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PStrings in C
Volume Number:3
Issue Number:11
Column Tag:Programmer's Workshop

Pascal String Library for C

By Troy Clark, PO Box 2647, Carefree, AZ 85377

Breaking away from C strings and the Stdio Library

Many Mac C programmers use C style strings in order to remain compatible with the Stdio library which provides several commonly needed functions. Unfortunately, C strings are incompatible with virtually all the ROM routines that take strings as arguments. I will point out the draw backs to the most common solution to this compatibility problem and then discuss how to eliminate it altogether.

In this process, I will show you how to create libraries of code in such a way as to allow LightspeedC to link only the code that was actually used, as well as give you examples of how to use Apple’s SANE, Str2Dec and Dec2Str libraries. I will also demonstrate how to write functions in C that take a variable number of arguments. More importantly, I have provided the source for a complete Pascal String Library.

Need for a Pascal String Library

The easiest way around the string compatibility problem is to use the MacTraps routines CtoPstr() and PtoCstr() to convert back and fourth between C and Pascal strings at run time. However, using these extra function calls will increase the size of your code and may hinder your application’s overall performance since it takes time to do the conversions. Including the Stdio library adds approxiamtely 16K to your application alone. Couple this fact with the string conversion overhead neccessary to stay on speaking terms with the ROM, and you’ve got a real mess!

You could eliminate the problem altogether by using Pascal strings, exclusively. This implies having to write your own code as a functional replacement for the Stdio library. How dependent are you on the Stdio? Since getchar() and printf() are next to useless in the Mac environment, there are really only two areas of concern--file and Pascal string handling.

Reading the File Manager chapter of Inside Macintosh will get your wheels rolling in the file handling department. It is very easy to create, delete, open, close, read and write files using the ROM routines. If you need examples of how to use the routines and you can’t find them anywhere else, you can always dig through the Stdio’s source code. Yes--even the Stdio uses the ROM! Implementing a high quality Pascal String Library is not as easy, so I have taken this burden off your shoulders by providing one for you.

Writing the functions to draw, copy, concatenate and search Pascal strings was fairly straight forward. It is important to remember that type ‘char’ is actually a signed quantity and that character values greater than 127 will be considered negative. I got around this “feature” by declaring all Pascal string arguments as ‘unsigned char *’ (i.e. a pointer to an unsigned char). The signed quantity issue was particiliarly important for the PStrFind functions which take ‘char’s as arguments. Since all K&R standard C compilers convert ‘char’s to ‘int’s before passing them to a function, I declared the argument as type ‘int’ within the function definition and then manually stripped the sign extension off via: int_var &= 0xFF;

Fig. 1 Demo shows how to use the string library

Immediate char values such as ‘•’ DO NOT get sign extended! During a few moments of carelessness, you could easily write a function that works correctly with ‘immediate’ character arguments, but FAILS when tested with ‘char’ type arguments! Note that sign extension of type ‘char’ (i.e. or any other signed type) occurs BEFORE a cast takes affect, so casting type ‘char’ to type ‘unsigned int’ for example will not solve the problem.

(In hopes of reducing redundant expressions, I will henceforth substitute “standard type” in place of “type int, long, float, short double and double”)

Writing the functions to: 1) create a Pascal string representation of any standard type of number. 2) set the value of any standard type of number to the value represented in a Pascal string--was far more challenging. Rather than writing seperate functions for each type of number, I wrote two functions capable of operating on any standard type. This was made possible by using the SANE, Dec2Str and Str2Dec libraries!

SANE Contributions

There are two structures defined in the sane.h file which you need to be aware of in order to understand these libraries. Decimal structures are used to store decimal string representations of numeric values in up to 20 digits of precision. DecForm structures are used to specify the number of significant digits and whether you want a FLOATDECIMAL (i.e. scientific notation) or FIXEDDECIMAL (i.e. decimal) representation of a value.

SANE provides procedures to set a Decimal structure equal to the value of any standard type of number, as well as procedures to set the value of any standard type of number equal to a Decimal record. The Dec2Str library provides a procedure to create a Pascal string representation of a value in a Decimal structure according to the settings of a DecForm structure. The Str2Dec library provides a procedure to set a Decimal structure to the value represented in a Pascal string. These procedures are documented in the Apple Numerics Manual. I used them to create the PStr2Num() and Num2PStr() functions listed below--notice how little code was required!

