ssVersion:="Equation Library 0.01 by Han Duong";
// colors
ssFG:=#0h;
ssBG:=#FFFFFFh;
ssR:=#FF0000h;
ssG:=#FF00h;
ssB:=#FFh;
// error messages
ssInvDat:="Invalid library data.";
ssNoDat:="Unable to locate library data.";
ssNullName:="Null name not allowed.";
ssInvName:="Invalid name.";
ssAbort:="Operation aborted; improper initialization.";
ssBadVar:="Conflict with existing variable:\n";
ssSubmitBug:="This should never happen!\nPLease submit bug report.";
ssNotEqn:="Non-equation on page ";
ssNonVar:="No such var. on page ";
ssNoLibDat:="No library data found.\nCreating empty library and empty\ninitial system.";
ssEOW:="Overwrite disabled and name already exists:\n";
ssNotSaved:="SAVE CANCELED!";
// app messages
ssTNewVar:="Create/Edit Variable";
ssLName:="Name:";
ssLDescr:="Description:";
ssLOWrite:="Overwrite";
ssHName:="Enter the variable name";
ssHDescr:="Enter a description for the variable";
ssHOWrite:="Overwrite if variable already exists?";
ssTSaveSys:="Save Current System";
ssHSysName:="Enter a name for the system.";
ssLEqns:="Eqns:";
ssLVars:="Vars:";
ssHEqns:="Verify equations in system.";
ssHVars:="Verify variables for system.";
ssTNewSys:="New System";
ssTSettings:="Equation Library Settings";
ssLSaving:="When switching systems, always";
ssCSaving:={ "prompt to save", "save automatically", "discard all changes"};
ssHSaving:="Select default save behavior";
// misc
ssVLoadEqns:="Populating equations in Symb view...";
ssVLoadVars:="Setting up equation variables...";
ssVCheckVars:="Verifying variables in system...";
ssVCheckLibDat:="Verifying library data...";
ssVUpdateEqns:="Equations modified; updating lib data...";
ssVUpdateVars:="Variables modified; updating lib data...";
ssVNoEqns:="(No equations)";
ssVNoVars:="(No variables)";
ssVVarMade:="Created variable: ";
// View menu options
ssTSEP:="Select Equations Page";
ssTSelPage:="Select New Page";
ssTNewPage:="Create New Page";
ssMsgRow;
export ssInit;
ssLibFN;
export ssCurSys;
export ssCurSysIndex;
export ssCurLib;
ssLibSize;
export ssSysTitles;
ssVarKey:="SSVersion";
export ssEqPages;
export ssEqPage;
export ssNullSys;
// DO NOT MODIFY BELOW HERE
ssUpdateSys()
begin
local n;
local eq:="";
// for n from 0 to 9 do
// eq:="E" + string(n,1,0) + ":=" + string("");
// expr(eq);
// end;
if ssLibSize then
ssSysTitles:=makelist(ssCurLib(I,1),I,1,ssLibSize);
else
ssSysTitles:={};
end;
ssEqPages:={1,10};
n:=size(ssCurSys(2));
ssNullSys:=NOT(n);
ssEqPages(1):=ip((n-1)/10);
ssEqPages(2):=(n-1) mod 10;
ssEqPage:=0;
DelAVars(AVars);
end;
ssInitSSApp()
begin
if ssInit then return; end;
ssLibFN:="Equation Library.lib";
ssVarKey:="SSVersion";
iferr
ssCurLib:=AFiles(ssLibFN);
then
msgbox(ssNoLibDat);
ssCurLib:={ { ssTNewSys, {}, {}, {}, {}, {}, {} } };
AFiles(ssLibFN):=ssCurLib;
end;
ssCurSysIndex:=1;
ssCurSys:=ssCurLib(1);
ssLibSize:=size(ssCurLib);
ssUpdateSys();
ssInit:=1;
end;
ssPrint(msg)
begin
textout_p(msg,0,10*ssMsgRow,1,ssFG,320,ssBG);
ssMsgRow:=(ssMsgRow+1) mod 20;
end;
ssError(msg)
begin
textout_p(msg,0,10*ssMsgRow,1,ssR,320,ssBG);
ssMsgRow:=(ssMsgRow+1) mod 20;
end;
ssCheckType(list,t)
begin
local n:=size(list);
if n then
if type(list(n))<>t then return(1); end;
else
return(1);
end;
return(0);
end;
//******************************************
// Library Data format
// { sys1, sys2, ... , sysN }
//
// Each sys (system) is a list of the form
// {
// "Title",
// { "eq1", "eq2", ... },
// { sel1, sel2, ... },
// { "var1", "var2", ... },
// { "des1", "des2", ... },
// { val1, val2, ... },
// { con1, con2, ... }
// }
//
// eq = equation
// sel = 0 or 1 for selection of corresponding
// equation in the system
