Hash line ending agnostic and import exclusion bug (#1095)

* Make hashing line ending agnostic.
Fix bug where imports were not excluded properly.
Added obj to exclusions.

* Add missing wildcard.

Co-authored-by: Chris McConnell <chrimc>

packages/dialog/README.md

@@ -36,7 +36,7 @@ _See code: [src/commands/dialog/index.ts](https://github.com/microsoft/botframew
 
 ## `bf dialog:merge PATTERNS`
 
-Merge `<kind>.schema` and `<kind>[.<locale>].uischema` definitions from a project and its dependencies into a single .schema for describing .dialog files and a per locale .uischema for describing how Composer shows them.  If a dependent package has an "exported" directory it is copied to /<package> in the --imports directory.
+Merge `<kind>.schema` and `<kind>[.<locale>].uischema` definitions from a project and its dependencies into a single .schema for describing .dialog files and a per locale .uischema for describing how Composer shows them.  If a dependent package has an "exported" directory it is copied to /<package> in the --imports directory. You can make use of negative patterns like !**/generated/** to exclude particular directories or files, although some directories like bin, obj and node_modules are automatically excluded.
 
 ```
 USAGE

packages/dialog/src/commands/dialog/merge.ts

@@ -7,7 +7,7 @@ import { Command, flags } from '@microsoft/bf-cli-command'
 import { SchemaMerger } from '../../library/schemaMerger'
 
 export default class DialogMerge extends Command {
-    static description = 'Merge `<kind>.schema` and `<kind>[.<locale>].uischema` definitions from a project and its dependencies into a single .schema for describing .dialog files and a per locale .uischema for describing how Composer shows them.  If a dependent package has an "exported" directory it is copied to /<package> in the --imports directory.'
+    static description = 'Merge `<kind>.schema` and `<kind>[.<locale>].uischema` definitions from a project and its dependencies into a single .schema for describing .dialog files and a per locale .uischema for describing how Composer shows them.  If a dependent package has an "exported" directory it is copied to /<package> in the --imports directory. You can make use of negative patterns like !**/generated/** to exclude particular directories or files, although some directories like bin, obj and node_modules are automatically excluded.'
 
     static args = [
         { name: 'patterns', required: true, description: 'Any number of glob regex patterns to match .csproj, .nuspec or package.json files.' },

packages/dialog/src/library/hash.ts

@@ -9,7 +9,8 @@ import * as os from 'os'
 import * as ppath from 'path'
 
 export function computeHash(val: string): string {
-    return crypto.createHash('md5').update(val).digest('hex')
+    // We write out OS.EOL, but want hash independent of endings
+    return crypto.createHash('md5').update(val.replace(/\r/, '')).digest('hex')
 }
 
 // Normalize to OS line endings

packages/dialog/src/library/schemaMerger.ts

@@ -153,8 +153,9 @@ class ComponentNode {
                 patterns.push(`!${ppath.join(root, 'node_modules', '**')}`)
             } else if (this.metadata.path.endsWith('.csproj')) {
                 patterns.push(`!${ppath.join(root, 'bin', '**')}`)
+                patterns.push(`!${ppath.join(root, 'obj', '**')}`)
             }
-            patterns.push(`!${imports}`)
+            patterns.push(`!${ppath.join(ppath.resolve(imports), '**')}`)
             patterns.push(`!${ppath.join(root, 'test', '**')}`)
             patterns.push(`!${ppath.join(root, 'tests', '**')}`)
             patterns = [...patterns, ...negativePatterns]