1 bc7cb1a1 2003-11-23 devnull /*
   2 bc7cb1a1 2003-11-23 devnull  * Editor
   3 bc7cb1a1 2003-11-23 devnull  */
   4 bc7cb1a1 2003-11-23 devnull #include <u.h>
   5 bc7cb1a1 2003-11-23 devnull #include <libc.h>
   6 bc7cb1a1 2003-11-23 devnull #include <bio.h>
   7 bc7cb1a1 2003-11-23 devnull #include <regexp.h>
   8 6b2d0fd9 2004-03-26 devnull 
   9 6b2d0fd9 2004-03-26 devnull #undef EOF	/* stdio? */
  10 bc7cb1a1 2003-11-23 devnull 
  11 bc7cb1a1 2003-11-23 devnull enum
  12 bc7cb1a1 2003-11-23 devnull {
  13 bc7cb1a1 2003-11-23 devnull 	FNSIZE	= 128,		/* file name */
  14 bc7cb1a1 2003-11-23 devnull 	LBSIZE	= 4096,		/* max line size */
  15 bc7cb1a1 2003-11-23 devnull 	BLKSIZE	= 4096,		/* block size in temp file */
  16 bc7cb1a1 2003-11-23 devnull 	NBLK	= 8191,		/* max size of temp file */
  17 bc7cb1a1 2003-11-23 devnull 	ESIZE	= 256,		/* max size of reg exp */
  18 bc7cb1a1 2003-11-23 devnull 	GBSIZE	= 256,		/* max size of global command */
  19 bc7cb1a1 2003-11-23 devnull 	MAXSUB	= 9,		/* max number of sub reg exp */
  20 bc7cb1a1 2003-11-23 devnull 	ESCFLG	= 0xFFFF,	/* escape Rune - user defined code */
  21 cbeb0b26 2006-04-01 devnull 	EOF	= -1
  22 bc7cb1a1 2003-11-23 devnull };
  23 bc7cb1a1 2003-11-23 devnull 
  24 bc7cb1a1 2003-11-23 devnull void	(*oldhup)(int);
  25 bc7cb1a1 2003-11-23 devnull void	(*oldquit)(int);
  26 bc7cb1a1 2003-11-23 devnull int*	addr1;
  27 bc7cb1a1 2003-11-23 devnull int*	addr2;
  28 bc7cb1a1 2003-11-23 devnull int	anymarks;
  29 bc7cb1a1 2003-11-23 devnull int	col;
  30 bc7cb1a1 2003-11-23 devnull long	count;
  31 bc7cb1a1 2003-11-23 devnull int*	dol;
  32 bc7cb1a1 2003-11-23 devnull int*	dot;
  33 bc7cb1a1 2003-11-23 devnull int	fchange;
  34 bc7cb1a1 2003-11-23 devnull char	file[FNSIZE];
  35 bc7cb1a1 2003-11-23 devnull Rune	genbuf[LBSIZE];
  36 bc7cb1a1 2003-11-23 devnull int	given;
  37 bc7cb1a1 2003-11-23 devnull Rune*	globp;
  38 bc7cb1a1 2003-11-23 devnull int	iblock;
  39 bc7cb1a1 2003-11-23 devnull int	ichanged;
  40 bc7cb1a1 2003-11-23 devnull int	io;
  41 bc7cb1a1 2003-11-23 devnull Biobuf	iobuf;
  42 bc7cb1a1 2003-11-23 devnull int	lastc;
  43 bc7cb1a1 2003-11-23 devnull char	line[70];
  44 bc7cb1a1 2003-11-23 devnull Rune*	linebp;
  45 bc7cb1a1 2003-11-23 devnull Rune	linebuf[LBSIZE];
  46 bc7cb1a1 2003-11-23 devnull int	listf;
  47 bc7cb1a1 2003-11-23 devnull int	listn;
  48 bc7cb1a1 2003-11-23 devnull Rune*	loc1;
  49 bc7cb1a1 2003-11-23 devnull Rune*	loc2;
  50 bc7cb1a1 2003-11-23 devnull int	names[26];
  51 bc7cb1a1 2003-11-23 devnull int	nleft;
  52 bc7cb1a1 2003-11-23 devnull int	oblock;
  53 bc7cb1a1 2003-11-23 devnull int	oflag;
  54 bc7cb1a1 2003-11-23 devnull Reprog	*pattern;
  55 bc7cb1a1 2003-11-23 devnull int	peekc;
  56 bc7cb1a1 2003-11-23 devnull int	pflag;
  57 bc7cb1a1 2003-11-23 devnull int	rescuing;
  58 cfa81d56 2009-09-16 russcox Rune	rhsbuf[LBSIZE/sizeof(Rune)];
  59 bc7cb1a1 2003-11-23 devnull char	savedfile[FNSIZE];
  60 bc7cb1a1 2003-11-23 devnull jmp_buf	savej;
  61 bc7cb1a1 2003-11-23 devnull int	subnewa;
  62 bc7cb1a1 2003-11-23 devnull int	subolda;
  63 bc7cb1a1 2003-11-23 devnull Resub	subexp[MAXSUB];
  64 bc7cb1a1 2003-11-23 devnull char*	tfname;
  65 bc7cb1a1 2003-11-23 devnull int	tline;
  66 bc7cb1a1 2003-11-23 devnull int	waiting;
  67 bc7cb1a1 2003-11-23 devnull int	wrapp;
  68 bc7cb1a1 2003-11-23 devnull int*	zero;
  69 bc7cb1a1 2003-11-23 devnull 
  70 bc7cb1a1 2003-11-23 devnull char	Q[]	= "";
  71 bc7cb1a1 2003-11-23 devnull char	T[]	= "TMP";
  72 bc7cb1a1 2003-11-23 devnull char	WRERR[]	= "WRITE ERROR";
  73 bc7cb1a1 2003-11-23 devnull int	bpagesize = 20;
  74 bc7cb1a1 2003-11-23 devnull char	hex[]	= "0123456789abcdef";
  75 bc7cb1a1 2003-11-23 devnull char*	linp	= line;
  76 bc7cb1a1 2003-11-23 devnull ulong	nlall = 128;
  77 bc7cb1a1 2003-11-23 devnull int	tfile	= -1;
  78 bc7cb1a1 2003-11-23 devnull int	vflag	= 1;
  79 bc7cb1a1 2003-11-23 devnull 
  80 bc7cb1a1 2003-11-23 devnull void	add(int);
  81 bc7cb1a1 2003-11-23 devnull int*	address(void);
  82 bc7cb1a1 2003-11-23 devnull int	append(int(*)(void), int*);
  83 bc7cb1a1 2003-11-23 devnull void	browse(void);
  84 bc7cb1a1 2003-11-23 devnull void	callunix(void);
  85 bc7cb1a1 2003-11-23 devnull void	commands(void);
  86 bc7cb1a1 2003-11-23 devnull void	compile(int);
  87 bc7cb1a1 2003-11-23 devnull int	compsub(void);
  88 bc7cb1a1 2003-11-23 devnull void	dosub(void);
  89 bc7cb1a1 2003-11-23 devnull void	error(char*);
  90 bc7cb1a1 2003-11-23 devnull int	match(int*);
  91 bc7cb1a1 2003-11-23 devnull void	exfile(int);
  92 bc7cb1a1 2003-11-23 devnull void	filename(int);
  93 bc7cb1a1 2003-11-23 devnull Rune*	getblock(int, int);
  94 bc7cb1a1 2003-11-23 devnull int	getchr(void);
  95 bc7cb1a1 2003-11-23 devnull int	getcopy(void);
  96 bc7cb1a1 2003-11-23 devnull int	getfile(void);
  97 bc7cb1a1 2003-11-23 devnull Rune*	getline(int);
  98 bc7cb1a1 2003-11-23 devnull int	getnum(void);
  99 bc7cb1a1 2003-11-23 devnull int	getsub(void);
 100 bc7cb1a1 2003-11-23 devnull int	gettty(void);
 101 bc7cb1a1 2003-11-23 devnull void	global(int);
 102 bc7cb1a1 2003-11-23 devnull void	init(void);
 103 bc7cb1a1 2003-11-23 devnull void	join(void);
 104 bc7cb1a1 2003-11-23 devnull void	move(int);
 105 bc7cb1a1 2003-11-23 devnull void	newline(void);
 106 bc7cb1a1 2003-11-23 devnull void	nonzero(void);
 107 bc7cb1a1 2003-11-23 devnull void	notifyf(void*, char*);
 108 bc7cb1a1 2003-11-23 devnull Rune*	place(Rune*, Rune*, Rune*);
 109 bc7cb1a1 2003-11-23 devnull void	printcom(void);
 110 bc7cb1a1 2003-11-23 devnull void	putchr(int);
 111 bc7cb1a1 2003-11-23 devnull void	putd(void);
 112 bc7cb1a1 2003-11-23 devnull void	putfile(void);
 113 bc7cb1a1 2003-11-23 devnull int	putline(void);
 114 bc7cb1a1 2003-11-23 devnull void	putshst(Rune*);
 115 bc7cb1a1 2003-11-23 devnull void	putst(char*);
 116 bc7cb1a1 2003-11-23 devnull void	quit(void);
 117 bc7cb1a1 2003-11-23 devnull void	rdelete(int*, int*);
 118 bc7cb1a1 2003-11-23 devnull void	regerror(char *);
 119 bc7cb1a1 2003-11-23 devnull void	reverse(int*, int*);
 120 bc7cb1a1 2003-11-23 devnull void	setnoaddr(void);
 121 bc7cb1a1 2003-11-23 devnull void	setwide(void);
 122 bc7cb1a1 2003-11-23 devnull void	squeeze(int);
 123 bc7cb1a1 2003-11-23 devnull void	substitute(int);
 124 bc7cb1a1 2003-11-23 devnull 
 125 bc7cb1a1 2003-11-23 devnull Rune La[] = { 'a', 0 };
 126 bc7cb1a1 2003-11-23 devnull Rune Lr[] = { 'r', 0 };
 127 bc7cb1a1 2003-11-23 devnull 
 128 90c3dab6 2006-07-23 devnull char tmp[] = "/var/tmp/eXXXXX";
 129 bc7cb1a1 2003-11-23 devnull 
 130 bc7cb1a1 2003-11-23 devnull void
 131 bc7cb1a1 2003-11-23 devnull main(int argc, char *argv[])
 132 bc7cb1a1 2003-11-23 devnull {
 133 bc7cb1a1 2003-11-23 devnull 	char *p1, *p2;
 134 bc7cb1a1 2003-11-23 devnull 
 135 bc7cb1a1 2003-11-23 devnull 	notify(notifyf);
 136 bc7cb1a1 2003-11-23 devnull 	ARGBEGIN {
 137 bc7cb1a1 2003-11-23 devnull 	case 'o':
 138 bc7cb1a1 2003-11-23 devnull 		oflag = 1;
 139 bc7cb1a1 2003-11-23 devnull 		vflag = 0;
 140 bc7cb1a1 2003-11-23 devnull 		break;
 141 bc7cb1a1 2003-11-23 devnull 	} ARGEND
 142 bc7cb1a1 2003-11-23 devnull 
 143 bc7cb1a1 2003-11-23 devnull 	USED(argc);
 144 bc7cb1a1 2003-11-23 devnull 	if(*argv && (strcmp(*argv, "-") == 0)) {
 145 bc7cb1a1 2003-11-23 devnull 		argv++;
 146 bc7cb1a1 2003-11-23 devnull 		vflag = 0;
 147 bc7cb1a1 2003-11-23 devnull 	}
 148 bc7cb1a1 2003-11-23 devnull 	if(oflag) {
 149 c8b6342d 2005-01-13 devnull 		p1 = "/dev/stdout";
 150 bc7cb1a1 2003-11-23 devnull 		p2 = savedfile;
 151 bc7cb1a1 2003-11-23 devnull 		while(*p2++ = *p1++)
 152 bc7cb1a1 2003-11-23 devnull 			;
 153 bc7cb1a1 2003-11-23 devnull 		globp = La;
 154 bc7cb1a1 2003-11-23 devnull 	} else
 155 bc7cb1a1 2003-11-23 devnull 	if(*argv) {
 156 bc7cb1a1 2003-11-23 devnull 		p1 = *argv;
 157 bc7cb1a1 2003-11-23 devnull 		p2 = savedfile;
 158 bc7cb1a1 2003-11-23 devnull 		while(*p2++ = *p1++)
 159 bc7cb1a1 2003-11-23 devnull 			if(p2 >= &savedfile[sizeof(savedfile)])
 160 bc7cb1a1 2003-11-23 devnull 				p2--;
 161 bc7cb1a1 2003-11-23 devnull 		globp = Lr;
 162 bc7cb1a1 2003-11-23 devnull 	}
 163 bc7cb1a1 2003-11-23 devnull 	zero = malloc((nlall+5)*sizeof(int*));
 164 bc7cb1a1 2003-11-23 devnull 	tfname = mktemp(tmp);
 165 bc7cb1a1 2003-11-23 devnull 	init();
 166 bc7cb1a1 2003-11-23 devnull 	setjmp(savej);
 167 bc7cb1a1 2003-11-23 devnull 	commands();
 168 bc7cb1a1 2003-11-23 devnull 	quit();
 169 bc7cb1a1 2003-11-23 devnull }
 170 bc7cb1a1 2003-11-23 devnull 
 171 bc7cb1a1 2003-11-23 devnull void
 172 bc7cb1a1 2003-11-23 devnull commands(void)
 173 bc7cb1a1 2003-11-23 devnull {
 174 bc7cb1a1 2003-11-23 devnull 	int *a1, c, temp;
 175 bc7cb1a1 2003-11-23 devnull 	char lastsep;
 176 bc7cb1a1 2003-11-23 devnull 	Dir *d;
 177 bc7cb1a1 2003-11-23 devnull 
 178 bc7cb1a1 2003-11-23 devnull 	for(;;) {
 179 bc7cb1a1 2003-11-23 devnull 		if(pflag) {
 180 bc7cb1a1 2003-11-23 devnull 			pflag = 0;
 181 bc7cb1a1 2003-11-23 devnull 			addr1 = addr2 = dot;
 182 bc7cb1a1 2003-11-23 devnull 			printcom();
 183 bc7cb1a1 2003-11-23 devnull 		}
 184 bc7cb1a1 2003-11-23 devnull 		c = '\n';
 185 bc7cb1a1 2003-11-23 devnull 		for(addr1 = 0;;) {
 186 bc7cb1a1 2003-11-23 devnull 			lastsep = c;
 187 bc7cb1a1 2003-11-23 devnull 			a1 = address();
 188 bc7cb1a1 2003-11-23 devnull 			c = getchr();
 189 bc7cb1a1 2003-11-23 devnull 			if(c != ',' && c != ';')
 190 bc7cb1a1 2003-11-23 devnull 				break;
 191 bc7cb1a1 2003-11-23 devnull 			if(lastsep == ',')
