First commit

.gitignore

@@ -0,0 +1,12 @@
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here http://doc.crates.io/guide.html#cargotoml-vs-cargolock
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+.buildconfig

.travis.yml

@@ -0,0 +1,6 @@
+language: rust
+rust:
+  - stable
+cache: cargo
+matrix:
+  fast_finish: true

CHANGELOG.md

@@ -0,0 +1,4 @@
+# Changelog
+
+## 0.1.0
+* First version

Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "duri"
+version = "0.1.0"
+authors = ["Nguyễn Hồng Quân <ng.hong.quan@gmail.com>"]
+edition = "2018"
+license = "GPL-3.0"
+description = "CLI tool to get data URI of a file"
+readme = "README.md"
+
+[package.metadata.deb]
+extended-description = """CLI tool to read a file and return its content as data URI.
+It is useful when you want to upload file to a HTTP API, which requires data to be posted as JSON string.
+You then can use this tool to get the file's base64-encoded content, passed to "jo" to build JSON string.
+"""
+
+[dependencies]
+tree_magic_mini = "3.0.0"
+clap = { version = "3.0.0-beta.2", features = [ "suggestions", "color" ] }
+log = "0.4.14"
+flexi_logger = { version = "0.18.0", features = ["colors"] }
+color-eyre = "0.5.11"
+base64 = "0.13.0"
+urlencoding = "1.3.3"

README.md

@@ -0,0 +1,5 @@
+# Duri #
+
+CLI tool to get data URI of a file
+
+## Use case

src/main.rs

@@ -0,0 +1,74 @@
+use std::path::Path;
+use std::io::{stdin, Read};
+use std::fs::File;
+use std::str;
+
+use log;
+use base64;
+use tree_magic_mini;
+use urlencoding::encode as urlencode;
+use color_eyre::eyre::{Result};
+use clap::{crate_version, crate_authors, crate_description, Clap};
+use flexi_logger::Logger;
+
+
+#[derive(Clap)]
+#[clap(version = crate_version!(), author = crate_authors!(), about = crate_description!())]
+struct Opts {
+    #[clap(about = "Input file, pass \"-\" for standard input.")]
+    infile: String,
+    #[clap(short, long, about = "Prefer percent encoding for text file.")]
+    text: bool,
+    #[clap(short, long, parse(from_occurrences), about = "Verbosity level (repeat to increase).")]
+    verbose: i8,
+}
+
+
+fn read_input(infile: &str) -> Result<Vec<u8>> {
+    match infile {
+        "-" => {
+            let mut buf = Vec::<u8>::new();
+            let mut stdin = stdin();
+            stdin.read_to_end(&mut buf)?;
+            Ok(buf)
+        },
+        _ => {
+            let path = Path::new(infile);
+            let mut buf = Vec::<u8>::new();
+            File::open(path)?.read_to_end(&mut buf)?;
+            Ok(buf)
+        }
+    }
+}
+
+
+fn encode(content: Vec<u8>, mtype: &str, prefer_percent: bool) -> Result<String> {
+    let mut body = String::new();
+    if prefer_percent && mtype.starts_with("text/") {
+        body = urlencode(str::from_utf8(&content)?)
+    } else {
+        base64::encode_config_buf(&content, base64::URL_SAFE, &mut body)
+    }
+    Ok(body)
+}
+
+
+fn main() -> Result<()> {
+    let opts = Opts::parse();
+    let level = match opts.verbose {
+        0 => "warning",
+        1 => "info",
+        _ => "debug"
+    };
+    Logger::try_with_str(level)?.start()?;
+    log::debug!("Process file {}", opts.infile);
+    let infile = opts.infile.trim();
+    let content = read_input(infile)?;
+    let mtype = tree_magic_mini::from_u8(&content);
+    // Note: "content" is moved to encode() to be dropped early
+    let body = encode(content, mtype, opts.text)?;
+    log::info!("MIME type: {}", mtype);
+    let encoding = if opts.text && mtype.starts_with("text/") { "" } else { "base64" };
+    print!("data:{};{},{}", mtype, encoding, body);
+    Ok(())
+}