look for contract import in dapp dir and node_modules

lib/modules/solidity/solcP.js

@@ -1,5 +1,20 @@
 let solc;
 
+let fs = require('fs-extra');
+let path = require('path');
+
+function findImports(filename) {
+  console.dir(filename);
+  if (!fs.existsSync(filename)) {
+    if (fs.existsSync(path.join('./node_modules/', filename))) {
+      return {contents: fs.readFileSync(path.join('./node_modules/', filename)).toString()};
+    } else {
+      return {error: 'File not found'};
+    }
+  }
+  return {contents: fs.readFileSync(filename).toString()};
+}
+
 process.on('message', function (msg) {
   if (msg.action === 'loadCompiler') {
     solc = require(msg.solcLocation);
@@ -8,7 +23,7 @@ process.on('message', function (msg) {
 
   if (msg.action === 'compile') {
     // TODO: only available in 0.4.11; need to make versions warn about this
-    let output = solc.compileStandardWrapper(JSON.stringify(msg.jsonObj));
+    let output = solc.compileStandardWrapper(JSON.stringify(msg.jsonObj), findImports);
     process.send({result: "compilation", output: output});
   }
 });

test_apps/test_app/another_folder/another_test.sol

@@ -0,0 +1,21 @@
+pragma solidity ^0.4.17;
+
+contract SimpleStorageTest2 {
+  uint public storedData;
+
+  function() public payable { }
+
+  function SimpleStorage(uint initialValue) public {
+    storedData = initialValue;
+  }
+
+  function set(uint x) public {
+    storedData = x;
+  }
+
+  function get() public view returns (uint retVal) {
+    return storedData;
+  }
+
+}
+

test_apps/test_app/embark.json

@@ -16,7 +16,7 @@
   "config": "config/",
   "versions": {
     "web3.js": "1.0.0-beta.27",
-    "solc": "0.4.17",
+    "solc": "0.4.21",
     "ipfs-api": "17.2.6"
   },
   "plugins": {

test_apps/test_app/package.json

@@ -18,6 +18,7 @@
     "jquery": "^1.11.3",
     "react": "^16.0.0",
     "react-bootstrap": "^0.32.0",
-    "react-dom": "^16.2.0"
+    "react-dom": "^16.2.0",
+    "zeppelin-solidity": "^1.8.0"
   }
 }

test_apps/test_app/some_folder/test_contract.sol

@@ -0,0 +1,23 @@
+pragma solidity ^0.4.17;
+
+import "another_folder/another_test.sol";
+import "zeppelin-solidity/contracts/ownership/Ownable.sol";
+
+contract SimpleStorageTest is Ownable {
+  uint public storedData;
+
+  function() public payable { }
+
+  function SimpleStorage(uint initialValue) public {
+    storedData = initialValue;
+  }
+
+  function set(uint x) public {
+    storedData = x;
+  }
+
+  function get() public view returns (uint retVal) {
+    return storedData;
+  }
+
+}