Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 486 insertions, 0 deletions

diff --git a/modules/brotli/enc/static_dict.c b/modules/brotli/enc/static_dict.c
new file mode 100644
index 0000000000..7299ab7203
--- /dev/null
+++ b/modules/brotli/enc/static_dict.c
@@ -0,0 +1,486 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+#include "./static_dict.h"
+
+#include "../common/dictionary.h"
+#include "../common/platform.h"
+#include "../common/transform.h"
+#include "./encoder_dict.h"
+#include "./find_match_length.h"
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+static BROTLI_INLINE uint32_t Hash(const uint8_t* data) {
+  uint32_t h = BROTLI_UNALIGNED_LOAD32LE(data) * kDictHashMul32;
+  /* The higher bits contain more mixture from the multiplication,
+     so we take our results from there. */
+  return h >> (32 - kDictNumBits);
+}
+
+static BROTLI_INLINE void AddMatch(size_t distance, size_t len, size_t len_code,
+                                   uint32_t* matches) {
+  uint32_t match = (uint32_t)((distance << 5) + len_code);
+  matches[len] = BROTLI_MIN(uint32_t, matches[len], match);
+}
+
+static BROTLI_INLINE size_t DictMatchLength(const BrotliDictionary* dictionary,
+                                            const uint8_t* data,
+                                            size_t id,
+                                            size_t len,
+                                            size_t maxlen) {
+  const size_t offset = dictionary->offsets_by_length[len] + len * id;
+  return FindMatchLengthWithLimit(&dictionary->data[offset], data,
+                                  BROTLI_MIN(size_t, len, maxlen));
+}
+
+static BROTLI_INLINE BROTLI_BOOL IsMatch(const BrotliDictionary* dictionary,
+    DictWord w, const uint8_t* data, size_t max_length) {
+  if (w.len > max_length) {
+    return BROTLI_FALSE;
+  } else {
+    const size_t offset = dictionary->offsets_by_length[w.len] +
+        (size_t)w.len * (size_t)w.idx;
+    const uint8_t* dict = &dictionary->data[offset];
+    if (w.transform == 0) {
+      /* Match against base dictionary word. */
+      return
+          TO_BROTLI_BOOL(FindMatchLengthWithLimit(dict, data, w.len) == w.len);
+    } else if (w.transform == 10) {
+      /* Match against uppercase first transform.
+         Note that there are only ASCII uppercase words in the lookup table. */
+      return TO_BROTLI_BOOL(dict[0] >= 'a' && dict[0] <= 'z' &&
+              (dict[0] ^ 32) == data[0] &&
+              FindMatchLengthWithLimit(&dict[1], &data[1], w.len - 1u) ==
+              w.len - 1u);
+    } else {
+      /* Match against uppercase all transform.
+         Note that there are only ASCII uppercase words in the lookup table. */
+      size_t i;
+      for (i = 0; i < w.len; ++i) {
+        if (dict[i] >= 'a' && dict[i] <= 'z') {
+          if ((dict[i] ^ 32) != data[i]) return BROTLI_FALSE;
+        } else {
+          if (dict[i] != data[i]) return BROTLI_FALSE;
+        }
+      }
+      return BROTLI_TRUE;
+    }
+  }
+}
+
+BROTLI_BOOL BrotliFindAllStaticDictionaryMatches(
+    const BrotliEncoderDictionary* dictionary, const uint8_t* data,
+    size_t min_length, size_t max_length, uint32_t* matches) {
+  BROTLI_BOOL has_found_match = BROTLI_FALSE;
+  {
+    size_t offset = dictionary->buckets[Hash(data)];
+    BROTLI_BOOL end = !offset;
+    while (!end) {
+      DictWord w = dictionary->dict_words[offset++];
+      const size_t l = w.len & 0x1F;
+      const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];
+      const size_t id = w.idx;
+      end = !!(w.len & 0x80);
+      w.len = (uint8_t)l;
+      if (w.transform == 0) {
+        const size_t matchlen =
+            DictMatchLength(dictionary->words, data, id, l, max_length);
+        const uint8_t* s;
+        size_t minlen;
+        size_t maxlen;
+        size_t len;
+        /* Transform "" + BROTLI_TRANSFORM_IDENTITY + "" */
