1 5cedca1b 2004-05-15 devnull #include "e.h"
  2 5cedca1b 2004-05-15 devnull #include "y.tab.h"
  3 5cedca1b 2004-05-15 devnull #include <ctype.h>
  4 5cedca1b 2004-05-15 devnull 
  5 5cedca1b 2004-05-15 devnull #define	SSIZE	1000
  6 5cedca1b 2004-05-15 devnull char	token[SSIZE];
  7 5cedca1b 2004-05-15 devnull int	sp;
  8 5cedca1b 2004-05-15 devnull 
  9 5cedca1b 2004-05-15 devnull void	space(void);
 10 5cedca1b 2004-05-15 devnull void	dodef(tbl *);
 11 5cedca1b 2004-05-15 devnull void	define(int);
 12 5cedca1b 2004-05-15 devnull void	ifdef(void);
 13 5cedca1b 2004-05-15 devnull void	include(void);
 14 5cedca1b 2004-05-15 devnull void	delim(void);
 15 5cedca1b 2004-05-15 devnull 
 16 b237df90 2004-05-16 devnull int
 17 5cedca1b 2004-05-15 devnull yylex(void)
 18 5cedca1b 2004-05-15 devnull {
 19 5cedca1b 2004-05-15 devnull 	register int c;
 20 5cedca1b 2004-05-15 devnull 	tbl *tp;
 21 5cedca1b 2004-05-15 devnull 
 22 5cedca1b 2004-05-15 devnull   begin:
 23 5cedca1b 2004-05-15 devnull 	while ((c = input()) == ' ' || c == '\n' || c == '\t')
 24 5cedca1b 2004-05-15 devnull 		;
 25 5cedca1b 2004-05-15 devnull 	yylval = c;
 26 5cedca1b 2004-05-15 devnull 	switch (c) {
 27 5cedca1b 2004-05-15 devnull 	case EOF:
 28 5cedca1b 2004-05-15 devnull 		ERROR "unexpected end of input inside equation" WARNING;
 29 5cedca1b 2004-05-15 devnull 		return(EOF);
 30 5cedca1b 2004-05-15 devnull 	case '~':
 31 5cedca1b 2004-05-15 devnull 		return(SPACE);
 32 5cedca1b 2004-05-15 devnull 	case '^':
 33 5cedca1b 2004-05-15 devnull 		return(THIN);
 34 5cedca1b 2004-05-15 devnull 	/* case '\t':
 35 5cedca1b 2004-05-15 devnull 		return(TAB);
 36 5cedca1b 2004-05-15 devnull 	*/
 37 5cedca1b 2004-05-15 devnull 	case '{':
 38 5cedca1b 2004-05-15 devnull 		return('{');
 39 5cedca1b 2004-05-15 devnull 	case '}':
 40 5cedca1b 2004-05-15 devnull 		return('}');
 41 5cedca1b 2004-05-15 devnull 	case '"':
 42 5cedca1b 2004-05-15 devnull 		for (sp = 0; (c=input())!='"' && c != '\n'; ) {
 43 5cedca1b 2004-05-15 devnull 			if (c == '\\')
 44 5cedca1b 2004-05-15 devnull 				if ((c = input()) != '"')
 45 5cedca1b 2004-05-15 devnull 					token[sp++] = '\\';
 46 5cedca1b 2004-05-15 devnull 			token[sp++] = c;
 47 5cedca1b 2004-05-15 devnull 			if (sp >= SSIZE)
 48 5cedca1b 2004-05-15 devnull 				ERROR "quoted string %.20s... too long", token FATAL;
 49 5cedca1b 2004-05-15 devnull 		}
 50 5cedca1b 2004-05-15 devnull 		token[sp] = '\0';
 51 5cedca1b 2004-05-15 devnull 		yylval = (int) &token[0];
 52 5cedca1b 2004-05-15 devnull 		if (c == '\n')
 53 5cedca1b 2004-05-15 devnull 			ERROR "missing \" in %.20s", token WARNING;
 54 5cedca1b 2004-05-15 devnull 		return(QTEXT);
 55 5cedca1b 2004-05-15 devnull 	}
 56 5cedca1b 2004-05-15 devnull 	if (!display && c == righteq)
 57 5cedca1b 2004-05-15 devnull 		return(EOF);
 58 5cedca1b 2004-05-15 devnull 
 59 5cedca1b 2004-05-15 devnull 	unput(c);
 60 5cedca1b 2004-05-15 devnull 	getstr(token, SSIZE);
 61 5cedca1b 2004-05-15 devnull 	dprintf(".\tlex token = |%s|\n", token);
 62 5cedca1b 2004-05-15 devnull 	if ((tp = lookup(deftbl, token)) != NULL) {	/* defined term */
