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score: Add _IO_Base64()

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Update #3904.
This commit is contained in:
Sebastian Huber
2020-03-16 11:54:26 +01:00
parent 5662210311
commit a6b3633459
4 changed files with 165 additions and 1 deletions
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cpukit/Makefile.am
+1
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@@ -1011,6 +1011,7 @@ librtemscpu_a_SOURCES += score/src/isr.c
librtemscpu_a_SOURCES += score/src/wkspace.c
librtemscpu_a_SOURCES += score/src/wkspaceisunifieddefault.c
librtemscpu_a_SOURCES += score/src/wkstringduplicate.c
librtemscpu_a_SOURCES += score/src/iobase64.c
librtemscpu_a_SOURCES += score/src/ioprintf.c
librtemscpu_a_SOURCES += score/src/iovprintf.c
librtemscpu_a_SOURCES += score/src/isrisinprogress.c
cpukit/include/rtems/score/io.h
+26 -1
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@@ -23,7 +23,7 @@
extern "C" {
#endif /* __cplusplus */
typedef void ( *IO_Put_char )(int c, void *arg);
typedef void ( *IO_Put_char )( int c, void *arg );
int _IO_Printf(
IO_Put_char put_char,
@@ -39,6 +39,31 @@ int _IO_Vprintf(
va_list ap
);
/**
* @brief Outputs the source buffer in base64 encoding.
*
* After word length of output characters produced by the encoding a word break
* is produced.
*
* @param put_char The put character function.
* @param arg The argument passed to the put character function.
* @param src The pointer to the source buffer begin.
* @param srclen The length of the source buffer in bytes.
* @param wordbreak The word break string.
* @param wordlen The word length in bytes. If the word length is less than
* four, then a word length of four will be used.
*
* @return The count of output characters.
*/
int _IO_Base64(
IO_Put_char put_char,
void *arg,
const void *src,
size_t len,
const char *wordbreak,
int wordlen
);
#ifdef __cplusplus
}
#endif /* __cplusplus */
cpukit/score/src/iobase64.c
+82
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@@ -0,0 +1,82 @@
/* SPDX-License-Identifier: ISC */
/*
* Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
* Copyright (C) 2004, 2005, 2007, 2009 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1998-2001, 2003 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <rtems/score/io.h>
static const char base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
static void _IO_Put(int c, void *arg, IO_Put_char put_char)
{
(*put_char)(c, arg);
}
int
_IO_Base64(IO_Put_char put_char, void *arg, const void *src, size_t srclen,
const char *wordbreak, int wordlen)
{
unsigned int loops = 0;
const unsigned char *in = src;
int out = 0;
if (wordlen < 4) {
wordlen = 4;
}
while (srclen > 2) {
_IO_Put(base64[(in[0]>>2)&0x3f], arg, put_char);
_IO_Put(base64[((in[0]<<4)&0x30)|
((in[1]>>4)&0x0f)], arg, put_char);
_IO_Put(base64[((in[1]<<2)&0x3c)|
((in[2]>>6)&0x03)], arg, put_char);
_IO_Put(base64[in[2]&0x3f], arg, put_char);
in += 3;
srclen -= 3;
out += 4;
loops++;
if (srclen != 0 &&
(int)((loops + 1) * 4) >= wordlen)
{
const char *w = wordbreak;
loops = 0;
while (*w != '\0') {
_IO_Put(*w, arg, put_char);
++w;
++out;
}
}
}
if (srclen == 2) {
_IO_Put(base64[(in[0]>>2)&0x3f], arg, put_char);
_IO_Put(base64[((in[0]<<4)&0x30)|
((in[1]>>4)&0x0f)], arg, put_char);
_IO_Put(base64[((in[1]<<2)&0x3c)], arg, put_char);
_IO_Put('=', arg, put_char);
out += 4;
} else if (srclen == 1) {
_IO_Put(base64[(in[0]>>2)&0x3f], arg, put_char);
_IO_Put(base64[((in[0]<<4)&0x30)], arg, put_char);
_IO_Put('=', arg, put_char);
_IO_Put('=', arg, put_char);
out += 4;
}
return out;
}
testsuites/sptests/spprintk/init.c
+56
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@@ -187,6 +187,61 @@ static void test_io_printf( test_context *ctx )
rtems_test_assert( strcmp( ctx->buf, "161718" ) == 0 );
}
static void test_io_base64( test_context *ctx )
{
unsigned char buf[] = "abcdefghi";
int n;
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 9, "\n", 0 );
rtems_test_assert( n == 14 );
rtems_test_assert( strcmp( ctx->buf, "YWJj\nZGVm\nZ2hp" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 8, "\n", 4 );
rtems_test_assert( n == 14 );
rtems_test_assert( strcmp( ctx->buf, "YWJj\nZGVm\nZ2g=" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 7, "\n", 4 );
rtems_test_assert( n == 14 );
rtems_test_assert( strcmp( ctx->buf, "YWJj\nZGVm\nZw==" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 6, "\n", 4 );
rtems_test_assert( n == 9 );
rtems_test_assert( strcmp( ctx->buf, "YWJj\nZGVm" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 5, "\n", 4 );
rtems_test_assert( n == 9 );
rtems_test_assert( strcmp( ctx->buf, "YWJj\nZGU=" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 4, "\n", 4 );
rtems_test_assert( n == 9 );
rtems_test_assert( strcmp( ctx->buf, "YWJj\nZA==" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 3, "\n", 4 );
rtems_test_assert( n == 4 );
rtems_test_assert( strcmp( ctx->buf, "YWJj" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 2, "\n", 4 );
rtems_test_assert( n == 4 );
rtems_test_assert( strcmp( ctx->buf, "YWI=" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 1, "\n", 4 );
rtems_test_assert( n == 4 );
rtems_test_assert( strcmp( ctx->buf, "YQ==" ) == 0 );
clear( ctx );
n = _IO_Base64( put_char, ctx, buf, 0, "\n", 4 );
rtems_test_assert( n == 0 );
}
static rtems_task Init(
rtems_task_argument argument
)
@@ -201,6 +256,7 @@ static rtems_task Init(
do_getchark();
test_io_printf(&test_instance);
test_io_base64(&test_instance);
TEST_END();
rtems_test_exit( 0 );