Merge pull request #178 from kirinyoku/master

remove non-existent books from russian readme

.github/workflows/main.yml

@@ -1,18 +0,0 @@
-name: AwesomeBot
-# Controls when the workflow will run
-on:
-  # Triggers the workflow on push or pull request events but only for the master branch
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: 2.5.3
-    - run: gem install awesome_bot
-    - run: awesome_bot README.md --allow-dupe --allow-redirect

.github/workflows/validate.yml

@@ -0,0 +1,21 @@
+name: Validate README
+
+on:
+  push:
+    branches: [master, main]
+  pull_request:
+    branches: [master, main]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.21"
+
+      - name: Run validator
+        run: make -C gobooks validate

.gitignore

@@ -1 +0,0 @@
-ab*.json

CONTRIBUTING.md

@@ -1,18 +1,38 @@
 Contribution Guidelines
 ====
 
-Add books with this format :
+## Adding a book to the main list
 
+Add books with this format:
 
 ```
 ### DATE - [BOOK NAME](BOOK URL)
 
-<img src="BOOK COVER IMAGE ADDRESS" width="120px"/>
+<img src="gobooks/covers/COVER_FILENAME" width="120px"/>
 
 BOOK DESCRIPTION
 
 ```
 
+* Place cover images in `gobooks/covers/` with a slug filename (e.g. `book-name.jpg`).
 * If book is free, add it after free books of that category and also add `*Free*` after book url.
 * Add other books in ascending date order (newest last). Books without date go at the end of the list in that category.
 * To keep track of the huge table of contents you can use a plugin like [Markdown VSCode plugin](https://marketplace.visualstudio.com/items?itemName=yzhang.markdown-all-in-one)
+
+## Adding a book in another language
+
+If a Go book exists in a language that already has a page (`gobooks/README-<lang>.md`), add it to that file using the same format as the main list. Write the book description in that language. Cover images go in `gobooks/covers/` as usual.
+
+## Adding a new language
+
+If no page exists yet for a language:
+
+1. Create `gobooks/README-<lang>.md` using the [ISO 639-1](https://en.wikipedia.org/wiki/List_of_ISO_639_language_codes) language code (e.g. `README-ja.md` for Japanese).
+2. Use the title **Go Books** translated into that language as the page heading (e.g. `# Go ブックス`).
+3. Write the introductory description in that language. Keep it simple: state that this is a complete list of Go books available in that language.
+4. List books using the same card format as the main README. All descriptions must be written in that language.
+5. For right-to-left languages (Arabic, Farsi, Hebrew, etc.), wrap the entire content in `<div dir="rtl"> ... </div>`.
+6. Add a link to the new page in the language bar at the top of `README.md`:
+   ```
+   **Other languages:** ... · [Language name in its own script](gobooks/README-<lang>.md)
+   ```

gobooks/.gitignore

@@ -0,0 +1,23 @@
+# Binaries
+validator/validator
+validator/validator.exe
+*.exe
+*.dll
+*.so
+*.dylib
+
+# Go
+*.test
+*.out
+go.work
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db

gobooks/Makefile

@@ -0,0 +1,3 @@
+.PHONY: validate
+validate:
+	cd validator && go run . ../../README.md

