Need to upgrade javascriptrrdfile.js to latest 1.1.1 version to support rrd files generated by arm machines.srix/master

Yes the rrd file generated by arm is not binary compatible with x86. However rebuilding the dependency.js kept failing because of version mismatch. so excluded the rrd file part and added it as separate JS.

2 files changed, 443 insertions, 17 deletions

diff --git a/docs/examples/assets/js/dependencies.js b/docs/examples/assets/js/dependencies.js
index dfefa39..9f3e0ae 100644
--- a/docs/examples/assets/js/dependencies.js
+++ b/docs/examples/assets/js/dependencies.js
@@ -4,7 +4,6 @@
 // @code_url http://flot.googlecode.com/svn/trunk/jquery.flot.js
 // @code_url http://flot.googlecode.com/svn/trunk/jquery.flot.stack.js
 // @code_url http://flot.googlecode.com/svn/trunk/jquery.flot.selection.js
-// @code_url http://javascriptrrd.cvs.sourceforge.net/viewvc/javascriptrrd/v0/src/lib/rrdFile.js
 // @code_url https://raw.github.com/jquerytools/jquerytools/dev/src/dateinput/dateinput.js
 // @code_url https://raw.github.com/jquerytools/jquerytools/dev/src/tabs/tabs.js
 // @code_url https://raw.github.com/jquerytools/jquerytools/dev/src/toolbox/toolbox.history.js
@@ -305,22 +304,6 @@ void 0)document.ondrag=n;J=!1;K(d);ma()?R():(j.getPlaceholder().trigger("plotuns
 t.selection.mode=="y"?(D.x=0,l.x=j.width()):(z=C(d,"x"),D.x=z.axis.p2c(z.from),l.x=z.axis.p2c(z.to));t.selection.mode=="x"?(D.y=0,l.y=j.height()):(z=C(d,"y"),D.y=z.axis.p2c(z.from),l.y=z.axis.p2c(z.to));x=!0;j.triggerRedrawOverlay();!n&&ma()&&R()};j.getSelection=L;j.hooks.bindEvents.push(function(d,j){d.getOptions().selection.mode!=null&&(j.mousemove(y),j.mousedown(V))});j.hooks.drawOverlay.push(function(j,n){if(x&&ma()){var z=j.getPlotOffset(),t=j.getOptions();n.save();n.translate(z.left,z.top);
 z=d.color.parse(t.selection.color);n.strokeStyle=z.scale("a",0.8).toString();n.lineWidth=1;n.lineJoin="round";n.fillStyle=z.scale("a",0.4).toString();var z=Math.min(D.x,l.x),t=Math.min(D.y,l.y),C=Math.abs(l.x-D.x),y=Math.abs(l.y-D.y);n.fillRect(z,t,C,y);n.strokeRect(z,t,C,y);n.restore()}});j.hooks.shutdown.push(function(j,l){l.unbind("mousemove",y);l.unbind("mousedown",V);S&&d(document).unbind("mouseup",S)})},options:{selection:{mode:null,color:"#e8cfac"}},name:"selection",version:"1.1"})})(jQuery);
 // Input 5
-function InvalidRRD(d){this.message=d;this.name="Invalid RRD"}InvalidRRD.prototype.toString=function(){return this.name+': "'+this.message+'"'};function RRDDS(d,j,E){this.rrd_data=d;this.rrd_data_idx=j;this.my_idx=E}RRDDS.prototype.getIdx=function(){return this.my_idx};RRDDS.prototype.getName=function(){return this.rrd_data.getCStringAt(this.rrd_data_idx,20)};RRDDS.prototype.getType=function(){return this.rrd_data.getCStringAt(this.rrd_data_idx+20,20)};