 192 bc7cb1a1 2003-11-23 devnull 				error(Q);
 193 bc7cb1a1 2003-11-23 devnull 			if(a1 == 0) {
 194 bc7cb1a1 2003-11-23 devnull 				a1 = zero+1;
 195 bc7cb1a1 2003-11-23 devnull 				if(a1 > dol)
 196 bc7cb1a1 2003-11-23 devnull 					a1--;
 197 bc7cb1a1 2003-11-23 devnull 			}
 198 bc7cb1a1 2003-11-23 devnull 			addr1 = a1;
 199 bc7cb1a1 2003-11-23 devnull 			if(c == ';')
 200 bc7cb1a1 2003-11-23 devnull 				dot = a1;
 201 bc7cb1a1 2003-11-23 devnull 		}
 202 bc7cb1a1 2003-11-23 devnull 		if(lastsep != '\n' && a1 == 0)
 203 bc7cb1a1 2003-11-23 devnull 			a1 = dol;
 204 bc7cb1a1 2003-11-23 devnull 		if((addr2=a1) == 0) {
 205 bc7cb1a1 2003-11-23 devnull 			given = 0;
 206 bc7cb1a1 2003-11-23 devnull 			addr2 = dot;	
 207 bc7cb1a1 2003-11-23 devnull 		} else
 208 bc7cb1a1 2003-11-23 devnull 			given = 1;
 209 bc7cb1a1 2003-11-23 devnull 		if(addr1 == 0)
 210 bc7cb1a1 2003-11-23 devnull 			addr1 = addr2;
 211 bc7cb1a1 2003-11-23 devnull 		switch(c) {
 212 bc7cb1a1 2003-11-23 devnull 
 213 bc7cb1a1 2003-11-23 devnull 		case 'a':
 214 bc7cb1a1 2003-11-23 devnull 			add(0);
 215 bc7cb1a1 2003-11-23 devnull 			continue;
 216 bc7cb1a1 2003-11-23 devnull 
 217 bc7cb1a1 2003-11-23 devnull 		case 'b':
 218 bc7cb1a1 2003-11-23 devnull 			nonzero();
 219 bc7cb1a1 2003-11-23 devnull 			browse();
 220 bc7cb1a1 2003-11-23 devnull 			continue;
 221 bc7cb1a1 2003-11-23 devnull 
 222 bc7cb1a1 2003-11-23 devnull 		case 'c':
 223 bc7cb1a1 2003-11-23 devnull 			nonzero();
 224 bc7cb1a1 2003-11-23 devnull 			newline();
 225 bc7cb1a1 2003-11-23 devnull 			rdelete(addr1, addr2);
 226 bc7cb1a1 2003-11-23 devnull 			append(gettty, addr1-1);
 227 bc7cb1a1 2003-11-23 devnull 			continue;
 228 bc7cb1a1 2003-11-23 devnull 
 229 bc7cb1a1 2003-11-23 devnull 		case 'd':
 230 bc7cb1a1 2003-11-23 devnull 			nonzero();
 231 bc7cb1a1 2003-11-23 devnull 			newline();
 232 bc7cb1a1 2003-11-23 devnull 			rdelete(addr1, addr2);
 233 bc7cb1a1 2003-11-23 devnull 			continue;
 234 bc7cb1a1 2003-11-23 devnull 
 235 bc7cb1a1 2003-11-23 devnull 		case 'E':
 236 bc7cb1a1 2003-11-23 devnull 			fchange = 0;
 237 bc7cb1a1 2003-11-23 devnull 			c = 'e';
 238 bc7cb1a1 2003-11-23 devnull 		case 'e':
 239 bc7cb1a1 2003-11-23 devnull 			setnoaddr();
 240 bc7cb1a1 2003-11-23 devnull 			if(vflag && fchange) {
 241 bc7cb1a1 2003-11-23 devnull 				fchange = 0;
 242 bc7cb1a1 2003-11-23 devnull 				error(Q);
 243 bc7cb1a1 2003-11-23 devnull 			}
 244 bc7cb1a1 2003-11-23 devnull 			filename(c);
 245 bc7cb1a1 2003-11-23 devnull 			init();
 246 bc7cb1a1 2003-11-23 devnull 			addr2 = zero;
 247 bc7cb1a1 2003-11-23 devnull 			goto caseread;
 248 bc7cb1a1 2003-11-23 devnull 
 249 bc7cb1a1 2003-11-23 devnull 		case 'f':
 250 bc7cb1a1 2003-11-23 devnull 			setnoaddr();
 251 bc7cb1a1 2003-11-23 devnull 			filename(c);
 252 bc7cb1a1 2003-11-23 devnull 			putst(savedfile);
 253 bc7cb1a1 2003-11-23 devnull 			continue;
 254 bc7cb1a1 2003-11-23 devnull 
 255 bc7cb1a1 2003-11-23 devnull 		case 'g':
 256 bc7cb1a1 2003-11-23 devnull 			global(1);
 257 bc7cb1a1 2003-11-23 devnull 			continue;
 258 bc7cb1a1 2003-11-23 devnull 
 259 bc7cb1a1 2003-11-23 devnull 		case 'i':
 260 bc7cb1a1 2003-11-23 devnull 			add(-1);
 261 bc7cb1a1 2003-11-23 devnull 			continue;
 262 bc7cb1a1 2003-11-23 devnull 
 263 bc7cb1a1 2003-11-23 devnull 
 264 bc7cb1a1 2003-11-23 devnull 		case 'j':
 265 bc7cb1a1 2003-11-23 devnull 			if(!given)
 266 bc7cb1a1 2003-11-23 devnull 				addr2++;
 267 bc7cb1a1 2003-11-23 devnull 			newline();
 268 bc7cb1a1 2003-11-23 devnull 			join();
 269 bc7cb1a1 2003-11-23 devnull 			continue;
 270 bc7cb1a1 2003-11-23 devnull 
 271 bc7cb1a1 2003-11-23 devnull 		case 'k':
 272 bc7cb1a1 2003-11-23 devnull 			nonzero();
 273 bc7cb1a1 2003-11-23 devnull 			c = getchr();
 274 bc7cb1a1 2003-11-23 devnull 			if(c < 'a' || c > 'z')
 275 bc7cb1a1 2003-11-23 devnull 				error(Q);
 276 bc7cb1a1 2003-11-23 devnull 			newline();
 277 bc7cb1a1 2003-11-23 devnull 			names[c-'a'] = *addr2 & ~01;
 278 bc7cb1a1 2003-11-23 devnull 			anymarks |= 01;
 279 bc7cb1a1 2003-11-23 devnull 			continue;
 280 bc7cb1a1 2003-11-23 devnull 
 281 bc7cb1a1 2003-11-23 devnull 		case 'm':
 282 bc7cb1a1 2003-11-23 devnull 			move(0);
 283 bc7cb1a1 2003-11-23 devnull 			continue;
 284 bc7cb1a1 2003-11-23 devnull 
 285 bc7cb1a1 2003-11-23 devnull 		case 'n':
 286 bc7cb1a1 2003-11-23 devnull 			listn++;
 287 bc7cb1a1 2003-11-23 devnull 			newline();
 288 bc7cb1a1 2003-11-23 devnull 			printcom();
 289 bc7cb1a1 2003-11-23 devnull 			continue;
 290 bc7cb1a1 2003-11-23 devnull 
 291 bc7cb1a1 2003-11-23 devnull 		case '\n':
 292 bc7cb1a1 2003-11-23 devnull 			if(a1==0) {
 293 bc7cb1a1 2003-11-23 devnull 				a1 = dot+1;
 294 bc7cb1a1 2003-11-23 devnull 				addr2 = a1;
 295 bc7cb1a1 2003-11-23 devnull 				addr1 = a1;
 296 bc7cb1a1 2003-11-23 devnull 			}
 297 bc7cb1a1 2003-11-23 devnull 			if(lastsep==';')
 298 bc7cb1a1 2003-11-23 devnull 				addr1 = a1;
 299 bc7cb1a1 2003-11-23 devnull 			printcom();
 300 bc7cb1a1 2003-11-23 devnull 			continue;
 301 bc7cb1a1 2003-11-23 devnull 
 302 bc7cb1a1 2003-11-23 devnull 		case 'l':
 303 bc7cb1a1 2003-11-23 devnull 			listf++;
 304 bc7cb1a1 2003-11-23 devnull 		case 'p':
 305 bc7cb1a1 2003-11-23 devnull 		case 'P':
 306 bc7cb1a1 2003-11-23 devnull 			newline();
 307 bc7cb1a1 2003-11-23 devnull 			printcom();
 308 bc7cb1a1 2003-11-23 devnull 			continue;
 309 bc7cb1a1 2003-11-23 devnull 
 310 bc7cb1a1 2003-11-23 devnull 		case 'Q':
 311 bc7cb1a1 2003-11-23 devnull 			fchange = 0;
 312 bc7cb1a1 2003-11-23 devnull 		case 'q':
 313 bc7cb1a1 2003-11-23 devnull 			setnoaddr();
 314 bc7cb1a1 2003-11-23 devnull 			newline();
 315 bc7cb1a1 2003-11-23 devnull 			quit();
 316 bc7cb1a1 2003-11-23 devnull 
 317 bc7cb1a1 2003-11-23 devnull 		case 'r':
 318 bc7cb1a1 2003-11-23 devnull 			filename(c);
 319 bc7cb1a1 2003-11-23 devnull 		caseread:
 320 bc7cb1a1 2003-11-23 devnull 			if((io=open(file, OREAD)) < 0) {
 321 bc7cb1a1 2003-11-23 devnull 				lastc = '\n';
 322 bc7cb1a1 2003-11-23 devnull 				error(file);
 323 bc7cb1a1 2003-11-23 devnull 			}
 324 bc7cb1a1 2003-11-23 devnull 			if((d = dirfstat(io)) != nil){
 325 bc7cb1a1 2003-11-23 devnull 				if(d->mode & DMAPPEND)
 326 bc7cb1a1 2003-11-23 devnull 					print("warning: %s is append only\n", file);
 327 bc7cb1a1 2003-11-23 devnull 				free(d);
 328 bc7cb1a1 2003-11-23 devnull 			}
 329 bc7cb1a1 2003-11-23 devnull 			Binit(&iobuf, io, OREAD);
 330 bc7cb1a1 2003-11-23 devnull 			setwide();
 331 bc7cb1a1 2003-11-23 devnull 			squeeze(0);
 332 bc7cb1a1 2003-11-23 devnull 			c = zero != dol;
 333 bc7cb1a1 2003-11-23 devnull 			append(getfile, addr2);
 334 bc7cb1a1 2003-11-23 devnull 			exfile(OREAD);
 335 bc7cb1a1 2003-11-23 devnull 
 336 bc7cb1a1 2003-11-23 devnull 			fchange = c;
 337 bc7cb1a1 2003-11-23 devnull 			continue;
 338 bc7cb1a1 2003-11-23 devnull 
 339 bc7cb1a1 2003-11-23 devnull 		case 's':
 340 bc7cb1a1 2003-11-23 devnull 			nonzero();
 341 bc7cb1a1 2003-11-23 devnull 			substitute(globp != 0);
 342 bc7cb1a1 2003-11-23 devnull 			continue;
 343 bc7cb1a1 2003-11-23 devnull 
 344 bc7cb1a1 2003-11-23 devnull 		case 't':
 345 bc7cb1a1 2003-11-23 devnull 			move(1);
 346 bc7cb1a1 2003-11-23 devnull 			continue;
 347 bc7cb1a1 2003-11-23 devnull 
 348 bc7cb1a1 2003-11-23 devnull 		case 'u':
 349 bc7cb1a1 2003-11-23 devnull 			nonzero();
 350 bc7cb1a1 2003-11-23 devnull 			newline();
 351 bc7cb1a1 2003-11-23 devnull 			if((*addr2&~01) != subnewa)
 352 bc7cb1a1 2003-11-23 devnull 				error(Q);
 353 bc7cb1a1 2003-11-23 devnull 			*addr2 = subolda;
 354 bc7cb1a1 2003-11-23 devnull 			dot = addr2;
 355 bc7cb1a1 2003-11-23 devnull 			continue;
 356 bc7cb1a1 2003-11-23 devnull 
 357 bc7cb1a1 2003-11-23 devnull 		case 'v':
 358 bc7cb1a1 2003-11-23 devnull 			global(0);
 359 bc7cb1a1 2003-11-23 devnull 			continue;
 360 bc7cb1a1 2003-11-23 devnull 
 361 bc7cb1a1 2003-11-23 devnull 		case 'W':
 362 bc7cb1a1 2003-11-23 devnull 			wrapp++;
 363 bc7cb1a1 2003-11-23 devnull 		case 'w':
 364 bc7cb1a1 2003-11-23 devnull 			setwide();
 365 bc7cb1a1 2003-11-23 devnull 			squeeze(dol>zero);
 366 bc7cb1a1 2003-11-23 devnull 			temp = getchr();
 367 bc7cb1a1 2003-11-23 devnull 			if(temp != 'q' && temp != 'Q') {
 368 bc7cb1a1 2003-11-23 devnull 				peekc = temp;
 369 bc7cb1a1 2003-11-23 devnull 				temp = 0;
 370 bc7cb1a1 2003-11-23 devnull 			}
 371 bc7cb1a1 2003-11-23 devnull 			filename(c);
 372 bc7cb1a1 2003-11-23 devnull 			if(!wrapp ||
 373 bc7cb1a1 2003-11-23 devnull 			  ((io = open(file, OWRITE)) == -1) ||
 374 bc7cb1a1 2003-11-23 devnull 			  ((seek(io, 0L, 2)) == -1))
 375 bc7cb1a1 2003-11-23 devnull 				if((io = create(file, OWRITE, 0666)) < 0)
 376 bc7cb1a1 2003-11-23 devnull 					error(file);
 377 bc7cb1a1 2003-11-23 devnull 			Binit(&iobuf, io, OWRITE);
 378 bc7cb1a1 2003-11-23 devnull 			wrapp = 0;
 379 bc7cb1a1 2003-11-23 devnull 			if(dol > zero)
 380 bc7cb1a1 2003-11-23 devnull 				putfile();
 381 bc7cb1a1 2003-11-23 devnull 			exfile(OWRITE);
 382 bc7cb1a1 2003-11-23 devnull 			if(addr1<=zero+1 && addr2==dol)
 383 bc7cb1a1 2003-11-23 devnull 				fchange = 0;
 384 bc7cb1a1 2003-11-23 devnull 			if(temp == 'Q')
 385 bc7cb1a1 2003-11-23 devnull 				fchange = 0;
 386 bc7cb1a1 2003-11-23 devnull 			if(temp)
 387 bc7cb1a1 2003-11-23 devnull 				quit();
 388 bc7cb1a1 2003-11-23 devnull 			continue;
 389 bc7cb1a1 2003-11-23 devnull 
 390 bc7cb1a1 2003-11-23 devnull 		case '=':
 391 bc7cb1a1 2003-11-23 devnull 			setwide();
 392 bc7cb1a1 2003-11-23 devnull 			squeeze(0);
