Merge remote-tracking branch 'origin/master'

# Conflicts:
#	README.md
#	libs/raylib/.gitignore
#	libs/raylib/BINDINGS.md
#	libs/raylib/CHANGELOG
#	libs/raylib/CMakeLists.txt
#	libs/raylib/CONTRIBUTING.md
#	libs/raylib/HISTORY.md
#	libs/raylib/LICENSE
#	libs/raylib/README.md
#	libs/raylib/ROADMAP.md
#	libs/raylib/SPONSORS.md
#	libs/raylib/raylib.pc.in
#	libs/raylib/src/CMakeLists.txt
#	libs/raylib/src/Makefile
#	libs/raylib/src/camera.h
#	libs/raylib/src/config.h
#	libs/raylib/src/core.c
#	libs/raylib/src/easings.h
#	libs/raylib/src/external/cgltf.h
#	libs/raylib/src/external/dr_flac.h
#	libs/raylib/src/external/dr_mp3.h
#	libs/raylib/src/external/dr_wav.h
#	libs/raylib/src/external/glfw/CMake/glfw3.pc.in
#	libs/raylib/src/external/glfw/CMake/glfw3Config.cmake.in
#	libs/raylib/src/external/glfw/CMakeLists.txt
#	libs/raylib/src/external/glfw/README.md
#	libs/raylib/src/external/glfw/include/GLFW/glfw3.h
#	libs/raylib/src/external/glfw/src/cocoa_init.m
#	libs/raylib/src/external/glfw/src/cocoa_joystick.h
#	libs/raylib/src/external/glfw/src/cocoa_joystick.m
#	libs/raylib/src/external/glfw/src/cocoa_monitor.m
#	libs/raylib/src/external/glfw/src/cocoa_platform.h
#	libs/raylib/src/external/glfw/src/cocoa_window.m
#	libs/raylib/src/external/glfw/src/egl_context.c
#	libs/raylib/src/external/glfw/src/egl_context.h
#	libs/raylib/src/external/glfw/src/glfw_config.h.in
#	libs/raylib/src/external/glfw/src/init.c
#	libs/raylib/src/external/glfw/src/input.c
#	libs/raylib/src/external/glfw/src/internal.h
#	libs/raylib/src/external/glfw/src/linux_joystick.c
#	libs/raylib/src/external/glfw/src/linux_joystick.h
#	libs/raylib/src/external/glfw/src/mappings.h
#	libs/raylib/src/external/glfw/src/nsgl_context.m
#	libs/raylib/src/external/glfw/src/null_init.c
#	libs/raylib/src/external/glfw/src/null_joystick.c
#	libs/raylib/src/external/glfw/src/null_monitor.c
#	libs/raylib/src/external/glfw/src/null_platform.h
#	libs/raylib/src/external/glfw/src/null_window.c
#	libs/raylib/src/external/glfw/src/osmesa_context.h
#	libs/raylib/src/external/glfw/src/wgl_context.h
#	libs/raylib/src/external/glfw/src/win32_init.c
#	libs/raylib/src/external/glfw/src/win32_joystick.c
#	libs/raylib/src/external/glfw/src/win32_joystick.h
#	libs/raylib/src/external/glfw/src/win32_monitor.c
#	libs/raylib/src/external/glfw/src/win32_platform.h
#	libs/raylib/src/external/glfw/src/win32_window.c
#	libs/raylib/src/external/glfw/src/window.c
#	libs/raylib/src/external/glfw/src/wl_init.c
#	libs/raylib/src/external/glfw/src/wl_monitor.c
#	libs/raylib/src/external/glfw/src/wl_platform.h
#	libs/raylib/src/external/glfw/src/wl_window.c
#	libs/raylib/src/external/glfw/src/x11_init.c
#	libs/raylib/src/external/glfw/src/x11_monitor.c
#	libs/raylib/src/external/glfw/src/x11_platform.h
#	libs/raylib/src/external/glfw/src/x11_window.c
#	libs/raylib/src/external/jar_xm.h
#	libs/raylib/src/external/miniaudio.h
#	libs/raylib/src/external/stb_image.h
#	libs/raylib/src/external/stb_image_write.h
#	libs/raylib/src/external/stb_vorbis.h
#	libs/raylib/src/external/tinyobj_loader_c.h
#	libs/raylib/src/gestures.h
#	libs/raylib/src/models.c
#	libs/raylib/src/physac.h
#	libs/raylib/src/raudio.c
#	libs/raylib/src/raudio.h
#	libs/raylib/src/raylib.dll.rc
#	libs/raylib/src/raylib.dll.rc.data
#	libs/raylib/src/raylib.h
#	libs/raylib/src/raylib.rc
#	libs/raylib/src/raylib.rc.data
#	libs/raylib/src/raymath.h
#	libs/raylib/src/rglfw.c
#	libs/raylib/src/rlgl.h
#	libs/raylib/src/rmem.h
#	libs/raylib/src/rnet.h
#	libs/raylib/src/shapes.c
#	libs/raylib/src/text.c
#	libs/raylib/src/textures.c
#	libs/raylib/src/utils.c
#	libs/raylib/src/utils.h

1 files changed, 464 insertions, 0 deletions

