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    /*	$OpenBSD: modes.c,v 1.21 2017/05/30 07:05:22 florian Exp $	*/  | 
    
    
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    /* This file is in the public domain. */  | 
    
    
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    /*  | 
    
    
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     * Commands to toggle modes.   Without an argument, these functions will  | 
    
    
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     * toggle the given mode.  A negative or zero argument will turn the mode  | 
    
    
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     * off.  A positive argument will turn the mode on.  | 
    
    
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     */  | 
    
    
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    #include <sys/queue.h>  | 
    
    
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    #include <signal.h>  | 
    
    
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    #include <stdio.h>  | 
    
    
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    #include <string.h>  | 
    
    
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    #include "def.h"  | 
    
    
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    #include "kbd.h"  | 
    
    
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    int	changemode(int, int, char *);  | 
    
    
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    int	 defb_nmodes = 0;  | 
    
    
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    struct maps_s	*defb_modes[PBMODES] = { &fundamental_mode }; | 
    
    
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    int	 defb_flag = 0;  | 
    
    
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    int  | 
    
    
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    changemode(int f, int n, char *newmode)  | 
    
    
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    { | 
    
    
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    	int	 i;  | 
    
    
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    	struct maps_s	*m;  | 
    
    
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    	if ((m = name_mode(newmode)) == NULL) { | 
    
    
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    		dobeep();  | 
    
    
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    		ewprintf("Can't find mode %s", newmode); | 
    
    
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    		return (FALSE);  | 
    
    
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    	}  | 
    
    
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    	if (!(f & FFARG)) { | 
    
    
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    		for (i = 0; i <= curbp->b_nmodes; i++)  | 
    
    
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    			if (curbp->b_modes[i] == m) { | 
    
    
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    				/* mode already set */  | 
    
    
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    				n = 0;  | 
    
    
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    				break;  | 
    
    
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    			}  | 
    
    
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    	}  | 
    
    
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    	if (n > 0) { | 
    
    
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    		for (i = 0; i <= curbp->b_nmodes; i++)  | 
    
    
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    			if (curbp->b_modes[i] == m)  | 
    
    
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    				/* mode already set */  | 
    
    
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    				return (TRUE);  | 
    
    
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    		if (curbp->b_nmodes >= PBMODES - 1) { | 
    
    
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    			dobeep();  | 
    
    
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    			ewprintf("Too many modes"); | 
    
    
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    			return (FALSE);  | 
    
    
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    		}  | 
    
    
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    		curbp->b_modes[++(curbp->b_nmodes)] = m;  | 
    
    
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    	} else { | 
    
    
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    		/* fundamental is b_modes[0] and can't be unset */  | 
    
    
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    		for (i = 1; i <= curbp->b_nmodes && m != curbp->b_modes[i];  | 
    
    
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    		    i++);  | 
    
    
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    		if (i > curbp->b_nmodes)  | 
    
    
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    			return (TRUE);	/* mode wasn't set */  | 
    
    
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    		for (; i < curbp->b_nmodes; i++)  | 
    
    
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    			curbp->b_modes[i] = curbp->b_modes[i + 1];  | 
    
    
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    		curbp->b_nmodes--;  | 
    
    
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    	}  | 
    
    
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    	upmodes(curbp);  | 
    
    
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    	return (TRUE);  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    indentmode(int f, int n)  | 
    
    
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    { | 
    
    
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    	return (changemode(f, n, "indent"));  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    fillmode(int f, int n)  | 
    
    
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    { | 
    
    
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    	return (changemode(f, n, "fill"));  | 
    
    
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    }  | 
    
    
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    #ifdef NOTAB  | 
    
    
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    int  | 
    
    
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    notabmode(int f, int n)  | 
    
    
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    { | 
    
    
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    	if (changemode(f, n, "notab") == FALSE)  | 
    
    
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    		return (FALSE);  | 
    
    
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    	if (f & FFARG) { | 
    
    
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    		if (n <= 0)  | 
    
    
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    			curbp->b_flag &= ~BFNOTAB;  | 
    
    
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    		else  | 
    
    
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    			curbp->b_flag |= BFNOTAB;  | 
    
