csvcount

#!/usr/bin/env php
<?php

class CSVCount {

	const DEFAULT_LPAD = 1;

	public static function main($argc, $argv) {
		if($argc === 1 || $argv[1] === '-')
			self::stdin();
		elseif($argc === 2)
			self::oneArg($argv[1]);
		elseif($argc > 2)
			self::manyArgs(array_slice($argv, 1));
	}

	public static function stdin() {
		echo self::countRecords(STDIN) . "\n";
	}

	public static function oneArg($arg, $lpad=0) {
		$count = self::countRecords(fopen($arg, 'r'));
		printf("%{$lpad}s %s\n", $count, $arg);
		return $count;
	}

	public static function countRecords($fp) {
		for($count = 0; fgetcsv($fp); $count++);
		return $count;
	}

	public static function manyArgs($args) {
		$lpad = self::compute_lpad($args);
		for($i = $totalRecords = 0, $argc = count($args);
			$i < $argc;
			$totalRecords += self::oneArg($args[$i], $lpad), $i++);
		printf("%{$lpad}s total\n", $totalRecords);
	}

	public static function compute_lpad($args) {
		for($i = $totalSize = 0, $argc = count($args);
			$i < $argc;
			$totalSize += filesize($args[$i]), $i++);
		for($lpad = 1; $totalSize >= 10; $totalSize /= 10, $lpad++);
		return $lpad > self::DEFAULT_LPAD ? $lpad : self::DEFAULT_LPAD;
	}
}

CSVCount::main(count($argv), $argv);