Add print-ready PDF (#127)

.github/workflows/ci.yml

@@ -16,8 +16,10 @@ jobs:
         with:
           fetch-depth: 0
       - uses: actions-rust-lang/setup-rust-toolchain@v1
-      - name: Install plugin
+      - name: Install exercise plugin
         run: cargo install --path helpers/mdbook-exercise-linker
+      - name: Install link shortener plugin
+        run: cargo install --path helpers/mdbook-link-shortener
       - name: Install mdbook-pandoc and related dependencies
         run: |
           cargo install mdbook-pandoc --locked --version 0.7.1
@@ -63,6 +65,8 @@ jobs:
         with:
           tool: mdbook
       - name: Build book
+        env:
+          LINK_SHORTENER_VERIFY: "true"
         run: |
           cd book
           mdbook build
@@ -82,11 +86,25 @@ jobs:
           # When you support multiple formats, the output directory changes
           # to include the format in its path.
           path: book/book/html
-      # Upload the PDF book as an artifact
       - uses: actions/upload-artifact@v4
         with:
-          name: paperback
+          name: online-pdf
           path: book/book/pandoc/pdf/100-exercises-to-learn-rust.pdf
+      - uses: actions/upload-artifact@v4
+        with:
+          name: paperback
+          path: book/book/pandoc/paperback/100-exercises-to-learn-rust.pdf
+
+  is_fresh:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: sudo apt-get update && sudo apt-get install -y jq
+      - run: |
+          ./helpers/json2redirects.sh book/link2alias.json > site/redirects
+      # Verify nothing has changed, meaning that the redirect file is up-to-date
+      - run: |
+          git diff --exit-code site/redirects
 
   formatter:
     runs-on: ubuntu-latest

Cargo.toml

@@ -1,5 +1,11 @@
 [workspace]
-members = ["exercises/*/*", "helpers/common", "helpers/mdbook-exercise-linker", "helpers/ticket_fields"]
+members = [
+  "exercises/*/*",
+  "helpers/common",
+  "helpers/mdbook-exercise-linker",
+  "helpers/mdbook-link-shortener",
+  "helpers/ticket_fields",
+]
 resolver = "2"
 
 # This is needed to guarantee the expected behaviour on that specific exercise,

book/book.toml

@@ -39,8 +39,44 @@ header-includes = [
   "\\DefineVerbatimEnvironment{Highlighting}{Verbatim}{commandchars=\\\\\\{\\},fontsize=\\small}",
 ]
 
+[output.pandoc.profile.paperback]
+output-file = "100-exercises-to-learn-rust.pdf"
+to = "latex"
+highlight-style = "monochrome"
+# We use `lualatext` because, right now, it's the only engine
+# that supports fallback fonts, which we need for emojis.
+pdf-engine = "lualatex"
+
+[output.pandoc.profile.paperback.variables]
+subtitle = "A hands-on course by Mainmatter"
+# You can get these fonts here: https://fonts.google.com/selection?query=noto+color+
+mainfont = "Noto Serif"
+sansfont = "Noto Sans"
+monofont = "Noto Sans Mono"
+mainfontfallback = ["Noto Color Emoji:mode=harf"]
+sansfontfallback = ["Noto Color Emoji:mode=harf"]
+monofontfallback = [
+  "Noto Color Emoji:mode=harf",
+]
+urlstyle = "rm"
+documentclass = "book"
+fontsize = "11pt"
+geometry = "papersize={8in,10in},top=2cm,bottom=2cm,left=2.4cm,right=2.4cm"
+header-includes = [
+  # Reduce font size of code blocks
+  "\\DefineVerbatimEnvironment{Highlighting}{Verbatim}{commandchars=\\\\\\{\\},fontsize=\\small}",
+]
+links-as-notes = true
+
 [output.html]
 git-repository-url = "https://github.com/mainmatter/100-exercises-to-learn-rust"
 
 [preprocessor.exercise-linker]
 exercise_root_url = "https://github.com/mainmatter/100-exercises-to-learn-rust/tree/main/exercises"
+
+[preprocessor.link-shortener]
+base_url = "https://ruex.io"
+renderers = ["pandoc"]
+mapping = "link2alias.json"
+verify = false
+after = ["exercise-linker"]