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<a href=#2 id=2 data-nosnippet>2</a>///
<a href=#3 id=3 data-nosnippet>3</a>/// This module provides high-performance hashing, encoding/decoding,
<a href=#4 id=4 data-nosnippet>4</a>/// compression/decompression, and byte manipulation utilities using
<a href=#5 id=5 data-nosnippet>5</a>/// optimized algorithms and data structures.
<a href=#6 id=6 data-nosnippet>6</a></span><span class="comment">// Standard library imports
<a href=#7 id=7 data-nosnippet>7</a></span><span class="kw">use </span>std::io::{Read, Write};
<a href=#8 id=8 data-nosnippet>8</a>
<a href=#9 id=9 data-nosnippet>9</a><span class="comment">// External crate imports
<a href=#10 id=10 data-nosnippet>10</a></span><span class="kw">use </span>ahash::AHashMap;
<a href=#11 id=11 data-nosnippet>11</a><span class="kw">use </span>base64::{Engine <span class="kw">as _</span>, engine::general_purpose::STANDARD};
<a href=#12 id=12 data-nosnippet>12</a><span class="kw">use </span>brotli::{CompressorWriter, Decompressor};
<a href=#13 id=13 data-nosnippet>13</a><span class="kw">use </span>bytes::Bytes;
<a href=#14 id=14 data-nosnippet>14</a>
<a href=#15 id=15 data-nosnippet>15</a><span class="doccomment">/// Creates a new empty `AHashMap` with the `AHash` hashing algorithm.
<a href=#16 id=16 data-nosnippet>16</a>///
<a href=#17 id=17 data-nosnippet>17</a>/// `AHash` is a high-performance hashing algorithm, often faster than the standard
<a href=#18 id=18 data-nosnippet>18</a>/// library's hasher for hash maps.
<a href=#19 id=19 data-nosnippet>19</a>///
<a href=#20 id=20 data-nosnippet>20</a>/// # Type Parameters
<a href=#21 id=21 data-nosnippet>21</a>/// - `K`: The key type, must implement `Hash` and `Eq`.
<a href=#22 id=22 data-nosnippet>22</a>/// - `V`: The value type.
<a href=#23 id=23 data-nosnippet>23</a>///
<a href=#24 id=24 data-nosnippet>24</a>/// # Returns
<a href=#25 id=25 data-nosnippet>25</a>/// An empty `AHashMap<K, V>`.
<a href=#26 id=26 data-nosnippet>26</a>///
<a href=#27 id=27 data-nosnippet>27</a>/// # Examples
<a href=#28 id=28 data-nosnippet>28</a>/// ```rust
<a href=#29 id=29 data-nosnippet>29</a>/// use trash_analyzer::common::crypto::create_ahash_map;
<a href=#30 id=30 data-nosnippet>30</a>/// use ahash::AHashMap;
<a href=#31 id=31 data-nosnippet>31</a>///
<a href=#32 id=32 data-nosnippet>32</a>/// let mut map: AHashMap<String, i32> = create_ahash_map();
<a href=#33 id=33 data-nosnippet>33</a>/// map.insert("key".to_string(), 42);
<a href=#34 id=34 data-nosnippet>34</a>/// ```
<a href=#35 id=35 data-nosnippet>35</a></span><span class="attr">#[must_use]
<a href=#36 id=36 data-nosnippet>36</a></span><span class="kw">pub fn </span>create_ahash_map<K, V>() -> AHashMap<K, V>
<a href=#37 id=37 data-nosnippet>37</a><span class="kw">where
<a href=#38 id=38 data-nosnippet>38</a> </span>K: std::hash::Hash + Eq,
<a href=#39 id=39 data-nosnippet>39</a>{
<a href=#40 id=40 data-nosnippet>40</a> AHashMap::new()
<a href=#41 id=41 data-nosnippet>41</a>}
<a href=#42 id=42 data-nosnippet>42</a>
<a href=#43 id=43 data-nosnippet>43</a><span class="doccomment">/// Wraps a byte slice into a `Bytes` object for efficient sharing.
