423 lines
9.9 KiB
C
423 lines
9.9 KiB
C
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/*** mep.c - top level for editor
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*
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* Copyright <C> 1988, Microsoft Corporation
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*
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* Revision History:
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* 26-Nov-1991 mz Strip off near/far
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*************************************************************************/
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#define INCL_DOS
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#include "mep.h"
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#include "version.h"
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#define DEBFLAG Z
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/*
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* use double macro level to force rup to be turned into string representation
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*/
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#define VER(x,y,z) VER2(x,y,z)
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#define VER2(x,y,z) "Version "###x##"."###y"."###z" "szVerName
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char Name[] = "Microsoft (R) Editor";
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char Version[] = VER(rmj,rmm,rup);
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char CopyRight[] = "Copyright (C) Microsoft Corp 1987-1990. All rights reserved";
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/*** main - program entry
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*
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* Input:
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* C standard command line parameters. Recognizes:
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*
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* /e string - Execute string of commands on startup
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* /t - Following file is "temporary", not kept in file history
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* /D - Don't read tools.ini
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* /r - Global no-edit mode (can't edit files)
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* /m markname - Start up at given mark
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* /pwb - Start as PWB
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*
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* When the editor is built with DEBUG defined, the following are also
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* recognized:
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*
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* /d debflags - Specifies which debugging to turn on
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* /f filename - Specifies file for debug output
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*
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* The following are present in the CW version of the editor only. They are
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* for testing only and should NOT be documented:
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*
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* /vt tapename- Set tape name
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* /vr - Record messages to file "default.key"
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* /vp - Play back messages from file "default.key"
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* /vd digit - Set playback delay from 0 to 9
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*
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*
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* Output:
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* Returns nothing. Exits via CleanExit()
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*
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* Exceptions:
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* Various and sundry, based on program operation
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*
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*************************************************************************/
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void __cdecl
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main (
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int c,
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char **v
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) {
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char *pExecute = NULL; /* string to execute on start */
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char *szMark = NULL; /* mark to go to on start */
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char *szName = v[0]; /* ptr to invokation name */
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flagType InLoop = TRUE;
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ConvertAppToOem( c, v );
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SHIFT(c,v);
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#if DEBUG
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debug = 0;
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//debfh = stdout;
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#endif
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while (c && fSwitChr (**v) && InLoop) {
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switch ((*v)[1]) {
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#if DEBUG
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case 'f':
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case 'F':
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SHIFT(c,v);
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if ((debfh = MepFOpen(*v, ACCESSMODE_WRITE, SHAREMODE_RW, TRUE)) == NULL) {
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printf("Can't open %s for debug output - using stdout\n", *v);
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//debfh = stdout;
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}
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// setbuf(debfh, NULL);
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break;
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#endif
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case 'e':
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case 'E':
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//
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// /e command to execute
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//
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if ( c > 1 ) {
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SHIFT (c, v);
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pExecute = *v;
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}
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break;
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case 't':
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case 'T':
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//
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// /t next file is temporary .. don't keep in file history
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//
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InLoop = FALSE;
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break;
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#if DEBUG
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case 'd':
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//
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// /d### debug level
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//
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SHIFT(c,v);
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debug = ntoi (*v, 16);
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break;
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#else
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case 'd':
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#endif
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case 'D':
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//
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// /D don't read tools.ini
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//
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fDefaults = TRUE;
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break;
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case 'r':
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case 'R':
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//
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// /r Enter with noedit
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//
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fGlobalRO = TRUE;
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break;
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case 'm':
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case 'M':
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//
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// /m markname - start at markname
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//
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SHIFT(c,v);
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szMark = *v;
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default:
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printf ("%s %s\n", Name, Version);
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printf ("%s\n", CopyRight);
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printf("Usage: %s [/D] [/e cmd-string] [/m mark] [/r] [[/t] filename]*\n", szName);
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fSaveScreen = FALSE;
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exit(1);
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break;
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}
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if (InLoop) {
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SHIFT(c,v);
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}
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}
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InitNames (szName);
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cArgs = c;
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pArgs = v;
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// assert (_heapchk() == _HEAPOK);
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/*
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* At this point, command line arguments have been processed. Continue with
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* initialization.
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*/
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if (!init ()) {
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CleanExit (1, CE_VM);
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}
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/*
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* based on the re-entry state, take appropriate initial action:
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* - PWB_ENTRY: process rest of command line
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* - PWB_COMPILE: read compile log, and go to first error in log
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* - PWB_SHELL: do nothing
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*/
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#if 0
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//
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// BUGBUG what is this supposed to do?
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//
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if (szMark) {
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GoToMark;
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}
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#endif
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domessage (CopyRight);
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Display ();
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/*
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* execute autostart macro if present
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*/
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if (NameToFunc ("autostart")) {
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fExecute ("autostart");
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Display ();
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}
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/*
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* execute command line /e parameter if present
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*/
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if (pExecute) {
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fExecute (pExecute);
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}
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TopLoop ();
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CleanExit (0, CE_VM | CE_SIGNALS | CE_STATE);
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}
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/*** TopLoop - read a command and execute it until termination
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*
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* We read commands from the editor input and send them to the proper
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* recipients. We continue to do this until a termination flag is seen.