Functions with Variable Arguments

LightspeedC generates code that uses a calling convention designed to allow programmers to write functions accepting a variable number of arguments:

;  High memory
;  Callers Code looks like this
 MOVE  . . ., -(SP)     ;  last argument
 . . .
 MOVE  . . ., -(SP)     ;  first argument
 JSR    function
 ADD   #. . ., -(SP)    ;  total size of arguments

;  Functions’s code looks like this
 LINK   A6, #. . .      ;  (optional)
 . . . 
 MOVE  . . ., D0        ;  result
 UNLK  A6               ;  (optional)
; Low memory

The first argument passed to a function is always in the same location relative to the stack pointer (register A7) regardless of how many additional arguments are supplied. Thus, all the arguments can be found by adding positive offsets to the address of the first which is usually an integer specifying how many arguments are to follow. The responsiblity of removing the arguments from the stack lies with the party that knows how many arguments were actualy passed--the caller. The PStrCat() and ShowVars() listed below are examples of functions written to accept a variable number of arguments. In LightspeedC, the maximum number of arguments is 31.

Fooling LS C into using Strip-able Code Libraries

LightspeedC’s linker considers libraries built with ‘Build Library...’ command as ATOMIC code units. If any code is used then the ALL the code gets linked! If a library is itself a project, however, then all the source files and libraries with in it are individually eligible for removal. This is the key to creating ‘strip-able’ code libraries in LightSpeed C! All you have to do is: 1) create a seperate source file for each function 2) create a new project and add all the files 3) compile the files. You can now consider this project a ‘libary’ and include it in any other project you want.

String Library Demo Shows How to Use It!

I have also provide the source for an application that DEMO’s the Pascal String Library. It’s basically an online tutorial that explains the ‘how to’s and ‘results of’ using each function in the library.

You can find stuff like this only in MacTutor! I would like to thank David Smith for allowing me to share this information with you. Until next time...

/*    File: PStrLib.h           */

#ifndef _PStrLib_
 #define_PStrLib_
 #ifndef _WindowMgr_
 #include <WindowMgr.h>
 #endif
 #ifndef _FontMgr_
 #include <FontMgr.h>
 #endif
 #ifndef _saneh_
 #include <sane.h>
 #endif
 extern char _char[];
 #defineBOOL1
 #defineCDBLFFEXT
 #defineCSHORTDBLFFDBL
 #defineCFLOAT   FFSGL
 #defineCINTFFINT
 #defineCLONG    FFLNG
 #defineCCOMP    FFCOMP
 #definePSTR2
 #defineDEC FIXEDDECIMAL
 #defineSCI FLOATDECIMAL
 #defineALL 255
 #defineNIL 0L
 #defineCEN (-1)
 #defineNL1 (-1)
 #defineNL2 (-2)
 #defineCUR (-3)
 #defineplain    ‘’
 #define  _alpha 1
 #define  _digit 2
 #define  _hex   4
 #define  _octal 8
 #define_ascii   16
 #define_cntrl   32
 #define  _punct 64
 #define  _space 128
/* 
The c character passed to the macros below should be’declared as’ or 
‘cast to’ type ‘Byte’ or ‘unsigned char’. Type char gets sign extended 
to an integer. Thus, when c > 127 the _char[] subscript becomes negative! 
 Note that immediate chars such as ‘•’ do not get sign extended so they’re 
okay.
*/
#define IsAlphaNum(c) (_char[(c)+1]&(_alpha|_digit))
 #defineIsAlpha(c) (_char[(c)+1]&_alpha)
 #defineIsAscii(c) (_char[(c)+1]&_ascii)
 #defineIsCntrl(c) (_char[(c)+1]&_cntrl)
#define IsCSym(c) ((_char[(c)+1]&(_alpha|_digit))||(c)==’_’)
#define IsCSymF(c) ((_char[(c)+1]&_alpha)||(c)==’_’)
 #define  IsDigit(c) (_char[(c)+1]&_digit)
 #defineIsGraph(c) ((c)>=’!’&&(c)<=’~’)
 #defineIsOctDigit(c)(_char[(c)+1]&_octal)
 #defineIsPrint(c) ((c)>=32&&(c)<=255)
 #defineIsPunct(c) (_char[(c)+1]&_punct)
 #defineIsSpace(c) (_char[(c)+1]&_space)
 #defineIsHexDigit(c)(_char[(c)+1]&_hex)
#endif
/*    FILE:  macros_char.c
 Contains _char[] used by macros in PStrLib.h */
#include“PStrLib.h”