<a href=#44 id=44 data-nosnippet>44</a>///
<a href=#45 id=45 data-nosnippet>45</a>/// This function creates a copy of the data in `Bytes`, which is useful for
<a href=#46 id=46 data-nosnippet>46</a>/// zero-copy operations in async contexts.
<a href=#47 id=47 data-nosnippet>47</a>///
<a href=#48 id=48 data-nosnippet>48</a>/// # Parameters
<a href=#49 id=49 data-nosnippet>49</a>/// - `data`: The byte slice to wrap.
<a href=#50 id=50 data-nosnippet>50</a>///
<a href=#51 id=51 data-nosnippet>51</a>/// # Returns
<a href=#52 id=52 data-nosnippet>52</a>/// A `Bytes` object containing a copy of the input data.
<a href=#53 id=53 data-nosnippet>53</a>///
<a href=#54 id=54 data-nosnippet>54</a>/// # Examples
<a href=#55 id=55 data-nosnippet>55</a>/// ```rust
<a href=#56 id=56 data-nosnippet>56</a>/// use trash_analyzer::common::crypto::wrap_bytes;
<a href=#57 id=57 data-nosnippet>57</a>/// use bytes::Bytes;
<a href=#58 id=58 data-nosnippet>58</a>///
<a href=#59 id=59 data-nosnippet>59</a>/// let data = b"Hello, world!";
<a href=#60 id=60 data-nosnippet>60</a>/// let bytes = wrap_bytes(data);
<a href=#61 id=61 data-nosnippet>61</a>/// assert_eq!(bytes.as_ref(), data);
<a href=#62 id=62 data-nosnippet>62</a>/// ```
<a href=#63 id=63 data-nosnippet>63</a></span><span class="attr">#[must_use]
<a href=#64 id=64 data-nosnippet>64</a></span><span class="kw">pub fn </span>wrap_bytes(data: <span class="kw-2">&</span>[u8]) -> Bytes {
<a href=#65 id=65 data-nosnippet>65</a> Bytes::copy_from_slice(data)
<a href=#66 id=66 data-nosnippet>66</a>}
<a href=#67 id=67 data-nosnippet>67</a>
<a href=#68 id=68 data-nosnippet>68</a><span class="doccomment">/// Encodes binary data to a Base64 string.
<a href=#69 id=69 data-nosnippet>69</a>///
<a href=#70 id=70 data-nosnippet>70</a>/// This function uses the standard Base64 encoding without padding.
<a href=#71 id=71 data-nosnippet>71</a>///
<a href=#72 id=72 data-nosnippet>72</a>/// # Parameters
<a href=#73 id=73 data-nosnippet>73</a>/// - `data`: The byte slice to encode.
<a href=#74 id=74 data-nosnippet>74</a>///
<a href=#75 id=75 data-nosnippet>75</a>/// # Returns
<a href=#76 id=76 data-nosnippet>76</a>/// A `String` containing the Base64-encoded data.
<a href=#77 id=77 data-nosnippet>77</a>///
<a href=#78 id=78 data-nosnippet>78</a>/// # Examples
<a href=#79 id=79 data-nosnippet>79</a>/// ```rust
<a href=#80 id=80 data-nosnippet>80</a>/// use trash_analyzer::common::crypto::encode_base64;
<a href=#81 id=81 data-nosnippet>81</a>///
<a href=#82 id=82 data-nosnippet>82</a>/// let data = b"Hello, world!";
<a href=#83 id=83 data-nosnippet>83</a>/// let encoded = encode_base64(data);
<a href=#84 id=84 data-nosnippet>84</a>/// println!("Encoded: {}", encoded);
<a href=#85 id=85 data-nosnippet>85</a>/// ```
<a href=#86 id=86 data-nosnippet>86</a></span><span class="attr">#[must_use]
<a href=#87 id=87 data-nosnippet>87</a></span><span class="kw">pub fn </span>encode_base64(data: <span class="kw-2">&</span>[u8]) -> String {
<a href=#88 id=88 data-nosnippet>88</a> STANDARD.encode(data)
<a href=#89 id=89 data-nosnippet>89</a>}
<a href=#90 id=90 data-nosnippet>90</a>
<a href=#91 id=91 data-nosnippet>91</a><span class="doccomment">/// Decodes a Base64 string to binary data.
