├── .gitignore ├── theme ├── favicon.png ├── css │ ├── print.css │ ├── general.css │ ├── variables.css │ └── chrome.css ├── highlight.css ├── favicon.svg ├── index.hbs ├── book.js └── highlight.js ├── src ├── assets │ ├── logo.png │ └── vue-chart.png ├── SUMMARY.md ├── tasks │ ├── _index.md │ ├── infra.md │ ├── frontend.md │ ├── api.md │ ├── deploy.md │ ├── scraper.md │ └── db.md └── introduction.md ├── book.toml ├── .github └── workflows │ └── gh-pages.yml └── README.md /.gitignore: -------------------------------------------------------------------------------- 1 | book 2 | -------------------------------------------------------------------------------- /theme/favicon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/librescan-org/docs/HEAD/theme/favicon.png -------------------------------------------------------------------------------- /src/assets/logo.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/librescan-org/docs/HEAD/src/assets/logo.png -------------------------------------------------------------------------------- /src/assets/vue-chart.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/librescan-org/docs/HEAD/src/assets/vue-chart.png -------------------------------------------------------------------------------- /book.toml: -------------------------------------------------------------------------------- 1 | [book] 2 | authors = [] 3 | title = "LibreScan - documentation" 4 | language = "en" 5 | multilingual = false 6 | src = "src" 7 | 8 | [output.html] 9 | site-url = "/docs/" 10 | git-repository-url = "https://github.com/librescan-org/docs/tree/main/" 11 | edit-url-template = "https://github.com/librescan-org/docs/edit/main/{path}" 12 | -------------------------------------------------------------------------------- /src/SUMMARY.md: -------------------------------------------------------------------------------- 1 | # Summary 2 | 3 | - [Introduction](./introduction.md) 4 | - [LibreScan needs you!](./tasks/_index.md) 5 | - [VUEzards](./tasks/frontend.md) 6 | - [API scaffolders](./tasks/api.md) 7 | - [DB designers](./tasks/db.md) 8 | - [Scraper developers](./tasks/scraper.md) 9 | - [DevOps magicians](./tasks/deploy.md) 10 | - [Infra engineers](./tasks/infra.md) 11 | -------------------------------------------------------------------------------- /.github/workflows/gh-pages.yml: -------------------------------------------------------------------------------- 1 | name: github pages 2 | 3 | on: 4 | push: 5 | branches: 6 | - main 7 | pull_request: 8 | 9 | jobs: 10 | deploy: 11 | runs-on: ubuntu-20.04 12 | concurrency: 13 | group: ${{ github.workflow }}-${{ github.ref }} 14 | steps: 15 | - uses: actions/checkout@v2 16 | 17 | - name: Setup mdBook 18 | uses: peaceiris/actions-mdbook@v1 19 | with: 20 | mdbook-version: '0.4.14' 21 | 22 | - run: mdbook build 23 | 24 | - name: Deploy 25 | uses: peaceiris/actions-gh-pages@v3 26 | if: ${{ github.ref == 'refs/heads/main' }} 27 | with: 28 | github_token: ${{ secrets.GH_TOKEN }} 29 | publish_dir: ./book 30 | -------------------------------------------------------------------------------- /theme/css/print.css: -------------------------------------------------------------------------------- 1 | 2 | #sidebar, 3 | #menu-bar, 4 | .nav-chapters, 5 | .mobile-nav-chapters { 6 | display: none; 7 | } 8 | 9 | #page-wrapper.page-wrapper { 10 | transform: none; 11 | margin-left: 0px; 12 | overflow-y: initial; 13 | } 14 | 15 | #content { 16 | max-width: none; 17 | margin: 0; 18 | padding: 0; 19 | } 20 | 21 | .page { 22 | overflow-y: initial; 23 | } 24 | 25 | code { 26 | background-color: #666666; 27 | border-radius: 5px; 28 | 29 | /* Force background to be printed in Chrome */ 30 | -webkit-print-color-adjust: exact; 31 | } 32 | 33 | pre > .buttons { 34 | z-index: 2; 35 | } 36 | 37 | a, a:visited, a:active, a:hover { 38 | color: #4183c4; 39 | text-decoration: none; 40 | } 41 | 42 | h1, h2, h3, h4, h5, h6 { 43 | page-break-inside: avoid; 44 | page-break-after: avoid; 45 | } 46 | 47 | pre, code { 48 | page-break-inside: avoid; 49 | white-space: pre-wrap; 50 | } 51 | 52 | .fa { 53 | display: none !important; 54 | } 55 | -------------------------------------------------------------------------------- /src/tasks/_index.md: -------------------------------------------------------------------------------- 1 | # LibreScan needs you! 2 | 3 | LibreScan needs talented people from the wonderful crypto community to build a truly robust service the masses can use with confidence. 4 | 5 | We compiled some sample tasks to see what kind of roles need to be filled. 6 | 7 | ## Enroll 8 | 9 | If you see yourself fit for any of the roles do not hesitate to join the movement! 10 | 11 | [Click here](https://forms.gle/92JWCf18ejMaaFSF6) to enroll as a contributor. 12 | 13 | ## What needs to be done? 14 | 15 | The following sections will give a brief overview what kind of talent the project needs: 16 | 17 | - [VUEzards](./web.md) 18 | - [API scaffolders](./api.md) 19 | - [DB designers](./db.md) 20 | - [Scraper developers](./scraper.md) 21 | - [DevOps magicians](./devops.md) 22 | - [Infra engineers](./infra.md) 23 | 24 | Read up and see how you could fit! 25 | 26 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 27 | 28 | The detailed roadmap of LibreScan will be laid out in January 2022. 29 | It is highly important that the team has a ballpark overview how many contributors we can expect! 30 | 31 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 32 | -------------------------------------------------------------------------------- /theme/highlight.css: -------------------------------------------------------------------------------- 1 | /* 2 | * An increased contrast highlighting scheme loosely based on the 3 | * "Base16 Atelier Dune Light" theme by Bram de Haan 4 | * (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/dune) 5 | * Original Base16 color scheme by Chris Kempson 6 | * (https://github.com/chriskempson/base16) 7 | */ 8 | 9 | /* Comment */ 10 | .hljs-comment, 11 | .hljs-quote { 12 | color: #575757; 13 | } 14 | 15 | /* Red */ 16 | .hljs-variable, 17 | .hljs-template-variable, 18 | .hljs-attribute, 19 | .hljs-tag, 20 | .hljs-name, 21 | .hljs-regexp, 22 | .hljs-link, 23 | .hljs-name, 24 | .hljs-selector-id, 25 | .hljs-selector-class { 26 | color: #d70025; 27 | } 28 | 29 | /* Orange */ 30 | .hljs-number, 31 | .hljs-meta, 32 | .hljs-built_in, 33 | .hljs-builtin-name, 34 | .hljs-literal, 35 | .hljs-type, 36 | .hljs-params { 37 | color: #b21e00; 38 | } 39 | 40 | /* Green */ 41 | .hljs-string, 42 | .hljs-symbol, 43 | .hljs-bullet { 44 | color: #008200; 45 | } 46 | 47 | /* Blue */ 48 | .hljs-title, 49 | .hljs-section { 50 | color: #0030f2; 51 | } 52 | 53 | /* Purple */ 54 | .hljs-keyword, 55 | .hljs-selector-tag { 56 | color: #9d00ec; 57 | } 58 | 59 | .hljs { 60 | display: block; 61 | overflow-x: auto; 62 | background: #f6f7f6; 63 | color: #000; 64 | padding: 0.5em; 65 | } 66 | 67 | .hljs-emphasis { 68 | font-style: italic; 69 | } 70 | 71 | .hljs-strong { 72 | font-weight: bold; 73 | } 74 | 75 | .hljs-addition { 76 | color: #22863a; 77 | background-color: #f0fff4; 78 | } 79 | 80 | .hljs-deletion { 81 | color: #b31d28; 82 | background-color: #ffeef0; 83 | } 84 | -------------------------------------------------------------------------------- /src/tasks/infra.md: -------------------------------------------------------------------------------- 1 | # Infra engineers 2 | 3 | Managing underlying infrastructure without inflicting direct user pain is a hard task to tackle. 4 | For this very reason LibreScan makes this complication vanish as well by automating infrastructure creation by declarative means. 5 | 6 | ## Goal 7 | 8 | Support as many possible infrastructure providers as possible. 9 | Of course let's start with the most common ones like: 10 | 11 | - Amazon AWS 12 | - Google Cloud Platform 13 | - Microsoft Azure 14 | 15 | And also aim for the popular & trending choices like: 16 | 17 | - Linode 18 | - Hetzner 19 | - Scaleway 20 | 21 | ## See whether this is something for you 22 | 23 | If you can & enjoy building a Kubernetes cluster from scratch on bare metal using Terraform with a zero-config approach this is definitely your dream. 24 | 25 | [Poseidon Typhoon](https://github.com/poseidon/typhoon) is the amazing work of [Dalton Hubble](https://github.com/dghubble) which walks you through creating such a cluster powered by [Fedora CoreOS](https://typhoon.psdn.io/fedora-coreos/bare-metal/). See whether you can make it happen and whether you enjoy the process! 26 | 27 | --- 28 | 29 | ## Choice of tooling 30 | 31 | The choice here was straightforward, [Terraform](https://www.terraform.io) really shines in this field. 32 | It supports the vast majority of any possible deployment target as documented [here](https://registry.terraform.io/browse/providers). 33 | 34 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 35 | 36 | The detailed roadmap of LibreScan will be laid out in January 2022. 37 | It is highly important that the team has a ballpark overview how many contributors we can expect! 38 | 39 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 40 | -------------------------------------------------------------------------------- /theme/favicon.svg: -------------------------------------------------------------------------------- 1 | 2 | 7 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /src/tasks/frontend.md: -------------------------------------------------------------------------------- 1 | # VUEzards 2 | 3 | First off LibreScan needs a user-friendly, intuitive and familiar web based frontend. 4 | Lowering the entry barrier for blockchain & cryptocurrency users is a key mission of LibreScan, and doing that starts with a UI which is as easy as it gets. 5 | 6 | Rule of thumb is that anything that needs a user-manual to be read is not worth using for the consumer! 7 | 8 | --- 9 | 10 | ## Choice of framework 11 | 12 | The frontend framework of choice is [Vue3](https://v3.vuejs.org). 13 | 14 | There are various reasons why Vue3 ended up as the winner here as follows: 15 | 16 | ## Masses can read & understand it 17 | 18 | If you know HTML + JS + CSS chances are you will have no trouble understanding Vue code. 19 | React & Angular are way more intrusive and use much more exotic, custom structuring & syntax. 