Revert "refactor: remove manual redirects fix"

This reverts commit 1de56ca.
We want to keep this around and run it if its needed
due to regressions like openzim/zim-tools#227

src/site-transforms.ts

@@ -88,6 +88,34 @@ export const fixFavicon = ({
   cli.action.stop()
 }
 
+
+// Fix any broken redirects (https://github.com/openzim/zim-tools/issues/224)
+export const fixRedirects = async ({
+  unpackedZimDir,
+  wikiFolder
+}: Directories) => {
+  const done = `${unpackedZimDir}/redirects_fixed`
+  if (existsSync(done)) {
+    return
+  }
+
+  cli.action.start('  Fixing redirects ')
+  const fixupLog = `${unpackedZimDir}_redirect-fixups.log`
+  if (existsSync(fixupLog)) {
+    unlinkSync(fixupLog)
+  }
+  const output = process.env.DEBUG ? `>> ${fixupLog}` : '> /dev/null'
+  const util = require('util')
+  const exec = util.promisify(require('child_process').exec)
+  // redirect files are smaller than 1k so we can skip bigger ones, making the performance acceptable
+  const findRedirects = String.raw`find ${wikiFolder} -type f -size -800c -exec fgrep -l "0;url=A/" {} + -exec sed -i "s|0;url=A/|0;url=|" {} + ${output} || true`
+  const { stdout, stderr } = await exec(findRedirects, {env: {'LC_ALL': 'C'}})
+  if (!stderr) closeSync(openSync(done, 'w'))
+  cli.action.stop()
+  if (stdout) console.log('redirect fix stdout:', stdout)
+  if (stderr) console.error('redirect fix stderr:', stderr)
+}
+
 // https://github.com/ipfs/distributed-wikipedia-mirror/issues/80
 export const fixExceptions = async ({
   unpackedZimDir,

src/zim-to-website.ts

@@ -6,6 +6,7 @@ import {
   includeSourceZim,
   copyImageAssetsIntoWiki,
   fixFavicon,
+  fixRedirects,
   fixExceptions,
   // generateMainPage,
   insertIndexRedirect,
@@ -49,6 +50,7 @@ export const zimToWebsite = async (options: Options) => {
   fixFavicon(directories)
   moveArticleFolderToWiki(directories)
   await fixExceptions(directories)
+  await fixRedirects(directories)
   insertIndexRedirect(options)
   appendJavascript(options, directories)
   // usually main page is ok, so we dont need below