158 lines
3.5 KiB
C
158 lines
3.5 KiB
C
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/*** zspawn.c - shell command and support
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*
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* Copyright <C> 1988, Microsoft Corporation
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*
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* Contains the shell command, and associated support code.
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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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*************************************************************************/
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#include "mep.h"
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#include "keyboard.h"
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/*** zspawn - <shell> editor function
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*
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* <shell> runs command
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* <meta><shell> runs command with no save of current file
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* <arg><shell> uses text from line on screen as program to execute
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* <arg>text<shell> does command /C text
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*
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* Input:
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* Standard Editting Function
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*
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* Output:
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* Returns TRUE on successfull spawn.
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*
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*************************************************************************/
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flagType
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zspawn (
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CMDDATA argData,
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ARG * pArg,
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flagType fMeta
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)
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{
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buffer sbuf;
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flagType f = FALSE;
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LINE i;
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DeclareEvent (EVT_SHELL, NULL);
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if (!fMeta) {
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AutoSave ();
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}
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soutb (0, YSIZE+1, "***** PUSHED *****", fgColor);
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domessage (NULL);
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consoleMoveTo( YSIZE, 0 );
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switch (pArg->argType) {
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case NOARG:
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f = zspawnp (rgchEmpty, TRUE);
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break;
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case TEXTARG:
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strcpy ((char *) sbuf, pArg->arg.textarg.pText);
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f = zspawnp (sbuf, TRUE);
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break;
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/* NULLARG converted to TEXTARG*/
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case LINEARG:
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for (i = pArg->arg.linearg.yStart; i <= pArg->arg.linearg.yEnd; i++) {
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GetLine (i, sbuf, pFileHead);
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if (!(f = zspawnp (sbuf, (flagType)(i == pArg->arg.linearg.yEnd)))) {
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docursor (0, i);
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break;
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}
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}
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break;
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/* STREAMARG illegal */
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case BOXARG:
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for (i = pArg->arg.boxarg.yTop; i <= pArg->arg.boxarg.yBottom; i++) {
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fInsSpace (pArg->arg.boxarg.xRight, i, 0, pFileHead, sbuf);
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sbuf[pArg->arg.boxarg.xRight+1] = 0;
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if (!(f = zspawnp (&sbuf[pArg->arg.boxarg.xLeft],
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(flagType)(i == pArg->arg.boxarg.yBottom)))) {
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docursor (pArg->arg.boxarg.xLeft, i);
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break;
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}
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}
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break;
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}
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fSyncFile (pFileHead, TRUE);
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return f;
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argData;
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}
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/*** zspawnp - shell out a program
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*
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* Execute the specified program, syncronously. Under DOS, if PWB and
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* minimize memory usage is on, we use the shell to execute the command,
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* else we just use system().
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*
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* Input:
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* p = pointer to command string
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* fAsk = TRUE => ask to hit any key before returning
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*
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* Globals:
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* fIsPwb = TRUE => we are executing as PWB
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* memuse = memory usage options
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*
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* Output:
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* Returns TRUE on success
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*
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*************************************************************************/
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flagType
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zspawnp (
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REGISTER char const *p,
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flagType fAsk
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)
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{
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intptr_t i;
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flagType fCmd = FALSE; /* TRUE => null shell */
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KBDMODE KbdMode;
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/*
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* support suppression of the prompt by explicit character in front of
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* command, then skip any leading whitespace
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*/
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if (*p == '!') {
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fAsk = FALSE;
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p++;
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}
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p = whiteskip (p);
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/*
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* if no command to execute, use command processor
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*/
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if (!*p) {
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fCmd = TRUE;
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fAsk = FALSE;
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p = pComSpec;
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}
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KbdMode = KbGetMode();
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prespawn (CE_VM);
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i = fCmd ? _spawnlp (P_WAIT, (char *)p, (char *)p, NULL) : system (p);
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postspawn ((flagType)(!mtest () && fAskRtn && (i != -1) && fAsk));
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// Hook the keyboard
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KbHook();
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KbSetMode(KbdMode);
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if (i == -1) {
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printerror ("Spawn failed on %s - %s", p, error ());
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}
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return (flagType)(i != -1);
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}
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