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DEC Text Processing Utility Program Development
5.6 Using DECTPU Startup Files
Example 5–5 Source Code for Minimal Interface to DECTPU
! MINI.TPU - minimal DECTPU interface
PROCEDURE tpu$init_procedure
! Create a buffer and window for messages
message_buffer := CREATE_BUFFER ("Message Buffer");
SET (NO_WRITE, message_buffer);
SET (SYSTEM, message_buffer);
SET (EOB_TEXT, message_buffer, "");
message_window := CREATE_WINDOW (21, 4, OFF);
MAP (message_window, message_buffer);
! Create a buffer and window for SHOW
show_buffer := CREATE_BUFFER("Show Buffer");
SET (NO_WRITE, show_buffer);
SET (SYSTEM, show_buffer);
info_window := CREATE_WINDOW (1, 20, ON);
! Create a buffer and window for editing
main_buffer := CREATE_BUFFER ("Main Buffer");
main_window := CREATE_WINDOW (1, 20, ON);
MAP (main_window, main_buffer);
! Create an area on the screen for prompts
SET (PROMPT_AREA, 21, 1, NONE);
!Put the editing point in the main buffer
POSITION (main_buffer);
tpu$local_init;
ENDPROCEDURE;
PROCEDURE tpu$local_init !Procedure to allow end users
!to add private extensions
ENDPROCEDURE;
! Define the minimal editing keys:
DEFINE_KEY ("SPLIT_LINE", RET_KEY);
DEFINE_KEY ("ERASE_CHARACTER(-1)", DEL_KEY);
DEFINE_KEY ("EXECUTE(READ_LINE(’DECTPU Statement: ’))", TAB_KEY);
DEFINE_KEY ("EXIT", Ctrl_Z_KEY);
! Create a section file and then quit
IF (get_info/system,("operating_system")=ULTRIX)
THEN
save(’/usr/user/jacki/mini.tpu_section’);
ELSE
save(’sys$login.mini);
ENDIF
QUIT;
! End of MINI.TPU
If you created the section file SYS$LOGIN:MINI.TPU$SECTION, you could use
the procedures and definitions in that file as an interface to DECTPU. To invoke
DECTPU with SYS$LOGIN:MINI.TPU$SECTION as the MINI section file, use
the following command:
$ EDIT/TPU/SECTION=SYS$LOGIN:MINI your_text.fil
You can define the logical name TPU$SECTION to point to your section file. By
default, DECTPU looks for a file that TPU$SECTION points to and reads that
file as the default section file.
5–22 DEC Text Processing Utility Program Development
- Guide to the DEC Text 1
- ProcessingUtility 1
- Contents 3
- A Sample DECTPU Procedures 7
- B DECTPU Terminal Support 7
- C DECTPU Debugger Commands 7
- Examples 7
- Intended Audience 9
- Document Structure 9
- Related Documents 9
- Reader’s Comments 9
- Conventions 10
- Monospace text 11
- 1.1 Description of DECTPU 13
- 1.1.3 DECTPU Environments 14
- 1.3 Description of EVE 16
- 1.4 DECTPU Language 17
- 1.4.5 User-Written Procedures 19
- 1.6 Learning Path for DECTPU 20
- Getting Started with DECTPU 21
- 2.1.2 Startup Files 22
- 2.4 Using Journal Files 26
- 2.4.1 Keystroke Journaling 27
- 2.6.1 /CHARACTER_SET 29
- 2.6.2 /COMMAND 30
- 2.6.3 /CREATE 31
- 2.6.4 /DEBUG 32
- 2.6.5 /DISPLAY 32
- 2.6.6 /INITIALIZATION 33
- 2.6.7 /INTERFACE 34
- 2.6.8 /JOURNAL 34
- 2.6.9 /MODIFY 35
- 2.6.10 /OUTPUT 36
- 2.6.11 /READ_ONLY 37
- 2.6.12 /RECOVER 38
- 2.6.13 /SECTION 39
- 2.6.14 /START_POSITION 40
- 3.1 Array Data Type 42
- 3.2 Buffer Data Type 43
- 3.3 Integer Data Type 44
- 3.4 Keyword Data Type 45
- 3.5 Learn Data Type 47
- 3.6 Marker Data Type 48
- 3.7 Pattern Data Type 50
- 3.7.3 Using Pattern Operators 53
- 3.7.5 Searching for a Pattern 56
- 3.7.6 Anchoring a Pattern 57
- 3.8 Process Data Type 58
- 3.9 Program Data Type 58
- 3.10 Range Data Type 59
- 3.11 String Data Type 60
- 3.12 Unspecified Data Type 61
- 3.13 Widget Data Type 62
- 3.14 Window Data Type 62
- 3.14.2 Creating Windows 63
- 3.14.4 Mapping Windows 64
- 3.14.5 Removing Windows 65
- Utility Language 67
- 4.3 Character Sets 68
- 4.3.3 General Character Sets 69
- 4.3.5 DECTPU Symbols 70
- 4.4 Identifiers 71
- 4.5 Variables 71
- 4.6 Constants 72
- 4.7 Operators 73
- 4.8 Expressions 74
- 4.8.1 Arithmetic Expressions 76
- 4.8.2 Relational Expressions 76
- 4.8.3 Pattern Expressions 77
- 4.8.4 Boolean Expressions 77
- 4.9 Reserved Words 78
- 4.10 Lexical Keywords 100
- Development 101
- 5.1 Creating DECTPU Programs 102
- 5.1.1 Simple Programs 102
- 5.1.2 Complex Programs 102
- 5.1.3 Program Syntax 103
- 5.2.1 Widget Support 104
- 5.2.2 Input Focus Support 105
- "AUXILIARY" 106
- 5.2.4 Using Callbacks 107
- 5.2.5 Using Closures 110
- 5.4 Compiling DECTPU Programs 114
- 5.5 Executing DECTPU Programs 115
- 5.5.1 Procedure Execution 116
- 5.5.2 Process Suspension 116
- 5.6.1 Section Files 117
- 5.6.2 Command Files 117
- 5.6.3 Initialization Files 118
- 5.6.5 Using Section Files 119
- 5.6.6 Using Command Files 124
- 5.7 Debugging DECTPU Programs 128
- 5.8 Handling Errors 130
- Sample DECTPU Procedures 131
- A.1 Line-Mode Editor 132
- DECTPU Terminal Support 139
- B.3 Using Terminal Wrap 141
- DECTPU Debugger Commands 143
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