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import { Uri } from '@faubulous/mentor-rdf';
import { container } from 'tsyringe';
import { ServiceToken } from '@src/services/tokens';
import { IDocumentContextService } from '@src/services/document';
import { XmlDocument } from '@src/languages/xml/xml-document';
import { XmlFeatureProvider } from '@src/languages/xml/xml-feature-provider';
/**
* Interface for regular expression based text replacements.
*/
interface TextReplacement {
/**
* The regular expression to match the text to be replaced.
*/
fromExpression: RegExp;
/**
* The replacement text.
*/
toValue: string;
}
/**
* Provides renaming for URIs, resources labels and prefixes.
*/
export class XmlRenameProvider extends XmlFeatureProvider implements vscode.RenameProvider {
private get contextService() {
return container.resolve<IDocumentContextService>(ServiceToken.DocumentContextService);
}
public provideRenameEdits(document: vscode.TextDocument, position: vscode.Position, newName: string): vscode.ProviderResult<vscode.WorkspaceEdit> {
const context = this.contextService.getDocumentContext(document, XmlDocument);
if (!context) {
return undefined;
}
const edits = new vscode.WorkspaceEdit();
// Handle rename of local names. Either of prefixed names or in IRIs.
const nameRange = this._getLocalNameEditRange(document, position);
if (nameRange && nameRange.contains(position)) {
const iri = context.getIriAtPosition(position);
if (!iri) {
return undefined;
}
const replacements = this._getLocalNameTextReplacements(context, iri, newName);
return this.getWorkspaceEdits(document, replacements);
}
// Handle rename of prefixes and prefix definitions.
const prefixRange = this._getPrefixEditRange(document, position);
if (prefixRange && prefixRange.contains(position)) {
const prefix = document.getText(prefixRange);
if (!context.namespaces[prefix]) {
return undefined;
}
const replacements = this._getPrefixTextReplacements(context, prefix, newName);
return this.getWorkspaceEdits(document, replacements);
}
return edits;
}
/**
* Get the workspace edits for the given text replacements.
* @param document The document to be edited.
* @param replacements The replacements to apply.
* @returns A workspace edit containing the replacements.
*/
getWorkspaceEdits(document: vscode.TextDocument, replacements: TextReplacement[]): vscode.WorkspaceEdit {
const edits = new vscode.WorkspaceEdit();
for (const replacement of replacements) {
const documentText = document.getText();
let match: RegExpExecArray | null;
while ((match = replacement.fromExpression.exec(documentText)) !== null) {
const matchIndex = match.index;
const matchLength = match[0].length;
const start = document.positionAt(matchIndex);
const end = document.positionAt(matchIndex + matchLength);
const range = new vscode.Range(start, end);
edits.replace(document.uri, range, replacement.toValue);
}
}
return edits;
}
/**
* Get the range of a prefix to be edited in the XML document at the given position.
* @param document The XML document.
* @param position The position where to look for the prefix.
* @returns The range of the prefix to be edited, or `undefined` if not found.
*/
private _getPrefixEditRange(document: vscode.TextDocument, position: vscode.Position): vscode.Range | undefined {
const context = this.contextService.getDocumentContext(document, XmlDocument);
if (!context) {
return undefined;
}
const line = document.lineAt(position.line).text;
const prefixedNameRange = context.getPrefixedNameRangeAtPosition(line, position);
if (prefixedNameRange) {
const prefixedName = document.getText(prefixedNameRange);
if (prefixedName.startsWith('xmlns:')) {
const start = prefixedNameRange.start.translate(0, 6);
const end = prefixedNameRange.end;
return new vscode.Range(start, end);
} else {
const start = prefixedNameRange.start;
const end = prefixedNameRange.start.translate(0, prefixedName.indexOf(":"));
return new vscode.Range(start, end);
}
}
const attributeValueRange = context.getAttributeValueRangeAtPosition(line, position);
if (attributeValueRange) {
const attributeValue = document.getText(attributeValueRange);
Eif (attributeValue.startsWith('&')) {
const start = attributeValueRange.start.translate(0, 1);
const end = attributeValueRange.end.translate(0, attributeValue.indexOf(";"));
return new vscode.Range(start, end);
}
}
const entityRange = context.getEntityRangeAtPosition(line, position);
return entityRange;
}
/**
* Get the text replacements for a prefix in the XML document.
* @param context The XML document context.
* @param prefix The prefix to be replaced.
* @param newPrefix The new prefix to replace with.
* @returns An array of text replacements.