diff --git a/libs/raylib/src/external/sinfl.h b/libs/raylib/src/external/sinfl.h
new file mode 100644
index 0000000..37c1aae
--- /dev/null
+++ b/libs/raylib/src/external/sinfl.h
@@ -0,0 +1,464 @@
+/*
+# Small Deflate
+`sdefl` is a small bare bone lossless compression library in ANSI C (ISO C90)
+which implements the Deflate (RFC 1951) compressed data format specification standard.
+It is mainly tuned to get as much speed and compression ratio from as little code
+as needed to keep the implementation as concise as possible.
+
+## Features
+- Portable single header and source file duo written in ANSI C (ISO C90)
+- Dual license with either MIT or public domain
+- Small implementation
+    - Deflate: 525 LoC
+    - Inflate: 320 LoC
+- Webassembly:
+    - Deflate ~3.7 KB (~2.2KB compressed)
+    - Inflate ~3.6 KB (~2.2KB compressed)
+
+## Usage:
+This file behaves differently depending on what symbols you define
+before including it.
+
+Header-File mode:
+If you do not define `SINFL_IMPLEMENTATION` before including this file, it
+will operate in header only mode. In this mode it declares all used structs
+and the API of the library without including the implementation of the library.
+
+Implementation mode:
+If you define `SINFL_IMPLEMENTATION` before including this file, it will
+compile the implementation. Make sure that you only include
+this file implementation in *one* C or C++ file to prevent collisions.
+
+### Benchmark
+
+| Compressor name         | Compression| Decompress.| Compr. size | Ratio |
+| ------------------------| -----------| -----------| ----------- | ----- |
+| sdefl 1.0 -0            |   127 MB/s |   233 MB/s |    40004116 | 39.88 |
+| sdefl 1.0 -1            |   111 MB/s |   259 MB/s |    38940674 | 38.82 |
+| sdefl 1.0 -5            |    45 MB/s |   275 MB/s |    36577183 | 36.46 |
+| sdefl 1.0 -7            |    38 MB/s |   276 MB/s |    36523781 | 36.41 |
+| zlib 1.2.11 -1          |    72 MB/s |   307 MB/s |    42298774 | 42.30 |
+| zlib 1.2.11 -6          |    24 MB/s |   313 MB/s |    36548921 | 36.55 |
+| zlib 1.2.11 -9          |    20 MB/s |   314 MB/s |    36475792 | 36.48 |
+| miniz 1.0 -1            |   122 MB/s |   208 MB/s |    48510028 | 48.51 |
+| miniz 1.0 -6            |    27 MB/s |   260 MB/s |    36513697 | 36.51 |
+| miniz 1.0 -9            |    23 MB/s |   261 MB/s |    36460101 | 36.46 |
+| libdeflate 1.3 -1       |   147 MB/s |   667 MB/s |    39597378 | 39.60 |
+| libdeflate 1.3 -6       |    69 MB/s |   689 MB/s |    36648318 | 36.65 |
+| libdeflate 1.3 -9       |    13 MB/s |   672 MB/s |    35197141 | 35.20 |
+| libdeflate 1.3 -12      |  8.13 MB/s |   670 MB/s |    35100568 | 35.10 |
+
+### Compression
+Results on the [Silesia compression corpus](http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia):
+
+| File    |   Original | `sdefl 0`  	| `sdefl 5` 	| `sdefl 7` |
