ProfitPress Mega CDROM2 Shareware Freeware (MSDOS)(1992)(Eng)

home *** CD-ROM | disk | FTP | other *** search

/ ProfitPress Mega CDROM2 …eeware (MSDOS)(1992)(Eng) / ProfitPress-MegaCDROM2.B6I / PROG / MISC / VSNBL220.ZIP / SNOBOL4.DOC < prev next >

Wrap

Text File | 1991-11-01 | 32.4 KB | 822 lines

MORE INFORMATION ON SNOBOL4 Vanilla SNOBOL4 may be as far as your interest in SNOBOL4 goes. We've included a language tutorial manual on the disk so you can learn how to program in SNOBOL4. We've tried to make Vanilla SNOBOL4 a useful entity in its own right -- something you can use for file reformatting jobs and quick utilities. That's fine -- we hope you like it and find it useful. But someone once said that SNOBOL4 patterns were like potato chips; it's hard to stop with just one. If you find that's true, you'll want to know about other materials related to the SNOBOL4 language. This file, SNOBOL4.DOC, contains information on SNOBOL4 books in print -- from beginner to advanced. Because the richness of the SNOBOL4 language provides so many different ways to attack a problem, these books are especially useful -- every author seems to bring a different perspective to the language. We've also included descriptions of SNOBOL4+ and SPITBOL, our professional SNOBOL4 products. Their many extra features allow you to tackle large problems, and SPITBOL runs 6 to 10 times faster than SNOBOL4. All include printed manuals. There's also a section describing other products we manufacture or distribute that are useful for non-numeric applications. For the true SNOBOL4 addict, we've designed an outrageous, 6-color SNOBOL4 T-shirt to proclaim that you're an iconoclast who knows how to solve problems quickly, easily and efficiently. We've priced the shirts at a very reasonable $10.95 -- less than a box of disks and far more attractive. You might want to order two in case your spouse or best friend makes off with yours. Finally, if any of this whets your appetite, there's an order form with current prices and ordering information. Welcome to SNOBOL4! CATSPAW, INC. P.O. BOX 1123 SALIDA, COLORADO 81201 USA SNOBOL4.DOC (V1.7) - 1 - November 1, 1991 SNOBOL4 BOOKS... Algorithms in SNOBOL4 --------------------- James F. Gimpel. Originally published in 1976; republished in 1986 by Catspaw. ISBN 0-939793-00-8, paper. ISBN 0-939793-01-6, hardcover. 500 pages. A diskette with all the book's functions and programs is available separately. This is the famous "Orange Book" which provides powerful ways to process text and strings with SNOBOL4. It explains how to process lists, convert files, format text, generate poetry, pro- totype a compiler, and play poker -- and that's just a start. No matter what you do with SNOBOL4, you'll find functions and tech- niques here that will not only save you time, but amaze you with their ingenuity. Gimpel writes functions so that they can be plugged into your programs, which makes the diskette a valuable, and immediately useful, addition to your programming library. Chapters are: Preliminaries; Conversions; Basic String Func- tions; Basic List Processing; Pattern Theory; Pattern Matching Implementation; Pattern Construction; Input/Output; Paragraph Formatting; Implementation and Timing; Permutations; Sorting; Function Functions; Numbers; Stochastic Strings; Games; Assem- blers, Compilers and Macros; Solution to Odd-Numbered Exercises; Appendix; Index. SNOBOL Programming for the Humanities ------------------------------------- Susan Hockey. Clarendon Press, Oxford, 1985. ISBN 0-19- 824676-5, paperback. 178 pages. When asked what is the best introductory text for people whose background is in the humanities, rather than the computer sci- ences, we recommend this one. Hockey begins with a simple expla- nation of SNOBOL4 syntax, and works through exercises with both text and data files, progressing to concordances, frequency counts, list processing, and data validation. There are answers in the back. Computers in Linguistics ------------------------ Christopher Butler. Basil Blackwell Ltd., Oxford, 1985. ISBN 0-631-14267, paperback. 