Fossil

#define MUTYPE_LI          0x0020   /* List items.  <li>, <dd>, <dt> */
#define MUTYPE_TABLE       0x0040   /* <table> */
#define MUTYPE_TR          0x0080   /* <tr> */
#define MUTYPE_TD          0x0100   /* <td> or <th> */
#define MUTYPE_SPECIAL     0x0200   /* <nowiki> or <verbatim> */
#define MUTYPE_HYPERLINK   0x0400   /* <a> */

/* MUTYPE values for elements that require strictly nested end-tags */
#define MUTYPE_Nested      0x0656

/*
** These markup types must have an end tag.
*/
#define MUTYPE_STACK  (MUTYPE_BLOCK | MUTYPE_FONT | MUTYPE_LIST | MUTYPE_TABLE)

/*
** This markup types are allowed for "inline" text.

  p->aStack = p->aSpace;
}

/*
** Push a new element onto the tag statk
*/
void html_tagstack_push(HtmlTagStack *p, int e){
  if( (aMarkup[e].iType & MUTYPE_Nested)==0 ) return;
  if( p->n>=ArraySize(p->aSpace) && p->n>=p->nAlloc ){
    if( p->nAlloc==0 ){
      int *aNew;
      p->nAlloc = 50;
      aNew = fossil_malloc( sizeof(p->aStack[0])*p->nAlloc );
      memcpy(aNew, p->aStack, sizeof(p->aStack[0])*p->n );
      p->aStack = aNew;

** end-tags as you go.
**
** If there is no open-tag for eEnd on the stack, then this
** routine is a no-op.
*/
void html_tagstack_pop(HtmlTagStack *p, Blob *pBlob, int eEnd){
  int i;
  if( (aMarkup[eEnd].iType & MUTYPE_Nested)==0 ) return;
  for(i=p->n-1; i>=0 && p->aStack[i]!=eEnd; i--){}
  if( i<0 ){
    blob_appendf(pBlob, "<span class='error'>&lt;/%s&gt;</span>",
                 aMarkup[eEnd].zName);
    return;
  }
  do{
    p->n--;
    blob_appendf(pBlob, "</%s>", aMarkup[eEnd].zName);
    blob_appendf(pBlob, "</%s>", aMarkup[p->aStack[p->n]].zName);
  }while( p->aStack[p->n]!=eEnd );
}

/*
** Append HTML text to a Blob object.  The appended text is modified
** changed in the following ways:
**

      blob_appendf(pBlob, "<span class='error'>&lt;%.*s&gt;</span>",
                   n-2, zHtml+j+1);
    }else{
      if( markup.endTag ){
        html_tagstack_pop(&s, pBlob, markup.iCode);
      }else{
        renderMarkup(pBlob, &markup);
        if( markup.iType!=MUTYPE_SINGLE ){
          html_tagstack_push(&s, markup.iCode);
        html_tagstack_push(&s, markup.iCode);
        }
      }
    }
    unparseMarkup(&markup);
  }
  while( s.n>0 ){
    s.n--;
    blob_appendf(pBlob, "</%s>", aMarkup[s.aStack[s.n]]);