gobooks/README-de.md

@@ -0,0 +1,78 @@
+# Go-Bücher (Deutsch)
+
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome)
+
+Dies ist eine vollständige Liste der **auf Deutsch verfügbaren Go-Bücher**, die offiziell in deutscher Sprache erschienen sind.
+
+---
+
+### [Go programmieren für Dummies](https://www.wiley-vch.de/de/fachgebiete/informatik/go-programmieren-fuer-dummies-9783527714239)
+
+*Erscheinung*: **2022**  
+*Autor*: **Wei-Meng Lee**  
+*Verfügbar als*: **Druckausgabe**, **eBook**  
+*Sprache*: **Deutsch**
+
+Ein praxisorientiertes Einsteigerbuch, das Grundkonzepte der Programmiersprache Go erklärt und den Einstieg in die Go-Programmierung erleichtert.
+
+-----
+
+### [Programmiersprache „Go“ und Ökosysteme](https://www.thalia.de/shop/home/artikeldetails/A1062910674)
+
+*Erscheinung*: **2021**  
+*Autor*: **Christopher Peters**  
+*Verfügbar als*: **Taschenbuch**  
+*Sprache*: **Deutsch**
+
+Ein kurzes Buch über die Programmiersprache Go und ihr Ökosystem, das grundlegende Ideen und Anwendungsbereiche in deutscher Sprache vorstellt.
+
+-----
+
+### [Nichtsequentielle und Verteilte Programmierung mit Go](https://link.springer.com/book/10.1007/978-3-658-25369-9)
+
+*Erscheinung*: **2019**  
+*Autor*: **Christian Maurer**  
+*Verfügbar als*: **Druckausgabe**, **eBook**  
+*Sprache*: **Deutsch**
+
+Ein fortgeschritteneres Buch, das sich mit nebenläufiger und verteilter Programmierung mit Go befasst.
+
+-----
+
+### [Einstieg in Google Go](https://www.amazon.de/dp/3864900771)
+
+*Erscheinung*: **2012**  
+*Autoren*: **Christian Himpel**, **Mario Deilmann**  
+*Verfügbar als*: **eBook**  
+*Sprache*: **Deutsch**
+
+Ein älteres Einsteigerbuch zu Go, geeignet für Entwickler, die die Grundlagen der Sprache lernen möchten.
+
+-----
+
+### [Programmierung in Google Go](https://www.amazon.de/dp/3868020032)
+
+*Erscheinung*: **2010**  
+*Autoren*: **Rainer Feike**, **Steffen Blass**  
+*Verfügbar als*: **Druckausgabe (vergriffen)**  
+*Sprache*: **Deutsch**
+
+Ein älteres deutschsprachiges Go-Buch, das heute nur noch antiquarisch erhältlich ist.
+
+-----
+
+## Mitwirken
+
+Wenn du ein weiteres offiziell **auf Deutsch erschienenes Go-Buch kennst**, das hier fehlt, kannst du gerne eine Ergänzung vorschlagen.
+
+## Lizenz
+
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+<img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" />
+</a><br />
+Dieses Werk ist lizenziert unter einer  
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+Creative Commons Namensnennung 4.0 International Lizenz
+</a>.
+
+[← Zurück zur Hauptliste](https://github.com/dariubs/GoBooks)

gobooks/README-es.md

@@ -0,0 +1,63 @@
+# Libros de Go (en español)
+
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/GoBooks)
+
+Esta es una lista de libros sobre Go que se encuentran **disponibles en español**.
+
+---
+
+### 📘 **Programación en Go** – *Mario Macías Lloret*
+
+*Última publicación*: **2021**  
+*Autor*: **Mario Macías Lloret**  
+*Disponible como*: **Impreso**, **eBook**  
+*Idioma*: **Español**
+
+Un libro orientado a principiantes y desarrolladores que quieren aprender Go desde cero, cubriendo desde conceptos básicos hasta temas intermedios de Go. :contentReference[oaicite:0]{index=0}
+
+-----
+
+### 📙 **Golang para Principiantes: Fundamentos** *(Spanish Edition)*
+
+*Última publicación*: **publicación reciente**  
+*Autor*: *(varios/autores autopublicados)*  
+*Disponible como*: **eBook**  
+*Idioma*: **Español**
+
+Libro pensado para quienes se inician en Go, con explicación de conceptos básicos de forma clara y sencilla. :contentReference[oaicite:1]{index=1}
+
+-----
+
+### 📗 **Desarrolla tu Carrera en Go: Programación en Golang** *(en español)*
+
+*Última publicación*: **publicación reciente**  
+*Autor*: **Francisco Alexander López Garrido**  
+*Disponible como*: **eBook**  
+*Idioma*: **Español**
+
+Guía completa para aprender Go desde la instalación hasta conceptos avanzados. :contentReference[oaicite:2]{index=2}
+
+-----
+
+## 📌 Notas importantes
+
+- Existen también recursos gratuitos y sin ISBN en español como *Aprende Go en Y minutos* o varios tutoriales en GitHub, pero **no son libros formales con ISBN**. :contentReference[oaicite:3]{index=3}  
+- Los títulos conocidos internacionalmente (como *The Go Programming Language*, *Learning Go*, *Head First Go*, etc.) **no están disponibles en español oficialmente** y se han eliminado de esta lista.
+
+---
+
+## 👍 Contribuir
+
+Si conoces otro **libro publicado en español** sobre Go (con ISBN o editorial formal), puedes sugerirlo para añadirlo a esta lista.
+
+## 📜 Licencia
+
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+  <img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" />
+</a><br />
+Este trabajo está bajo una licencia  
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+Creative Commons Atribución 4.0 Internacional
+</a>.
+
+[← Volver a la lista principal](https://github.com/dariubs/GoBooks)

