Module: Rack::Utils::Multipart
- Defined in:
- lib/gems/rack-0.4.0/lib/rack/utils.rb
Overview
A multipart form data parser, adapted from IOWA.
Usually, Rack::Request#POST takes care of calling this.
Constant Summary collapse
- EOL =
"\r\n"
Class Method Summary collapse
Class Method Details
.parse_multipart(env) ⇒ Object
230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 |
# File 'lib/gems/rack-0.4.0/lib/rack/utils.rb', line 230 def self.parse_multipart(env) unless env['CONTENT_TYPE'] =~ %r|\Amultipart/form-data.*boundary=\"?([^\";,]+)\"?|n nil else boundary = "--#{$1}" params = {} buf = "" content_length = env['CONTENT_LENGTH'].to_i input = env['rack.input'] boundary_size = boundary.size + EOL.size bufsize = 16384 content_length -= boundary_size status = input.read(boundary_size) raise EOFError, "bad content body" unless status == boundary + EOL rx = /(?:#{EOL})?#{Regexp.quote boundary}(#{EOL}|--)/ loop { head = nil body = '' filename = content_type = name = nil until head && buf =~ rx if !head && i = buf.index("\r\n\r\n") head = buf.slice!(0, i+2) # First \r\n buf.slice!(0, 2) # Second \r\n filename = head[/Content-Disposition:.* filename="?([^\";]*)"?/ni, 1] content_type = head[/Content-Type: (.*)\r\n/ni, 1] name = head[/Content-Disposition:.* name="?([^\";]*)"?/ni, 1] if filename body = Tempfile.new("RackMultipart") body.binmode if body.respond_to?(:binmode) end next end # Save the read body part. if head && (boundary_size+4 < buf.size) body << buf.slice!(0, buf.size - (boundary_size+4)) end c = input.read(bufsize < content_length ? bufsize : content_length) raise EOFError, "bad content body" if c.nil? || c.empty? buf << c content_length -= c.size end # Save the rest. if i = buf.index(rx) body << buf.slice!(0, i) buf.slice!(0, boundary_size+2) content_length = -1 if $1 == "--" end if filename body.rewind data = {:filename => filename, :type => content_type, :name => name, :tempfile => body, :head => head} else data = body end if name if name =~ /\[\]\z/ params[name] ||= [] params[name] << data else params[name] = data end end break if buf.empty? || content_length == -1 } params end end |