270 pages. Although the title is general, most of the book is specifically devoted to SNOBOL4 and its use in literary and linguistic comput- ing -- specialized indices, for instance, or semantic analysis. SNOBOL4.DOC (V1.7) - 2 - November 1, 1991 Butler provides a clear SNOBOL4 tutorial, aimed at non-program- mers, so that the reader "should attain a level of competence which will allow him to write programs for his own purposes, so making him much less dependent on the availability of package programs or under-employed professional programmers." There are answers to the exercises, along with a comprehensive bibliography, in this fine introductory text. Note, though, that it presumes an environment of mainframes and terminals, rather than personal desktop machines. A SNOBOL4 Primer ---------------- Ralph and Madge Griswold. Prentice-Hall, 1973. ISBN 0-13- 815381-7, paperback. 192 pages. A beginner's introduction to SNOBOL4 for readers with no pro- gramming or technical background. As a programming guide for humanities researchers, it predates the books by Hockey and But- ler by more than a decade. Chapters cover an introduction to computers, the basics of SNOBOL4, data types, pattern matching, user-defined functions, arrays and tables, input/output, and programming techniques. An excellent chapter on debugging concludes the volume. There are numerous exercises (with solutions provided) and a comprehensive glossary. Use this volume to complete your SNOBOL4 collection, or to get ideas for teaching SNOBOL4 to beginners. The Programmer's Introduction to SNOBOL --------------------------------------- W. Douglas Maurer. Elsevier, 1976. ISBN 0-444-00172-7, paper- back. 141 pages. This book is for people who already program in other languages, but want to enjoy programming by taking up SNOBOL4. It's a slim book, but covers a lot of territory, with exercises and answers in the back. Chapters cover elementary SNOBOL features, pattern-matching, associative programming, pattern properties, advanced topics, and systems programming. You might know someone who's already competent with computers and proficient in one or more other languages. Your colleague is always in a foul humor because he has to keep track of memory al- location and variable types every time he writes a program. This book offers a good, and fast, way to get your colleague up and running with SNOBOL4, thus improving the workplace environment. SNOBOL4.DOC (V1.7) - 3 - November 1, 1991 The SNOBOL4 Programming Language, 2nd Edition --------------------------------------------- R.E. Griswold, J.F. Poage, and I.P. Polonsky. Prentice-Hall, 1971. ISBN 0-13-815373-6, paperback. 256 pages. This is the well-known "Green Book," and it is the standard reference work on SNOBOL4. Written by the creators of the lan- guage, this book provides its definition. The Green Book presumes that SNOBOL4 is running on a mainframe in fashion 15 years ago, and thus it is somewhat dated, with ref- erences to card punches and readers. If that's where most of your experience lies, though, you may be more comfortable with their approach, and their use of illus- trated bead diagrams to explain pattern-matching: think of the scanner as a needle, and the patterns as beads which may or may not be in line to be threaded. There are no practice exercises, but the authors present many algorithms, as well as six sample programs. SNOBOL4+ -- THE PROFESSIONAL SNOBOL4 PACKAGE SNOBOL4+ is Catspaw's professional version of the SNOBOL4 pro- gramming language. It offers many features not found in Vanilla SNOBOL4. The added features make your SNOBOL4 programs even more concise and easy to write. Here's a partial list: Additional Features ------------------- ASSEMBLY-LANGUAGE INTERFACE -- Create functions to extend func- tionality beyond the SNOBOL4 environment. You can write hardware specific functions, interfaces to other software, or perform op- erations that are awkward or inefficient in SNOBOL4. INCLUDED FILES -- Provides the inclusion of other source code files into a program being compiled. Include files may be nested, simplifying the use of source code libraries. LARGE MEMORY -- Provides 300K bytes for user program and data ENHANCED PATTERN MATCHING -- You can "back up" during a pattern match with a negative