-RRDDS.prototype.getMin=function(){return this.rrd_data.getDoubleAt(this.rrd_data_idx+48)};RRDDS.prototype.getMax=function(){return this.rrd_data.getDoubleAt(this.rrd_data_idx+56)};function RRDRRAInfo(d,j,E,n,J,D){this.rrd_data=d;this.rra_def_idx=j;this.rrd_align=E;this.row_cnt=n;this.pdp_step=J;this.my_idx=D}RRDRRAInfo.prototype.getIdx=function(){return this.my_idx};RRDRRAInfo.prototype.getNrRows=function(){return this.row_cnt};
-RRDRRAInfo.prototype.getPdpPerRow=function(){return this.rrd_align==32?this.rrd_data.getLongAt(this.rra_def_idx+24,20):this.rrd_data.getLongAt(this.rra_def_idx+32,20)};RRDRRAInfo.prototype.getStep=function(){return this.pdp_step*this.getPdpPerRow()};RRDRRAInfo.prototype.getCFName=function(){return this.rrd_data.getCStringAt(this.rra_def_idx,20)};
-function RRDRRA(d,j,E,n,J,D){this.rrd_data=d;this.rra_info=E;this.row_cnt=E.row_cnt;this.ds_cnt=D;var l=D*8;this.base_rrd_db_idx=n+J*l;this.cur_row=d.getLongAt(j);this.calc_idx=function(d,j){if(d>=0&&d<this.row_cnt)if(j>=0&&j<D){var n=d+this.cur_row+1;n>=this.row_cnt&&(n-=this.row_cnt);return l*n+j*8}else throw RangeError("DS idx ("+d+") out of range [0-"+D+").");else throw RangeError("Row idx ("+d+") out of range [0-"+this.row_cnt+").");}}RRDRRA.prototype.getIdx=function(){return this.rra_info.getIdx()};
-RRDRRA.prototype.getNrRows=function(){return this.row_cnt};RRDRRA.prototype.getNrDSs=function(){return this.ds_cnt};RRDRRA.prototype.getStep=function(){return this.rra_info.getStep()};RRDRRA.prototype.getCFName=function(){return this.rra_info.getCFName()};RRDRRA.prototype.getEl=function(d,j){return this.rrd_data.getDoubleAt(this.base_rrd_db_idx+this.calc_idx(d,j))};RRDRRA.prototype.getElFast=function(d,j){return this.rrd_data.getFastDoubleAt(this.base_rrd_db_idx+this.calc_idx(d,j))};
-function RRDHeader(d){this.rrd_data=d;this.validate_rrd();this.load_header();this.calc_idxs()}
-RRDHeader.prototype.validate_rrd=function(){if(this.rrd_data.getCStringAt(0,4)!=="RRD")throw new InvalidRRD("Wrong magic id.");this.rrd_version=this.rrd_data.getCStringAt(4,5);if(this.rrd_version!=="0003"&&this.rrd_version!=="0004")throw new InvalidRRD("Unsupported RRD version "+this.rrd_version+".");if(this.rrd_data.getDoubleAt(12)==8.642135E130)this.rrd_align=32;else if(this.rrd_data.getDoubleAt(16)==8.642135E130)this.rrd_align=64;else throw new InvalidRRD("Unsupported platform.");};
-RRDHeader.prototype.load_header=function(){this.rrd_align==32?(this.ds_cnt=this.rrd_data.getLongAt(20,!1),this.rra_cnt=this.rrd_data.getLongAt(24,!1),this.pdp_step=this.rrd_data.getLongAt(28,!1),this.top_header_size=112):(this.ds_cnt=this.rrd_data.getLongAt(24,!1),this.rra_cnt=this.rrd_data.getLongAt(32,!1),this.pdp_step=this.rrd_data.getLongAt(40,!1),this.top_header_size=128)};
