, errMsg)
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b(cmd, outMsg, errMsg)
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