Curtis Hard
14f9d44816
Also fixes issue with not finding glyphs due to the root elements not being parsed correctly.
84 lines
1.5 KiB
Objective-C
84 lines
1.5 KiB
Objective-C
//
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// IJSVGCache.m
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// IconJar
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//
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// Created by Curtis Hard on 02/09/2014.
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// Copyright (c) 2014 Curtis Hard. All rights reserved.
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//
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#import "IJSVGCache.h"
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#import <malloc/malloc.h>
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@implementation IJSVGCache
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// 5MB
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#define MAX_CACHE_SIZE 5000000
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static NSCache * _cache = nil;
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static BOOL _enabled = YES;
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+ (void)load
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{
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[self setEnabled:_enabled];
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}
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+ (IJSVG *)cachedSVGForFileURL:(NSURL *)aURL
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{
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if( ![[self class] enabled] || _cache == nil )
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return nil;
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IJSVG * svg = nil;
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if( ( svg = [_cache objectForKey:aURL] ) == nil )
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return nil;
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return svg;
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}
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+ (void)purgeCachedSVGForFileURL:(NSURL *)aURL
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{
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[_cache removeObjectForKey:aURL];
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}
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+ (void)cacheSVG:(IJSVG *)svg
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fileURL:(NSURL *)aURL
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{
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// use the malloc size for the object size,
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// actually bad idea, use the file size
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// is this correct?
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struct stat st;
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long cost = 0;
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if( lstat( [[aURL path] cStringUsingEncoding:NSUTF8StringEncoding], &st ) != -1 )
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cost = st.st_size;
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[_cache setObject:svg
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forKey:aURL
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cost:cost];
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}
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+ (void)setEnabled:(BOOL)flag
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{
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_enabled = flag;
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if( !flag )
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{
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[[self class] flushCache];
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return;
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}
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// create a new cache if allowed
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if( _cache == nil )
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{
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_cache = [[NSCache alloc] init];
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[_cache setTotalCostLimit:MAX_CACHE_SIZE];
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}
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}
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+ (BOOL)enabled
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{
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return _enabled;
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}
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+ (void)flushCache
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{
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[_cache removeAllObjects];
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}
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@end
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