Fossil

  }
  bklnk.srcid = srcid;
  assert( ValidBklnk(srctype) );
  assert( ValidMTC(mimetype) );
  bklnk.srctype = srctype;
  bklnk.mtime = mtime;
  if( mimetype==MT_NONE || mimetype==MT_WIKI ){
    int flags;
    if( srctype==BKLNK_COMMENT ){
      flags = WIKI_INLINE | WIKI_MARKDOWN_LINK;
    }else{
      flags = 0;
    }
    wiki_extract_links(zSrc, &bklnk, flags);
  }else if( mimetype==MT_MARKDOWN ){
    markdown_extract_links(zSrc, &bklnk);
  }
}

/*
** COMMAND: test-backlinks

  char zClose[20];

  if( zLink==0 || zLink[0]==0 ){
    zClose[0] = 0;
  }else{
    static const int flags =
       WIKI_NOBADLINKS |
       WIKI_MARKDOWN_URL
    ;
    wiki_resolve_hyperlink(ob, flags, zLink, zClose, sizeof(zClose), 0, zTitle);
  }
  if( blob_size(content)==0 ){
    if( link ) blob_appendb(ob, link);
  }else{
    blob_appendb(ob, content);

    }
    if( db_get_boolean("timeline-plaintext", 0) ){
      wikiFlags |= WIKI_LINKSONLY;
    }
    if( db_get_boolean("timeline-hard-newlines", 0) ){
      wikiFlags |= WIKI_NEWLINE;
    }
    wikiFlags |= WIKI_MARKDOWN_LINK;
  }
  if( altForm2 ){
    /* block markup (ex: <p>, <table>) allowed */
    return  wikiFlags & ~WIKI_NOBLOCK;
  }else{
    /* Do not allow any block format.  Everything in a <span> */
    return wikiFlags;

#define WIKI_HTMLONLY       0x001  /* HTML markup only.  No wiki */
#define WIKI_INLINE         0x002  /* Do not surround with <p>..</p> */
#define WIKI_NOBLOCK        0x004  /* No block markup of any kind */
#define WIKI_BUTTONS        0x008  /* Allow sub-menu buttons */
#define WIKI_NOBADLINKS     0x010  /* Ignore broken hyperlinks */
#define WIKI_LINKSONLY      0x020  /* No markup.  Only decorate links */
#define WIKI_NEWLINE        0x040  /* Honor \n - break lines at each \n */
#define WIKI_MARKDOWN_URL   0x080  /* Hyperlink targets as in markdown */
#define WIKI_SAFE           0x100  /* Make the result safe for embedding */
#define WIKI_TARGET_BLANK   0x200  /* Hyperlinks go to a new window */
#define WIKI_NOBRACKET      0x400  /* Omit extra [..] around hyperlinks */
#define WIKI_MARKDOWN_LINK  0x800  /* Markdown link syntax: [display](URL) */
#endif


/*
** These are the only markup attributes allowed.
*/
enum allowed_attr_t {

      blob_appendf(pOut, "<a href=\"%R/wiki?name=%T\"%s>", z, zExtra);
    }
  }else if( strlen(zTarget)>=10 && fossil_isdigit(zTarget[0]) && zTarget[4]=='-'
            && db_int(0, "SELECT datetime(%Q) NOT NULL", zTarget) ){
    /* Dates or date-and-times in ISO8610 resolve to a link to the
    ** timeline for that date */
    blob_appendf(pOut, "<a href=\"%R/timeline?c=%T\"%s>", zTarget, zExtra);
  }else if( mFlags & WIKI_MARKDOWN_URL ){
    /* If none of the above, and if rendering link references for markdown,
    ** then create a link to the literal text of the target */
    blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
  }else if( zOrig && zTarget>=&zOrig[2]
        && zTarget[-1]=='[' && !fossil_isspace(zTarget[-2]) ){
    /* If the hyperlink markup is not preceded by whitespace, then it
    ** is probably a C-language subscript or similar, not really a
    ** hyperlink.  Just ignore it. */
    zTerm = "";

          blob_append_string(p->pOut, "&");
        }
        break;
      }
      case TOKEN_LINK: {
        char *zTarget;
        char *zDisplay = 0;
        char *zEnd;
        int i, j;
        int savedState;
        char zClose[20];
        char cS1 = 0;
        int iS1 = 0;