+        if (matchlen == l) {
+          AddMatch(id, l, l, matches);
+          has_found_match = BROTLI_TRUE;
+        }
+        /* Transforms "" + BROTLI_TRANSFORM_OMIT_LAST_1 + "" and
+                      "" + BROTLI_TRANSFORM_OMIT_LAST_1 + "ing " */
+        if (matchlen >= l - 1) {
+          AddMatch(id + 12 * n, l - 1, l, matches);
+          if (l + 2 < max_length &&
+              data[l - 1] == 'i' && data[l] == 'n' && data[l + 1] == 'g' &&
+              data[l + 2] == ' ') {
+            AddMatch(id + 49 * n, l + 3, l, matches);
+          }
+          has_found_match = BROTLI_TRUE;
+        }
+        /* Transform "" + BROTLI_TRANSFORM_OMIT_LAST_# + "" (# = 2 .. 9) */
+        minlen = min_length;
+        if (l > 9) minlen = BROTLI_MAX(size_t, minlen, l - 9);
+        maxlen = BROTLI_MIN(size_t, matchlen, l - 2);
+        for (len = minlen; len <= maxlen; ++len) {
+          size_t cut = l - len;
+          size_t transform_id = (cut << 2) +
+              (size_t)((dictionary->cutoffTransforms >> (cut * 6)) & 0x3F);
+          AddMatch(id + transform_id * n, len, l, matches);
+          has_found_match = BROTLI_TRUE;
+        }
+        if (matchlen < l || l + 6 >= max_length) {
+          continue;
+        }
+        s = &data[l];
+        /* Transforms "" + BROTLI_TRANSFORM_IDENTITY + <suffix> */
+        if (s[0] == ' ') {
+          AddMatch(id + n, l + 1, l, matches);
+          if (s[1] == 'a') {
+            if (s[2] == ' ') {
+              AddMatch(id + 28 * n, l + 3, l, matches);
+            } else if (s[2] == 's') {
+              if (s[3] == ' ') AddMatch(id + 46 * n, l + 4, l, matches);
+            } else if (s[2] == 't') {
+              if (s[3] == ' ') AddMatch(id + 60 * n, l + 4, l, matches);
+            } else if (s[2] == 'n') {
+              if (s[3] == 'd' && s[4] == ' ') {
+                AddMatch(id + 10 * n, l + 5, l, matches);
+              }
+            }
+          } else if (s[1] == 'b') {
+            if (s[2] == 'y' && s[3] == ' ') {
+              AddMatch(id + 38 * n, l + 4, l, matches);
+            }
+          } else if (s[1] == 'i') {
+            if (s[2] == 'n') {
+              if (s[3] == ' ') AddMatch(id + 16 * n, l + 4, l, matches);
+            } else if (s[2] == 's') {
+              if (s[3] == ' ') AddMatch(id + 47 * n, l + 4, l, matches);
+            }
+          } else if (s[1] == 'f') {
+            if (s[2] == 'o') {
+              if (s[3] == 'r' && s[4] == ' ') {
+                AddMatch(id + 25 * n, l + 5, l, matches);
+              }
+            } else if (s[2] == 'r') {
+              if (s[3] == 'o' && s[4] == 'm' && s[5] == ' ') {
+                AddMatch(id + 37 * n, l + 6, l, matches);
+              }
+            }
+          } else if (s[1] == 'o') {
+            if (s[2] == 'f') {
+              if (s[3] == ' ') AddMatch(id + 8 * n, l + 4, l, matches);
+            } else if (s[2] == 'n') {
+              if (s[3] == ' ') AddMatch(id + 45 * n, l + 4, l, matches);
+            }
+          } else if (s[1] == 'n') {
+            if (s[2] == 'o' && s[3] == 't' && s[4] == ' ') {
+              AddMatch(id + 80 * n, l + 5, l, matches);
+            }
+          } else if (s[1] == 't') {
+            if (s[2] == 'h') {
+              if (s[3] == 'e') {
+                if (s[4] == ' ') AddMatch(id + 5 * n, l + 5, l, matches);
+              } else if (s[3] == 'a') {
+                if (s[4] == 't' && s[5] == ' ') {
+                  AddMatch(id + 29 * n, l + 6, l, matches);
+                }
+              }
+            } else if (s[2] == 'o') {
+              if (s[3] == ' ') AddMatch(id + 17 * n, l + 4, l, matches);
+            }
+          } else if (s[1] == 'w') {
+            if (s[2] == 'i' && s[3] == 't' && s[4] == 'h' && s[5] == ' ') {
+              AddMatch(id + 35 * n, l + 6, l, matches);
+            }
+          }
