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Diffstat (limited to 'src/lib/ppc405lib/sprintf.c')
| -rw-r--r-- | src/lib/ppc405lib/sprintf.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/lib/ppc405lib/sprintf.c b/src/lib/ppc405lib/sprintf.c new file mode 100644 index 0000000..0a95416 --- /dev/null +++ b/src/lib/ppc405lib/sprintf.c @@ -0,0 +1,136 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/lib/ppc405lib/sprintf.c $ */ +/* */ +/* OpenPOWER OnChipController Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2015 */ +/* [+] International Business Machines Corp. */ +/* */ +/* */ +/* Licensed under the Apache License, Version 2.0 (the "License"); */ +/* you may not use this file except in compliance with the License. */ +/* You may obtain a copy of the License at */ +/* */ +/* http://www.apache.org/licenses/LICENSE-2.0 */ +/* */ +/* Unless required by applicable law or agreed to in writing, software */ +/* distributed under the License is distributed on an "AS IS" BASIS, */ +/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ +/* implied. See the License for the specific language governing */ +/* permissions and limitations under the License. */ +/* */ +/* IBM_PROLOG_END_TAG */ +// $Id: sprintf.c,v 1.1.1.1 2013/12/11 20:49:20 bcbrock Exp $ +// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/lib/sprintf.c,v $ +//----------------------------------------------------------------------------- +// *! (C) Copyright International Business Machines Corp. 2013 +// *! All Rights Reserved -- Property of IBM +// *! *** IBM Confidential *** +//----------------------------------------------------------------------------- + +/// \file sprintf.c \brief Implementations of sprintf() and snprintf() using +/// StringStream. + +#include "ssx.h" +#include "ssx_io.h" +#include "string_stream.h" + + +// sprintf() is easy - just blindly copy in the data. + +static int +sprintf_swrite(FILE *stream, const void *buf, size_t size, size_t *written) +{ + StringStream *string = (StringStream *)stream; + + memcpy((void *)(&(string->data[string->next_write])), buf, size); + string->next_write += size; + *written = size; + return 0; +} + + +// snprintf() requires that bytes that won't fit in the array are simply +// discarded, but still accounted for. Note that vfprintf() is doing the +// high-level accounting. + +static int +snprintf_swrite(FILE *stream, const void *buf, size_t size, size_t *written) +{ + StringStream *string = (StringStream *)stream; + + size_t to_write = MIN(size, string->size - string->next_write - 1); + + memcpy((void *)(&(string->data[string->next_write])), buf, to_write); + string->next_write += to_write; + *written = size; + return 0; +} + + +// We use a StringStream to implement [v]sprintf() and [v]snprintf(). Once +// the formatting is finished the NULL terminator is added. + +int +vsprintf(char *str, const char *format, va_list argp) +{ + ssize_t rc; + StringStream stream; + + _string_stream_create(&stream, str, 1, 0, sprintf_swrite); + rc = vfprintf((FILE *)(&stream), format, argp); + stream.data[stream.next_write] = 0; + return rc; +} + + + +int +sprintf(char *str, const char *format, ...) +{ + va_list argp; + ssize_t rc; + + va_start(argp, format); + rc = vsprintf(str, format, argp); + va_end(argp); + + return rc; +} + + +int +vsnprintf(char *str, size_t size, const char *format, va_list argp) +{ + ssize_t rc; + StringStream stream; + + if (size == 0) { + return 0; + } + + _string_stream_create(&stream, str, size, 0, snprintf_swrite); + rc = vfprintf((FILE *)(&stream), format, argp); + stream.data[stream.next_write] = 0; + return rc; +} + + +int +snprintf(char *str, size_t size, const char *format, ...) +{ + va_list argp; + ssize_t rc; + + if (size == 0) { + return 0; + } + + va_start(argp, format); + rc = vsnprintf(str, size, format, argp); + va_end(argp); + + return rc; +} |
