mirror of
https://github.com/ipxe/ipxe
synced 2025-12-26 09:32:33 +03:00
[linebuf] Support buffering of multiple lines
Allow line buffer to accumulate multiple lines, with buffered_line() returning each freshly-completed line as it is encountered. This allows buffered lines to be subsequently processed as a group. Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
@@ -1,35 +1,320 @@
|
||||
#include <stdint.h>
|
||||
/*
|
||||
* Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 of the
|
||||
* License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
* 02110-1301, USA.
|
||||
*
|
||||
* You can also choose to distribute this program under the terms of
|
||||
* the Unmodified Binary Distribution Licence (as given in the file
|
||||
* COPYING.UBDL), provided that you have satisfied its requirements.
|
||||
*/
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
/** @file
|
||||
*
|
||||
* Line buffer self-tests
|
||||
*
|
||||
*/
|
||||
|
||||
/* Forcibly enable assertions */
|
||||
#undef NDEBUG
|
||||
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <assert.h>
|
||||
#include <ipxe/linebuf.h>
|
||||
#include <ipxe/test.h>
|
||||
|
||||
static const char data1[] =
|
||||
"Hello world\r\n"
|
||||
"This is a reasonably nice set of lines\n"
|
||||
"with not many different terminators\r\n\r\n"
|
||||
"There should be exactly one blank line above\n"
|
||||
"and this line should never appear at all since it has no terminator";
|
||||
/** Define inline raw data */
|
||||
#define DATA(...) { __VA_ARGS__ }
|
||||
|
||||
void linebuf_test ( void ) {
|
||||
struct line_buffer linebuf;
|
||||
const char *data = data1;
|
||||
size_t len = ( sizeof ( data1 ) - 1 /* be mean; strip the NUL */ );
|
||||
ssize_t frag_len;
|
||||
char *line;
|
||||
/** Define inline lines */
|
||||
#define LINES(...) { __VA_ARGS__ }
|
||||
|
||||
memset ( &linebuf, 0, sizeof ( linebuf ) );
|
||||
while ( len ) {
|
||||
frag_len = line_buffer ( &linebuf, data, len );
|
||||
if ( frag_len < 0 ) {
|
||||
printf ( "line_buffer() failed: %s\n",
|
||||
strerror ( frag_len ) );
|
||||
return;
|
||||
}
|
||||
data += frag_len;
|
||||
len -= frag_len;
|
||||
if ( ( line = buffered_line ( &linebuf ) ) )
|
||||
printf ( "\"%s\"\n", line );
|
||||
/** A line buffer test */
|
||||
struct linebuf_test {
|
||||
/** Raw data */
|
||||
const void *data;
|
||||
/** Length of raw data */
|
||||
size_t len;
|
||||
/** Expected sequence of lines */
|
||||
const char **lines;
|
||||
/** Number of expected lines */
|
||||
unsigned int count;
|
||||
};
|
||||
|
||||
/** Line buffer test expected failure indicator */
|
||||
static const char linebuf_failure[1];
|
||||
|
||||
/**
|
||||
* Define a line buffer test
|
||||
*
|
||||
* @v name Test name
|
||||
* @v DATA Raw data
|
||||
* @v LINES Expected sequence of lines
|
||||
* @ret test Line buffer test
|
||||
*/
|
||||
#define LINEBUF_TEST( name, DATA, LINES ) \
|
||||
static const char name ## _data[] = DATA; \
|
||||
static const char * name ## _lines[] = LINES; \
|
||||
static struct linebuf_test name = { \
|
||||
.data = name ## _data, \
|
||||
.len = ( sizeof ( name ## _data ) - 1 /* NUL */ ), \
|
||||
.lines = name ## _lines, \
|
||||
.count = ( sizeof ( name ## _lines ) / \
|
||||
sizeof ( name ## _lines[0] ) ), \
|
||||
}
|
||||
|
||||
empty_line_buffer ( &linebuf );
|
||||
/** Simple line buffer test */
|
||||
LINEBUF_TEST ( simple,
|
||||
( "HTTP/1.1 200 OK\r\n"
|
||||
"Content-Length: 123\r\n"
|
||||
"Content-Type: text/plain\r\n"
|
||||
"\r\n" ),
|
||||
LINES ( "HTTP/1.1 200 OK",
|
||||
"Content-Length: 123",
|
||||
"Content-Type: text/plain",
|
||||
"" ) );
|
||||
|
||||
/** Mixed line terminators */
|
||||
LINEBUF_TEST ( mixed,
|
||||
( "LF only\n" "CRLF\r\n" "\n" "\n" "\r\n" "\r\n" "CR only\r" ),
|
||||