+| :------ | ---------: | -----------------: | ---------: | ----------: |
+| dickens | 10.192.446 |  4,260,187|  3,845,261|   3,833,657 |
+| mozilla | 51.220.480 | 20,774,706 | 19,607,009 |  19,565,867 |
+| mr      |  9.970.564 | 3,860,531 |  3,673,460 |   3,665,627 |
+| nci     | 33.553.445 | 4,030,283 |  3,094,526 |   3,006,075 |
+| ooffice |  6.152.192 | 3,320,063 |  3,186,373 |   3,183,815 |
+| osdb    | 10.085.684 | 3,919,646 |  3,649,510 |   3,649,477 |
+| reymont |  6.627.202 | 2,263,378 |  1,857,588 |   1,827,237 |
+| samba   | 21.606.400 | 6,121,797 |  5,462,670 |   5,450,762 |
+| sao     |  7.251.944 | 5,612,421 |  5,485,380 |   5,481,765 |
+| webster | 41.458.703 | 13,972,648 | 12,059,432 |  11,991,421 |
+| xml     |  5.345.280 | 886,620|    674,009 |     662,141 |
+| x-ray   |  8.474.240 | 6,304,655 |  6,244,779 |   6,244,779 |
+
+## License
+```
+------------------------------------------------------------------------------
+This software is available under 2 licenses -- choose whichever you prefer.
+------------------------------------------------------------------------------
+ALTERNATIVE A - MIT License
+Copyright (c) 2020 Micha Mettke
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+------------------------------------------------------------------------------
+ALTERNATIVE B - Public Domain (www.unlicense.org)
+This is free and unencumbered software released into the public domain.
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
+software, either in source code form or as a compiled binary, for any purpose,
+commercial or non-commercial, and by any means.
+In jurisdictions that recognize copyright laws, the author or authors of this
+software dedicate any and all copyright interest in the software to the public
+domain. We make this dedication for the benefit of the public at large and to
+the detriment of our heirs and successors. We intend this dedication to be an
+overt act of relinquishment in perpetuity of all present and future rights to
+this software under copyright law.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+------------------------------------------------------------------------------
+```
+*/
+#ifndef SINFL_H_INCLUDED
+#define SINFL_H_INCLUDED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SINFL_PRE_TBL_SIZE 128
+#define SINFL_LIT_TBL_SIZE 1334
+#define SINFL_OFF_TBL_SIZE 402
+
+struct sinfl {
+  int bits, bitcnt;
+  unsigned lits[SINFL_LIT_TBL_SIZE];
+  unsigned dsts[SINFL_OFF_TBL_SIZE];
+};
+extern int sinflate(void *out, const void *in, int size);
+extern int zsinflate(void *out, const void *in, int size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SINFL_H_INCLUDED */
+
+#ifdef SINFL_IMPLEMENTATION
+
+#include <string.h> /* memcpy, memset */
+
+static int
+sinfl_bsr(unsigned n) {
+#ifdef _MSC_VER
+  _BitScanReverse(&n, n);
+  return n;
+#elif defined(__GNUC__) || defined(__clang__)
+  return 31 - __builtin_clz(n);
+#endif
+}
+static int
+sinfl_get(const unsigned char **src, const unsigned char *end, struct sinfl *s,
+          int n) {
+  const unsigned char *in = *src;
+  int v = s->bits & ((1 << n)-1);
+  s->bits >>= n;
+  s->bitcnt = s->bitcnt - n;
+  s->bitcnt = s->bitcnt < 0 ? 0 : s->bitcnt;
+  while (s->bitcnt < 16 && in < end) {
+    s->bits |= (*in++) << s->bitcnt;