char _char[257] =
{/* char masks allow for efficient macros */
 0, _cntrl|_ascii, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii|_space, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii|_space, _cntrl|_ascii|_space,
 _cntrl|_ascii|_space, _cntrl|_ascii|_space,
 _cntrl|_ascii|_space, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii, _cntrl|_ascii, _cntrl|_ascii,
 _cntrl|_ascii, _space|_ascii, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _digit|_hex|_octal|_ascii,
 _digit|_hex|_octal|_ascii, _digit|_hex|_octal|_ascii,
 _digit|_hex|_octal|_ascii, _digit|_hex|_octal|_ascii,
 _digit|_hex|_octal|_ascii, _digit|_hex|_octal|_ascii,
 _digit|_hex|_octal|_ascii, _digit|_hex|_ascii,
 _digit|_hex|_ascii, _ascii|_punct, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _alpha|_hex|_ascii,
 _alpha|_hex|_ascii, _alpha|_hex|_ascii,
 _alpha|_hex|_ascii, _alpha|_hex|_ascii,
 _alpha|_hex|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _alpha|_ascii|_hex, _alpha|_ascii|_hex,
 _alpha|_ascii|_hex, _alpha|_ascii|_hex,
 _alpha|_ascii|_hex, _alpha|_ascii|_hex,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _alpha|_ascii,
 _alpha|_ascii, _alpha|_ascii, _ascii|_punct,
 _ascii|_punct, _ascii|_punct, _ascii|_punct,
 _cntrl|_ascii,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
/*    FILE:   Num2PStr.c    
 Creates a pascal string rep of a given type of 
 number, returning TRUE if it fails to do so. */
#include“PStrLib.h”

Num2PStr(type, numPtr, pStr, format, places)
inttype;/* type of var pointed at by numPtr */
void  *numPtr; /* size of *numPtr depends on type */
register char  *pStr;/* points to a PASCAL string */           
int   format;  /* specifies Dec or Sci notation */
intplaces;/* # digits to right of Dec point */
{
 auto   Decimal  _Decimal_;
 auto   DecForm  _DecForm_;
 register int    n = 1;
 
/* 
NOTE: When Dec2Str() fails, it sets pStr == ‘?’. The most common cause 
of failure is trying to convert a large number to DEC string format using 
a large places value. The do-while loop below catches such failures and 
fixes them by changing the format to SCI which virtually never fails 
(See the Apple Numerics Manual for more details).  
*/ 
 do {
 _DecForm_.style = n > 0 ? format : FLOATDECIMAL;
 _DecForm_.digits = format == FLOATDECIMAL ? places + 1 : places;
   fp68k(&_DecForm_, numPtr, &_Decimal_, type + FOB2D);
   Dec2Str(_DecForm_, &_Decimal_, pStr);
 } while (pStr[1] == ‘?’ && --n >= 0);
Kreturn(pStr[1] == ‘?’); /* Ret TRUE if Dec2Str() FAILED */
}
/*    FILE:   PStr2Num.c
 Sets value of a given type of number based on a pascal string representation, 
returning TRUE if it fails to do so. */
#include“PStrLib.h”

PStr2Num(pStr, type, numPtr)
char  *pStr;/* points to a PASCAL string */        
inttype;/* type of variable n points at */
void  *numPtr; /* generic pointer */
{
 auto Decimal  _decimal_;
 auto int valid, index = 1; 
 /* start-scan pos. of pStr */
 
 Str2Dec(pStr, &index, &_decimal_, &valid);
 fp68k(&_decimal_, numPtr, type + FOD2B);
 return(!valid); /*returns TRUE if failed */
}
/*    FILE:   PStrCat.c
 Concatenates 2-30 Pascal strings. */
#include“PStrLib.h”