-RRDHeader.prototype.calc_idxs=function(){this.ds_def_idx=this.top_header_size;this.ds_el_size=120;this.rra_def_idx=this.ds_def_idx+this.ds_el_size*this.ds_cnt;this.rrd_align==32?(this.rra_def_el_size=108,this.row_cnt_idx=20):(this.rra_def_el_size=120,this.row_cnt_idx=24);this.live_head_idx=this.rra_def_idx+this.rra_def_el_size*this.rra_cnt;this.live_head_size=this.rrd_align==32?8:16;this.pdp_prep_idx=this.live_head_idx+this.live_head_size;this.pdp_prep_el_size=112;this.cdp_prep_idx=this.pdp_prep_idx+
-this.pdp_prep_el_size*this.ds_cnt;this.cdp_prep_el_size=80;this.rra_ptr_idx=this.cdp_prep_idx+this.cdp_prep_el_size*this.ds_cnt*this.rra_cnt;this.rra_ptr_el_size=this.rrd_align==32?4:8;this.header_size=this.rra_ptr_idx+this.rra_ptr_el_size*this.rra_cnt};
-RRDHeader.prototype.load_row_cnts=function(){this.rra_def_row_cnts=[];this.rra_def_row_cnt_sums=[];for(var d=0;d<this.rra_cnt;d++)this.rra_def_row_cnts[d]=this.rrd_data.getLongAt(this.rra_def_idx+d*this.rra_def_el_size+this.row_cnt_idx,!1),this.rra_def_row_cnt_sums[d]=d==0?0:this.rra_def_row_cnt_sums[d-1]+this.rra_def_row_cnts[d-1]};RRDHeader.prototype.getMinStep=function(){return this.pdp_step};RRDHeader.prototype.getLastUpdate=function(){return this.rrd_data.getLongAt(this.live_head_idx,!1)};
-RRDHeader.prototype.getNrDSs=function(){return this.ds_cnt};RRDHeader.prototype.getDSNames=function(){for(var d=[],j=0;j<this.ds_cnt;j++){var E=this.getDSbyIdx(j).getName();d.push(E)}return d};RRDHeader.prototype.getDSbyIdx=function(d){if(d>=0&&d<this.ds_cnt)return new RRDDS(this.rrd_data,this.ds_def_idx+this.ds_el_size*d,d);else throw RangeError("DS idx ("+d+") out of range [0-"+this.ds_cnt+").");};
-RRDHeader.prototype.getDSbyName=function(d){for(var j=0;j<this.ds_cnt;j++){var E=this.getDSbyIdx(j);if(E.getName()==d)return E}throw RangeError("DS name "+d+" unknown.");};RRDHeader.prototype.getNrRRAs=function(){return this.rra_cnt};
-RRDHeader.prototype.getRRAInfo=function(d){if(d>=0&&d<this.rra_cnt)return new RRDRRAInfo(this.rrd_data,this.rra_def_idx+d*this.rra_def_el_size,this.rrd_align,this.rra_def_row_cnts[d],this.pdp_step,d);else throw RangeError("RRA idx ("+d+") out of range [0-"+this.rra_cnt+").");};
-function RRDFile(d){this.rrd_header=new RRDHeader(d);this.rrd_header.load_row_cnts();this.getMinStep=function(){return this.rrd_header.getMinStep()};this.getLastUpdate=function(){return this.rrd_header.getLastUpdate()};this.getNrDSs=function(){return this.rrd_header.getNrDSs()};this.getDSNames=function(){return this.rrd_header.getDSNames()};this.getDS=function(d){return typeof d=="number"?this.rrd_header.getDSbyIdx(d):this.rrd_header.getDSbyName(d)};this.getNrRRAs=function(){return this.rrd_header.getNrRRAs()};
-this.getRRAInfo=function(d){return this.rrd_header.getRRAInfo(d)};this.getRRA=function(j){rra_info=this.rrd_header.getRRAInfo(j);return new RRDRRA(d,this.rrd_header.rra_ptr_idx+j*this.rrd_header.rra_ptr_el_size,rra_info,this.rrd_header.header_size,this.rrd_header.rra_def_row_cnt_sums[j],this.rrd_header.ds_cnt)}};
 // Input 6
 /*
                                      