        startAutoParagraph(p);
        if( z[n]=='('
         && (p->state & WIKI_MARKDOWN_LINK)!=0
         && (zEnd = strchr(z+n+1,')'))!=0
        ){
          /* Markdown-style hyperlinks: [display-text](URL) or [](URL) */
          if( n>2 ){
            zDisplay = &z[1];
            z[n] = 0;
          }else{
            zDisplay = 0;
          }
          zTarget = &z[n+1];
          for(i=n+1; z[i] && z[i]!=')' && z[i]!=' '; i++){}
          n = (int)(zEnd - z) + 1;
        }else{
          /* Wiki-style hyperlinks: [URL|display-text] or [URL] */
          zTarget = &z[1];
          for(i=1; z[i] && z[i]!=']'; i++){
            if( z[i]=='|' && zDisplay==0 ){
              zDisplay = &z[i+1];
              for(j=i; j>0 && fossil_isspace(z[j-1]); j--){}
              iS1 = j;
              cS1 = z[j];
              z[j] = 0;
            }
          }
        }
        z[i] = 0;
        if( zDisplay==0 ){
          zDisplay = zTarget + interwiki_removable_prefix(zTarget);
        }else{
          while( fossil_isspace(*zDisplay) ) zDisplay++;

**
** Options:
**    --buttons        Set the WIKI_BUTTONS flag
**    --dark-pikchr    Render pikchrs in dark mode
**    --htmlonly       Set the WIKI_HTMLONLY flag
**    --inline         Set the WIKI_INLINE flag
**    --linksonly      Set the WIKI_LINKSONLY flag
**    --md-links       Allow markdown link syntax
**    --nobadlinks     Set the WIKI_NOBADLINKS flag
**    --noblock        Set the WIKI_NOBLOCK flag
**    --text           Run the output through html_to_plaintext().
*/
void test_wiki_render(void){
  Blob in, out;
  int flags = 0;
  int bText;
  if( find_option("buttons",0,0)!=0 ) flags |= WIKI_BUTTONS;
  if( find_option("htmlonly",0,0)!=0 ) flags |= WIKI_HTMLONLY;
  if( find_option("linksonly",0,0)!=0 ) flags |= WIKI_LINKSONLY;
  if( find_option("nobadlinks",0,0)!=0 ) flags |= WIKI_NOBADLINKS;
  if( find_option("inline",0,0)!=0 ) flags |= WIKI_INLINE;
  if( find_option("noblock",0,0)!=0 ) flags |= WIKI_NOBLOCK;
  if( find_option("md-links",0,0)!=0 ) flags |= WIKI_MARKDOWN_LINK;
  if( find_option("dark-pikchr",0,0)!=0 ){
    pikchr_to_html_add_flags( PIKCHR_PROCESS_DARK_MODE );
  }
  bText = find_option("text",0,0)!=0;
  db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
  verify_all_options();
  if( g.argc!=3 ) usage("FILE");

    if( wikiHtmlOnly ){
      n = nextRawToken(z, &renderer, &tokenType);
    }else{
      n = nextWikiToken(z, &renderer, &tokenType);
    }
    switch( tokenType ){
      case TOKEN_LINK: {
        char *zTarget, *zEnd;
        int i;

        if( z[n]=='('
         && (flags & WIKI_MARKDOWN_LINK)!=0
         && (zEnd = strchr(z+n+1,')'))!=0
        ){
          /* Markdown-style hyperlinks: [display-text](URL) or [](URL) */
          z += n+1;
          zTarget = z;
          for(i=1; z[i] && z[i]!=')' && z[i]!=' '; i++){}
          n = (int)(zEnd - z) + 1;
        }else{
          /* Wiki-style hyperlinks: [URL|display-text] or [URL] */
          zTarget = &z[1];
          for(i=0; zTarget[i] && zTarget[i]!='|' && zTarget[i]!=']'; i++){}
          while(i>1 && zTarget[i-1]==' '){ i--; }
        }
        backlink_create(pBklnk, zTarget, i);
        break;
      }
      case TOKEN_MARKUP: {
        const char *zId;
        int iDiv;
        parseMarkup(&markup, z);