Function textaux_CopyTextLine

grtext/textaux.cpp:125–156

textaux_CopyTextLine This function goes hand-in-hand with textaux_WordWrap(). Given a buffer of data it will fill in the dest buffer until it hits a /n or /0. It returns a pointer to the start position of the next line, or NULL if it's done with the buffer (it hit a /0).

//	the dest buffer until it hits a /n or /0.  It returns a pointer to the start position of the next line,
//  or NULL if it's done with the buffer (it hit a /0).
const char *textaux_CopyTextLine(const char *src, char *dest) {
  // make sure src and dest are allocated
  if (!src) {
    if (dest)
      dest[0] = '\0';
    return nullptr;
  }
  if (!dest)
    return nullptr;
  // see if we are at the end of the src
  if (src[0] == '\0') {
    dest[0] = '\0';
    return nullptr;
  }
  int i;
  i = 0;
  // find the end
  while ((src[i] != '\n') && (src[i] != '\0'))
    i++;
  if (src[i] == '\0') {
    // no more lines left after this
    strncpy(dest, src, i);
    dest[i] = '\0';
    return nullptr;
  } else {
    // we hit a newline char
    strncpy(dest, src, i);
    dest[i] = '\0';
    i++;
    return &src[i];
  }
}

//	textaux_ClipString
//	   Given a width (in pixels), and a string, this function will truncate the string