 393 bc7cb1a1 2003-11-23 devnull 			newline();
 394 bc7cb1a1 2003-11-23 devnull 			count = addr2 - zero;
 395 bc7cb1a1 2003-11-23 devnull 			putd();
 396 bb0266fe 2005-05-07 devnull 			putchr('\n');
 397 bc7cb1a1 2003-11-23 devnull 			continue;
 398 bc7cb1a1 2003-11-23 devnull 
 399 bc7cb1a1 2003-11-23 devnull 		case '!':
 400 bc7cb1a1 2003-11-23 devnull 			callunix();
 401 bc7cb1a1 2003-11-23 devnull 			continue;
 402 bc7cb1a1 2003-11-23 devnull 
 403 bc7cb1a1 2003-11-23 devnull 		case EOF:
 404 bc7cb1a1 2003-11-23 devnull 			return;
 405 bc7cb1a1 2003-11-23 devnull 
 406 bc7cb1a1 2003-11-23 devnull 		}
 407 bc7cb1a1 2003-11-23 devnull 		error(Q);
 408 bc7cb1a1 2003-11-23 devnull 	}
 409 bc7cb1a1 2003-11-23 devnull }
 410 bc7cb1a1 2003-11-23 devnull 
 411 bc7cb1a1 2003-11-23 devnull void
 412 bc7cb1a1 2003-11-23 devnull printcom(void)
 413 bc7cb1a1 2003-11-23 devnull {
 414 bc7cb1a1 2003-11-23 devnull 	int *a1;
 415 bc7cb1a1 2003-11-23 devnull 
 416 bc7cb1a1 2003-11-23 devnull 	nonzero();
 417 bc7cb1a1 2003-11-23 devnull 	a1 = addr1;
 418 bc7cb1a1 2003-11-23 devnull 	do {
 419 bc7cb1a1 2003-11-23 devnull 		if(listn) {
 420 bc7cb1a1 2003-11-23 devnull 			count = a1-zero;
 421 bc7cb1a1 2003-11-23 devnull 			putd();
 422 bb0266fe 2005-05-07 devnull 			putchr('\t');
 423 bc7cb1a1 2003-11-23 devnull 		}
 424 bc7cb1a1 2003-11-23 devnull 		putshst(getline(*a1++));
 425 bc7cb1a1 2003-11-23 devnull 	} while(a1 <= addr2);
 426 bc7cb1a1 2003-11-23 devnull 	dot = addr2;
 427 bc7cb1a1 2003-11-23 devnull 	listf = 0;
 428 bc7cb1a1 2003-11-23 devnull 	listn = 0;
 429 bc7cb1a1 2003-11-23 devnull 	pflag = 0;
 430 bc7cb1a1 2003-11-23 devnull }
 431 bc7cb1a1 2003-11-23 devnull 
 432 bc7cb1a1 2003-11-23 devnull int*
 433 bc7cb1a1 2003-11-23 devnull address(void)
 434 bc7cb1a1 2003-11-23 devnull {
 435 bc7cb1a1 2003-11-23 devnull 	int sign, *a, opcnt, nextopand, *b, c;
 436 bc7cb1a1 2003-11-23 devnull 
 437 bc7cb1a1 2003-11-23 devnull 	nextopand = -1;
 438 bc7cb1a1 2003-11-23 devnull 	sign = 1;
 439 bc7cb1a1 2003-11-23 devnull 	opcnt = 0;
 440 bc7cb1a1 2003-11-23 devnull 	a = dot;
 441 bc7cb1a1 2003-11-23 devnull 	do {
 442 bc7cb1a1 2003-11-23 devnull 		do {
 443 bc7cb1a1 2003-11-23 devnull 			c = getchr();
 444 bc7cb1a1 2003-11-23 devnull 		} while(c == ' ' || c == '\t');
 445 bc7cb1a1 2003-11-23 devnull 		if(c >= '0' && c <= '9') {
 446 bc7cb1a1 2003-11-23 devnull 			peekc = c;
 447 bc7cb1a1 2003-11-23 devnull 			if(!opcnt)
 448 bc7cb1a1 2003-11-23 devnull 				a = zero;
 449 bc7cb1a1 2003-11-23 devnull 			a += sign*getnum();
 450 bc7cb1a1 2003-11-23 devnull 		} else
 451 bc7cb1a1 2003-11-23 devnull 		switch(c) {
 452 bc7cb1a1 2003-11-23 devnull 		case '$':
 453 bc7cb1a1 2003-11-23 devnull 			a = dol;
 454 bc7cb1a1 2003-11-23 devnull 		case '.':
 455 bc7cb1a1 2003-11-23 devnull 			if(opcnt)
 456 bc7cb1a1 2003-11-23 devnull 				error(Q);
 457 bc7cb1a1 2003-11-23 devnull 			break;
 458 bc7cb1a1 2003-11-23 devnull 		case '\'':
 459 bc7cb1a1 2003-11-23 devnull 			c = getchr();
 460 bc7cb1a1 2003-11-23 devnull 			if(opcnt || c < 'a' || c > 'z')
 461 bc7cb1a1 2003-11-23 devnull 				error(Q);
 462 bc7cb1a1 2003-11-23 devnull 			a = zero;
 463 bc7cb1a1 2003-11-23 devnull 			do {
 464 bc7cb1a1 2003-11-23 devnull 				a++;
 465 bc7cb1a1 2003-11-23 devnull 			} while(a <= dol && names[c-'a'] != (*a & ~01));
 466 bc7cb1a1 2003-11-23 devnull 			break;
 467 bc7cb1a1 2003-11-23 devnull 		case '?':
 468 bc7cb1a1 2003-11-23 devnull 			sign = -sign;
 469 bc7cb1a1 2003-11-23 devnull 		case '/':
 470 bc7cb1a1 2003-11-23 devnull 			compile(c);
 471 bc7cb1a1 2003-11-23 devnull 			b = a;
 472 bc7cb1a1 2003-11-23 devnull 			for(;;) {
 473 bc7cb1a1 2003-11-23 devnull 				a += sign;
 474 bc7cb1a1 2003-11-23 devnull 				if(a <= zero)
 475 bc7cb1a1 2003-11-23 devnull 					a = dol;
 476 bc7cb1a1 2003-11-23 devnull 				if(a > dol)
 477 bc7cb1a1 2003-11-23 devnull 					a = zero;
 478 bc7cb1a1 2003-11-23 devnull 				if(match(a))
 479 bc7cb1a1 2003-11-23 devnull 					break;
 480 bc7cb1a1 2003-11-23 devnull 				if(a == b)
 481 bc7cb1a1 2003-11-23 devnull 					error(Q);
 482 bc7cb1a1 2003-11-23 devnull 			}
 483 bc7cb1a1 2003-11-23 devnull 			break;
 484 bc7cb1a1 2003-11-23 devnull 		default:
 485 bc7cb1a1 2003-11-23 devnull 			if(nextopand == opcnt) {
 486 bc7cb1a1 2003-11-23 devnull 				a += sign;
 487 bc7cb1a1 2003-11-23 devnull 				if(a < zero || dol < a)
 488 bc7cb1a1 2003-11-23 devnull 					continue;       /* error(Q); */
 489 bc7cb1a1 2003-11-23 devnull 			}
 490 bc7cb1a1 2003-11-23 devnull 			if(c != '+' && c != '-' && c != '^') {
 491 bc7cb1a1 2003-11-23 devnull 				peekc = c;
 492 bc7cb1a1 2003-11-23 devnull 				if(opcnt == 0)
 493 bc7cb1a1 2003-11-23 devnull 					a = 0;
 494 bc7cb1a1 2003-11-23 devnull 				return a;
 495 bc7cb1a1 2003-11-23 devnull 			}
 496 bc7cb1a1 2003-11-23 devnull 			sign = 1;
 497 bc7cb1a1 2003-11-23 devnull 			if(c != '+')
 498 bc7cb1a1 2003-11-23 devnull 				sign = -sign;
 499 bc7cb1a1 2003-11-23 devnull 			nextopand = ++opcnt;
 500 bc7cb1a1 2003-11-23 devnull 			continue;
 501 bc7cb1a1 2003-11-23 devnull 		}
 502 bc7cb1a1 2003-11-23 devnull 		sign = 1;
 503 bc7cb1a1 2003-11-23 devnull 		opcnt++;
 504 bc7cb1a1 2003-11-23 devnull 	} while(zero <= a && a <= dol);
 505 bc7cb1a1 2003-11-23 devnull 	error(Q);
 506 bc7cb1a1 2003-11-23 devnull 	return 0;
 507 bc7cb1a1 2003-11-23 devnull }
 508 bc7cb1a1 2003-11-23 devnull 
 509 bc7cb1a1 2003-11-23 devnull int
 510 bc7cb1a1 2003-11-23 devnull getnum(void)
 511 bc7cb1a1 2003-11-23 devnull {
 512 bc7cb1a1 2003-11-23 devnull 	int r, c;
 513 bc7cb1a1 2003-11-23 devnull 
 514 bc7cb1a1 2003-11-23 devnull 	r = 0;
 515 bc7cb1a1 2003-11-23 devnull 	for(;;) {
 516 bc7cb1a1 2003-11-23 devnull 		c = getchr();
 517 bc7cb1a1 2003-11-23 devnull 		if(c < '0' || c > '9')
 518 bc7cb1a1 2003-11-23 devnull 			break;
 519 bc7cb1a1 2003-11-23 devnull 		r = r*10 + (c-'0');
 520 bc7cb1a1 2003-11-23 devnull 	}
 521 bc7cb1a1 2003-11-23 devnull 	peekc = c;
 522 bc7cb1a1 2003-11-23 devnull 	return r;
 523 bc7cb1a1 2003-11-23 devnull }
 524 bc7cb1a1 2003-11-23 devnull 
 525 bc7cb1a1 2003-11-23 devnull void
 526 bc7cb1a1 2003-11-23 devnull setwide(void)
 527 bc7cb1a1 2003-11-23 devnull {
 528 bc7cb1a1 2003-11-23 devnull 	if(!given) {
 529 bc7cb1a1 2003-11-23 devnull 		addr1 = zero + (dol>zero);
 530 bc7cb1a1 2003-11-23 devnull 		addr2 = dol;
 531 bc7cb1a1 2003-11-23 devnull 	}
 532 bc7cb1a1 2003-11-23 devnull }
 533 bc7cb1a1 2003-11-23 devnull 
 534 bc7cb1a1 2003-11-23 devnull void
 535 bc7cb1a1 2003-11-23 devnull setnoaddr(void)
 536 bc7cb1a1 2003-11-23 devnull {
 537 bc7cb1a1 2003-11-23 devnull 	if(given)
 538 bc7cb1a1 2003-11-23 devnull 		error(Q);
 539 bc7cb1a1 2003-11-23 devnull }
 540 bc7cb1a1 2003-11-23 devnull 
 541 bc7cb1a1 2003-11-23 devnull void
 542 bc7cb1a1 2003-11-23 devnull nonzero(void)
 543 bc7cb1a1 2003-11-23 devnull {
 544 bc7cb1a1 2003-11-23 devnull 	squeeze(1);
 545 bc7cb1a1 2003-11-23 devnull }
 546 bc7cb1a1 2003-11-23 devnull 
 547 bc7cb1a1 2003-11-23 devnull void
 548 bc7cb1a1 2003-11-23 devnull squeeze(int i)
 549 bc7cb1a1 2003-11-23 devnull {
 550 bc7cb1a1 2003-11-23 devnull 	if(addr1 < zero+i || addr2 > dol || addr1 > addr2)
 551 bc7cb1a1 2003-11-23 devnull 		error(Q);
 552 bc7cb1a1 2003-11-23 devnull }
 553 bc7cb1a1 2003-11-23 devnull 
 554 bc7cb1a1 2003-11-23 devnull void
 555 bc7cb1a1 2003-11-23 devnull newline(void)
 556 bc7cb1a1 2003-11-23 devnull {
 557 bc7cb1a1 2003-11-23 devnull 	int c;
 558 bc7cb1a1 2003-11-23 devnull 
 559 bc7cb1a1 2003-11-23 devnull 	c = getchr();
 560 bc7cb1a1 2003-11-23 devnull 	if(c == '\n' || c == EOF)
 561 bc7cb1a1 2003-11-23 devnull 		return;
 562 bc7cb1a1 2003-11-23 devnull 	if(c == 'p' || c == 'l' || c == 'n') {
 563 bc7cb1a1 2003-11-23 devnull 		pflag++;
 564 bc7cb1a1 2003-11-23 devnull 		if(c == 'l')
 565 bc7cb1a1 2003-11-23 devnull 			listf++;
 566 bc7cb1a1 2003-11-23 devnull 		else
 567 bc7cb1a1 2003-11-23 devnull 		if(c == 'n')
 568 bc7cb1a1 2003-11-23 devnull 			listn++;
 569 bc7cb1a1 2003-11-23 devnull 		c = getchr();
 570 bc7cb1a1 2003-11-23 devnull 		if(c == '\n')
 571 bc7cb1a1 2003-11-23 devnull 			return;
 572 bc7cb1a1 2003-11-23 devnull 	}
 573 bc7cb1a1 2003-11-23 devnull 	error(Q);
 574 bc7cb1a1 2003-11-23 devnull }
 575 bc7cb1a1 2003-11-23 devnull 
 576 bc7cb1a1 2003-11-23 devnull void
 577 bc7cb1a1 2003-11-23 devnull filename(int comm)
 578 bc7cb1a1 2003-11-23 devnull {
 579 bc7cb1a1 2003-11-23 devnull 	char *p1, *p2;
 580 bc7cb1a1 2003-11-23 devnull 	Rune rune;
 581 bc7cb1a1 2003-11-23 devnull 	int c;
 582 bc7cb1a1 2003-11-23 devnull 
 583 bc7cb1a1 2003-11-23 devnull 	count = 0;
 584 bc7cb1a1 2003-11-23 devnull 	c = getchr();
 585 bc7cb1a1 2003-11-23 devnull 	if(c == '\n' || c == EOF) {
 586 bc7cb1a1 2003-11-23 devnull 		p1 = savedfile;
 587 bc7cb1a1 2003-11-23 devnull 		if(*p1 == 0 && comm != 'f')
 588 bc7cb1a1 2003-11-23 devnull 			error(Q);
 589 bc7cb1a1 2003-11-23 devnull 		p2 = file;
 590 bc7cb1a1 2003-11-23 devnull 		while(*p2++ = *p1++)
 591 bc7cb1a1 2003-11-23 devnull 			;
 592 bc7cb1a1 2003-11-23 devnull 		return;
 593 bc7cb1a1 2003-11-23 devnull 	}
 594 bc7cb1a1 2003-11-23 devnull 	if(c != ' ')
 595 bc7cb1a1 2003-11-23 devnull 		error(Q);
 596 bc7cb1a1 2003-11-23 devnull 	while((c=getchr()) == ' ')
 597 bc7cb1a1 2003-11-23 devnull 		;
 598 bc7cb1a1 2003-11-23 devnull 	if(c == '\n')
 599 bc7cb1a1 2003-11-23 devnull 		error(Q);
 600 bc7cb1a1 2003-11-23 devnull 	p1 = file;
