treewide: break into multiple crates

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: Ifabe7af523ece1354b301b1a321659ee6a6a6964

src/main.rs

@@ -1,108 +0,0 @@
-use std::io::{self, Cursor, Write};
-
-use microfetch_lib::{
-  UtsName,
-  colors::{COLORS, print_dots},
-  desktop::get_desktop_info,
-  release::{get_os_pretty_name, get_system_info},
-  syscall::sys_write,
-  system::{
-    get_memory_usage,
-    get_root_disk_usage,
-    get_shell,
-    get_username_and_hostname,
-  },
-  uptime::get_current,
-};
-
-#[cfg_attr(feature = "hotpath", hotpath::main)]
-fn main() -> Result<(), Box<dyn std::error::Error>> {
-  if Some("--version") == std::env::args().nth(1).as_deref() {
-    println!("Microfetch {}", env!("CARGO_PKG_VERSION"));
-  } else {
-    let utsname = UtsName::uname()?;
-    let fields = Fields {
-      user_info:      get_username_and_hostname(&utsname),
-      os_name:        get_os_pretty_name()?,
-      kernel_version: get_system_info(&utsname),
-      shell:          get_shell(),
-      desktop:        get_desktop_info(),
-      uptime:         get_current()?,
-      memory_usage:   get_memory_usage()?,
-      storage:        get_root_disk_usage()?,
-      colors:         print_dots(),
-    };
-    print_system_info(&fields)?;
-  }
-
-  Ok(())
-}
-
-// Struct to hold all the fields we need in order to print the fetch. This
-// helps avoid Clippy warnings about argument count, and makes it slightly
-// easier to pass data around. Though, it is not like we really need to.
-struct Fields {
-  user_info:      String,
-  os_name:        String,
-  kernel_version: String,
-  shell:          String,
-  uptime:         String,
-  desktop:        String,
-  memory_usage:   String,
-  storage:        String,
-  colors:         String,
-}
-
-#[cfg_attr(feature = "hotpath", hotpath::measure)]
-fn print_system_info(
-  fields: &Fields,
-) -> Result<(), Box<dyn std::error::Error>> {
-  let Fields {
-    user_info,
-    os_name,
-    kernel_version,
-    shell,
-    uptime,
-    desktop,
-    memory_usage,
-    storage,
-    colors,
-  } = fields;
-
-  let cyan = COLORS.cyan;
-  let blue = COLORS.blue;
-  let reset = COLORS.reset;
-
-  let mut buf = [0u8; 2048];
-  let mut cursor = Cursor::new(&mut buf[..]);
-
-  write!(
-    cursor,
-    "
-    {blue}     ▟█▖    {cyan}▝█▙ ▗█▛         {user_info} ~{reset}
-    {blue}  ▗▄▄▟██▄▄▄▄▄{cyan}▝█▙█▛  {blue}▖       {cyan}  {blue}System{reset}        {os_name}
-    {blue}  ▀▀▀▀▀▀▀▀▀▀▀▘{cyan}▝██  {blue}▟█▖      {cyan}  {blue}Kernel{reset}        {kernel_version}
-    {cyan}     ▟█▛       {cyan}▝█▘{blue}▟█▛       {cyan}  {blue}Shell{reset}         {shell}
-    {cyan}▟█████▛          {blue}▟█████▛    {cyan}  {blue}Uptime{reset}        {uptime}
-    {cyan}   ▟█▛{blue}▗█▖       {blue}▟█▛         {cyan}  {blue}Desktop{reset}       {desktop}
-    {cyan}  ▝█▛  {blue}██▖{cyan}▗▄▄▄▄▄▄▄▄▄▄▄      {cyan}󰍛  {blue}Memory{reset}        {memory_usage}
-    {cyan}   ▝  {blue}▟█▜█▖{cyan}▀▀▀▀▀██▛▀▀▘      {cyan}󱥎  {blue}Storage (/){reset}   {storage}
-    {blue}     ▟█▘ ▜█▖    {cyan}▝█▛         {cyan}  {blue}Colors{reset}        {colors}\n\n"
-  )?;
-
-  let len =
-    usize::try_from(cursor.position()).expect("cursor position fits usize");
-  // Direct syscall to avoid stdout buffering allocation
-  let written = unsafe { sys_write(1, buf.as_ptr(), len) };
-  if written < 0 {
-    return Err(io::Error::last_os_error().into());
-  }
-  #[allow(clippy::cast_sign_loss)] // non-negative verified by the guard above
-  if written as usize != len {
-    return Err(
-      io::Error::new(io::ErrorKind::WriteZero, "partial write to stdout")
-        .into(),
-    );
-  }
-  Ok(())
-}