+    s->bitcnt += 8;
+  }
+  *src = in;
+  return v;
+}
+struct sinfl_gen {
+  int len;
+  int cnt;
+  int word;
+  short* sorted;
+};
+static int
+sinfl_build_tbl(struct sinfl_gen *gen, unsigned *tbl, int tbl_bits,
+                const int *cnt) {
+  int tbl_end = 0;
+  while (!(gen->cnt = cnt[gen->len])) {
+    ++gen->len;
+  }
+  tbl_end = 1 << gen->len;
+  while (gen->len <= tbl_bits) {
+    do {unsigned bit = 0;
+      tbl[gen->word] = (*gen->sorted++ << 16) | gen->len;
+      if (gen->word == tbl_end - 1) {
+        for (; gen->len < tbl_bits; gen->len++) {
+          memcpy(&tbl[tbl_end], tbl, (size_t)tbl_end * sizeof(tbl[0]));
+          tbl_end <<= 1;
+        }
+        return 1;
+      }
+      bit = 1 << sinfl_bsr((unsigned)(gen->word ^ (tbl_end - 1)));
+      gen->word &= bit - 1;
+      gen->word |= bit;
+    } while (--gen->cnt);
+    do {
+      if (++gen->len <= tbl_bits) {
+        memcpy(&tbl[tbl_end], tbl, (size_t)tbl_end * sizeof(tbl[0]));
+        tbl_end <<= 1;
+      }
+    } while (!(gen->cnt = cnt[gen->len]));
+  }
+  return 0;
+}
+static void
+sinfl_build_subtbl(struct sinfl_gen *gen, unsigned *tbl, int tbl_bits,
+                   const int *cnt) {
+  int sub_bits = 0;
+  int sub_start = 0;
+  int sub_prefix = -1;
+  int tbl_end = 1 << tbl_bits;
+  while (1) {
+    unsigned entry;
+    int bit, stride, i;
+    /* start new subtable */
+    if ((gen->word & ((1 << tbl_bits)-1)) != sub_prefix) {
+      int used = 0;
+      sub_prefix = gen->word & ((1 << tbl_bits)-1);
+      sub_start = tbl_end;
+      sub_bits = gen->len - tbl_bits;
+      used = gen->cnt;
+      while (used < (1 << sub_bits)) {
+        sub_bits++;
+        used = (used << 1) + cnt[tbl_bits + sub_bits];
+      }
+      tbl_end = sub_start + (1 << sub_bits);
+      tbl[sub_prefix] = (sub_start << 16) | 0x10 | (sub_bits & 0xf);
+    }
+    /* fill subtable */
+    entry = (*gen->sorted << 16) | ((gen->len - tbl_bits) & 0xf);
+    gen->sorted++;
+    i = sub_start + (gen->word >> tbl_bits);
+    stride = 1 << (gen->len - tbl_bits);
+    do {
+      tbl[i] = entry;
+      i += stride;
+    } while (i < tbl_end);
+    if (gen->word == (1 << gen->len)-1) {
+      return;
+    }
+    bit = 1 << sinfl_bsr(gen->word ^ ((1 << gen->len) - 1));
+    gen->word &= bit - 1;
+    gen->word |= bit;
+    gen->cnt--;
+    while (!gen->cnt) {
+      gen->cnt = cnt[++gen->len];
+    }
+  }
+}
+static void
+sinfl_build(unsigned *tbl, unsigned char *lens, int tbl_bits, int maxlen,
+            int symcnt) {
+  int i, used = 0;
+  short sort[288];
+  int cnt[16] = {0}, off[16]= {0};
+  struct sinfl_gen gen = {0};
+  gen.sorted = sort;
+  gen.len = 1;
+
+  for (i = 0; i < symcnt; ++i)
+    cnt[lens[i]]++;
+  off[1] = cnt[0];
+  for (i = 1; i < maxlen; ++i) {
+    off[i + 1] = off[i] + cnt[i];
+    used = (used << 1) + cnt[i];
+  }
+  used = (used << 1) + cnt[i];
+  for (i = 0; i < symcnt; ++i)
+    gen.sorted[off[lens[i]]++] = (short)i;
+  gen.sorted += off[0];
+
+  if (used < (1 << maxlen)){
+    for (i = 0; i < 1 << tbl_bits; ++i)
+      tbl[i] = (0 << 16u) | 1;
+    return;
+  }
+  if (!sinfl_build_tbl(&gen, tbl, tbl_bits, cnt)){
+    sinfl_build_subtbl(&gen, tbl, tbl_bits, cnt);
+  }
+}
+static int
+sinfl_decode(const unsigned char **in, const unsigned char *end,
