zlib: Rename write variable to wnext (window write index)
There is no particular patch/description which described the reason for
this change but it was done as the part of zlib 1.2.3.5 release done by
zlib commit d004b047838a ("zlib 1.2.3.5"). It is preparation for followup
patch.
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/lib/zlib/inffast.c b/lib/zlib/inffast.c
index d61cf0e..bdaa6d0 100644
--- a/lib/zlib/inffast.c
+++ b/lib/zlib/inffast.c
@@ -80,7 +80,7 @@
#endif
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
- unsigned write; /* window write index */
+ unsigned wnext; /* window write index */
unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */
unsigned long hold; /* local strm->hold */
unsigned bits; /* local strm->bits */
@@ -115,7 +115,7 @@
#endif
wsize = state->wsize;
whave = state->whave;
- write = state->write;
+ wnext = state->wnext;
window = state->window;
hold = state->hold;
bits = state->bits;
@@ -201,7 +201,7 @@
break;
}
from = window - OFF;
- if (write == 0) { /* very common case */
+ if (wnext == 0) { /* very common case */
from += wsize - op;
if (op < len) { /* some from window */
len -= op;
@@ -211,17 +211,17 @@
from = out - dist; /* rest from output */
}
}
- else if (write < op) { /* wrap around window */
- from += wsize + write - op;
- op -= write;
+ else if (wnext < op) { /* wrap around window */
+ from += wsize + wnext - op;
+ op -= wnext;
if (op < len) { /* some from end of window */
len -= op;
do {
PUP(out) = PUP(from);
} while (--op);
from = window - OFF;
- if (write < len) { /* some from start of window */
- op = write;
+ if (wnext < len) { /* some from start of window */
+ op = wnext;
len -= op;
do {
PUP(out) = PUP(from);
@@ -231,7 +231,7 @@
}
}
else { /* contiguous in window */
- from += write - op;
+ from += wnext - op;
if (op < len) { /* some from window */
len -= op;
do {
@@ -343,7 +343,7 @@
inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
- Using bit fields for code structure
- Different op definition to avoid & for extra bits (do & for table bits)
- - Three separate decoding do-loops for direct, window, and write == 0
+ - Three separate decoding do-loops for direct, window, and wnext == 0
- Special case for distance > 1 copies to do overlapped load and store copy
- Explicit branch predictions (based on measured branch probabilities)
- Deferring match copy and interspersed it with decoding subsequent codes
diff --git a/lib/zlib/inflate.c b/lib/zlib/inflate.c
index 8f767b7..79c9e99 100644
--- a/lib/zlib/inflate.c
+++ b/lib/zlib/inflate.c
@@ -21,7 +21,7 @@
state->head = Z_NULL;
state->wsize = 0;
state->whave = 0;
- state->write = 0;
+ state->wnext = 0;
state->hold = 0;
state->bits = 0;
state->lencode = state->distcode = state->next = state->codes;
@@ -115,7 +115,7 @@
/* if window not in use yet, initialize */
if (state->wsize == 0) {
state->wsize = 1U << state->wbits;
- state->write = 0;
+ state->wnext = 0;
state->whave = 0;
}
@@ -123,22 +123,22 @@
copy = out - strm->avail_out;
if (copy >= state->wsize) {
zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);
- state->write = 0;
+ state->wnext = 0;
state->whave = state->wsize;
}
else {
- dist = state->wsize - state->write;
+ dist = state->wsize - state->wnext;
if (dist > copy) dist = copy;
- zmemcpy(state->window + state->write, strm->next_out - copy, dist);
+ zmemcpy(state->window + state->wnext, strm->next_out - copy, dist);
copy -= dist;
if (copy) {
zmemcpy(state->window, strm->next_out - copy, copy);
- state->write = copy;
+ state->wnext = copy;
state->whave = state->wsize;
}
else {
- state->write += dist;
- if (state->write == state->wsize) state->write = 0;
+ state->wnext += dist;
+ if (state->wnext == state->wsize) state->wnext = 0;
if (state->whave < state->wsize) state->whave += dist;
}
}
@@ -823,12 +823,12 @@
copy = out - left;
if (state->offset > copy) { /* copy from window */
copy = state->offset - copy;
- if (copy > state->write) {
- copy -= state->write;
+ if (copy > state->wnext) {
+ copy -= state->wnext;
from = state->window + (state->wsize - copy);
}
else
- from = state->window + (state->write - copy);
+ from = state->window + (state->wnext - copy);
if (copy > state->length) copy = state->length;
}
else { /* copy from output */
diff --git a/lib/zlib/inflate.h b/lib/zlib/inflate.h
index 07bd3e7..2657d61 100644
--- a/lib/zlib/inflate.h
+++ b/lib/zlib/inflate.h
@@ -88,7 +88,7 @@
unsigned wbits; /* log base 2 of requested window size */
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
- unsigned write; /* window write index */
+ unsigned wnext; /* window write index */
unsigned char FAR *window; /* allocated sliding window, if needed */
/* bit accumulator */
unsigned long hold; /* input bit accumulator */