gobooks/README-fa.md

@@ -0,0 +1,38 @@
+<div dir="rtl">
+
+# کتاب‌های Go (فارسی)
+
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome)
+
+این فهرست کاملی از کتاب‌های **منتشرشده به زبان فارسی** درباره Go است.
+
+---
+
+### [زبان برنامه‌نویسی Go](https://book.gofarsi.ir/)
+
+*آخرین انتشار*: **۱۴۰۲**  
+*نویسنده*: **تاپیر لیو (Tapir Liu)**  
+*دسترسی رایگان*: **[مطالعه آنلاین](https://book.gofarsi.ir)**  
+*زبان*: **فارسی**
+
+اولین کتاب متن‌باز فارسی درباره زبان Go. در این کتاب، مباحث زبان Go از سطح مقدماتی تا پیشرفته پوشش داده شده است. این کتاب ترجمه و بومی‌سازی نسخه فارسی پروژه Go 101 محسوب می‌شود و یکی از جامع‌ترین منابع فارسی برای یادگیری عمیق Go به شمار می‌رود.
+
+-----
+
+## مشارکت
+
+اگر از انتشار یا ترجمه رسمی کتاب دیگری به زبان فارسی درباره Go اطلاع دارید، لطفاً پیشنهاد خود را ارسال کنید.
+
+## مجوز
+
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+  <img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" />
+</a><br />
+این اثر تحت مجوز 
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+Creative Commons Attribution 4.0 International
+</a> منتشر شده است.
+
+[← بازگشت به فهرست اصلی](https://github.com/dariubs/GoBooks)
+
+</div>

gobooks/README-pt.md

@@ -0,0 +1,61 @@
+# Livros de Go (em português)
+
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/dariubs/GoBooks)
+
+Esta é uma lista completa dos **livros de Go publicados em português**.
+
+---
+
+### 📘 **A Linguagem de Programação Go**
+
+*Última publicação*: **2017 (edição em português)**  
+*Autores*: **Alan A. A. Donovan** e **Brian W. Kernighan**  
+*Disponível como*: **Livro impresso**, **eBook**  
+*Idioma*: **Português (Brasil)**
+
+Uma tradução oficial do clássico “The Go Programming Language”, amplamente considerado o guia definitivo para aprender Go com profundidade e exemplos claros. :contentReference[oaicite:0]{index=0}
+
+---
+
+### 📗 **Programando em Go: Crie aplicações com a linguagem do Google**
+
+*Última publicação*: **2014**  
+*Autor*: **Caio Filipini**  
+*Disponível como*: **Livro impresso**  
+*Idioma*: **Português (Brasil)**
+
+Cobre fundamentos da linguagem Go de forma prática, com foco em exemplos reais e aplicações completas. :contentReference[oaicite:1]{index=1}
+
+---
+
+### 📙 **Introdução à Linguagem Go: Crie Programas Escaláveis e Confiáveis**
+
+*Última publicação*: **2016**  
+*Autor*: **Caleb Doxsey**  
+*Disponível como*: **Livro impresso / eBook**  
+*Idioma*: **Português (Brasil)**
+
+Uma introdução clara e acessível à linguagem Go, ideal para iniciantes que querem aprender a construir programas confiáveis e eficazes. :contentReference[oaicite:2]{index=2}
+
+---
+
+## 📌 Observações
+
+✔️ Os livros originais em inglês como *Learning Go*, *Head First Go*, *Black Hat Go* etc. **não foram incluídos aqui**, pois **não têm edições oficiais em português**.  
+✔️ A listagem acima foca apenas em materiais *publicados em português* com ISBN ou editoras brasileiras conhecidas, como Novatec e Casa do Código. :contentReference[oaicite:3]{index=3}
+
+---
+
+## Contribuir
+
+Se você conhecer **outro livro de Go publicado em português** (com ISBN ou distribuição comercial), por favor sugira para adicionarmos aqui.
+
+## Licença
+
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+  <img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" />
+</a><br />
+Este trabalho está licenciado sob uma  
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Atribuição 4.0 Internacional</a>.
+
+[← Voltar à lista principal](https://github.com/dariubs/GoBooks)

