Fossil

#define TIMELINE_LEAFONLY 0x0002  /* Show "Leaf", but not "Merge", "Fork" etc */
#define TIMELINE_BRIEF    0x0004  /* Combine adjacent elements of same object */
#define TIMELINE_GRAPH    0x0008  /* Compute a graph */
#define TIMELINE_DISJOINT 0x0010  /* Elements are not contiguous */
#define TIMELINE_FCHANGES 0x0020  /* Detail file changes */
#define TIMELINE_BRCOLOR  0x0040  /* Background color by branch name */
#define TIMELINE_UCOLOR   0x0080  /* Background color by user */
#define TIMELINE_FRENAMES 0x0100  /* Detail only file name changes */
#endif

/*
** Hash a string and use the hash to determine a background color.
*/
char *hash_color(const char *z){
  int i;                       /* Loop counter */

    /* Generate extra hyperlinks at the end of the comment */
    if( xExtra ){
      xExtra(rid);
    }

    /* Generate the file-change list if requested */
    if( (tmFlags & (TIMELINE_FCHANGES|TIMELINE_FRENAMES))!=0
     && zType[0]=='c' && g.perm.Hyperlink
    ){
      int inUl = 0;
      if( !fchngQueryInit ){
        db_prepare(&fchngQuery,
          "SELECT (pid==0) AS isnew,"
          "       (fid==0) AS isdel,"
          "       (SELECT name FROM filename WHERE fnid=mlink.fnid) AS name,"
          "       (SELECT uuid FROM blob WHERE rid=fid),"

        const char *zOldName = db_column_text(&fchngQuery, 5);
        const char *zOld = db_column_text(&fchngQuery, 4);
        const char *zNew = db_column_text(&fchngQuery, 3);
        if( !inUl ){
          @ <ul class="filelist">
          inUl = 1;
        }
        if( (tmFlags & TIMELINE_FRENAMES)!=0 ){
          if( !isNew && !isDel && fossil_strcmp(zOld,zNew)!=0 && zOldName!=0 ){
            @ <li> %h(zOldName) &rarr; %h(zFilename)
          }
          continue;
        }          
        if( isNew ){
          @ <li> %h(zFilename) (new file) &nbsp;
          @ %z(xhref("target='diffwindow'","%R/artifact/%S",zNew))
          @ [view]</a></li>
        }else if( isDel ){
          @ <li> %h(zFilename) (deleted)</li>
        }else if( fossil_strcmp(zOld,zNew)==0 && zOldName!=0 ){

**    ng             Suppress the graph if present
**    nd             Suppress "divider" lines
**    fc             Show details of files changed
**    f=UUID         Show family (immediate parents and children) of UUID
**    from=UUID      Path from...
**    to=UUID          ... to this
**    nomerge          ... avoid merge links on the path
**    uf=FUUID       Show only checkins that use given file version
**    brbg           Background color from branch name
**    ubg            Background color from user
**    namechng       Show only checkins that filename changes
**
** p= and d= can appear individually or together.  If either p= or d=
** appear, then u=, y=, a=, and b= are ignored.
**
** If a= and b= appear, only a= is used.  If neither appear, the most
** recent events are chosen.
**

  const char *zBefore = P("b");      /* Events before this time */
  const char *zCirca = P("c");       /* Events near this time */
  const char *zTagName = P("t");     /* Show events with this tag */
  const char *zBrName = P("r");      /* Show events related to this tag */
  const char *zSearch = P("s");      /* Search string */
  const char *zUses = P("uf");       /* Only show checkins hold this file */
  int useDividers = P("nd")==0;      /* Show dividers if "nd" is missing */
  int renameOnly = P("namechng")!=0; /* Show only checkins that rename files */
  int tagid;                         /* Tag ID */
  int tmFlags;                       /* Timeline flags */
  const char *zThisTag = 0;          /* Suppress links to this tag */
  const char *zThisUser = 0;         /* Suppress links to this user */
  HQuery url;                        /* URL for various branch links */
  int from_rid = name_to_typed_rid(P("from"),"ci"); /* from= for paths */
  int to_rid = name_to_typed_rid(P("to"),"ci");    /* to= for path timelines */

      url_add_parameter(&url, "uf", zUses);
      db_multi_exec("CREATE TEMP TABLE usesfile(rid INTEGER PRIMARY KEY)");
      compute_uses_file("usesfile", ufid, 0);
      zType = "ci";
    }else{
      zUses = 0;
    }
  }
  if( renameOnly ){
    db_multi_exec(
      "CREATE TEMP TABLE rnfile(rid INTEGER PRIMARY KEY);"
      "INSERT OR IGNORE INTO rnfile"
      "  SELECT mid FROM mlink WHERE pfnid>0 AND pfnid!=fnid;"
    );
  }

  style_header("Timeline");
  login_anonymous_available();
  timeline_temp_table();
  blob_zero(&sql);
  blob_zero(&desc);

    const char *zEType = "timeline item";
    char *zDate;
    char *zNEntry = mprintf("%d", nEntry);
    url_add_parameter(&url, "n", zNEntry);
    if( zUses ){
      blob_appendf(&sql, " AND event.objid IN usesfile ");
    }
    if( renameOnly ){
      blob_appendf(&sql, " AND event.objid IN rnfile ");
    }
    if( tagid>0 ){
      blob_appendf(&sql,
        "AND (EXISTS(SELECT 1 FROM tagxref"
                    " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)", tagid);

      if( zBrName ){
        url_add_parameter(&url, "r", zBrName);

    }
    if( zUses ){
      char *zFilenames = names_of_file(zUses);
      blob_appendf(&desc, " using file %s version %z%S</a>", zFilenames,
                   href("%R/artifact/%S",zUses), zUses);
      tmFlags |= TIMELINE_DISJOINT;
    }
    if( renameOnly ){
      blob_appendf(&desc, " that contain filename changes");
      tmFlags |= TIMELINE_DISJOINT|TIMELINE_FRENAMES;
    }
    if( zUser ){
      blob_appendf(&desc, " by user %h", zUser);
      tmFlags |= TIMELINE_DISJOINT;
    }
    if( zTagName ){
      blob_appendf(&desc, " tagged with \"%h\"", zTagName);
      tmFlags |= TIMELINE_DISJOINT;