20 | 21 | As with everything related to Blockchain, transparency is key so the more people can comfortably read it, the better. 22 | 23 | ## Flatter learning curve 24 | 25 | Again, same rule applies. Vue has a much flatter learning curve compared to React & Angular. 26 | We want to allow as many people to contribute as possible, so one plus point for Vue here as well. 27 | 28 | ## Same philosophy 29 | 30 | Vue is a truly community driven framework, whereas React & Angular are backed by Facebook & Google respectively. 31 | Many developers appreciate tools that are not backed by tech giants, and this is definitely true for the crypto community. 32 | 33 | ## Popularity, market share 34 | 35 | Philosophy is nice but when building such an important piece of an ecosystem as LibreScan, one needs to watch out for real-world trends. 36 | We did, and Vue is definitely gaining traction: 37 | 38 | ![](../assets/vue-chart.png) 39 | 40 | Sure GitHub stars are not a de-facto measurement, but it clearly projects tendency. The community growth confirms this as well! 41 | 42 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 43 | 44 | The detailed roadmap of LibreScan will be laid out in January 2022. 45 | It is highly important that the team has a ballpark overview how many contributors we can expect! 46 | 47 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 48 | -------------------------------------------------------------------------------- /src/tasks/api.md: -------------------------------------------------------------------------------- 1 | # API scaffolders 2 | 3 | After inspecting data retrievable on the most popular block explorer's endpoints, a Mock API should be designed to return static data for frontend integration 4 | 5 | ## Endpoints to be inspected: 6 | 7 | - Listing entities 8 | - [List transactions](https://etherscan.io/txs) 9 | - [List blocks](https://etherscan.io/blocks) 10 | - [List all token transfers](https://etherscan.io/tokentxns) 11 | - [List specific token transfers](https://etherscan.io/token/0xaaa7a10a8ee237ea61e8ac46c50a8db8bcc1baaa) - **Note individual tabs: Transactions & Holders** 12 | 13 | - Inspecting a particular entity 14 | - [Inspect transaction](https://etherscan.io/tx/0xb90286759db02d31da762da627c6b38eb0f1e6259b7cb12c5bd8361d9e8b8fd9) 15 | - [Inspect block](https://etherscan.io/block/13608386) 16 | - [Inspect token transfer](https://etherscan.io/tx/0xe3a869af682a06a8546fa8385b28672706aeffe233dcb49325e54a0bded7c37a) 17 | - [Inspect EOA](https://etherscan.io/address/0x4dac65c769ce98d48795facbc871745ada9e49e3) - **Note individual tabs: Transactions & ERC-20 Token Txns** 18 | - [Inspect contract](https://etherscan.io/address/0xaaa7a10a8ee237ea61e8ac46c50a8db8bcc1baaa) - **Note individual tab: Contract** 19 | 20 | --- 21 | 22 | ## Choice of language 23 | 24 | LibreScan goes with JavaScript for its API component. 25 | The reasons are as follows: 26 | 27 | ### JavaScript is still the most popular language 28 | 29 | Since the API component reads from the Database and can restructure it in endless possible ways to be consumed by the frontend, it was crucial to pick a widely used language so we can have many contributors. 30 | 31 | ### Performance 32 | 33 | Python was another option considered here for above reasons, but it is still less popular and WAY less performant than NodeJS. 34 | If you want to see the actual numbers, check the popular [Benchmark game](https://benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/python.html) by Debian. 35 | 36 | While there are way more performant solutions than NodeJS (Go, Rust, C ...) they have way smaller communities (in descending order). 37 | 38 | Since the heavy lifting will be done by the scraper module anyway, NodeJS is a sane choice for the API component as it has to handle a very limited workflow. 39 | 40 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 41 | 42 | The detailed roadmap of LibreScan will be laid out in January 2022. 43 | It is highly important that the team has a ballpark overview how many contributors we can expect! 44 | 45 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 46 | -------------------------------------------------------------------------------- /src/tasks/deploy.md: -------------------------------------------------------------------------------- 1 | # DevOps magicians 2 | 3 | The core of efficiency and transparency lies in proper structuring of microservices orchestrated to provide the backbone of Librescan. 4 | 5 | The default setup looks like the following: 6 | 7 | ```yaml 8 | version: '3.7' 9 | 10 | services: 11 | 12 | # THE USER FACING WEBSITE 13 | web: 14 | image: librescan/web:v0.0.1 15 | networks: 16 | - frontend 17 | 18 | # SERVES INCOMING API REQUESTS FROM THE FRONTEND 19 | api: 20 | image: librescan/api:v0.0.1 21 | volumes: 22 | - config:/config # PERMANENT CONFIG M 23 | networks: 24 | - frontend # EXPOSE AT /api URL VIA INGRESS 25 | - backend # MUST ACCESS DB READ REPLICA 26 | 27 | # SERVES AS A READ-ONLY REPLICA FOR API REQUESTS 28 | db-read: 29 | image: librescan/db:v0.0.1 30 | command: read # INSTRUCTS CONTAINER TO LAUNCH IN READ-ONLY REPLICA MODE 31 | volumes: 32 | - db-read:/var/lib/pgsql/data # MOUNT READ-HEAVY VOLUME 33 | networks: 34 | - backend # MUST ACCESS WRITABLE DB TO REPLICATE FROM 35 | 36 | # RECEIVES STRUCTURED DATA FROM SCRAPER, OFFERS REPLICATION 37 | db-write: 38 | image: librescan/db:v0.0.1 39 | command: write # INSTRUCTS CONTAINER TO LAUNCH IN WRITABLE MODE 40 | volumes: 41 | - db-write:/var/lib/pgsql/data # MOUNT WRITE-HEAVY VOLUME 42 | networks: 43 | - backend # MUST BE ACCESSIBLE FOR SCRAPER 44 | 45 | # SCRAPES DATA OFF ETH RPC, STRUCTURES IT AND WRITES IT TO DB 46 | scraper: 47 | image: librescan/scraper:v0.0.1 48 | environment: 49 | RPC: https://example.com/rpc # ETH COMPATIBLE RPC ENDPOINT 50 | networks: 51 | - backend # MUST ACCESS WRITABLE DB TO WRITE TO 52 | 53 | networks: 54 | 55 | # THE FRONTEND NETWORK IS CONNECTED TO INGRESS CTL 56 | frontend: 57 | driver: bridge 58 | 59 | # BACKEND NETWORK IS FOR BACKEND SVC ONLY 60 | backend: 61 | driver: bridge 62 | 63 | volumes: 64 | 65 | config: # VOLUME FOR PERSISTENT CONFIGURATION 66 | db-read: # RESIDES ON SEPARATE READ-HEAVY TUNED DRIVE 67 | db-write: # RESIDES ON SEPARATE WRITE-HEAVY TUNED DRIVE 68 | ``` 69 | 70 | We are looking for DevOps wizards responsible for fine-tuning the microservice structure. 71 | 72 | The first requirement is to translate above docker-compose manifest file into various Kubernetes manifests (deployments, services, ingresses, PV & PVCs, etc.) 73 | 74 | --- 75 | 76 | ## Choice of orchestrator(s) 77 | 78 | We have to support everything here really. 79 | This is not a subjective question since this part of the application is vastly different from other components. 80 | The other modules can be chosen by us developers, but we surely must not force users to adopt to new container orchestration systems. 81 | 82 | ### Deployment targets to be supported 83 | 84 | - [Kubernetes](https://kubernetes.io) 85 | - [Docker Swarm](https://docs.docker.com/engine/swarm/) 86 | - [Docker Compose](https://docs.docker.com/compose/) 87 | 88 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 89 | 90 | The detailed roadmap of LibreScan will be laid out in January 2022. 91 | It is highly important that the team has a ballpark overview how many contributors we can expect! 92 | 93 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 94 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # LibreScan 2 | 3 | ## A truly FREE, decentralized blockchain explorer 4 | 5 | The LibreScan team is looking for developers contributing to developing of a novel, openly accessible and truly free blockchain explorer. 6 | 7 | ## Problem 8 | 9 | There is an eager need for a non-centralized, easily self-hostable & user friendly explorer, since while (most) blockchains are properly decentralized, 99% of users interact with them using completely centralized UIs. 10 | 11 | The most often used type of such an evil UI is the block explorer itself. 12 | 13 | Main issue is going 100% against blockchains' decentralization principles, as users are effectively associating all their valuable information (their wallet addresses, balances, owned token addresses etc.) with their IP addresses as soon as they make a lookup for them through such centralized explorers. 14 | 15 | Even worse is that if any organization would ever decide to censor / ban blockchains and cryptocurrencies, they could be very effective by cutting off access to these very services. 16 | Imagine a community highly reliant on these explorers waking up to a day where non of their points of trust is reachable. 17 | 18 | This brings the next problem, which is trust itself. Whatever data these centralized services display, the users believe. Another important philosophy cornerstone of blockchain is the "never trust, always verify". Well, the centralized explorers go against this principle 100% as well by giving users a false comfort of exposing blockchain data that is supposedly verified. They could easily showcase false data and 99% of the users would believe it, since they have no verification tooling! 19 | 20 | ## Solution 21 | 22 | All above issues can be solved by providing a truly free & open-source solution for this usecase. Companies have been profiteering way too long already of selling user data (blockchain data <-> personal metadata mappings) putting members of our community at risk! 23 | 24 | The goal is to give the blockchain community an easily self hostable solution making the UI part just as much decentralized as blockchains themselves are. 25 | 26 | As a result data meant to kept private stays private indeed. 