<a href=#92 id=92 data-nosnippet>92</a>///
<a href=#93 id=93 data-nosnippet>93</a>/// This function decodes standard Base64 without padding.
<a href=#94 id=94 data-nosnippet>94</a>///
<a href=#95 id=95 data-nosnippet>95</a>/// # Parameters
<a href=#96 id=96 data-nosnippet>96</a>/// - `data`: The Base64-encoded string to decode.
<a href=#97 id=97 data-nosnippet>97</a>///
<a href=#98 id=98 data-nosnippet>98</a>/// # Returns
<a href=#99 id=99 data-nosnippet>99</a>/// - `Ok(Vec<u8>)` containing the decoded bytes if successful.
<a href=#100 id=100 data-nosnippet>100</a>/// - `Err(base64::DecodeError)` if decoding fails (e.g., invalid Base64).
<a href=#101 id=101 data-nosnippet>101</a>///
<a href=#102 id=102 data-nosnippet>102</a>/// # Errors
<a href=#103 id=103 data-nosnippet>103</a>///
<a href=#104 id=104 data-nosnippet>104</a>/// Returns a `base64::DecodeError` if the input is not valid base64.
<a href=#105 id=105 data-nosnippet>105</a>///
<a href=#106 id=106 data-nosnippet>106</a>/// # Examples
<a href=#107 id=107 data-nosnippet>107</a>/// ```rust
<a href=#108 id=108 data-nosnippet>108</a>/// use trash_analyzer::common::crypto::{encode_base64, decode_base64};
<a href=#109 id=109 data-nosnippet>109</a>///
<a href=#110 id=110 data-nosnippet>110</a>/// let data = b"Hello, world!";
<a href=#111 id=111 data-nosnippet>111</a>/// let encoded = encode_base64(data);
<a href=#112 id=112 data-nosnippet>112</a>/// let decoded = decode_base64(&encoded).unwrap();
<a href=#113 id=113 data-nosnippet>113</a>/// assert_eq!(decoded, data);
<a href=#114 id=114 data-nosnippet>114</a>/// ```
<a href=#115 id=115 data-nosnippet>115</a></span><span class="kw">pub fn </span>decode_base64(data: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Vec<u8>, base64::DecodeError> {
<a href=#116 id=116 data-nosnippet>116</a> STANDARD.decode(data)
<a href=#117 id=117 data-nosnippet>117</a>}
<a href=#118 id=118 data-nosnippet>118</a>
<a href=#119 id=119 data-nosnippet>119</a><span class="doccomment">/// Compress data using Brotli
<a href=#120 id=120 data-nosnippet>120</a>///
<a href=#121 id=121 data-nosnippet>121</a>/// # Errors
<a href=#122 id=122 data-nosnippet>122</a>///
<a href=#123 id=123 data-nosnippet>123</a>/// Returns an `std::io::Error` if compression fails.
<a href=#124 id=124 data-nosnippet>124</a></span><span class="kw">pub fn </span>compress_brotli(data: <span class="kw-2">&</span>[u8], level: u32) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#125 id=125 data-nosnippet>125</a> <span class="kw">let </span><span class="kw-2">mut </span>output = Vec::new();
<a href=#126 id=126 data-nosnippet>126</a> {
<a href=#127 id=127 data-nosnippet>127</a> <span class="kw">let </span><span class="kw-2">mut </span>compressor = CompressorWriter::new(<span class="kw-2">&mut </span>output, <span class="number">4096</span>, level, level);
<a href=#128 id=128 data-nosnippet>128</a> compressor.write_all(data)<span class="question-mark">?</span>;
<a href=#129 id=129 data-nosnippet>129</a> compressor.flush()<span class="question-mark">?</span>;
<a href=#130 id=130 data-nosnippet>130</a> }
<a href=#131 id=131 data-nosnippet>131</a> <span class="prelude-val">Ok</span>(output)
<a href=#132 id=132 data-nosnippet>132</a>}
<a href=#133 id=133 data-nosnippet>133</a>
<a href=#134 id=134 data-nosnippet>134</a><span class="doccomment">/// Decompress Brotli data
<a href=#135 id=135 data-nosnippet>135</a>///
<a href=#136 id=136 data-nosnippet>136</a>/// # Errors
<a href=#137 id=137 data-nosnippet>137</a>///
<a href=#138 id=138 data-nosnippet>138</a>/// Returns an `std::io::Error` if decompression fails.
