fileshare/src/util.c

/*
 * vim: sw=2 ts=2 expandtab
 *
 * "THE PIZZA-WARE LICENSE" (derived from "THE BEER-WARE LICENCE"):
 * Thomas Kolb <cfr34k@tkolb.de> wrote this file. As long as you retain this
 * notice you can do whatever you want with this stuff. If we meet some day,
 * and you think this stuff is worth it, you can buy me a pizza in return.
 * - Thomas Kolb
 */

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

#include "util.h"

void remove_trailing_slash(char *str) {
  size_t offset = strlen(str)-1;
  if((offset != 0) && (str[offset] == '/')) {
    str[offset] = '\0';
  }
}

void urlencode(const char *str, char *result) {
  uint8_t c;
  while(*str) {
    c = *str;

    if((c >= 'a' && c <= 'z') ||
        (c >= 'A' && c <= 'Z') ||
        (c >= '0' && c <= '9') ||
        c == '-' ||
        c == '_' ||
        c == '!' ||
        c == '(' ||
        c == ')' ||
        c == '$' ||
        c == '*' ||
        c == '\'' ||
        c == ',' ||
        c == '.') {
      // simply print safe characters
      result += sprintf(result, "%c", c);
    } else {
      // encode all others
      result += sprintf(result, "%%%02X", c);
    }

    str++;
  }
}