diff --git a/README.md b/README.md
index 3ed79bf..4c2748b 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,8 @@ Project or files:
│ ├── err_derive
│ ├── quick_error
│ └── thiserror_anyhow
+├── __external
+│ └── vcard-qr
├── __ffi
│ ├── abi_stable_crates
│ ├── c
@@ -253,6 +255,6 @@ Project or files:
├── vec.rs
└── while.rs
-222 directories, 38 files
+224 directories, 38 files
```
diff --git a/__external/vcard-qr/.gitignore b/__external/vcard-qr/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/__external/vcard-qr/.gitignore
@@ -0,0 +1 @@
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diff --git a/__external/vcard-qr/Cargo.lock b/__external/vcard-qr/Cargo.lock
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index 0000000..d268273
--- /dev/null
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+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
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+free software which everyone can redistribute and change under these terms.
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+ it under the terms of the GNU General Public License as published by
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+ (at your option) any later version.
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+ This is free software, and you are welcome to redistribute it
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
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+Public License instead of this License. But first, please read
+.
diff --git a/__external/vcard-qr/README.md b/__external/vcard-qr/README.md
new file mode 100644
index 0000000..8526b18
--- /dev/null
+++ b/__external/vcard-qr/README.md
@@ -0,0 +1,33 @@
+# vcard-qr
+Generate basic VCard QR codes from your terminal. Stick them on your things so people can contact you if they get lost!
+
+This little program is only vaguely serious; I wrote it after hearing about Tile's [lost and found labels](https://www.tile.com/product/lost-and-found-labels) product, which will run you *$15* for... some QR codes pointing to a web page with your information on it. Now, I'm not exactly sure what the total cost of a mass-produced sticker sheet and a few kilobytes of database storage is, but I'm going to make an educated guess and say its somewhere in the ballpark of a few pennies.
+
+"What a ripoff!" I thought. "And, come to think of it, can't QR codes contain VCards...?"
+
+And thus `vcard-qr` was born.
+
+## Features
+- Interactively generate VCard QR codes.
+- Free and open source.
+- Works offline forever.
+
+Or, expressed in a way my fellow Zoomers will have an easier time understanding:
+
+
+
+## Usage
+Just invoke `cargo run` or `vcard-qr` and answer the interactive prompts. Most information is optional; in accordance with the VCard spec, technically only a name is required, but you probably want to specify at least an email or a phone number. If you want, you can also specify:
+
+- A website.
+- An address or addresses.
+- A custom note.
+
+Once you've been thoroughly prompted, the program will render your VCard to the disk. By default it's formatted as a 1024x1024 PNG, but this is configurable - see below.
+
+## Configuration
+There are a few arguments you can change from the default to tweak the final output:
+- `-o`/`--output-name` - the name of the output file, sans extension. Defaults to `vcard`.
+- `-f`/`--format` - the output format of the QR code, either `png` or `svg`. Defaults to `png`.
+- `-e`/`--error-correction` - how much error correction should be baked into the QR code - `low`, `medium`, `high`, or `max`. Higher EC levels will generate larger QR codes, but can increase the chance that the code will remain readable if it's damaged. Defaults to `low`.
+- `-s`/`--size` - The height and width of the output image, in pixels. Defaults to 1024.
diff --git a/__external/vcard-qr/src/cli.rs b/__external/vcard-qr/src/cli.rs
new file mode 100644
index 0000000..0587993
--- /dev/null
+++ b/__external/vcard-qr/src/cli.rs
@@ -0,0 +1,47 @@
+use clap::{Parser, ValueEnum};
+use qrcode_generator::QrCodeEcc;
+
+#[derive(Parser)]
+#[command(author, version, about, long_about = None)]
+pub struct Cli {
+ /// The desired name of the output file, sans extension.
+ #[arg(short, long, default_value = "vcard")]
+ pub output_name: String,
+ /// The desired output format of the QR code.