 63 5cedca1b 2004-05-15 devnull 		c = input();
 64 5cedca1b 2004-05-15 devnull 		unput(c);
 65 5cedca1b 2004-05-15 devnull 		if (c == '(')	/* macro with args */
 66 5cedca1b 2004-05-15 devnull 			dodef(tp);
 67 5cedca1b 2004-05-15 devnull 		else {		/* no args */
 68 5cedca1b 2004-05-15 devnull 			unput(' ');
 69 5cedca1b 2004-05-15 devnull 			pbstr(tp->cval);
 70 5cedca1b 2004-05-15 devnull 			dprintf(".\tfound %s|=%s|\n", token, tp->cval);
 71 5cedca1b 2004-05-15 devnull 		}
 72 5cedca1b 2004-05-15 devnull 		goto begin;
 73 5cedca1b 2004-05-15 devnull 	}
 74 5cedca1b 2004-05-15 devnull 
 75 5cedca1b 2004-05-15 devnull 	if ((tp = lookup(keytbl, token)) == NULL)	/* not a keyword */
 76 5cedca1b 2004-05-15 devnull 		return CONTIG;
 77 5cedca1b 2004-05-15 devnull 
 78 5cedca1b 2004-05-15 devnull 	switch (tp->ival) {		/* some kind of keyword */
 79 5cedca1b 2004-05-15 devnull 	case DEFINE: case TDEFINE: case NDEFINE:
 80 5cedca1b 2004-05-15 devnull 		define(tp->ival);
 81 5cedca1b 2004-05-15 devnull 		break;
 82 5cedca1b 2004-05-15 devnull 	case IFDEF:
 83 5cedca1b 2004-05-15 devnull 		ifdef();
 84 5cedca1b 2004-05-15 devnull 		break;
 85 5cedca1b 2004-05-15 devnull 	case DELIM:
 86 5cedca1b 2004-05-15 devnull 		delim();
 87 5cedca1b 2004-05-15 devnull 		break;
 88 5cedca1b 2004-05-15 devnull 	case GSIZE:
 89 5cedca1b 2004-05-15 devnull 		globsize();
 90 5cedca1b 2004-05-15 devnull 		break;
 91 5cedca1b 2004-05-15 devnull 	case GFONT:
 92 5cedca1b 2004-05-15 devnull 		globfont();
 93 5cedca1b 2004-05-15 devnull 		break;
 94 5cedca1b 2004-05-15 devnull 	case INCLUDE:
 95 5cedca1b 2004-05-15 devnull 		include();
 96 5cedca1b 2004-05-15 devnull 		break;
 97 5cedca1b 2004-05-15 devnull 	case SPACE:
 98 5cedca1b 2004-05-15 devnull 		space();
 99 5cedca1b 2004-05-15 devnull 		break;
100 5cedca1b 2004-05-15 devnull 	case DOTEQ:
101 5cedca1b 2004-05-15 devnull 			/* .EQ inside equation -- should warn if at bottom level */
102 5cedca1b 2004-05-15 devnull 		break;
103 5cedca1b 2004-05-15 devnull 	case DOTEN:
104 5cedca1b 2004-05-15 devnull 		if (curfile == infile)
105 5cedca1b 2004-05-15 devnull 			return EOF;
106 5cedca1b 2004-05-15 devnull 		/* else ignore nested .EN */
107 5cedca1b 2004-05-15 devnull 		break;
108 5cedca1b 2004-05-15 devnull 	default:
109 5cedca1b 2004-05-15 devnull 		return tp->ival;
110 5cedca1b 2004-05-15 devnull 	}
111 5cedca1b 2004-05-15 devnull 	goto begin;
112 5cedca1b 2004-05-15 devnull }
113 5cedca1b 2004-05-15 devnull 
114 5cedca1b 2004-05-15 devnull void getstr(char *s, int n)
115 5cedca1b 2004-05-15 devnull {
116 5cedca1b 2004-05-15 devnull 	register int c;
117 5cedca1b 2004-05-15 devnull 	register char *p;
118 5cedca1b 2004-05-15 devnull 
119 5cedca1b 2004-05-15 devnull 	p = s;
120 5cedca1b 2004-05-15 devnull 	while ((c = input()) == ' ' || c == '\n')
121 5cedca1b 2004-05-15 devnull 		;
122 5cedca1b 2004-05-15 devnull 	if (c == EOF) {
123 5cedca1b 2004-05-15 devnull 		*s = 0;
124 5cedca1b 2004-05-15 devnull 		return;
125 5cedca1b 2004-05-15 devnull 	}