+        } else if (s[0] == '"') {
+          AddMatch(id + 19 * n, l + 1, l, matches);
+          if (s[1] == '>') {
+            AddMatch(id + 21 * n, l + 2, l, matches);
+          }
+        } else if (s[0] == '.') {
+          AddMatch(id + 20 * n, l + 1, l, matches);
+          if (s[1] == ' ') {
+            AddMatch(id + 31 * n, l + 2, l, matches);
+            if (s[2] == 'T' && s[3] == 'h') {
+              if (s[4] == 'e') {
+                if (s[5] == ' ') AddMatch(id + 43 * n, l + 6, l, matches);
+              } else if (s[4] == 'i') {
+                if (s[5] == 's' && s[6] == ' ') {
+                  AddMatch(id + 75 * n, l + 7, l, matches);
+                }
+              }
+            }
+          }
+        } else if (s[0] == ',') {
+          AddMatch(id + 76 * n, l + 1, l, matches);
+          if (s[1] == ' ') {
+            AddMatch(id + 14 * n, l + 2, l, matches);
+          }
+        } else if (s[0] == '\n') {
+          AddMatch(id + 22 * n, l + 1, l, matches);
+          if (s[1] == '\t') {
+            AddMatch(id + 50 * n, l + 2, l, matches);
+          }
+        } else if (s[0] == ']') {
+          AddMatch(id + 24 * n, l + 1, l, matches);
+        } else if (s[0] == '\'') {
+          AddMatch(id + 36 * n, l + 1, l, matches);
+        } else if (s[0] == ':') {
+          AddMatch(id + 51 * n, l + 1, l, matches);
+        } else if (s[0] == '(') {
+          AddMatch(id + 57 * n, l + 1, l, matches);
+        } else if (s[0] == '=') {
+          if (s[1] == '"') {
+            AddMatch(id + 70 * n, l + 2, l, matches);
+          } else if (s[1] == '\'') {
+            AddMatch(id + 86 * n, l + 2, l, matches);
+          }
+        } else if (s[0] == 'a') {
+          if (s[1] == 'l' && s[2] == ' ') {
+            AddMatch(id + 84 * n, l + 3, l, matches);
+          }
+        } else if (s[0] == 'e') {
+          if (s[1] == 'd') {
+            if (s[2] == ' ') AddMatch(id + 53 * n, l + 3, l, matches);
+          } else if (s[1] == 'r') {
+            if (s[2] == ' ') AddMatch(id + 82 * n, l + 3, l, matches);
+          } else if (s[1] == 's') {
+            if (s[2] == 't' && s[3] == ' ') {
+              AddMatch(id + 95 * n, l + 4, l, matches);
+            }
+          }
+        } else if (s[0] == 'f') {
+          if (s[1] == 'u' && s[2] == 'l' && s[3] == ' ') {
+            AddMatch(id + 90 * n, l + 4, l, matches);
+          }
+        } else if (s[0] == 'i') {
+          if (s[1] == 'v') {
+            if (s[2] == 'e' && s[3] == ' ') {
+              AddMatch(id + 92 * n, l + 4, l, matches);
+            }
+          } else if (s[1] == 'z') {
+            if (s[2] == 'e' && s[3] == ' ') {
+              AddMatch(id + 100 * n, l + 4, l, matches);
+            }
+          }
+        } else if (s[0] == 'l') {
+          if (s[1] == 'e') {
+            if (s[2] == 's' && s[3] == 's' && s[4] == ' ') {
+              AddMatch(id + 93 * n, l + 5, l, matches);
+            }
+          } else if (s[1] == 'y') {
+            if (s[2] == ' ') AddMatch(id + 61 * n, l + 3, l, matches);
+          }
+        } else if (s[0] == 'o') {
+          if (s[1] == 'u' && s[2] == 's' && s[3] == ' ') {
+            AddMatch(id + 106 * n, l + 4, l, matches);
+          }
+        }
+      } else {
+        /* Set is_all_caps=0 for BROTLI_TRANSFORM_UPPERCASE_FIRST and
+               is_all_caps=1 otherwise (BROTLI_TRANSFORM_UPPERCASE_ALL)
+           transform. */
+        const BROTLI_BOOL is_all_caps =
+            TO_BROTLI_BOOL(w.transform != BROTLI_TRANSFORM_UPPERCASE_FIRST);
+        const uint8_t* s;
+        if (!IsMatch(dictionary->words, w, data, max_length)) {
+          continue;
+        }
+        /* Transform "" + kUppercase{First,All} + "" */
+        AddMatch(id + (is_all_caps ? 44 : 9) * n, l, l, matches);
+        has_found_match = BROTLI_TRUE;
+        if (l + 1 >= max_length) {
+          continue;
+        }