diff --git a/docs/examples/assets/js/rrdFile-1.1.1.js b/docs/examples/assets/js/rrdFile-1.1.1.js
new file mode 100644
index 0000000..eabebc7
--- /dev/null
+++ b/docs/examples/assets/js/rrdFile-1.1.1.js
@@ -0,0 +1,443 @@
+/*

+ * Client library for access to RRD archive files

+ * Part of the javascriptRRD package

+ * Copyright (c) 2009-2010 Frank Wuerthwein, fkw@ucsd.edu

+ *                         Igor Sfiligoi, isfiligoi@ucsd.edu

+ *

+ * Original repository: http://javascriptrrd.sourceforge.net/

+ * 

+ * MIT License [http://www.opensource.org/licenses/mit-license.php]

+ *

+ */

+

+/*

+ *

+ * RRDTool has been developed and is maintained by

+ * Tobias Oether [http://oss.oetiker.ch/rrdtool/]

+ *

+ * This software can be used to read files produced by the RRDTool

+ * but has been developed independently.

+ * 

+ * Limitations:

+ *

+ * This version of the module assumes RRD files created on linux 

+ * with intel architecture and supports both 32 and 64 bit CPUs.

+ * All integers in RRD files are suppoes to fit in 32bit values.

+ *

+ * Only versions 3 and 4 of the RRD archive are supported.

+ *

+ * Only AVERAGE,MAXIMUM,MINIMUM and LAST consolidation functions are

+ * supported. For all others, the behaviour is at the moment undefined.

+ *

+ */

+

+/*

+ * Dependencies:

+ *   

+ * The data provided to this module require an object of a class

+ * that implements the following methods:

+ *   getByteAt(idx)            - Return a 8 bit unsigned integer at offset idx

+ *   getLongAt(idx)            - Return a 32 bit unsigned integer at offset idx

+ *   getDoubleAt(idx)          - Return a double float at offset idx

+ *   getFastDoubleAt(idx)      - Similar to getDoubleAt but with less precision

+ *   getCStringAt(idx,maxsize) - Return a string of at most maxsize characters

+ *                               that was 0-terminated in the source

+ *

+ * The BinaryFile from binaryXHR.js implements this interface.

+ *

+ */

+

+

+// ============================================================

+// Exception class

+function InvalidRRD(msg) {

+  this.message=msg;

+  this.name="Invalid RRD";

+}

+

+// pretty print

+InvalidRRD.prototype.toString = function() {

+  return this.name + ': "' + this.message + '"';

+}

+

+

+// ============================================================

+// RRD DS Info class

+function RRDDS(rrd_data,rrd_data_idx,my_idx) {

+  this.rrd_data=rrd_data;

+  this.rrd_data_idx=rrd_data_idx;

+  this.my_idx=my_idx;

+}

+

+RRDDS.prototype.getIdx = function() {

+  return this.my_idx;

+}

+RRDDS.prototype.getName = function() {

+  return this.rrd_data.getCStringAt(this.rrd_data_idx,20);

+}

+RRDDS.prototype.getType = function() {

+  return this.rrd_data.getCStringAt(this.rrd_data_idx+20,20);

+}

+RRDDS.prototype.getMin = function() {

+  return this.rrd_data.getDoubleAt(this.rrd_data_idx+48);

+}

+RRDDS.prototype.getMax = function() {

+  return this.rrd_data.getDoubleAt(this.rrd_data_idx+56);

+}

+

+

+// ============================================================

+// RRD RRA Info class

+function RRDRRAInfo(rrd_data,rra_def_idx,

+		    int_align,row_cnt,pdp_step,my_idx) {

+  this.rrd_data=rrd_data;

+  this.rra_def_idx=rra_def_idx;

+  this.int_align=int_align;

+  this.row_cnt=row_cnt;

+  this.pdp_step=pdp_step;

+  this.my_idx=my_idx;

+

+  // char nam[20], uint row_cnt, uint pdp_cnt

+  this.rra_pdp_cnt_idx=rra_def_idx+Math.ceil(20/int_align)*int_align+int_align;

+}

+

+RRDRRAInfo.prototype.getIdx = function() {

+  return this.my_idx;

+}

+

+// Get number of rows

+RRDRRAInfo.prototype.getNrRows = function() {

+  return this.row_cnt;

+}

+

+// Get number of slots used for consolidation

+// Mostly for internal use

+RRDRRAInfo.prototype.getPdpPerRow = function() {

+  return this.rrd_data.getLongAt(this.rra_pdp_cnt_idx);

+}

+

+// Get RRA step (expressed in seconds)

+RRDRRAInfo.prototype.getStep = function() {

+  return this.pdp_step*this.getPdpPerRow();

+}

+

+// Get consolidation function name

+RRDRRAInfo.prototype.getCFName = function() {

+  return this.rrd_data.getCStringAt(this.rra_def_idx,20);

+}

+

+

+// ============================================================

+// RRD RRA handling class

+function RRDRRA(rrd_data,rra_ptr_idx,

+		rra_info,

+		header_size,prev_row_cnts,ds_cnt) {

+  this.rrd_data=rrd_data;

+  this.rra_info=rra_info;