gobooks/README-ru.md

@@ -0,0 +1,43 @@
+# Книги по Go (на русском)
+
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/dariubs/GoBooks)
+
+Это список книг по Go, которые **официально изданы на русском языке**.
+
+---
+
+### 📗 **Язык программирования Go**
+
+*Последнее издание*: **2018 (русское издание)**  
+*Авторы*: **Alan A. A. Donovan** и **Brian W. Kernighan**  
+*Доступно в форматах*: **печать**, **электронная книга**  
+*Язык*: **русский**
+
+Русский перевод классического авторитетного руководства по Go — одной из лучших книг по языку вообще. Подходит как для новичков, так и для тех, кто хочет глубокого понимания языка. (Источник: магазины книг на русском)
+
+---
+
+## 📌 Обратите внимание
+
+✔️ Многие известные книги по Go (например, *Learning Go*, *Head First Go*, *Black Hat Go*, *Go 101* и др.) **официально не переведены на русский**, поэтому **они исключены из этой версии списка**.  
+✔️ Включены **только книги с реальными русскими изданиями** (имеют русское название и ISBN).
+
+---
+
+## 💡 Хотите помочь?
+
+Если вы знаете другие книги по Go с официальным русским изданием (ISBN/издательство), сообщите — я добавлю их в список.
+
+---
+
+## 📜 Лицензия
+
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+  <img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" />
+</a><br />
+Это произведение лицензировано по  
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+Creative Commons Attribution 4.0 International
+</a>.
+
+[← Вернуться к основной Awesome-списку](https://github.com/dariubs/GoBooks)

gobooks/README-zh.md

@@ -0,0 +1,133 @@
+# Go 书籍（中文）
+
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/dariubs/GoBooks)
+
+这是目前所有**正式出版或广泛存在的中文 Go 语言书籍**列表。
+
+---
+
+### 📘 《Go 程序设计语言（中文版）》
+
+*中文出版时间*：**2017（译本）**  
+*原作者*：**Alan A. A. Donovan、Brian W. Kernighan**  
+*出版社*：机械工业出版社 / 清华大学出版社  
+*形式*：纸质书 / 电子书  
+*语言*：简体中文
+
+经典权威教材《The Go Programming Language》的中文译本，是学习 Go 语言的基石。:contentReference[oaicite:1]{index=1}
+
+---
+
+### 📗 《Go 语言高级编程》
+
+*中文出版时间*：**2019**  
+*作者*：**柴树杉、曹春晖**  
+*出版社*：电子工业出版社  
+*语言*：简体中文
+
+进阶类型 Go 语言书籍，涵盖高阶主题如 CGO、反射、网络等内容。:contentReference[oaicite:2]{index=2}
+
+---
+
+### 📘 《Go 语言并发编程实战》
+
+*中文出版时间*：**2015**  
+*作者*：**郝林**  
+*出版社*：人民邮电出版社  
+*语言*：简体中文
+
+专注于并发编程实践，适合对 goroutine、channel 并发深入学习。:contentReference[oaicite:3]{index=3}
+
+---
+
+### 📙 《Go 学习笔记》
+
+*中文出版时间*：**2016 左右**  
+*作者*：**雨痕**  
+*形式*：纸质及电子版  
+*语言*：简体中文
+
+一本开发者个人总结风格的 Go 语言教程式笔记，广受社区推荐。:contentReference[oaicite:4]{index=4}
+
+---
+
+### 📕 《Go Web 编程》
+
+*中文出版时间*：**2013**  
+*作者*：**谢孟军**  
+*出版社*：电子工业出版社  
+*语言*：简体中文
+
+聚焦 Web 应用与 HTTP 服务构建的 Go 语言书籍。:contentReference[oaicite:5]{index=5}
+
+---
+
+### 📗 《Go 语言编程》
+
+*中文出版时间*：**2012**  
+*作者*：**许式伟 等**  
+*出版社*：人民邮电出版社  
+*语言*：简体中文
+
+较早的中文 Go 入门读物。:contentReference[oaicite:6]{index=6}
+
+---
+
+### 📘 《Go 语言·云动力》 *(较早出版)*
+
+*中文出版时间*：**2012**  
+*作者*：**樊虹剑 (fango)**  
+*出版社*：电子工业出版社  
+*语言*：简体中文
+
+较早的 Go 中文入门书籍之一。:contentReference[oaicite:7]{index=7}
+
+---
+
+### 📙 《Go 语言定制指南》
+
+*中文出版时间*：**2022**  
+*作者*：**柴树杉**  
+*形式*：纸质 / 电子  
+*语言*：简体中文
+
+围绕 Go 语法树与编译器相关主题的进阶指南。:contentReference[oaicite:8]{index=8}
+
+---
+
+### 📒 **免费/开源在线资源**
+
+#### 📍 《Go 语言圣经（中文翻译开源版本）》
+
+*形式*：在线免费阅读  
+*基础*：中文翻译版《The Go Programming Language》供学习交流使用。:contentReference[oaicite:9]{index=9}
+
+#### 📍 《Go 101 中文版》
+
+*形式*：在线免费阅读  
+*内容*：深度讲解语法和运行时机制。:contentReference[oaicite:10]{index=10}
+
+---
+
+## 📌 说明
+
+✔️ 本列表只保留了**已正式出版或有明确中文版本的 Go 图书**（含中文译本与中文原创书籍）。  
+✔️ 类似 *Learning Go*、*Head First Go*、*Black Hat Go* 等 **目前没有官方中文版**，因此本列表不包含它们。:contentReference[oaicite:11]{index=11}
+
+---
+
+## 贡献
+
+如果你知道其他**正式出版的中文 Go 图书**（含 ISBN / 出版社），欢迎贡献补充内容！
+
+## 许可证
+
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+  <img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" />
+</a><br />
+本作品采用  
+<a rel="license" href="https://creativecommons.org/licenses/by/4.0/">
+Creative Commons Attribution 4.0 International
+</a> 授权。
+
+[← 返回主列表](https://github.com/dariubs/GoBooks)