PStrCat(count, dst)  
register intcount; /* # of strings (including dst) */
unsigned char  *dst; /* destination pascal string */
{
 register unsigned char *dstPtr, *srcPtr;
 register unsigned char **argList = &dst;
 register int     argLen, totLen;
 
 if ((totLen = *dst) < 255) {
 if (count > 30)
 count = 30;/* max. # of string args 30 */
 dstPtr = dst + totLen; 
 /* dstPtr = 1 past end of dst */
 while (--count > 0 && totLen < 255) {
 srcPtr = *++argList;
 argLen = srcPtr[0];
 if (totLen + argLen > 255)
 argLen = 255 - totLen;
 /* max totLen = 255 */
 totLen += argLen; 
 while (--argLen >= 0)  /* add arg’s char to dst */
 *++dstPtr = *++srcPtr;   
 }
 dst[0] = totLen;/* sets length of dst */
 }
}
/*    FILE:   PStrCmp.c
 Compares src to dst returning <0 less than, =0 equal, >0 greater */
#include“PStrLib.h”

PStrCmp(src, dst)
register unsigned char  *src, *dst; /* Pascal strings */
{
 register int    slen = *src, dlen = *dst;
 register int    mlen = *src <= *dst ? *src : *dst;
 
 while (--mlen >= 0 && *++src == *++dst);
 return(((slen != dlen && *src == *dst) ? slen - dlen : *src - *dst));
}
/*    FILE:   PStrCopy.c
 Copys count char from pos of src to dst. */
#include“PStrLib.h”

PStrCopy(src, pos, count, dst)
register unsigned char  *src, *dst; /* Pascal strings */
register intpos, count;
{
 register int    max;
 
 --pos;
 if (count > (max = *src - pos))   
 count = max;
 src += pos;
 *dst = count;
 while (--count >= 0) *++dst = *++src;
}
/*    FILE:   PStrDel.c
 Deletes count chars from pos of dst. */
#include“PStrLib.h”

PStrDel(s, pos, count)
register unsigned char  *s; /* Pascal string */
register intpos, count;
{
 register unsigned char *t;
 register int    shift;
 
 if (*s) {
 if (--pos + count > *s)
 count = *s - pos;
 shift = *s - pos;
 *s -= count;
 s += pos;
 t = s + count;
 while (--shift >= 0)
 *++s = *++t;
 }
}
/*    FILE:  PStrDraw.c
 Draws 1 to 10 Pascal strings at specified locations in the current GrafPort. 
 It Offers auto-centering and New-Line modes. If h == 0 then it uses 
the last (current) h position. If v == 0 then it uses the last (current) 
v position. If x < 0 then s is centered inside the portRect.  If y < 
0 then it offsets -y number of lines from current v pos. Otherwise, h 
and v represent the desired x and y coordinates. */
#include“PStrLib.h”

PStrDraw(count, s, h, v)
intcount; /* number of { s, h, v} sets to follow */
char  *s; /* a pascal string to draw */
inth;   /* horizontal position */
intv;   /* vertical position */
{
 register char *argPtr = (char *)&count;
 register char *sp;
 register Rect *rp = &thePort->portRect;
 register int    x, y, lineHeight = 1.5 * thePort->txSize;
 static int old_x = 0, old_y = 0;
 
 while (--count >= 0) {
 sp = *(char **)(argPtr += 2);
 x = *(int *)(argPtr += 4);
 y = *(int *)(argPtr += 2);
 if (x >= 0)
 old_x = x;
 else if (x != CUR)/* Auto-Center Mode? */
   old_x = (rp->right - rp->left - StringWidth(sp)) / 2;
 if (y >= 0)
 old_y = y;
 else if (y != CUR)/* New-Line Mode? */
 old_y += -y * lineHeight;
 MoveTo(old_x, old_y);
 DrawString(sp);
 old_x += StringWidth(sp);
 }
}
/*    FILE:   PStrFind.c
 Finds first occurance of p in t. */
#include“PStrLib.h”

