relocation.h File Reference

#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/limits.h>
#include <unistd.h>

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Macros
#define	REPLACE_TRUNCATE_AFTER_MATCH   1

Functions
int	replace_text (char *original, const char *target, const char *replacement, unsigned flags)
int	file_replace_text (const char *filename, const char *target, const char *replacement, unsigned flags)

Function Documentation

file_replace_text()

int file_replace_text	(	const char *	filename,
		const char *	target,
		const char *	replacement,
		unsigned	flags )

Replace target with replacement in filename

if (file_replace_text("/path/to/file.txt", "are", "is")) {
    fprintf(stderr, "failed to replace strings in file\n");
    exit(1);
}

Parameters

filename	path to file
target	string value to replace
replacement	string
flags	REPLACE_TRUNCATE_AFTER_MATCH

Returns

0 on success, -1 on error

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replace_text()

int replace_text	(	char *	original,
		const char *	target,
		const char *	replacement,
		unsigned	flags )

Replace all occurrences of target with replacement in original

size_t str_maxlen = 100;
char *str = calloc(str_maxlen, sizeof(char));
strncpy(str, "This are a test.", str_maxlen - 1);
if (replace_text(str, "are", "is")) {
    fprintf(stderr, "string replacement failed\n");
    exit(1);
}
// str is: "This is a test."
free(str);

Parameters

original	string to modify
target	string value to replace
replacement	string value
flags	REPLACE_TRUNCATE_AFTER_MATCH

Returns

0 on success, -1 on error