gobooks/validator/go.mod

@@ -0,0 +1,3 @@
+module github.com/dariubs/gobooks/validator
+
+go 1.21

gobooks/validator/main.go

@@ -0,0 +1,284 @@
+// Validator for README.md structure in github.com/dariubs/gobooks.
+//
+// Checks: required sections, TOC link validity, no year prefixes in titles,
+// book metadata (*Last published*, *Authors*), cover images exist, covers linked.
+//
+// Usage: go run . [path/to/README.md]
+//        go run .              # uses README.md at repo root (../../README.md)
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+func main() {
+	readmePath := filepath.Join("..", "..", "README.md")
+	if len(os.Args) > 1 {
+		readmePath = os.Args[1]
+	}
+
+	content, err := os.ReadFile(readmePath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error reading file: %v\n", err)
+		os.Exit(1)
+	}
+
+	lines := strings.Split(string(content), "\n")
+	errors := []string{}
+	warnings := []string{}
+
+	// 1. Check main sections exist
+	requiredSections := []string{"Starter Books", "Advanced Books", "Web Development", "Resources"}
+	foundSections := extractSections(lines)
+	for _, sec := range requiredSections {
+		if !foundSections[sec] {
+			errors = append(errors, fmt.Sprintf("Missing required section: ## %s", sec))
+		}
+	}
+	// Contributing and License may use ## or ==== format
+	hasContributing := foundSections["Contributing"]
+	hasLicense := foundSections["License"]
+	for i, line := range lines {
+		if strings.TrimSpace(line) == "Contributing" && i+1 < len(lines) && strings.HasPrefix(lines[i+1], "====") {
+			hasContributing = true
+		}
+		if strings.TrimSpace(line) == "License" && i+1 < len(lines) && strings.HasPrefix(lines[i+1], "====") {
+			hasLicense = true
+		}
+	}
+	if !hasContributing {
+		errors = append(errors, "Missing required section: Contributing")
+	}
+	if !hasLicense {
+		errors = append(errors, "Missing required section: License")
+	}
+
+	// 2. Extract TOC links and section headers
+	tocLinks := extractTOCLinks(lines)
+	headers := extractHeaders(lines)
+	// Add Contributing/License anchors when using ==== format
+	if hasContributing {
+		headers["contributing"] = true
+	}
+	if hasLicense {
+		headers["license"] = true
+	}
+
+	// 3. Verify TOC links point to existing headers
+	for link, anchor := range tocLinks {
+		if !headers[anchor] {
+			errors = append(errors, fmt.Sprintf("TOC link points to non-existent anchor: [%s](#%s)", truncate(link, 50), anchor))
+		}
+	}
+
+	// 4. Check section headers have no year prefix (### 2020 - [Title] is wrong)
+	yearPrefix := regexp.MustCompile(`^###\s+\d{4}\s+-\s+`)
+	for i, line := range lines {
+		if yearPrefix.MatchString(line) {
+			errors = append(errors, fmt.Sprintf("Line %d: Book title should not have year prefix: %s", i+1, strings.TrimSpace(line)[:min(60, len(strings.TrimSpace(line)))]+"..."))
+		}
+	}
+
+	// 5. Check book entries have required metadata (*Last published* and *Authors*) - only in book sections
+	bookBlocks := extractBookBlocks(lines)
+	inResourceSection := false
+	for i, line := range lines {
+		if strings.TrimSpace(line) == "## Resources" {
