fix: breakpad use miniz

third_party/zlib-ng/deflate_p.h

@@ -0,0 +1,128 @@
+/* deflate_p.h -- Private inline functions and macros shared with more than
+ *                one deflate method
+ *
+ * Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ *
+ */
+
+#ifndef DEFLATE_P_H
+#define DEFLATE_P_H
+
+/* Forward declare common non-inlined functions declared in deflate.c */
+
+#ifdef ZLIB_DEBUG
+/* ===========================================================================
+ * Check that the match at match_start is indeed a match.
+ */
+static inline void check_match(deflate_state *s, Pos start, Pos match, int length) {
+    /* check that the match length is valid*/
+    if (length < STD_MIN_MATCH || length > STD_MAX_MATCH) {
+        fprintf(stderr, " start %u, match %u, length %d\n", start, match, length);
+        z_error("invalid match length");
+    }
+    /* check that the match isn't at the same position as the start string */
+    if (match == start) {
+        fprintf(stderr, " start %u, match %u, length %d\n", start, match, length);
+        z_error("invalid match position");
+    }
+    /* check that the match is indeed a match */
+    if (memcmp(s->window + match, s->window + start, length) != 0) {
+        int32_t i = 0;
+        fprintf(stderr, " start %u, match %u, length %d\n", start, match, length);
+        do {
+            fprintf(stderr, "  %03d: match [%02x] start [%02x]\n", i++,
+                s->window[match++], s->window[start++]);
+        } while (--length != 0);
+        z_error("invalid match");
+    }
+    if (z_verbose > 1) {
+        fprintf(stderr, "\\[%u,%d]", start-match, length);
+        do {
+            putc(s->window[start++], stderr);
+        } while (--length != 0);
+    }
+}
+#else
+#define check_match(s, start, match, length)
+#endif
+
+Z_INTERNAL void PREFIX(flush_pending)(PREFIX3(stream) *strm);
+Z_INTERNAL unsigned PREFIX(read_buf)(PREFIX3(stream) *strm, unsigned char *buf, unsigned size);
+
+/* ===========================================================================
+ * Save the match info and tally the frequency counts. Return true if
+ * the current block must be flushed.
+ */
+
+extern const unsigned char Z_INTERNAL zng_length_code[];
+extern const unsigned char Z_INTERNAL zng_dist_code[];
+
+static inline int zng_tr_tally_lit(deflate_state *s, unsigned char c) {
+    /* c is the unmatched char */
+#ifdef LIT_MEM
+    s->d_buf[s->sym_next] = 0;
+    s->l_buf[s->sym_next++] = c;
+#else
+    s->sym_buf[s->sym_next++] = 0;
+    s->sym_buf[s->sym_next++] = 0;
+    s->sym_buf[s->sym_next++] = c;
+#endif
+    s->dyn_ltree[c].Freq++;
+    Tracevv((stderr, "%c", c));
+    Assert(c <= (STD_MAX_MATCH-STD_MIN_MATCH), "zng_tr_tally: bad literal");
+    return (s->sym_next == s->sym_end);
+}
+
+static inline int zng_tr_tally_dist(deflate_state* s, uint32_t dist, uint32_t len) {
+    /* dist: distance of matched string */
+    /* len: match length-STD_MIN_MATCH */
+#ifdef LIT_MEM
+    Assert(dist <= UINT16_MAX, "dist should fit in uint16_t");
+    Assert(len <= UINT8_MAX, "len should fit in uint8_t");
+    s->d_buf[s->sym_next] = (uint16_t)dist;
+    s->l_buf[s->sym_next++] = (uint8_t)len;
+#else
+    s->sym_buf[s->sym_next++] = (uint8_t)(dist);
+    s->sym_buf[s->sym_next++] = (uint8_t)(dist >> 8);
+    s->sym_buf[s->sym_next++] = (uint8_t)len;
+#endif
+    s->matches++;
+    dist--;
+    Assert(dist < MAX_DIST(s) && (uint16_t)d_code(dist) < (uint16_t)D_CODES,
+        "zng_tr_tally: bad match");
+
+    s->dyn_ltree[zng_length_code[len] + LITERALS + 1].Freq++;
+    s->dyn_dtree[d_code(dist)].Freq++;
+    return (s->sym_next == s->sym_end);
+}
+
+/* ===========================================================================
+ * Flush the current block, with given end-of-file flag.
+ * IN assertion: strstart is set to the end of the current match.
+ */
+#define FLUSH_BLOCK_ONLY(s, last) { \
+    zng_tr_flush_block(s, (s->block_start >= 0 ? \
+                   (char *)&s->window[(unsigned)s->block_start] : \
+                   NULL), \
+                   (uint32_t)((int)s->strstart - s->block_start), \
+                   (last)); \
+    s->block_start = (int)s->strstart; \
+    PREFIX(flush_pending)(s->strm); \
+}
+
+/* Same but force premature exit if necessary. */
+#define FLUSH_BLOCK(s, last) { \
+    FLUSH_BLOCK_ONLY(s, last); \
+    if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \
+}
+
+/* Maximum stored block length in deflate format (not including header). */
+#define MAX_STORED 65535
+
+/* Compression function. Returns the block state after the call. */
+typedef block_state (*compress_func) (deflate_state *s, int flush);
+/* Match function. Returns the longest match. */
+typedef uint32_t    (*match_func)    (deflate_state *const s, Pos cur_match);
+
+#endif