Description
FormatParser can be used to figure out the type and the format of a file. It also can extract some additional information.
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README
FormatParser
FormatParser can be used to figure out the type and the format of a file. It also can extract some additional information.
Documentation can be found here.
Inspired heavily by format_parser.
Basic usage
# Image
{:ok, file} = File.read("myimage.png")
match = FormatParser.parse(file)
match.nature #=> :image
match.format #=> :gif
match.width_px #=> 256
match.height_px #=> 256
match.intrinsics[:filter_method] #=> 0
# Video
{:ok, file} = File.read("myvideo.flv")
match = FormatParser.parse(file)
match.nature #=> :video
match.format #=> :flv
# Document
{:ok, file} = File.read("mydocument.rtf")
match = FormatParser.parse(file)
match.nature #=> :document
match.format #=> :rtf
# Audio
{:ok, file} = File.read("myaudio.wav")
match = FormatParser.parse(file)
match.nature #=> :audio
match.format #=> :wav
match.sample_rate_hz #=> 44100
match.num_audio_channels #=> 2
# Font
{:ok, file} = File.read("myfont.ttf")
match = FormatParser.parse(file)
match.nature #=> :font
match.format #=> :ttf
Supported Formats
Audio
| Type | Nature | Format | Sample Rate | # of Channels | Intrinsics |
|---|---|---|---|---|---|
| aiff | x | x | x | num_frames, bits_per_sample | |
| wav | x | x | x | x | byte_rate, block_align, bits_per_sample |
| ogg | x | x | x | x | |
| flac | x | x | x | x |
Video
| Type | Nature | Format |
|---|---|---|
| flv | x | x |
Document
| Type | Nature | Format | Intrinsics |
|---|---|---|---|
| rtf | x | x | |
| x | x | page_count |
Image
| Type | Nature | Format | Width | Height | Intrinsics |
|---|---|---|---|---|---|
| jpg | x | x | |||
| gif | x | x | x | x | |
| ico | x | x | x | x | num_color_palette, color_planes, bits_per_pixel |
| cur | x | x | x | x | num_color_palette, hotspot_horizontal_coords, hotspot_vertical_coords |
| cr2 | x | x | x | x | date_time, model, preview_byte_count, preview_offset |
| nef | x | x | x | x | date_time, model, preview_byte_count, preview_offset |
| tif | x | x | x | x | |
| bmp | x | x | x | x | |
| png | x | x | x | x | bit_depth, color_type, compression_method, crc, filter_method, interlace_method |
| psd | x | x | x | x | |
| jb2 | x | x | |||
| xcf | x | x | |||
| exr | x | x |
Font
| Type | Nature | Format |
|---|---|---|
| ttf | x | x |
| otf | x | x |
| fon | x | x |
Installation
Add the following to your mix.exs file
def deps do
[
{:format_parser, "~> 1.3.0"}
]
end
And run mix deps.get
Contribute
Please feel free to fork and send us a PR or open up an issue.