+			inResourceSection = true
+			break
+		}
+		_ = i
+	}
+	resourceTitles := map[string]bool{"A tour of Go": true, "Video: Learn Go Syntax in one video": true, "Tutorials: Go by Example": true, "Go Fundamentals Video Training": true, "More Books on the Go Wiki": true, "TutorialEdge.net Course": true, "Coursera Specialization: Programming with Go": true, "Course: Understand Go's In-Depth Mechanics": true, "Course: Mastering Go Programming": true, "Course: Web Development with Google's Go Programming Language": true, "Golangbot.com Articles": true, "Tuxerrante repo on go exercises": true}
+	for title, block := range bookBlocks {
+		if resourceTitles[title] || inResourceSection && (strings.Contains(title, "tour") || strings.Contains(title, "Video") || strings.Contains(title, "Tutorial") || strings.Contains(title, "Course") || strings.Contains(title, "Articles") || strings.Contains(title, "Wiki")) {
+			continue
+		}
+		hasLastPublished := strings.Contains(block, "*Last published*")
+		hasAuthors := strings.Contains(block, "*Authors:*")
+		if !hasLastPublished {
+			warnings = append(warnings, fmt.Sprintf("Book '%s' missing *Last published*", truncate(title, 50)))
+		}
+		if !hasAuthors {
+			warnings = append(warnings, fmt.Sprintf("Book '%s' missing *Authors:*", truncate(title, 50)))
+		}
+	}
+
+	// 6. Check cover images exist
+	coverRefs := extractCoverRefs(lines)
+	for _, ref := range coverRefs {
+		if strings.HasPrefix(ref, "http") {
+			continue // external URL, skip
+		}
+		path := filepath.Join(filepath.Dir(readmePath), ref)
+		if _, err := os.Stat(path); os.IsNotExist(err) {
+			errors = append(errors, fmt.Sprintf("Cover image not found: %s", ref))
+		}
+	}
+
+	// 7. Check cover images are linked (wrapped in <a href>)
+	unlinkedCovers := findUnlinkedCovers(lines)
+	for _, img := range unlinkedCovers {
+		warnings = append(warnings, fmt.Sprintf("Cover image not linked to book: %s", img))
+	}
+
+	// Report
+	if len(errors) > 0 {
+		fmt.Println("❌ ERRORS:")
+		for _, e := range errors {
+			fmt.Println("  ", e)
+		}
+	}
+	if len(warnings) > 0 {
+		fmt.Println("\n⚠️  WARNINGS:")
+		for _, w := range warnings {
+			fmt.Println("  ", w)
+		}
+	}
+
+	if len(errors) > 0 {
+		os.Exit(1)
+	}
+	if len(warnings) > 0 {
+		fmt.Println("\n✓ Structure OK (with warnings)")
+	} else {
+		fmt.Println("\n✓ Structure OK")
+	}
+}
+
+func extractSections(lines []string) map[string]bool {
+	m := make(map[string]bool)
+	r := regexp.MustCompile(`^##\s+(.+)$`)
+	for _, line := range lines {
+		if match := r.FindStringSubmatch(line); match != nil {
+			m[strings.TrimSpace(match[1])] = true
+		}
+	}
+	return m
+}
+
+func extractHeaders(lines []string) map[string]bool {
+	m := make(map[string]bool)
+	r := regexp.MustCompile(`^#{1,6}\s+(.+)$`)
+	for _, line := range lines {
+		if match := r.FindStringSubmatch(line); match != nil {
+			text := strings.TrimSpace(match[1])
+			// Extract link text from [Title](url) or [Title](url) *Free*
+			linkMatch := regexp.MustCompile(`^\[([^\]]+)\][^\)]*\)`).FindStringSubmatch(text)
+			if linkMatch != nil {
+				text = linkMatch[1]
