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chore(Deps/Zlib): move to Cloudflare fork (#21028)

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Co-authored-by: Andrew <47818697+Nyeriah@users.noreply.github.com>
This commit is contained in:
Grimdhex
2025-02-06 14:41:31 +01:00
committed by GitHub
parent 1cdc7ce56e
commit 994eccebdf
33 changed files with 4313 additions and 12888 deletions
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231
deps/zlib/gzread.c vendored
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@@ -6,36 +6,27 @@
#include "gzguts.h"
/* Local functions */
local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
local int gz_avail OF((gz_statep));
local int gz_look OF((gz_statep));
local int gz_decomp OF((gz_statep));
local int gz_fetch OF((gz_statep));
local int gz_skip OF((gz_statep, z_off64_t));
local z_size_t gz_read OF((gz_statep, voidp, z_size_t));
local int gz_load(gz_statep, unsigned char *, unsigned, unsigned *);
local int gz_avail(gz_statep);
local int gz_look(gz_statep);
local int gz_decomp(gz_statep);
local int gz_fetch(gz_statep);
local int gz_skip(gz_statep, z_off64_t);
/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from
state->fd, and update state->eof, state->err, and state->msg as appropriate.
This function needs to loop on read(), since read() is not guaranteed to
read the number of bytes requested, depending on the type of descriptor. */
local int gz_load(state, buf, len, have)
gz_statep state;
unsigned char *buf;
unsigned len;
unsigned *have;
{
int ret;
unsigned get, max = ((unsigned)-1 >> 2) + 1;
static int gz_load(gz_statep state, unsigned char *buf, unsigned len,
unsigned *have) {
z_ssize_t ret;
*have = 0;
do {
get = len - *have;
if (get > max)
get = max;
ret = read(state->fd, buf + *have, get);
ret = read(state->fd, buf + *have, len - *have);
if (ret <= 0)
break;
*have += (unsigned)ret;
*have += ret;
} while (*have < len);
if (ret < 0) {
gz_error(state, Z_ERRNO, zstrerror());
@@ -53,9 +44,7 @@ local int gz_load(state, buf, len, have)
If strm->avail_in != 0, then the current data is moved to the beginning of
the input buffer, and then the remainder of the buffer is loaded with the
available data from the input file. */
local int gz_avail(state)
gz_statep state;
{
static int gz_avail(gz_statep state) {
unsigned got;
z_streamp strm = &(state->strm);
@@ -88,9 +77,7 @@ local int gz_avail(state)
case, all further file reads will be directly to either the output buffer or
a user buffer. If decompressing, the inflate state will be initialized.
gz_look() will return 0 on success or -1 on failure. */
local int gz_look(state)
gz_statep state;
{
static int gz_look(gz_statep state) {
z_streamp strm = &(state->strm);
/* allocate read buffers and inflate memory */
@@ -157,11 +144,9 @@ local int gz_look(state)
the output buffer is larger than the input buffer, which also assures
space for gzungetc() */
state->x.next = state->out;
if (strm->avail_in) {
memcpy(state->x.next, strm->next_in, strm->avail_in);
state->x.have = strm->avail_in;
strm->avail_in = 0;
}
memcpy(state->x.next, strm->next_in, strm->avail_in);
state->x.have = strm->avail_in;
strm->avail_in = 0;
state->how = COPY;
state->direct = 1;
return 0;
@@ -172,9 +157,7 @@ local int gz_look(state)
data. If the gzip stream completes, state->how is reset to LOOK to look for
the next gzip stream or raw data, once state->x.have is depleted. Returns 0
on success, -1 on failure. */
local int gz_decomp(state)
gz_statep state;
{
static int gz_decomp(gz_statep state) {
int ret = Z_OK;
unsigned had;
z_streamp strm = &(state->strm);
@@ -226,9 +209,7 @@ local int gz_decomp(state)
looked for to determine whether to copy or decompress. Returns -1 on error,
otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the
end of the input file has been reached and all data has been processed. */
local int gz_fetch(state)
gz_statep state;
{
static int gz_fetch(gz_statep state) {
z_streamp strm = &(state->strm);
do {
@@ -256,10 +237,7 @@ local int gz_fetch(state)
}
/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */
local int gz_skip(state, len)
gz_statep state;
z_off64_t len;
{
static int gz_skip(gz_statep state, z_off64_t len) {
unsigned n;
/* skip over len bytes or reach end-of-file, whichever comes first */
@@ -287,17 +265,30 @@ local int gz_skip(state, len)
return 0;
}
/* Read len bytes into buf from file, or less than len up to the end of the
input. Return the number of bytes read. If zero is returned, either the
end of file was reached, or there was an error. state->err must be
consulted in that case to determine which. */
local z_size_t gz_read(state, buf, len)
gz_statep state;
voidp buf;
z_size_t len;
/* -- see zlib.h -- */
int ZEXPORT gzread(gzFile file, voidp buf, unsigned len)
{
z_size_t got;
unsigned n;
unsigned got, n;
gz_statep state;
z_streamp strm;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
strm = &(state->strm);
/* check that we're reading and that there's no (serious) error */
if (state->mode != GZ_READ ||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
return -1;
/* since an int is returned, make sure len fits in one, otherwise return
with an error (this avoids the flaw in the interface) */
if ((int)len < 0) {
gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
return -1;
}
/* if len is zero, avoid unnecessary operations */
if (len == 0)
@@ -307,38 +298,32 @@ local z_size_t gz_read(state, buf, len)
if (state->seek) {
state->seek = 0;
if (gz_skip(state, state->skip) == -1)
return 0;
return -1;
}
/* get len bytes to buf, or less than len if at the end */
got = 0;
do {
/* set n to the maximum amount of len that fits in an unsigned int */
n = (unsigned)-1;
if (n > len)
n = (unsigned)len;
/* first just try copying data from the output buffer */
if (state->x.have) {
if (state->x.have < n)
n = state->x.have;
n = state->x.have > len ? len : state->x.have;
memcpy(buf, state->x.next, n);
state->x.next += n;
state->x.have -= n;
}
/* output buffer empty -- return if we're at the end of the input */
else if (state->eof && state->strm.avail_in == 0) {
else if (state->eof && strm->avail_in == 0) {
state->past = 1; /* tried to read past end */
break;
}
/* need output data -- for small len or new stream load up our output
buffer */
else if (state->how == LOOK || n < (state->size << 1)) {
else if (state->how == LOOK || len < (state->size << 1)) {
/* get more output, looking for header if required */
if (gz_fetch(state) == -1)
return 0;
return -1;
continue; /* no progress yet -- go back to copy above */
/* the copy above assures that we will leave with space in the
output buffer, allowing at least one gzungetc() to succeed */
@@ -346,16 +331,16 @@ local z_size_t gz_read(state, buf, len)
/* large len -- read directly into user buffer */
else if (state->how == COPY) { /* read directly */
if (gz_load(state, (unsigned char *)buf, n, &n) == -1)
return 0;
if (gz_load(state, (unsigned char *)buf, len, &n) == -1)
return -1;
}
/* large len -- decompress directly into user buffer */
else { /* state->how == GZIP */
state->strm.avail_out = n;
state->strm.next_out = (unsigned char *)buf;
strm->avail_out = len;
strm->next_out = (unsigned char *)buf;
if (gz_decomp(state) == -1)
return 0;
return -1;
n = state->x.have;
state->x.have = 0;
}
@@ -367,75 +352,8 @@ local z_size_t gz_read(state, buf, len)
state->x.pos += n;
} while (len);
/* return number of bytes read into user buffer */
return got;
}
/* -- see zlib.h -- */
int ZEXPORT gzread(file, buf, len)
