commit 992cbfe46511010351eb576dea44313e3c529c8a
Author: cy6erlion <dev@merely.tech>
Date: Tue, 29 Dec 2020 16:46:42 +0200
initial commit
Diffstat:
| A | .gitignore | | | 2 | ++ |
| A | Cargo.lock | | | 456 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | Cargo.toml | | | 18 | ++++++++++++++++++ |
| A | README.md | | | 50 | ++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | src/fetch.rs | | | 101 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | src/lib.rs | | | 129 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | src/main.rs | | | 35 | +++++++++++++++++++++++++++++++++++ |
7 files changed, 791 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,2 @@
+*~
+/target
diff --git a/Cargo.lock b/Cargo.lock
@@ -0,0 +1,456 @@
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diff --git a/Cargo.toml b/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "rfc"
+version = "0.1.0"
+authors = ["cy6erlion <dev@merely.tech>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+# For parsing command line arguments
+clap = "2.33.3"
+# Minimal HTTP client
+minreq = {version = "2.2.1", features = ["https"]}
+# Pager
+pager = "0.16.0"
+# Directories
+dirs-next = "2.0.0"
+\ No newline at end of file
diff --git a/README.md b/README.md
@@ -0,0 +1,50 @@
+``` text
+█▀▄ █▀ ▄▀▀
+█▀▄ █▀ ▀▄▄
+```
+rfc 0.1.0
+A program to read RFCs in the terminal.
+
+USAGE:
+
+ rfc [OPTIONS] [SUBCOMMAND]
+
+ FLAGS:
+ -h, --help Prints help information
+ -V, --version Prints version information
+
+ OPTIONS:
+ -n, --number <serial> RFC Serial Number
+
+ SUBCOMMANDS:
+ help Prints this message or the help of the given subcommand(s)
+ update Update RFC Index
+
+## Features
+* RFC index browser
+* Read By RFC number
+* Local Storage in (`~/rfc/` on unix systems and `C:\Users\{NAME}` on
+ windows)
+* Pager
+
+## Guide
+
+### Running
+To run simply type the following command in the shell to start the RFC
+browser:
+
+``` bash
+$ rfc
+```
+
+### Read RFC by number
+``` bash
+$ rfc -n 1
+```
+
+### Update
+To update the local RFC index, use the following command:
+
+``` bash
+$ rfc update
+```
diff --git a/src/fetch.rs b/src/fetch.rs
@@ -0,0 +1,101 @@
+use std::fs::File;
+use std::fs::OpenOptions;
+use std::io::prelude::*;
+
+// Download RFC index file
+pub fn index() -> Result<(), minreq::Error> {
+ println!("Fetching RFC index");
+ let response = minreq::get("https://www.rfc-editor.org/rfc-index.txt").send()?;
+ let data = scrape(response.as_str()?);
+ persist_index(data);
+ Ok(())
+}
+
+// Download RFC localy
+pub fn rfc(sn: u32) -> Result<(), minreq::Error> {
+ println!("Fetching RFC #{}", sn);
+ let address = format!("https://www.rfc-editor.org/rfc/rfc{}.txt", sn);
+
+ println!("{}", address);
+ let response = minreq::get(&address).send()?;
+ persist_rfc(sn, response.as_str()?);
+ Ok(())
+}
+
+// Save index localy
+pub fn persist_index(index: Vec<String>) {
+ if let Some(home_path) = dirs_next::home_dir() {
+ let path = if cfg!(unix) || cfg!(macos) {
+ format!("{}/rfc/INDEX", home_path.to_str().unwrap())
+ } else if cfg!(windows) {
+ format!("{}\\rfc\\INDEX", home_path.to_str().unwrap())
+ } else {
+ panic!("Unsupported OS");
+ };
+
+ let file = File::create(&path).expect("Unable to create file");
+ let mut file = OpenOptions::new()
+ .write(true)
+ .append(true)
+ .open(&path)
+ .unwrap();
+
+ for rfc in index.iter() {
+ if let Err(e) = writeln!(file, "{}", rfc) {
+ eprintln!("Couldn't write to file: {}", e);
+ }
+ }
+ } else {
+ panic!("Could not find home directory");
+ }
+}
+
+// Save RFC localy
+pub fn persist_rfc(sn: u32, rfc: &str) {
+ if let Some(home_path) = dirs_next::home_dir() {
+ let path = if cfg!(unix) || cfg!(macos) {
+ format!("{}/rfc/{}", home_path.to_str().unwrap(), sn)
+ } else if cfg!(windows) {
+ format!("{}\\rfc\\{}", home_path.to_str().unwrap(), sn)
+ } else {
+ panic!("Unsupported OS");
+ };
+
+ let file = File::create(&path).expect("Unable to create file");
+ let mut file = OpenOptions::new()
+ .write(true)
+ .append(true)
+ .open(path)
+ .unwrap();
+
+ if let Err(e) = writeln!(file, "{}", rfc) {
+ eprintln!("Couldn't write to file: {}", e);
+ }
+ } else {
+ panic!("Could not find home directory");
+ }
+}
+
+// TODO: fix bug causing not to return the last RFC
+pub fn scrape(data: &str) -> Vec<String> {
+ let mut count = 0;
