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File src/timeline.c part of check-in [e15fe43153] - A new decendent finding algorithm is (hopefully) faster. Changes to the timeline are in process and might not yet work. by drh on 2007-08-31 20:14:33. [view]

To:

File src/timeline.c part of check-in [abce5105e2] - Updates to the timeline routines. Added the pqueue module. by drh on 2007-09-01 01:55:50. [view]

@@ -23,8 +23,9 @@
 **
 ** This file contains code to implement the timeline web page
 **
 */
+#include <string.h>
 #include "config.h"
 #include "timeline.h"
 
 /*
@@ -245,8 +246,19 @@
       zSQL = mprintf("%z AND event.mtime %s julianday(%Q, 'localtime')",
                       zSQL, afterFlag ? ">=" : "<=", zStart);
     }
   }
+  if( relatedEvents && objid ){
+    db_multi_exec(
+       "CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY)"
+    );
+    if( afterFlag ){
+      compute_descendents(objid, nEntry);
+    }else{
+      compute_ancestors(objid, nEntry);
+    }
+    zSQL = mprintf("%z AND event.objid IN ok", zSQL);
+  }
   zSQL = mprintf("%z ORDER BY event.mtime DESC LIMIT %d", zSQL, nEntry);
   db_prepare(&q, zSQL);
   free(zSQL);
   zDate[0] = 0;
@@ -388,47 +400,106 @@
 
 /*
 ** COMMAND: timeline
 **
-** Usage: %fossil timeline ?DATETIME? ?-n|--count N?
+** Usage: %fossil timeline ?WHEN? ?UUID|DATETIME? ?-n|--count N?
 **
 ** Print a summary of activity going backwards in date and time
 ** specified or from the current date and time if no arguments
-** are given.  Show as many as N (default 20) check-ins.
+** are given.  Show as many as N (default 20) check-ins.  The
+** WHEN argument can be any unique abbreviation of one of these
+** keywords:
+**
+**     before
+**     after
+**     descendents | children
+**     ancestors | parents
 **
-** The date and time should be in the ISO8601 format.  For
-** examples: "2007-08-18 07:21:21".  The time may be omitted.
-** Times are according to the local timezone.
+** The UUID can be any unique prefix of 4 characters or more.
+** The DATETIME should be in the ISO8601 format.  For
+** examples: "2007-08-18 07:21:21".  You can also say "current"
+** for the current version or "now" for the current time.
 */
 void timeline_cmd(void){
   Stmt q;
-  int n;
+  int n, k;
   const char *zCount;
+  char *zOrigin;
   char *zDate;
+  char *zSQL;
+  int objid = 0;
+  Blob uuid;
+  int mode = 1 ;       /* 1: before  2:after  3:children  4:parents */
   db_find_and_open_repository();
   zCount = find_option("n","count",1);
   if( zCount ){
     n = atoi(zCount);
   }else{
     n = 20;
   }
-  if( g.argc!=2 && g.argc!=3 ){
-    usage("YYYY-MM-DDtHH:MM:SS");
+  if( g.argc==4 ){
+    k = strlen(g.argv[2]);
+    if( strncmp(g.argv[2],"before",k)==0 ){
+      mode = 1;
+    }else if( strncmp(g.argv[2],"after",k)==0 && k>1 ){
+      mode = 2;
+    }else if( strncmp(g.argv[2],"descendents",k)==0 ){
+      mode = 3;
+    }else if( strncmp(g.argv[2],"children",k)==0 ){
+      mode = 3;
+    }else if( strncmp(g.argv[2],"ancestors",k)==0 && k>1 ){
+      mode = 4;
+    }else if( strncmp(g.argv[2],"parents",k)==0 ){
+      mode = 4;
+    }else{
+      usage("?WHEN? ?UUID|DATETIME?");
+    }
+    zOrigin = g.argv[3];
+  }else if( g.argc==3 ){
+    zOrigin = g.argv[2];
+  }else{
+    zOrigin = "now";
   }
-  if( g.argc==3 ){
-    zDate = g.argv[2];
+  k = strlen(zOrigin);
+  blob_zero(&uuid);
+  blob_append(&uuid, zOrigin, -1);
+  if( strcmp(zOrigin, "now")==0 ){
+    if( mode==3 || mode==4 ){
+      fossil_fatal("cannot compute descendents or ancestors of a date");
+    }
+    zDate = mprintf("(SELECT julianday('now','utc'))");
+  }else if( strncmp(zOrigin, "current", k)==0 ){
+    objid = db_lget_int("checkout",0);
+    zDate = mprintf("(SELECT mtime FROM plink WHERE cid=%d)", objid);
+  }else if( name_to_uuid(&uuid, 0)==0 ){
+    objid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &uuid);
+    zDate = mprintf("(SELECT mtime FROM plink WHERE cid=%d)", objid);
   }else{
-    zDate = "now";
+    if( mode==3 || mode==4 ){
+      fossil_fatal("cannot compute descendents or ancestors of a date");
+    }
+    zDate = mprintf("(SELECT julianday(%Q, 'utc'))", zOrigin);
   }
-  db_prepare(&q,
+  zSQL = mprintf(
     "SELECT blob.rid, uuid, datetime(event.mtime,'localtime'),"
     "       comment || ' (by ' || user || ')',"
     "       (SELECT count(*) FROM plink WHERE pid=blob.rid AND isprim),"
     "       (SELECT count(*) FROM plink WHERE cid=blob.rid)"
     "  FROM event, blob"
     " WHERE event.type='ci' AND blob.rid=event.objid"
-    "   AND event.mtime<=(SELECT julianday(%Q,'utc'))"
-    " ORDER BY event.mtime DESC", zDate
+    "   AND event.mtime %s %s",
+    (mode==1 || mode==4) ? "<=" : ">=", zDate
   );
+  if( mode==3 || mode==4 ){
+    db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
+    if( mode==3 ){
+      compute_descendents(objid, n);
+    }else{
+      compute_ancestors(objid, n);
+    }
+    zSQL = mprintf("%z AND blob.rid IN ok", zSQL);
+  }
+  zSQL = mprintf("%z ORDER BY event.mtime DESC", zSQL);
+  db_prepare(&q, zSQL);
   print_timeline(&q, n);
   db_finalize(&q);
 }