mirror of
https://github.com/OpenDiablo2/OpenDiablo2
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50d40fb5d3
* adding logger implementation to d2common
* Adding file loader implementation
The file loader works in terms of `Sources` and `Assets`. A `Source` is
something like a filesystem that has a cache. An `Asset` is something
that implements `io.ReadSeeker` and has a few methods of its own.
There are currently `Source` implementations for MPQ archives and for the
host filesystem, meaning that one can specify a directory on the host fs to
load files from.
`Sources` are added to a loader with `loader.AddSource(path)`, where `path`
resolves somewhere on disk. In the case that the path points to an MPQ,
then an MPQ `Source` is created and added to the loader. If `path` resolves
to a directory, then a filesystem source is added.
Files are loaded with `loader.Load("data/global/excel/monstats.txt")`, and the
sources are searched in the order that they were added.
* adding tests for d2common/logger_test.go
* adding tests and testdata for d2loader
* logger lint fixes, fixed missing test case
* minor edits, lint fixes, changes some comments, embedded Logger into Loader
* moved d2loader into d2common (I dont think it belonged in d2core)
* removed my simple cache implementation in favor of our existing cache in d2common
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package mpq
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import (
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2fileformats/d2mpq"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2loader/asset"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2loader/asset/types"
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)
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// static check that Source implements AssetSource
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var _ asset.Source = &Source{}
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// NewSource creates a new MPQ Source
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func NewSource(sourcePath string) (asset.Source, error) {
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loaded, err := d2mpq.Load(sourcePath)
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if err != nil {
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return nil, err
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}
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return &Source{loaded}, nil
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}
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// Source is an implementation of an asset source for MPQ archives
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type Source struct {
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MPQ d2interface.Archive
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}
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// Type returns the asset type, for MPQ's it always returns the MPQ asset source type
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func (v *Source) Type() types.SourceType {
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return types.AssetSourceMPQ
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}
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// Open attempts to open a file within the MPQ archive
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func (v *Source) Open(name string) (a asset.Asset, err error) {
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stream, err := v.MPQ.ReadFileStream(name)
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if err != nil {
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return nil, err
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}
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a = &Asset{
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source: v,
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stream: stream,
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}
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return a, nil
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}
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// String returns the path of the MPQ on the host filesystem
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func (v *Source) String() string {
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return v.MPQ.Path()
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}
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