mirror of https://github.com/opa334/TrollStore.git
60 lines
2.6 KiB
C
60 lines
2.6 KiB
C
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#ifndef MEMORY_STREAM_H
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#define MEMORY_STREAM_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdbool.h>
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#define MEMORY_STREAM_FLAG_OWNS_DATA (1 << 0)
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#define MEMORY_STREAM_FLAG_MUTABLE (1 << 1)
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#define MEMORY_STREAM_FLAG_AUTO_EXPAND (1 << 2)
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#define MEMORY_STREAM_SIZE_INVALID (size_t)-1
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// A generic memory IO interface that is used throughout this project
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// Can be backed by anything, just the functions have to be implemented
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typedef struct s_MemoryStream {
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void *context;
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uint32_t flags;
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int (*read)(struct s_MemoryStream *stream, uint64_t offset, size_t size, void *outBuf);
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int (*write)(struct s_MemoryStream *stream, uint64_t offset, size_t size, const void *inBuf);
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int (*getSize)(struct s_MemoryStream *stream, size_t *sizeOut);
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uint8_t *(*getRawPtr)(struct s_MemoryStream *stream);
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int (*trim)(struct s_MemoryStream *stream, size_t trimAtStart, size_t trimAtEnd);
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int (*expand)(struct s_MemoryStream *stream, size_t expandAtStart, size_t expandAtEnd);
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struct s_MemoryStream *(*hardclone)(struct s_MemoryStream *stream);
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struct s_MemoryStream *(*softclone)(struct s_MemoryStream *stream);
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void (*free)(struct s_MemoryStream *stream);
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} MemoryStream;
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int memory_stream_read(MemoryStream *stream, uint64_t offset, size_t size, void *outBuf);
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int memory_stream_write(MemoryStream *stream, uint64_t offset, size_t size, const void *inBuf);
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int memory_stream_insert(MemoryStream *stream, uint64_t offset, size_t size, const void *inBuf);
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int memory_stream_delete(MemoryStream *stream, uint64_t offset, size_t size);
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int memory_stream_read_string(MemoryStream *stream, uint64_t offset, char **outString);
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int memory_stream_write_string(MemoryStream *stream, uint64_t offset, const char *string);
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size_t memory_stream_get_size(MemoryStream *stream);
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uint8_t *memory_stream_get_raw_pointer(MemoryStream *stream);
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uint32_t memory_stream_get_flags(MemoryStream *stream);
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MemoryStream *memory_stream_softclone(MemoryStream *stream);
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MemoryStream *memory_stream_hardclone(MemoryStream *stream);
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int memory_stream_trim(MemoryStream *stream, size_t trimAtStart, size_t trimAtEnd);
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int memory_stream_expand(MemoryStream *stream, size_t expandAtStart, size_t expandAtEnd);
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void memory_stream_free(MemoryStream *stream);
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int memory_stream_copy_data(MemoryStream *originStream, uint64_t originOffset, MemoryStream *targetStream, uint64_t targetOffset, size_t size);
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int memory_stream_find_memory(MemoryStream *stream, uint64_t searchOffset, size_t searchSize, void *bytes, void *mask, size_t nbytes, uint16_t alignment, uint64_t *foundOffsetOut);
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#endif // MEMORY_STREAM_H
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