c_cpp 在C中展示Perl的chomp功能

Posted 2021-05-14

#include <stdbool.h>
#include <stdio.h>
#include <string.h>

/**
 * Truncate string at first newline, if exists, returning true on chomp; false, if no chomp.
 */
bool chomp(char *line) {
    // https://stackoverflow.com/a/3217634/155167
    bool success = false;
    char *c = strchr(line, '\n');
    
    if (c != NULL) {
        // Subtract the address of the newline from the string's address!
        int index = (int)(c - line);
        line[index] = '\0';
        success = true;
    }
    
    return success;
}