- e = insize-(o = (posbits>>3));
-
- for (i = 0 ; i < e ; ++i) {
- inbuf[i] = inbuf[i+o];
- }
- insize = e;
- posbits = 0;
-
- if (insize < INBUF_EXTRA) {
- rsize = read_buffer (in, (char *) inbuf + insize, INBUFSIZ);
- if (rsize == -1) {
- read_error();
- }
- insize += rsize;
- bytes_in += (off_t)rsize;
- }
- inbits = ((rsize != 0) ? ((long)insize - insize%n_bits)<<3 :
- ((long)insize<<3)-(n_bits-1));
-
- while (inbits > posbits) {
- if (free_ent > maxcode) {
- posbits = ((posbits-1) +
- ((n_bits<<3)-(posbits-1+(n_bits<<3))%(n_bits<<3)));
- ++n_bits;
- if (n_bits == maxbits) {
- maxcode = maxmaxcode;
- } else {
- maxcode = MAXCODE(n_bits)-1;
- }
- bitmask = (1<<n_bits)-1;
- goto resetbuf;
- }
- input(inbuf,posbits,code,n_bits,bitmask);
- Tracev((stderr, "%d ", code));
-
- if (oldcode == -1) {
- if (256 <= code)
- gzip_error ("corrupt input.");
- outbuf[outpos++] = (char_type)(finchar = (int)(oldcode=code));
- continue;
- }
- if (code == CLEAR && block_mode) {
- clear_tab_prefixof();
- free_ent = FIRST - 1;
- posbits = ((posbits-1) +
- ((n_bits<<3)-(posbits-1+(n_bits<<3))%(n_bits<<3)));
- maxcode = MAXCODE(n_bits = INIT_BITS)-1;
- bitmask = (1<<n_bits)-1;
- goto resetbuf;
- }
- incode = code;
- stackp = de_stack;
-
- if (code >= free_ent) { /* Special case for KwKwK string. */
- if (code > free_ent) {
+ o = posbits >> 3;
+ e = o <= insize ? insize - o : 0;
+
+ for (i = 0 ; i < e ; ++i) {
+ inbuf[i] = inbuf[i+o];
+ }
+ insize = e;
+ posbits = 0;
+
+ if (insize < INBUF_EXTRA) {
+ rsize = read_buffer (in, (char *) inbuf + insize, INBUFSIZ);
+ if (rsize == -1) {
+ read_error();
+ }
+ insize += rsize;
+ bytes_in += (off_t)rsize;
+ }
+ inbits = ((rsize != 0) ? ((long)insize - insize%n_bits)<<3 :
+ ((long)insize<<3)-(n_bits-1));
+
+ while (inbits > posbits) {
+ if (free_ent > maxcode) {
+ posbits = ((posbits-1) +
+ ((n_bits<<3)-(posbits-1+(n_bits<<3))%(n_bits<<3)));
+ ++n_bits;
+ if (n_bits == maxbits) {
+ maxcode = maxmaxcode;
+ } else {
+ maxcode = MAXCODE(n_bits)-1;
+ }
+ bitmask = (1<<n_bits)-1;
+ goto resetbuf;
+ }
+ input(inbuf,posbits,code,n_bits,bitmask);
+ Tracev((stderr, "%ld ", code));
+
+ if (oldcode == -1) {
+ if (256 <= code)
+ gzip_error ("corrupt input.");
+ outbuf[outpos++] = (char_type)(finchar = (int)(oldcode=code));
+ continue;
+ }
+ if (code == CLEAR && block_mode) {
+ clear_tab_prefixof();
+ free_ent = FIRST - 1;
+ posbits = ((posbits-1) +
+ ((n_bits<<3)-(posbits-1+(n_bits<<3))%(n_bits<<3)));
+ maxcode = MAXCODE(n_bits = INIT_BITS)-1;
+ bitmask = (1<<n_bits)-1;
+ goto resetbuf;
+ }
+ incode = code;
+ stackp = de_stack;
+
+ if (code >= free_ent) { /* Special case for KwKwK string. */
+ if (code > free_ent) {