|
private inflate_flush ( |
||
| z | ||
| r | int | |
| return | int | |
internal int proc(InfBlocks s, ZStream z, int r)
{
int j; // temporary storage
int tindex; // temporary pointer
int e; // extra bits or operation
int b = 0; // bit buffer
int k = 0; // bits in bit buffer
int p = 0; // input data pointer
int n; // bytes available there
int q; // output window write pointer
int m; // bytes to end of window or read pointer
int f; // pointer to copy strings from
// copy input/output information to locals (UPDATE macro restores)
p = z.next_in_index; n = z.avail_in; b = s.bitb; k = s.bitk;
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
// process input and output based on current state
while (true)
{
switch (mode)
{
// waiting for "i:"=input, "o:"=output, "x:"=nothing
case START: // x: set up for LEN
if (m >= 258 && n >= 10)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
r = inflate_fast(lbits, dbits,
ltree, ltree_index,
dtree, dtree_index,
s, z);
p = z.next_in_index; n = z.avail_in; b = s.bitb; k = s.bitk;
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (r != Z_OK)
{
mode = r == Z_STREAM_END ? WASH : BADCODE;
break;
}
}
need = lbits;
tree = ltree;
tree_index = ltree_index;
mode = LEN;
goto case LEN;
case LEN: // i: get length/literal/eob next
j = need;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
tindex = (tree_index + (b & inflate_mask[j])) * 3;
b >>= (tree[tindex + 1]);
k -= (tree[tindex + 1]);
e = tree[tindex];
if (e == 0) // literal
{
lit = tree[tindex + 2];
mode = LIT;
break;
}
if ((e & 16) != 0) // length
{
get = e & 15;
len = tree[tindex + 2];
mode = LENEXT;
break;
}
if ((e & 64) == 0) // next table
{
need = e;
tree_index = tindex / 3 + tree[tindex + 2];
break;
}
if ((e & 32) != 0) // end of block
{
mode = WASH;
break;
}
mode = BADCODE; // invalid code
z.msg = "invalid literal/length code";
r = Z_DATA_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
case LENEXT: // i: getting length extra (have base)
j = get;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--; b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
len += (b & inflate_mask[j]);
b >>= j;
k -= j;
need = dbits;
tree = dtree;
tree_index = dtree_index;
mode = DIST;
goto case DIST;
case DIST: // i: get distance next
j = need;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--; b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
tindex = (tree_index + (b & inflate_mask[j])) * 3;
b >>= tree[tindex + 1];
k -= tree[tindex + 1];
e = (tree[tindex]);
if ((e & 16) != 0) // distance
{
get = e & 15;
dist = tree[tindex + 2];
mode = DISTEXT;
break;
}
if ((e & 64) == 0) // next table
{
need = e;
tree_index = tindex / 3 + tree[tindex + 2];
break;
}
mode = BADCODE; // invalid code
z.msg = "invalid distance code";
r = Z_DATA_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
case DISTEXT: // i: getting distance extra
j = get;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--; b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
dist += (b & inflate_mask[j]);
b >>= j;
k -= j;
mode = COPY;
goto case COPY;
case COPY: // o: copying bytes in window, waiting for space
f = q - dist;
while (f < 0) // modulo window size-"while" instead
{
f += s.end; // of "if" handles invalid distances
}
while (len != 0)
{
if (m == 0)
{
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.write = q; r = s.inflate_flush(z, r);
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
}
}
s.window[q++] = s.window[f++]; m--;
if (f == s.end)
{
f = 0;
}
len--;
}
mode = START;
break;
case LIT: // o: got literal, waiting for output space
if (m == 0)
{
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.write = q; r = s.inflate_flush(z, r);
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
}
}
r = Z_OK;
s.window[q++] = (byte)lit; m--;
mode = START;