 601 bc7cb1a1 2003-11-23 devnull 	do {
 602 bc7cb1a1 2003-11-23 devnull 		if(p1 >= &file[sizeof(file)-6] || c == ' ' || c == EOF)
 603 bc7cb1a1 2003-11-23 devnull 			error(Q);
 604 bc7cb1a1 2003-11-23 devnull 		rune = c;
 605 bc7cb1a1 2003-11-23 devnull 		p1 += runetochar(p1, &rune);
 606 bc7cb1a1 2003-11-23 devnull 	} while((c=getchr()) != '\n');
 607 bc7cb1a1 2003-11-23 devnull 	*p1 = 0;
 608 bc7cb1a1 2003-11-23 devnull 	if(savedfile[0] == 0 || comm == 'e' || comm == 'f') {
 609 bc7cb1a1 2003-11-23 devnull 		p1 = savedfile;
 610 bc7cb1a1 2003-11-23 devnull 		p2 = file;
 611 bc7cb1a1 2003-11-23 devnull 		while(*p1++ = *p2++)
 612 bc7cb1a1 2003-11-23 devnull 			;
 613 bc7cb1a1 2003-11-23 devnull 	}
 614 bc7cb1a1 2003-11-23 devnull }
 615 bc7cb1a1 2003-11-23 devnull 
 616 bc7cb1a1 2003-11-23 devnull void
 617 bc7cb1a1 2003-11-23 devnull exfile(int om)
 618 bc7cb1a1 2003-11-23 devnull {
 619 bc7cb1a1 2003-11-23 devnull 
 620 bc7cb1a1 2003-11-23 devnull 	if(om == OWRITE)
 621 bc7cb1a1 2003-11-23 devnull 		if(Bflush(&iobuf) < 0)
 622 bc7cb1a1 2003-11-23 devnull 			error(Q);
 623 bc7cb1a1 2003-11-23 devnull 	close(io);
 624 bc7cb1a1 2003-11-23 devnull 	io = -1;
 625 bc7cb1a1 2003-11-23 devnull 	if(vflag) {
 626 bc7cb1a1 2003-11-23 devnull 		putd();
 627 bb0266fe 2005-05-07 devnull 		putchr('\n');
 628 bc7cb1a1 2003-11-23 devnull 	}
 629 bc7cb1a1 2003-11-23 devnull }
 630 bc7cb1a1 2003-11-23 devnull 
 631 bc7cb1a1 2003-11-23 devnull void
 632 bc7cb1a1 2003-11-23 devnull error1(char *s)
 633 bc7cb1a1 2003-11-23 devnull {
 634 bc7cb1a1 2003-11-23 devnull 	int c;
 635 bc7cb1a1 2003-11-23 devnull 
 636 bc7cb1a1 2003-11-23 devnull 	wrapp = 0;
 637 bc7cb1a1 2003-11-23 devnull 	listf = 0;
 638 bc7cb1a1 2003-11-23 devnull 	listn = 0;
 639 bc7cb1a1 2003-11-23 devnull 	count = 0;
 640 bc7cb1a1 2003-11-23 devnull 	seek(0, 0, 2);
 641 bc7cb1a1 2003-11-23 devnull 	pflag = 0;
 642 bc7cb1a1 2003-11-23 devnull 	if(globp)
 643 bc7cb1a1 2003-11-23 devnull 		lastc = '\n';
 644 bc7cb1a1 2003-11-23 devnull 	globp = 0;
 645 bc7cb1a1 2003-11-23 devnull 	peekc = lastc;
 646 bc7cb1a1 2003-11-23 devnull 	if(lastc)
 647 bc7cb1a1 2003-11-23 devnull 		for(;;) {
 648 bc7cb1a1 2003-11-23 devnull 			c = getchr();
 649 bc7cb1a1 2003-11-23 devnull 			if(c == '\n' || c == EOF)
 650 bc7cb1a1 2003-11-23 devnull 				break;
 651 bc7cb1a1 2003-11-23 devnull 		}
 652 bc7cb1a1 2003-11-23 devnull 	if(io > 0) {
 653 bc7cb1a1 2003-11-23 devnull 		close(io);
 654 bc7cb1a1 2003-11-23 devnull 		io = -1;
 655 bc7cb1a1 2003-11-23 devnull 	}
 656 bb0266fe 2005-05-07 devnull 	putchr('?');
 657 bc7cb1a1 2003-11-23 devnull 	putst(s);
 658 bc7cb1a1 2003-11-23 devnull }
 659 bc7cb1a1 2003-11-23 devnull 
 660 bc7cb1a1 2003-11-23 devnull void
 661 bc7cb1a1 2003-11-23 devnull error(char *s)
 662 bc7cb1a1 2003-11-23 devnull {
 663 bc7cb1a1 2003-11-23 devnull 	error1(s);
 664 bc7cb1a1 2003-11-23 devnull 	longjmp(savej, 1);
 665 bc7cb1a1 2003-11-23 devnull }
 666 bc7cb1a1 2003-11-23 devnull 
 667 bc7cb1a1 2003-11-23 devnull void
 668 bc7cb1a1 2003-11-23 devnull rescue(void)
 669 bc7cb1a1 2003-11-23 devnull {
 670 bc7cb1a1 2003-11-23 devnull 	rescuing = 1;
 671 bc7cb1a1 2003-11-23 devnull 	if(dol > zero) {
 672 bc7cb1a1 2003-11-23 devnull 		addr1 = zero+1;
 673 bc7cb1a1 2003-11-23 devnull 		addr2 = dol;
 674 bc7cb1a1 2003-11-23 devnull 		io = create("ed.hup", OWRITE, 0666);
 675 bc7cb1a1 2003-11-23 devnull 		if(io > 0){
 676 bc7cb1a1 2003-11-23 devnull 			Binit(&iobuf, io, OWRITE);
 677 bc7cb1a1 2003-11-23 devnull 			putfile();
 678 bc7cb1a1 2003-11-23 devnull 		}
 679 bc7cb1a1 2003-11-23 devnull 	}
 680 bc7cb1a1 2003-11-23 devnull 	fchange = 0;
 681 bc7cb1a1 2003-11-23 devnull 	quit();
 682 bc7cb1a1 2003-11-23 devnull }
 683 bc7cb1a1 2003-11-23 devnull 
 684 bc7cb1a1 2003-11-23 devnull void
 685 bc7cb1a1 2003-11-23 devnull notifyf(void *a, char *s)
 686 bc7cb1a1 2003-11-23 devnull {
 687 bc7cb1a1 2003-11-23 devnull 	if(strcmp(s, "interrupt") == 0){
 688 bc7cb1a1 2003-11-23 devnull 		if(rescuing || waiting)
 689 bc7cb1a1 2003-11-23 devnull 			noted(NCONT);
 690 bb0266fe 2005-05-07 devnull 		putchr('\n');
 691 bc7cb1a1 2003-11-23 devnull 		lastc = '\n';
 692 bc7cb1a1 2003-11-23 devnull 		error1(Q);
 693 bc7cb1a1 2003-11-23 devnull 		notejmp(a, savej, 0);
 694 bc7cb1a1 2003-11-23 devnull 	}
 695 90c3dab6 2006-07-23 devnull 	if(strcmp(s, "hangup") == 0 || strcmp(s, "kill") == 0){
 696 bc7cb1a1 2003-11-23 devnull 		if(rescuing)
 697 bc7cb1a1 2003-11-23 devnull 			noted(NDFLT);
 698 bc7cb1a1 2003-11-23 devnull 		rescue();
 699 bc7cb1a1 2003-11-23 devnull 	}
 700 a0f1e21f 2004-04-20 devnull 	if(strstr(s, "child"))
 701 a0f1e21f 2004-04-20 devnull 		noted(NCONT);
 702 bc7cb1a1 2003-11-23 devnull 	fprint(2, "ed: note: %s\n", s);
 703 bc7cb1a1 2003-11-23 devnull 	abort();
 704 bc7cb1a1 2003-11-23 devnull }
 705 bc7cb1a1 2003-11-23 devnull 
 706 bc7cb1a1 2003-11-23 devnull int
 707 bc7cb1a1 2003-11-23 devnull getchr(void)
 708 bc7cb1a1 2003-11-23 devnull {
 709 bc7cb1a1 2003-11-23 devnull 	char s[UTFmax];
 710 bc7cb1a1 2003-11-23 devnull 	int i;
 711 bc7cb1a1 2003-11-23 devnull 	Rune r;
 712 bc7cb1a1 2003-11-23 devnull 
 713 bc7cb1a1 2003-11-23 devnull 	if(lastc = peekc) {
 714 bc7cb1a1 2003-11-23 devnull 		peekc = 0;
 715 bc7cb1a1 2003-11-23 devnull 		return lastc;
 716 bc7cb1a1 2003-11-23 devnull 	}
 717 bc7cb1a1 2003-11-23 devnull 	if(globp) {
 718 bc7cb1a1 2003-11-23 devnull 		if((lastc=*globp++) != 0)
 719 bc7cb1a1 2003-11-23 devnull 			return lastc;
 720 bc7cb1a1 2003-11-23 devnull 		globp = 0;
 721 bc7cb1a1 2003-11-23 devnull 		return EOF;
 722 bc7cb1a1 2003-11-23 devnull 	}
 723 bc7cb1a1 2003-11-23 devnull 	for(i=0;;) {
 724 bc7cb1a1 2003-11-23 devnull 		if(read(0, s+i, 1) <= 0)
 725 bc7cb1a1 2003-11-23 devnull 			return lastc = EOF;
 726 bc7cb1a1 2003-11-23 devnull 		i++;
 727 bc7cb1a1 2003-11-23 devnull 		if(fullrune(s, i))
 728 bc7cb1a1 2003-11-23 devnull 			break;
 729 bc7cb1a1 2003-11-23 devnull 		
 730 bc7cb1a1 2003-11-23 devnull 	}
 731 bc7cb1a1 2003-11-23 devnull 	chartorune(&r, s);
 732 bc7cb1a1 2003-11-23 devnull 	lastc = r;
 733 bc7cb1a1 2003-11-23 devnull 	return lastc;
 734 bc7cb1a1 2003-11-23 devnull }
 735 bc7cb1a1 2003-11-23 devnull 
 736 bc7cb1a1 2003-11-23 devnull int
 737 bc7cb1a1 2003-11-23 devnull gety(void)
 738 bc7cb1a1 2003-11-23 devnull {
 739 bc7cb1a1 2003-11-23 devnull 	int c;
 740 bc7cb1a1 2003-11-23 devnull 	Rune *gf, *p;
 741 bc7cb1a1 2003-11-23 devnull 
 742 bc7cb1a1 2003-11-23 devnull 	p = linebuf;
 743 bc7cb1a1 2003-11-23 devnull 	gf = globp;
 744 bc7cb1a1 2003-11-23 devnull 	for(;;) {
 745 bc7cb1a1 2003-11-23 devnull 		c = getchr();
 746 bc7cb1a1 2003-11-23 devnull 		if(c == '\n') {
 747 bc7cb1a1 2003-11-23 devnull 			*p = 0;
 748 bc7cb1a1 2003-11-23 devnull 			return 0;
 749 bc7cb1a1 2003-11-23 devnull 		}
 750 bc7cb1a1 2003-11-23 devnull 		if(c == EOF) {
 751 bc7cb1a1 2003-11-23 devnull 			if(gf)
 752 bc7cb1a1 2003-11-23 devnull 				peekc = c;
 753 bc7cb1a1 2003-11-23 devnull 			return c;
 754 bc7cb1a1 2003-11-23 devnull 		}
 755 bc7cb1a1 2003-11-23 devnull 		if(c == 0)
 756 bc7cb1a1 2003-11-23 devnull 			continue;
 757 bc7cb1a1 2003-11-23 devnull 		*p++ = c;
 758 bc7cb1a1 2003-11-23 devnull 		if(p >= &linebuf[LBSIZE-2])
 759 bc7cb1a1 2003-11-23 devnull 			error(Q);
 760 bc7cb1a1 2003-11-23 devnull 	}
 761 bc7cb1a1 2003-11-23 devnull }
 762 bc7cb1a1 2003-11-23 devnull 
 763 bc7cb1a1 2003-11-23 devnull int
 764 bc7cb1a1 2003-11-23 devnull gettty(void)
 765 bc7cb1a1 2003-11-23 devnull {
 766 bc7cb1a1 2003-11-23 devnull 	int rc;
 767 bc7cb1a1 2003-11-23 devnull 
 768 bc7cb1a1 2003-11-23 devnull 	rc = gety();
 769 bc7cb1a1 2003-11-23 devnull 	if(rc)
 770 bc7cb1a1 2003-11-23 devnull 		return rc;
 771 bc7cb1a1 2003-11-23 devnull 	if(linebuf[0] == '.' && linebuf[1] == 0)
 772 bc7cb1a1 2003-11-23 devnull 		return EOF;
 773 bc7cb1a1 2003-11-23 devnull 	return 0;
 774 bc7cb1a1 2003-11-23 devnull }
 775 bc7cb1a1 2003-11-23 devnull 
 776 bc7cb1a1 2003-11-23 devnull int
 777 bc7cb1a1 2003-11-23 devnull getfile(void)
 778 bc7cb1a1 2003-11-23 devnull {
 779 bc7cb1a1 2003-11-23 devnull 	int c;
 780 bc7cb1a1 2003-11-23 devnull 	Rune *lp;
 781 bc7cb1a1 2003-11-23 devnull 
 782 bc7cb1a1 2003-11-23 devnull 	lp = linebuf;
 783 bc7cb1a1 2003-11-23 devnull 	do {
 784 bc7cb1a1 2003-11-23 devnull 		c = Bgetrune(&iobuf);
 785 bc7cb1a1 2003-11-23 devnull 		if(c < 0) {
 786 bc7cb1a1 2003-11-23 devnull 			if(lp > linebuf) {
 787 bc7cb1a1 2003-11-23 devnull 				putst("'\\n' appended");
 788 bc7cb1a1 2003-11-23 devnull 				c = '\n';
 789 bc7cb1a1 2003-11-23 devnull 			} else
 790 bc7cb1a1 2003-11-23 devnull 				return EOF;
 791 bc7cb1a1 2003-11-23 devnull 		}
 792 bc7cb1a1 2003-11-23 devnull 		if(lp >= &linebuf[LBSIZE]) {
 793 bc7cb1a1 2003-11-23 devnull 			lastc = '\n';
 794 bc7cb1a1 2003-11-23 devnull 			error(Q);
 795 bc7cb1a1 2003-11-23 devnull 		}
 796 bc7cb1a1 2003-11-23 devnull 		*lp++ = c;
 797 bc7cb1a1 2003-11-23 devnull 		count++;
 798 bc7cb1a1 2003-11-23 devnull 	} while(c != '\n');
 799 bc7cb1a1 2003-11-23 devnull 	lp[-1] = 0;
 800 bc7cb1a1 2003-11-23 devnull 	return 0;
 801 bc7cb1a1 2003-11-23 devnull }
 802 bc7cb1a1 2003-11-23 devnull 
 803 bc7cb1a1 2003-11-23 devnull void
 804 bc7cb1a1 2003-11-23 devnull putfile(void)
 805 bc7cb1a1 2003-11-23 devnull {
 806 bc7cb1a1 2003-11-23 devnull 	int *a1;
 807 bc7cb1a1 2003-11-23 devnull 	Rune *lp;
 808 bc7cb1a1 2003-11-23 devnull 	long c;
 809 bc7cb1a1 2003-11-23 devnull 
 810 bc7cb1a1 2003-11-23 devnull 	a1 = addr1;