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*
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* Input:
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* None
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*
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* Output:
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* Returns nothing
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*
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*************************************************************************/
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void
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TopLoop (
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void
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) {
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PCMD pFuncPrev = &cmdUnassigned;
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while (!fBreak) {
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PCMD pFunc = zloop (ZL_CMD | ZL_BRK);
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if (pFunc != NULL) {
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/* if prev wasn't graphic or this wasn't graphic then
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* log a boundary
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*/
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if (pFuncPrev->func != graphic || pFunc->func != graphic) {
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LogBoundary ();
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}
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fRetVal = SendCmd (pFunc);
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if (pFunc->func != cancel) {
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if (fCtrlc) {
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DoCancel ();
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}
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}
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pFuncPrev = pFunc;
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}
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}
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fBreak = FALSE;
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}
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/*** zloop - read next command, potentially updating screen
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*
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* zloop updates screen until a command is read that is not a macro
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* invocation. If a macro invocation is seen then just execute it and
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* continue. The reason for this is that the macro invocation will set up a
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* new input context that we'll retrieve in the next loop.
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*
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* We call RecordCmd for each command, in case we have recording on. If
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* the user has done <meta><record>, we record macro names, not their
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* values. This is because a macro with flow control, especially a loop,
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* will behave badly (possibly hang) because none of the editing commands
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* return values.
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*
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* Input:
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* flags - ZL_CMD command key, should be an event
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* - ZL_BRK take fBreak into account
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*
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* Output:
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* Returns a pointer to command structure that is next to be executed
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*
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*************************************************************************/
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PCMD
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zloop (
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flagType flags
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) {
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REGISTER PCMD pFunc;
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EVTargs e;
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while (!fBreak || !TESTFLAG(flags, ZL_BRK)) {
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/*
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* Between every command, check heap and pfile list consistancy
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*/
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// assert (_heapchk() == _HEAPOK);
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// assert (_pfilechk());
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/* if macro in progress then
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*/
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if (mtest ()) {
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pFunc = mGetCmd ();
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} else {
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DoDisplay ();
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do {
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pFunc = ReadCmd ();
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e.arg.key = keyCmd.KeyInfo;
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if (!TESTFLAG(flags, ZL_CMD)) {
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break;
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}
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} while (DeclareEvent (EVT_KEY, (EVTargs *)&e));
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}
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if (pFunc != NULL) {
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RecordCmd (pFunc);
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if (pFunc->func == macro) {
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fRetVal = SendCmd (pFunc);
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} else {
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break;
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}
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}
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}
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return pFunc;
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}
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/*** Idle & IdleThread - Code executed at idle time
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*
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* Idle loop. Structured so that only ONE idle-item does something each time
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* though the loop. Ensures minimum exit delay. When nothing has
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* happened we sleep a bit each time, to make sure we're not hogging the CPU.
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*
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* Also causes the screen to be updated, if need be.
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*
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* Idle is structure so that routines which it calls return either:
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* TRUE - idle processing done, perhaps more to be done
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* FALSE - no idle processing done, and no more anticipated.
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*
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* Input:
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* none
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*
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* Output:
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* Returns nothing
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*
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*************************************************************************/
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void
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IdleThread (
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void
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) {
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while (TRUE) {
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WaitForSingleObject( semIdle, INFINITE);
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Idle();
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SetEvent( semIdle );
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Sleep(100L);
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}
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}
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flagType
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Idle (
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void
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) {
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if (TESTFLAG (fDisplay, (RTEXT | RCURSOR | RSTATUS))) {
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DoDisplay ();
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}
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if (!DeclareEvent (EVT_IDLE, NULL)) {
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if (!fIdleUndo (FALSE)) {
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return FALSE;
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}
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}
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/*
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* got here, means someone processed idle, and may have more to do
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*/
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return TRUE;
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}
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/*** IntError - Internal error Processor.
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*
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* Allow user to abort, or attempt to continue.
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*
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* Input:
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* p = pointer to error string
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*
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* Output:
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* Returns only if user says to.
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*
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*************************************************************************/
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void
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IntError (
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char *p
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) {
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static char pszMsg [] = "MEP internal error - %s, continue? ";
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if ( OriginalScreen ) {
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consoleSetCurrentScreen( OriginalScreen );
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}
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printf ("\n");
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if (TESTFLAG (fInit, INIT_VIDEO)) {
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if (!confirm (pszMsg, p)) {
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#if DEBUG
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fflush (debfh);
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#endif
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CleanExit (1, CE_STATE);
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} else {
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;
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}
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} else {
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printf (pszMsg, p);
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CleanExit (1, FALSE);
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}
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}
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