27 | 28 | ## Quick overview of components 29 | 30 | | Module | Lang / Tech | Purpose | 31 | | --------------------------- | ----------- | --------------------------------------------------- | 32 | | [**frontend**](https://github.com/librescan-org/frontend) [[docs]](https://librescan-org.github.io/docs/tasks/frontend) | Vue3 | Responsible web frontend | 33 | | [**api**](https://github.com/librescan-org/api) [[docs]](https://librescan-org.github.io/docs/tasks/api) | NodeJS | Retrieves and serves chain data from DB to frontend | 34 | | [**db**](https://github.com/librescan-org/db) [[docs]](https://librescan-org.github.io/docs/tasks/db) | PostgreSQL | Stores restructured chain data from scraper | 35 | | [**scraper**](https://github.com/librescan-org/scraper) [[docs]](https://librescan-org.github.io/docs/tasks/scraper) | Go | Scrapes & structures blockchain data | 36 | | [**deploy**](https://github.com/librescan-org/deploy) [[docs]](https://librescan-org.github.io/docs/tasks/deploy) | Various | Orchestration platform manifests | 37 | | [**infra**](https://github.com/librescan-org/infra) [[docs]](https://librescan-org.github.io/docs/tasks/infra) | Terraform | Infrastructure as code for popular platforms | 38 | 39 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 40 | 41 | The detailed roadmap of LibreScan will be laid out in January 2022. 42 | It is highly important that the team has a ballpark overview how many contributors we can expect! 43 | 44 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 45 | -------------------------------------------------------------------------------- /src/introduction.md: -------------------------------------------------------------------------------- 1 | # Introduction 2 | 3 | The LibreScan team is looking for developers contributing to developing of a novel, openly accessible and truly free blockchain explorer. 4 | 5 | ## Problem 6 | 7 | There is an eager need for a non-centralized, easily self-hostable & user friendly explorer, since while (most) blockchains are properly decentralized, 99% of users interact with them using completely centralized UIs. 8 | 9 | The most often used type of such an evil UI is the block explorer itself. 10 | 11 | Main issue is going 100% against blockchains' decentralization principles, as users are effectively associating all their valuable information (their wallet addresses, balances, owned token addresses etc.) with their IP addresses as soon as they make a lookup for them through such centralized explorers. 12 | 13 | Even worse is that if any organization would ever decide to censor / ban blockchains and cryptocurrencies, they could be very effective by cutting off access to these very services. 14 | Imagine a community highly reliant on these explorers waking up to a day where non of their points of trust is reachable. 15 | 16 | This brings the next problem, which is trust itself. Whatever data these centralized services display, the users believe. Another important philosophy cornerstone of blockchain is the "never trust, always verify". Well, the centralized explorers go against this principle 100% as well by giving users a false comfort of exposing blockchain data that is supposedly verified. They could easily showcase false data and 99% of the users would believe it, since they have no verification tooling! 17 | 18 | ## Solution 19 | 20 | All above issues can be solved by providing a truly free & open-source solution for this usecase. Companies have been profiteering way too long already of selling user data (blockchain data <-> personal metadata mappings) putting members of our community at risk! 21 | 22 | The goal is to give the blockchain community an easily self hostable solution making the UI part just as much decentralized as blockchains themselves are. 23 | 24 | As a result data meant to kept private stays private indeed. 25 | 26 | ## Quick overview of components 27 | 28 | | Module | Lang / Tech | Purpose | 29 | | --------------------------- | ----------- | --------------------------------------------------- | 30 | | [**frontend**](https://librescan-org.github.io/docs/tasks/frontend) [[docs]](https://librescan-org.github.io/docs/tasks/frontend) | Vue3 | Responsible web frontend | 31 | | [**api**](https://librescan-org.github.io/docs/tasks/api) [[docs]](https://librescan-org.github.io/docs/tasks/api) | NodeJS | Retrieves and serves chain data from DB to frontend | 32 | | [**db**](https://librescan-org.github.io/docs/tasks/db) [[docs]](https://librescan-org.github.io/docs/tasks/db) | PostgreSQL | Stores restructured chain data from scraper | 33 | | [**scraper**](https://librescan-org.github.io/docs/tasks/scraper) [[docs]](https://librescan-org.github.io/docs/tasks/scraper) | Go | Scrapes & structures blockchain data | 34 | | [**deploy**](https://librescan-org.github.io/docs/tasks/deploy) [[docs]](https://librescan-org.github.io/docs/tasks/deploy) | Various | Orchestration platform manifests | 35 | | [**infra**](https://librescan-org.github.io/docs/tasks/infra) [[docs]](https://librescan-org.github.io/docs/tasks/infra) | Terraform | Infrastructure as code for popular platforms | 36 | 37 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 38 | 39 | The detailed roadmap of LibreScan will be laid out in January 2022. 40 | It is highly important that the team has a ballpark overview how many contributors we can expect! 41 | 42 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 43 | -------------------------------------------------------------------------------- /src/tasks/scraper.md: -------------------------------------------------------------------------------- 1 | # Scraper developers 2 | 3 | After the DB has been constructed and the API is ready to serve data from it to the frontend, we need to start filling the DB with real world data scraped off a real blockchain. 4 | 5 | The simple hierarchy is that each block contains N transactions. Transactions can be of various kinds, respectively: 6 | 7 | ## Regular ETH transaction 8 | 9 | This is the simplest form of a transaction, where the particular chain's native currency (ETH on Ethereum, BNB on Binance Smart Chain, etc.) gets transferred from address 0xA to address 0xB. 10 | 11 | They can be easily recognized by the scraper as all these transactions have an empty data field (0x). 12 | 13 | ## Contract deployment transaction 14 | 15 | Contract deployment transactions can be also detected without much effort, since these are the only transactions where there is no recipient defined. 16 | 17 | Any transaction where there is no recipient and the data field is not empty is definitely a contract deployment transaction. 18 | 19 | We need to further differentiate token contract and other custom contract deployments: 20 | 21 | - ERC20 Token contract 22 | 23 | Such a contract implements the [EIP-20 Token Standard Inferface](https://eips.ethereum.org/EIPS/eip-20) and has the specified method IDs present in the contract bytecode. 24 | 25 | - Other custom contract 26 | 27 | Anything which is not an ERC20 token contract falls into this category, meaning if at least ONE of the method signatures present in EIP20 is not defined in the contract then it falls into this category. 28 | 29 | ## Token transfer transaction 30 | 31 | These kind of transactions contain information about a token transaction in their either their data field or emit a Transfer(address, address, uint256) type of event during execution 32 | 33 | - Direct transfers 34 | 35 | These kinds of transfers are easily recognizable from the data field's first four bytes being ```0xa9059cbb``` indicating the transfer(address, uint256) function signature. 36 | 37 | Two 32byte parameters will follow, the first being trimmed to 20bytes which indicates the recipient of the transfer, and the other value meaning the amount of tokens transferred in a HEX encoded form. 38 | 39 | - Internal transfers 40 | 41 | When some other kind of transaction (e.g. DEX trade) moves tokens, they will event a single or multiple Transfer(address, address, uint256) signature events. These events should be parsed if they are emitted and inserted into the DB. 42 | 43 | --- 44 | 45 | ## Choice of language 46 | 47 | The scraper module of LibreScan is implemented in [Go](https://go.dev). 48 | 49 | ### Ecosystem 50 | 51 | Go is a quite popular programming language in the blockchain & crypto ecosystem, as major players build their official engines with it. 52 | Just to name a few: 53 | 54 | - [Ethereum](https://github.com/ethereum/go-ethereum) 55 | - [Binance](https://github.com/binance-chain/bsc) 56 | - [Coinbase](https://github.com/coinbase/kryptology) 57 | 58 | ### Language purpose 59 | 60 | While it is true that Rust is more performant than Go, but the Go language was especially designed for concurrent network based applications 61 | 62 | ### Learning curve 63 | 64 | Again, the learning curve (=entry barrier) was an important factor as well when making the decision. 65 | Rust has a way steeper learning curve and has unquestionably harder to understand sources. Same philosophy applies that the more people are able to read how stuff works, the better. 66 | 67 | ### Considering benefits & tradeoffs 68 | 69 | Comparing all the above benefits of Go with the performance tradeoff against Rust, the choice was a no-brainer. 70 | If you love Go & crypto you should really join the development to build something truly magnificent for this space! 71 | 72 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 73 | 74 | The detailed roadmap of LibreScan will be laid out in January 2022. 75 | It is highly important that the team has a ballpark overview how many contributors we can expect! 76 | 77 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 78 | -------------------------------------------------------------------------------- /src/tasks/db.md: -------------------------------------------------------------------------------- 1 | # DB designers 2 | 3 | Librescan stack will utilize a PostgreSQL database to store blockchain data in the most storage efficient way without compromising on lookup speeds. 4 | 5 | It must be able to perform well even on a Raspberry Pi 4 with two attached SSD drives. 