// var = variable
// des = description of variable
// val = value of corresponding variable
// con = 0 or 1 for whether var is constant
//
// returns 0 if error or 1 if OK
//******************************************
export ssCheckLibDat()
begin
ssPrint(ssVCheckLibDat);
ssInitSSApp();
local syseqs,j,k;
local lib, isbad:=0;
local types:={2,2,0,2,2,0,0};
iferr
if ssLibSize then
for j from 1 to ssLibSize do
lib:=ssCurLib(j);
if type(lib)<>6 then
ssError(ssInvDat); return(0);
else
k:=size(lib);
if (k<1) OR (k>7) then
ssError(ssInvDat); return(0);
end;
for k from 2 to 7 do
if type(lib(k))<>6 then
ssError(ssInvDat); return(0);
end;
if ssCheckType(lib(k),types(k)) then
ssError(ssInvDat); return(0);
end;
end; // for k
end; // if type(lib)
end; // for j
end; // if ssLibSize
then
ssError(ssNoDat); return(0);
end;
return(1);
end;
// initialize variables
ssInitVars()
begin
local varslist:=ssCurSys(4);
local valslist:=ssCurSys(6);
local n:=size(varslist);
local j,tmp,varval;
iferr
if (AVars(ssVarKey) == ssVersion) then
return;
end;
then
// nop
end;
ssPrint(ssVLoadVars);
for j from 1 to n do
varval:=CAS(eval(varslist(j)));
tmp:="purge(" + varslist(j) + ")";
CAS(eval(tmp));
if (CAS(eval(varslist(j))) <> 8) then
msgbox(ssBadVar+varslist(j));
end;
if ( (type(varval) == 0) OR (type(varval) == 3) ) then
AVars(varslist(j)):=varval;
else
AVars(varslist(j)):=valslist(j);
end;
end;
AVars(ssVarKey):=ssVersion;
end;
// checks to see if AVars and system of equations
// vars match; excludes version key
export ssCheckVars()
begin
ssPrint(ssVCheckVars);
ssInitSSApp();
ssInitVars();
local j,n;
local avarlist:=AVars();
local varlist:=ssCurSys(4);
n:=size(varlist);
if (n+1 <> size(avarlist)) then
return(0);
end;
for j from 1 to n do
if (pos(avarlist,varlist(j)) == 0) then return(0); end;
end;
n:=size(avarlist);
for j from 1 to n do
if ((avarlist(j) <> ssVarKey) AND (pos(varlist,avarlist(j)) == 0)) then
return(0);
end;
end;
return(1);
end;
// do we have any equations
// 1: yes, equations in symb view
// 0: no equations at all
// -1: yes, but only saved in library
ssHaveEqns()
begin
local j;
for j from 0 to 9 do
if ISCHECK(j) then return(1); end;
end;
if (ssCurSysIndex == 0) then return(0); end;
if (type(ssCurSys) <> 6) then return(0); end;
if size(ssCurSys) then
if size(ssCurSys(2)) then
return(-1);
else
return(0);
end;
else
return(0);
end;
end;
// UI for creating new variables
ssCreateVar()
begin
local run:=1;
local n;
local varname:="", varinfo:="";
local ow:=0;
ssInitSSApp();
ssInitVars();
while run do
if input(
{
{varname, [2], {30, 65, 0}},
{varinfo, [2], {30, 65, 1}},
{ow, 1, {30,10,2}}
},
ssTNewVar,
{ ssLName, ssLDescr, ssLOWrite },
{ ssHName, ssHDescr, ssHOWrite }
)
then
if size(varname)<1 then
msgbox(ssNullName);
else
n:=pos(AVars,varname);
if n then
if ow then
n:=pos(ssCurSys(4),varname);
ssCurSys(5,n):=varinfo;
run:=0;
else
msgbox(ssEOW + varname);
end;
else
iferr
AVars(varname):=0;
then
msgbox(ssInvName);
else
ssCurSys(4,0):=varname;
ssCurSys(5,0):=varinfo;
ssCurSys(6,0):=0;
ssCurSys(7,0):=0;
msgbox(ssVVarMade + varname);
varname:=""; varinfo:="";
// run:=0;
end;
end;
end; // end null name
else
run:=0;
end;
end; // end while
end;
// save current equations
ssSaveEqns()
begin
local j,k,n1,n2;
local cmd:="";
local oldeqn:="";
local neweqn:="";
local markadd:=0;
local neweqns:={};
local teqnlist:={};
local tsellist:={};
if ssCheckVars() then
ssPrint(ssVLoadEqns);
n1:=ssEqPage*10+1;
if (ssEqPage < ssEqPages(1)) then
n2:=n1+9;
else
n2:=n1+ssEqPages(2);
end;
for j from n1 to n2 do
k:= j mod 10;
cmd:="string(E" + string(k,1,0) + ",1,12)";
iferr
neweqn:=expr(cmd);
then
neweqn:="";
else
if ssNullSys then
