Outillage : préfixage des listings avec un $ non-sélectionnable

bin/build.js

@@ -3,6 +3,7 @@
 const {join} = require('path');
 const processor = require('asciidoctor.js')();
 const runnerExtension = require('asciidoctor-extension-interactive-runner');
+const bash$Extension = require('../src/asciidoctor-extension-bash-dollar');
 const BUILD_DIR = 'dist';
 
 var DEFAULT_ATTRIBUTES = [
@@ -20,6 +21,7 @@ var DEFAULT_ATTRIBUTES = [
 const FILES = process.argv.slice(2);
 
 processor.Extensions.register(runnerExtension);
+processor.Extensions.register(bash$Extension);
 
 FILES.forEach(SOURCE_FILE => {
   const destinationFile = SOURCE_FILE.replace('.adoc', '.html');

src/asciidoctor-extension-bash-dollar.js

@@ -0,0 +1,44 @@
+'use strict';
+
+const isBash = (b) => b.getAttribute('language', 'bash');
+const index = (blocks, block) => blocks.findIndex(el => el === block);
+
+module.exports = function bash$Extension () {
+  this.treeProcessor(function(){
+    this.process(doc => {
+      doc.findBy({ context: 'listing' }, isBash).forEach(block => {
+        const {parent} = block;
+
+        let isModified = false;
+
+        const lines = block.lines.map(line => {
+          if (line[0] === '$' && line[1] === ' ') {
+            isModified = true;
+            return '<span class=dollar></span>' + line.slice(2);
+          }
+
+          return line;
+        });
+
+        if (isModified) {
+          const blockIndex = index(parent.getBlocks(), block);
+
+          block.lines = lines;
+          block.$remove_sub('specialcharacters');
+
+          parent.blocks[blockIndex] = block;
+        }
+      });
+    });
+  });
+
+  this.docinfoProcessor(function(){
+    this.process(doc => {
+      return `<style type="text/css">
+.listingblock .dollar::before{
+  content: "$ ";
+  opacity: .5; }
+</style>`;
+    });
+  });
+};