6 | 7 | The goal is to turn the following YAML draft into PostgreSQL table creation statements: 8 | 9 | ```yaml 10 | ids: 11 | id: bigserial 12 | idx: bytea # 16 bytes, indexed, used for lookup 13 | remainder: bytea # remainder of binary data 14 | type: smallint # 0=eoa 1=contract 2=txhash 3=blockhash 15 | 16 | nicks: 17 | id: bigint # foreign key id@ids 18 | nick: string # nickname of the particular id 19 | type: smallint # indicates nickname type 20 | 21 | erc20tokens: 22 | id: bigint # foreign key id@ids 23 | name: string # token name 24 | symbol: string # token symbol 25 | decimals: smallint # how many decimals the token has 26 | supply: bigint # divided by decimals 27 | 28 | blocks: 29 | id: bigint # foreign key id@ids, the blockhash 30 | height: int # block height in the chain 31 | created_at: int # unix ts 32 | 33 | txs: 34 | txhash: bigint # foreign key id@ids, the txhash 35 | block: int # block height, foreign key height@blocks 36 | value: bigint # in gwei 37 | from_id: bigint # foreign key id@ids 38 | to_id: bigint # foreign key id@ids 39 | gas_limit: bigint 40 | gas_price: bigint 41 | method_id: int? # 4 bytes 42 | params: bytea? # not contract deployment, not erc20 tx 43 | 44 | ethtxs: # if data == 0x tx gets inserted 45 | txhash: bigint # foreign key id@ids 46 | from_id: bigint # foreign key id@ids 47 | to_id: bigint # foreign key id@ids 48 | value: bigint # in gwei 49 | 50 | erc20txs: # if first four bytes indicate transfer signature tx gets inserted 51 | txhash: bigint # foreign key id@ids 52 | token_id: bigint # foreign key id@ids 53 | from_id: bigint # foreign key id@ids 54 | to_id: bigint # foreign key id@ids 55 | value: bigint # divided by decimals 56 | 57 | contracts: 58 | txhash: bigint # foreign key id@ids 59 | address_id: bigint # contract address, foreign key id@ids 60 | deployer_id: bigint # deployer address, foreign key id@ids 61 | bytecode: bytea # contract bytecode 62 | 63 | stats: 64 | address_id: bigint # foreign key id@ids 65 | token_id: bigint # foreign key id@ids, or 0 for eth transfers 66 | balance: bigint # divided by decimals / gwei 67 | first_in: int # unix ts 68 | first_out: int # unix ts 69 | last_in: int # unix ts 70 | last_out: int # unix ts 71 | 72 | ``` 73 | 74 | Constructive comments to the structure are welcome as well. 75 | 76 | --- 77 | 78 | ## Choice of engine 79 | 80 | PostgreSQL was chosen for several reasons as follows: 81 | 82 | ### Performance & Scaling 83 | 84 | PostgreSQL is usually the choice for open-source projects of this magnitude. 85 | The community around it is also preferable in our humble opinion. 86 | 87 | > If you’re developing an application with a database back end, which of the two should you use? Consider PostgreSQL for any application that might grow to enterprise scope, with complex queries and frequent write operations. If you’re new to the world of databases and don’t expect your application to scale up, or you’re looking for a quick tool for prototyping, then consider MySQL. 88 | 89 | ### Philosopy 90 | 91 | Again, the Philisophy of the technologies used is another important factor as we've seen when we described the previous modules. Consider the following: 92 | 93 | > One of the original developers of Ingres returned to Berkeley in 1985 (after founding a company that commercialized Ingres) to develop a successor to Ingres that he named Postgres. The name was officially changed to PostgreSQL to take advantage of the reference to Structured Query Language, but the project uses both names. The first production release, PostgreSQL 6.0, came out in 1997. Now at version 14 (beta), Postgres is developed by an “unincorporated association of volunteers and companies who share code under the PostgreSQL Licence,” according to a project FAQ. 94 | 95 | > Unlike PostgreSQL, MySQL has always been under corporate control. Original developer MySQL AB was acquired by Sun Microsystems in 2008, shortly before Sun was itself acquired by Oracle in 2010. 96 | 97 | *Source from [fivetran.com](https://www.fivetran.com/blog/postgresql-vs-mysql)* 98 | 99 | # [> register <](https://forms.gle/92JWCf18ejMaaFSF6) as a contributor 100 | 101 | The detailed roadmap of LibreScan will be laid out in January 2022. 102 | It is highly important that the team has a ballpark overview how many contributors we can expect! 103 | 104 | If you share the same mindset and you are willing to add value to the crypto community sign up via [this link](https://forms.gle/92JWCf18ejMaaFSF6). 105 | -------------------------------------------------------------------------------- /theme/css/general.css: -------------------------------------------------------------------------------- 1 | /* Base styles and content styles */ 2 | 3 | @import 'variables.css'; 4 | 5 | :root { 6 | /* Browser default font-size is 16px, this way 1 rem = 10px */ 7 | font-size: 62.5%; 8 | } 9 | 10 | html { 11 | font-family: "Open Sans", sans-serif; 12 | color: var(--fg); 13 | background-color: var(--bg); 14 | text-size-adjust: none; 15 | } 16 | 17 | body { 18 | margin: 0; 19 | font-size: 1.6rem; 20 | overflow-x: hidden; 21 | } 22 | 23 | code { 24 | font-family: "Source Code Pro", Consolas, "Ubuntu Mono", Menlo, "DejaVu Sans Mono", monospace, monospace !important; 25 | font-size: 0.875em; /* please adjust the ace font size accordingly in editor.js */ 26 | } 27 | 28 | /* Don't change font size in headers. */ 29 | h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { 30 | font-size: unset; 31 | } 32 | 33 | .left { float: left; } 34 | .right { float: right; } 35 | .boring { opacity: 0.6; } 36 | .hide-boring .boring { display: none; } 37 | .hidden { display: none !important; } 38 | 39 | h2, h3 { margin-top: 2.5em; } 40 | h4, h5 { margin-top: 2em; } 41 | 42 | .header + .header h3, 43 | .header + .header h4, 44 | .header + .header h5 { 45 | margin-top: 1em; 46 | } 47 | 48 | h1:target::before, 49 | h2:target::before, 50 | h3:target::before, 51 | h4:target::before, 52 | h5:target::before, 53 | h6:target::before { 54 | display: inline-block; 55 | content: "»"; 56 | margin-left: -30px; 57 | width: 30px; 58 | } 59 | 60 | /* This is broken on Safari as of version 14, but is fixed 61 | in Safari Technology Preview 117 which I think will be Safari 14.2. 62 | https://bugs.webkit.org/show_bug.cgi?id=218076 63 | */ 64 | :target { 65 | scroll-margin-top: calc(var(--menu-bar-height) + 0.5em); 66 | } 67 | 68 | .page { 69 | outline: 0; 70 | padding: 0 var(--page-padding); 71 | margin-top: calc(0px - var(--menu-bar-height)); /* Compensate for the #menu-bar-hover-placeholder */ 72 | } 73 | .page-wrapper { 74 | box-sizing: border-box; 75 | } 76 | .js:not(.sidebar-resizing) .page-wrapper { 77 | transition: margin-left 0.3s ease, transform 0.3s ease; /* Animation: slide away */ 78 | } 79 | 80 | .content { 81 | overflow-y: auto; 82 | padding: 0 15px; 83 | padding-bottom: 50px; 84 | } 85 | .content main { 86 | margin-left: auto; 87 | margin-right: auto; 88 | max-width: var(--content-max-width); 89 | } 90 | .content p { line-height: 1.45em; } 91 | .content ol { line-height: 1.45em; } 92 | .content ul { line-height: 1.45em; } 93 | .content a { text-decoration: none; } 94 | .content a:hover { text-decoration: underline; } 95 | .content img, .content video { max-width: 100%; } 96 | .content .header:link, 97 | .content .header:visited { 98 | color: var(--fg); 99 | } 100 | .content .header:link, 101 | .content .header:visited:hover { 102 | text-decoration: none; 103 | } 104 | 105 | table { 106 | margin: 0 auto; 107 | border-collapse: collapse; 108 | } 109 | table td { 110 | padding: 3px 20px; 111 | border: 1px var(--table-border-color) solid; 112 | } 113 | table thead { 114 | background: var(--table-header-bg); 115 | } 116 | table thead td { 117 | font-weight: 700; 118 | border: none; 119 | } 120 | table thead th { 121 | padding: 3px 20px; 122 | } 123 | table thead tr { 124 | border: 1px var(--table-header-bg) solid; 125 | } 126 | /* Alternate background colors for rows */ 127 | table tbody tr:nth-child(2n) { 128 | background: var(--table-alternate-bg); 129 | } 130 | 131 | 132 | blockquote { 133 | margin: 20px 0; 134 | padding: 0 20px; 135 | color: var(--fg); 136 | background-color: var(--quote-bg); 137 | border-top: .1em solid var(--quote-border); 138 | border-bottom: .1em solid var(--quote-border); 139 | } 140 | 141 | 142 | :not(.footnote-definition) + .footnote-definition, 143 | .footnote-definition + :not(.footnote-definition) { 144 | margin-top: 2em; 145 | } 146 | .footnote-definition { 147 | font-size: 0.9em; 148 | margin: 0.5em 0; 149 | } 150 | .footnote-definition p { 151 | display: inline; 152 | } 153 | 154 | .tooltiptext { 155 | position: absolute; 156 | visibility: hidden; 157 | color: #fff; 158 | background-color: #333; 159 | transform: translateX(-50%); /* Center by moving tooltip 50% of its width left */ 160 | left: -8px; /* Half of the width of the icon */ 161 | top: -35px; 162 | font-size: 0.8em; 163 | text-align: center; 164 | border-radius: 6px; 165 | padding: 5px 8px; 166 | margin: 5px; 167 | z-index: 1000; 168 | } 169 | .tooltipped .tooltiptext { 170 | visibility: visible; 171 | } 172 | 173 | .chapter li.part-title { 174 | color: var(--sidebar-fg); 175 | margin: 5px 0px; 176 | font-weight: bold; 177 | } 178 | 179 | .result-no-output { 180 | font-style: italic; 181 | } 182 | -------------------------------------------------------------------------------- /theme/css/variables.css: -------------------------------------------------------------------------------- 1 | 2 | /* Globals */ 3 | 4 | :root { 5 | --sidebar-width: 300px; 6 | --page-padding: 15px; 7 | --content-max-width: 750px; 8 | --menu-bar-height: 50px; 9 | } 10 | 11 | /* Themes */ 12 | 13 | .ayu { 14 | --bg: hsl(210, 25%, 8%); 15 | --fg: #c5c5c5; 16 | 17 | --sidebar-bg: #14191f; 18 | --sidebar-fg: #c8c9db; 19 | --sidebar-non-existant: #5c6773; 20 | --sidebar-active: #ffb454; 21 | --sidebar-spacer: #2d334f; 22 | 23 | --scrollbar: var(--sidebar-fg); 24 | 25 | --icons: #737480; 26 | --icons-hover: #b7b9cc; 27 | 28 | --links: #0096cf; 29 | 30 | --inline-code-color: #ffb454; 31 | 32 | --theme-popup-bg: #14191f; 33 | --theme-popup-border: #5c6773; 34 | --theme-hover: #191f26; 35 | 36 | --quote-bg: hsl(226, 15%, 17%); 37 | --quote-border: hsl(226, 15%, 22%); 38 | 39 | --table-border-color: hsl(210, 25%, 13%); 40 | --table-header-bg: hsl(210, 25%, 28%); 41 | --table-alternate-bg: hsl(210, 25%, 11%); 42 | 43 | --searchbar-border-color: #848484; 44 | --searchbar-bg: #424242; 45 | --searchbar-fg: #fff; 46 | --searchbar-shadow-color: #d4c89f; 47 | --searchresults-header-fg: #666; 48 | --searchresults-border-color: #888; 49 | --searchresults-li-bg: #252932; 50 | --search-mark-bg: #e3b171; 51 | } 52 | 53 | .coal { 54 | --bg: hsl(200, 7%, 8%); 55 | --fg: #98a3ad; 56 | 57 | --sidebar-bg: #292c2f; 58 | --sidebar-fg: #a1adb8; 59 | --sidebar-non-existant: #505254; 60 | --sidebar-active: #3473ad; 61 | --sidebar-spacer: #393939; 62 | 63 | --scrollbar: var(--sidebar-fg); 64 | 65 | --icons: #43484d; 66 | --icons-hover: #b3c0cc; 67 | 68 | --links: #2b79a2; 69 | 70 | --inline-code-color: #c5c8c6; 71 | 72 | --theme-popup-bg: #141617; 73 | --theme-popup-border: #43484d; 74 | --theme-hover: #1f2124; 75 | 76 | --quote-bg: hsl(234, 21%, 18%); 77 | --quote-border: hsl(234, 21%, 23%); 78 | 79 | --table-border-color: hsl(200, 7%, 13%); 80 | --table-header-bg: hsl(200, 7%, 28%); 81 | --table-alternate-bg: hsl(200, 7%, 11%); 82 | 83 | --searchbar-border-color: #aaa; 84 | --searchbar-bg: #b7b7b7; 85 | --searchbar-fg: #000; 86 | --searchbar-shadow-color: #aaa; 87 | --searchresults-header-fg: #666; 88 | --searchresults-border-color: #98a3ad; 89 | --searchresults-li-bg: #2b2b2f; 90 | --search-mark-bg: #355c7d; 91 | } 92 | 93 | .light { 94 | --bg: hsl(0, 0%, 100%); 95 | --fg: hsl(0, 0%, 0%); 96 | 97 | --sidebar-bg: #fafafa; 98 | --sidebar-fg: hsl(0, 0%, 0%); 99 | --sidebar-non-existant: #aaaaaa; 100 | --sidebar-active: #1f1fff; 101 | --sidebar-spacer: #f4f4f4; 102 | 103 | --scrollbar: #8F8F8F; 104 | 105 | --icons: #747474; 106 | --icons-hover: #000000; 107 | 108 | --links: #20609f; 109 | 110 | --inline-code-color: #301900; 111 | 112 | --theme-popup-bg: #fafafa; 113 | --theme-popup-border: #cccccc; 114 | --theme-hover: #e6e6e6; 115 | 116 | --quote-bg: hsl(197, 37%, 96%); 117 | --quote-border: hsl(197, 37%, 91%); 118 | 119 | --table-border-color: hsl(0, 0%, 95%); 120 | --table-header-bg: hsl(0, 0%, 80%); 121 | --table-alternate-bg: hsl(0, 0%, 97%); 122 | 123 | --searchbar-border-color: #aaa; 124 | --searchbar-bg: #fafafa; 125 | --searchbar-fg: #000; 126 | --searchbar-shadow-color: #aaa; 127 | --searchresults-header-fg: #666; 128 | --searchresults-border-color: #888; 129 | --searchresults-li-bg: #e4f2fe; 130 | --search-mark-bg: #a2cff5; 131 | } 132 | 133 | .navy { 134 | --bg: hsl(226, 23%, 11%); 135 | --fg: #bcbdd0; 136 | 137 | --sidebar-bg: #282d3f; 138 | --sidebar-fg: #c8c9db; 139 | --sidebar-non-existant: #505274; 140 | --sidebar-active: #2b79a2; 141 | --sidebar-spacer: #2d334f; 142 | 143 | --scrollbar: var(--sidebar-fg); 144 | 145 | --icons: #737480; 146 | --icons-hover: #b7b9cc; 147 | 148 | --links: #2b79a2; 149 | 150 | --inline-code-color: #c5c8c6; 151 | 152 | --theme-popup-bg: #161923; 153 | --theme-popup-border: #737480; 154 | --theme-hover: #282e40; 155 | 156 | --quote-bg: hsl(226, 15%, 17%); 157 | --quote-border: hsl(226, 15%, 22%); 158 | 159 | --table-border-color: hsl(226, 23%, 16%); 160 | --table-header-bg: hsl(226, 23%, 31%); 161 | --table-alternate-bg: hsl(226, 23%, 14%); 162 | 163 | --searchbar-border-color: #aaa; 164 | --searchbar-bg: #aeaec6; 165 | --searchbar-fg: #000; 166 | --searchbar-shadow-color: #aaa; 167 | --searchresults-header-fg: #5f5f71; 168 | --searchresults-border-color: #5c5c68; 169 | --searchresults-li-bg: #242430; 170 | --search-mark-bg: #a2cff5; 171 | } 172 | 173 | .rust { 174 | --bg: hsl(60, 9%, 87%); 175 | --fg: #262625; 176 | 177 | --sidebar-bg: #3b2e2a; 178 | --sidebar-fg: #c8c9db; 179 | --sidebar-non-existant: #505254; 180 | --sidebar-active: #e69f67; 181 | --sidebar-spacer: #45373a; 182 | 183 | --scrollbar: var(--sidebar-fg); 184 | 185 | --icons: #737480; 186 | --icons-hover: #262625; 187 | 188 | --links: #2b79a2; 189 | 190 | --inline-code-color: #6e6b5e; 191 | 192 | --theme-popup-bg: #e1e1db; 193 | --theme-popup-border: #b38f6b; 194 | --theme-hover: #99908a; 195 | 196 | --quote-bg: hsl(60, 5%, 75%); 197 | --quote-border: hsl(60, 5%, 70%); 198 | 199 | --table-border-color: hsl(60, 9%, 82%); 200 | --table-header-bg: #b3a497; 201 | --table-alternate-bg: hsl(60, 9%, 84%); 202 | 203 | --searchbar-border-color: #aaa; 204 | --searchbar-bg: #fafafa; 205 | --searchbar-fg: #000; 206 | --searchbar-shadow-color: #aaa; 207 | --searchresults-header-fg: #666; 208 | --searchresults-border-color: #888; 209 | --searchresults-li-bg: #dec2a2; 210 | --search-mark-bg: #e69f67; 211 | } 212 | 213 | @media (prefers-color-scheme: dark) { 214 | .light.no-js { 215 | --bg: hsl(200, 7%, 8%); 216 | --fg: #98a3ad; 217 | 218 | --sidebar-bg: #292c2f; 219 | --sidebar-fg: #a1adb8; 220 | --sidebar-non-existant: #505254; 221 | --sidebar-active: #3473ad; 222 | --sidebar-spacer: #393939; 223 | 224 | --scrollbar: var(--sidebar-fg); 225 | 226 | --icons: #43484d; 227 | --icons-hover: #b3c0cc; 228 | 229 | --links: #2b79a2; 230 | 231 | --inline-code-color: #c5c8c6; 232 | 233 | --theme-popup-bg: #141617; 234 | --theme-popup-border: #43484d; 235 | --theme-hover: #1f2124; 236 | 237 | --quote-bg: hsl(234, 21%, 18%); 238 | --quote-border: hsl(234, 21%, 23%); 239 | 240 | --table-border-color: hsl(200, 7%, 13%); 241 | --table-header-bg: hsl(200, 7%, 28%); 242 | --table-alternate-bg: hsl(200, 7%, 11%); 243 | 244 | --searchbar-border-color: #aaa; 245 | --searchbar-bg: #b7b7b7; 246 | --searchbar-fg: #000; 247 | --searchbar-shadow-color: #aaa; 248 | --searchresults-header-fg: #666; 249 | --searchresults-border-color: #98a3ad; 250 | --searchresults-li-bg: #2b2b2f; 251 | --search-mark-bg: #355c7d; 252 | } 253 | } 254 | -------------------------------------------------------------------------------- /theme/css/chrome.css: -------------------------------------------------------------------------------- 1 | /* CSS for UI elements (a.k.a. chrome) */ 2 | 3 | @import 'variables.css'; 4 | 5 | ::-webkit-scrollbar { 6 | background: var(--bg); 7 | } 8 | ::-webkit-scrollbar-thumb { 9 | background: var(--scrollbar); 10 | } 11 | html { 12 | scrollbar-color: var(--scrollbar) var(--bg); 13 | } 14 | #searchresults a, 15 | .content a:link, 16 | a:visited, 17 | a > .hljs { 18 | color: var(--links); 19 | } 20 | 21 | /* Menu Bar */ 22 | 23 | #menu-bar, 24 | #menu-bar-hover-placeholder { 25 | z-index: 101; 26 | margin: auto calc(0px - var(--page-padding)); 27 | } 28 | #menu-bar { 29 | position: relative; 30 | display: flex; 31 | flex-wrap: wrap; 32 | background-color: var(--bg); 33 | border-bottom-color: var(--bg); 34 | border-bottom-width: 1px; 35 | border-bottom-style: solid; 36 | } 37 | #menu-bar.sticky, 38 | .js #menu-bar-hover-placeholder:hover + #menu-bar, 39 | .js #menu-bar:hover, 40 | .js.sidebar-visible #menu-bar { 41 | position: -webkit-sticky; 42 | position: sticky; 43 | top: 0 !important; 44 | } 45 | #menu-bar-hover-placeholder { 46 | position: sticky; 47 | position: -webkit-sticky; 48 | top: 0; 49 | height: var(--menu-bar-height); 50 | } 51 | #menu-bar.bordered { 52 | border-bottom-color: var(--table-border-color); 53 | } 54 | #menu-bar i, #menu-bar .icon-button { 55 | position: relative; 56 | padding: 0 8px; 57 | z-index: 10; 58 | line-height: var(--menu-bar-height); 59 | cursor: pointer; 60 | transition: color 0.5s; 61 | } 62 | @media only screen and (max-width: 420px) { 63 | #menu-bar i, #menu-bar .icon-button { 64 | padding: 0 5px; 65 | } 66 | } 67 | 68 | .icon-button { 69 | border: none; 70 | background: none; 71 | padding: 0; 72 | color: inherit; 73 | } 74 | .icon-button i { 75 | margin: 0; 76 | } 77 | 78 | .right-buttons { 79 | margin: 0 15px; 80 | } 81 | .right-buttons a { 82 | text-decoration: none; 83 | } 84 | 85 | .left-buttons { 86 | display: flex; 87 | margin: 0 5px; 88 | } 89 | .no-js .left-buttons { 90 | display: none; 91 | } 92 | 93 | .menu-title { 94 | display: inline-block; 95 | font-weight: 200; 96 | font-size: 2.4rem; 97 | line-height: var(--menu-bar-height); 98 | text-align: center; 99 | margin: 0; 100 | flex: 1; 101 | white-space: nowrap; 102 | overflow: hidden; 103 | text-overflow: ellipsis; 104 | } 105 | .js .menu-title { 106 | cursor: pointer; 107 | } 108 | 109 | .menu-bar, 110 | .menu-bar:visited, 111 | .nav-chapters, 112 | .nav-chapters:visited, 113 | .mobile-nav-chapters, 114 | .mobile-nav-chapters:visited, 115 | .menu-bar .icon-button, 116 | .menu-bar a i { 117 | color: var(--icons); 118 | } 119 | 120 | .menu-bar i:hover, 121 | .menu-bar .icon-button:hover, 122 | .nav-chapters:hover, 123 | .mobile-nav-chapters i:hover { 124 | color: var(--icons-hover); 125 | } 126 | 127 | /* Nav Icons */ 128 | 129 | .nav-chapters { 130 | font-size: 2.5em; 131 | text-align: center; 132 | text-decoration: none; 133 | 134 | position: fixed; 135 | top: 0; 136 | bottom: 0; 137 | margin: 0; 138 | max-width: 150px; 139 | min-width: 90px; 140 | 141 | display: flex; 142 | justify-content: center; 143 | align-content: center; 144 | flex-direction: column; 145 | 146 | transition: color 0.5s, background-color 0.5s; 147 | } 148 | 149 | .nav-chapters:hover { 150 | text-decoration: none; 151 | background-color: var(--theme-hover); 152 | transition: background-color 0.15s, color 0.15s; 153 | } 154 | 155 | .nav-wrapper { 156 | margin-top: 50px; 157 | display: none; 158 | } 159 | 160 | .mobile-nav-chapters { 161 | font-size: 2.5em; 162 | text-align: center; 163 | text-decoration: none; 164 | width: 90px; 165 | border-radius: 5px; 166 | background-color: var(--sidebar-bg); 167 | } 168 | 169 | .previous { 170 | float: left; 171 | } 172 | 173 | .next { 174 | float: right; 175 | right: var(--page-padding); 176 | } 177 | 178 | @media only screen and (max-width: 1080px) { 179 | .nav-wide-wrapper { display: none; } 180 | .nav-wrapper { display: block; } 181 | } 182 | 183 | @media only screen and (max-width: 1380px) { 184 | .sidebar-visible .nav-wide-wrapper { display: none; } 185 | .sidebar-visible .nav-wrapper { display: block; } 186 | } 187 | 188 | /* Inline code */ 189 | 190 | :not(pre) > .hljs { 191 | display: inline; 192 | padding: 0.1em 0.3em; 193 | border-radius: 3px; 194 | } 195 | 196 | :not(pre):not(a) > .hljs { 197 | color: var(--inline-code-color); 198 | overflow-x: initial; 199 | } 200 | 201 | a:hover > .hljs { 202 | text-decoration: underline; 203 | } 204 | 205 | pre { 206 | position: relative; 207 | } 208 | pre > .buttons { 209 | position: absolute; 210 | z-index: 100; 211 | right: 5px; 212 | top: 5px; 213 | 214 | color: var(--sidebar-fg); 215 | cursor: pointer; 216 | } 217 | pre > .buttons :hover { 218 | color: var(--sidebar-active); 219 | } 220 | pre > .buttons i { 221 | margin-left: 8px; 222 | } 223 | pre > .buttons button { 224 | color: inherit; 225 | background: transparent; 226 | border: none; 227 | cursor: inherit; 228 | } 229 | pre > .result { 230 | margin-top: 10px; 231 | } 232 | 233 | /* Search */ 234 | 235 | #searchresults a { 236 | text-decoration: none; 237 | } 238 | 239 | mark { 240 | border-radius: 2px; 241 | padding: 0 3px 1px 3px; 242 | margin: 0 -3px -1px -3px; 243 | background-color: var(--search-mark-bg); 244 | transition: background-color 300ms linear; 245 | cursor: pointer; 246 | } 247 | 248 | mark.fade-out { 249 | background-color: rgba(0,0,0,0) !important; 250 | cursor: auto; 251 | } 252 | 253 | .searchbar-outer { 254 | margin-left: auto; 255 | margin-right: auto; 256 | max-width: var(--content-max-width); 257 | } 258 | 259 | #searchbar { 260 | width: 100%; 261 | margin: 5px auto 0px auto; 262 | padding: 10px 16px; 263 | transition: box-shadow 300ms ease-in-out; 264 | border: 1px solid var(--searchbar-border-color); 265 | border-radius: 3px; 266 | background-color: var(--searchbar-bg); 267 | color: var(--searchbar-fg); 268 | } 269 | #searchbar:focus, 270 | #searchbar.active { 271 | box-shadow: 0 0 3px var(--searchbar-shadow-color); 272 | } 273 | 274 | .searchresults-header { 275 | font-weight: bold; 276 | font-size: 1em; 277 | padding: 18px 0 0 5px; 278 | color: var(--searchresults-header-fg); 279 | } 280 | 281 | .searchresults-outer { 282 | margin-left: auto; 283 | margin-right: auto; 284 | max-width: var(--content-max-width); 285 | border-bottom: 1px dashed var(--searchresults-border-color); 286 | } 287 | 288 | ul#searchresults { 289 | list-style: none; 290 | padding-left: 20px; 291 | } 292 | ul#searchresults li { 293 | margin: 10px 0px; 294 | padding: 2px; 295 | border-radius: 2px; 296 | } 297 | ul#searchresults li.focus { 298 | background-color: var(--searchresults-li-bg); 299 | } 300 | ul#searchresults span.teaser { 301 | display: block; 302 | clear: both; 303 | margin: 5px 0 0 20px; 304 | font-size: 0.8em; 305 | } 306 | ul#searchresults span.teaser em { 307 | font-weight: bold; 308 | font-style: normal; 309 | } 310 | 311 | /* Sidebar */ 312 | 313 | .sidebar { 314 | position: fixed; 315 | left: 0; 316 | top: 0; 317 | bottom: 0; 318 | width: var(--sidebar-width); 319 | font-size: 0.875em; 320 | box-sizing: border-box; 321 | -webkit-overflow-scrolling: touch; 322 | overscroll-behavior-y: contain; 323 | background-color: var(--sidebar-bg); 324 | color: var(--sidebar-fg); 325 | } 326 | .sidebar-resizing { 327 | -moz-user-select: none; 328 | -webkit-user-select: none; 329 | -ms-user-select: none; 330 | user-select: none; 331 | } 332 | .js:not(.sidebar-resizing) .sidebar { 333 | transition: transform 0.3s; /* Animation: slide away */ 334 | } 335 | .sidebar code { 336 | line-height: 2em; 337 | } 338 | .sidebar .sidebar-scrollbox { 339 | overflow-y: auto; 340 | position: absolute; 341 | top: 0; 342 | bottom: 0; 343 | left: 0; 344 | right: 0; 345 | padding: 10px 10px; 346 | } 347 | .sidebar .sidebar-resize-handle { 348 | position: absolute; 349 | cursor: col-resize; 350 | width: 0; 351 | right: 0; 352 | top: 0; 353 | bottom: 0; 354 | } 355 | .js .sidebar .sidebar-resize-handle { 356 | cursor: col-resize; 357 | width: 5px; 358 | } 359 | .sidebar-hidden .sidebar { 360 | transform: translateX(calc(0px - var(--sidebar-width))); 361 | } 362 | .sidebar::-webkit-scrollbar { 363 | background: var(--sidebar-bg); 364 | } 365 | .sidebar::-webkit-scrollbar-thumb { 366 | background: var(--scrollbar); 367 | } 368 | 369 | .sidebar-visible .page-wrapper { 370 | transform: translateX(var(--sidebar-width)); 371 | } 372 | @media only screen and (min-width: 620px) { 373 | .sidebar-visible .page-wrapper { 374 | transform: none; 375 | margin-left: var(--sidebar-width); 376 | } 377 | } 378 | 379 | .chapter { 380 | list-style: none outside none; 381 | padding-left: 0; 382 | line-height: 2.2em; 383 | } 384 | 385 | .chapter ol { 386 | width: 100%; 387 | } 388 | 389 | .chapter li { 390 | display: flex; 391 | color: var(--sidebar-non-existant); 392 | } 393 | .chapter li a { 394 | display: block; 395 | padding: 0; 396 | text-decoration: none; 397 | color: var(--sidebar-fg); 398 | } 399 | 400 | .chapter li a:hover { 401 | color: var(--sidebar-active); 402 | } 403 | 404 | .chapter li a.active { 405 | color: var(--sidebar-active); 406 | } 407 | 408 | .chapter li > a.toggle { 409 | cursor: pointer; 410 | display: block; 411 | margin-left: auto; 412 | padding: 0 10px; 413 | user-select: none; 414 | opacity: 0.68; 415 | } 416 | 417 | .chapter li > a.toggle div { 418 | transition: transform 0.5s; 419 | } 420 | 421 | /* collapse the section */ 422 | .chapter li:not(.expanded) + li > ol { 423 | display: none; 424 | } 425 | 426 | .chapter li.chapter-item { 427 | line-height: 1.5em; 428 | margin-top: 0.6em; 429 | } 430 | 431 | .chapter li.expanded > a.toggle div { 432 | transform: rotate(90deg); 433 | } 434 | 435 | .spacer { 436 | width: 100%; 437 | height: 3px; 438 | margin: 5px 0px; 439 | } 440 | .chapter .spacer { 441 | background-color: var(--sidebar-spacer); 442 | } 443 | 444 | @media (-moz-touch-enabled: 1), (pointer: coarse) { 445 | .chapter li a { padding: 5px 0; } 446 | .spacer { margin: 10px 0; } 447 | } 448 | 449 | .section { 450 | list-style: none outside none; 451 | padding-left: 20px; 452 | line-height: 1.9em; 453 | } 454 | 455 | /* Theme Menu Popup */ 456 | 457 | .theme-popup { 458 | position: absolute; 459 | left: 10px; 460 | top: var(--menu-bar-height); 461 | z-index: 1000; 462 | border-radius: 4px; 463 | font-size: 0.7em; 464 | color: var(--fg); 465 | background: var(--theme-popup-bg); 466 | border: 1px solid var(--theme-popup-border); 467 | margin: 0; 468 | padding: 0; 469 | list-style: none; 470 | display: none; 471 | } 472 | .theme-popup .default { 473 | color: var(--icons); 474 | } 475 | .theme-popup .theme { 476 | width: 100%; 477 | border: 0; 478 | margin: 0; 479 | padding: 2px 10px; 480 | line-height: 25px; 481 | white-space: nowrap; 482 | text-align: left; 483 | cursor: pointer; 484 | color: inherit; 485 | background: inherit; 486 | font-size: inherit; 487 | } 488 | .theme-popup .theme:hover { 489 | background-color: var(--theme-hover); 490 | } 491 | .theme-popup .theme:hover:first-child, 492 | .theme-popup .theme:hover:last-child { 493 | border-top-left-radius: inherit; 494 | border-top-right-radius: inherit; 495 | } 496 | -------------------------------------------------------------------------------- /theme/index.hbs: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | {{ title }} 7 | {{#if is_print }} 8 | 9 | {{/if}} 10 | {{#if base_url}} 11 | 12 | {{/if}} 13 | 14 | 15 | 16 | {{> head}} 17 | 18 | 19 | 20 | 21 | 22 | 23 | {{#if favicon_svg}} 24 | 25 | {{/if}} 26 | {{#if favicon_png}} 27 | 28 | {{/if}} 29 | 30 | 31 | 32 | {{#if print_enable}} 33 | 34 | {{/if}} 35 | 36 | 37 | 38 | {{#if copy_fonts}} 39 | 40 | {{/if}} 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | {{#each additional_css}} 49 | 50 | {{/each}} 51 | 52 | {{#if mathjax_support}} 53 | 54 | 55 | {{/if}} 56 | 57 | 58 | 59 | 63 | 64 | 65 | 79 | 80 | 81 | 91 | 92 | 93 | 103 | 104 | 112 | 113 |
114 | 115 |
116 | {{> header}} 117 | 118 | 161 | 162 | {{#if search_enabled}} 163 | 173 | {{/if}} 174 | 175 | 176 | 183 | 184 |
185 |
186 | {{{ content }}} 187 |
188 | 189 | 205 |
206 |
207 | 208 | 221 | 222 |
223 | 224 | {{#if livereload}} 225 | 226 | 239 | {{/if}} 240 | 241 | {{#if google_analytics}} 242 | 243 | 258 | {{/if}} 259 | 260 | {{#if playground_line_numbers}} 261 | 264 | {{/if}} 265 | 266 | {{#if playground_copyable}} 267 | 270 | {{/if}} 271 | 272 | {{#if playground_js}} 273 | 274 | 275 | 276 | 277 | 278 | {{/if}} 279 | 280 | {{#if search_js}} 281 | 282 | 283 | 284 | {{/if}} 285 | 286 | 287 | 288 | 289 | 290 | 291 | {{#each additional_js}} 292 | 293 | {{/each}} 294 | 295 | {{#if is_print}} 296 | {{#if mathjax_support}} 297 | 304 | {{else}} 305 | 310 | {{/if}} 311 | {{/if}} 312 | 313 | 314 | 315 | -------------------------------------------------------------------------------- /theme/book.js: -------------------------------------------------------------------------------- 1 | "use strict"; 2 | 3 | // Fix back button cache problem 4 | window.onunload = function () { }; 5 | 6 | // Global variable, shared between modules 7 | function playground_text(playground) { 8 | let code_block = playground.querySelector("code"); 9 | 10 | if (window.ace && code_block.classList.contains("editable")) { 11 | let editor = window.ace.edit(code_block); 12 | return editor.getValue(); 13 | } else { 14 | return code_block.textContent; 15 | } 16 | } 17 | 18 | (function codeSnippets() { 19 | function fetch_with_timeout(url, options, timeout = 6000) { 20 | return Promise.race([ 21 | fetch(url, options), 22 | new Promise((_, reject) => setTimeout(() => reject(new Error('timeout')), timeout)) 23 | ]); 24 | } 25 | 26 | var playgrounds = Array.from(document.querySelectorAll(".playground")); 27 | if (playgrounds.length > 0) { 28 | fetch_with_timeout("https://play.rust-lang.org/meta/crates", { 29 | headers: { 30 | 'Content-Type': "application/json", 31 | }, 32 | method: 'POST', 33 | mode: 'cors', 34 | }) 35 | .then(response => response.json()) 36 | .then(response => { 37 | // get list of crates available in the rust playground 38 | let playground_crates = response.crates.map(item => item["id"]); 39 | playgrounds.forEach(block => handle_crate_list_update(block, playground_crates)); 40 | }); 41 | } 42 | 43 | function handle_crate_list_update(playground_block, playground_crates) { 44 | // update the play buttons after receiving the response 45 | update_play_button(playground_block, playground_crates); 46 | 47 | // and install on change listener to dynamically update ACE editors 48 | if (window.ace) { 49 | let code_block = playground_block.querySelector("code"); 50 | if (code_block.classList.contains("editable")) { 51 | let editor = window.ace.edit(code_block); 52 | editor.addEventListener("change", function (e) { 53 | update_play_button(playground_block, playground_crates); 54 | }); 55 | // add Ctrl-Enter command to execute rust code 56 | editor.commands.addCommand({ 57 | name: "run", 58 | bindKey: { 59 | win: "Ctrl-Enter", 60 | mac: "Ctrl-Enter" 61 | }, 62 | exec: _editor => run_rust_code(playground_block) 63 | }); 64 | } 65 | } 66 | } 67 | 68 | // updates the visibility of play button based on `no_run` class and 69 | // used crates vs ones available on http://play.rust-lang.org 70 | function update_play_button(pre_block, playground_crates) { 71 | var play_button = pre_block.querySelector(".play-button"); 72 | 73 | // skip if code is `no_run` 74 | if (pre_block.querySelector('code').classList.contains("no_run")) { 75 | play_button.classList.add("hidden"); 76 | return; 77 | } 78 | 79 | // get list of `extern crate`'s from snippet 80 | var txt = playground_text(pre_block); 81 | var re = /extern\s+crate\s+([a-zA-Z_0-9]+)\s*;/g; 82 | var snippet_crates = []; 83 | var item; 84 | while (item = re.exec(txt)) { 85 | snippet_crates.push(item[1]); 86 | } 87 | 88 | // check if all used crates are available on play.rust-lang.org 89 | var all_available = snippet_crates.every(function (elem) { 90 | return playground_crates.indexOf(elem) > -1; 91 | }); 92 | 93 | if (all_available) { 94 | play_button.classList.remove("hidden"); 95 | } else { 96 | play_button.classList.add("hidden"); 97 | } 98 | } 99 | 100 | function run_rust_code(code_block) { 101 | var result_block = code_block.querySelector(".result"); 102 | if (!result_block) { 103 | result_block = document.createElement('code'); 104 | result_block.className = 'result hljs language-bash'; 105 | 106 | code_block.append(result_block); 107 | } 108 | 109 | let text = playground_text(code_block); 110 | let classes = code_block.querySelector('code').classList; 111 | let edition = "2015"; 112 | if(classes.contains("edition2018")) { 113 | edition = "2018"; 114 | } else if(classes.contains("edition2021")) { 115 | edition = "2021"; 116 | } 117 | var params = { 118 | version: "stable", 119 | optimize: "0", 120 | code: text, 121 | edition: edition 122 | }; 123 | 124 | if (text.indexOf("#![feature") !