argument to the LEN function, while TAB and RTAB allow you to position to the left of the current cursor position. A MARB pattern provides a "maximum ARB" capability. SYMBOLIC DEBUGGER -- A SNOBOL4 program that may be included with the program to be debugged. It provides tracing, breakpoints, variable inspection and modification, and viewing of program source lines. SNOBOL4.DOC (V1.7) - 4 - November 1, 1991 Additional Functions -------------------- BACKSPACE() -- Backs up a file one record BREAKX() -- Provides a more flexible BREAK pattern ENVIRONMENT() -- Look up strings from MS-DOS environment block EXECUTE() -- Execute MS-DOS commands and other programs from within a SNOBOL4 program LEQ, LNE, LLE, LGE, LLT -- Extends the LGT lexical comparison function LOAD() -- Loads external, assembly-language functions PATHNAME() -- Retrieve file name from unit number REVERSE() -- Reverse a string REWIND() -- Rewinds a file to its beginning SUBSTR() -- Extract substring from string SAVE() -- Checkpoints state of system to a file for later restoration, or distribution with run-time module SEEK(), TELL(), TRUNCATE() -- Support for random-access files SETBREAK() -- Provides user control of Control-C key SORT(), RSORT() -- Built-in Shell sort for tables and arrays Enhanced I/O ------------ BINARY I/O -- Raw file I/O without interpretation of ASCII con- trol characters. Provides the greatest control of file contents. RANDOM-ACCESS -- Update existing files by opening them for both reading and writing, with old contents preserved UNIX(tm) I/O -- Read or write Unix formatted records Real Number Support ------------------- REALS -- 64-bit precision providing 15 decimal digit accuracy. New keywords to control the precision and format of real numbers. 80(2)87 SUPPORT -- Uses numeric co-processor if available, other- wise a built-in software emulator is substituted automatically. INFINITY and NAN -- Support for infinity and NAN (Not-A-Number) SNOBOL4.DOC (V1.7) - 5 - November 1, 1991 if produced by calculations. LN and EXP -- Built-in Logarithm and Exponential function. New Command Line Options ------------------------ INTEGER OVERFLOW -- Provides automatic conversion from integer to real if an arithmetic operation produces integer overflow. MEMORY SIZE -- Adjust SNOBOL4+'s memory usage NO-FAIL MODE -- Diagnosis undetected statement failure SAVE FILE -- Write SAVE file after compilation. This binary ob- ject file may be distributed with Catspaw's runtime module. STACK SIZE -- Adjust SNOBOL4+'s stack usage Additional Operators -------------------- LIST SELECTION -- Provides a list of expressions that are evalu- ated sequentially until one succeeds; it then becomes the value of the list. This provides an If-Then-Else control structure in convenient expression form. For example: OUT = "N is " (GT(N,0) "POSITIVE", EQ(N,0) "ZERO", "NEGATIVE") MULTIPLE ASSIGNS -- Permits multiple assignments within a state- ment, as in: RESULT = A[I = I + 1] = A[I] * 5 PATTERN MATCH -- The binary question mark operator designates pattern matching. It permits pattern matches to be used within an expression, for example: X = (SUB1 ? PAT1) (SUB2 ? PAT2) + 1 Program Library --------------- SNOBOL4+ is accompanied by over 70 files of sample programs and functions provide examples in the areas of text processing, pars- ing, artificial intelligence (including ELIZA), symbolic mathe- matics, cryptography, and data structures. Reading these fascinating programs will open your eyes to the true expressive power of the language. Full Documentation ------------------ Our professional package includes a 240-page printed manual (with index) with tutorial and thorough reference manual. All features and functions of SNOBOL4+ are discussed, including the assembly language interface. SNOBOL4.DOC (V1.7) - 6 - November 1, 1991 SPITBOL -- THE HIGH PERFORMANCE SNOBOL4 With minor exceptions, SPITBOL (SPeedy ImplemenTation of snoBOL) is upward compatible with SNOBOL4. The limitations are minor: standard system functions and operators may not be rede- fined with OPSYN, and Quickscan heuristics have been eliminated. Internally, these limitations are turned to advantage, because when combined