string replacement in files
I'm slowly rewriting my website generator in C and for it I required an easy way to write an input file to an output file replacing every instance of something with another string. So I made this convenience function that might be useful elsewhere one day.
int replaceinfile(char *originalfile, char *destinationfile, char *placeholder, char *replacement); // 0 = failure, 1 = success replaceinfile("input.txt", "output.txt", "%PLACEHOLDER%", "replacement string");input.txt
Normal text file %PLACEHOLDER% %PLACEHOLDER% %PLACEHOLDER% With lines and whatever, %PLACEHOLDER% 123%PLACEHOLDER%123 ok %PLACEHOLDER% okoutput.txt
Normal text file replacement string replacement string replacement string With lines and whatever, replacement string 123replacement string123 ok replacement string okThe source is available in my git repository.