+ #[arg(short, long, value_enum, default_value_t=OutputFormat::Png)]
+ pub format: OutputFormat,
+ /// The desired error correction level.
+ /// Higher levels generate larger QR codes, but make it more likely
+ /// the code will remain readable if it is damaged.
+ #[arg(short, long, value_enum, default_value_t=ErrorCorrection::Low)]
+ pub error_correction: ErrorCorrection,
+ /// The size of the output image, in pixels.
+ #[arg(short, long, default_value = "1024")]
+ pub size: usize,
+}
+
+#[derive(Debug, Clone, ValueEnum)]
+pub enum ErrorCorrection {
+ Low,
+ Medium,
+ High,
+ Max,
+}
+
+#[allow(clippy::from_over_into)]
+impl Into for ErrorCorrection {
+ fn into(self) -> QrCodeEcc {
+ match self {
+ ErrorCorrection::Low => QrCodeEcc::Low,
+ ErrorCorrection::Medium => QrCodeEcc::Medium,
+ ErrorCorrection::High => QrCodeEcc::Quartile,
+ ErrorCorrection::Max => QrCodeEcc::High,
+ }
+ }
+}
+
+#[derive(Debug, Clone, ValueEnum)]
+pub enum OutputFormat {
+ Png,
+ Svg,
+}
\ No newline at end of file
diff --git a/__external/vcard-qr/src/main.rs b/__external/vcard-qr/src/main.rs
new file mode 100644
index 0000000..26bdd69
--- /dev/null
+++ b/__external/vcard-qr/src/main.rs
@@ -0,0 +1,142 @@
+#![warn(clippy::perf, clippy::style, warnings)]
+
+mod cli;
+mod vcard;
+
+use crate::cli::*;
+use crate::vcard::VCard;
+use anyhow::Result;
+use clap::Parser;
+use dialoguer::{Confirm, Editor, Input};
+
+const FORMATTED_NAME: &str = "FN";
+const EMAIL: &str = "EMAIL";
+const TELEPHONE: &str = "TEL";
+const ADDRESS: &str = "ADR";
+const WEBSITE: &str = "URL";
+const NOTE: &str = "NOTE";
+
+fn main() -> Result<()> {
+ let cli = Cli::parse();
+
+ println!(
+ "Building new VCard... [ Format: {:?} // ECC Level: {:?} // Size: {}px ]\n",
+ &cli.format, &cli.error_correction, &cli.size
+ );
+
+ let vcard = build_vcard()?;
+ write_vcard(vcard, cli)?;
+ Ok(())
+}
+
+fn build_vcard() -> Result {
+ let mut vcard = VCard::new();
+
+ let name = query_input("Your name (required)", false)?;
+ let email = query_input("Contact email (recommended)", true)?;
+ let phone = query_input("Contact phone (recommended)", true)?;
+ let website = query_input("Your website (optional)", true)?;
+
+ vcard.push(FORMATTED_NAME, name);
+ vcard.optional_push(EMAIL, email);
+ vcard.optional_push(TELEPHONE, phone);
+ vcard.optional_push(WEBSITE, website);
+
+ if query_bool("Do you want to add addresses?", false)? {
+ for address in query_addresses()? {
+ vcard.push_explicit(&address);
+ }
+ }
+
+ if query_bool("Do you want to add a note?", false)? {
+ if let Some(note) = Editor::new().edit("Enter your note...")? {
+ vcard.optional_push(NOTE, note)
+ } else {
+ println!("Skipped adding a note.")
+ }
+ }
+
+ Ok(vcard.finalize())
+}
+
+fn write_vcard(vcard: String, config: Cli) -> Result<()> {
+ use std::path::PathBuf;
+
+ let mut path = PathBuf::from(config.output_name);
+
+ match config.format {
+ OutputFormat::Png => {
+ path.set_extension("png");
+ qrcode_generator::to_png_to_file(
+ vcard,
+ config.error_correction.into(),
+ config.size,
+ &path,
+ )?