break;
case WASH: // o: got eob, possibly more output
if (k > 7) // return unused byte, if any
{
k -= 8;
n++;
p--; // can always return one
}
s.write = q; r = s.inflate_flush(z, r);
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (s.read != s.write)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
mode = END;
goto case END;
case END:
r = Z_STREAM_END;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
case BADCODE: // x: got error
r = Z_DATA_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
default:
r = Z_STREAM_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
}
}
internal int proc(InfBlocks s, ZStream z, int r){
int j; // temporary storage
int tindex; // temporary pointer
int e; // extra bits or operation
int b=0; // bit buffer
int k=0; // bits in bit buffer
int p=0; // input data pointer
int n; // bytes available there
int q; // output window write pointer
int m; // bytes to end of window or read pointer
int f; // pointer to copy strings from
// copy input/output information to locals (UPDATE macro restores)
p=z.next_in_index;n=z.avail_in;b=s.bitb;k=s.bitk;
q=s.write;m=q<s.read?s.read-q-1:s.end-q;
// process input and output based on current state
while (true){
switch (mode){
// waiting for "i:"=input, "o:"=output, "x:"=nothing
case START: // x: set up for LEN
if (m >= 258 && n >= 10){
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
r = inflate_fast(lbits, dbits,
ltree, ltree_index,
dtree, dtree_index,
s, z);
p=z.next_in_index;n=z.avail_in;b=s.bitb;k=s.bitk;
q=s.write;m=q<s.read?s.read-q-1:s.end-q;
if (r != Z_OK){
mode = r == Z_STREAM_END ? WASH : BADCODE;
break;
}
}
need = lbits;
tree = ltree;
tree_index=ltree_index;
mode = LEN;
goto case LEN;
case LEN: // i: get length/literal/eob next
j = need;
while(k<(j)){
if(n!=0)r=Z_OK;
else{
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
n--;
b|=(z.next_in[p++]&0xff)<<k;
k+=8;
}
tindex=(tree_index+(b&inflate_mask[j]))*3;
b>>=(tree[tindex+1]);
k-=(tree[tindex+1]);
e=tree[tindex];
if(e == 0){ // literal
lit = tree[tindex+2];
mode = LIT;
break;
}
if((e & 16)!=0 ){ // length
get = e & 15;
len = tree[tindex+2];
mode = LENEXT;
break;
}
if ((e & 64) == 0){ // next table
need = e;
tree_index = tindex/3+tree[tindex+2];
break;
}
if ((e & 32)!=0){ // end of block
mode = WASH;
break;
}
mode = BADCODE; // invalid code
z.msg = "invalid literal/length code";
r = Z_DATA_ERROR;
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
case LENEXT: // i: getting length extra (have base)
j = get;
while(k<(j)){
if(n!=0)r=Z_OK;
else{
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
n--; b|=(z.next_in[p++]&0xff)<<k;
k+=8;
}
len += (b & inflate_mask[j]);
b>>=j;
k-=j;
need = dbits;
tree = dtree;
tree_index=dtree_index;
mode = DIST;
goto case DIST;
case DIST: // i: get distance next
j = need;
while(k<(j)){
if(n!=0)r=Z_OK;
else{
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
n--; b|=(z.next_in[p++]&0xff)<<k;
k+=8;
}
tindex=(tree_index+(b & inflate_mask[j]))*3;
b>>=tree[tindex+1];
k-=tree[tindex+1];
e = (tree[tindex]);
if((e & 16)!=0){ // distance
get = e & 15;
dist = tree[tindex+2];
mode = DISTEXT;
break;
}
if ((e & 64) == 0){ // next table
need = e;
tree_index = tindex/3 + tree[tindex+2];
break;
}
mode = BADCODE; // invalid code
z.msg = "invalid distance code";
r = Z_DATA_ERROR;
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
case DISTEXT: // i: getting distance extra
j = get;
while(k<(j)){
if(n!=0)r=Z_OK;
else{
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
n--; b|=(z.next_in[p++]&0xff)<<k;
k+=8;
}
dist += (b & inflate_mask[j]);
b>>=j;
k-=j;
mode = COPY;
goto case COPY;
case COPY: // o: copying bytes in window, waiting for space
f = q - dist;
while(f < 0){ // modulo window size-"while" instead
f += s.end; // of "if" handles invalid distances
