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zlib 0.9

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This commit is contained in:
Mark Adler
2011-09-09 23:06:52 -07:00
parent 4ca984fb44
commit 64b2e89203
23 changed files with 783 additions and 200 deletions
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18
infcodes.c
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@@ -29,7 +29,7 @@ struct inflate_codes_state {
LIT, /* o: got literal, waiting for output space */
WASH, /* o: got eob, possibly still output waiting */
END, /* x: got eob and all data flushed */
BAD} /* x: got error */
BADCODE} /* x: got error */
mode; /* current inflate_codes mode */
/* mode dependent information */
@@ -70,6 +70,7 @@ z_stream *z;
c->dbits = (Byte)bd;
c->ltree = tl;
c->dtree = td;
Tracev((stderr, "inflate: codes new\n"));
}
return c;
}
@@ -107,7 +108,7 @@ int r;
LOAD
if (r != Z_OK)
{
c->mode = r == Z_STREAM_END ? WASH : BAD;
c->mode = r == Z_STREAM_END ? WASH : BADCODE;
break;
}
}
@@ -124,7 +125,7 @@ int r;
{
if (e == -128) /* invalid code */
{
c->mode = BAD;
c->mode = BADCODE;
z->msg = "invalid literal/length code";
r = Z_DATA_ERROR;
LEAVE
@@ -132,6 +133,7 @@ int r;
e = -e;
if (e & 64) /* end of block */
{
Tracevv((stderr, "inflate: end of block\n"));
c->mode = WASH;
break;
}
@@ -142,6 +144,9 @@ int r;
if (e & 16) /* literal */
{
c->sub.lit = t->base;
Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
"inflate: literal '%c'\n" :
"inflate: literal 0x%02x\n", t->base));
c->mode = LIT;
break;
}
@@ -155,6 +160,7 @@ int r;
DUMPBITS(j)
c->sub.code.need = c->dbits;
c->sub.code.tree = c->dtree;
Tracevv((stderr, "inflate: length %u\n", c->len));
c->mode = DIST;
case DIST: /* i: get distance next */
j = c->sub.code.need;
@@ -165,7 +171,7 @@ int r;
{
if (e == -128)
{
c->mode = BAD;
c->mode = BADCODE;
z->msg = "invalid distance code";
r = Z_DATA_ERROR;
LEAVE
@@ -182,6 +188,7 @@ int r;
NEEDBITS(j)
c->sub.copy.dist += (uInt)b & inflate_mask[j];
DUMPBITS(j)
Tracevv((stderr, "inflate: distance %u\n", c->sub.copy.dist));
c->mode = COPY;
case COPY: /* o: copying bytes in window, waiting for space */
f = (uInt)(q - s->window) < c->sub.copy.dist ?
@@ -210,7 +217,7 @@ int r;
case END:
r = Z_STREAM_END;
LEAVE
case BAD: /* x: got error */
case BADCODE: /* x: got error */
r = Z_DATA_ERROR;
LEAVE
default:
@@ -227,4 +234,5 @@ z_stream *z;
inflate_trees_free(c->dtree, z);
inflate_trees_free(c->ltree, z);
ZFREE(z, c);
Tracev((stderr, "inflate: codes free\n"));
}