126 5cedca1b 2004-05-15 devnull 	while (c != ' ' && c != '\t' && c != '\n' && c != '{' && c != '}'
127 5cedca1b 2004-05-15 devnull 	    && c != '"' && c != '~' && c != '^') {
128 5cedca1b 2004-05-15 devnull 		if (!display && c == righteq)
129 5cedca1b 2004-05-15 devnull 			break;
130 5cedca1b 2004-05-15 devnull 		if (c == '(' && p > s) {	/* might be defined(...) */
131 5cedca1b 2004-05-15 devnull 			*p = '\0';
132 5cedca1b 2004-05-15 devnull 			if (lookup(deftbl, s) != NULL)
133 5cedca1b 2004-05-15 devnull 				break;
134 5cedca1b 2004-05-15 devnull 		}
135 5cedca1b 2004-05-15 devnull 		if (c == '\\')
136 5cedca1b 2004-05-15 devnull 			if ((c = input()) != '"')
137 5cedca1b 2004-05-15 devnull 				*p++ = '\\';
138 5cedca1b 2004-05-15 devnull 		*p++ = c;
139 5cedca1b 2004-05-15 devnull 		if (--n <= 0)
140 5cedca1b 2004-05-15 devnull 			ERROR "token %.20s... too long", s FATAL;
141 5cedca1b 2004-05-15 devnull 		c = input();
142 5cedca1b 2004-05-15 devnull 	}
143 5cedca1b 2004-05-15 devnull 	unput(c);
144 5cedca1b 2004-05-15 devnull 	*p = '\0';
145 5cedca1b 2004-05-15 devnull 	yylval = (int) s;
146 5cedca1b 2004-05-15 devnull }
147 5cedca1b 2004-05-15 devnull 
148 b237df90 2004-05-16 devnull int
149 5cedca1b 2004-05-15 devnull cstr(char *s, int quote, int maxs)
150 5cedca1b 2004-05-15 devnull {
151 5cedca1b 2004-05-15 devnull 	int del, c, i;
152 5cedca1b 2004-05-15 devnull 
153 5cedca1b 2004-05-15 devnull 	s[0] = 0;
154 5cedca1b 2004-05-15 devnull 	while ((del=input()) == ' ' || del == '\t')
155 5cedca1b 2004-05-15 devnull 		;
156 5cedca1b 2004-05-15 devnull 	if (quote)
157 5cedca1b 2004-05-15 devnull 		for (i=0; (c=input()) != del && c != EOF;) {
158 5cedca1b 2004-05-15 devnull 			s[i++] = c;
159 5cedca1b 2004-05-15 devnull 			if (i >= maxs)
160 5cedca1b 2004-05-15 devnull 				return(1);	/* disaster */
161 5cedca1b 2004-05-15 devnull 		}
162 5cedca1b 2004-05-15 devnull 	else {
163 5cedca1b 2004-05-15 devnull 		if (del == '\n')
164 5cedca1b 2004-05-15 devnull 			return(1);
165 5cedca1b 2004-05-15 devnull 		s[0] = del;
166 5cedca1b 2004-05-15 devnull 		for (i=1; (c=input())!=' ' && c!= '\t' && c!='\n' && c!=EOF;) {
167 5cedca1b 2004-05-15 devnull 			s[i++] = c;
168 5cedca1b 2004-05-15 devnull 			if (i >= maxs)
169 5cedca1b 2004-05-15 devnull 				return(1);	/* disaster */
170 5cedca1b 2004-05-15 devnull 		}
171 5cedca1b 2004-05-15 devnull 	}
172 5cedca1b 2004-05-15 devnull 	s[i] = '\0';
173 5cedca1b 2004-05-15 devnull 	if (c == EOF)
174 5cedca1b 2004-05-15 devnull 		ERROR "Unexpected end of input at %.20s", s FATAL;
175 5cedca1b 2004-05-15 devnull 	return(0);
176 5cedca1b 2004-05-15 devnull }
177 5cedca1b 2004-05-15 devnull 
178 5cedca1b 2004-05-15 devnull void define(int type)
179 5cedca1b 2004-05-15 devnull {
180 5cedca1b 2004-05-15 devnull 	char *p1, *p2;
181 5cedca1b 2004-05-15 devnull 	extern int ftune(char *, char *);
182 5cedca1b 2004-05-15 devnull 
183 5cedca1b 2004-05-15 devnull 	getstr(token, SSIZE);	/* get name */
184 5cedca1b 2004-05-15 devnull 	if (type != DEFINE) {
185 5cedca1b 2004-05-15 devnull 		cstr(token, 1, SSIZE);	/* skip the definition too */
186 5cedca1b 2004-05-15 devnull 		return;