}
while (len!=0){
if(m==0){
if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
if(m==0){
s.write=q; r=s.inflate_flush(z,r);
q=s.write;m=q<s.read?s.read-q-1:s.end-q;
if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
if(m==0){
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
}
}
s.window[q++]=s.window[f++]; m--;
if (f == s.end)
f = 0;
len--;
}
mode = START;
break;
case LIT: // o: got literal, waiting for output space
if(m==0){
if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
if(m==0){
s.write=q; r=s.inflate_flush(z,r);
q=s.write;m=q<s.read?s.read-q-1:s.end-q;
if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
if(m==0){
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
}
}
r=Z_OK;
s.window[q++]=(byte)lit; m--;
mode = START;
break;
case WASH: // o: got eob, possibly more output
if (k > 7){ // return unused byte, if any
k -= 8;
n++;
p--; // can always return one
}
s.write=q; r=s.inflate_flush(z,r);
q=s.write;m=q<s.read?s.read-q-1:s.end-q;
if (s.read != s.write){
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
mode = END;
goto case END;
case END:
r = Z_STREAM_END;
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
case BADCODE: // x: got error
r = Z_DATA_ERROR;
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
default:
r = Z_STREAM_ERROR;
s.bitb=b;s.bitk=k;
z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
s.write=q;
return s.inflate_flush(z,r);
}
}
}
internal int proc(InfBlocks s, ZStream z, int r)
{
int get;
int num10;
int bitb = 0;
int bitk = 0;
int num6 = 0;
num6 = z.next_in_index;
int num7 = z.avail_in;
bitb = s.bitb;
bitk = s.bitk;
int write = s.write;
int num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
Label_0057:
switch (this.mode)
{
case 0:
if ((num9 < 0x102) || (num7 < 10))
{
break;
}
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
r = this.inflate_fast(this.lbits, this.dbits, this.ltree, this.ltree_index, this.dtree, this.dtree_index, s, z);
num6 = z.next_in_index;
num7 = z.avail_in;
bitb = s.bitb;
bitk = s.bitk;
write = s.write;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
if (r == 0)
{
break;
}
this.mode = (r != 1) ? 9 : 7;
goto Label_0057;
case 1:
goto Label_01B3;
case 2:
get = this.get;
while (bitk < get)
{
if (num7 != 0)
{
r = 0;
}
else
{
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
num7--;
bitb |= (z.next_in[num6++] & 0xff) << bitk;
bitk += 8;
}
this.len += bitb & inflate_mask[get];
bitb = bitb >> get;
bitk -= get;
this.need = this.dbits;
this.tree = this.dtree;
this.tree_index = this.dtree_index;
this.mode = 3;
goto Label_0454;
case 3:
goto Label_0454;
case 4:
get = this.get;
while (bitk < get)
{
if (num7 != 0)
{
r = 0;
}
else
{
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
num7--;
bitb |= (z.next_in[num6++] & 0xff) << bitk;
bitk += 8;
}
this.dist += bitb & inflate_mask[get];
bitb = bitb >> get;
bitk -= get;
this.mode = 5;
goto Label_069A;
case 5:
goto Label_069A;
case 6:
if (num9 == 0)
{
if ((write == s.end) && (s.read != 0))
{
write = 0;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
}
if (num9 == 0)
{
s.write = write;
r = s.inflate_flush(z, r);
write = s.write;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
if ((write == s.end) && (s.read != 0))
{
write = 0;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
}
if (num9 == 0)
{
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
}
}
r = 0;
s.window[write++] = (byte)this.lit;
num9--;
this.mode = 0;
goto Label_0057;
case 7:
if (bitk > 7)
{
bitk -= 8;
num7++;
num6--;
}
s.write = write;
r = s.inflate_flush(z, r);
write = s.write;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
if (s.read != s.write)
{
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
this.mode = 8;
goto Label_0A4B;
case 8:
goto Label_0A4B;
case 9:
r = -3;
