/* spawn.c -- implements spawn.h */ #include "spawn.h" /* spawn.c * * Various operating system access commands. * * Modified by Petri Kutvonen */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "defines.h" #include "buffer.h" #include "display.h" #include "estruct.h" #include "exec.h" #include "file.h" #include "flook.h" #include "input.h" #include "terminal.h" #include "window.h" #if USG | BSD #include <signal.h> #ifdef SIGWINCH #endif #endif /* * Create a subjob with a copy of the command intrepreter in it. When the * command interpreter exits, mark the screen as garbage so that you do a full * repaint. Bound to "^X C". */ int spawncli(int f, int n) { #if USG | BSD char *cp; #endif /* don't allow this command if restricted */ if (restflag) return resterr(); #if USG | BSD movecursor(term.t_nrow, 0); /* Seek to last line. */ TTflush(); TTclose(); /* stty to old settings */ TTkclose(); /* Close "keyboard" */ if ((cp = getenv("SHELL")) != NULL && *cp != '\0') ue_system( cp) ; else #if BSD system("exec /bin/csh"); #else ue_system( "exec /bin/sh") ; #endif sgarbf = TRUE; usleep( 2000000L) ; TTopen(); TTkopen(); #ifdef SIGWINCH /* * This fools the update routines to force a full * redraw with complete window size checking. * -lbt */ chg_width = term.t_ncol; chg_height = term.t_nrow + 1; term.t_nrow = term.t_ncol = 0; #endif return TRUE; #endif } #if BSD | SVR4 int bktoshell(int f, int n) { /* suspend MicroEMACS and wait to wake up */ vttidy(); /****************************** int pid; pid = getpid(); kill(pid,SIGTSTP); ******************************/ kill(0, SIGTSTP); return TRUE; } void rtfrmshell(void) { TTopen(); curwp->w_flag = WFHARD; sgarbf = TRUE; } #endif /* * Run a one-liner in a subjob. When the command returns, wait for a single * character to be typed, then mark the screen as garbage so a full repaint is * done. Bound to "C-X !". */ int spawn( int f, int n) { int s ; char *line ; /* don't allow this command if restricted */ if( restflag) return resterr(); #if USG | BSD s = newmlarg( &line, "!", 0) ; if( s != TRUE) return s ; TTflush(); TTclose(); /* stty to old modes */ TTkclose(); ue_system( line) ; free( line) ; fflush(stdout); /* to be sure P.K. */ TTopen(); if (clexec == FALSE) { mlwrite( "(End)") ; /* Pause. */ TTflush(); while ((s = tgetc()) != '\r' && s != ' '); mlwrite( "\r\n") ; } TTkopen(); sgarbf = TRUE; return TRUE; #endif } /* * Run an external program with arguments. When it returns, wait for a single * character to be typed, then mark the screen as garbage so a full repaint is * done. Bound to "C-X $". */ int execprg( int f, int n) { int s ; char *line ; /* don't allow this command if restricted */ if( restflag) return resterr() ; #if USG | BSD s = newmlarg( &line, "$", 0) ; if( s != TRUE) return s ; TTputc('\n'); /* Already have '\r' */ TTflush(); TTclose(); /* stty to old modes */ TTkclose(); ue_system( line) ; free( line) ; fflush(stdout); /* to be sure P.K. */ TTopen(); mlwrite( "(End)") ; /* Pause. */ TTflush(); while ((s = tgetc()) != '\r' && s != ' '); sgarbf = TRUE; return TRUE; #endif } /* * Pipe a one line command into a window * Bound to ^X @ */ int pipecmd( int f, int n) { int s ; /* return status from CLI */ struct window *wp ; /* pointer to new window */ struct buffer *bp ; /* pointer to buffer to zot */ char *mlarg ; char *line ; /* command line send to shell */ static char bname[] = "command" ; static char filnam[ NSTRING] = "command" ; /* don't allow this command if restricted */ if( restflag) return resterr() ; /* get the command to pipe in */ s = newmlarg( &mlarg, "@", 0) ; if( s != TRUE) return s ; line = malloc( strlen( mlarg) + strlen( filnam) + 2) ; if( line == NULL) { free( mlarg) ; return FALSE ; } strcpy( line, mlarg) ; free( mlarg) ; /* get rid of the command output buffer if it exists */ if ((bp = bfind(bname, FALSE, 0)) != FALSE) { /* try to make sure we are off screen */ wp = wheadp; while (wp != NULL) { if (wp->w_bufp == bp) { #if PKCODE if (wp == curwp) delwind(FALSE, 1); else onlywind(FALSE, 1); break; #else onlywind(FALSE, 1); break; #endif } wp = wp->w_wndp; } if( zotbuf( bp) != TRUE) { free( line) ; return FALSE ; } } #if USG | BSD TTflush(); TTclose(); /* stty to old modes */ TTkclose(); strcat( line, ">") ; strcat( line, filnam) ; ue_system( line) ; free( line) ; TTopen(); TTkopen(); TTflush(); sgarbf = TRUE; s = TRUE; #else if (s != TRUE) return s; #endif /* split the current window to make room for the command output */ if (splitwind(FALSE, 1) == FALSE) return FALSE; /* and read the stuff in */ if (getfile(filnam, FALSE) == FALSE) return FALSE; /* make this window in VIEW mode, update all mode lines */ curwp->w_bufp->b_mode |= MDVIEW; wp = wheadp; while (wp != NULL) { wp->w_flag |= WFMODE; wp = wp->w_wndp; } /* and get rid of the temporary file */ unlink(filnam); return TRUE; } /* * filter a buffer through an external DOS program * Bound to ^X # */ int filter_buffer( int f, int n) { int s ; /* return status from CLI */ struct buffer *bp ; /* pointer to buffer to zot */ char *mlarg ; char *line ; /* command line send to shell */ fname_t tmpnam ; /* place to store real file name */ static char bname1[] = "fltinp" ; static char filnam1[] = "fltinp" ; static char filnam2[] = "fltout" ; /* don't allow this command if restricted */ if( restflag) return resterr() ; if( curbp->b_mode & MDVIEW) /* don't allow this command if */ return rdonly() ; /* we are in read only mode */ /* get the filter name and its args */ s = newmlarg( &mlarg, "#", 0) ; if( s != TRUE) return s ; line = malloc( strlen( mlarg) + 16 + 1) ; if( line == NULL) { free( mlarg) ; return FALSE ; } strcpy( line, mlarg) ; free( mlarg) ; /* setup the proper file names */ bp = curbp; strcpy(tmpnam, bp->b_fname); /* save the original name */ strcpy(bp->b_fname, bname1); /* set it to our new one */ /* write it out, checking for errors */ if( writeout( filnam1) != TRUE) { mlwrite( "(Cannot write filter file)") ; strcpy( bp->b_fname, tmpnam) ; free( line) ; return FALSE ; } #if USG | BSD TTputc('\n'); /* Already have '\r' */ TTflush(); TTclose(); /* stty to old modes */ TTkclose(); strcat(line, " <fltinp >fltout"); ue_system( line) ; free( line) ; TTopen(); TTkopen(); TTflush(); sgarbf = TRUE; s = TRUE; #endif /* on failure, escape gracefully */ if (s != TRUE || (readin(filnam2, FALSE) == FALSE)) { mlwrite( "(Execution failed)") ; strcpy(bp->b_fname, tmpnam); unlink(filnam1); unlink(filnam2); return s; } /* reset file name */ strcpy(bp->b_fname, tmpnam); /* restore name */ bp->b_flag |= BFCHG; /* flag it as changed */ /* and get rid of the temporary file */ unlink(filnam1); unlink(filnam2); return TRUE; } /* end of spawn.c */