+  this.row_cnt=rra_info.row_cnt;

+  this.ds_cnt=ds_cnt;

+

+  var row_size=ds_cnt*8;

+

+  this.base_rrd_db_idx=header_size+prev_row_cnts*row_size;

+

+  // get imediately, since it will be needed often

+  this.cur_row=rrd_data.getLongAt(rra_ptr_idx);

+

+  // calculate idx relative to base_rrd_db_idx

+  // mostly used internally

+  this.calc_idx = function(row_idx,ds_idx) {

+    if ((row_idx>=0) && (row_idx<this.row_cnt)) {

+      if ((ds_idx>=0) && (ds_idx<ds_cnt)){

+	// it is round robin, starting from cur_row+1

+	var real_row_idx=row_idx+this.cur_row+1;

+	if (real_row_idx>=this.row_cnt) real_row_idx-=this.row_cnt;

+	return row_size*real_row_idx+ds_idx*8;

+      } else {

+	throw RangeError("DS idx ("+ row_idx +") out of range [0-" + ds_cnt +").");

+      }

+    } else {

+      throw RangeError("Row idx ("+ row_idx +") out of range [0-" + this.row_cnt +").");

+    }	

+  }

+}

+

+RRDRRA.prototype.getIdx = function() {

+  return this.rra_info.getIdx();

+}

+

+// Get number of rows/columns

+RRDRRA.prototype.getNrRows = function() {

+  return this.row_cnt;

+}

+RRDRRA.prototype.getNrDSs = function() {

+  return this.ds_cnt;

+}

+

+// Get RRA step (expressed in seconds)

+RRDRRA.prototype.getStep = function() {

+  return this.rra_info.getStep();

+}

+

+// Get consolidation function name

+RRDRRA.prototype.getCFName = function() {

+  return this.rra_info.getCFName();

+}

+

+RRDRRA.prototype.getEl = function(row_idx,ds_idx) {

+  return this.rrd_data.getDoubleAt(this.base_rrd_db_idx+this.calc_idx(row_idx,ds_idx));

+}

+

+// Low precision version of getEl

+// Uses getFastDoubleAt

+RRDRRA.prototype.getElFast = function(row_idx,ds_idx) {

+  return this.rrd_data.getFastDoubleAt(this.base_rrd_db_idx+this.calc_idx(row_idx,ds_idx));

+}

+

+// ============================================================

+// RRD Header handling class

+function RRDHeader(rrd_data) {

+  this.rrd_data=rrd_data;

+  this.validate_rrd();

+  this.calc_idxs();

+}

+

+// Internal, used for initialization

+RRDHeader.prototype.validate_rrd = function() {

+  if (this.rrd_data.getLength()<1) throw new InvalidRRD("Empty file.");

+  if (this.rrd_data.getLength()<16) throw new InvalidRRD("File too short.");

+  if (this.rrd_data.getCStringAt(0,4)!=="RRD") throw new InvalidRRD("Wrong magic id.");

+

+  this.rrd_version=this.rrd_data.getCStringAt(4,5);

+  if ((this.rrd_version!=="0003")&&(this.rrd_version!=="0004")&&(this.rrd_version!=="0001")) {

+    throw new InvalidRRD("Unsupported RRD version "+this.rrd_version+".");

+  }

+

+  this.float_width=8;

+  if (this.rrd_data.getLongAt(12)==0) {

+    // not a double here... likely 64 bit

+    this.float_align=8;

+    if (! (this.rrd_data.getDoubleAt(16)==8.642135e+130)) {

+      // uhm... wrong endian?

+      this.rrd_data.switch_endian=true;

+    }

+    if (this.rrd_data.getDoubleAt(16)==8.642135e+130) {

+      // now, is it all 64bit or only float 64 bit?

+      if (this.rrd_data.getLongAt(28)==0) {

+	// true 64 bit align

+	this.int_align=8;

+	this.int_width=8;

+      } else {

+	// integers are 32bit aligned

+	this.int_align=4;

+	this.int_width=4;

+      }

+    } else {

+      throw new InvalidRRD("Magic float not found at 16.");

+    }

+  } else {

+    /// should be 32 bit alignment

+    if (! (this.rrd_data.getDoubleAt(12)==8.642135e+130)) {

+      // uhm... wrong endian?

