# Simple Gopher Client for TOPS-20
# tfurrows@sdf.org, 2019, public domain

## Summary

GOPHER> is a simple gopher client for TOPS-20. It uses
a "netcat" concept (as has been used in other gopher
clients) to retrieve the page. The current working page
is saved on the disk, and removed on exit. A history
file is used for backward navigation, and remains after
exit (unless you modify the script to remove it.) Paging
is handed at the OS level, if desired.

## Files

 - GOPHER.PCL		Main PCL program
 - GOPHER.CMD		Script to load program
 - TCPGET.C		Required

## Usage

Use "@take gopher.cmd" to define the routines, then use
"gopher" to start the program. Type "?" to see possible
commands, which include:

 - g)oto host port path		eg. g floodgap.com 70 /
 - f)ollow link #		eg. g 12 (a selector)
 - h)history			loads/shows the history
 - b)ack history #		eg. b 2 (a selector)
 - q)uit			quits and cleans up

To goto a host, you must always type the port and path.
While not immediately evident, you may encapsulate the path
in single quotes, to use things like tabs. If you want to 
search Veronica2, for example, you could use "g floodgap.com
70 '/v2/vs	test' (where a tab is required between the
path and search string.)

A session will look something like this:

GOPHER>g sdf.org 70 /
 TOPS20:<TFURROWS.PCL> [No pages freed]
Fetching  sdf.org 70 / ...
001: iWelcome to the SDF Public Access UNIX System .. est. 1987
002: i
003: iOfficial Site of the Internet Gopher Club Underground Syndicate
004: i
005: iWe offer FREE and inexpensive memberships for people interested
006: iin the UNIX system and internetworking.  Personal GOPHERSPACE
007: iis available to all users as well as hundreds of UNIX utilities,
008: igames and networking utilities.  We are a federally recognized
009: inon-profit 501(c)7 organization and we are supported entirely
010: iby donations and membership dues.  ssh://sdf.org
011: i
012: 1SDF PHLOGOSPHERE (279 phlogs)
013: 1SDF GOPHERSPACE (1197 ACTIVE users)
014: 1SDF GOPHERSPACE (1439 AGED users)
015: 1SDF GOPHERSPACE (475 ANCIENT users)
016: 1SDF Frequently Asked Questions (FAQ)
017: 1SDF Accredited University Courses
018: 1Software and Documentation for various computers
019: 7GopherSpace SEARCH Engine
020: 1Floodgap's GOPHERSPACE
021: i____________________________________________________________________________
022: i                     Gophered by Gophernicus/101 on NetBSD/amd64 8.0_STABLE
023: .
024: 
GOPHER>f 16
 TOPS20:<TFURROWS.PCL> [3 pages freed]
Fetching sdf.org 70 '/sdf/faq/' ...
001: 1BASICS  SDF History and UNIX Basics - START HERE
002: 1CHAT    Questions about IRC, ICQ and such.
003: 1DIALUP  SDF's TENEX National Dialup PPP Membership
004: 1EMAIL   Questions about INTERNETWORKED EMAIL.
005: 1GAMES   Single and Multiuser GAMES.
006: 1GOPHER  Gopherspace questions and answers.
007: 1MDNS    Dynamic DNS with mdns.org 
008: 1MEMBERS SDF Membership Information and Responsibilities
009: 1MISC    Miscellaneous, Odd and Very Interesting Questions  
010: 1MOTD    Coding, Journals, Forums and Galleries for UNIX Hackers
011: 1MYSQL   SDF's MySQL database server
012: 1TEACH   Using SDF to teach UNIX and NET concepts.
013: 1TECHIES Advanced UNIX Topics, UUCP and programming.
014: 1TWENEX  SDF's Project TENEX Free Software Community
015: 1UNIX    Questions about UNIX Shells.
016: 1USENET  Newsgroup Questions and News READERS
017: 1VHOST   Virtual Hosting and Domain Name Service.
018: 1WEB     Webserver questions and answers.
019: i____________________________________________________________________________
020: i                     Gophered by Gophernicus/101 on NetBSD/amd64 8.0_STABLE
021: .
022: 
GOPHER>