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
default:
r = -2;
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
this.need = this.lbits;
this.tree = this.ltree;
this.tree_index = this.ltree_index;
this.mode = 1;
Label_01B3:
get = this.need;
while (bitk < get)
{
if (num7 != 0)
{
r = 0;
}
else
{
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
num7--;
bitb |= (z.next_in[num6++] & 0xff) << bitk;
bitk += 8;
}
int index = (this.tree_index + (bitb & inflate_mask[get])) * 3;
bitb = bitb >> this.tree[index + 1];
bitk -= this.tree[index + 1];
int num3 = this.tree[index];
if (num3 == 0)
{
this.lit = this.tree[index + 2];
this.mode = 6;
goto Label_0057;
}
if ((num3 & 0x10) != 0)
{
this.get = num3 & 15;
this.len = this.tree[index + 2];
this.mode = 2;
goto Label_0057;
}
if ((num3 & 0x40) == 0)
{
this.need = num3;
this.tree_index = (index / 3) + this.tree[index + 2];
goto Label_0057;
}
if ((num3 & 0x20) != 0)
{
this.mode = 7;
goto Label_0057;
}
this.mode = 9;
z.msg = "invalid literal/length code";
r = -3;
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
Label_0454:
get = this.need;
while (bitk < get)
{
if (num7 != 0)
{
r = 0;
}
else
{
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
num7--;
bitb |= (z.next_in[num6++] & 0xff) << bitk;
bitk += 8;
}
index = (this.tree_index + (bitb & inflate_mask[get])) * 3;
bitb = bitb >> this.tree[index + 1];
bitk -= this.tree[index + 1];
num3 = this.tree[index];
if ((num3 & 0x10) != 0)
{
this.get = num3 & 15;
this.dist = this.tree[index + 2];
this.mode = 4;
goto Label_0057;
}
if ((num3 & 0x40) == 0)
{
this.need = num3;
this.tree_index = (index / 3) + this.tree[index + 2];
goto Label_0057;
}
this.mode = 9;
z.msg = "invalid distance code";
r = -3;
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
Label_069A:
num10 = write - this.dist;
while (num10 < 0)
{
num10 += s.end;
}
while (this.len != 0)
{
if (num9 == 0)
{
if ((write == s.end) && (s.read != 0))
{
write = 0;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
}
if (num9 == 0)
{
s.write = write;
r = s.inflate_flush(z, r);
write = s.write;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
if ((write == s.end) && (s.read != 0))
{
write = 0;
num9 = (write >= s.read) ? (s.end - write) : ((s.read - write) - 1);
}
if (num9 == 0)
{
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
}
}
s.window[write++] = s.window[num10++];
num9--;
if (num10 == s.end)
{
num10 = 0;
}
this.len--;
}
this.mode = 0;
goto Label_0057;
Label_0A4B:
r = 1;
s.bitb = bitb;
s.bitk = bitk;
z.avail_in = num7;
z.total_in += num6 - z.next_in_index;
z.next_in_index = num6;
s.write = write;
return(s.inflate_flush(z, r));
}
internal int proc(InfBlocks s, ZStream z, int r)
{
int num = 0;
int num2 = 0;
int num3 = 0;
num3 = z.next_in_index;
int num4 = z.avail_in;
num = s.bitb;
num2 = s.bitk;
int num5 = s.write;
int num6 = (num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1);
while (true)
{
switch (mode)
{
case 0:
if (num6 >= 258 && num4 >= 10)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
r = inflate_fast(lbits, dbits, ltree, ltree_index, dtree, dtree_index, s, z);
num3 = z.next_in_index;
num4 = z.avail_in;
num = s.bitb;
num2 = s.bitk;
num5 = s.write;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
if (r != 0)
{
mode = ((r != 1) ? 9 : 7);
break;
}
}
need = lbits;
tree = ltree;
tree_index = ltree_index;
mode = 1;
goto case 1;
case 1:
{
int num8;
for (num8 = need; num2 < num8; num2 += 8)
{
if (num4 == 0)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
r = 0;
num4--;
num |= (z.next_in[num3++] & 0xFF) << num2;
}
int num11 = (tree_index + (num & inflate_mask[num8])) * 3;
num >>= tree[num11 + 1];
num2 -= tree[num11 + 1];
int num12 = tree[num11];
if (num12 == 0)
{
lit = tree[num11 + 2];
mode = 6;
}
else if ((num12 & 0x10) != 0)
{
get = (num12 & 0xF);