 811 bc7cb1a1 2003-11-23 devnull 	do {
 812 bc7cb1a1 2003-11-23 devnull 		lp = getline(*a1++);
 813 bc7cb1a1 2003-11-23 devnull 		for(;;) {
 814 bc7cb1a1 2003-11-23 devnull 			count++;
 815 bc7cb1a1 2003-11-23 devnull 			c = *lp++;
 816 bc7cb1a1 2003-11-23 devnull 			if(c == 0) {
 817 bc7cb1a1 2003-11-23 devnull 				if(Bputrune(&iobuf, '\n') < 0)
 818 bc7cb1a1 2003-11-23 devnull 					error(Q);
 819 bc7cb1a1 2003-11-23 devnull 				break;
 820 bc7cb1a1 2003-11-23 devnull 			}
 821 bc7cb1a1 2003-11-23 devnull 			if(Bputrune(&iobuf, c) < 0)
 822 bc7cb1a1 2003-11-23 devnull 				error(Q);
 823 bc7cb1a1 2003-11-23 devnull 		}
 824 bc7cb1a1 2003-11-23 devnull 	} while(a1 <= addr2);
 825 bc7cb1a1 2003-11-23 devnull 	if(Bflush(&iobuf) < 0)
 826 bc7cb1a1 2003-11-23 devnull 		error(Q);
 827 bc7cb1a1 2003-11-23 devnull }
 828 bc7cb1a1 2003-11-23 devnull 
 829 bc7cb1a1 2003-11-23 devnull int
 830 bc7cb1a1 2003-11-23 devnull append(int (*f)(void), int *a)
 831 bc7cb1a1 2003-11-23 devnull {
 832 c51c2905 2010-01-12 rsc 	int *a1, *a2, *rdot, nline, d;
 833 bc7cb1a1 2003-11-23 devnull 
 834 bc7cb1a1 2003-11-23 devnull 	nline = 0;
 835 bc7cb1a1 2003-11-23 devnull 	dot = a;
 836 bc7cb1a1 2003-11-23 devnull 	while((*f)() == 0) {
 837 bc7cb1a1 2003-11-23 devnull 		if((dol-zero) >= nlall) {
 838 bc7cb1a1 2003-11-23 devnull 			nlall += 512;
 839 c51c2905 2010-01-12 rsc 			a1 = realloc(zero, (nlall+50)*sizeof(int*));
 840 bc7cb1a1 2003-11-23 devnull 			if(a1 == 0) {
 841 bc7cb1a1 2003-11-23 devnull 				error("MEM?");
 842 bc7cb1a1 2003-11-23 devnull 				rescue();
 843 bc7cb1a1 2003-11-23 devnull 			}
 844 c51c2905 2010-01-12 rsc 			/* relocate pointers; avoid wraparound if sizeof(int) < sizeof(int*) */
 845 c51c2905 2010-01-12 rsc 			d = addr1 - zero;
 846 c51c2905 2010-01-12 rsc 			addr1 = a1 + d;
 847 c51c2905 2010-01-12 rsc 			d = addr2 - zero;
 848 c51c2905 2010-01-12 rsc 			addr2 = a1 + d;
 849 c51c2905 2010-01-12 rsc 			d = dol - zero;
 850 c51c2905 2010-01-12 rsc 			dol = a1 + d;
 851 c51c2905 2010-01-12 rsc 			d = dot - zero;
 852 c51c2905 2010-01-12 rsc 			dot = a1 + d;
 853 c51c2905 2010-01-12 rsc 			zero = a1;
 854 bc7cb1a1 2003-11-23 devnull 		}
 855 c51c2905 2010-01-12 rsc 		d = putline();
 856 bc7cb1a1 2003-11-23 devnull 		nline++;
 857 bc7cb1a1 2003-11-23 devnull 		a1 = ++dol;
 858 bc7cb1a1 2003-11-23 devnull 		a2 = a1+1;
 859 bc7cb1a1 2003-11-23 devnull 		rdot = ++dot;
 860 bc7cb1a1 2003-11-23 devnull 		while(a1 > rdot)
 861 bc7cb1a1 2003-11-23 devnull 			*--a2 = *--a1;
 862 c51c2905 2010-01-12 rsc 		*rdot = d;
 863 bc7cb1a1 2003-11-23 devnull 	}
 864 bc7cb1a1 2003-11-23 devnull 	return nline;
 865 bc7cb1a1 2003-11-23 devnull }
 866 bc7cb1a1 2003-11-23 devnull 
 867 bc7cb1a1 2003-11-23 devnull void
 868 bc7cb1a1 2003-11-23 devnull add(int i)
 869 bc7cb1a1 2003-11-23 devnull {
 870 bc7cb1a1 2003-11-23 devnull 	if(i && (given || dol > zero)) {
 871 bc7cb1a1 2003-11-23 devnull 		addr1--;
 872 bc7cb1a1 2003-11-23 devnull 		addr2--;
 873 bc7cb1a1 2003-11-23 devnull 	}
 874 bc7cb1a1 2003-11-23 devnull 	squeeze(0);
 875 bc7cb1a1 2003-11-23 devnull 	newline();
 876 bc7cb1a1 2003-11-23 devnull 	append(gettty, addr2);
 877 bc7cb1a1 2003-11-23 devnull }
 878 bc7cb1a1 2003-11-23 devnull 
 879 bc7cb1a1 2003-11-23 devnull void
 880 bc7cb1a1 2003-11-23 devnull browse(void)
 881 bc7cb1a1 2003-11-23 devnull {
 882 bc7cb1a1 2003-11-23 devnull 	int forward, n;
 883 bc7cb1a1 2003-11-23 devnull 	static int bformat, bnum; /* 0 */
 884 bc7cb1a1 2003-11-23 devnull 
 885 bc7cb1a1 2003-11-23 devnull 	forward = 1;
 886 bc7cb1a1 2003-11-23 devnull 	peekc = getchr();
 887 bc7cb1a1 2003-11-23 devnull 	if(peekc != '\n'){
 888 bc7cb1a1 2003-11-23 devnull 		if(peekc == '-' || peekc == '+') {
 889 bc7cb1a1 2003-11-23 devnull 			if(peekc == '-')
 890 bc7cb1a1 2003-11-23 devnull 				forward = 0;
 891 bc7cb1a1 2003-11-23 devnull 			getchr();
 892 bc7cb1a1 2003-11-23 devnull 		}
 893 bc7cb1a1 2003-11-23 devnull 		n = getnum();
 894 bc7cb1a1 2003-11-23 devnull 		if(n > 0)
 895 bc7cb1a1 2003-11-23 devnull 			bpagesize = n;
 896 bc7cb1a1 2003-11-23 devnull 	}
 897 bc7cb1a1 2003-11-23 devnull 	newline();
 898 bc7cb1a1 2003-11-23 devnull 	if(pflag) {
 899 bc7cb1a1 2003-11-23 devnull 		bformat = listf;
 900 bc7cb1a1 2003-11-23 devnull 		bnum = listn;
 901 bc7cb1a1 2003-11-23 devnull 	} else {
 902 bc7cb1a1 2003-11-23 devnull 		listf = bformat;
 903 bc7cb1a1 2003-11-23 devnull 		listn = bnum;
 904 bc7cb1a1 2003-11-23 devnull 	}
 905 bc7cb1a1 2003-11-23 devnull 	if(forward) {
 906 bc7cb1a1 2003-11-23 devnull 		addr1 = addr2;
 907 bc7cb1a1 2003-11-23 devnull 		addr2 += bpagesize;
 908 bc7cb1a1 2003-11-23 devnull 		if(addr2 > dol)
 909 bc7cb1a1 2003-11-23 devnull 			addr2 = dol;
 910 bc7cb1a1 2003-11-23 devnull 	} else {
 911 bc7cb1a1 2003-11-23 devnull 		addr1 = addr2-bpagesize;
 912 bc7cb1a1 2003-11-23 devnull 		if(addr1 <= zero)
 913 bc7cb1a1 2003-11-23 devnull 			addr1 = zero+1;
 914 bc7cb1a1 2003-11-23 devnull 	}
 915 bc7cb1a1 2003-11-23 devnull 	printcom();
 916 bc7cb1a1 2003-11-23 devnull }
 917 bc7cb1a1 2003-11-23 devnull 
 918 bc7cb1a1 2003-11-23 devnull void
 919 bc7cb1a1 2003-11-23 devnull callunix(void)
 920 bc7cb1a1 2003-11-23 devnull {
 921 bc7cb1a1 2003-11-23 devnull 	int c, pid;
 922 bc7cb1a1 2003-11-23 devnull 	Rune rune;
 923 bc7cb1a1 2003-11-23 devnull 	char buf[512];
 924 bc7cb1a1 2003-11-23 devnull 	char *p;
 925 bc7cb1a1 2003-11-23 devnull 
 926 bc7cb1a1 2003-11-23 devnull 	setnoaddr();
 927 bc7cb1a1 2003-11-23 devnull 	p = buf;
 928 bc7cb1a1 2003-11-23 devnull 	while((c=getchr()) != EOF && c != '\n')
 929 bc7cb1a1 2003-11-23 devnull 		if(p < &buf[sizeof(buf) - 6]) {
 930 bc7cb1a1 2003-11-23 devnull 			rune = c;
 931 bc7cb1a1 2003-11-23 devnull 			p += runetochar(p, &rune);
 932 bc7cb1a1 2003-11-23 devnull 		}
 933 bc7cb1a1 2003-11-23 devnull 	*p = 0;
 934 bc7cb1a1 2003-11-23 devnull 	pid = fork();
 935 bc7cb1a1 2003-11-23 devnull 	if(pid == 0) {
 936 a8ec4910 2005-07-13 devnull 		execlp("rc", "rc", "-c", buf, (char*)0);
 937 a0f1e21f 2004-04-20 devnull 		sysfatal("exec failed: %r");
 938 bc7cb1a1 2003-11-23 devnull 		exits("execl failed");
 939 bc7cb1a1 2003-11-23 devnull 	}
 940 bc7cb1a1 2003-11-23 devnull 	waiting = 1;
 941 bc7cb1a1 2003-11-23 devnull 	while(waitpid() != pid)
 942 bc7cb1a1 2003-11-23 devnull 		;
 943 bc7cb1a1 2003-11-23 devnull 	waiting = 0;
 944 bc7cb1a1 2003-11-23 devnull 	if(vflag)
 945 bc7cb1a1 2003-11-23 devnull 		putst("!");
 946 bc7cb1a1 2003-11-23 devnull }
 947 bc7cb1a1 2003-11-23 devnull 
 948 bc7cb1a1 2003-11-23 devnull void
 949 bc7cb1a1 2003-11-23 devnull quit(void)
 950 bc7cb1a1 2003-11-23 devnull {
 951 bc7cb1a1 2003-11-23 devnull 	if(vflag && fchange && dol!=zero) {
 952 bc7cb1a1 2003-11-23 devnull 		fchange = 0;
 953 bc7cb1a1 2003-11-23 devnull 		error(Q);
 954 bc7cb1a1 2003-11-23 devnull 	}
 955 bc7cb1a1 2003-11-23 devnull 	remove(tfname);
 956 bc7cb1a1 2003-11-23 devnull 	exits(0);
 957 bc7cb1a1 2003-11-23 devnull }
 958 bc7cb1a1 2003-11-23 devnull 
 959 bc7cb1a1 2003-11-23 devnull void
 960 bc7cb1a1 2003-11-23 devnull onquit(int sig)
 961 bc7cb1a1 2003-11-23 devnull {
 962 bc7cb1a1 2003-11-23 devnull 	USED(sig);
 963 bc7cb1a1 2003-11-23 devnull 	quit();
 964 bc7cb1a1 2003-11-23 devnull }
 965 bc7cb1a1 2003-11-23 devnull 
 966 bc7cb1a1 2003-11-23 devnull void
 967 bc7cb1a1 2003-11-23 devnull rdelete(int *ad1, int *ad2)
 968 bc7cb1a1 2003-11-23 devnull {
 969 bc7cb1a1 2003-11-23 devnull 	int *a1, *a2, *a3;
 970 bc7cb1a1 2003-11-23 devnull 
 971 bc7cb1a1 2003-11-23 devnull 	a1 = ad1;
 972 bc7cb1a1 2003-11-23 devnull 	a2 = ad2+1;
 973 bc7cb1a1 2003-11-23 devnull 	a3 = dol;
 974 bc7cb1a1 2003-11-23 devnull 	dol -= a2 - a1;
 975 bc7cb1a1 2003-11-23 devnull 	do {
 976 bc7cb1a1 2003-11-23 devnull 		*a1++ = *a2++;
 977 bc7cb1a1 2003-11-23 devnull 	} while(a2 <= a3);
 978 bc7cb1a1 2003-11-23 devnull 	a1 = ad1;
 979 bc7cb1a1 2003-11-23 devnull 	if(a1 > dol)
 980 bc7cb1a1 2003-11-23 devnull 		a1 = dol;
 981 bc7cb1a1 2003-11-23 devnull 	dot = a1;
 982 bc7cb1a1 2003-11-23 devnull 	fchange = 1;
 983 bc7cb1a1 2003-11-23 devnull }
 984 bc7cb1a1 2003-11-23 devnull 
 985 bc7cb1a1 2003-11-23 devnull void
 986 bc7cb1a1 2003-11-23 devnull gdelete(void)
 987 bc7cb1a1 2003-11-23 devnull {
 988 bc7cb1a1 2003-11-23 devnull 	int *a1, *a2, *a3;
 989 bc7cb1a1 2003-11-23 devnull 
 990 bc7cb1a1 2003-11-23 devnull 	a3 = dol;
 991 bc7cb1a1 2003-11-23 devnull 	for(a1=zero; (*a1&01)==0; a1++)
 992 bc7cb1a1 2003-11-23 devnull 		if(a1>=a3)
 993 bc7cb1a1 2003-11-23 devnull 			return;
 994 bc7cb1a1 2003-11-23 devnull 	for(a2=a1+1; a2<=a3;) {
 995 bc7cb1a1 2003-11-23 devnull 		if(*a2 & 01) {
 996 bc7cb1a1 2003-11-23 devnull 			a2++;
 997 bc7cb1a1 2003-11-23 devnull 			dot = a1;
 998 bc7cb1a1 2003-11-23 devnull 		} else
 999 bc7cb1a1 2003-11-23 devnull 			*a1++ = *a2++;
1000 bc7cb1a1 2003-11-23 devnull 	}
1001 bc7cb1a1 2003-11-23 devnull 	dol = a1-1;
1002 bc7cb1a1 2003-11-23 devnull 	if(dot > dol)
1003 bc7cb1a1 2003-11-23 devnull 		dot = dol;
1004 bc7cb1a1 2003-11-23 devnull 	fchange = 1;
1005 bc7cb1a1 2003-11-23 devnull }
1006 bc7cb1a1 2003-11-23 devnull 
1007 bc7cb1a1 2003-11-23 devnull Rune*
1008 bc7cb1a1 2003-11-23 devnull getline(int tl)
1009 bc7cb1a1 2003-11-23 devnull {
1010 bc7cb1a1 2003-11-23 devnull 	Rune *lp, *bp;
1011 bc7cb1a1 2003-11-23 devnull 	int nl;
1012 bc7cb1a1 2003-11-23 devnull 
1013 bc7cb1a1 2003-11-23 devnull 	lp = linebuf;
1014 bc7cb1a1 2003-11-23 devnull 	bp = getblock(tl, OREAD);
