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-rw-r--r--packages/sol-resolver/src/resolvers/name_resolver.ts66
1 files changed, 66 insertions, 0 deletions
diff --git a/packages/sol-resolver/src/resolvers/name_resolver.ts b/packages/sol-resolver/src/resolvers/name_resolver.ts
new file mode 100644
index 000000000..6849b7610
--- /dev/null
+++ b/packages/sol-resolver/src/resolvers/name_resolver.ts
@@ -0,0 +1,66 @@
+import * as fs from 'fs';
+import * as _ from 'lodash';
+import * as path from 'path';
+
+import { ContractSource } from '../types';
+
+import { EnumerableResolver } from './enumerable_resolver';
+
+export class NameResolver extends EnumerableResolver {
+ private _contractsDir: string;
+ constructor(contractsDir: string) {
+ super();
+ this._contractsDir = contractsDir;
+ }
+ public resolveIfExists(lookupContractName: string): ContractSource | undefined {
+ const SOLIDITY_FILE_EXTENSION = '.sol';
+ let contractSource: ContractSource | undefined;
+ const onFile = (filePath: string) => {
+ const contractName = path.basename(filePath, SOLIDITY_FILE_EXTENSION);
+ if (contractName === lookupContractName) {
+ const source = fs.readFileSync(filePath).toString();
+ contractSource = {
+ source,
+ path: filePath,
+ };
+ return true;
+ }
+ return undefined;
+ };
+ this._traverseContractsDir(this._contractsDir, onFile);
+ return contractSource;
+ }
+ public getAll(): ContractSource[] {
+ const SOLIDITY_FILE_EXTENSION = '.sol';
+ const contractSources: ContractSource[] = [];
+ const onFile = (filePath: string) => {
+ const contractName = path.basename(filePath, SOLIDITY_FILE_EXTENSION);
+ const source = fs.readFileSync(filePath).toString();
+ const contractSource = {
+ source,
+ path: filePath,
+ };
+ contractSources.push(contractSource);
+ };
+ this._traverseContractsDir(this._contractsDir, onFile);
+ return contractSources;
+ }
+ // tslint:disable-next-line:prefer-function-over-method
+ private _traverseContractsDir(dirPath: string, onFile: (filePath: string) => true | void): boolean {
+ let dirContents: string[] = [];
+ try {
+ dirContents = fs.readdirSync(dirPath);
+ } catch (err) {
+ throw new Error(`No directory found at ${dirPath}`);
+ }
+ for (const fileName of dirContents) {
+ const entryPath = path.join(dirPath, fileName);
+ const isDirectory = fs.lstatSync(entryPath).isDirectory();
+ const isComplete = isDirectory ? this._traverseContractsDir(entryPath, onFile) : onFile(entryPath);
+ if (isComplete) {
+ return isComplete;
+ }
+ }
+ return false;
+ }
+}