+ let mut rfcs = vec![];
+ let mut buff = String::from("");
+
+ for line in data.lines() {
+ // Skip first 65 lines
+ if count > 65 {
+ // Detect blank lines
+ if line == "" {
+ rfcs.push(buff);
+ buff = String::from("");
+ } else {
+ buff = format!("{}{}", buff, line);
+ }
+ } else {
+ count = count + 1;
+ }
+ }
+
+ rfcs
+}
diff --git a/src/lib.rs b/src/lib.rs
@@ -0,0 +1,129 @@
+extern crate dirs_next;
+extern crate pager;
+
+use pager::Pager;
+use std::fs::File;
+use std::io::{BufReader, Read};
+use std::path::Path;
+
+mod fetch;
+
+pub fn list_view() {
+ if !index_exists().unwrap() {
+ // Download all RFCs
+ fetch::index().unwrap();
+ }
+
+ let path = if let Some(home_path) = dirs_next::home_dir() {
+ if cfg!(unix) || cfg!(macos) {
+ format!("{}/rfc/INDEX", home_path.to_str().unwrap())
+ } else if cfg!(windows) {
+ format!("{}\\rfc\\INDEX", home_path.to_str().unwrap())
+ } else {
+ panic!("Unsupported OS");
+ }
+ } else {
+ panic!("No home directory");
+ };
+
+ let mut index = String::new();
+ let f = File::open(&path).expect("Unable to open file");
+ let mut br = BufReader::new(f);
+ let mut dots = "";
+
+ br.read_to_string(&mut index).expect("Unable to read INDEX");
+
+ Pager::with_pager("less -r").setup();
+
+ for line in index.lines() {
+ let line_words: Vec<&str> = line.split(' ').collect();
+ let summerize: String = line.chars().skip(line_words[0].len()).take(77).collect();
+
+ if line.len() >= 77 {
+ dots = "...";
+ }
+
+ println!("{} | {}{}", line_words[0], summerize, dots);
+
+ dots = "";
+ }
+}
+
+// Read RFC by serial number
+pub fn read_rfc(sn: u32) {
+ // check if RFC is downloaded
+ if !is_rfc_downloaded(sn).unwrap() {
+ // download RFC
+ println!("Downloading rfc");
+ fetch::rfc(sn).unwrap();
+ }
+
+ let path = if let Some(home_path) = dirs_next::home_dir() {
+ if cfg!(unix) || cfg!(macos) {
+ format!("{}/rfc/{}", home_path.to_str().unwrap(), sn)
+ } else if cfg!(windows) {
+ format!("{}\\rfc\\{}", home_path.to_str().unwrap(), sn)
+ } else {
+ panic!("Unsupported OS");
+ }
+ } else {
+ panic!("No home directory");
+ };
+
+ let mut rfc = String::new();
+ let f = File::open(&path).expect("Unable to open file");
+ let mut br = BufReader::new(f);
+ br.read_to_string(&mut rfc).expect("Unable to read RFC");
+
+ // Read RFC
+ Pager::with_pager("less -r").setup();
+ println!("{}", &rfc);
+}
+
+// Update RFC
+pub fn update() {
+ fetch::index().unwrap();
+}
+
+// Check if it is first time running by
+// checking if config files exist
+fn index_exists() -> Result<bool, ()> {
+ if let Some(home_path) = dirs_next::home_dir() {
+ let path = if cfg!(unix) || cfg!(macos) {
+ format!("{}/rfc/INDEX", home_path.to_str().unwrap())
+ } else if cfg!(windows) {
+ format!("{}\\rfc\\INDEX", home_path.to_str().unwrap())
+ } else {
+ panic!("Unsupported OS");
+ };
+
+ if Path::new(&path).exists() {
+ return Ok(true);
+ } else {
+ return Ok(false);
+ }
+ } else {
+ panic!("Could not find home directory");
+ }
+}
+
+// Check if an RFC has been downloaded locally
+fn is_rfc_downloaded(sn: u32) -> Result<bool, ()> {
+ if let Some(home_path) = dirs_next::home_dir() {
+ let path = if cfg!(unix) || cfg!(macos) {
+ format!("{}/rfc/{}", home_path.to_str().unwrap(), sn)
+ } else if cfg!(windows) {
+ format!("{}\\rfc\\{}", home_path.to_str().unwrap(), sn)
+ } else {
+ panic!("Unsupported OS");
+ };
+
+ if Path::new(&path).exists() {
+ return Ok(true);
+ } else {
+ return Ok(false);
+ }
+ } else {
+ panic!("Could not find home directory");
+ }
+}
diff --git a/src/main.rs b/src/main.rs
@@ -0,0 +1,35 @@
+use clap::{App, Arg, SubCommand};
+
+fn main() {
+ let matches = App::new("rfc")
+ .version("0.1.0")
+ .about("A program to read RFCs in the terminal.")
+ .arg(
+ Arg::with_name("Number")
+ .short("n")
+ .long("number")
+ .value_name("serial")
+ .help("RFC Serial Number")
+ .takes_value(true),
+ )
+ .subcommand(SubCommand::with_name("update").about("Update RFC Index"))
+ .get_matches();
+
+ // Read RFC by serial number
+ if let Some(n) = matches.value_of("Number") {
+ rfc::read_rfc(
+ n.parse::<u32>()
+ .expect("RFC Serial Number should be a numeric value!"),
+ );
+ return;
+ }
+
+ // Update RFC index
+ if let Some(matches) = matches.subcommand_matches("update") {
+ rfc::update();
+ return;
+ }
+
+ // Display RFC list view
+ rfc::list_view();
+}