with very clever system coding, the result is exe- cution times that must be experienced to be believed. When run on the same 80386 platform, SPITBOL is typically 6 to 10 *times* faster than SNOBOL4+. Under license from Prof. Robert B.K. Dewar, SPITBOL's creator, and in cooperation with Robert Goldberg (Vax and PDP-11 SPITBOL), Catspaw has produced versions of Macro SPITBOL for many different hardware platforms. SPITBOL-68K for the Motorola 680x0 Family ----------------------------------------- SPITBOL-68K is available for 680x0 machines running the Unix operating system, including the Sun 2 and Sun 3, Apollo Domain, NCR Tower 32, Convergent S series, AT&T 7300/3B1 (Unix PC), HP 350, WICAT, and UNISYS 5000. SPITBOL-68K is compatible with virtual memory. We've scanned strings of 1,500,000 characters on a machine with only 1 megabyte of RAM (albeit somewhat slowly because of disk swapping). MaxSPITBOL for the Apple Macintosh ---------------------------------- MaxSPITBOL integrates SPITBOL with the Macintosh windowed editor environment. It runs on the Mac Plus, SE, and Mac II, or earlier systems that have been upgraded from the old 64K ROMS. 400K of available RAM memory is required, but MaxSPITBOL will use all you provide. It is MultiFinder friendly, and happily backgrounds while you perform other work. Includes tutorial, reference manual, and many sample programs. Requires System level 6.01 or higher. MaxSPITBOL is 32-bit clean and System 7 compatible. SPITBOL-386 for MS-DOS ---------------------- This is a native-mode, 32-bit SPITBOL for 80386 systems under MS-DOS incorporating a DOS extender. Use all the memory on your 386 system for SPITBOL programs and data. Have 32 megabytes of RAM? Now you can use it all. Includes tutorial, reference manual, and sample programs. Two versions are included: One uses a DOS Extender from PharLap Software suitable for native DOS, extended or expanded memory and VCPI-compliant hosts such as DESQview 386. The second SNOBOL4.DOC (V1.7) - 7 - November 1, 1991 version uses a DOS Extender from Intel Corp., and works in native DOS, extended memory, and with DPMI hosts such as Windows 386 Enhanced mode. The Intel-extended version of SPITBOL is capable of producing stand-alone, royalty-free executable files, and can even run programs larger than memory, because a virtual memory manager is included. SPITBOL-386 for OS/2 2.0 ------------------------ This is a native-mode, 32-bit SPITBOL for 80386 systems under IBM's OS/2 version 2.0. It generates stand-alone, royalty-free executables, and can load DLLs (Dynamic Link Libraries) as external SNOBOL4 functions. SPARC SPITBOL ------------- Our first port to a RISC architecture, SPITBOL for the SparcStation and Sun 4's really screams. Our benchmarks show SPITBOL on a SparcStation 1 to be more than twice as fast as SPITBOL on a 25 Mhz 80386. Like our other Unix products, SparcSPITBOL produces stand-alone, royalty-free load modules (a.out files). SNOBOL4.DOC (V1.7) - 8 - November 1, 1991 SNOBOL4-RELATED ITEMS The Rebus Programming Language ------------------------------ Rebus is a language that provides modern control structures for SNOBOL4 and SPITBOL. It combines features of Icon and SNOBOL4, giving you some of the control structures and syntax of Icon with the pattern-matching power of SNOBOL4. Rebus is actually a preprocessor that accepts Rebus code and outputs SNOBOL4 code, which in turn runs under SNOBOL4+ or SPITBOL. With some restrictions, it will even run with Vanilla SNOBOL4. Catspaw offers an MS-DOS diskette that contains the Rebus preprocessor and documentation. It is still in its experimental stages, so this is not a polished product. Since Rebus produces SNOBOL4 code, you must have one of the SNOBOL4 or SPITBOL systems to use Rebus. By way of example, here's the standard word frequency program in Rebus: function main() letter := &lcase || &ucase wpat := break(letter) & span(letter) . word count := table() while text := input do while text ?