    
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    	} else  | 
    
    
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    		curbp->b_flag ^= BFNOTAB;  | 
    
    
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    	return (TRUE);  | 
    
    
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    }  | 
    
    
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    #endif	/* NOTAB */  | 
    
    
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    int  | 
    
    
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    overwrite_mode(int f, int n)  | 
    
    
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    { | 
    
    
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    	if (changemode(f, n, "overwrite") == FALSE)  | 
    
    
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    		return (FALSE);  | 
    
    
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    	if (f & FFARG) { | 
    
    
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    		if (n <= 0)  | 
    
    
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    			curbp->b_flag &= ~BFOVERWRITE;  | 
    
    
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    		else  | 
    
    
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    			curbp->b_flag |= BFOVERWRITE;  | 
    
    
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    	} else  | 
    
    
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    		curbp->b_flag ^= BFOVERWRITE;  | 
    
    
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    	return (TRUE);  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    set_default_mode(int f, int n)  | 
    
    
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    { | 
    
    
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    	int	 i;  | 
    
    
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    	struct maps_s	*m;  | 
    
    
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    	char	 modebuf[32], *bufp;  | 
    
    
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    	if ((bufp = eread("Set Default Mode: ", modebuf, sizeof(modebuf), | 
    
    
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    	    EFNEW)) == NULL)  | 
    
    
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    		return (ABORT);  | 
    
    
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    	else if (bufp[0] == '\0')  | 
    
    
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    		return (FALSE);  | 
    
    
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    	if ((m = name_mode(modebuf)) == NULL) { | 
    
    
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    		dobeep();  | 
    
    
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    		ewprintf("can't find mode %s", modebuf); | 
    
    
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    		return (FALSE);  | 
    
    
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    	}  | 
    
    
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    	if (!(f & FFARG)) { | 
    
    
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    		for (i = 0; i <= defb_nmodes; i++)  | 
    
    
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    			if (defb_modes[i] == m) { | 
    
    
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    				/* mode already set */  | 
    
    
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    				n = 0;  | 
    
    
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    				break;  | 
    
    
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    			}  | 
    
    
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    	}  | 
    
    
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    	if (n > 0) { | 
    
    
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    		for (i = 0; i <= defb_nmodes; i++)  | 
    
    
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    			if (defb_modes[i] == m)  | 
    
    
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    				/* mode already set */  | 
    
    
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    				return (TRUE);  | 
    
    
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    		if (defb_nmodes >= PBMODES - 1) { | 
    
    
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    			dobeep();  | 
    
    
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    			ewprintf("Too many modes"); | 
    
    
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    			return (FALSE);  | 
    
    
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    		}  | 
    
    
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    		defb_modes[++defb_nmodes] = m;  | 
    
    
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    	} else { | 
    
    
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    		/* fundamental is defb_modes[0] and can't be unset */  | 
    
    
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    		for (i = 1; i <= defb_nmodes && m != defb_modes[i]; i++);  | 
    
    
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    		if (i > defb_nmodes)  | 
    
    
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    			/* mode was not set */  | 
    
    
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    			return (TRUE);  | 
    
    
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    		for (; i < defb_nmodes; i++)  | 
    
    
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    			defb_modes[i] = defb_modes[i + 1];  | 
    
    
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    		defb_nmodes--;  | 
    
    
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    	}  | 
    
    
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    	if (strcmp(modebuf, "overwrite") == 0) { | 
    
    
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    		if (n <= 0)  | 
    
    
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    			defb_flag &= ~BFOVERWRITE;  | 
    
    
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    		else  | 
    
    
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    			defb_flag |= BFOVERWRITE;  | 
    
    
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    	}  | 
    
    
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    #ifdef NOTAB  | 
    
    
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    	if (strcmp(modebuf, "notab") == 0) { | 
    
    
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    		if (n <= 0)  | 
    
    
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    			defb_flag &= ~BFNOTAB;  | 
    
    
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    		else  | 
    
    
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    			defb_flag |= BFNOTAB;  | 
    
    
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    	}  | 
    
    
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    #endif	/* NOTAB */  | 
    
    
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    	return (TRUE);  | 
    
    
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    }  |