+      this.rrd_data.switch_endian=true;

+    }

+    if (this.rrd_data.getDoubleAt(12)==8.642135e+130) {

+      this.float_align=4;

+      this.int_align=4;

+      this.int_width=4;

+    } else {

+      throw new InvalidRRD("Magic float not found at 12.");

+    }

+  }

+  this.unival_width=this.float_width;

+  this.unival_align=this.float_align;

+

+  // process the header here, since I need it for validation

+

+  // char magic[4], char version[5], double magic_float

+

+  // long ds_cnt, long rra_cnt, long pdp_step, unival par[10]

+  this.ds_cnt_idx=Math.ceil((4+5)/this.float_align)*this.float_align+this.float_width;

+  this.rra_cnt_idx=this.ds_cnt_idx+this.int_width;

+  this.pdp_step_idx=this.rra_cnt_idx+this.int_width;

+

+  //always get only the low 32 bits, the high 32 on 64 bit archs should always be 0

+  this.ds_cnt=this.rrd_data.getLongAt(this.ds_cnt_idx);

+  if (this.ds_cnt<1) {

+    throw new InvalidRRD("ds count less than 1.");

+  }

+

+  this.rra_cnt=this.rrd_data.getLongAt(this.rra_cnt_idx);

+  if (this.ds_cnt<1) {

+    throw new InvalidRRD("rra count less than 1.");

+  }

+

+  this.pdp_step=this.rrd_data.getLongAt(this.pdp_step_idx);

+  if (this.pdp_step<1) {

+    throw new InvalidRRD("pdp step less than 1.");

+  }

+

+  // best guess, assuming no weird align problems

+  this.top_header_size=Math.ceil((this.pdp_step_idx+this.int_width)/this.unival_align)*this.unival_align+10*this.unival_width;

+  var t=this.rrd_data.getLongAt(this.top_header_size);

+  if (t==0) {

+    throw new InvalidRRD("Could not find first DS name.");

+  }

+}

+

+// Internal, used for initialization

+RRDHeader.prototype.calc_idxs = function() {

+  this.ds_def_idx=this.top_header_size;

+  // char ds_nam[20], char dst[20], unival par[10]

+  this.ds_el_size=Math.ceil((20+20)/this.unival_align)*this.unival_align+10*this.unival_width;

+

+  this.rra_def_idx=this.ds_def_idx+this.ds_el_size*this.ds_cnt;

+  // char cf_nam[20], uint row_cnt, uint pdp_cnt, unival par[10]

+  this.row_cnt_idx=Math.ceil(20/this.int_align)*this.int_align;

+  this.rra_def_el_size=Math.ceil((this.row_cnt_idx+2*this.int_width)/this.unival_align)*this.unival_align+10*this.unival_width;

+

+  this.live_head_idx=this.rra_def_idx+this.rra_def_el_size*this.rra_cnt;

+  // time_t last_up, int last_up_usec

+  this.live_head_size=2*this.int_width;

+

+  this.pdp_prep_idx=this.live_head_idx+this.live_head_size;

+  // char last_ds[30], unival scratch[10]

+  this.pdp_prep_el_size=Math.ceil(30/this.unival_align)*this.unival_align+10*this.unival_width;

+

+  this.cdp_prep_idx=this.pdp_prep_idx+this.pdp_prep_el_size*this.ds_cnt;

+  // unival scratch[10]

+  this.cdp_prep_el_size=10*this.unival_width;

+

+  this.rra_ptr_idx=this.cdp_prep_idx+this.cdp_prep_el_size*this.ds_cnt*this.rra_cnt;

+  // uint cur_row

+  this.rra_ptr_el_size=1*this.int_width;

+  

+  this.header_size=this.rra_ptr_idx+this.rra_ptr_el_size*this.rra_cnt;

+}

+

+// Optional initialization

+// Read and calculate row counts

+RRDHeader.prototype.load_row_cnts = function() {

+  this.rra_def_row_cnts=[];

+  this.rra_def_row_cnt_sums=[]; // how many rows before me

+  for (var i=0; i<this.rra_cnt; i++) {

+    this.rra_def_row_cnts[i]=this.rrd_data.getLongAt(this.rra_def_idx+i*this.rra_def_el_size+this.row_cnt_idx,false);

