/**
 * Nullprompt is a fast, pretty, and basic PS1 prompt program
 * Copyright (C) 2024  Aaron Ball, nullspoon at oper dot io
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "common.h"

void rtrim(char* buf) {
  char* c = &buf[0];
  while(*c != 0) // Find the end
    c++;
  while(*c == ' ' || *c == '\t' || *c == '\n' || *c == 0) // Back it up
    c--;
  *(c+1) = 0; // null terminate
}

// Ellipses a string to the specified length
void ellipt(char* buf, char* outbuf, int size) {
  int buflen = strlen(buf);

  // Clear the out buffer
  memset(outbuf, 0, size);

  if(buflen < size) {
    strcpy(outbuf, buf);
    return;
  }

  // Copy in the front with the ellipse
  strncpy(outbuf, buf, (size/2)-3);
  strcat(outbuf, "...");
  // Copy in the back end
  // NOTE: Extra +1 for rounding errors to prevent buffer overflows
  strcpy(&outbuf[(size/2)], &buf[buflen - (size/2) +1]);
}