CODEWITHSUNDEEP
cfile-iofgets
H_squared
H_squared

Reputation: 1271

fgets not reading whole line, no new line character encountered

for some reason fgets reads lines from a file correctly until it reaches a certain line where it just gets part of the line. I checked the file with a Hex editor and there was no new line character in the middle of that line.

File:(pretty large. fgets stops at line 269) 

/mmc_data/add_rootfs
...
/mmc_data/add_rootfs/data/local/sbin/mcast

Here's the line 269 in Hexadecimal representation:

2f 6d 6d 63 5f 64 61 74 61 2f 61 64 64 5f 72 6f 6f 74 66 73 2f 64 61 74 61 2f 6c 6f 63 61 6c 2f 73 62 69 6e 2f 6d 63 61 73 74 0a

I'm just combining fgets with printf:

char cBuffer[1024]="";
while(fgets(cBuffer,1024,fpLog){
printf("%s\n",cBuffer);
}
...

The program outputs everything correctly until it reaches line 269 and it only prints:

/mmc_data/a 
instead of 
/mmc_data/add_rootfs/data/local/sbin/mcast

The 1024 Bytes have clearly not been reached as well as a new line character. So why is fgets stopping at that postion?

Upvotes: 2

Views: 846

Answers (1)

H_squared
H_squared

Reputation: 1271

Solved: I created the file before attempting to access its contents. I did not want to close the file. So the last portion stayed in the buffer and was not written to the file. I solved the issue by using fflush(fpLog) between the writing and the reading

Upvotes: 4

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