PStrFind(p, t, pos)  
unsigned char  *p, *t;  /* Pascal strings */
register intpos; /* char pos to start search  */
{/* range of pos: 1 to 255 */
 register unsigned char *tp = t + pos, *pp = p, *ppe=p + *p;
 register long tpe = (long)(t + *t); /*trick ptr!*/
 
 while (++pp <= ppe && tp <= (unsigned char *)tpe) {
 while (*pp != *tp) {
 tp = t + ++pos; /* tp to next pos in text */
 pp = p + 1;/* sp to start of pattern */
 }
 ++tp;  /* compare next char for match */
 }
 return(pp > ppe ? pos : 0);
 /* 0 if Not Found, else char position in t */
}
/*    FILE:   PStrFindFC.c
 Finds first occurance of c in s. */
#include“PStrLib.h”

PStrFindFC(s, c) 
register unsigned char  *s; /* Pascal string */
register intc;   /* char to find */
{
 register int    n = *s;
 register unsigned char *sp = s;
 
 c &= 0xFF; 
 /* strip sign ext. in case caller was type char */
 while (*++sp != c && --n >= 0);
 return(n >= 0 ? sp - s : 0);
}/* Result: 0 if Not Found, else char position */
/*    FILE:   PStrFindFNS.c
 Finds first occurance in s NOT in set. */
#include“PStrLib.h”

PStrFindFNS(s, set)  
unsigned char  *s, *set;  /* Pascal strings */
{
 register int    i = *s, n;
 register unsigned char *setp, *sp = s;
 
 while (--i >= 0) {
 ++sp;
 setp = set;
 n = *setp;
 while (--n >= 0 && *++setp != *sp);
 if (n < 0) return(sp - s);
 }
 return(0);
}/* Result: 0 if Not Found, else char position */
/*    FILE:   PStrFindFS.c
 Finds first occurance in both s and set. */
#include“PStrLib.h”

PStrFindFS(s, set)
unsigned char  *s, *set;  /* Pascal strings */
{
 register int    i = *s, n;
 register unsigned char *setp, *sp = s;
 
 while (--i >= 0) {
 ++sp;
 setp = set;
 n = *setp;
 while (--n >= 0 && *++setp != *sp);
 if (n >= 0) return(sp - s);
 }
 return(0);
}/* Result: 0 if Not Found, else char position */
/*    FILE:   PStrFindLC.c
 Finds last occurance of c in s. */
#include“PStrLib.h”

PStrFindLC(s, c) 
register unsigned char  *s; /* Pascal string */
register intc;   /* char to find */
{
 register int    n = *s;
 register unsigned char   *sp = s + n + 1;
 
 c &= 0xFF; 
 /* strips sign ext. in case caller was ‘char’ */
 while (*--sp != c && --n >= 0);
 return(sp - s);
}/* Result: 0 if Not Found, else char position */
/*    FILE:   PStrFindLS.c
 Finds last occurance in both s and set. */
#include“PStrLib.h”

PStrFindLS(s, set)
unsigned char  *s, *set;  /* Pascal strings */
{
 register int    i = *s, n;
 register unsigned char *setp, *sp = s + i;

 while (--i >= 0) {
 setp = set;
 n = *setp;
 while (--n >= 0 && *++setp != *sp);
 if (n >= 0) return(sp - s);
 --sp;
 }
 return(0);
}/* Result: 0 if Not Found, else char position */
/*    FILE:   PStrFixLen.c
 Sets length of pascal string s to len by either chopping extra chars 
off or by padding out with c characters. */
#include“PStrLib.h”

PStrFixLen(s, len, c)
registerunsigned char*s;  /* pascal string */
register  int    len;/* max length is 255 */
registerint c;   /* pad character */
{
 register unsigned char *sp = s + *s;
 register int    n;
 
 if (*s < (len &= 0xFF)) {
 n = len - *s;
 while (--n >= 0)  *++sp = c;
 }
 *s = len;
}
/*    FILE:   PStrIns.c
 Inserts src at pos of dst. */
#include“PStrLib.h”