len = tree[num11 + 2];
mode = 2;
}
else if ((num12 & 0x40) == 0)
{
need = num12;
tree_index = num11 / 3 + tree[num11 + 2];
}
else
{
if ((num12 & 0x20) == 0)
{
mode = 9;
z.msg = "invalid literal/length code";
r = -3;
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
mode = 7;
}
break;
}
case 2:
{
int num8;
for (num8 = get; num2 < num8; num2 += 8)
{
if (num4 == 0)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
r = 0;
num4--;
num |= (z.next_in[num3++] & 0xFF) << num2;
}
len += (num & inflate_mask[num8]);
num >>= num8;
num2 -= num8;
need = dbits;
tree = dtree;
tree_index = dtree_index;
mode = 3;
goto case 3;
}
case 3:
{
int num8;
for (num8 = need; num2 < num8; num2 += 8)
{
if (num4 == 0)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
r = 0;
num4--;
num |= (z.next_in[num3++] & 0xFF) << num2;
}
int num11 = (tree_index + (num & inflate_mask[num8])) * 3;
num >>= tree[num11 + 1];
num2 -= tree[num11 + 1];
int num12 = tree[num11];
if ((num12 & 0x10) != 0)
{
get = (num12 & 0xF);
dist = tree[num11 + 2];
mode = 4;
}
else
{
if ((num12 & 0x40) != 0)
{
mode = 9;
z.msg = "invalid distance code";
r = -3;
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
need = num12;
tree_index = num11 / 3 + tree[num11 + 2];
}
break;
}
case 4:
{
int num8;
for (num8 = get; num2 < num8; num2 += 8)
{
if (num4 == 0)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
r = 0;
num4--;
num |= (z.next_in[num3++] & 0xFF) << num2;
}
dist += (num & inflate_mask[num8]);
num >>= num8;
num2 -= num8;
mode = 5;
goto case 5;
}
case 5:
{
int i;
for (i = num5 - dist; i < 0; i += s.end)
{
}
while (len != 0)
{
if (num6 == 0)
{
if (num5 == s.end && s.read != 0)
{
num5 = 0;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
}
if (num6 == 0)
{
s.write = num5;
r = s.inflate_flush(z, r);
num5 = s.write;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
if (num5 == s.end && s.read != 0)
{
num5 = 0;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
}
if (num6 == 0)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
}
}
s.window[num5++] = s.window[i++];
num6--;
if (i == s.end)
{
i = 0;
}
len--;
}
mode = 0;
break;
}
case 6:
if (num6 == 0)
{
if (num5 == s.end && s.read != 0)
{
num5 = 0;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
}
if (num6 == 0)
{
s.write = num5;
r = s.inflate_flush(z, r);
num5 = s.write;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
if (num5 == s.end && s.read != 0)
{
num5 = 0;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
}
if (num6 == 0)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
}
}
r = 0;
s.window[num5++] = (byte)lit;
num6--;
mode = 0;
break;
case 7:
if (num2 > 7)
{
num2 -= 8;
num4++;
num3--;
}
s.write = num5;
r = s.inflate_flush(z, r);
num5 = s.write;
num6 = ((num5 >= s.read) ? (s.end - num5) : (s.read - num5 - 1));
if (s.read != s.write)
{
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
mode = 8;
goto case 8;
case 8:
r = 1;
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
case 9:
r = -3;
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
default:
r = -2;
s.bitb = num;
s.bitk = num2;
z.avail_in = num4;
z.total_in += num3 - z.next_in_index;
z.next_in_index = num3;
s.write = num5;
return(s.inflate_flush(z, r));
}
}
}
internal int proc(InfBlocks s, ZStream z, int r)
{
int num = z.next_in_index;
int num2 = z.avail_in;
int num3 = s.bitb;
int i = s.bitk;
int num4 = s.write;
int num5 = (num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4);
while (true)
{
int num6;
switch (this.mode)
{
case 0:
if (num5 >= 258 && num2 >= 10)
{
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
r = this.inflate_fast((int)this.lbits, (int)this.dbits, this.ltree, this.ltree_index, this.dtree, this.dtree_index, s, z);
num = z.next_in_index;
num2 = z.avail_in;
num3 = s.bitb;
i = s.bitk;
