Duplicate detection for encoding
diff --git a/src/UsefulBuf.c b/src/UsefulBuf.c
index 847395c..3c39ebd 100644
--- a/src/UsefulBuf.c
+++ b/src/UsefulBuf.c
@@ -1,6 +1,6 @@
/*==============================================================================
Copyright (c) 2016-2018, The Linux Foundation.
- Copyright (c) 2018-2023, Laurence Lundblade.
+ Copyright (c) 2018-2024, Laurence Lundblade.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -41,6 +41,7 @@
when who what, where, why
-------- ---- ---------------------------------------------------
+ 28/02/2022 llundblade Rearrange UsefulOutBuf_Compare().
19/11/2023 llundblade Add UsefulOutBuf_GetOutput().
19/11/2023 llundblade Add UsefulOutBuf_Swap().
19/11/2023 llundblade Add UsefulOutBuf_Compare().
@@ -433,21 +434,27 @@
*
* Code Reviewers: THIS FUNCTION DOES POINTER MATH
*/
-int UsefulOutBuf_Compare(UsefulOutBuf *me, size_t uStart1, size_t uStart2)
+int UsefulOutBuf_Compare(UsefulOutBuf *me,
+ size_t uStart1, size_t uLen1,
+ size_t uStart2, size_t uLen2)
{
const uint8_t *pBase;
const uint8_t *pEnd;
const uint8_t *p1;
const uint8_t *p2;
+ const uint8_t *p1End;
+ const uint8_t *p2End;
int uComparison;
pBase = me->UB.ptr;
pEnd = (const uint8_t *)pBase + me->data_len;
p1 = pBase + uStart1;
p2 = pBase + uStart2;
+ p1End = p1 + uLen1;
+ p2End = p2 + uLen2;
uComparison = 0;
- while(p1 < pEnd && p2 < pEnd) {
+ while(p1 < pEnd && p2 < pEnd && p1 < p1End && p2 < p2End) {
uComparison = *p2 - *p1;
if(uComparison != 0) {
break;;
@@ -460,6 +467,7 @@
}
+
/**
* @brief Reverse order of bytes in a buffer.
*