Part 1: split a large file into fixed-size pieces and re-join them
As common file/database size is getting much larger these days, it is handy to be able to break them into small pieces for the purpose of storage or internet transfer, and then to heal them back together to the original form whenever needed. For this homework assignment, we will build such tools (also to apply what you might have learned from ecs36a) --
(Programs) myHeal and myBreak are two utility programs for separating a giant file into smaller-sized chunks and re-assembling the chunks back to their original.
myBreak: the myBreak program will separate the source file, typically very large file size, into fixed-size chunks (for example, 1 MB a piece). You have the freedom to design how you like to separate them (of course, your own myHeal program will put them back correctly), but the program must take the following arguments:
usage: ./myBreak <source> <prefix> <chunk size (K)>
Here is an example è
(base) MBP:myBreakHeal sfwu$ ls -l toID_sorted_Lall_LIS.xls
-rw-r--r-- 1 sfwu staff 710779752 Sep 30 12:15 toID_sorted_Lall_LIS.xls
(base) MBP:myBreakHeal sfwu$ ./myBreak toID_sorted_Lall_LIS.xls myPrefix 65536
starting myPrefix.00000000000000000000000000000000
starting myPrefix.00000000000000000000000000000001
starting myPrefix.00000000000000000000000000000002
starting myPrefix.00000000000000000000000000000003
starting myPrefix.00000000000000000000000000000004
starting myPrefix.00000000000000000000000000000005
starting myPrefix.00000000000000000000000000000006
starting myPrefix.00000000000000000000000000000007
starting myPrefix.00000000000000000000000000000008
starting myPrefix.00000000000000000000000000000009
starting myPrefix.00000000000000000000000000000010
done... [11] chunks produced for toID_sorted_Lall_LIS.xls
While you can design and implement your own version of myBreak program, the source code of a reference implementation of myBreak.c will be provided.
myHeal: the myHeal program will re-generate the original file broken by the myBreak program. For error handling, the program needs to detect if any chunk is missing and also the chunk size of incorrect.
Here is the example è