+        /* Transforms "" + kUppercase{First,All} + <suffix> */
+        s = &data[l];
+        if (s[0] == ' ') {
+          AddMatch(id + (is_all_caps ? 68 : 4) * n, l + 1, l, matches);
+        } else if (s[0] == '"') {
+          AddMatch(id + (is_all_caps ? 87 : 66) * n, l + 1, l, matches);
+          if (s[1] == '>') {
+            AddMatch(id + (is_all_caps ? 97 : 69) * n, l + 2, l, matches);
+          }
+        } else if (s[0] == '.') {
+          AddMatch(id + (is_all_caps ? 101 : 79) * n, l + 1, l, matches);
+          if (s[1] == ' ') {
+            AddMatch(id + (is_all_caps ? 114 : 88) * n, l + 2, l, matches);
+          }
+        } else if (s[0] == ',') {
+          AddMatch(id + (is_all_caps ? 112 : 99) * n, l + 1, l, matches);
+          if (s[1] == ' ') {
+            AddMatch(id + (is_all_caps ? 107 : 58) * n, l + 2, l, matches);
+          }
+        } else if (s[0] == '\'') {
+          AddMatch(id + (is_all_caps ? 94 : 74) * n, l + 1, l, matches);
+        } else if (s[0] == '(') {
+          AddMatch(id + (is_all_caps ? 113 : 78) * n, l + 1, l, matches);
+        } else if (s[0] == '=') {
+          if (s[1] == '"') {
+            AddMatch(id + (is_all_caps ? 105 : 104) * n, l + 2, l, matches);
+          } else if (s[1] == '\'') {
+            AddMatch(id + (is_all_caps ? 116 : 108) * n, l + 2, l, matches);
+          }
+        }
+      }
+    }
+  }
+  /* Transforms with prefixes " " and "." */
+  if (max_length >= 5 && (data[0] == ' ' || data[0] == '.')) {
+    BROTLI_BOOL is_space = TO_BROTLI_BOOL(data[0] == ' ');
+    size_t offset = dictionary->buckets[Hash(&data[1])];
+    BROTLI_BOOL end = !offset;
+    while (!end) {
+      DictWord w = dictionary->dict_words[offset++];
+      const size_t l = w.len & 0x1F;
+      const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];
+      const size_t id = w.idx;
+      end = !!(w.len & 0x80);
+      w.len = (uint8_t)l;
+      if (w.transform == 0) {
+        const uint8_t* s;
+        if (!IsMatch(dictionary->words, w, &data[1], max_length - 1)) {
+          continue;
+        }
+        /* Transforms " " + BROTLI_TRANSFORM_IDENTITY + "" and
+                      "." + BROTLI_TRANSFORM_IDENTITY + "" */
+        AddMatch(id + (is_space ? 6 : 32) * n, l + 1, l, matches);
+        has_found_match = BROTLI_TRUE;
+        if (l + 2 >= max_length) {
+          continue;
+        }
+        /* Transforms " " + BROTLI_TRANSFORM_IDENTITY + <suffix> and
+                      "." + BROTLI_TRANSFORM_IDENTITY + <suffix>
+        */
+        s = &data[l + 1];
+        if (s[0] == ' ') {
+          AddMatch(id + (is_space ? 2 : 77) * n, l + 2, l, matches);
+        } else if (s[0] == '(') {
+          AddMatch(id + (is_space ? 89 : 67) * n, l + 2, l, matches);
+        } else if (is_space) {
+          if (s[0] == ',') {
+            AddMatch(id + 103 * n, l + 2, l, matches);
+            if (s[1] == ' ') {
+              AddMatch(id + 33 * n, l + 3, l, matches);
+            }
+          } else if (s[0] == '.') {
+            AddMatch(id + 71 * n, l + 2, l, matches);
+            if (s[1] == ' ') {
+              AddMatch(id + 52 * n, l + 3, l, matches);
+            }
+          } else if (s[0] == '=') {
+            if (s[1] == '"') {
+              AddMatch(id + 81 * n, l + 3, l, matches);
+            } else if (s[1] == '\'') {
+              AddMatch(id + 98 * n, l + 3, l, matches);
+            }
+          }
+        }
+      } else if (is_space) {
+        /* Set is_all_caps=0 for BROTLI_TRANSFORM_UPPERCASE_FIRST and
+               is_all_caps=1 otherwise (BROTLI_TRANSFORM_UPPERCASE_ALL)
+           transform. */
+        const BROTLI_BOOL is_all_caps =
+            TO_BROTLI_BOOL(w.transform != BROTLI_TRANSFORM_UPPERCASE_FIRST);
+        const uint8_t* s;
+        if (!IsMatch(dictionary->words, w, &data[1], max_length - 1)) {
+          continue;
+        }
