41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
#include <c_FileOutputStream.h>
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typedef struct {
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c_OutStream_t base;
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FILE* fp;
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c_Allocator_t allocator;
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} c_FileOutImpl_t;
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static c_err_t _FileOut_Write(c_OutStream_t* self, const void* buf, c_size_t len, c_size_t* written) {
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c_FileOutImpl_t* impl = (c_FileOutImpl_t*)self;
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if (!impl->fp || !buf || len == 0) return C_ERR_PARAM;
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c_size_t items = fwrite(buf, 1, (size_t)len, impl->fp);
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if (written) *written = items;
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return (items == len) ? C_SUCCESS : C_ERR_FAIL;
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}
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static c_err_t _FileOut_Flush(c_OutStream_t* self) {
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c_FileOutImpl_t* impl = (c_FileOutImpl_t*)self;
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return (fflush(impl->fp) == 0) ? C_SUCCESS : C_ERR_FAIL;
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}
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static void _FileOut_Destroy(c_OutStream_t* self) {
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c_FileOutImpl_t* impl = (c_FileOutImpl_t*)self;
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c_Allocator_t alloc = impl->allocator;
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c_Allocator_Free(&alloc, impl);
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}
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static const c_OutStreamVtbl_t g_FileOutVtbl = { _FileOut_Write, _FileOut_Flush, _FileOut_Destroy };
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c_err_t c_FileOutputStream_Create(c_OutStream_t** out_stream, FILE* file_handle, c_Allocator_t* allocator) {
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if (!out_stream || !file_handle) return C_ERR_PARAM;
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c_Allocator_t alloc = allocator ? *allocator : c_DefaultAllocator;
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c_FileOutImpl_t* impl = (c_FileOutImpl_t*)c_Allocator_Calloc(&alloc, 1, sizeof(c_FileOutImpl_t));
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if (!impl) return C_ERR_NOMEM;
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impl->base.vtbl = &g_FileOutVtbl;
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impl->fp = file_handle;
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impl->allocator = alloc;
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*out_stream = &impl->base;
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return C_SUCCESS;
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}
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