oldeqn:="";
else
cmd:="E" + string(k,1,0) + ":=" + string(ssCurSys(2,j));
iferr expr(cmd); then end;
cmd:="string(E" + string(k,1,0) + ",1,12)";
iferr oldeqn:=expr(cmd); then end;
end;
if (oldeqn <> neweqn) then
if ssNullSys then
ssCurSys(2,0):=neweqn;
else
ssCurSys(2,j):=neweqn;
end;
end;
end;
cmd:="E" + string(k,1,0) + ":=" + string(neweqn);
iferr expr(cmd); then
// msgbox(ssSubmitBug);
end;
if ISCHECK(k) then
ssCurSys(3,j):=1;
else
ssCurSys(3,j):=0;
end;
if (size(neweqn) == 0) then
ssCurSys(3,j):=-1; // mark for delete
end;
end; // end for j
n2:=n1+9;
for k from j to n2 do
n1:=k mod 10;
cmd:="string(E" + string(n1,1,0) + ",1,12)";
iferr
neweqn:=expr(cmd);
then
// nop
else
if size(neweqn) then
neweqns(0):=neweqn;
neweqns(0):=ISCHECK(n1);
markadd:=1;
end;
end;
end; // end for k
// rebuilt existing equations
k:=0;
n2:=size(ssCurSys(2));
for j from 1 to n2 do
if (ssCurSys(3,j) >= 0) then
teqnlist(0):=ssCurSys(2,j);
tsellist(0):=ssCurSys(3,j);
k:=k+1;
end;
end;
ssCurSys(2):=teqnlist;
ssCurSys(3):=tsellist;
if markadd then
n2:=size(neweqns)/2;
for j from 1 to n2 do
ssCurSys(2,0):=neweqns(2*j-1);
ssCurSys(3,0):=neweqns(2*j);
k:=k+1;
end;
end;
ssEqPages(1):=ip((k-1)/10);
ssEqPages(2):=(k-1) mod 10;
ssEqPage:=min(max(0,ssEqPage),ssEqPages(1));
if k then
ssNullSys:=0;
else
ssNullSys:=1;
end;
return(1);
else
msgbox(ssAbort);
return(0);
end;
end;
// set up equations in Symb view
export ssLoadSymb()
begin
local j,k,n1,n2;
local cmd:="";
// no equations to populate Symb view?
if ssNullSys then
for j from 0 to 9 do
cmd:="E" + string(j,1,0) + ":=" + string("");
expr(cmd);
end;
return(1);
end;
ssPrint(ssVLoadEqns);
n1:=ssEqPage*10+1;
if (ssEqPage < ssEqPages(1)) then
n2:=n1+9;
else
n2:=n1+ssEqPages(2);
end;
for j from n1 to n2 do
k:= j mod 10;
cmd:="E" + string(k,1,0) + ":=" + string(ssCurSys(2,j));
iferr expr(cmd); then end;
if (ssCurSys(3,j)==1) then CHECK(k); else UNCHECK(k); end;
end;
n2:=n1+9;
for k from j to n2 do
n1:=k mod 10;
cmd:="E" + string(n1,1,0) + ":=" + string("");
expr(cmd);
end;
return(1);
end;
// select an equations page
ssSelectEqPage()
begin
ssInitSSApp();
local j;
local n:=ssEqPages(1)+1;
local page:=ssEqPage+1;
local curpage:=page;
local pagelist:={};
local title:="[" + string(page,1,0) + "/" + string(ssEqPages(1)+1,1,0) + "] " + ssTSelPage;
pagelist:=makelist(j,j,1,n);
pagelist(0):=ssTNewPage;
if choose(page,title,pagelist) then
if (curpage <> page) then
ssSaveEqns();
if (page == (n+1)) then
if (ssNullSys == 0) then
ssEqPages(1):=n+1;
// fill last page
if (ssEqPages(2) < 9) then
n:=9-ssEqPages(2);
for j from 1 to n do
ssCurSys(2,0):="";
ssCurSys(3,0):=-1; // mark for deletion
end;
end;
end;
// create new page
for j from 1 to 10 do
ssCurSys(2,0):="";
ssCurSys(3,0):=-1; // mark for deletion
end;
n:=size(ssCurSys(2));
ssEqPage:=ip((n-1)/10);
ssEqPages(1):=ssEqPage;
ssEqPages(2):=(n-1) mod 10;
ssNullSys:=0;
else
// not creating new blank page
ssEqPage:=min(max(0,page-1),ssEqPages(1));
end; // if newpage or existing page
end; // if selpage <> page
ssLoadSymb();
end; // if choose
end;
// set new system
export ssSetNewSys(n)
begin
if (n == ssCurSysIndex) then
return(1);
end;
if (n > ssLibSize) then
return(0);
end;
ssCurSysIndex:=n;
ssCurSys:=ssCurLib(n);
ssUpdateSys();
ssInitVars();
ssLoadSymb();
end;
ssErrorPage(n,msg,eqn)
begin
local p:=ip((n-1)/10)+1;
msgbox(msg + n + ":\n" + eqn);
end;
// check if equations are valid
// assumes equations have been saved
export ssCheckEqns()
begin
local n:=size(ssCurSys(2));
local eqn:="";
local j,k,v;
local varlist:={};
if n then
// check each equation
for j from 1 to n do
eqn:=ssCurSys(2,j);
// do we have = symbol?