LINES ( "LF only", "CRLF", "", "", "", "",
|
||||
NULL /* \r should not be treated as a terminator */ ) );
|
||||
|
||||
/** Split consumption: part 1 */
|
||||
LINEBUF_TEST ( split_1,
|
||||
( "This line was" ),
|
||||
LINES ( NULL ) );
|
||||
|
||||
/** Split consumption: part 2 */
|
||||
LINEBUF_TEST ( split_2,
|
||||
( " split across" ),
|
||||
LINES ( NULL ) );
|
||||
|
||||
/** Split consumption: part 3 */
|
||||
LINEBUF_TEST ( split_3,
|
||||
( " multiple calls\r\nand so was this one\r" ),
|
||||
LINES ( "This line was split across multiple calls", NULL ) );
|
||||
|
||||
/** Split consumption: part 4 */
|
||||
LINEBUF_TEST ( split_4,
|
||||
( "\nbut not this one\r\n" ),
|
||||
LINES ( "and so was this one", "but not this one" ) );
|
||||
|
||||
/** Split consumption: part 5 */
|
||||
LINEBUF_TEST ( split_5,
|
||||
( "" ),
|
||||
LINES ( NULL ) );
|
||||
|
||||
/** Split consumption: part 6 */
|
||||
LINEBUF_TEST ( split_6,
|
||||
( "This line came after a zero-length call\r\n" ),
|
||||
LINES ( "This line came after a zero-length call" ) );
|
||||
|
||||
/** Embedded NULs */
|
||||
LINEBUF_TEST ( embedded_nuls,
|
||||
( "This\r\ntest\r\nincludes\r\n\r\nsome\0binary\0data\r\n" ),
|
||||
LINES ( "This", "test", "includes", "", linebuf_failure ) );
|
||||
|
||||
/**
|
||||
* Report line buffer initialisation test result
|
||||
*
|
||||
* @v linebuf Line buffer
|
||||
* @v file Test code file
|
||||
* @v line Test code line
|
||||
*/
|
||||
static void linebuf_init_okx ( struct line_buffer *linebuf,
|
||||
const char *file, unsigned int line ) {
|
||||
|
||||
/* Initialise line buffer */
|
||||
memset ( linebuf, 0, sizeof ( *linebuf ) );
|
||||
okx ( buffered_line ( linebuf ) == NULL, file, line );
|
||||
}
|
||||
#define linebuf_init_ok( linebuf ) \
|
||||
linebuf_init_okx ( linebuf, __FILE__, __LINE__ )
|
||||
|
||||
/**
|
||||
* Report line buffer consumption test result
|
||||
*
|
||||
* @v test Line buffer test
|
||||
* @v linebuf Line buffer
|
||||
* @v file Test code file
|
||||
* @v line Test code line
|
||||
*/
|
||||
static void linebuf_consume_okx ( struct linebuf_test *test,
|
||||
struct line_buffer *linebuf,
|
||||
const char *file, unsigned int line ) {
|
||||
const char *data = test->data;
|
||||
size_t remaining = test->len;
|
||||
int len;
|
||||
unsigned int i;
|
||||
const char *expected;
|
||||
char *actual;
|
||||
int rc;
|
||||
|
||||
DBGC ( test, "LINEBUF %p:\n", test );
|
||||
DBGC_HDA ( test, 0, data, remaining );
|
||||
|
||||
/* Consume data one line at a time */
|
||||
for ( i = 0 ; i < test->count ; i++ ) {
|
||||
|
||||
/* Add data to line buffer */
|
||||
len = line_buffer ( linebuf, data, remaining );
|
||||
|
||||
/* Get buffered line, if any */
|
||||
actual = buffered_line ( linebuf );
|
||||
if ( len < 0 ) {
|
||||
rc = len;
|
||||
DBGC ( test, "LINEBUF %p %s\n", test, strerror ( rc ) );
|
||||
} else if ( actual != NULL ) {
|
||||
DBGC ( test, "LINEBUF %p \"%s\" (consumed %d)\n",
|
||||
test, actual, len );
|
||||
} else {
|
||||
DBGC ( test, "LINEBUF %p unterminated (consumed %d)\n",
|
||||
test, len );
|
||||
}
|
||||
|
||||
/* Check for success/failure */
|
||||
expected = test->lines[i];
|
||||
if ( expected == linebuf_failure ) {
|
||||
rc = len;
|
||||
okx ( rc < 0, file, line );
|
||||
okx ( remaining > 0, file, line );
|
||||
return;
|
||||
}
|
||||
okx ( len >= 0, file, line );
|
||||
okx ( ( ( size_t ) len ) <= remaining, file, line );
|
||||
|
||||
/* Check expected result */
|
||||
if ( expected == NULL ) {
|
||||
okx ( actual == NULL, file, line );
|
||||
} else {
|
||||
okx ( actual != NULL, file, line );
|
||||
okx ( strcmp ( actual, expected ) == 0, file, line );
|
||||
}
|
||||
|
||||
/* Consume data */
|
||||
data += len;
|
||||
remaining -= len;
|
||||
}
|
||||
|
||||