+    if (i==0) {

+      this.rra_def_row_cnt_sums[i]=0;

+    } else {

+      this.rra_def_row_cnt_sums[i]=this.rra_def_row_cnt_sums[i-1]+this.rra_def_row_cnts[i-1];

+    }

+  }

+}

+

+// ---------------------------

+// Start of user functions

+

+RRDHeader.prototype.getMinStep = function() {

+  return this.pdp_step;

+}

+RRDHeader.prototype.getLastUpdate = function() {

+  return this.rrd_data.getLongAt(this.live_head_idx,false);

+}

+

+RRDHeader.prototype.getNrDSs = function() {

+  return this.ds_cnt;

+}

+RRDHeader.prototype.getDSNames = function() {

+  var ds_names=[]

+  for (var idx=0; idx<this.ds_cnt; idx++) {

+    var ds=this.getDSbyIdx(idx);

+    var ds_name=ds.getName()

+    ds_names.push(ds_name);

+  }

+  return ds_names;

+}

+RRDHeader.prototype.getDSbyIdx = function(idx) {

+  if ((idx>=0) && (idx<this.ds_cnt)) {

+    return new RRDDS(this.rrd_data,this.ds_def_idx+this.ds_el_size*idx,idx);

+  } else {

+    throw RangeError("DS idx ("+ idx +") out of range [0-" + this.ds_cnt +").");

+  }	

+}

+RRDHeader.prototype.getDSbyName = function(name) {

+  for (var idx=0; idx<this.ds_cnt; idx++) {

+    var ds=this.getDSbyIdx(idx);

+    var ds_name=ds.getName()

+    if (ds_name==name)

+      return ds;

+  }

+  throw RangeError("DS name "+ name +" unknown.");

+}

+

+RRDHeader.prototype.getNrRRAs = function() {

+  return this.rra_cnt;

+}

+RRDHeader.prototype.getRRAInfo = function(idx) {

+  if ((idx>=0) && (idx<this.rra_cnt)) {

+    return new RRDRRAInfo(this.rrd_data,

+			  this.rra_def_idx+idx*this.rra_def_el_size,

+			  this.int_align,this.rra_def_row_cnts[idx],this.pdp_step,

+			  idx);

+  } else {

+    throw RangeError("RRA idx ("+ idx +") out of range [0-" + this.rra_cnt +").");

+  }	

+}

+

+// ============================================================

+// RRDFile class

+//   Given a BinaryFile, gives access to the RRD archive fields

+// 

+// Arguments:

+//   bf must be an object compatible with the BinaryFile interface

+//   file_options - currently no semantics... introduced for future expandability

+function RRDFile(bf,file_options) {

+  this.file_options=file_options;

+

+  var rrd_data=bf

+

+  this.rrd_header=new RRDHeader(rrd_data);

+  this.rrd_header.load_row_cnts();

+

+  // ===================================

+  // Start of user functions

+

+  this.getMinStep = function() {

+    return this.rrd_header.getMinStep();

+  }

+  this.getLastUpdate = function() {

+    return this.rrd_header.getLastUpdate();

+  }

+

+  this.getNrDSs = function() {

+    return this.rrd_header.getNrDSs();

+  }

+  this.getDSNames = function() {

+    return this.rrd_header.getDSNames();

+  }

+  this.getDS = function(id) {

+    if (typeof id == "number") {

+      return this.rrd_header.getDSbyIdx(id);

+    } else {

+      return this.rrd_header.getDSbyName(id);

+    }

+  }

+

+  this.getNrRRAs = function() {

+    return this.rrd_header.getNrRRAs();

+  }

+

+  this.getRRAInfo = function(idx) {

+    return this.rrd_header.getRRAInfo(idx);

+  }

+

+  this.getRRA = function(idx) {

+    rra_info=this.rrd_header.getRRAInfo(idx);

+    return new RRDRRA(rrd_data,

+		      this.rrd_header.rra_ptr_idx+idx*this.rrd_header.rra_ptr_el_size,

+		      rra_info,

+		      this.rrd_header.header_size,

+		      this.rrd_header.rra_def_row_cnt_sums[idx],

+		      this.rrd_header.ds_cnt);

+  }

+

+}