num4 = s.write;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
if (r != 0)
{
this.mode = ((r == 1) ? 7 : 9);
continue;
}
}
this.need = (int)this.lbits;
this.tree = this.ltree;
this.tree_index = this.ltree_index;
this.mode = 1;
goto IL_199;
case 1:
goto IL_199;
case 2:
num6 = this.get;
while (i < num6)
{
if (num2 == 0)
{
goto IL_34E;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
this.len += (num3 & InfCodes.inflate_mask[num6]);
num3 >>= num6;
i -= num6;
this.need = (int)this.dbits;
this.tree = this.dtree;
this.tree_index = this.dtree_index;
this.mode = 3;
goto IL_411;
case 3:
goto IL_411;
case 4:
num6 = this.get;
while (i < num6)
{
if (num2 == 0)
{
goto IL_595;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
this.dist += (num3 & InfCodes.inflate_mask[num6]);
num3 >>= num6;
i -= num6;
this.mode = 5;
goto IL_634;
case 5:
goto IL_634;
case 6:
if (num5 == 0)
{
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
s.write = num4;
r = s.inflate_flush(z, r);
num4 = s.write;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
goto Block_44;
}
}
}
r = 0;
s.window[num4++] = (byte)this.lit;
num5--;
this.mode = 0;
continue;
case 7:
goto IL_8DA;
case 8:
goto IL_989;
case 9:
goto IL_9D3;
}
break;
IL_199:
num6 = this.need;
while (i < num6)
{
if (num2 == 0)
{
goto IL_1AB;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
int num7 = (this.tree_index + (num3 & InfCodes.inflate_mask[num6])) * 3;
num3 >>= this.tree[num7 + 1];
i -= this.tree[num7 + 1];
int num8 = this.tree[num7];
if (num8 == 0)
{
this.lit = this.tree[num7 + 2];
this.mode = 6;
continue;
}
if ((num8 & 16) != 0)
{
this.get = (num8 & 15);
this.len = this.tree[num7 + 2];
this.mode = 2;
continue;
}
if ((num8 & 64) == 0)
{
this.need = num8;
this.tree_index = num7 / 3 + this.tree[num7 + 2];
continue;
}
if ((num8 & 32) != 0)
{
this.mode = 7;
continue;
}
goto IL_2DE;
IL_411:
num6 = this.need;
while (i < num6)
{
if (num2 == 0)
{
goto IL_423;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num7 = (this.tree_index + (num3 & InfCodes.inflate_mask[num6])) * 3;
num3 >>= this.tree[num7 + 1];
i -= this.tree[num7 + 1];
num8 = this.tree[num7];
if ((num8 & 16) != 0)
{
this.get = (num8 & 15);
this.dist = this.tree[num7 + 2];
this.mode = 4;
continue;
}
if ((num8 & 64) == 0)
{
this.need = num8;
this.tree_index = num7 / 3 + this.tree[num7 + 2];
continue;
}
goto IL_525;
IL_634:
int j;
for (j = num4 - this.dist; j < 0; j += s.end)
{
}
while (this.len != 0)
{
if (num5 == 0)
{
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
s.write = num4;
r = s.inflate_flush(z, r);
num4 = s.write;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
goto Block_32;
}
}
}
s.window[num4++] = s.window[j++];
num5--;
if (j == s.end)
{
j = 0;
}
this.len--;
}
this.mode = 0;
}
r = -2;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_1AB:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_2DE:
this.mode = 9;
z.msg = "invalid literal/length code";
r = -3;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_34E:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_423:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_525:
this.mode = 9;
z.msg = "invalid distance code";
r = -3;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_595:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
Block_32:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
Block_44:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_8DA:
if (i > 7)
{
i -= 8;
num2++;
num--;
}
s.write = num4;
r = s.inflate_flush(z, r);
num4 = s.write;
int arg_92B_0 = (num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4);
if (s.read != s.write)
{
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
}
this.mode = 8;
IL_989:
r = 1;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_9D3:
r = -3;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
}
