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removed unused move_lines.c

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bjoernf 2023-09-16 12:39:49 +02:00
parent 0955921918
commit 0773d4f561
3 changed files with 0 additions and 80 deletions
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1
src/main.c
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@ -3,7 +3,6 @@
#include "cli_arg_parsing.h"
#include "date_time_handling.h"
#include "string_handling.h"
#include "move_lines.h"
#include "read_until_nl.h"
#include "read_until_string.h"
#include "seek_string_a.h"

59
src/move_lines.c
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@ -1,59 +0,0 @@
// functions that can move the file position conveniently
// remember that the last line of a file is usually empty and goes from '\n' to EOF
#include "move_lines.h"
#include <unistd.h>
// function to move back/up
void go_back_x_lines(int fd, int lines) {
for (int i = 0; i < lines; i++) {
seek_previous_line(fd);
}
}
void seek_previous_line(int fd) {
seek_line_start(fd);
lseek(fd, -1, SEEK_CUR);
seek_line_start(fd);
}
// set file position to the beginning of the line
void seek_line_start(int fd) {
char cur_char = '\0';
while (cur_char != '\n') {
int ret_lseek = lseek(fd, -1, SEEK_CUR);
if (ret_lseek == -1)
break;
read(fd, &cur_char, 1);
if (cur_char != '\n')
lseek(fd, -1, SEEK_CUR);
}
}
// function to move forward/down
void go_forward_x_lines(int fd, int lines) {
for (int i = 0; i < lines; i++) {
seek_next_line(fd);
}
}
void seek_next_line(int fd) {
seek_line_end(fd);
lseek(fd, 1, SEEK_CUR);
}
// set file position to the end of the line
void seek_line_end(int fd) {
char cur_char = '\0';
while (cur_char != '\n') {
// return code 0 of read indicates EOF
if (read(fd, &cur_char, 1) == 0)
break;
}
lseek(fd, -1, SEEK_CUR);
}

20
src/move_lines.h
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@ -1,20 +0,0 @@
// functions that can move the file position conveniently
// remember that the last line of a file is usually empty and goes from '\n' to EOF
#pragma once
// function to move back/up
void go_back_x_lines(int fd, int lines);
void seek_previous_line(int fd);
// set file position to the beginning of the line
void seek_line_start(int fd);
// function to move forward/down
void go_forward_x_lines(int fd, int lines);
void seek_next_line(int fd);
// set file position to the end of the line
void seek_line_end(int fd);