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我有兩個操作「插入字節」的工作,基本上都是相同的:使得無論「插入字節」和「刪除字節」通過與正/負偏移
insert_bytes(from, count)
delete_bytes(start, stop) -> delete_bytes(from, count)
insert_bytes實現示例:
unsigned char* new_bytes = (unsigned char*)malloc((old_length+count)*sizeof(unsigned char));
memcpy(new_bytes, old_bytes, from); // negative value can't go to from here
memcpy(new_bytes+count, old_bytes+from, old_length-from);
return new_bytes+from; // pointer to write
是否有任何安全的方式來實現delete_bytes作爲insert_bytes(帶有負偏移)的調用而不寫5-6行正負值檢查?
current_size可從外面,並計劃在C++中也使用..好吧,謝謝你提醒這個東西..感覺更清晰:) – 2011-01-31 02:22:20