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extern crate byteorder;
extern crate crossbeam_channel as channel;
extern crate csv;
extern crate csv_index;
extern crate docopt;
extern crate filetime;
extern crate num_cpus;
extern crate rand;
extern crate regex;
extern crate serde;
#[macro_use]
extern crate serde_derive;
extern crate stats;
extern crate tabwriter;
extern crate threadpool;
use std::borrow::ToOwned;
use std::env;
use std::fmt;
use std::io;
use std::process;
use docopt::Docopt;
macro_rules! wout {
($($arg:tt)*) => ({
use std::io::Write;
(writeln!(&mut ::std::io::stdout(), $($arg)*)).unwrap();
});
}
macro_rules! werr {
($($arg:tt)*) => ({
use std::io::Write;
(writeln!(&mut ::std::io::stderr(), $($arg)*)).unwrap();
});
}
macro_rules! fail {
($e:expr) => (Err(::std::convert::From::from($e)));
}
macro_rules! command_list {
() => (
"
cat Concatenate by row or column
count Count records
fixlengths Makes all records have same length
flatten Show one field per line
fmt Format CSV output (change field delimiter)
frequency Show frequency tables
headers Show header names
help Show this usage message.
index Create CSV index for faster access
input Read CSV data with special quoting rules
join Join CSV files
partition Partition CSV data based on a column value
sample Randomly sample CSV data
reverse Reverse rows of CSV data
search Search CSV data with regexes
select Select columns from CSV
slice Slice records from CSV
sort Sort CSV data
split Split CSV data into many files
stats Compute basic statistics
table Align CSV data into columns
"
)
}
mod cmd;
mod config;
mod index;
mod select;
mod util;
static USAGE: &'static str = concat!("
Usage:
xsv <command> [<args>...]
xsv [options]
Options:
--list List all commands available.
-h, --help Display this message
<command> -h Display the command help message
--version Print version info and exit
Commands:", command_list!());
#[derive(Deserialize)]
struct Args {
arg_command: Option<Command>,
flag_list: bool,
}
fn main() {
let args: Args = Docopt::new(USAGE)
.and_then(|d| d.options_first(true)
.version(Some(util::version()))
.deserialize())
.unwrap_or_else(|e| e.exit());
if args.flag_list {
wout!(concat!("Installed commands:", command_list!()));
return;
}
match args.arg_command {
None => {
werr!(concat!(
"xsv is a suite of CSV command line utilities.
Please choose one of the following commands:",
command_list!()));
process::exit(0);
}
Some(cmd) => {
match cmd.run() {
Ok(()) => process::exit(0),
Err(CliError::Flag(err)) => err.exit(),
Err(CliError::Csv(err)) => {
werr!("{}", err);
process::exit(1);
}
Err(CliError::Io(ref err))
if err.kind() == io::ErrorKind::BrokenPipe => {
process::exit(0);
}
Err(CliError::Io(err)) => {
werr!("{}", err);
process::exit(1);
}
Err(CliError::Other(msg)) => {
werr!("{}", msg);
process::exit(1);
}
}
}
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "lowercase")]
enum Command {
Cat,
Count,
FixLengths,
Flatten,
Fmt,
Frequency,
Headers,
Help,
Index,
Input,
Join,
Partition,
Reverse,
Sample,
Search,
Select,
Slice,
Sort,
Split,
Stats,
Table,
}
impl Command {
fn run(self) -> CliResult<()> {
let argv: Vec<_> = env::args().map(|v| v.to_owned()).collect();
let argv: Vec<_> = argv.iter().map(|s| &**s).collect();
let argv = &*argv;
if !argv[1].chars().all(char::is_lowercase) {
return Err(CliError::Other(format!(
"xsv expects commands in lowercase. Did you mean '{}'?",
argv[1].to_lowercase()).to_string()));
}
match self {
Command::Cat => cmd::cat::run(argv),
Command::Count => cmd::count::run(argv),
Command::FixLengths => cmd::fixlengths::run(argv),
Command::Flatten => cmd::flatten::run(argv),
Command::Fmt => cmd::fmt::run(argv),
Command::Frequency => cmd::frequency::run(argv),
Command::Headers => cmd::headers::run(argv),
Command::Help => { wout!("{}", USAGE); Ok(()) }
Command::Index => cmd::index::run(argv),
Command::Input => cmd::input::run(argv),
Command::Join => cmd::join::run(argv),
Command::Partition => cmd::partition::run(argv),
Command::Reverse => cmd::reverse::run(argv),
Command::Sample => cmd::sample::run(argv),
Command::Search => cmd::search::run(argv),
Command::Select => cmd::select::run(argv),
Command::Slice => cmd::slice::run(argv),
Command::Sort => cmd::sort::run(argv),
Command::Split => cmd::split::run(argv),
Command::Stats => cmd::stats::run(argv),
Command::Table => cmd::table::run(argv),
}
}
}
pub type CliResult<T> = Result<T, CliError>;
#[derive(Debug)]
pub enum CliError {
Flag(docopt::Error),
Csv(csv::Error),
Io(io::Error),
Other(String),
}
impl fmt::Display for CliError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
CliError::Flag(ref e) => { e.fmt(f) }
CliError::Csv(ref e) => { e.fmt(f) }
CliError::Io(ref e) => { e.fmt(f) }
CliError::Other(ref s) => { f.write_str(&**s) }
}
}
}
impl From<docopt::Error> for CliError {
fn from(err: docopt::Error) -> CliError {
CliError::Flag(err)
}
}
impl From<csv::Error> for CliError {
fn from(err: csv::Error) -> CliError {
if !err.is_io_error() {
return CliError::Csv(err);
}
match err.into_kind() {
csv::ErrorKind::Io(v) => From::from(v),
_ => unreachable!(),
}
}
}
impl From<io::Error> for CliError {
fn from(err: io::Error) -> CliError {
CliError::Io(err)
}
}
impl From<String> for CliError {
fn from(err: String) -> CliError {
CliError::Other(err)
}
}
impl<'a> From<&'a str> for CliError {
fn from(err: &'a str) -> CliError {
CliError::Other(err.to_owned())
}
}
impl From<regex::Error> for CliError {
fn from(err: regex::Error) -> CliError {
CliError::Other(format!("{:?}", err))
}
}
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