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/* libs/graphics/ports/SkOSFile_stdio.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "SkOSFile.h"
#include <stdio.h>
#include <errno.h>
SkFILE* sk_fopen(const char path[], SkFILE_Flags flags)
{
char perm[4];
char* p = perm;
if (flags & kRead_SkFILE_Flag)
*p++ = 'r';
if (flags & kWrite_SkFILE_Flag)
*p++ = 'w';
*p++ = 'b';
*p = 0;
SkFILE* f = (SkFILE*)::fopen(path, perm);
#if 0
if (NULL == f)
SkDebugf("sk_fopen failed for %s (%s), errno=%s\n", path, perm, strerror(errno));
#endif
return f;
}
size_t sk_fgetsize(SkFILE* f)
{
SkASSERT(f);
size_t curr = ::ftell((FILE*)f); // remember where we are
::fseek((FILE*)f, 0, SEEK_END); // go to the end
size_t size = ::ftell((FILE*)f); // record the size
::fseek((FILE*)f, (long)curr, SEEK_SET); // go back to our prev loc
return size;
}
bool sk_frewind(SkFILE* f)
{
SkASSERT(f);
::rewind((FILE*)f);
// ::fseek((FILE*)f, 0, SEEK_SET);
return true;
}
size_t sk_fread(void* buffer, size_t byteCount, SkFILE* f)
{
SkASSERT(f);
if (buffer == NULL)
{
size_t curr = ::ftell((FILE*)f);
if ((long)curr == -1) {
SkDEBUGF(("sk_fread: ftell(%p) returned -1 feof:%d ferror:%d\n", f, feof((FILE*)f), ferror((FILE*)f)));
return 0;
}
// ::fseek((FILE*)f, (long)(curr + byteCount), SEEK_SET);
int err = ::fseek((FILE*)f, (long)byteCount, SEEK_CUR);
if (err != 0) {
SkDEBUGF(("sk_fread: fseek(%d) tell:%d failed with feof:%d ferror:%d returned:%d\n",
byteCount, curr, feof((FILE*)f), ferror((FILE*)f), err));
return 0;
}
return byteCount;
}
else
return ::fread(buffer, 1, byteCount, (FILE*)f);
}
size_t sk_fwrite(const void* buffer, size_t byteCount, SkFILE* f)
{
SkASSERT(f);
return ::fwrite(buffer, 1, byteCount, (FILE*)f);
}
void sk_fflush(SkFILE* f)
{
SkASSERT(f);
::fflush((FILE*)f);
}
void sk_fclose(SkFILE* f)
{
SkASSERT(f);
::fclose((FILE*)f);
}
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