Fossil

**
** Show the change history for a single file.
**
** Additional query parameters:
**
**    a=DATETIME Only show changes after DATETIME
**    b=DATETIME Only show changes before DATETIME
**    m=HASH     Mark this particular file version
**    n=NUM      Show the first NUM changes only
**    brbg       Background color by branch name
**    ubg        Background color by user name
**    ci=UUID    Ancestors of a particular check-in
**    orig=UUID  If both ci and orig are supplied, only show those
**                 changes on a direct path from orig to ci.
**    showid     Show RID values for debugging

  int uBg = P("ubg")!=0;
  int fDebug = atoi(PD("debug","0"));
  int fShowId = P("showid")!=0;
  Stmt qparent;
  int iTableId = timeline_tableid();
  int tmFlags = 0;            /* Viewing mode */
  const char *zStyle;         /* Viewing mode name */
  const char *zMark;          /* Mark this version of the file */
  int selRid = 0;             /* RID of the marked file version */

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_header("File History");
  login_anonymous_available();
  tmFlags = timeline_ss_submenu();
  if( tmFlags & TIMELINE_COLUMNAR ){

    blob_append_sql(&sql, " LIMIT %d", n);
    url_add_parameter(&url, "n", P("n"));
  }
  db_prepare(&q, "%s", blob_sql_text(&sql));
  if( P("showsql")!=0 ){
    @ <p>SQL: %h(blob_str(&sql))</p>
  }
  zMark = P("m");
  if( zMark ){
    selRid = symbolic_name_to_rid(zMark, "*");
  }
  blob_reset(&sql);
  blob_zero(&title);
  if( baseCheckin ){
    char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", baseCheckin);
    char *zLink = href("%R/info/%!S", zUuid);
    if( origCheckin ){
      blob_appendf(&title, "Changes to file ");

      sqlite3_snprintf(sizeof(zPrevDate), zPrevDate, "%.10s", zDate);
      @ <tr><td>
      @   <div class="divider timelineDate">%s(zPrevDate)</div>
      @ </td><td></td><td></td></tr>
    }
    memcpy(zTime, &zDate[11], 5);
    zTime[5] = 0;
    if( frid==selRid ){
      @ <tr class='timelineSelected'>
    }else{
      @ <tr>
    }
    @ <td class="timelineTime">\
    @ %z(href("%R/artifact/%!S",zUuid))%s(zTime)</a></td>
    @ <td class="timelineGraph"><div id="m%d(gidx)" class="tl-nodemark"></div>
    @ </td>
    if( zBgClr && zBgClr[0] ){
      @ <td class="timeline%s(zStyle)Cell" \
      @  style="background-color: %h(zBgClr);">
    }else{