mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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0c3ba249ab
This reduces the number of exported header files to the minimum needed by
the existing userspace utilities and firmware implementations.
BUG=chromium:221544
BRANCH=none
TEST=manual, trybots
CQ-DEPEND=CL:47019,CL:47022,CL:47023
sudo FEATURES=test emerge vboot_reference
FEATURES=test emerge-$BOARD \
vboot_reference \
chromeos-cryptohome \
chromeos-installer \
chromeos-u-boot \
peach-u-boot \
depthcharge
Change-Id: I2946cc2dbaf5459a6c5eca92ca57d546498e6d85
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47021
Reviewed-by: Randall Spangler <rspangler@chromium.org>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* String utility functions that need to be built as part of the firmware.
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*/
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#include "sysincludes.h"
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#include "utility.h"
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uint32_t Uint64ToString(char *buf, uint32_t bufsize, uint64_t value,
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uint32_t radix, uint32_t zero_pad_width)
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{
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char ibuf[UINT64_TO_STRING_MAX];
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char *s;
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uint32_t usedsize = 1;
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if (!buf)
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return 0;
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/* Clear output buffer in case of error */
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*buf = '\0';
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/* Sanity-check input args */
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if (radix < 2 || radix > 36 || zero_pad_width >= UINT64_TO_STRING_MAX)
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return 0;
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/* Start at end of string and work backwards */
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s = ibuf + UINT64_TO_STRING_MAX - 1;
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*(s) = '\0';
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do {
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int v = value % radix;
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value /= radix;
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*(--s) = (char)(v < 10 ? v + '0' : v + 'a' - 10);
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if (++usedsize > bufsize)
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return 0; /* Result won't fit in buffer */
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} while (value);
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/* Zero-pad if necessary */
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while (usedsize <= zero_pad_width) {
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*(--s) = '0';
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if (++usedsize > bufsize)
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return 0; /* Result won't fit in buffer */
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}
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/* Now copy the string back to the input buffer. */
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Memcpy(buf, s, usedsize);
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/* Don't count the terminating null in the bytes used */
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return usedsize - 1;
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}
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uint32_t StrnAppend(char *dest, const char *src, uint32_t destlen)
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{
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uint32_t used = 0;
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if (!dest || !src || !destlen)
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return 0;
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/* Skip past existing string in destination.*/
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while (dest[used] && used < destlen - 1)
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used++;
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/* Now copy source */
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while (*src && used < destlen - 1)
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dest[used++] = *src++;
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/* Terminate destination and return count of non-null characters */
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dest[used] = 0;
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return used;
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}
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