Function htmlize_expression

tools/kconfig2html.c:557–662

 ****************************************************************************/

static char *htmlize_expression(const char *src)
{
  char varname[VAR_SIZE + 1];
  char htmlvar[HTML_VAR_SIZE + 1];
  char *dest = g_scratch;
  char ch = '\0';
  char lastc;

  /* We may get here with the source pointer equal to NULL.  Return the
   * disfavor.
   */

  if (!src)
    {
      return NULL;
    }

  /* Transfer each character from the source string into the scratch buffer */

  dest  = g_scratch;
  *dest = '\0';

  while (*src)
    {
      /* Remember the last character and advance to the next character */

      lastc = ch;
      ch    = *src;

      /* Skip control characters and out-of-range 7-bit ASCII characters */

      if (*src < 0x20 || *src > 0x7e)
        {
          src++;
          continue;
        }

      /* Output no more than one consecutive space character.  This depends
       * on the fact that kconfig_line has replaces all of the forms of
       * whitespace with a space character.
       */

      if (*src == ' ')
        {
          if (lastc != ' ')
            {
              *dest++ = *src;
              *dest   = '\0';
            }

          src++;
          continue;
        }

      /* Concatenate variable name strings.  There strings probably begin
       * with a uppercase letter, but here all alphanumeric values (plus '_'_
       * are concatenated.
       */