1015 bc7cb1a1 2003-11-23 devnull 	nl = nleft;
1016 cfa81d56 2009-09-16 russcox 	tl &= ~((BLKSIZE/sizeof(Rune)) - 1);
1017 bc7cb1a1 2003-11-23 devnull 	while(*lp++ = *bp++) {
1018 bc7cb1a1 2003-11-23 devnull 		nl -= sizeof(Rune);
1019 bc7cb1a1 2003-11-23 devnull 		if(nl == 0) {
1020 cfa81d56 2009-09-16 russcox 			bp = getblock(tl += BLKSIZE/sizeof(Rune), OREAD);
1021 bc7cb1a1 2003-11-23 devnull 			nl = nleft;
1022 bc7cb1a1 2003-11-23 devnull 		}
1023 bc7cb1a1 2003-11-23 devnull 	}
1024 bc7cb1a1 2003-11-23 devnull 	return linebuf;
1025 bc7cb1a1 2003-11-23 devnull }
1026 bc7cb1a1 2003-11-23 devnull 
1027 bc7cb1a1 2003-11-23 devnull int
1028 bc7cb1a1 2003-11-23 devnull putline(void)
1029 bc7cb1a1 2003-11-23 devnull {
1030 bc7cb1a1 2003-11-23 devnull 	Rune *lp, *bp;
1031 bc7cb1a1 2003-11-23 devnull 	int nl, tl;
1032 bc7cb1a1 2003-11-23 devnull 
1033 bc7cb1a1 2003-11-23 devnull 	fchange = 1;
1034 bc7cb1a1 2003-11-23 devnull 	lp = linebuf;
1035 bc7cb1a1 2003-11-23 devnull 	tl = tline;
1036 bc7cb1a1 2003-11-23 devnull 	bp = getblock(tl, OWRITE);
1037 bc7cb1a1 2003-11-23 devnull 	nl = nleft;
1038 cfa81d56 2009-09-16 russcox 	tl &= ~((BLKSIZE/sizeof(Rune))-1);
1039 bc7cb1a1 2003-11-23 devnull 	while(*bp = *lp++) {
1040 bc7cb1a1 2003-11-23 devnull 		if(*bp++ == '\n') {
1041 bc7cb1a1 2003-11-23 devnull 			bp[-1] = 0;
1042 bc7cb1a1 2003-11-23 devnull 			linebp = lp;
1043 bc7cb1a1 2003-11-23 devnull 			break;
1044 bc7cb1a1 2003-11-23 devnull 		}
1045 bc7cb1a1 2003-11-23 devnull 		nl -= sizeof(Rune);
1046 bc7cb1a1 2003-11-23 devnull 		if(nl == 0) {
1047 cfa81d56 2009-09-16 russcox 			tl += BLKSIZE/sizeof(Rune);
1048 bc7cb1a1 2003-11-23 devnull 			bp = getblock(tl, OWRITE);
1049 bc7cb1a1 2003-11-23 devnull 			nl = nleft;
1050 bc7cb1a1 2003-11-23 devnull 		}
1051 bc7cb1a1 2003-11-23 devnull 	}
1052 bc7cb1a1 2003-11-23 devnull 	nl = tline;
1053 bc7cb1a1 2003-11-23 devnull 	tline += ((lp-linebuf) + 03) & 077776;
1054 bc7cb1a1 2003-11-23 devnull 	return nl;
1055 bc7cb1a1 2003-11-23 devnull }
1056 bc7cb1a1 2003-11-23 devnull 
1057 bc7cb1a1 2003-11-23 devnull void
1058 bc7cb1a1 2003-11-23 devnull blkio(int b, uchar *buf, int isread)
1059 bc7cb1a1 2003-11-23 devnull {
1060 bc7cb1a1 2003-11-23 devnull 	int n;
1061 bc7cb1a1 2003-11-23 devnull 
1062 bc7cb1a1 2003-11-23 devnull 	seek(tfile, b*BLKSIZE, 0);
1063 bc7cb1a1 2003-11-23 devnull 	if(isread)
1064 bc7cb1a1 2003-11-23 devnull 		n = read(tfile, buf, BLKSIZE);
1065 bc7cb1a1 2003-11-23 devnull 	else
1066 bc7cb1a1 2003-11-23 devnull 		n = write(tfile, buf, BLKSIZE);
1067 bc7cb1a1 2003-11-23 devnull 	if(n != BLKSIZE)
1068 bc7cb1a1 2003-11-23 devnull 		error(T);
1069 bc7cb1a1 2003-11-23 devnull }
1070 bc7cb1a1 2003-11-23 devnull 
1071 bc7cb1a1 2003-11-23 devnull Rune*
1072 bc7cb1a1 2003-11-23 devnull getblock(int atl, int iof)
1073 bc7cb1a1 2003-11-23 devnull {
1074 bc7cb1a1 2003-11-23 devnull 	int bno, off;
1075 bc7cb1a1 2003-11-23 devnull 	
1076 bc7cb1a1 2003-11-23 devnull 	static uchar ibuff[BLKSIZE];
1077 bc7cb1a1 2003-11-23 devnull 	static uchar obuff[BLKSIZE];
1078 bc7cb1a1 2003-11-23 devnull 
1079 cfa81d56 2009-09-16 russcox 	bno = atl / (BLKSIZE/sizeof(Rune));
1080 cfa81d56 2009-09-16 russcox 	off = (atl*sizeof(Rune)) & (BLKSIZE-1) & ~03;
1081 bc7cb1a1 2003-11-23 devnull 	if(bno >= NBLK) {
1082 bc7cb1a1 2003-11-23 devnull 		lastc = '\n';
1083 bc7cb1a1 2003-11-23 devnull 		error(T);
1084 bc7cb1a1 2003-11-23 devnull 	}
1085 bc7cb1a1 2003-11-23 devnull 	nleft = BLKSIZE - off;
1086 bc7cb1a1 2003-11-23 devnull 	if(bno == iblock) {
1087 bc7cb1a1 2003-11-23 devnull 		ichanged |= iof;
1088 bc7cb1a1 2003-11-23 devnull 		return (Rune*)(ibuff+off);
1089 bc7cb1a1 2003-11-23 devnull 	}
1090 bc7cb1a1 2003-11-23 devnull 	if(bno == oblock)
1091 bc7cb1a1 2003-11-23 devnull 		return (Rune*)(obuff+off);
1092 bc7cb1a1 2003-11-23 devnull 	if(iof == OREAD) {
1093 bc7cb1a1 2003-11-23 devnull 		if(ichanged)
1094 bc7cb1a1 2003-11-23 devnull 			blkio(iblock, ibuff, 0);
1095 bc7cb1a1 2003-11-23 devnull 		ichanged = 0;
1096 bc7cb1a1 2003-11-23 devnull 		iblock = bno;
1097 bc7cb1a1 2003-11-23 devnull 		blkio(bno, ibuff, 1);
1098 bc7cb1a1 2003-11-23 devnull 		return (Rune*)(ibuff+off);
1099 bc7cb1a1 2003-11-23 devnull 	}
1100 bc7cb1a1 2003-11-23 devnull 	if(oblock >= 0)
1101 bc7cb1a1 2003-11-23 devnull 		blkio(oblock, obuff, 0);
1102 bc7cb1a1 2003-11-23 devnull 	oblock = bno;
1103 bc7cb1a1 2003-11-23 devnull 	return (Rune*)(obuff+off);
1104 bc7cb1a1 2003-11-23 devnull }
1105 bc7cb1a1 2003-11-23 devnull 
1106 bc7cb1a1 2003-11-23 devnull void
1107 bc7cb1a1 2003-11-23 devnull init(void)
1108 bc7cb1a1 2003-11-23 devnull {
1109 bc7cb1a1 2003-11-23 devnull 	int *markp;
1110 bc7cb1a1 2003-11-23 devnull 
1111 bc7cb1a1 2003-11-23 devnull 	close(tfile);
1112 bc7cb1a1 2003-11-23 devnull 	tline = 2;
1113 bc7cb1a1 2003-11-23 devnull 	for(markp = names; markp < &names[26]; )
1114 bc7cb1a1 2003-11-23 devnull 		*markp++ = 0;
1115 bc7cb1a1 2003-11-23 devnull 	subnewa = 0;
1116 bc7cb1a1 2003-11-23 devnull 	anymarks = 0;
1117 bc7cb1a1 2003-11-23 devnull 	iblock = -1;
1118 bc7cb1a1 2003-11-23 devnull 	oblock = -1;
1119 bc7cb1a1 2003-11-23 devnull 	ichanged = 0;
1120 bc7cb1a1 2003-11-23 devnull 	if((tfile = create(tfname, ORDWR, 0600)) < 0){
1121 bc7cb1a1 2003-11-23 devnull 		error1(T);
1122 bc7cb1a1 2003-11-23 devnull 		exits(0);
1123 bc7cb1a1 2003-11-23 devnull 	}
1124 bc7cb1a1 2003-11-23 devnull 	dot = dol = zero;
1125 bc7cb1a1 2003-11-23 devnull }
1126 bc7cb1a1 2003-11-23 devnull 
1127 bc7cb1a1 2003-11-23 devnull void
1128 bc7cb1a1 2003-11-23 devnull global(int k)
1129 bc7cb1a1 2003-11-23 devnull {
1130 bc7cb1a1 2003-11-23 devnull 	Rune *gp, globuf[GBSIZE];
1131 bc7cb1a1 2003-11-23 devnull 	int c, *a1;
1132 bc7cb1a1 2003-11-23 devnull 
1133 bc7cb1a1 2003-11-23 devnull 	if(globp)
1134 bc7cb1a1 2003-11-23 devnull 		error(Q);
1135 bc7cb1a1 2003-11-23 devnull 	setwide();
1136 bc7cb1a1 2003-11-23 devnull 	squeeze(dol > zero);
1137 bc7cb1a1 2003-11-23 devnull 	c = getchr();
1138 bc7cb1a1 2003-11-23 devnull 	if(c == '\n')
1139 bc7cb1a1 2003-11-23 devnull 		error(Q);
1140 bc7cb1a1 2003-11-23 devnull 	compile(c);
1141 bc7cb1a1 2003-11-23 devnull 	gp = globuf;
1142 bc7cb1a1 2003-11-23 devnull 	while((c=getchr()) != '\n') {
1143 bc7cb1a1 2003-11-23 devnull 		if(c == EOF)
1144 bc7cb1a1 2003-11-23 devnull 			error(Q);
1145 bc7cb1a1 2003-11-23 devnull 		if(c == '\\') {
1146 bc7cb1a1 2003-11-23 devnull 			c = getchr();
1147 bc7cb1a1 2003-11-23 devnull 			if(c != '\n')
1148 bc7cb1a1 2003-11-23 devnull 				*gp++ = '\\';
1149 bc7cb1a1 2003-11-23 devnull 		}
1150 bc7cb1a1 2003-11-23 devnull 		*gp++ = c;
1151 bc7cb1a1 2003-11-23 devnull 		if(gp >= &globuf[GBSIZE-2])
1152 bc7cb1a1 2003-11-23 devnull 			error(Q);
1153 bc7cb1a1 2003-11-23 devnull 	}
1154 bc7cb1a1 2003-11-23 devnull 	if(gp == globuf)
1155 bc7cb1a1 2003-11-23 devnull 		*gp++ = 'p';
1156 bc7cb1a1 2003-11-23 devnull 	*gp++ = '\n';
1157 bc7cb1a1 2003-11-23 devnull 	*gp = 0;
1158 bc7cb1a1 2003-11-23 devnull 	for(a1=zero; a1<=dol; a1++) {
1159 bc7cb1a1 2003-11-23 devnull 		*a1 &= ~01;
1160 bc7cb1a1 2003-11-23 devnull 		if(a1 >= addr1 && a1 <= addr2 && match(a1) == k)
1161 bc7cb1a1 2003-11-23 devnull 			*a1 |= 01;
1162 bc7cb1a1 2003-11-23 devnull 	}
1163 bc7cb1a1 2003-11-23 devnull 
1164 bc7cb1a1 2003-11-23 devnull 	/*
1165 bc7cb1a1 2003-11-23 devnull 	 * Special case: g/.../d (avoid n^2 algorithm)
1166 bc7cb1a1 2003-11-23 devnull 	 */
1167 bc7cb1a1 2003-11-23 devnull 	if(globuf[0] == 'd' && globuf[1] == '\n' && globuf[2] == 0) {
1168 bc7cb1a1 2003-11-23 devnull 		gdelete();
1169 bc7cb1a1 2003-11-23 devnull 		return;
1170 bc7cb1a1 2003-11-23 devnull 	}
1171 bc7cb1a1 2003-11-23 devnull 	for(a1=zero; a1<=dol; a1++) {
1172 bc7cb1a1 2003-11-23 devnull 		if(*a1 & 01) {
1173 bc7cb1a1 2003-11-23 devnull 			*a1 &= ~01;
1174 bc7cb1a1 2003-11-23 devnull 			dot = a1;
1175 bc7cb1a1 2003-11-23 devnull 			globp = globuf;
1176 bc7cb1a1 2003-11-23 devnull 			commands();
1177 bc7cb1a1 2003-11-23 devnull 			a1 = zero;
1178 bc7cb1a1 2003-11-23 devnull 		}
1179 bc7cb1a1 2003-11-23 devnull 	}
1180 bc7cb1a1 2003-11-23 devnull }
1181 bc7cb1a1 2003-11-23 devnull 
1182 bc7cb1a1 2003-11-23 devnull void
1183 bc7cb1a1 2003-11-23 devnull join(void)
1184 bc7cb1a1 2003-11-23 devnull {
1185 bc7cb1a1 2003-11-23 devnull 	Rune *gp, *lp;
1186 bc7cb1a1 2003-11-23 devnull 	int *a1;
1187 bc7cb1a1 2003-11-23 devnull 
1188 bc7cb1a1 2003-11-23 devnull 	nonzero();
1189 bc7cb1a1 2003-11-23 devnull 	gp = genbuf;
1190 bc7cb1a1 2003-11-23 devnull 	for(a1=addr1; a1<=addr2; a1++) {
1191 bc7cb1a1 2003-11-23 devnull 		lp = getline(*a1);
1192 bc7cb1a1 2003-11-23 devnull 		while(*gp = *lp++)
1193 bc7cb1a1 2003-11-23 devnull 			if(gp++ >= &genbuf[LBSIZE-2])
1194 bc7cb1a1 2003-11-23 devnull 				error(Q);
1195 bc7cb1a1 2003-11-23 devnull 	}
1196 bc7cb1a1 2003-11-23 devnull 	lp = linebuf;
1197 bc7cb1a1 2003-11-23 devnull 	gp = genbuf;
1198 bc7cb1a1 2003-11-23 devnull 	while(*lp++ = *gp++)
1199 bc7cb1a1 2003-11-23 devnull 		;
1200 bc7cb1a1 2003-11-23 devnull 	*addr1 = putline();
1201 bc7cb1a1 2003-11-23 devnull 	if(addr1 < addr2)
1202 bc7cb1a1 2003-11-23 devnull 		rdelete(addr1+1, addr2);
1203 bc7cb1a1 2003-11-23 devnull 	dot = addr1;
1204 bc7cb1a1 2003-11-23 devnull }
1205 bc7cb1a1 2003-11-23 devnull 
1206 bc7cb1a1 2003-11-23 devnull void
1207 bc7cb1a1 2003-11-23 devnull substitute(int inglob)
1208 bc7cb1a1 2003-11-23 devnull {
1209 bc7cb1a1 2003-11-23 devnull 	int *mp, *a1, nl, gsubf, n;
1210 bc7cb1a1 2003-11-23 devnull 