<a href=#139 id=139 data-nosnippet>139</a></span><span class="kw">pub fn </span>decompress_brotli(data: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#140 id=140 data-nosnippet>140</a> <span class="kw">let </span><span class="kw-2">mut </span>decompressor = Decompressor::new(data, <span class="number">4096</span>);
<a href=#141 id=141 data-nosnippet>141</a> <span class="kw">let </span><span class="kw-2">mut </span>output = Vec::new();
<a href=#142 id=142 data-nosnippet>142</a> decompressor.read_to_end(<span class="kw-2">&mut </span>output)<span class="question-mark">?</span>;
<a href=#143 id=143 data-nosnippet>143</a> <span class="prelude-val">Ok</span>(output)
<a href=#144 id=144 data-nosnippet>144</a>}
<a href=#145 id=145 data-nosnippet>145</a>
<a href=#146 id=146 data-nosnippet>146</a><span class="doccomment">/// Compute fast hash of data using ahash
<a href=#147 id=147 data-nosnippet>147</a></span><span class="attr">#[must_use]
<a href=#148 id=148 data-nosnippet>148</a></span><span class="kw">pub fn </span>fast_hash(data: <span class="kw-2">&</span>[u8]) -> u64 {
<a href=#149 id=149 data-nosnippet>149</a> <span class="kw">use </span>ahash::AHasher;
<a href=#150 id=150 data-nosnippet>150</a> <span class="kw">use </span>std::hash::Hasher;
<a href=#151 id=151 data-nosnippet>151</a> <span class="kw">let </span><span class="kw-2">mut </span>hasher = AHasher::default();
<a href=#152 id=152 data-nosnippet>152</a> hasher.write(data);
<a href=#153 id=153 data-nosnippet>153</a> hasher.finish()
<a href=#154 id=154 data-nosnippet>154</a>}
<a href=#155 id=155 data-nosnippet>155</a>
<a href=#156 id=156 data-nosnippet>156</a><span class="doccomment">/// Compute fast hash of data with key using ahash
<a href=#157 id=157 data-nosnippet>157</a></span><span class="attr">#[must_use]
<a href=#158 id=158 data-nosnippet>158</a></span><span class="kw">pub fn </span>keyed_hash(key: <span class="kw-2">&</span>[u8], data: <span class="kw-2">&</span>[u8]) -> u64 {
<a href=#159 id=159 data-nosnippet>159</a> <span class="kw">use </span>ahash::AHasher;
<a href=#160 id=160 data-nosnippet>160</a> <span class="kw">use </span>std::hash::Hasher;
<a href=#161 id=161 data-nosnippet>161</a> <span class="kw">let </span><span class="kw-2">mut </span>hasher = AHasher::default();
<a href=#162 id=162 data-nosnippet>162</a> hasher.write(key);
<a href=#163 id=163 data-nosnippet>163</a> hasher.write(data);
<a href=#164 id=164 data-nosnippet>164</a> hasher.finish()
<a href=#165 id=165 data-nosnippet>165</a>}
<a href=#166 id=166 data-nosnippet>166</a>
<a href=#167 id=167 data-nosnippet>167</a><span class="doccomment">/// Verify keyed hash
<a href=#168 id=168 data-nosnippet>168</a></span><span class="attr">#[must_use]
<a href=#169 id=169 data-nosnippet>169</a></span><span class="kw">pub fn </span>verify_keyed_hash(key: <span class="kw-2">&</span>[u8], data: <span class="kw-2">&</span>[u8], expected: u64) -> bool {
<a href=#170 id=170 data-nosnippet>170</a> keyed_hash(key, data) == expected
<a href=#171 id=171 data-nosnippet>171</a>}</code></pre></div></section></main></body></html>