== -1) { 125 | params.version = "nightly"; 126 | } 127 | 128 | result_block.innerText = "Running..."; 129 | 130 | fetch_with_timeout("https://play.rust-lang.org/evaluate.json", { 131 | headers: { 132 | 'Content-Type': "application/json", 133 | }, 134 | method: 'POST', 135 | mode: 'cors', 136 | body: JSON.stringify(params) 137 | }) 138 | .then(response => response.json()) 139 | .then(response => { 140 | if (response.result.trim() === '') { 141 | result_block.innerText = "No output"; 142 | result_block.classList.add("result-no-output"); 143 | } else { 144 | result_block.innerText = response.result; 145 | result_block.classList.remove("result-no-output"); 146 | } 147 | }) 148 | .catch(error => result_block.innerText = "Playground Communication: " + error.message); 149 | } 150 | 151 | // Syntax highlighting Configuration 152 | hljs.configure({ 153 | tabReplace: ' ', // 4 spaces 154 | languages: [], // Languages used for auto-detection 155 | }); 156 | 157 | let code_nodes = Array 158 | .from(document.querySelectorAll('code')) 159 | // Don't highlight `inline code` blocks in headers. 160 | .filter(function (node) {return !node.parentElement.classList.contains("header"); }); 161 | 162 | if (window.ace) { 163 | // language-rust class needs to be removed for editable 164 | // blocks or highlightjs will capture events 165 | code_nodes 166 | .filter(function (node) {return node.classList.contains("editable"); }) 167 | .forEach(function (block) { block.classList.remove('language-rust'); }); 168 | 169 | Array 170 | code_nodes 171 | .filter(function (node) {return !node.classList.contains("editable"); }) 172 | .forEach(function (block) { hljs.highlightBlock(block); }); 173 | } else { 174 | code_nodes.forEach(function (block) { hljs.highlightBlock(block); }); 175 | } 176 | 177 | // Adding the hljs class gives code blocks the color css 178 | // even if highlighting doesn't apply 179 | code_nodes.forEach(function (block) { block.classList.add('hljs'); }); 180 | 181 | Array.from(document.querySelectorAll("code.language-rust")).forEach(function (block) { 182 | 183 | var lines = Array.from(block.querySelectorAll('.boring')); 184 | // If no lines were hidden, return 185 | if (!lines.length) { return; } 186 | block.classList.add("hide-boring"); 187 | 188 | var buttons = document.createElement('div'); 189 | buttons.className = 'buttons'; 190 | buttons.innerHTML = ""; 191 | 192 | // add expand button 193 | var pre_block = block.parentNode; 194 | pre_block.insertBefore(buttons, pre_block.firstChild); 195 | 196 | pre_block.querySelector('.buttons').addEventListener('click', function (e) { 197 | if (e.target.classList.contains('fa-eye')) { 198 | e.target.classList.remove('fa-eye'); 199 | e.target.classList.add('fa-eye-slash'); 200 | e.target.title = 'Hide lines'; 201 | e.target.setAttribute('aria-label', e.target.title); 202 | 203 | block.classList.remove('hide-boring'); 204 | } else if (e.target.classList.contains('fa-eye-slash')) { 205 | e.target.classList.remove('fa-eye-slash'); 206 | e.target.classList.add('fa-eye'); 207 | e.target.title = 'Show hidden lines'; 208 | e.target.setAttribute('aria-label', e.target.title); 209 | 210 | block.classList.add('hide-boring'); 211 | } 212 | }); 213 | }); 214 | 215 | if (window.playground_copyable) { 216 | Array.from(document.querySelectorAll('pre code')).forEach(function (block) { 217 | var pre_block = block.parentNode; 218 | if (!pre_block.classList.contains('playground')) { 219 | var buttons = pre_block.querySelector(".buttons"); 220 | if (!buttons) { 221 | buttons = document.createElement('div'); 222 | buttons.className = 'buttons'; 223 | pre_block.insertBefore(buttons, pre_block.firstChild); 224 | } 225 | 226 | var clipButton = document.createElement('button'); 227 | clipButton.className = 'fa fa-copy clip-button'; 228 | clipButton.title = 'Copy to clipboard'; 229 | clipButton.setAttribute('aria-label', clipButton.title); 230 | clipButton.innerHTML = ''; 231 | 232 | buttons.insertBefore(clipButton, buttons.firstChild); 233 | } 234 | }); 235 | } 236 | 237 | // Process playground code blocks 238 | Array.from(document.querySelectorAll(".playground")).forEach(function (pre_block) { 239 | // Add play button 240 | var buttons = pre_block.querySelector(".buttons"); 241 | if (!buttons) { 242 | buttons = document.createElement('div'); 243 | buttons.className = 'buttons'; 244 | pre_block.insertBefore(buttons, pre_block.firstChild); 245 | } 246 | 247 | var runCodeButton = document.createElement('button'); 248 | runCodeButton.className = 'fa fa-play play-button'; 249 | runCodeButton.hidden = true; 250 | runCodeButton.title = 'Run this code'; 251 | runCodeButton.setAttribute('aria-label', runCodeButton.title); 252 | 253 | buttons.insertBefore(runCodeButton, buttons.firstChild); 254 | runCodeButton.addEventListener('click', function (e) { 255 | run_rust_code(pre_block); 256 | }); 257 | 258 | if (window.playground_copyable) { 259 | var copyCodeClipboardButton = document.createElement('button'); 260 | copyCodeClipboardButton.className = 'fa fa-copy clip-button'; 261 | copyCodeClipboardButton.innerHTML = ''; 262 | copyCodeClipboardButton.title = 'Copy to clipboard'; 263 | copyCodeClipboardButton.setAttribute('aria-label', copyCodeClipboardButton.title); 264 | 265 | buttons.insertBefore(copyCodeClipboardButton, buttons.firstChild); 266 | } 267 | 268 | let code_block = pre_block.querySelector("code"); 269 | if (window.ace && code_block.classList.contains("editable")) { 270 | var undoChangesButton = document.createElement('button'); 271 | undoChangesButton.className = 'fa fa-history reset-button'; 272 | undoChangesButton.title = 'Undo changes'; 273 | undoChangesButton.setAttribute('aria-label', undoChangesButton.title); 274 | 275 | buttons.insertBefore(undoChangesButton, buttons.firstChild); 276 | 277 | undoChangesButton.addEventListener('click', function () { 278 | let editor = window.ace.edit(code_block); 279 | editor.setValue(editor.originalCode); 280 | editor.clearSelection(); 281 | }); 282 | } 283 | }); 284 | })(); 285 | 286 | (function themes() { 287 | var html = document.querySelector('html'); 288 | var themeToggleButton = document.getElementById('theme-toggle'); 289 | var themePopup = document.getElementById('theme-list'); 290 | var themeColorMetaTag = document.querySelector('meta[name="theme-color"]'); 291 | var stylesheets = { 292 | ayuHighlight: document.querySelector("[href$='ayu-highlight.css']"), 293 | tomorrowNight: document.querySelector("[href$='tomorrow-night.css']"), 294 | highlight: document.querySelector("[href$='highlight.css']"), 295 | }; 296 | 297 | function showThemes() { 298 | themePopup.style.display = 'block'; 299 | themeToggleButton.setAttribute('aria-expanded', true); 300 | themePopup.querySelector("button#" + get_theme()).focus(); 301 | } 302 | 303 | function hideThemes() { 304 | themePopup.style.display = 'none'; 305 | themeToggleButton.setAttribute('aria-expanded', false); 306 | themeToggleButton.focus(); 307 | } 308 | 309 | function get_theme() { 310 | var theme; 311 | try { theme = localStorage.getItem('mdbook-theme'); } catch (e) { } 312 | if (theme === null || theme === undefined) { 313 | return default_theme; 314 | } else { 315 | return theme; 316 | } 317 | } 318 | 319 | function set_theme(theme, store = true) { 320 | let ace_theme; 321 | 322 | if (theme == 'coal' || theme == 'navy') { 323 | stylesheets.ayuHighlight.disabled = true; 324 | stylesheets.tomorrowNight.disabled = false; 325 | stylesheets.highlight.disabled = true; 326 | 327 | ace_theme = "ace/theme/tomorrow_night"; 328 | } else if (theme == 'ayu') { 329 | stylesheets.ayuHighlight.disabled = false; 330 | stylesheets.tomorrowNight.disabled = true; 331 | stylesheets.highlight.disabled = true; 332 | ace_theme = "ace/theme/tomorrow_night"; 333 | } else { 334 | stylesheets.ayuHighlight.disabled = true; 335 | stylesheets.tomorrowNight.disabled = true; 336 | stylesheets.highlight.disabled = false; 337 | ace_theme = "ace/theme/dawn"; 338 | } 339 | 340 | setTimeout(function () { 341 | themeColorMetaTag.content = getComputedStyle(document.body).backgroundColor; 342 | }, 1); 343 | 344 | if (window.ace && window.editors) { 345 | window.editors.forEach(function (editor) { 346 | editor.setTheme(ace_theme); 347 | }); 348 | } 349 | 350 | var previousTheme = get_theme(); 351 | 352 | if (store) { 353 | try { localStorage.setItem('mdbook-theme', theme); } catch (e) { } 354 | } 355 | 356 | html.classList.remove(previousTheme); 357 | html.classList.add(theme); 358 | } 359 | 360 | // Set theme 361 | var theme = get_theme(); 362 | 363 | set_theme(theme, false); 364 | 365 | themeToggleButton.addEventListener('click', function () { 366 | if (themePopup.style.display === 'block') { 367 | hideThemes(); 368 | } else { 369 | showThemes(); 370 | } 371 | }); 