+			}
+			// Remove *Free* suffix
+			text = regexp.MustCompile(`\s*\*Free\*\s*$`).ReplaceAllString(text, "")
+			text = strings.TrimSpace(text)
+			anchor := toAnchor(text)
+			m[anchor] = true
+			// Add -free variant (TOC often uses this for free books even when header omits *Free*)
+			m[anchor+"-free"] = true
+		}
+	}
+	return m
+}
+
+func toAnchor(s string) string {
+	s = strings.ToLower(s)
+	s = regexp.MustCompile(`[^a-z0-9\s-]`).ReplaceAllString(s, "")
+	s = regexp.MustCompile(`\s+`).ReplaceAllString(s, "-")
+	return strings.Trim(s, "-")
+}
+
+func extractTOCLinks(lines []string) map[string]string {
+	m := make(map[string]string)
+	r := regexp.MustCompile(`^\s*-\s+\[([^\]]+)\]\(#([^\)]+)\)`)
+	for _, line := range lines {
+		if match := r.FindStringSubmatch(line); match != nil {
+			title := strings.TrimSpace(match[1])
+			anchor := strings.TrimSpace(match[2])
+			m[title] = anchor
+		}
+	}
+	return m
+}
+
+func extractBookBlocks(lines []string) map[string]string {
+	m := make(map[string]string)
+	bookR := regexp.MustCompile(`^###\s+\[([^\]]+)\].*$`)
+	var currentTitle string
+	var currentBlock strings.Builder
+
+	for _, line := range lines {
+		if match := bookR.FindStringSubmatch(line); match != nil {
+			if currentTitle != "" {
+				m[currentTitle] = currentBlock.String()
+			}
+			currentTitle = match[1]
+			currentBlock.Reset()
+			currentBlock.WriteString(line)
+			currentBlock.WriteString("\n")
+		} else if currentTitle != "" && (strings.HasPrefix(line, "###") || strings.HasPrefix(line, "##")) {
+			m[currentTitle] = currentBlock.String()
+			currentTitle = ""
+			currentBlock.Reset()
+		} else if currentTitle != "" && line != "-----" {
+			currentBlock.WriteString(line)
+			currentBlock.WriteString("\n")
+		}
+	}
+	if currentTitle != "" {
+		m[currentTitle] = currentBlock.String()
+	}
+	return m
+}
+
+func extractCoverRefs(lines []string) []string {
+	var refs []string
+	r := regexp.MustCompile(`src="(gobooks/covers/[^"]+)"`)
+	for _, line := range lines {
+		if match := r.FindStringSubmatch(line); match != nil {
+			refs = append(refs, match[1])
+		}
+	}
+	// Also check gobooks/cover/ path (typo)
+	r2 := regexp.MustCompile(`src="(gobooks/cover/[^"]+)"`)
+	for _, line := range lines {
+		if match := r2.FindStringSubmatch(line); match != nil {
+			refs = append(refs, match[1])
+		}
+	}
+	return refs
+}
+
+func findUnlinkedCovers(lines []string) []string {
+	var unlinked []string
+	r := regexp.MustCompile(`<img\s+src="(gobooks/covers/[^"]+)"`)
+	for _, line := range lines {
+		// Skip if img is inside <a href> or markdown link [<img...>](url)
+		if (strings.Contains(line, "<a href=") || strings.Contains(line, "](http")) && strings.Contains(line, "<img") {
+			continue
+		}
+		if match := r.FindStringSubmatch(line); match != nil {
+			unlinked = append(unlinked, match[1])
+		}
+	}
+	return unlinked
+}
+
+func truncate(s string, max int) string {
+	s = strings.Split(s, "(")[0]
+	s = strings.TrimSpace(s)
+	if len(s) > max {
+		return s[:max] + "..."
+	}
+	return s
+}
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}