Add paragraph token replacer

src/templater/paragraph-token-replacer.ts

@@ -0,0 +1,72 @@
+import { Element } from "xml-js";
+import * as xml from "xml";
+
+import { Formatter } from "@export/formatter";
+import { Text } from "@file/paragraph/run/run-components/text";
+
+import { toJson } from "./util";
+import { IRenderedParagraphNode } from "./run-renderer";
+
+enum ReplaceMode {
+    START,
+    MIDDLE,
+    END,
+}
+
+const formatter = new Formatter();
+
+export const replaceTokenInParagraphElement = ({
+    paragraphElement,
+    renderedParagraph,
+    originalText,
+    replacementText,
+}: {
+    readonly paragraphElement: Element;
+    readonly renderedParagraph: IRenderedParagraphNode;
+    readonly originalText: string;
+    readonly replacementText: string;
+}): Element => {
+    const startIndex = renderedParagraph.text.indexOf(originalText);
+    const endIndex = startIndex + originalText.length - 1;
+
+    let replaceMode = ReplaceMode.START;
+
+    for (const run of renderedParagraph.runs) {
+        for (const { text, index, start, end } of run.parts) {
+            switch (replaceMode) {
+                case ReplaceMode.START:
+                    if (startIndex >= start) {
+                        const partToReplace = run.text.substring(Math.max(startIndex, start), Math.min(endIndex, end) + 1);
+                        // We use a token to split the text if the replacement is within the same run
+                        // If not, we just add text to the middle of the run later
+                        const firstPart = text.replace(partToReplace, replacementText);
+                        patchTextElement(paragraphElement.elements![run.index].elements![index], firstPart);
+                        replaceMode = ReplaceMode.MIDDLE;
+                        continue;
+                    }
+                    break;
+                case ReplaceMode.MIDDLE:
+                    if (endIndex <= end) {
+                        const lastPart = text.substring(endIndex - start + 1);
+                        patchTextElement(paragraphElement.elements![run.index].elements![index], lastPart);
+                        replaceMode = ReplaceMode.END;
+                    } else {
+                        patchTextElement(paragraphElement.elements![run.index].elements![index], "");
+                    }
+                    break;
+                default:
+            }
+        }
+    }
+
+    return paragraphElement;
+};
+
+const patchTextElement = (element: Element, text: string): Element => {
+    const textJson = toJson(xml(formatter.format(new Text({ text }))));
+
+    // eslint-disable-next-line functional/immutable-data
+    element.elements = textJson.elements;
+
+    return element;
+};

src/templater/replacer.ts

@@ -1,27 +1,51 @@
-import { Formatter } from "@export/formatter";
-import { Paragraph, TextRun } from "@file/paragraph";
 import { Element } from "xml-js";
 import * as xml from "xml";
 
+import { Formatter } from "@export/formatter";
+import { Paragraph, TextRun } from "@file/paragraph";
+
 import { IPatch } from "./from-docx";
 import { toJson } from "./util";
 import { IRenderedParagraphNode } from "./run-renderer";
+import { replaceTokenInParagraphElement } from "./paragraph-token-replacer";
 
 const formatter = new Formatter();
 
+const SPLIT_TOKEN = "ɵ";
+
 export const replacer = (json: Element, options: IPatch, renderedParagraphs: readonly IRenderedParagraphNode[]): Element => {
     for (const child of options.children) {
         if (child instanceof Paragraph) {
             console.log("is para");
         } else if (child instanceof TextRun) {
-            const text = formatter.format(child);
-            const textJson = toJson(xml(text));
             console.log("paragrapghs", JSON.stringify(renderedParagraphs, null, 2));
-            const paragraphElement = goToElementFromPath(json, renderedParagraphs[0].path);
-            console.log(paragraphElement);
-            // eslint-disable-next-line functional/immutable-data
-            paragraphElement.elements = textJson.elements;
-            console.log("is text", text);
+            for (const renderedParagraph of renderedParagraphs) {
+                const textJson = toJson(xml(formatter.format(child)));
+                const paragraphElement = goToElementFromPath(json, renderedParagraph.path);
+
+                const startIndex = renderedParagraph.text.indexOf(options.text);
+                const endIndex = startIndex + options.text.length - 1;
+
+                if (startIndex === 0 && endIndex === renderedParagraph.text.length - 1) {
+                    // Easy case where the text is the entire paragraph
+                    // eslint-disable-next-line functional/immutable-data
+                    paragraphElement.elements = textJson.elements;
+                } else {
+                    // Hard case where the text is only part of the paragraph
+
+                    console.log("hard case");
+                    console.log("paragraphElement", JSON.stringify(paragraphElement, null, 2));
+
+                    replaceTokenInParagraphElement({
+                        paragraphElement,
+                        renderedParagraph,
+                        originalText: options.text,
+                        replacementText: SPLIT_TOKEN,
+                    });
+
+                    console.log("paragraphElement after", JSON.stringify(paragraphElement, null, 2));
+                }
+            }
         }
     }