- wpat do count[word] +:= 1 if result := sort(count) then { output := "Word counts" I := 0 Repeat output := result[i +:= 1,1] || " - " || result[i,2] } else output := "There are no words." end Btrieve(tm) Database System Interface ------------------------------------- The standard for file management on MS-DOS machines is Btrieve from Novell. Btrieve has been integrated with several other programming languages, and Catspaw offers an interface to SNOBOL4+. Our package allows you to call Btrieve functions from inside a SNOBOL4+ program. Btrieve specializes in finding and updating database records (fixed and variable length) in a hurry with its tree file structure and indexing system. You can use Btrieve to fetch the data you want, and SNOBOL4+ to work with it. Note that the interface does not include Btrieve, which must be purchased separately. SNOBOL4.DOC (V1.7) - 9 - November 1, 1991 Artificial Intelligence in SNOBOL4 ---------------------------------- SNOBOL4's backtrack searching, recursive abilities, and first- class data objects make it suitable for AI applications. In fact, it is easy to implement LISP in SNOBOL4. We've taken a superb, but difficult to obtain report -- Michael Shafto's "Artificial Intelligence Programming in SNOBOL4" -- and placed it on diskette. We've also included all of Shafto's demonstration programs and his SNOLISPIST function library . These list processing functions, written in SNOBOL4, simplify the task of converting LISP programs into SNOBOL4. THE ICON PROGRAMMING LANGUAGE ProIcon for the Apple Macintosh ------------------------------- Icon is a high-level programming language with extensive facil- ities for processing strings and lists. Icon has several novel features, including expressions that may produce sequences of results, goal-directed evaluation that automatically searches for a successful result, and string scanning that allows operations on strings to be formulated at a high conceptual level. Icon emphasizes a design philosophy that allows ease of pro- gramming and short, concise programs. Storage allocation and garbage collection are automatic, and there are few restrictions on the sizes of objects. Strings, lists, sets, and other struc- tures are created during program execution and their size does not need to be known when a program is written. Values are con- verted to expected types automatically; for example, numeral strings read in as input can be used in numerical computations without explicit conversion. Examples of the kinds of problems for which Icon is well suited are: text analysis, editing, and formatting, document prepara- tion, symbolic mathematics, text generation, parsing and transla- tion, data laundry, graph manipulation, expert systems, artifi- cial intelligence applications, and rapid prototyping. ProIcon, an enhanced implementation of Icon for the Apple Macintosh, was developed jointly by Catspaw, Inc. and the Bright Forest Company. SNOBOL4.DOC (V1.7) - 10 - November 1, 1991 ORDERING INFORMATION Legend: # Diskette(s) only. Documentation is present on the disk. * Shipping charges apply. See instructions below. ***** SOFTWARE ***** [ ] SNOBOL4+ for MS-DOS, with 240-page tutorial and reference manual, 70 files of programs * $125.00 ______ 68K-Spitbol for Unix operating system (specify): [ ] For single-user workstations * $1,000.00 ______ [ ] For central-file servers * $2,000.00 ______ [ ] SPITBOL-386 (MS-DOS) includes DOS-Extender * $295.00 ______ [ ] SPITBOL-386 (OS/2 2.0) * $295.00 ______ [ ] MaxSPITBOL (Apple Macintosh) * $195.00 ______ Sparc, Sun 4 SPITBOL (specify): [ ] For SparcStation 1 * $695.00 ______ [ ] For single-user Sun 4 workstations * $1,000.00 ______ [ ] For central-file Sun 4 servers * $2,000.00 ______ [ ] ProIcon (Apple Macintosh) * $175.00 ______ [ ] Rebus language diskette, MS-DOS only # $15.00 ______ [ ] Btrieve/SNOBOL4+ interface * $50.00 ______ [ ] SNOBOL4 T-shirts, outrageous 6-color, 100% cotton, S(34-36), M(38-40), L(42-44), XL(46-48) * $10.95 ______ Program diskette for "Algorithms in SNOBOL4." See listing under "Books." ***** BOOKS ***** "Algorithms in SNOBOL4," Gimpel, 500 pages. [ ] Paper * $29.95 ______ [ ] Hardcover * $39.95 ______ [ ] Program diskette # $15.00 ______ [ ] "Computers in Linguistics," Butler, paper, 270 pages *. $21.95 ______ [ ] "SNOBOL Programming for the Humanities," Hockey, paper, 178 pages *. $24.95 ______ [ ] "SNOBOL4 