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Merged
SF-Zhou merged 1 commit into from
Oct 31, 2025
Merged

upgrade to 0.1.3 #9

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2 changes: 1 addition & 1 deletion Cargo.toml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
[package]
name = "massmap"
version = "0.1.2"
version = "0.1.3"
edition = "2024"
authors = ["SF-Zhou <sfzhou.scut@gmail.com>"]
homepage = "https://github.com/SF-Zhou/massmap"
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80 changes: 53 additions & 27 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -65,32 +65,56 @@ cargo install massmap --examples
# 2. convert a JSON file to massmap format
massmap convert -i examples/demo.json -o examples/demo.massmap --bucket-count 32
#> {
#> "file_length": 656,
#> "entry_count": 47,
#> "bucket_count": 32,
#> "occupied_bucket_count": 27,
#> "meta_offset": 486,
#> "meta_length": 170,
#> "hash_seed": 0
#> "header": {
#> "meta_offset": 486,
#> "meta_length": 192
#> },
#> "meta": {
#> "entry_count": 47,
#> "bucket_count": 32,
#> "occupied_bucket_count": 27,
#> "occupied_bucket_range": {
#> "start": 0,
#> "end": 32
#> },
#> "hash_config": {
#> "name": "foldhash",
#> "parameters": {
#> "seed": 0
#> }
#> }
#> }
#> }

# 3. query a key from the massmap file
massmap info examples/demo.massmap -k 1999
#> {
#> "file_length": 656,
#> "entry_count": 47,
#> "bucket_count": 32,
#> "occupied_bucket_count": 27,
#> "meta_offset": 486,
#> "meta_length": 170,
#> "hash_seed": 0
#> "header": {
#> "meta_offset": 486,
#> "meta_length": 192
#> },
#> "meta": {
#> "entry_count": 47,
#> "bucket_count": 32,
#> "occupied_bucket_count": 27,
#> "occupied_bucket_range": {
#> "start": 0,
#> "end": 32
#> },
#> "hash_config": {
#> "name": "foldhash",
#> "parameters": {
#> "seed": 0
#> }
#> }
#> }
#> }
#> 1999: Some(Number(7229))

# 4. view the raw bytes of the massmap file
hexdump -C examples/demo.massmap
#> 00000000 4d 41 53 53 4d 41 50 21 00 00 00 00 00 00 01 e6 |MASSMAP!........|
#> 00000010 00 00 00 00 00 00 00 aa 92 92 a4 31 39 39 34 cd |...........1994.|
#> 00000010 00 00 00 00 00 00 00 c0 92 92 a4 31 39 39 34 cd |...........1994.|
#> 00000020 0f f1 92 a4 32 30 32 30 ce 00 01 18 94 91 92 a4 |....2020........|
#> 00000030 32 30 32 34 ce 00 01 76 05 92 92 a4 31 39 38 39 |2024...v....1989|
#> 00000040 cd 06 00 92 a4 32 30 30 39 cd 66 44 92 92 a4 31 |.....2009.fD...1|
Expand Down Expand Up @@ -119,18 +143,20 @@ hexdump -C examples/demo.massmap
#> 000001b0 e9 91 92 a4 31 39 38 33 cd 02 4c 91 92 a4 31 39 |....1983..L...19|
#> 000001c0 38 32 cd 02 15 92 92 a4 31 39 39 30 cd 06 7f 92 |82......1990....|
#> 000001d0 a4 32 30 31 39 ce 00 01 11 be 91 92 a4 32 30 32 |.2019........202|
#> 000001e0 32 ce 00 01 4e c2 93 2f 00 dc 00 20 93 18 15 02 |2...N../... ....|
#> 000001f0 93 2d 0c 01 93 39 13 02 93 4c 13 02 93 5f 25 04 |.-...9...L..._%.|
#> 00000200 93 cc 84 0a 01 93 cc 8e 1c 03 93 cc aa 13 02 93 |................|
#> 00000210 cc bd 0a 01 93 cc c7 0a 01 93 00 00 00 93 00 00 |................|
#> 00000220 00 93 cc d1 15 02 93 cc e6 13 02 93 00 00 00 93 |................|
#> 00000230 cc f9 25 04 93 cd 01 1e 0a 01 93 cd 01 28 13 02 |..%..........(..|
#> 00000240 93 cd 01 3b 0a 01 93 cd 01 45 13 02 93 00 00 00 |...;.....E......|
#> 00000250 93 cd 01 58 13 02 93 00 00 00 93 cd 01 6b 0c 01 |...X.........k..|
#> 00000260 93 cd 01 77 0a 01 93 cd 01 81 13 02 93 cd 01 94 |...w............|
#> 00000270 13 02 93 cd 01 a7 0a 01 93 cd 01 b1 0a 01 93 cd |................|
#> 00000280 01 bb 0a 01 93 cd 01 c5 15 02 93 cd 01 da 0c 01 |................|
#> 00000290
#> 000001e0 32 ce 00 01 4e c2 92 95 2f 20 1b 92 00 20 92 a8 |2...N.../ ... ..|
#> 000001f0 66 6f 6c 64 68 61 73 68 81 a4 73 65 65 64 00 dc |foldhash..seed..|
#> 00000200 00 20 93 18 15 02 93 2d 0c 01 93 39 13 02 93 4c |. .....-...9...L|
#> 00000210 13 02 93 5f 25 04 93 cc 84 0a 01 93 cc 8e 1c 03 |..._%...........|
#> 00000220 93 cc aa 13 02 93 cc bd 0a 01 93 cc c7 0a 01 93 |................|
#> 00000230 00 00 00 93 00 00 00 93 cc d1 15 02 93 cc e6 13 |................|
#> 00000240 02 93 00 00 00 93 cc f9 25 04 93 cd 01 1e 0a 01 |........%.......|
#> 00000250 93 cd 01 28 13 02 93 cd 01 3b 0a 01 93 cd 01 45 |...(.....;.....E|
#> 00000260 13 02 93 00 00 00 93 cd 01 58 13 02 93 00 00 00 |.........X......|
#> 00000270 93 cd 01 6b 0c 01 93 cd 01 77 0a 01 93 cd 01 81 |...k.....w......|
#> 00000280 13 02 93 cd 01 94 13 02 93 cd 01 a7 0a 01 93 cd |................|
#> 00000290 01 b1 0a 01 93 cd 01 bb 0a 01 93 cd 01 c5 15 02 |................|
#> 000002a0 93 cd 01 da 0c 01 |......|
#> 000002a6
```

## Configuration
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