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<?php
/**
*
* Command line application
*
*/
require_once 'CssCrush.php';
// Exit status constants
define( 'STATUS_OK', 0 );
define( 'STATUS_ERROR', 1 );
// Open stream handles
$stdin = fopen( 'php://stdin', 'r' );
$stdout = fopen( 'php://stdout', 'w' );
$stderr = fopen( 'php://stderr', 'w' );
// Get stdin contents
if ( ! stream_set_blocking( $stdin, false ) ) {
stderr( 'Failed to disable stdin blocking' );
exit( STATUS_ERROR );
}
$stdin_contents = stream_get_contents( $stdin );
fclose( $stdin );
##################################################################
## Helpers
function stderr ( $lines, $closing_newline = true ) {
global $stderr;
fwrite( $stderr,
implode( PHP_EOL, (array) $lines ) . ( $closing_newline ? PHP_EOL : '' )
);
}
function stdout ( $lines, $closing_newline = true ) {
global $stdout;
fwrite( $stdout,
implode( PHP_EOL, (array) $lines ) . ( $closing_newline ? PHP_EOL : '' )
);
}
##################################################################
## Version detection
$version = PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION;
$required_version = 5.3;
if ( $version < $required_version ) {
stderr( array(
"PHP version $required_version or higher is required to use this tool.",
"You are currently running PHP version $version" )
);
exit( STATUS_ERROR );
}
##################################################################
## Options
$short_opts = array(
"f::", // Input file. Defaults to sdtin
"o::", // Output file. Defaults to stdout
"p", // Pretty formatting
'b', // Output boilerplate
'h', // Display help
);
$long_opts = array(
'file::', // Input file. Defaults to sdtin
'output::', // Output file. Defaults to stdout
'pretty', // Pretty formatting
'boilerplate', // Output boilerplate
'help', // Display help
'version', // Display version
'vendor-target:', // Vendor target
'variables:', // Map of variable names in an http query string format
);
$opts = getopt( implode( $short_opts ), $long_opts );
$input_file = @( $opts['f'] ?: $opts['file'] );
$output_file = @( $opts['o'] ?: $opts['output'] );
$variables = @$opts['variables'];
$vendor_target = @$opts['vendor-target'];
$boilerplate = @( isset( $opts['b'] ) ?: isset( $opts['boilerplate'] ) );
$pretty = @( isset( $opts['p'] ) ?: isset( $opts['pretty'] ) );
$help_flag = @( isset( $opts['h'] ) ?: isset( $opts['help'] ) );
$version_flag = @isset( $opts['version'] );
##################################################################
## Help page
$command = 'csscrush';
$help = <<<TPL
Usage:
csscrush [-f|--file] [-o|--output-file] [-p|--pretty] [-b|--boilerplate]
[-h|--help] [--variables] [--vendor-target] [--version]
Options:
-f, --file:
The input file, if omitted takes input from stdin
-o, --output:
The output file, if omitted prints to stdout
-p, --pretty:
Formatted, unminified output
-b, --boilerplate:
Whether or not to output a boilerplate
-h, --help:
Display this help mesasge
--variables:
Map of variable names in an http query string format
--vendor-target:
Set to 'all' for all vendor prefixes (default)
Set to 'none' for no vendor prefixes
Set to a specific vendor prefix
--version:
Version number
Examples:
$command -f=styles.css --pretty --vendor-target=webkit
# Piping on unix based terminals
cat 'styles.css' | $command --boilerplate
TPL;
if ( $version_flag ) {
stdout( 'CSS Crush ' . csscrush::$config->version );
exit( STATUS_OK );
}
if ( $help_flag ) {
stdout( $help );
exit( STATUS_OK );
}
##################################################################
## Input
$input = null;
if ( $input_file ) {
if ( ! file_exists( $input_file ) ) {
stdout( 'Input file not found' . PHP_EOL );
exit( STATUS_ERROR );
}
$input = file_get_contents( $input_file );
}
elseif ( $stdin_contents ) {
$input = $stdin_contents;
}
else {
// No input, just output help screen
stdout( $help );
exit( STATUS_OK );
}
##################################################################
## Processing
$process_opts = array();
$process_opts[ 'boilerplate' ] = $boilerplate ? true : false;
$process_opts[ 'debug' ] = $pretty ? true : false;
$process_opts[ 'rewrite_import_urls' ] = true;
if ( $vendor_target ) {
$process_opts[ 'vendor_target' ] = $vendor_target;
}
if ( $variables ) {
parse_str( $variables, $in_vars );
$process_opts[ 'vars' ] = $in_vars;
}
$import_context = $input_file ? dirname( realpath( $input_file ) ) : null;
// If there is an import context set it to the document root
if ( $import_context ) {
$old_doc_root = csscrush::$config->docRoot;
csscrush::$config->docRoot = $import_context;
$process_opts[ 'import_context' ] = $import_context;
}
// Process the stream
$output = csscrush::string( $input, $process_opts );
// Reset the document root after processing
if ( $import_context ) {
csscrush::$config->docRoot = $old_doc_root;
}
##################################################################
## Output
if ( $output_file ) {
if ( ! @file_put_contents( $output_file, $output ) ) {
$message[] = "Could not write to path '$output_file'";
if ( strpos( $output_file, '~' ) === 0 ) {
$message[] = 'Tilde expansion does not work here';
}
stderr( $message );
exit( STATUS_ERROR );
}
}
else {
if ( csscrush::$process->errors ) {
stderr( csscrush::$process->errors );
}
stdout( $output );
exit( STATUS_OK );
}
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