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/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <Foundation/Foundation.h>
#include "SkOSFile.h"
#include "SkString.h"
struct SkFILE {
NSData* fData;
size_t fOffset;
size_t fLength;
};
SkFILE* sk_fopen(const char cpath[], SkFILE_Flags flags) {
if (flags & kWrite_SkFILE_Flag) {
return NULL;
}
SkString cname, csuffix;
const char* start = strrchr(cpath, '/');
if (NULL == start) {
start = cpath;
} else {
start += 1;
}
const char* stop = strrchr(cpath, '.');
if (NULL == stop) {
return NULL;
} else {
stop += 1;
}
cname.set(start, stop - start - 1);
csuffix.set(stop);
NSBundle* bundle = [NSBundle mainBundle];
NSString* name = [NSString stringWithUTF8String:cname.c_str()];
NSString* suffix = [NSString stringWithUTF8String:csuffix.c_str()];
NSString* path = [bundle pathForResource:name ofType:suffix];
NSData* data = [NSData dataWithContentsOfMappedFile:path];
if (data) {
[data retain];
SkFILE* rec = new SkFILE;
rec->fData = data;
rec->fOffset = 0;
rec->fLength = [data length];
return reinterpret_cast<SkFILE*>(rec);
}
return NULL;
}
size_t sk_fgetsize(SkFILE* rec) {
SkASSERT(rec);
return rec->fLength;
}
bool sk_frewind(SkFILE* rec) {
SkASSERT(rec);
rec->fOffset = 0;
return true;
}
size_t sk_fread(void* buffer, size_t byteCount, SkFILE* rec) {
if (NULL == buffer) {
return rec->fLength;
} else {
size_t remaining = rec->fLength - rec->fOffset;
if (byteCount > remaining) {
byteCount = remaining;
}
memcpy(buffer, (char*)[rec->fData bytes] + rec->fOffset, byteCount);
rec->fOffset += byteCount;
SkASSERT(rec->fOffset <= rec->fLength);
return byteCount;
}
}
size_t sk_fwrite(const void* buffer, size_t byteCount, SkFILE* f) {
SkASSERT(!"Not supported yet");
return 0;
}
void sk_fflush(SkFILE* f) {
SkASSERT(!"Not supported yet");
}
void sk_fclose(SkFILE* rec) {
SkASSERT(rec);
[rec->fData release];
delete rec;
}
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