gtfs/internal/zip

ZIP File Handling

Provides ZIP archive extraction using Erlang’s :zlib module. Used to load GTFS feeds from ZIP archives.

Types

ZipArchive

opaque </>

Represents a ZIP archive

pub opaque type ZipArchive

ZipError

</>

Errors that can occur during ZIP operations

pub type ZipError {
  FileNotFound(filename: String)
  CorruptedArchive(reason: String)
  IoError(reason: String)
  DecompressionError(reason: String)
}

Constructors

```
FileNotFound(filename: String)
```
File not found in archive
```
CorruptedArchive(reason: String)
```
Archive is corrupted or invalid
```
IoError(reason: String)
```
I/O error reading archive
```
DecompressionError(reason: String)
```
Decompression error

Values

extract_bytes

</>

pub fn extract_bytes(
  archive: ZipArchive,
  filename: String,
) -> Result(BitArray, ZipError)

Extract a file from the archive as bytes

extract_matching

</>

pub fn extract_matching(
  archive: ZipArchive,
  predicate: fn(String) -> Bool,
) -> Result(dict.Dict(String, String), ZipError)

Extract all files matching a predicate

extract_string

</>

pub fn extract_string(
  archive: ZipArchive,
  filename: String,
) -> Result(String, ZipError)

Extract a file from the archive as a string (UTF-8)

file_exists

</>

pub fn file_exists(archive: ZipArchive, filename: String) -> Bool

Check if a file exists in the archive

list_files

</>

pub fn list_files(archive: ZipArchive) -> List(String)

List all files in the archive

open

</>

pub fn open(data: BitArray) -> Result(ZipArchive, ZipError)

Open a ZIP archive from bytes