372 | 373 | themePopup.addEventListener('click', function (e) { 374 | var theme; 375 | if (e.target.className === "theme") { 376 | theme = e.target.id; 377 | } else if (e.target.parentElement.className === "theme") { 378 | theme = e.target.parentElement.id; 379 | } else { 380 | return; 381 | } 382 | set_theme(theme); 383 | }); 384 | 385 | themePopup.addEventListener('focusout', function(e) { 386 | // e.relatedTarget is null in Safari and Firefox on macOS (see workaround below) 387 | if (!!e.relatedTarget && !themeToggleButton.contains(e.relatedTarget) && !themePopup.contains(e.relatedTarget)) { 388 | hideThemes(); 389 | } 390 | }); 391 | 392 | // Should not be needed, but it works around an issue on macOS & iOS: https://github.com/rust-lang/mdBook/issues/628 393 | document.addEventListener('click', function(e) { 394 | if (themePopup.style.display === 'block' && !themeToggleButton.contains(e.target) && !themePopup.contains(e.target)) { 395 | hideThemes(); 396 | } 397 | }); 398 | 399 | document.addEventListener('keydown', function (e) { 400 | if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; } 401 | if (!themePopup.contains(e.target)) { return; } 402 | 403 | switch (e.key) { 404 | case 'Escape': 405 | e.preventDefault(); 406 | hideThemes(); 407 | break; 408 | case 'ArrowUp': 409 | e.preventDefault(); 410 | var li = document.activeElement.parentElement; 411 | if (li && li.previousElementSibling) { 412 | li.previousElementSibling.querySelector('button').focus(); 413 | } 414 | break; 415 | case 'ArrowDown': 416 | e.preventDefault(); 417 | var li = document.activeElement.parentElement; 418 | if (li && li.nextElementSibling) { 419 | li.nextElementSibling.querySelector('button').focus(); 420 | } 421 | break; 422 | case 'Home': 423 | e.preventDefault(); 424 | themePopup.querySelector('li:first-child button').focus(); 425 | break; 426 | case 'End': 427 | e.preventDefault(); 428 | themePopup.querySelector('li:last-child button').focus(); 429 | break; 430 | } 431 | }); 432 | })(); 433 | 434 | (function sidebar() { 435 | var html = document.querySelector("html"); 436 | var sidebar = document.getElementById("sidebar"); 437 | var sidebarLinks = document.querySelectorAll('#sidebar a'); 438 | var sidebarToggleButton = document.getElementById("sidebar-toggle"); 439 | var sidebarResizeHandle = document.getElementById("sidebar-resize-handle"); 440 | var firstContact = null; 441 | 442 | function showSidebar() { 443 | html.classList.remove('sidebar-hidden') 444 | html.classList.add('sidebar-visible'); 445 | Array.from(sidebarLinks).forEach(function (link) { 446 | link.setAttribute('tabIndex', 0); 447 | }); 448 | sidebarToggleButton.setAttribute('aria-expanded', true); 449 | sidebar.setAttribute('aria-hidden', false); 450 | try { localStorage.setItem('mdbook-sidebar', 'visible'); } catch (e) { } 451 | } 452 | 453 | 454 | var sidebarAnchorToggles = document.querySelectorAll('#sidebar a.toggle'); 455 | 456 | function toggleSection(ev) { 457 | ev.currentTarget.parentElement.classList.toggle('expanded'); 458 | } 459 | 460 | Array.from(sidebarAnchorToggles).forEach(function (el) { 461 | el.addEventListener('click', toggleSection); 462 | }); 463 | 464 | function hideSidebar() { 465 | html.classList.remove('sidebar-visible') 466 | html.classList.add('sidebar-hidden'); 467 | Array.from(sidebarLinks).forEach(function (link) { 468 | link.setAttribute('tabIndex', -1); 469 | }); 470 | sidebarToggleButton.setAttribute('aria-expanded', false); 471 | sidebar.setAttribute('aria-hidden', true); 472 | try { localStorage.setItem('mdbook-sidebar', 'hidden'); } catch (e) { } 473 | } 474 | 475 | // Toggle sidebar 476 | sidebarToggleButton.addEventListener('click', function sidebarToggle() { 477 | if (html.classList.contains("sidebar-hidden")) { 478 | var current_width = parseInt( 479 | document.documentElement.style.getPropertyValue('--sidebar-width'), 10); 480 | if (current_width < 150) { 481 | document.documentElement.style.setProperty('--sidebar-width', '150px'); 482 | } 483 | showSidebar(); 484 | } else if (html.classList.contains("sidebar-visible")) { 485 | hideSidebar(); 486 | } else { 487 | if (getComputedStyle(sidebar)['transform'] === 'none') { 488 | hideSidebar(); 489 | } else { 490 | showSidebar(); 491 | } 492 | } 493 | }); 494 | 495 | sidebarResizeHandle.addEventListener('mousedown', initResize, false); 496 | 497 | function initResize(e) { 498 | window.addEventListener('mousemove', resize, false); 499 | window.addEventListener('mouseup', stopResize, false); 500 | html.classList.add('sidebar-resizing'); 501 | } 502 | function resize(e) { 503 | var pos = (e.clientX - sidebar.offsetLeft); 504 | if (pos < 20) { 505 | hideSidebar(); 506 | } else { 507 | if (html.classList.contains("sidebar-hidden")) { 508 | showSidebar(); 509 | } 510 | pos = Math.min(pos, window.innerWidth - 100); 511 | document.documentElement.style.setProperty('--sidebar-width', pos + 'px'); 512 | } 513 | } 514 | //on mouseup remove windows functions mousemove & mouseup 515 | function stopResize(e) { 516 | html.classList.remove('sidebar-resizing'); 517 | window.removeEventListener('mousemove', resize, false); 518 | window.removeEventListener('mouseup', stopResize, false); 519 | } 520 | 521 | document.addEventListener('touchstart', function (e) { 522 | firstContact = { 523 | x: e.touches[0].clientX, 524 | time: Date.now() 525 | }; 526 | }, { passive: true }); 527 | 528 | document.addEventListener('touchmove', function (e) { 529 | if (!firstContact) 530 | return; 531 | 532 | var curX = e.touches[0].clientX; 533 | var xDiff = curX - firstContact.x, 534 | tDiff = Date.now() - firstContact.time; 535 | 536 | if (tDiff < 250 && Math.abs(xDiff) >= 150) { 537 | if (xDiff >= 0 && firstContact.x < Math.min(document.body.clientWidth * 0.25, 300)) 538 | showSidebar(); 539 | else if (xDiff < 0 && curX < 300) 540 | hideSidebar(); 541 | 542 | firstContact = null; 543 | } 544 | }, { passive: true }); 545 | 546 | // Scroll sidebar to current active section 547 | var activeSection = document.getElementById("sidebar").querySelector(".active"); 548 | if (activeSection) { 549 | // https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView 550 | activeSection.scrollIntoView({ block: 'center' }); 551 | } 552 | })(); 553 | 554 | (function chapterNavigation() { 555 | document.addEventListener('keydown', function (e) { 556 | if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; } 557 | if (window.search && window.search.hasFocus()) { return; } 558 | 559 | switch (e.key) { 560 | case 'ArrowRight': 561 | e.preventDefault(); 562 | var nextButton = document.querySelector('.nav-chapters.next'); 563 | if (nextButton) { 564 | window.location.href = nextButton.href; 565 | } 566 | break; 567 | case 'ArrowLeft': 568 | e.preventDefault(); 569 | var previousButton = document.querySelector('.nav-chapters.previous'); 570 | if (previousButton) { 571 | window.location.href = previousButton.href; 572 | } 573 | break; 574 | } 575 | }); 576 | })(); 577 | 578 | (function clipboard() { 579 | var clipButtons = document.querySelectorAll('.clip-button'); 580 | 581 | function hideTooltip(elem) { 582 | elem.firstChild.innerText = ""; 583 | elem.className = 'fa fa-copy clip-button'; 584 | } 585 | 586 | function showTooltip(elem, msg) { 587 | elem.firstChild.innerText = msg; 588 | elem.className = 'fa fa-copy tooltipped'; 589 | } 590 | 591 | var clipboardSnippets = new ClipboardJS('.clip-button', { 592 | text: function (trigger) { 593 | hideTooltip(trigger); 594 | let playground = trigger.closest("pre"); 595 | return playground_text(playground); 596 | } 597 | }); 598 | 599 | Array.from(clipButtons).forEach(function (clipButton) { 600 | clipButton.addEventListener('mouseout', function (e) { 601 | hideTooltip(e.currentTarget); 602 | }); 603 | }); 604 | 605 | clipboardSnippets.on('success', function (e) { 606 | e.clearSelection(); 607 | showTooltip(e.trigger, "Copied!"); 608 | }); 609 | 610 | clipboardSnippets.on('error', function (e) { 611 | showTooltip(e.trigger, "Clipboard error!"); 612 | }); 613 | })(); 614 | 615 | (function scrollToTop () { 616 | var menuTitle = document.querySelector('.menu-title'); 617 | 618 | menuTitle.addEventListener('click', function () { 619 | document.scrollingElement.scrollTo({ top: 0, behavior: 'smooth' }); 620 | }); 621 | })(); 622 | 623 | (function controllMenu() { 624 | var menu = document.getElementById('menu-bar'); 625 | 626 | (function controllPosition() { 627 | var scrollTop = document.scrollingElement.scrollTop; 628 | var prevScrollTop = scrollTop; 629 | var minMenuY = -menu.clientHeight - 50; 630 | // When the script loads, the page can be at any scroll (e.g. if you reforesh it). 631 | menu.style.top = scrollTop + 'px'; 632 | // Same as parseInt(menu.style.top.slice(0, -2), but faster 633 | var topCache = menu.style.top.slice(0, -2); 634 | menu.classList.remove('sticky'); 635 | var stickyCache = false; // Same as menu.classList.contains('sticky'), but faster 636 | document.addEventListener('scroll', function () { 637 | scrollTop = Math.max(document.scrollingElement.scrollTop, 0); 638 | // `null` means that it doesn't need to be updated 639 | var nextSticky = null; 640 | var nextTop = null; 641 | var scrollDown = scrollTop > prevScrollTop; 642 | var menuPosAbsoluteY = topCache - scrollTop; 643 | if (scrollDown) { 644 | nextSticky = false; 645 | if (menuPosAbsoluteY > 0) { 646 | nextTop = prevScrollTop; 647 | } 648 | } else { 649 | if (menuPosAbsoluteY > 0) { 650 | nextSticky = true; 651 | } else if (menuPosAbsoluteY < minMenuY) { 652 | nextTop = prevScrollTop + minMenuY; 653 | } 654 | } 655 | if (nextSticky === true && stickyCache === false) { 656 | menu.classList.add('sticky'); 657 | stickyCache = true; 658 | } else if (nextSticky === false && stickyCache === true) { 659 | menu.classList.remove('sticky'); 660 | stickyCache = false; 661 | } 662 | if (nextTop !== null) { 663 | menu.style.top = nextTop + 'px'; 664 | topCache = nextTop; 665 | } 666 | prevScrollTop = scrollTop; 667 | }, { passive: true }); 668 | })(); 669 | (function controllBorder() { 670 | menu.classList.remove('bordered'); 671 | document.addEventListener('scroll', function () { 672 | if (menu.offsetTop === 0) { 673 | menu.classList.remove('bordered'); 674 | } else 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