if instring(eqn,"=") then
iferr eqn:=string(E0,1,12); then eqn:=""; end;
E0:=ssCurSys(2,j);
varlist:=LNAME(E0);
v:=size(varlist);
if v then
for k from 1 to v do
if (pos(ssCurSys(4),string(varlist(k))) == 0) then
ssErrorPage(j,ssNonVar,ssCurSys(2,j)+"\n> "+varlist(k));
return(0);
end;
end;
else
// constants only? not equation
ssErrorPage(j,ssNotEqn,ssCurSys(2,j));
return(0);
end;
iferr E0:=eqn; then end;
return(1);
else
// no equal symbol; report page
ssErrorPage(j,ssNotEqn,eqn);
return(0);
end;
end;
else
// no equations to check
return(1);
end;
end;
// save current system
// no null names but does not check
// if name is all spaces
ssSaveSystem()
begin
local sysname:=ssCurSys(1);
local eqns:=ssCurSys(2);
local vars:=ssCurSys(4);
local eqn,var,n;
local run:=1;
// bug in input when choose lists are empty
if (size(eqns) < 1) then eqns:={ ssVNoEqns }; end;
if (size(vars) < 1) then vars:={ ssVNoVars }; end;
while run do
if input(
{
{ sysname, [2], { 15, 75, 0 } },
{ eqn, eqns, { 15, 75, 1 } },
{ var, vars, { 15, 75, 2 } }
},
ssTSaveSys,
{ ssLName, ssLEqns, ssLVars },
{ ssHSysName, ssHEqns, ssHVars }
)
then
if size(sysname) then
// maybe later add check for dupes
n:=pos(ssSysTitles, sysname);
if ssCheckEqns() then
ssCurSys(1):=sysname;
ssCurLib(ssCurSysIndex):=ssCurSys;
AFiles(ssLibFN):=ssCurLib;
else
msgbox(ssNotSaved);
end;
run:=0;
else
msgbox(ssNullName);
end;
else
// user canceled
msgbox(ssNotSaved);
run:=0;
end;
end; // end while;
end;
// create a system
ssNewSystem()
begin
ssCurSys:={ssTNewSys, {}, {}, {}, {}, {}, {} };
ssCurLib(0):=ssCurSys;
ssCurSysIndex:=ssCurSysIndex + 1;
ssLibSize:=ssLibSize + 1;
ssUpdateSys();
ssInitVars();
ssLoadSymb();
startview(0,1);
end;
START()
begin
// startview(-1,1);
ssInitSSApp();
ssInitVars();
ssLoadSymb();
startview(0,1);
end;
Symb()
begin
ssSaveEqns();
ssLoadSymb();
startview(0,1);
end;
// select equations page (View Menu)
view "Select Page", ssMenuEqnPage()
begin
ssSelectEqPage();
startview(0,1);
end;
// UI for creating new variables (View Menu)
view "Add/Edit Variable", ssMenuNewVar()
begin
ssCreateVar();
end;
// reload saved equations (View Menu)
view "Restore Equations", ssMenuLoadEqns()
begin
ssLoadSymb();
startview(0,1);
end;
// save current system (View Menu)
view "Save System", ssMenuSaveSys()
begin
ssSaveEqns();
ssSaveSystem();
end;
// create new system (View Menu)
view "New System", ssMenuNewSys()
begin
ssNewSystem();
end;
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Creating an equation library (Updated 03-FEB-2017)