1211 bc7cb1a1 2003-11-23 devnull 	n = getnum();	/* OK even if n==0 */
1212 bc7cb1a1 2003-11-23 devnull 	gsubf = compsub();
1213 bc7cb1a1 2003-11-23 devnull 	for(a1 = addr1; a1 <= addr2; a1++) {
1214 bc7cb1a1 2003-11-23 devnull 		if(match(a1)){
1215 bc7cb1a1 2003-11-23 devnull 			int *ozero;
1216 bc7cb1a1 2003-11-23 devnull 			int m = n;
1217 bc7cb1a1 2003-11-23 devnull 
1218 bc7cb1a1 2003-11-23 devnull 			do {
1219 bc7cb1a1 2003-11-23 devnull 				int span = loc2-loc1;
1220 bc7cb1a1 2003-11-23 devnull 
1221 bc7cb1a1 2003-11-23 devnull 				if(--m <= 0) {
1222 bc7cb1a1 2003-11-23 devnull 					dosub();
1223 bc7cb1a1 2003-11-23 devnull 					if(!gsubf)
1224 bc7cb1a1 2003-11-23 devnull 						break;
1225 bc7cb1a1 2003-11-23 devnull 					if(span == 0) {	/* null RE match */
1226 bc7cb1a1 2003-11-23 devnull 						if(*loc2 == 0)
1227 bc7cb1a1 2003-11-23 devnull 							break;
1228 bc7cb1a1 2003-11-23 devnull 						loc2++;
1229 bc7cb1a1 2003-11-23 devnull 					}
1230 bc7cb1a1 2003-11-23 devnull 				}
1231 bc7cb1a1 2003-11-23 devnull 			} while(match(0));
1232 bc7cb1a1 2003-11-23 devnull 			if(m <= 0) {
1233 bc7cb1a1 2003-11-23 devnull 				inglob |= 01;
1234 bc7cb1a1 2003-11-23 devnull 				subnewa = putline();
1235 bc7cb1a1 2003-11-23 devnull 				*a1 &= ~01;
1236 bc7cb1a1 2003-11-23 devnull 				if(anymarks) {
1237 bc7cb1a1 2003-11-23 devnull 					for(mp=names; mp<&names[26]; mp++)
1238 bc7cb1a1 2003-11-23 devnull 						if(*mp == *a1)
1239 bc7cb1a1 2003-11-23 devnull 							*mp = subnewa;
1240 bc7cb1a1 2003-11-23 devnull 				}
1241 bc7cb1a1 2003-11-23 devnull 				subolda = *a1;
1242 bc7cb1a1 2003-11-23 devnull 				*a1 = subnewa;
1243 bc7cb1a1 2003-11-23 devnull 				ozero = zero;
1244 bc7cb1a1 2003-11-23 devnull 				nl = append(getsub, a1);
1245 bc7cb1a1 2003-11-23 devnull 				addr2 += nl;
1246 bc7cb1a1 2003-11-23 devnull 				nl += zero-ozero;
1247 bc7cb1a1 2003-11-23 devnull 				a1 += nl;
1248 bc7cb1a1 2003-11-23 devnull 			}
1249 bc7cb1a1 2003-11-23 devnull 		}
1250 bc7cb1a1 2003-11-23 devnull 	}
1251 bc7cb1a1 2003-11-23 devnull 	if(inglob == 0)
1252 bc7cb1a1 2003-11-23 devnull 		error(Q);
1253 bc7cb1a1 2003-11-23 devnull }
1254 bc7cb1a1 2003-11-23 devnull 
1255 bc7cb1a1 2003-11-23 devnull int
1256 bc7cb1a1 2003-11-23 devnull compsub(void)
1257 bc7cb1a1 2003-11-23 devnull {
1258 bc7cb1a1 2003-11-23 devnull 	int seof, c;
1259 bc7cb1a1 2003-11-23 devnull 	Rune *p;
1260 bc7cb1a1 2003-11-23 devnull 
1261 bc7cb1a1 2003-11-23 devnull 	seof = getchr();
1262 bc7cb1a1 2003-11-23 devnull 	if(seof == '\n' || seof == ' ')
1263 bc7cb1a1 2003-11-23 devnull 		error(Q);
1264 bc7cb1a1 2003-11-23 devnull 	compile(seof);
1265 bc7cb1a1 2003-11-23 devnull 	p = rhsbuf;
1266 bc7cb1a1 2003-11-23 devnull 	for(;;) {
1267 bc7cb1a1 2003-11-23 devnull 		c = getchr();
1268 bc7cb1a1 2003-11-23 devnull 		if(c == '\\') {
1269 bc7cb1a1 2003-11-23 devnull 			c = getchr();
1270 bc7cb1a1 2003-11-23 devnull 			*p++ = ESCFLG;
1271 cfa81d56 2009-09-16 russcox 			if(p >= &rhsbuf[LBSIZE/sizeof(Rune)])
1272 bc7cb1a1 2003-11-23 devnull 				error(Q);
1273 bc7cb1a1 2003-11-23 devnull 		} else
1274 bc7cb1a1 2003-11-23 devnull 		if(c == '\n' && (!globp || !globp[0])) {
1275 bc7cb1a1 2003-11-23 devnull 			peekc = c;
1276 bc7cb1a1 2003-11-23 devnull 			pflag++;
1277 bc7cb1a1 2003-11-23 devnull 			break;
1278 bc7cb1a1 2003-11-23 devnull 		} else
1279 bc7cb1a1 2003-11-23 devnull 		if(c == seof)
1280 bc7cb1a1 2003-11-23 devnull 			break;
1281 bc7cb1a1 2003-11-23 devnull 		*p++ = c;
1282 cfa81d56 2009-09-16 russcox 		if(p >= &rhsbuf[LBSIZE/sizeof(Rune)])
1283 bc7cb1a1 2003-11-23 devnull 			error(Q);
1284 bc7cb1a1 2003-11-23 devnull 	}
1285 bc7cb1a1 2003-11-23 devnull 	*p = 0;
1286 bc7cb1a1 2003-11-23 devnull 	peekc = getchr();
1287 bc7cb1a1 2003-11-23 devnull 	if(peekc == 'g') {
1288 bc7cb1a1 2003-11-23 devnull 		peekc = 0;
1289 bc7cb1a1 2003-11-23 devnull 		newline();
1290 bc7cb1a1 2003-11-23 devnull 		return 1;
1291 bc7cb1a1 2003-11-23 devnull 	}
1292 bc7cb1a1 2003-11-23 devnull 	newline();
1293 bc7cb1a1 2003-11-23 devnull 	return 0;
1294 bc7cb1a1 2003-11-23 devnull }
1295 bc7cb1a1 2003-11-23 devnull 
1296 bc7cb1a1 2003-11-23 devnull int
1297 bc7cb1a1 2003-11-23 devnull getsub(void)
1298 bc7cb1a1 2003-11-23 devnull {
1299 bc7cb1a1 2003-11-23 devnull 	Rune *p1, *p2;
1300 bc7cb1a1 2003-11-23 devnull 
1301 bc7cb1a1 2003-11-23 devnull 	p1 = linebuf;
1302 bc7cb1a1 2003-11-23 devnull 	if((p2 = linebp) == 0)
1303 bc7cb1a1 2003-11-23 devnull 		return EOF;
1304 bc7cb1a1 2003-11-23 devnull 	while(*p1++ = *p2++)
1305 bc7cb1a1 2003-11-23 devnull 		;
1306 bc7cb1a1 2003-11-23 devnull 	linebp = 0;
1307 bc7cb1a1 2003-11-23 devnull 	return 0;
1308 bc7cb1a1 2003-11-23 devnull }
1309 bc7cb1a1 2003-11-23 devnull 
1310 bc7cb1a1 2003-11-23 devnull void
1311 bc7cb1a1 2003-11-23 devnull dosub(void)
1312 bc7cb1a1 2003-11-23 devnull {
1313 bc7cb1a1 2003-11-23 devnull 	Rune *lp, *sp, *rp;
1314 bc7cb1a1 2003-11-23 devnull 	int c, n;
1315 bc7cb1a1 2003-11-23 devnull 
1316 bc7cb1a1 2003-11-23 devnull 	lp = linebuf;
1317 bc7cb1a1 2003-11-23 devnull 	sp = genbuf;
1318 bc7cb1a1 2003-11-23 devnull 	rp = rhsbuf;
1319 bc7cb1a1 2003-11-23 devnull 	while(lp < loc1)
1320 bc7cb1a1 2003-11-23 devnull 		*sp++ = *lp++;
1321 bc7cb1a1 2003-11-23 devnull 	while(c = *rp++) {
1322 bc7cb1a1 2003-11-23 devnull 		if(c == '&'){
1323 bc7cb1a1 2003-11-23 devnull 			sp = place(sp, loc1, loc2);
1324 bc7cb1a1 2003-11-23 devnull 			continue;
1325 bc7cb1a1 2003-11-23 devnull 		}
1326 bc7cb1a1 2003-11-23 devnull 		if(c == ESCFLG && (c = *rp++) >= '1' && c < MAXSUB+'0') {
1327 bc7cb1a1 2003-11-23 devnull 			n = c-'0';
1328 bc7cb1a1 2003-11-23 devnull 			if(subexp[n].s.rsp && subexp[n].e.rep) {
1329 bc7cb1a1 2003-11-23 devnull 				sp = place(sp, subexp[n].s.rsp, subexp[n].e.rep);
1330 bc7cb1a1 2003-11-23 devnull 				continue;
1331 bc7cb1a1 2003-11-23 devnull 			}
1332 bc7cb1a1 2003-11-23 devnull 			error(Q);
1333 bc7cb1a1 2003-11-23 devnull 		}
1334 bc7cb1a1 2003-11-23 devnull 		*sp++ = c;
1335 bc7cb1a1 2003-11-23 devnull 		if(sp >= &genbuf[LBSIZE])
1336 bc7cb1a1 2003-11-23 devnull 			error(Q);
1337 bc7cb1a1 2003-11-23 devnull 	}
1338 bc7cb1a1 2003-11-23 devnull 	lp = loc2;
1339 bc7cb1a1 2003-11-23 devnull 	loc2 = sp - genbuf + linebuf;
1340 bc7cb1a1 2003-11-23 devnull 	while(*sp++ = *lp++)
1341 bc7cb1a1 2003-11-23 devnull 		if(sp >= &genbuf[LBSIZE])
1342 bc7cb1a1 2003-11-23 devnull 			error(Q);
1343 bc7cb1a1 2003-11-23 devnull 	lp = linebuf;
1344 bc7cb1a1 2003-11-23 devnull 	sp = genbuf;
1345 bc7cb1a1 2003-11-23 devnull 	while(*lp++ = *sp++)
1346 bc7cb1a1 2003-11-23 devnull 		;
1347 bc7cb1a1 2003-11-23 devnull }
1348 bc7cb1a1 2003-11-23 devnull 
1349 bc7cb1a1 2003-11-23 devnull Rune*
1350 bc7cb1a1 2003-11-23 devnull place(Rune *sp, Rune *l1, Rune *l2)
1351 bc7cb1a1 2003-11-23 devnull {
1352 bc7cb1a1 2003-11-23 devnull 
1353 bc7cb1a1 2003-11-23 devnull 	while(l1 < l2) {
1354 bc7cb1a1 2003-11-23 devnull 		*sp++ = *l1++;
1355 bc7cb1a1 2003-11-23 devnull 		if(sp >= &genbuf[LBSIZE])
1356 bc7cb1a1 2003-11-23 devnull 			error(Q);
1357 bc7cb1a1 2003-11-23 devnull 	}
1358 bc7cb1a1 2003-11-23 devnull 	return sp;
1359 bc7cb1a1 2003-11-23 devnull }
1360 bc7cb1a1 2003-11-23 devnull 
1361 bc7cb1a1 2003-11-23 devnull void
1362 bc7cb1a1 2003-11-23 devnull move(int cflag)
1363 bc7cb1a1 2003-11-23 devnull {
1364 bc7cb1a1 2003-11-23 devnull 	int *adt, *ad1, *ad2;
1365 bc7cb1a1 2003-11-23 devnull 
1366 bc7cb1a1 2003-11-23 devnull 	nonzero();
1367 bc7cb1a1 2003-11-23 devnull 	if((adt = address())==0)	/* address() guarantees addr is in range */
1368 bc7cb1a1 2003-11-23 devnull 		error(Q);
1369 bc7cb1a1 2003-11-23 devnull 	newline();
1370 bc7cb1a1 2003-11-23 devnull 	if(cflag) {
1371 bc7cb1a1 2003-11-23 devnull 		int *ozero, delta;
1372 bc7cb1a1 2003-11-23 devnull 		ad1 = dol;
1373 bc7cb1a1 2003-11-23 devnull 		ozero = zero;
1374 bc7cb1a1 2003-11-23 devnull 		append(getcopy, ad1++);
1375 bc7cb1a1 2003-11-23 devnull 		ad2 = dol;
1376 bc7cb1a1 2003-11-23 devnull 		delta = zero - ozero;
1377 bc7cb1a1 2003-11-23 devnull 		ad1 += delta;
1378 bc7cb1a1 2003-11-23 devnull 		adt += delta;
1379 bc7cb1a1 2003-11-23 devnull 	} else {
1380 bc7cb1a1 2003-11-23 devnull 		ad2 = addr2;
1381 bc7cb1a1 2003-11-23 devnull 		for(ad1 = addr1; ad1 <= ad2;)
1382 bc7cb1a1 2003-11-23 devnull 			*ad1++ &= ~01;
1383 bc7cb1a1 2003-11-23 devnull 		ad1 = addr1;
1384 bc7cb1a1 2003-11-23 devnull 	}
1385 bc7cb1a1 2003-11-23 devnull 	ad2++;
1386 bc7cb1a1 2003-11-23 devnull 	if(adt<ad1) {
1387 bc7cb1a1 2003-11-23 devnull 		dot = adt + (ad2-ad1);
1388 bc7cb1a1 2003-11-23 devnull 		if((++adt)==ad1)
1389 bc7cb1a1 2003-11-23 devnull 			return;
1390 bc7cb1a1 2003-11-23 devnull 		reverse(adt, ad1);
1391 bc7cb1a1 2003-11-23 devnull 		reverse(ad1, ad2);
1392 bc7cb1a1 2003-11-23 devnull 		reverse(adt, ad2);
1393 bc7cb1a1 2003-11-23 devnull 	} else
1394 bc7cb1a1 2003-11-23 devnull 	if(adt >= ad2) {
1395 bc7cb1a1 2003-11-23 devnull 		dot = adt++;
1396 bc7cb1a1 2003-11-23 devnull 		reverse(ad1, ad2);
1397 bc7cb1a1 2003-11-23 devnull 		reverse(ad2, adt);
1398 bc7cb1a1 2003-11-23 devnull 		reverse(ad1, adt);
1399 bc7cb1a1 2003-11-23 devnull 	} else
1400 bc7cb1a1 2003-11-23 devnull 		error(Q);
1401 bc7cb1a1 2003-11-23 devnull 	fchange = 1;
1402 bc7cb1a1 2003-11-23 devnull }
1403 bc7cb1a1 2003-11-23 devnull 
1404 bc7cb1a1 2003-11-23 devnull void
1405 bc7cb1a1 2003-11-23 devnull reverse(int *a1, int *a2)
1406 bc7cb1a1 2003-11-23 devnull {
1407 bc7cb1a1 2003-11-23 devnull 	int t;
1408 bc7cb1a1 2003-11-23 devnull 