+             struct sinfl *s, const unsigned *tbl, int bit_len) {
+  int idx = s->bits & ((1 << bit_len) - 1);
+  unsigned key = tbl[idx];
+  if (key & 0x10) {
+    /* sub-table lookup */
+    int len = key & 0x0f;
+    sinfl_get(in, end, s, bit_len);
+    idx = s->bits & ((1 << len)-1);
+    key = tbl[((key >> 16) & 0xffff) + (unsigned)idx];
+  }
+  sinfl_get(in, end, s, key & 0x0f);
+  return (key >> 16) & 0x0fff;
+}
+static int
+sinfl_decompress(unsigned char *out, const unsigned char *in, int size) {
+  static const unsigned char order[] = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
+  static const short dbase[30+2] = {1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,
+      257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577};
+  static const unsigned char dbits[30+2] = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,
+      10,10,11,11,12,12,13,13,0,0};
+  static const short lbase[29+2] = {3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,
+      43,51,59,67,83,99,115,131,163,195,227,258,0,0};
+  static const unsigned char lbits[29+2] = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,
+      4,4,4,5,5,5,5,0,0,0};
+
+  const unsigned char *e = in + size, *o = out;
+  enum sinfl_states {hdr,stored,fixed,dyn,blk};
+  enum sinfl_states state = hdr;
+  struct sinfl s = {0};
+  int last = 0;
+
+  sinfl_get(&in,e,&s,0); /* buffer input */
+  while (in < e || s.bitcnt) {
+    switch (state) {
+    case hdr: {
+      int type = 0; /* block header */
+      last = sinfl_get(&in,e,&s,1);
+      type = sinfl_get(&in,e,&s,2);
+
+      switch (type) {default: return (int)(out-o);
+      case 0x00: state = stored; break;
+      case 0x01: state = fixed; break;
+      case 0x02: state = dyn; break;}
+    } break;
+    case stored: {
+      int len; /* uncompressed block */
+      sinfl_get(&in,e,&s,s.bitcnt & 7);
+      len = sinfl_get(&in,e,&s,16);
+      //int nlen = sinfl_get(&in,e,&s,16);
+      in -= 2; s.bitcnt = 0;
+
+      if (len > (e-in) || !len)
+        return (int)(out-o);
+      memcpy(out, in, (size_t)len);
+      in += len, out += len;
+      state = hdr;
+    } break;
+    case fixed: {
+      /* fixed huffman codes */
+      int n; unsigned char lens[288+32];
+      for (n = 0; n <= 143; n++) lens[n] = 8;
+      for (n = 144; n <= 255; n++) lens[n] = 9;
+      for (n = 256; n <= 279; n++) lens[n] = 7;
+      for (n = 280; n <= 287; n++) lens[n] = 8;
+      for (n = 0; n < 32; n++) lens[288+n] = 5;
+
+      /* build lit/dist tables */
+      sinfl_build(s.lits, lens, 10, 15, 288);
+      sinfl_build(s.dsts, lens + 288, 8, 15, 32);
+      state = blk;
+    } break;
+    case dyn: {
+        /* dynamic huffman codes */
+        int n, i;
+        unsigned hlens[SINFL_PRE_TBL_SIZE];
+        unsigned char nlens[19] = {0}, lens[288+32];
+        int nlit = 257 + sinfl_get(&in,e,&s,5);
+        int ndist = 1 + sinfl_get(&in,e,&s,5);
+        int nlen = 4 + sinfl_get(&in,e,&s,4);
+        for (n = 0; n < nlen; n++)
+          nlens[order[n]] = (unsigned char)sinfl_get(&in,e,&s,3);
+        sinfl_build(hlens, nlens, 7, 7, 19);
+
+        /* decode code lengths */
+        for (n = 0; n < nlit + ndist;) {
+          int sym = sinfl_decode(&in, e, &s, hlens, 7);
