https://github.com/0xromjobert/get_next_line
get_next_line is a 42 school project designed to read from a file descriptor and learn to use static variables
https://github.com/0xromjobert/get_next_line
c linked-list static-variables
Last synced: 25 days ago
JSON representation
get_next_line is a 42 school project designed to read from a file descriptor and learn to use static variables
- Host: GitHub
- URL: https://github.com/0xromjobert/get_next_line
- Owner: 0xromjobert
- Created: 2023-05-31T19:43:38.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2023-08-16T18:41:34.000Z (over 1 year ago)
- Last Synced: 2025-03-31T18:46:55.612Z (about 1 month ago)
- Topics: c, linked-list, static-variables
- Language: C
- Homepage:
- Size: 3.1 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# get_next_line
This 42 school project is aimed at reading a line from a file descriptor.
If called in a loop, `get_next_line` should return the entire content one line at a time, until the end of the file is reached.
When compiling it, we should be able to modify the buffer size.
## Status
Finished : 14-06-2023.
Grade : 125/100.
## Usage
### compiling Mandatory part
```shell
cc get_next_line.c get_next_line.h get_next_line_utils.c main_for_test/main.c
```
### compiling Bonus part
```shell
cc *_bonus.c main_for_test/main_bonus.c
```
`BUFFER_SIZE` can be changed at compilation using the command `-D BUFFER_SIZE`. For instance to read byte-by-byte:
```shell
cc -D BUFFER_SIZE=1 get_next_line.c get_next_line.h get_next_line_utils.c main_for_test/main.c
```
### Execution
To test with a file : `./a.out` to execute.
Otherwise in case of manual input test, you will need to use `main_manual_input.c` execute with `./a.out /dev/tty`
and then entire your text - stop at any moment with `ctrc + c`
## Example of test result expected
here is result of the bonus expected : one line from each fd at a time.
## Explanation of the program
We are using linked lists as a static variable to read each `buffer_size` number of bytes from the file (mapped by the `fd`) into each node as long as there is text or we encounter a `\n`. we then handle the last node to only keep the characters placed after `\n` that were read in the last buffer.
We then clear the list, make it match the new node with characters after the `\n`, so that next call of `get_next_line()` will build the next linked list on top of the previous call words happenign after the `\n` ... and so on until we reach end of file.