1409 bc7cb1a1 2003-11-23 devnull 	for(;;) {
1410 bc7cb1a1 2003-11-23 devnull 		t = *--a2;
1411 bc7cb1a1 2003-11-23 devnull 		if(a2 <= a1)
1412 bc7cb1a1 2003-11-23 devnull 			return;
1413 bc7cb1a1 2003-11-23 devnull 		*a2 = *a1;
1414 bc7cb1a1 2003-11-23 devnull 		*a1++ = t;
1415 bc7cb1a1 2003-11-23 devnull 	}
1416 bc7cb1a1 2003-11-23 devnull }
1417 bc7cb1a1 2003-11-23 devnull 
1418 bc7cb1a1 2003-11-23 devnull int
1419 bc7cb1a1 2003-11-23 devnull getcopy(void)
1420 bc7cb1a1 2003-11-23 devnull {
1421 bc7cb1a1 2003-11-23 devnull 	if(addr1 > addr2)
1422 bc7cb1a1 2003-11-23 devnull 		return EOF;
1423 bc7cb1a1 2003-11-23 devnull 	getline(*addr1++);
1424 bc7cb1a1 2003-11-23 devnull 	return 0;
1425 bc7cb1a1 2003-11-23 devnull }
1426 bc7cb1a1 2003-11-23 devnull 
1427 bc7cb1a1 2003-11-23 devnull void
1428 bc7cb1a1 2003-11-23 devnull compile(int eof)
1429 bc7cb1a1 2003-11-23 devnull {
1430 bc7cb1a1 2003-11-23 devnull 	Rune c;
1431 bc7cb1a1 2003-11-23 devnull 	char *ep;
1432 bc7cb1a1 2003-11-23 devnull 	char expbuf[ESIZE];
1433 bc7cb1a1 2003-11-23 devnull 
1434 bc7cb1a1 2003-11-23 devnull 	if((c = getchr()) == '\n') {
1435 bc7cb1a1 2003-11-23 devnull 		peekc = c;
1436 bc7cb1a1 2003-11-23 devnull 		c = eof;
1437 bc7cb1a1 2003-11-23 devnull 	}
1438 bc7cb1a1 2003-11-23 devnull 	if(c == eof) {
1439 bc7cb1a1 2003-11-23 devnull 		if(!pattern)
1440 bc7cb1a1 2003-11-23 devnull 			error(Q);
1441 bc7cb1a1 2003-11-23 devnull 		return;
1442 bc7cb1a1 2003-11-23 devnull 	}
1443 bc7cb1a1 2003-11-23 devnull 	if(pattern) {
1444 bc7cb1a1 2003-11-23 devnull 		free(pattern);
1445 bc7cb1a1 2003-11-23 devnull 		pattern = 0;
1446 bc7cb1a1 2003-11-23 devnull 	}
1447 bc7cb1a1 2003-11-23 devnull 	ep = expbuf;
1448 bc7cb1a1 2003-11-23 devnull 	do {
1449 bc7cb1a1 2003-11-23 devnull 		if(c == '\\') {
1450 bc7cb1a1 2003-11-23 devnull 			if(ep >= expbuf+sizeof(expbuf)) {
1451 bc7cb1a1 2003-11-23 devnull 				error(Q);
1452 bc7cb1a1 2003-11-23 devnull 				return;
1453 bc7cb1a1 2003-11-23 devnull 			}
1454 bc7cb1a1 2003-11-23 devnull 			ep += runetochar(ep, &c);
1455 bc7cb1a1 2003-11-23 devnull 			if((c = getchr()) == '\n') {
1456 bc7cb1a1 2003-11-23 devnull 				error(Q);
1457 bc7cb1a1 2003-11-23 devnull 				return;
1458 bc7cb1a1 2003-11-23 devnull 			}
1459 bc7cb1a1 2003-11-23 devnull 		}
1460 bc7cb1a1 2003-11-23 devnull 		if(ep >= expbuf+sizeof(expbuf)) {
1461 bc7cb1a1 2003-11-23 devnull 			error(Q);
1462 bc7cb1a1 2003-11-23 devnull 			return;
1463 bc7cb1a1 2003-11-23 devnull 		}
1464 bc7cb1a1 2003-11-23 devnull 		ep += runetochar(ep, &c);
1465 bc7cb1a1 2003-11-23 devnull 	} while((c = getchr()) != eof && c != '\n');
1466 bc7cb1a1 2003-11-23 devnull 	if(c == '\n')
1467 bc7cb1a1 2003-11-23 devnull 		peekc = c;
1468 bc7cb1a1 2003-11-23 devnull 	*ep = 0;
1469 bc7cb1a1 2003-11-23 devnull 	pattern = regcomp(expbuf);
1470 bc7cb1a1 2003-11-23 devnull }
1471 bc7cb1a1 2003-11-23 devnull 
1472 bc7cb1a1 2003-11-23 devnull int
1473 bc7cb1a1 2003-11-23 devnull match(int *addr)
1474 bc7cb1a1 2003-11-23 devnull {
1475 bc7cb1a1 2003-11-23 devnull 	if(!pattern)
1476 bc7cb1a1 2003-11-23 devnull 		return 0;
1477 bc7cb1a1 2003-11-23 devnull 	if(addr){
1478 bc7cb1a1 2003-11-23 devnull 		if(addr == zero)
1479 bc7cb1a1 2003-11-23 devnull 			return 0;
1480 bc7cb1a1 2003-11-23 devnull 		subexp[0].s.rsp = getline(*addr);
1481 bc7cb1a1 2003-11-23 devnull 	} else
1482 bc7cb1a1 2003-11-23 devnull 		subexp[0].s.rsp = loc2;
1483 bc7cb1a1 2003-11-23 devnull 	subexp[0].e.rep = 0;
1484 bc7cb1a1 2003-11-23 devnull 	if(rregexec(pattern, linebuf, subexp, MAXSUB)) {
1485 bc7cb1a1 2003-11-23 devnull 		loc1 = subexp[0].s.rsp;
1486 bc7cb1a1 2003-11-23 devnull 		loc2 = subexp[0].e.rep;
1487 bc7cb1a1 2003-11-23 devnull 		return 1;
1488 bc7cb1a1 2003-11-23 devnull 	}
1489 bc7cb1a1 2003-11-23 devnull 	loc1 = loc2 = 0;
1490 bc7cb1a1 2003-11-23 devnull 	return 0;
1491 bc7cb1a1 2003-11-23 devnull 	
1492 bc7cb1a1 2003-11-23 devnull }
1493 bc7cb1a1 2003-11-23 devnull 
1494 bc7cb1a1 2003-11-23 devnull void
1495 bc7cb1a1 2003-11-23 devnull putd(void)
1496 bc7cb1a1 2003-11-23 devnull {
1497 bc7cb1a1 2003-11-23 devnull 	int r;
1498 bc7cb1a1 2003-11-23 devnull 
1499 bc7cb1a1 2003-11-23 devnull 	r = count%10;
1500 bc7cb1a1 2003-11-23 devnull 	count /= 10;
1501 bc7cb1a1 2003-11-23 devnull 	if(count)
1502 bc7cb1a1 2003-11-23 devnull 		putd();
1503 bb0266fe 2005-05-07 devnull 	putchr(r + '0');
1504 bc7cb1a1 2003-11-23 devnull }
1505 bc7cb1a1 2003-11-23 devnull 
1506 bc7cb1a1 2003-11-23 devnull void
1507 bc7cb1a1 2003-11-23 devnull putst(char *sp)
1508 bc7cb1a1 2003-11-23 devnull {
1509 bc7cb1a1 2003-11-23 devnull 	Rune r;
1510 bc7cb1a1 2003-11-23 devnull 
1511 bc7cb1a1 2003-11-23 devnull 	col = 0;
1512 bc7cb1a1 2003-11-23 devnull 	for(;;) {
1513 bc7cb1a1 2003-11-23 devnull 		sp += chartorune(&r, sp);
1514 bc7cb1a1 2003-11-23 devnull 		if(r == 0)
1515 bc7cb1a1 2003-11-23 devnull 			break;
1516 bc7cb1a1 2003-11-23 devnull 		putchr(r);
1517 bc7cb1a1 2003-11-23 devnull 	}
1518 bb0266fe 2005-05-07 devnull 	putchr('\n');
1519 bc7cb1a1 2003-11-23 devnull }
1520 bc7cb1a1 2003-11-23 devnull 
1521 bc7cb1a1 2003-11-23 devnull void
1522 bc7cb1a1 2003-11-23 devnull putshst(Rune *sp)
1523 bc7cb1a1 2003-11-23 devnull {
1524 bc7cb1a1 2003-11-23 devnull 	col = 0;
1525 bc7cb1a1 2003-11-23 devnull 	while(*sp)
1526 bc7cb1a1 2003-11-23 devnull 		putchr(*sp++);
1527 bb0266fe 2005-05-07 devnull 	putchr('\n');
1528 bc7cb1a1 2003-11-23 devnull }
1529 bc7cb1a1 2003-11-23 devnull 
1530 bc7cb1a1 2003-11-23 devnull void
1531 bc7cb1a1 2003-11-23 devnull putchr(int ac)
1532 bc7cb1a1 2003-11-23 devnull {
1533 bc7cb1a1 2003-11-23 devnull 	char *lp;
1534 bc7cb1a1 2003-11-23 devnull 	int c;
1535 bc7cb1a1 2003-11-23 devnull 	Rune rune;
1536 bc7cb1a1 2003-11-23 devnull 
1537 bc7cb1a1 2003-11-23 devnull 	lp = linp;
1538 bc7cb1a1 2003-11-23 devnull 	c = ac;
1539 bc7cb1a1 2003-11-23 devnull 	if(listf) {
1540 bc7cb1a1 2003-11-23 devnull 		if(c == '\n') {
1541 bc7cb1a1 2003-11-23 devnull 			if(linp != line && linp[-1] == ' ') {
1542 bc7cb1a1 2003-11-23 devnull 				*lp++ = '\\';
1543 bc7cb1a1 2003-11-23 devnull 				*lp++ = 'n';
1544 bc7cb1a1 2003-11-23 devnull 			}
1545 bc7cb1a1 2003-11-23 devnull 		} else {
1546 bc7cb1a1 2003-11-23 devnull 			if(col > (72-6-2)) {
1547 bc7cb1a1 2003-11-23 devnull 				col = 8;
1548 bc7cb1a1 2003-11-23 devnull 				*lp++ = '\\';
1549 bc7cb1a1 2003-11-23 devnull 				*lp++ = '\n';
1550 bc7cb1a1 2003-11-23 devnull 				*lp++ = '\t';
1551 bc7cb1a1 2003-11-23 devnull 			}
1552 bc7cb1a1 2003-11-23 devnull 			col++;
1553 bc7cb1a1 2003-11-23 devnull 			if(c=='\b' || c=='\t' || c=='\\') {
1554 bc7cb1a1 2003-11-23 devnull 				*lp++ = '\\';
1555 bc7cb1a1 2003-11-23 devnull 				if(c == '\b')
1556 bc7cb1a1 2003-11-23 devnull 					c = 'b';
1557 bc7cb1a1 2003-11-23 devnull 				else
1558 bc7cb1a1 2003-11-23 devnull 				if(c == '\t')
1559 bc7cb1a1 2003-11-23 devnull 					c = 't';
1560 bc7cb1a1 2003-11-23 devnull 				col++;
1561 bc7cb1a1 2003-11-23 devnull 			} else
1562 bc7cb1a1 2003-11-23 devnull 			if(c<' ' || c>='\177') {
1563 bc7cb1a1 2003-11-23 devnull 				*lp++ = '\\';
1564 bc7cb1a1 2003-11-23 devnull 				*lp++ = 'x';
1565 bc7cb1a1 2003-11-23 devnull 				*lp++ =  hex[c>>12];
1566 bc7cb1a1 2003-11-23 devnull 				*lp++ =  hex[c>>8&0xF];
1567 bc7cb1a1 2003-11-23 devnull 				*lp++ =  hex[c>>4&0xF];
1568 bc7cb1a1 2003-11-23 devnull 				c     =  hex[c&0xF];
1569 bc7cb1a1 2003-11-23 devnull 				col += 5;
1570 bc7cb1a1 2003-11-23 devnull 			}
1571 bc7cb1a1 2003-11-23 devnull 		}
1572 bc7cb1a1 2003-11-23 devnull 	}
1573 bc7cb1a1 2003-11-23 devnull 
1574 bc7cb1a1 2003-11-23 devnull 	rune = c;
1575 bc7cb1a1 2003-11-23 devnull 	lp += runetochar(lp, &rune);
1576 bc7cb1a1 2003-11-23 devnull 
1577 bc7cb1a1 2003-11-23 devnull 	if(c == '\n' || lp >= &line[sizeof(line)-5]) {
1578 bc7cb1a1 2003-11-23 devnull 		linp = line;
1579 bc7cb1a1 2003-11-23 devnull 		write(oflag? 2: 1, line, lp-line);
1580 bc7cb1a1 2003-11-23 devnull 		return;
1581 bc7cb1a1 2003-11-23 devnull 	}
1582 bc7cb1a1 2003-11-23 devnull 	linp = lp;
1583 bc7cb1a1 2003-11-23 devnull }
1584 bc7cb1a1 2003-11-23 devnull 
1585 bc7cb1a1 2003-11-23 devnull char*
1586 bc7cb1a1 2003-11-23 devnull mktemp(char *as)
1587 bc7cb1a1 2003-11-23 devnull {
1588 bc7cb1a1 2003-11-23 devnull 	char *s;
1589 bc7cb1a1 2003-11-23 devnull 	unsigned pid;
1590 bc7cb1a1 2003-11-23 devnull 	int i;
1591 bc7cb1a1 2003-11-23 devnull 
1592 bc7cb1a1 2003-11-23 devnull 	pid = getpid();
1593 bc7cb1a1 2003-11-23 devnull 	s = as;
1594 bc7cb1a1 2003-11-23 devnull 	while(*s++)
1595 bc7cb1a1 2003-11-23 devnull 		;
1596 bc7cb1a1 2003-11-23 devnull 	s--;
1597 bc7cb1a1 2003-11-23 devnull 	while(*--s == 'X') {
1598 bc7cb1a1 2003-11-23 devnull 		*s = pid % 10 + '0';
1599 bc7cb1a1 2003-11-23 devnull 		pid /= 10;
1600 bc7cb1a1 2003-11-23 devnull 	}
1601 bc7cb1a1 2003-11-23 devnull 	s++;
1602 bc7cb1a1 2003-11-23 devnull 	i = 'a';
1603 bc7cb1a1 2003-11-23 devnull 	while(access(as, 0) != -1) {
1604 bc7cb1a1 2003-11-23 devnull 		if(i == 'z')
1605 bc7cb1a1 2003-11-23 devnull 			return "/";
1606 bc7cb1a1 2003-11-23 devnull 		*s = i++;
1607 bc7cb1a1 2003-11-23 devnull 	}
1608 bc7cb1a1 2003-11-23 devnull 	return as;
1609 bc7cb1a1 2003-11-23 devnull }
1610 bc7cb1a1 2003-11-23 devnull 
1611 bc7cb1a1 2003-11-23 devnull void
1612 bc7cb1a1 2003-11-23 devnull regerror(char *s)
1613 bc7cb1a1 2003-11-23 devnull {
1614 bc7cb1a1 2003-11-23 devnull 	USED(s);
1615 bc7cb1a1 2003-11-23 devnull 	error(Q);
1616 bc7cb1a1 2003-11-23 devnull }