stripansi.c File Reference

removes ansi escape sequences beginning with "\033["" and ending in "m" or "K" More...

#include <cm.h>
#include <stdio.h>

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Functions
int	main (int argc, char *argv[])

Detailed Description

removes ansi escape sequences beginning with "\033["" and ending in "m" or "K"

Author

Bill Waller Copyright (c) 2025 MIT License billx.nosp@m.wall.nosp@m.er@gm.nosp@m.ail..nosp@m.com

Date

2026-02-09

Definition in file stripansi.c.

Function Documentation

main()

int main	(	int	argc,
		char *	argv[] )

C function - strip_ansi(out_str, in_str)

This function iterates through the input string, copying characters to the output buffer while skipping over any ANSI escape sequences. It looks for sequences that start with "\033[" and end with "m" or "K", and removes them from the output.

Parameters

argc	Argument count (should be 2 for the program name and input file)
argv	Argument vector (argv[1] should be the input file name)

ANSI escape sequences start with "\033[" and end with "m" or "K". This function removes those sequences from the input string and writes the cleaned string to stdout

< Buffer to hold the input string read from the file

< Buffer to hold the cleaned output string

Definition at line 24 of file stripansi.c.

                                 {
    char
        in_buf[2048]; 
    char out_buf[2048]; 
    if (argc != 2) {
        fprintf(stderr, "Usage: %s [file_with_ansi_codes]\n", argv[0]);
        return 1;
    }
    FILE *in_fp = fopen(argv[1], "r");
    if (!in_fp) {
        perror("Error opening file");
        return 1;
    }
    while (fgets(in_buf, sizeof(in_buf), in_fp)) {
        strip_ansi(out_buf, in_buf);
        fputs(out_buf, stdout);
    }
    fclose(in_fp);
    return 0;
}

References strip_ansi().

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