Programming Language," Griswold, Poage, Polonsky, paper, 256 pages *. $33.40 ______ [ ] "The Programmer's Introduction to SNOBOL," Maurer, paper, 141 pages *. $31.75 ______ SNOBOL4.DOC (V1.7) - 11 - November 1, 1991 [ ] "A SNOBOL Primer," Griswold & Griswold, paper, 192 pages *. $33.00 ------ [ ] "Artificial Intelligence Programming in SNOBOL4," Shafto, 162 pages + programs, on diskette. # $15.00 ______ [ ] "The Macro Implementation of SNOBOL4," Griswold, cloth, 324 pages, limited number of copies, some have scuff marks on the cover *. $50.00 ______ [ ] "The ICON Programming Language," Griswold & Griswold, 2nd ed., paper, 368 pages *. $35.80 ______ [ ] "The Implementation of the ICON Programming Language," Griswold & Griswold, hardcover, 336 pages *. $50.00 ______ SHIPPING and HANDLING Shipping charges are based upon the number of books and book- like items (shown with *) purchased, subject to an overall mini- mum charge, to take care of diskette-only purchases. Foreign shipments are sent by insured Air Parcel Post, registered Air Small Packet, or registered First Class Airmail. | First Item Each additional Minimum Destination | with * * item shipping charge ------------------+---------------------------------------------- Continental US | | (UPS ground) | $4.00 $1.00 $1.50 | (UPS 2nd Day Air) | $7.50 $3.50 $5.00 | ------------------+---------------------------------------------| Alaska, Hawaii, | | Puerto Rico | $6.00 $2.00 $1.50 | (1st class mail) | | ------------------+---------------------------------------------| Canada, Mexico | $10.00 $2.00 $2.00 | ------------------+---------------------------------------------| France, Japan | $40.00 $7.00 $5.00 | ------------------+---------------------------------------------| Australia, N.Z., | $35.00 $5.00 $5.00 | South America,Far | | East (exc. Japan) | | ----------------------------------------------------------------- UK, Europe (exc. | | France), all | $30.00 $5.00 $5.00 | other countries | | ------------------+---------------------------------------------| PRICES Publishers regularly raise the price of the books we stock, typically 5-10% every 6 months. We try to hold the line on items we produce. So the usual caveat applies: Prices subject to change without notice. Prices on this price list are guaranteed through December 31, 1991 only. If ordering after this date, please contact Catspaw for current price information. SNOBOL4.DOC (V1.7) - 12 - November 1, 1991 PAYMENT Payment may be by check, money order, MasterCharge, Visa or American Express credit cards. Checks and money orders MUST be in U.S. funds drawn on a U.S. bank; neither we nor any nearby financial institutions are equipped to process international currency transactions (checks MUST have US Federal Reserve coding numbers--in the past it has cost us $25-$40 to cash a check lacking these numbers, and we no longer can do that). Non-U.S. customers will find credit cards or international postal money orders to be the simplest method of transferring funds. TO ORDER To order direct, or for additional information, call 719-539-3884 (9 a.m. - 5 pm, Mountain Time, GMT - 7 hours, Monday - Friday), or FAX 719-539-4830. Or complete this form and mail to: Catspaw, Inc. P.O. Box 1123 Salida, Colorado 81201 U.S.A. Subtotal for desired items: _________ Colorado residents add 3% state tax: _________ Shipping: _________ (Domestic U.S. specify UPS ground or 2 day air) Total Amount Enclosed: _________ Name _______________________________________Title _______________ Address _________________________________________________________ _________________________________________________________ City _______________________________________State _______________ Zip _____________Phone( )_________________(Country)____________ Specify media: [ ] 5-1/4" MS-DOS [ ] 3-1/2" MS-DOS [ ] 3-1/2" Macintosh [ ] 3-1/2" Sparc [ ] cartridge tape Payment: [ ] Check or Money Order [ ] American Express [ ] MasterCard (Eurocard) [ ] Visa __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ Account Number |__|__|__|__|__|__|__|__|__|__|__|__|__|__|__|__| Signature _______________________________Exp. Date____________ SNOBOL4.DOC (V1.7) - 13 - November 1, 1991