Function nom_exif::parse_jpeg_exif

pub fn parse_jpeg_exif<R: Read>(reader: R) -> Result<Option<Exif>>

Analyze the byte stream in the reader as a JPEG file, attempting to extract Exif data it may contain.

Please note that the parsing routine itself provides a buffer, so the reader may not need to be wrapped with BufRead.

Usage

use nom_exif::*;
use nom_exif::ExifTag::*;

use std::fs::File;
use std::path::Path;

let f = File::open(Path::new("./testdata/exif.jpg")).unwrap();
let exif = parse_jpeg_exif(f).unwrap().unwrap();

assert_eq!(exif.get_value(&Make).unwrap().unwrap().to_string(), "vivo");

assert_eq!(
    exif.get_values(&[DateTimeOriginal, CreateDate, ModifyDate])
        .into_iter()
        .map(|x| (x.0.to_string(), x.1.to_string()))
        .collect::<Vec<_>>(),
    [
        ("DateTimeOriginal(0x9003)", "2023-07-09T20:36:33+08:00"),
        ("CreateDate(0x9004)", "2023-07-09T20:36:33+08:00"),
        ("ModifyDate(0x0132)", "2023-07-09T20:36:33+08:00")
    ]
    .into_iter()
    .map(|x| (x.0.to_string(), x.1.to_string()))
    .collect::<Vec<_>>()
);