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author | Leonid Logvinov <logvinov.leon@gmail.com> | 2018-04-17 02:47:28 +0800 |
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committer | GitHub <noreply@github.com> | 2018-04-17 02:47:28 +0800 |
commit | d263f7783fabe89cc9714b596068eccdc5babc1c (patch) | |
tree | 54a5c8f0a88320f3df8330d95506aea96e808bd3 /packages/sol-resolver/src/resolvers/npm_resolver.ts | |
parent | 1fcf3c5dc44d10648e14d6b10c174930eecf27b1 (diff) | |
parent | d8ef76fd5efe63ec8f6205a73494ce388e64391f (diff) | |
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Merge pull request #512 from 0xProject/feature/resolver
Dependencies resolver for deployer
Diffstat (limited to 'packages/sol-resolver/src/resolvers/npm_resolver.ts')
-rw-r--r-- | packages/sol-resolver/src/resolvers/npm_resolver.ts | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/packages/sol-resolver/src/resolvers/npm_resolver.ts b/packages/sol-resolver/src/resolvers/npm_resolver.ts new file mode 100644 index 000000000..2c0a44aad --- /dev/null +++ b/packages/sol-resolver/src/resolvers/npm_resolver.ts @@ -0,0 +1,34 @@ +import * as fs from 'fs'; +import * as path from 'path'; + +import { ContractSource } from '../types'; + +import { Resolver } from './resolver'; + +export class NPMResolver extends Resolver { + private _packagePath: string; + constructor(packagePath: string) { + super(); + this._packagePath = packagePath; + } + public resolveIfExists(importPath: string): ContractSource | undefined { + if (!importPath.startsWith('/')) { + const [packageName, ...other] = importPath.split('/'); + const pathWithinPackage = path.join(...other); + let currentPath = this._packagePath; + const ROOT_PATH = '/'; + while (currentPath !== ROOT_PATH) { + const lookupPath = path.join(currentPath, 'node_modules', packageName, pathWithinPackage); + if (fs.existsSync(lookupPath)) { + const fileContent = fs.readFileSync(lookupPath).toString(); + return { + source: fileContent, + path: lookupPath, + }; + } + currentPath = path.dirname(currentPath); + } + } + return undefined; + } +} |