solcjs not compatible with console

[louisabraham]

Hi, I'm having an issue with solcjs when I try to compile something from the console :

> admin.setSolc("/usr/local/bin/solcjs")
"0.4.2+commit.af6afb04.mod.Emscripten.clang\n\npath: /usr/local/bin/solcjs"
> eth.compile.solidity('contract C{}')
solc: exit status 1
Must provide a file

Specify --help for available options

    at web3.js:3119:20
    at web3.js:6023:15
    at web3.js:4995:36
    at <anonymous>:1:1

I did not understand until I setSolc to a debugging python program :

import sys
print(sys.stdin.read(), file=sys.stderr)
print(sys.argv, file=sys.stderr)
sys.exit(1)

(when you use setSolc, you have to return an exit code of 0, but you can modify the program again before you compile)

The issue seems to be that solcjs has no input_file parameter, and is passed the program via stdin.
Is it possible to modify it to accept input from stdin ?

[louisabraham]

The command is called with args : '--bin', '--abi', '--userdoc', '--devdoc', '--add-std', '--optimize', '-o', '/var/folders/ns/bvd4v4bd62jg8qvwyn02dtdh0000gn/T/solc719193878'

I tried to use the soljs compiler anyway, replacing again the command with a python script :

import sys
import subprocess

tmp = subprocess.check_output("echo $TMPDIR".split()).decode()
inp = sys.stdin.read()
args = ["/usr/local/bin/solcjs"] + sys.argv[1:]
if inp:
    path = tmp + "solcc123123"
    open(path, 'w').write(inp)
    subprocess.call(args + [path])
else:
    subprocess.call(args)

I get now the error :

solc: error reading user doc: open /var/folders/ns/bvd4v4bd62jg8qvwyn02dtdh0000gn/T/solc515219141/C.docuser: no such file or directory

And indeed, none of the options '--userdoc', '--devdoc', '--add-std' is listed in the --help menu of solcjs.
How am I supposed to use solcjs with the console ? It would be really great, because solcjs is far more simple to deploy than the cpp implementation that needs to be compiled.

[chriseth]

If you use solc-js, you can call compile as a native javascript function, instead of using eth.compile.solidity. solc-js is not compatible with setSolc, these are just two completely different programs.

[axic]

Duplicate of #43.