*/
private _getPrefixTextReplacements(context: XmlDocument, prefix: string, newPrefix: string): TextReplacement[] {
const namespaceIri = context.namespaces[prefix];
if (!namespaceIri) {
return [];
}
const result: TextReplacement[] = [];
result.push({
fromExpression: new RegExp(`xmlns:${prefix}`, 'g'),
toValue: `xmlns:${newPrefix}`
});
result.push({
fromExpression: new RegExp(`${prefix}:`, 'g'),
toValue: `${newPrefix}:`
});
result.push({
fromExpression: new RegExp(`ENTITY ${prefix}`, 'g'),
toValue: `ENTITY ${newPrefix}`
});
result.push({
fromExpression: new RegExp(`&${prefix};`, 'g'),
toValue: `&${newPrefix};`
});
return result;
}
/**
* Get the range of a local name to be edited in the XML document at the given position.
* @param document The XML document.
* @param position The position where to look for the local name.
* @returns The range of the local name to be edited, or `undefined` if not found.
*/
private _getLocalNameEditRange(document: vscode.TextDocument, position: vscode.Position): vscode.Range | undefined {
const context = this.contextService.getDocumentContext(document, XmlDocument);
if (!context) {
return undefined;
}
const line = document.lineAt(position.line).text;
const prefixedNameRange = context.getPrefixedNameRangeAtPosition(line, position);
// Match XML prefixed attribute names (e.g. "rdf:about") which cannot occur inside attribute values.
if (prefixedNameRange) {
const prefixedName = document.getText(prefixedNameRange);
if (!prefixedName.startsWith('xmlns:') && !prefixedName.startsWith('xml:')) {
const start = prefixedNameRange.start.translate(0, prefixedName.indexOf(":") + 1);
const end = prefixedNameRange.end;
return new vscode.Range(start, end);
}
}
const attributeValueRange = context.getAttributeValueRangeAtPosition(line, position);
if (!attributeValueRange) {
return undefined;
}
// Match entity references (e.g. "&ex;") inside attribute values.
const attributeValue = document.getText(attributeValueRange);
if (attributeValue.trim().startsWith('&')) {
const startColumn = attributeValueRange.start.character + attributeValue.indexOf(";") + 1;
const endColumn = attributeValueRange.start.character + attributeValue.length;
return new vscode.Range(
new vscode.Position(position.line, startColumn),
new vscode.Position(position.line, endColumn)
);
}
// Match local names (e.g. "Example") inside attribute values that must be resolved using the document base IRI.
const attributeNameRange = context.getAttributeNameRangeNearPosition(line, position);
const attributeName = document.getText(attributeNameRange);
if (attributeName !== 'rdf:about' && attributeName !== 'rdf:resource' && attributeName !== 'rdf:datatype') {
// We only support renaming of rdf:about, rdf:resource and rdf:datatype as these must be IRIs or local names.
return undefined;
}
if (attributeValue.includes(':')) {
// Attribute values only support
const localName = Uri.getLocalPart(attributeValue);
if (!localName || localName.length === 0) {
return undefined;
}
const startColumn = line.lastIndexOf(localName);
const endColumn = line.lastIndexOf(localName) + localName.length;
return new vscode.Range(
new vscode.Position(position.line, startColumn),
new vscode.Position(position.line, endColumn)
);
} else {
// Local names which need to be resolved using the document base IRI.
return attributeValueRange;
}
}
/**
* Get the text replacements for a local name in the XML document.
* @param context The XML document context.
* @param iri The IRI which includes the local name to be replaced.
* @param newName The new local name to replace with.
* @returns An array of text replacements.
*/
private _getLocalNameTextReplacements(context: XmlDocument, iri: string, newName: string): TextReplacement[] {
const localName = Uri.getLocalPart(iri);
const namespaceIri = Uri.getNamespaceIri(iri);
if (!iri.includes(':') || namespaceIri.length === 0 || !localName || localName.length === 0) {
return [];
}
const result: TextReplacement[] = [];
result.push({
fromExpression: new RegExp(`${iri}`, 'g'),
toValue: `${namespaceIri + newName}`
});
const prefix = context.getPrefixForNamespaceIri(namespaceIri);
if (prefix) {
result.push({
fromExpression: new RegExp(`${prefix}:${localName}`, 'g'),
toValue: `${prefix}:${newName}`
});
result.push({
fromExpression: new RegExp(`&${prefix};${localName}`, 'g'),
toValue: `&${prefix};${newName}`
});
}
if (context.baseIri && iri.startsWith(context.baseIri)) {
result.push({
fromExpression: new RegExp(`="${localName}"`, 'g'),
toValue: `="${newName}"`
});
}
return result;
}
} |