feat: prettify XML response (hoppscotch#3079)

packages/hoppscotch-common/package.json

@@ -92,6 +92,7 @@
     "vuedraggable-es": "^4.1.1",
     "wonka": "^4.0.15",
     "workbox-window": "^6.5.4",
+    "xml-formatter": "^3.4.1",
     "yargs-parser": "^21.1.1"
   },
   "devDependencies": {

packages/hoppscotch-common/src/components/http/RawBody.vue

@@ -84,6 +84,7 @@ import { useToast } from "@composables/toast"
 import { isJSONContentType } from "~/helpers/utils/contenttypes"
 import jsonLinter from "~/helpers/editor/linting/json"
 import { readFileAsText } from "~/helpers/functional/files"
+import xmlFormat from "xml-formatter"
 
 type PossibleContentTypes = Exclude<
   ValidContentTypes,
@@ -197,26 +198,10 @@ const prettifyRequestBody = () => {
 }
 
 const prettifyXML = (xml: string) => {
-  const PADDING = " ".repeat(2) // set desired indent size here
-  const reg = /(>)(<)(\/*)/g
-  let pad = 0
-  xml = xml.replace(reg, "$1\r\n$2$3")
-  return xml
-    .split("\r\n")
-    .map((node) => {
-      let indent = 0
-      if (node.match(/.+<\/\w[^>]*>$/)) {
-        indent = 0
-      } else if (node.match(/^<\/\w/) && pad > 0) {
-        pad -= 1
-      } else if (node.match(/^<\w[^>]*[^\/]>.*$/)) {
-        indent = 1
-      } else {
-        indent = 0
-      }
-      pad += indent
-      return PADDING.repeat(pad - indent) + node
-    })
-    .join("\r\n")
+  return xmlFormat(xml, {
+    indentation: "  ",
+    collapseContent: true,
+    lineSeparator: "\n",
+  })
 }
 </script>

packages/hoppscotch-common/src/composables/codemirror.ts

@@ -38,6 +38,7 @@ import {
   baseHighlightStyle,
 } from "@helpers/editor/themes/baseTheme"
 import { HoppEnvironmentPlugin } from "@helpers/editor/extensions/HoppEnvironment"
+import xmlFormat from "xml-formatter"
 import { platform } from "~/platform"
 // TODO: Migrate from legacy mode
 
@@ -152,6 +153,27 @@ const getLanguage = (langMime: string): Language | null => {
   return null
 }
 
+/**
+ * Uses xml-formatter to format the XML document
+ * @param doc Document to parse
+ * @param langMime Language mime type
+ * @returns Parsed document if mime type is xml, else returns the original document
+ */
+const parseDoc = (
+  doc: string | undefined,
+  langMime: string
+): string | undefined => {
+  if (langMime === "application/xml" && doc) {
+    return xmlFormat(doc, {
+      indentation: "  ",
+      collapseContent: true,
+      lineSeparator: "\n",
+    })
+  } else {
+    return doc
+  }
+}
+
 const getEditorLanguage = (
   langMime: string,
   linter: LinterDefinition | undefined,
@@ -261,7 +283,7 @@ export function useCodemirror(
     view.value = new EditorView({
       parent: el,
       state: EditorState.create({
-        doc: value.value,
+        doc: parseDoc(value.value, options.extendedEditorConfig.mode ?? ""),
         extensions,
       }),
     })

packages/hoppscotch-common/src/helpers/curl/sub_helpers/contentParser.ts

@@ -6,6 +6,7 @@ import { pipe, flow } from "fp-ts/function"
 import { tupleToRecord } from "~/helpers/functional/record"
 import { safeParseJSON } from "~/helpers/functional/json"
 import { optionChoose } from "~/helpers/functional/option"
+import xmlFormat from "xml-formatter"
 
 const isJSON = flow(safeParseJSON, O.isSome)
 
@@ -213,45 +214,18 @@ export function parseBody(
  */
 
 /**
- * Prettifies XML string
+ * Prettifies XML string using xml-formatter
  * @param sourceXml The string to format
  * @returns Indented XML string (uses spaces)
  */
 function prettifyXml(sourceXml: string) {
   return pipe(
     O.tryCatch(() => {
-      const xmlDoc = new DOMParser().parseFromString(
-        sourceXml,
-        "application/xml"
-      )
-
-      if (xmlDoc.querySelector("parsererror")) {
-        throw new Error("Unstructured Body")
-      }
-
-      const xsltDoc = new DOMParser().parseFromString(
-        [
-          // describes how we want to modify the XML - indent everything
-          '<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">',
-          '  <xsl:strip-space elements="*"/>',
-          '  <xsl:template match="para[content-style][not(text())]">', // change to just text() to strip space in text nodes
-          '    <xsl:value-of select="normalize-space(.)"/>',
-          "  </xsl:template>",
-          '  <xsl:template match="node()|@*">',
-          '    <xsl:copy><xsl:apply-templates select="node()|@*"/></xsl:copy>',
-          "  </xsl:template>",
-          '  <xsl:output indent="yes"/>',
-          "</xsl:stylesheet>",
-        ].join("\n"),
-        "application/xml"
-      )
-
-      const xsltProcessor = new XSLTProcessor()
-      xsltProcessor.importStylesheet(xsltDoc)
-      const resultDoc = xsltProcessor.transformToDocument(xmlDoc)
-      const resultXml = new XMLSerializer().serializeToString(resultDoc)
-
-      return resultXml
+      return xmlFormat(sourceXml, {
+        indentation: "  ",
+        collapseContent: true,
+        lineSeparator: "\n",
+      })
     })
   )
 }