[PATCH 1/3] score: Add _IO_Base64()
Sebastian Huber
sebastian.huber at embedded-brains.de
Fri Mar 13 12:02:02 UTC 2020
Update #3904.
---
cpukit/Makefile.am | 1 +
cpukit/include/rtems/score/io.h | 27 ++++++++++++-
cpukit/score/src/iobase64.c | 81 ++++++++++++++++++++++++++++++++++++++
testsuites/sptests/spprintk/init.c | 56 ++++++++++++++++++++++++++
4 files changed, 164 insertions(+), 1 deletion(-)
create mode 100644 cpukit/score/src/iobase64.c
diff --git a/cpukit/Makefile.am b/cpukit/Makefile.am
index fcb64cb992..968c52fe44 100644
--- a/cpukit/Makefile.am
+++ b/cpukit/Makefile.am
@@ -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
diff --git a/cpukit/include/rtems/score/io.h b/cpukit/include/rtems/score/io.h
index ae3c57f031..cca559cff0 100644
--- a/cpukit/include/rtems/score/io.h
+++ b/cpukit/include/rtems/score/io.h
@@ -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 */
diff --git a/cpukit/score/src/iobase64.c b/cpukit/score/src/iobase64.c
new file mode 100644
index 0000000000..ed27f67b60
--- /dev/null
+++ b/cpukit/score/src/iobase64.c
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: ISC */
+
+/*
+ * 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;
+}
diff --git a/testsuites/sptests/spprintk/init.c b/testsuites/sptests/spprintk/init.c
index 4ef28daf5d..0c0e4c7fb8 100644
--- a/testsuites/sptests/spprintk/init.c
+++ b/testsuites/sptests/spprintk/init.c
@@ -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 );
--
2.16.4
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