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#
#
# The Nim Compiler
# (c) Copyright 2017 Andreas Rumpf
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
## Module that implements ``gorge`` for the compiler.
import msgs, os, osproc, streams, options,
lineinfos, pathutils
when defined(nimPreviewSlimSystem):
import std/syncio
import ../dist/checksums/src/checksums/sha1
proc readOutput(p: Process): (string, int) =
result[0] = ""
var output = p.outputStream
while not output.atEnd:
result[0].add(output.readLine)
result[0].add("\n")
if result[0].len > 0:
result[0].setLen(result[0].len - "\n".len)
result[1] = p.waitForExit
proc opGorge*(cmd, input, cache: string, info: TLineInfo; conf: ConfigRef): (string, int) =
let workingDir = parentDir(toFullPath(conf, info))
result = ("", 0)
if cache.len > 0:
let h = secureHash(cmd & "\t" & input & "\t" & cache)
let filename = toGeneratedFile(conf, AbsoluteFile("gorge_" & $h), "txt").string
var f: File = default(File)
if optForceFullMake notin conf.globalOptions and open(f, filename):
result = (f.readAll, 0)
f.close
return
var readSuccessful = false
try:
var p = startProcess(cmd, workingDir,
options={poEvalCommand, poStdErrToStdOut})
if input.len != 0:
p.inputStream.write(input)
p.inputStream.close()
result = p.readOutput
p.close()
readSuccessful = true
# only cache successful runs:
if result[1] == 0:
writeFile(filename, result[0])
except IOError, OSError:
if not readSuccessful:
when defined(nimLegacyGorgeErrors):
result = ("", -1)
else:
result = ("Error running startProcess: " & getCurrentExceptionMsg(), -1)
else:
try:
var p = startProcess(cmd, workingDir,
options={poEvalCommand, poStdErrToStdOut})
if input.len != 0:
p.inputStream.write(input)
p.inputStream.close()
result = p.readOutput
p.close()
except IOError, OSError:
when defined(nimLegacyGorgeErrors):
result = ("", -1)
else:
result = ("Error running startProcess: " & getCurrentExceptionMsg(), -1)
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