/* Check that all data was consumed */
|
||||
okx ( remaining == 0, file, line );
|
||||
}
|
||||
#define linebuf_consume_ok( test, linebuf ) \
|
||||
linebuf_consume_okx ( test, linebuf, __FILE__, __LINE__ )
|
||||
|
||||
/**
|
||||
* Report line buffer accumulation test result
|
||||
*
|
||||
* @v test Line buffer test
|
||||
* @v linebuf Line buffer
|
||||
* @v file Test code file
|
||||
* @v line Test code line
|
||||
*/
|
||||
static void linebuf_accumulated_okx ( struct linebuf_test *test,
|
||||
struct line_buffer *linebuf,
|
||||
const char *file, unsigned int line ) {
|
||||
const char *actual;
|
||||
const char *expected;
|
||||
unsigned int i;
|
||||
|
||||
/* Check each accumulated line */
|
||||
actual = linebuf->data;
|
||||
for ( i = 0 ; i < test->count ; i++ ) {
|
||||
|
||||
/* Check accumulated line */
|
||||
okx ( actual != NULL, file, line );
|
||||
okx ( actual >= linebuf->data, file, line );
|
||||
expected = test->lines[i];
|
||||
if ( ( expected == NULL ) || ( expected == linebuf_failure ) )
|
||||
return;
|
||||
okx ( strcmp ( actual, expected ) == 0, file, line );
|
||||
|
||||
/* Move to next line */
|
||||
actual += ( strlen ( actual ) + 1 /* NUL */ );
|
||||
okx ( actual <= ( linebuf->data + linebuf->len ), file, line );
|
||||
}
|
||||
}
|
||||
#define linebuf_accumulated_ok( test, linebuf ) \
|
||||
linebuf_accumulated_okx ( test, linebuf, __FILE__, __LINE__ )
|
||||
|
||||
/**
|
||||
* Report line buffer emptying test result
|
||||
*
|
||||
* @v linebuf Line buffer
|
||||
* @v file Test code file
|
||||
* @v line Test code line
|
||||
*/
|
||||
static void linebuf_empty_okx ( struct line_buffer *linebuf,
|
||||
const char *file, unsigned int line ) {
|
||||
|
||||
/* Empty line buffer */
|
||||
empty_line_buffer ( linebuf );
|
||||
okx ( buffered_line ( linebuf ) == NULL, file, line );
|
||||
}
|
||||
#define linebuf_empty_ok( linebuf ) \
|
||||
linebuf_empty_okx ( linebuf, __FILE__, __LINE__ )
|
||||
|
||||
/**
|
||||
* Report line buffer combined test result
|
||||
*
|
||||
* @v test Line buffer test
|
||||
* @v file Test code file
|
||||
* @v line Test code line
|
||||
*/
|
||||
static void linebuf_okx ( struct linebuf_test *test, const char *file,
|
||||
unsigned int line ) {
|
||||
struct line_buffer linebuf;
|
||||
|
||||
linebuf_init_okx ( &linebuf, file, line );
|
||||
linebuf_consume_okx ( test, &linebuf, file, line );
|
||||
linebuf_accumulated_okx ( test, &linebuf, file, line );
|
||||
linebuf_empty_okx ( &linebuf, file, line );
|
||||
}
|
||||
#define linebuf_ok( test ) \
|
||||
linebuf_okx ( test, __FILE__, __LINE__ )
|
||||
|
||||
/**
|
||||
* Perform line buffer self-tests
|
||||
*
|
||||
*/
|
||||
static void linebuf_test_exec ( void ) {
|
||||
struct line_buffer linebuf;
|
||||
|
||||
/* Basic tests */
|
||||
linebuf_ok ( &simple );
|
||||
linebuf_ok ( &mixed );
|
||||
|
||||
/* Split consumption test */
|
||||
linebuf_init_ok ( &linebuf );
|
||||
linebuf_consume_ok ( &split_1, &linebuf );
|
||||
linebuf_consume_ok ( &split_2, &linebuf );
|
||||
linebuf_consume_ok ( &split_3, &linebuf );
|
||||
linebuf_consume_ok ( &split_4, &linebuf );
|
||||
linebuf_consume_ok ( &split_5, &linebuf );
|
||||
linebuf_consume_ok ( &split_6, &linebuf );
|
||||
linebuf_empty_ok ( &linebuf );
|
||||
|
||||
/* Embedded NULs */
|
||||
linebuf_ok ( &embedded_nuls );
|
||||
}
|
||||
|
||||
/** Line buffer self-test */
|
||||
struct self_test linebuf_test __self_test = {
|
||||
.name = "linebuf",
|
||||
.exec = linebuf_test_exec,
|
||||
};
|
||||
|
||||
@@ -66,3 +66,4 @@ REQUIRE_OBJECT ( uri_test );
|
||||
REQUIRE_OBJECT ( profile_test );
|
||||
REQUIRE_OBJECT ( setjmp_test );
|
||||
REQUIRE_OBJECT ( pccrc_test );
|
||||
REQUIRE_OBJECT ( linebuf_test );
|
||||
|
||||
Reference in New Issue
Block a user