+ }
+ OutputFormat::Svg => {
+ path.set_extension("svg");
+ qrcode_generator::to_svg_to_file(
+ vcard,
+ config.error_correction.into(),
+ config.size,
+ None::<&str>,
+ &path,
+ )?
+ }
+ }
+
+ println!("Output written to \"{}\".", path.to_string_lossy());
+ Ok(())
+}
+
+/// Convenience function that wraps [`dialoguer::Input`] for prompting a string from the user.
+fn query_input(prompt: &str, optional: bool) -> Result {
+ Input::new()
+ .with_prompt(prompt)
+ .allow_empty(optional)
+ .interact_text()
+}
+
+/// Convenience function that wraps [`dialoguer::Confirm`] for prompting a y/n decision from the user.
+fn query_bool(prompt: &str, default: bool) -> Result {
+ Confirm::new()
+ .with_prompt(prompt)
+ .default(default)
+ .interact()
+}
+
+/// Collects an arbitrary number of addresses from the user, in a loop.
+fn query_addresses() -> Result> {
+ let mut addresses: Vec = Vec::new();
+
+ loop {
+ let street_addr = query_input("Street address (required)", false)?;
+ let extended_addr =
+ query_input("Extended address (e.g. apartment number, optional)", true)?;
+ let city = query_input("Municipality (required)", false)?;
+ let state = query_input("State/province (required)", false)?;
+ let zip = query_input("ZIP/postal code (required)", false)?;
+ let country = query_input("Country (optional)", true)?;
+ let addr_type = query_input("Address type (e.g. home, optional)", true)?;
+
+ let street_addr = format!("{street_addr},{extended_addr}");
+
+ let property = match addr_type.is_empty() {
+ false => format!("{ADDRESS};TYPE={addr_type}"),
+ true => ADDRESS.to_string(),
+ };
+
+ addresses.push(format!(
+ "{property}:;;{street_addr};{city};{state};{zip};{country}"
+ ));
+
+ if query_bool("Do you want to add another address?", false)? {
+ continue;
+ }
+
+ break;
+ }
+
+ Ok(addresses)
+}
diff --git a/__external/vcard-qr/src/vcard.rs b/__external/vcard-qr/src/vcard.rs
new file mode 100644
index 0000000..0c11773
--- /dev/null
+++ b/__external/vcard-qr/src/vcard.rs
@@ -0,0 +1,45 @@
+const VCARD_HEADER: &str = "BEGIN:VCARD\nVERSION:4.0\n";
+const VCARD_FOOTER: &str = "END:VCARD";
+
+pub struct VCard {
+ buf: String,
+}
+
+impl VCard {
+ pub fn new() -> Self {
+ VCard {
+ buf: VCARD_HEADER.into(),
+ }
+ }
+
+ pub fn push(&mut self, property: P, value: V)
+ where
+ P: AsRef,
+ V: AsRef,
+ {
+ self.buf
+ .push_str(&format!("{}:{}\n", property.as_ref(), value.as_ref()))
+ }
+
+ pub fn optional_push(&mut self, property: P, value: V)
+ where
+ P: AsRef,
+ V: AsRef,
+ {
+ if !value.as_ref().is_empty() {
+ self.push(property, value)
+ }
+ }
+
+ pub fn push_explicit(&mut self, data: T)
+ where
+ T: AsRef,
+ {
+ self.buf.push_str(&format!("{}\n", data.as_ref()))
+ }
+
+ pub fn finalize(mut self) -> String {
+ self.push_explicit(VCARD_FOOTER);
+ self.buf.trim().to_owned()
+ }
+}
diff --git a/__external/vcard-qr/vcard.png b/__external/vcard-qr/vcard.png
new file mode 100644
index 0000000..fbb025d
Binary files /dev/null and b/__external/vcard-qr/vcard.png differ