Suppress validation kinds based on file pattern

See eclipse-lemminx/lemminx#1275

Signed-off-by: azerr <azerr@redhat.com>

README.md

@@ -1,6 +1,6 @@
 # XML Language Support by Red Hat
 
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@@ -99,6 +99,7 @@ The following settings are supported:
  * [`xml.validation.disallowDocTypeDecl`](https://github.com/redhat-developer/vscode-xml/blob/main/docs/Validation.md#disallow-doc-type-declarations): Enable/disable if a fatal error is thrown if the incoming document contains a DOCTYPE declaration. Default is `false`.
 * [`xml.validation.resolveExternalEntities`](https://github.com/redhat-developer/vscode-xml/blob/main/docs/Validation.md#resolve-external-entities): Enable/disable resolve of external entities. Default is `false`. Disabled in untrusted workspace.
 * [`xml.validation.noGrammar`](https://github.com/redhat-developer/vscode-xml/blob/main/docs/Preferences.md#grammar): The message severity when a document has no associated grammar. Defaults to `hint`.
+* [`xml.validation.filters`](https://github.com/redhat-developer/vscode-xml/blob/main/docs/Validation.md#xmlvalidationfilters): Allows XML validation filter to be associated to file name patterns.
 * [`xml.symbols.enabled`](https://github.com/redhat-developer/vscode-xml/blob/main/docs/Symbols.md#xmlsymbolsenabled): Enable/disable document symbols (Outline). Default is `true`.
 * `xml.symbols.excluded`: Disable document symbols (Outline) for the given file name patterns. Updating file name patterns does not automatically reload the Outline view for the relevant file(s). Each file must either be reopened or changed, in order to trigger an Outline view reload.
 * [`xml.symbols.maxItemsComputed`](https://github.com/redhat-developer/vscode-xml/blob/main/docs/Symbols.md#xmlsymbolsmaxitemscomputed): The maximum number of outline symbols and folding regions computed (limited for performance reasons). Default is `5000`.

docs/Validation.md

@@ -513,3 +513,44 @@ Now, update the xsi:schemaLocation with bad location hint
 ```
 
 In `always` you will have error, in `onValidSchema` you will have none error.
+
+## xml.validation.filters
+
+An XML validation filter gives you the capability to defines some validation rule for a given pattern file. For instance if you wish to disable validation for all files which have `*.myxml` file extension but not for all other XML files, you must declare this filter in the settings.json:
+
+```json
+"xml.validation.filters": [
+   // Declaration of validation filter to disable validation for all *.myxml files.
+   {
+    "pattern": "**.myxml",
+    "enabled": false
+  }
+]
+```
+
+You can use other validation settings (enabled, noGrammar, etc). For instance if you wish to remove the warning no grammar for all files which have `*.myxml` file extension but not for all other XML files, you must declare this filter in the settings.json:
+
+```json
+"xml.validation.filters": [
+   // Declaration of validation filter to disable validation for all *.myxml files.
+   {
+    "pattern": "**.myxml",
+    "noGrammar": "ignore"
+  }
+]
+```
+
+By default, vscode-xml uses this default validation filter:
+
+```json
+"xml.validation.filters": [
+  {
+    "pattern": "**.exsd",
+    "enabled": false
+  },
+  {
+    "pattern": "**{.project,.classpath,plugin.xml,feature.xml,category.xml,.target,.product}",
+    "noGrammar": "ignore"
+  }
+]
+```

package.json

@@ -509,6 +509,31 @@
           "markdownDescription": "Enable/disable document symbols (Outline). Default is `true`. No symbols are given if `\"xml.symbols.enabled\": false`.",
           "scope": "window"
         },
+        "xml.validation.filters": {
+          "type": "array",
+          "default": [
+            {
+              "pattern": "**.exsd",
+              "enabled": false
+            },
+            {
+              "pattern": "**{.project,.classpath,plugin.xml,feature.xml,category.xml,.target,.product}",
+              "noGrammar": "ignore"
+            }
+          ],
+          "items": {
+            "type": "object",
+            "properties": {
+              "pattern": {
+                "type": "string",
+                "markdownDescription": "File glob pattern. Example: `**/*.Format.ps1xml`\n\nMore information on the glob syntax: https://docs.oracle.com/javase/tutorial/essential/io/fileOps.html#glob"
+              }
+            },
+            "required": [
+              "pattern"
+            ]
+          }
+        },
         "xml.symbols.excluded": {
           "type": "array",
           "default": [],
@@ -639,4 +664,4 @@
       }
     ]
   }
-}
+}