+        /* Transforms " " + kUppercase{First,All} + "" */
+        AddMatch(id + (is_all_caps ? 85 : 30) * n, l + 1, l, matches);
+        has_found_match = BROTLI_TRUE;
+        if (l + 2 >= max_length) {
+          continue;
+        }
+        /* Transforms " " + kUppercase{First,All} + <suffix> */
+        s = &data[l + 1];
+        if (s[0] == ' ') {
+          AddMatch(id + (is_all_caps ? 83 : 15) * n, l + 2, l, matches);
+        } else if (s[0] == ',') {
+          if (!is_all_caps) {
+            AddMatch(id + 109 * n, l + 2, l, matches);
+          }
+          if (s[1] == ' ') {
+            AddMatch(id + (is_all_caps ? 111 : 65) * n, l + 3, l, matches);
+          }
+        } else if (s[0] == '.') {
+          AddMatch(id + (is_all_caps ? 115 : 96) * n, l + 2, l, matches);
+          if (s[1] == ' ') {
+            AddMatch(id + (is_all_caps ? 117 : 91) * n, l + 3, l, matches);
+          }
+        } else if (s[0] == '=') {
+          if (s[1] == '"') {
+            AddMatch(id + (is_all_caps ? 110 : 118) * n, l + 3, l, matches);
+          } else if (s[1] == '\'') {
+            AddMatch(id + (is_all_caps ? 119 : 120) * n, l + 3, l, matches);
+          }
+        }
+      }
+    }
+  }
+  if (max_length >= 6) {
+    /* Transforms with prefixes "e ", "s ", ", " and "\xC2\xA0" */
+    if ((data[1] == ' ' &&
+         (data[0] == 'e' || data[0] == 's' || data[0] == ',')) ||
+        (data[0] == 0xC2 && data[1] == 0xA0)) {
+      size_t offset = dictionary->buckets[Hash(&data[2])];
+      BROTLI_BOOL end = !offset;
+      while (!end) {
+        DictWord w = dictionary->dict_words[offset++];
+        const size_t l = w.len & 0x1F;
+        const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];
+        const size_t id = w.idx;
+        end = !!(w.len & 0x80);
+        w.len = (uint8_t)l;
+        if (w.transform == 0 &&
+            IsMatch(dictionary->words, w, &data[2], max_length - 2)) {
+          if (data[0] == 0xC2) {
+            AddMatch(id + 102 * n, l + 2, l, matches);
+            has_found_match = BROTLI_TRUE;
+          } else if (l + 2 < max_length && data[l + 2] == ' ') {
+            size_t t = data[0] == 'e' ? 18 : (data[0] == 's' ? 7 : 13);
+            AddMatch(id + t * n, l + 3, l, matches);
+            has_found_match = BROTLI_TRUE;
+          }
+        }
+      }
+    }
+  }
+  if (max_length >= 9) {
+    /* Transforms with prefixes " the " and ".com/" */
+    if ((data[0] == ' ' && data[1] == 't' && data[2] == 'h' &&
+         data[3] == 'e' && data[4] == ' ') ||
+        (data[0] == '.' && data[1] == 'c' && data[2] == 'o' &&
+         data[3] == 'm' && data[4] == '/')) {
+      size_t offset = dictionary->buckets[Hash(&data[5])];
+      BROTLI_BOOL end = !offset;
+      while (!end) {
+        DictWord w = dictionary->dict_words[offset++];
+        const size_t l = w.len & 0x1F;
+        const size_t n = (size_t)1 << dictionary->words->size_bits_by_length[l];
+        const size_t id = w.idx;
+        end = !!(w.len & 0x80);
+        w.len = (uint8_t)l;
+        if (w.transform == 0 &&
+            IsMatch(dictionary->words, w, &data[5], max_length - 5)) {
+          AddMatch(id + (data[0] == ' ' ? 41 : 72) * n, l + 5, l, matches);
+          has_found_match = BROTLI_TRUE;
+          if (l + 5 < max_length) {
+            const uint8_t* s = &data[l + 5];
+            if (data[0] == ' ') {
+              if (l + 8 < max_length &&
+                  s[0] == ' ' && s[1] == 'o' && s[2] == 'f' && s[3] == ' ') {
+                AddMatch(id + 62 * n, l + 9, l, matches);
+                if (l + 12 < max_length &&
+                    s[4] == 't' && s[5] == 'h' && s[6] == 'e' && s[7] == ' ') {
+                  AddMatch(id + 73 * n, l + 13, l, matches);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  return has_found_match;
+}
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}  /* extern "C" */
+#endif