PStrIns(src, dst, pos)
unsigned char    *src;  /* Pascal string */
register unsigned char  *dst; /* Pascal string */
register intpos;
{
 register unsigned char *s, *d;
 register int    len, shift;
 
 if (--pos + *src < 256) {
 len = *src;
 *dst += len;
 shift = *dst - pos;
 s = dst + *dst;
 d = ++s + len;
 while (--shift >= 0)
 *--d = *--s;
 }
 else {
 len = 255 - pos;
 *dst = 255;
 }
 s = dst + pos;
 while (--len >= 0)
 *++s = *++src;
}
/*    FILE:   PStrRep.c
 Replaces count chars from pos of dst with src. */
#include“PStrLib.h”

PStrRep(dst, pos, len, src) 
register char  *dst, *src;/* pascal strings */
register intpos, len;
{
 PStrDel(dst, pos, len);
 PStrIns(src, dst, pos);
}
/*    FILE:  SetFont.c
 Sets the txFont, txSize, txFace fields of the current GrafPort. */
#include“PStrLib.h”

SetFont(font, size, face)
intfont, size;
Style face;
{
 TextFont(font);
 TextSize(size);
 TextFace(face);
}
/*    FILE:   ShowVars.c 
 Displays up to 10 sets of variable labels and values.  */
#include“PStrLib.h”

ShowVars(count, varLabel, varType, varPtr)   
intcount; /* # of {varLabel,varType,varPtr} sets */
char  *varLabel; /* string label for variable */
intvarType; /* type of variable*/
char  *varPtr;   /* pointer to variable */
{
auto  char**lh = &varLabel; /* Ptr 1st varLabel */
auto  int *tp = &varType; /* Ptr to 1st varType */
auto  char**vh = &varPtr; /* Ptr to 1st varPtr */
auto  char*sp;
auto  Str255s;
auto  RectwRect;
auto  WindowPtr  wp, savedPort;
auto  int y = 5;
 
 if (count > 0) {
 if (count > 10)
 count = 10;/* max number of arg. sets */
 GetPort(&savedPort);
 wRect.top = 45;
 wRect.left = 72;
 wRect.bottom = count * 20 + wRect.top + 45;
 wRect.right = 440;
 wp = NewWindow(NIL, &wRect, NIL, TRUE, dBoxProc, -1L, FALSE, NIL);
 SetPort(wp);
 while (--count >= 0) {
 if (*tp == PSTR)
 sp = *vh;
 else if (*tp == BOOL)
 sp = **(Boolean **)vh ? “\pTRUE” : “\pFALSE”;
 else {
 sp = (char *)s;
 Num2PStr(*tp, *vh, sp, DEC, (*tp >= CINT ? 0 : 6));
 }
 MoveTo(30, y += 20);
 if (*lh && **lh){ /* Length varLabel > 0? */
 DrawString(*lh);
 DrawString(“\p = “);
 }
 DrawString(sp);
 /*  
 Incr. Ptr’s 10 bytes each pass so they’ll
 point to the next set of arg.s on the stack.
 */

 lh = (char **)((char *)lh + 10);
 tp += 5;
 vh = (char **)((char *)vh + 10);
 }
 MoveTo(30, wRect.bottom - wRect.top - 10);
 DrawString(“\pClick Mouse Button to Continue...”);
 while (!Button());/* Wait for a mouse down event */
 DisposeWindow(wp);
 SetPort(savedPort);
 }
}
 