gzFile file;
voidp buf;
unsigned len;
{
gz_statep state;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
/* check that we're reading and that there's no (serious) error */
if (state->mode != GZ_READ ||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
return -1;
/* since an int is returned, make sure len fits in one, otherwise return
with an error (this avoids a flaw in the interface) */
if ((int)len < 0) {
gz_error(state, Z_STREAM_ERROR, "request does not fit in an int");
return -1;
}
/* read len or fewer bytes to buf */
len = (unsigned)gz_read(state, buf, len);
/* check for an error */
if (len == 0 && state->err != Z_OK && state->err != Z_BUF_ERROR)
return -1;
/* return the number of bytes read (this is assured to fit in an int) */
return (int)len;
}
/* -- see zlib.h -- */
z_size_t ZEXPORT gzfread(buf, size, nitems, file)
voidp buf;
z_size_t size;
z_size_t nitems;
gzFile file;
{
z_size_t len;
gz_statep state;
/* get internal structure */
if (file == NULL)
return 0;
state = (gz_statep)file;
/* check that we're reading and that there's no (serious) error */
if (state->mode != GZ_READ ||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
return 0;
/* compute bytes to read -- error on overflow */
len = nitems * size;
if (size && len / size != nitems) {
gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
return 0;
}
/* read len or fewer bytes to buf, return the number of full items read */
return len ? gz_read(state, buf, len) / size : 0;
/* return number of bytes read into user buffer (will fit in int) */
return (int)got;
}
/* -- see zlib.h -- */
@@ -444,9 +362,8 @@ z_size_t ZEXPORT gzfread(buf, size, nitems, file)
#else
# undef gzgetc
#endif
int ZEXPORT gzgetc(file)
gzFile file;
{
int ZEXPORT gzgetc(gzFile file) {
int ret;
unsigned char buf[1];
gz_statep state;
@@ -467,21 +384,17 @@ int ZEXPORT gzgetc(file)
return *(state->x.next)++;
}
/* nothing there -- try gz_read() */
return gz_read(state, buf, 1) < 1 ? -1 : buf[0];
/* nothing there -- try gzread() */
ret = gzread(file, buf, 1);
return ret < 1 ? -1 : buf[0];
}
int ZEXPORT gzgetc_(file)
gzFile file;
{
int ZEXPORT gzgetc_(gzFile file) {
return gzgetc(file);
}
/* -- see zlib.h -- */
int ZEXPORT gzungetc(c, file)
int c;
gzFile file;
{
int ZEXPORT gzungetc(int c, gzFile file) {
gz_statep state;
/* get internal structure */
@@ -489,6 +402,10 @@ int ZEXPORT gzungetc(c, file)
return -1;
state = (gz_statep)file;
/* in case this was just opened, set up the input buffer */
if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
(void)gz_look(state);
/* check that we're reading and that there's no (serious) error */
if (state->mode != GZ_READ ||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
@@ -509,7 +426,7 @@ int ZEXPORT gzungetc(c, file)
if (state->x.have == 0) {
state->x.have = 1;
state->x.next = state->out + (state->size << 1) - 1;
state->x.next[0] = (unsigned char)c;
state->x.next[0] = c;
state->x.pos--;
state->past = 0;
return c;
@@ -531,18 +448,14 @@ int ZEXPORT gzungetc(c, file)
}
state->x.have++;
state->x.next--;
state->x.next[0] = (unsigned char)c;
state->x.next[0] = c;
state->x.pos--;
state->past = 0;
return c;
}
/* -- see zlib.h -- */
char * ZEXPORT gzgets(file, buf, len)
gzFile file;
char *buf;
int len;
{
char * ZEXPORT gzgets(gzFile file, char *buf, int len) {
unsigned left, n;
char *str;
unsigned char *eol;
@@ -602,9 +515,7 @@ char * ZEXPORT gzgets(file, buf, len)
}
/* -- see zlib.h -- */
int ZEXPORT gzdirect(file)
gzFile file;
{
int ZEXPORT gzdirect(gzFile file) {
gz_statep state;
/* get internal structure */
@@ -622,9 +533,7 @@ int ZEXPORT gzdirect(file)
}
/* -- see zlib.h -- */
int ZEXPORT gzclose_r(file)
gzFile file;
{
int ZEXPORT gzclose_r(gzFile file) {
int ret, err;
gz_statep state;