+          switch (sym) {default: lens[n++] = (unsigned char)sym; break;
+          case 16: for (i=3+sinfl_get(&in,e,&s,2);i;i--,n++) lens[n]=lens[n-1]; break;
+          case 17: for (i=3+sinfl_get(&in,e,&s,3);i;i--,n++) lens[n]=0; break;
+          case 18: for (i=11+sinfl_get(&in,e,&s,7);i;i--,n++) lens[n]=0; break;}
+        }
+        /* build lit/dist tables */
+        sinfl_build(s.lits, lens, 10, 15, nlit);
+        sinfl_build(s.dsts, lens + nlit, 8, 15, ndist);
+        state = blk;
+    } break;
+    case blk: {
+      /* decompress block */
+      int i, sym = sinfl_decode(&in, e, &s, s.lits, 10);
+      if (sym > 256) {sym -= 257; /* match symbol */
+        {int len = sinfl_get(&in, e, &s, lbits[sym]) + lbase[sym];
+        int dsym = sinfl_decode(&in, e, &s, s.dsts, 8);
+        int offs = sinfl_get(&in, e, &s, dbits[dsym]) + dbase[dsym];
+        if (offs > (int)(out-o)) {
+          return (int)(out-o);
+        } else if (offs == 1) {
+          /* rle match copying */
+          unsigned char c = *(out - offs);
+          unsigned long w = (c << 24) | (c << 16) | (c << 8) | c;
+          for (i = 0; i < len >> 2; ++i) {
+            memcpy(out, &w, 4);
+            out += 4;
+          }
+          len = len & 3;
+        } else if (offs >= 4) {
+          /* copy match */
+          int wcnt = len >> 2;
+          for (i = 0; i < wcnt; ++i) {
+            unsigned long w = 0;
+            memcpy(&w, out - offs, 4);
+            memcpy(out, &w, 4);
+            out += 4;
+          }
+          len = len & 3;
+        }
+        for (i = 0; i < len; ++i)
+          {*out = *(out-offs), out++;}
+        }
+      } else if (sym == 256) {
+        /* end of block */
+        if (last) return (int)(out-o);
+        state = hdr;
+        break;
+        /* literal */
+      } else *out++ = (unsigned char)sym;
+    } break;}
+  }
+  return (int)(out-o);
+}
+extern int
+sinflate(void *out, const void *in, int size) {
+  return sinfl_decompress((unsigned char*)out, (const unsigned char*)in, size);
+}
+static unsigned
+sinfl_adler32(unsigned adler32, const unsigned char *in, int in_len) {
+  const unsigned ADLER_MOD = 65521;
+  unsigned s1 = adler32 & 0xffff;
+  unsigned s2 = adler32 >> 16;
+  unsigned blk_len, i;
+
+  blk_len = in_len % 5552;
+  while (in_len) {
+    for (i=0; i + 7 < blk_len; i += 8) {
+      s1 += in[0]; s2 += s1;
+      s1 += in[1]; s2 += s1;
+      s1 += in[2]; s2 += s1;
+      s1 += in[3]; s2 += s1;
+      s1 += in[4]; s2 += s1;
+      s1 += in[5]; s2 += s1;
+      s1 += in[6]; s2 += s1;
+      s1 += in[7]; s2 += s1;
+      in += 8;
+    }
+    for (; i < blk_len; ++i)
+      s1 += *in++, s2 += s1;
+    s1 %= ADLER_MOD; s2 %= ADLER_MOD;
+    in_len -= blk_len;
+    blk_len = 5552;
+  } return (unsigned)(s2 << 16) + (unsigned)s1;
+}
+extern int
+zsinflate(void *out, const void *mem, int size) {
+  const unsigned char *in = (const unsigned char*)mem;
+  if (size >= 6) {
+    const unsigned char *eob = in + size - 4;
+    int n = sinfl_decompress((unsigned char*)out, in + 2u, size);
+    unsigned a = sinfl_adler32(1u, (unsigned char*)out, n);
+    unsigned h = eob[0] << 24 | eob[1] << 16 | eob[2] << 8 | eob[3] << 0;
+    return a == h ? n : -1;
+  } else {
+    return -1;
+  }
+}
+#endif
+