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Love pirates and board games? Well, you'll love the new Pirate Attack themed update that just launched in Game of Dice. It adds a bunch of new content themed around pirates, like an all new event map based on a pirate ship which revamps the toll... | Read more »
Splash Cars guide - How to paint the tow...
Splash Cars is an arcade driving game that feels like a hybrid between Dawn of the Plow and Splatoon. In it, you'll need to drive a car around to repaint areas of a town that have lost all of their color. Check out these tips to help you perform... | Read more »
The best video player on mobile
We all know the stock video player on iOS is not particularly convenient, primarily because it asks us to hook a device up to iTunes to sync video in a world that has things like Netflix. [Read more] | Read more »
Four apps to help improve your Super Bow...
Super Bowl Sunday is upon us, and whether you’re a Panthers or a Broncos fan you’re no doubt gearing up for it. [Read more] | Read more »
LooperSonic (Music)
LooperSonic 1.0 Device: iOS Universal Category: Music Price: $4.99, Version: 1.0 (iTunes) Description: LooperSonic is a multi-track audio looper and recorder that will take your loops to the next level. Use it like a loop pedal to... | Read more »
Space Grunts guide - How to survive
Space Grunts is a fast-paced roguelike from popular iOS developer, Orange Pixel. While it taps into many of the typical roguelike sensibilities, you might still find yourself caught out by a few things. We delved further to find you some helpful... | Read more »
Dreii guide - How to play well with othe...
Dreii is a rather stylish and wonderful puzzle game that’s reminiscent of cooperative games like Journey. If that sounds immensely appealing, then you should immediately get cracking and give it a whirl. We can offer you some tips and tricks on... | Read more »
Kill the Plumber World guide - How to ou...
You already know how to hop around like Mario, but do you know how to defeat him? Those are your marching orders in Kill the Plumber, and it's not always as easy as it looks. Here are some tips to get you started. This is not a seasoned platform... | Read more »

Price Scanner via MacPrices.net

Apple refurbished 15-inch Retina MacBook Pros...
Apple has Certified Refurbished 2015 15″ Retina MacBook Pros available for up to $380 off the cost of new models. An Apple one-year warranty is included with each model, and shipping is free: - 15″ 2... Read more
BookBook For iPad Pro Coming Soon
The iPad Pro is a device unlike any other, and with Apple Pencil, it’s the ideal portable sketchpad: all that’s missing is the modern easel and portfolio to go. TwelveSouth’s BookBook for iPad Pro... Read more
12-inch 1.2GHz Silver Retina MacBook on sale...
B&H Photo has the 12″ 1.2GHz Silver Retina MacBook on sale for $1399 including free shipping plus NY sales tax only. Their price is $200 off MSRP, and it’s the lowest price for this model from... Read more
iPads on sale at Target: $100 off iPad Air 2,...
Target has WiFi iPad Air 2s and iPad mini 4s on sale for up to $100 off MSRP on their online store for a limited time. Choose free shipping or free local store pickup (if available). Sale prices for... Read more
Target offers Apple Watch for $100 off MSRP
Target has Apple Watches on sale for $100 for a limited time. Choose free shipping or free local store pickup (if available). Sale prices for online orders only, in-store prices may vary: - Apple... Read more
Apple refurbished 2014 13-inch Retina MacBook...
Apple has Certified Refurbished 2014 13″ Retina MacBook Pros available for up to $400 off original MSRP, starting at $979. An Apple one-year warranty is included with each model, and shipping is free... Read more
Macs available for up to $300 off MSRP, $20 o...
Purchase a new Mac or iPad using Apple’s Education Store and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free, and... Read more
Watch Super Bowl 50 Live On Your iPad For Fre...
Watch Super Bowl 50 LIVE on the CBS Sports app for iPad and Apple TV. Get the app and then tune in Sunday, February 7, 2016 at 6:30 PM ET to catch every moment of the big game. The CBS Sports app is... Read more
Two-thirds Of All Smart Watches Shipped In 20...
Apple dominated the smart watch market in 2015, accounting for over 12 million units and two-thirds of all shipments according to Canalys market research analysts’ estimates. Samsung returned to... Read more
12-inch 1.2GHz Retina MacBooks on sale for up...
B&H Photo has 12″ 1.2GHz Retina MacBooks on sale for $180 off MSRP. Shipping is free, and B&H charges NY tax only: - 12″ 1.2GHz Gray Retina MacBook: $1499 $100 off MSRP - 12″ 1.2GHz Silver... Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Subject Matter Expert - Experis (Uni...
This position is for an Apple Subject Matter Expert to assist in developing the architecture, support and services for integration of Apple devices into the domain. Read more
*Apple* Macintosh OSX - Net2Source Inc. (Uni...
…: * Work Authorization : * Contact Number(Best time to reach you) : Skills : Apple Macintosh OSX Location : New York, New York. Duartion : 6+ Months The associate would Read more
Computer Operations Technician ll - *Apple*...
# Web Announcement** Apple Technical Liaison**The George Mason University, Information Technology Services (ITS), Technology Support Services, Desktop Support Read more
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