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Diffstat (limited to 'compiler/gorgeimpl.nim')
-rw-r--r-- | compiler/gorgeimpl.nim | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/compiler/gorgeimpl.nim b/compiler/gorgeimpl.nim new file mode 100644 index 000000000..2c51752cd --- /dev/null +++ b/compiler/gorgeimpl.nim @@ -0,0 +1,57 @@ +# +# +# 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, securehash, os, osproc, streams, strutils, options + +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): (string, int) = + let workingDir = parentDir(info.toFullPath) + if cache.len > 0:# and optForceFullMake notin gGlobalOptions: + let h = secureHash(cmd & "\t" & input & "\t" & cache) + let filename = options.toGeneratedFile("gorge_" & $h, "txt") + var f: File + if 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 + readSuccessful = true + # only cache successful runs: + if result[1] == 0: + writeFile(filename, result[0]) + except IOError, OSError: + if not readSuccessful: result = ("", -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 + except IOError, OSError: + result = ("", -1) |