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| | package org.jruby.mongrel;
import org.jruby.util.ByteList;
public class Http11Parser {
/** Machine **/
%%{
machine http_parser;
action mark {parser.mark = fpc; }
action start_field { parser.field_start = fpc; }
action snake_upcase_field { /* FIXME stub */ }
action write_field {
parser.field_len = fpc-parser.field_start;
}
action start_value { parser.mark = fpc; }
action write_value {
if(parser.http_field != null) {
parser.http_field.call(parser.data, parser.field_start, parser.field_len, parser.mark, fpc-parser.mark);
}
}
action request_method {
if(parser.request_method != null)
parser.request_method.call(parser.data, parser.mark, fpc-parser.mark);
}
action request_uri {
if(parser.request_uri != null)
parser.request_uri.call(parser.data, parser.mark, fpc-parser.mark);
}
action fragment {
if(parser.fragment != null)
parser.fragment.call(parser.data, parser.mark, fpc-parser.mark);
}
action start_query {parser.query_start = fpc; }
action query_string {
if(parser.query_string != null)
parser.query_string.call(parser.data, parser.query_start, fpc-parser.query_start);
}
action http_version {
if(parser.http_version != null)
parser.http_version.call(parser.data, parser.mark, fpc-parser.mark);
}
action request_path {
if(parser.request_path != null)
parser.request_path.call(parser.data, parser.mark, fpc-parser.mark);
}
action done {
parser.body_start = fpc + 1;
if(parser.header_done != null)
parser.header_done.call(parser.data, fpc + 1, pe - fpc - 1);
fbreak;
}
include http_parser_common "http11_parser_common.rl";
}%%
/** Data **/
%% write data;
public static interface ElementCB {
public void call(Object data, int at, int length);
}
public static interface FieldCB {
public void call(Object data, int field, int flen, int value, int vlen);
}
public static class HttpParser {
int cs;
int body_start;
int content_len;
int nread;
int mark;
int field_start;
int field_len;
int query_start;
Object data;
ByteList buffer;
public FieldCB http_field;
public ElementCB request_method;
public ElementCB request_uri;
public ElementCB fragment;
public ElementCB request_path;
public ElementCB query_string;
public ElementCB http_version;
public ElementCB header_done;
public void init() {
cs = 0;
%% write init;
body_start = 0;
content_len = 0;
mark = 0;
nread = 0;
field_len = 0;
field_start = 0;
}
}
public final HttpParser parser = new HttpParser();
public int execute(ByteList buffer, int off) {
int p, pe;
int cs = parser.cs;
int len = buffer.realSize;
assert off<=len : "offset past end of buffer";
p = off;
pe = len;
byte[] data = buffer.bytes;
parser.buffer = buffer;
%% write exec;
parser.cs = cs;
parser.nread += (p - off);
assert p <= pe : "buffer overflow after parsing execute";
assert parser.nread <= len : "nread longer than length";
assert parser.body_start <= len : "body starts after buffer end";
assert parser.mark < len : "mark is after buffer end";
assert parser.field_len <= len : "field has length longer than whole buffer";
assert parser.field_start < len : "field starts after buffer end";
if(parser.body_start>0) {
/* final \r\n combo encountered so stop right here */
%%write eof;
parser.nread++;
}
return parser.nread;
}
public int finish() {
int cs = parser.cs;
%%write eof;
parser.cs = cs;
if(has_error()) {
return -1;
} else if(is_finished()) {
return 1;
} else {
return 0;
}
}
public boolean has_error() {
return parser.cs == http_parser_error;
}
public boolean is_finished() {
return parser.cs == http_parser_first_final;
}
}
|