187 5cedca1b 2004-05-15 devnull 	}
188 5cedca1b 2004-05-15 devnull 	p1 = strsave(token);
189 5cedca1b 2004-05-15 devnull 	if (cstr(token, 1, SSIZE))
190 5cedca1b 2004-05-15 devnull 		ERROR "Unterminated definition at %.20s", token FATAL;
191 5cedca1b 2004-05-15 devnull 	if (lookup(ftunetbl, p1) != NULL) {	/* double tuning param */
192 5cedca1b 2004-05-15 devnull 		dprintf(".\ttune %s %s\n", p1, token);
193 5cedca1b 2004-05-15 devnull 		ftune(p1, token);
194 5cedca1b 2004-05-15 devnull 	} else {
195 5cedca1b 2004-05-15 devnull 		p2 = strsave(token);
196 5cedca1b 2004-05-15 devnull 		install(deftbl, p1, p2, 0);
197 5cedca1b 2004-05-15 devnull 		dprintf(".\tname %s defined as %s\n", p1, p2);
198 5cedca1b 2004-05-15 devnull 	}
199 5cedca1b 2004-05-15 devnull }
200 5cedca1b 2004-05-15 devnull 
201 5cedca1b 2004-05-15 devnull void ifdef(void)		/* do body if name is defined */
202 5cedca1b 2004-05-15 devnull {
203 5cedca1b 2004-05-15 devnull 	char name[100], *p;
204 5cedca1b 2004-05-15 devnull 
205 5cedca1b 2004-05-15 devnull 	getstr(name, sizeof(name));	/* get name */
206 5cedca1b 2004-05-15 devnull 	cstr(token, 1, SSIZE);		/* and body */
207 5cedca1b 2004-05-15 devnull 	if (lookup(deftbl, name) != NULL) {	/* found it */
208 5cedca1b 2004-05-15 devnull 		p = strsave(token);
209 5cedca1b 2004-05-15 devnull 		pushsrc(Free, p);
210 5cedca1b 2004-05-15 devnull 		pushsrc(String, p);
211 5cedca1b 2004-05-15 devnull 	}
212 5cedca1b 2004-05-15 devnull }
213 5cedca1b 2004-05-15 devnull 
214 5cedca1b 2004-05-15 devnull char	*spaceval	= NULL;
215 5cedca1b 2004-05-15 devnull 
216 5cedca1b 2004-05-15 devnull void space(void)	/* collect line of form "space amt" to replace \x in output */
217 5cedca1b 2004-05-15 devnull {
218 5cedca1b 2004-05-15 devnull 	getstr(token, SSIZE);
219 5cedca1b 2004-05-15 devnull 	spaceval = strsave(token);
220 5cedca1b 2004-05-15 devnull 	dprintf(".\tsetting spaceval to %s\n", token);
221 5cedca1b 2004-05-15 devnull }
222 5cedca1b 2004-05-15 devnull 
223 5cedca1b 2004-05-15 devnull char *strsave(char *s)
224 5cedca1b 2004-05-15 devnull {
225 5cedca1b 2004-05-15 devnull 	register char *q;
226 5cedca1b 2004-05-15 devnull 
227 5cedca1b 2004-05-15 devnull 	q = malloc(strlen(s)+1);
228 5cedca1b 2004-05-15 devnull 	if (q == NULL)
229 5cedca1b 2004-05-15 devnull 		ERROR "out of space in strsave on %s", s FATAL;
230 5cedca1b 2004-05-15 devnull 	strcpy(q, s);
231 5cedca1b 2004-05-15 devnull 	return(q);
232 5cedca1b 2004-05-15 devnull }
233 5cedca1b 2004-05-15 devnull 
234 5cedca1b 2004-05-15 devnull void include(void)
235 5cedca1b 2004-05-15 devnull {
236 5cedca1b 2004-05-15 devnull 	char name[100];
237 5cedca1b 2004-05-15 devnull 	FILE *fin;
238 5cedca1b 2004-05-15 devnull 	int c;
239 5cedca1b 2004-05-15 devnull 	extern int errno;
240 5cedca1b 2004-05-15 devnull 
241 5cedca1b 2004-05-15 devnull 	while ((c = input()) == ' ')
242 5cedca1b 2004-05-15 devnull 		;
243 5cedca1b 2004-05-15 devnull 	unput(c);
244 5cedca1b 2004-05-15 devnull 	cstr(name, c == '"', sizeof(name));	/* gets it quoted or not */
245 5cedca1b 2004-05-15 devnull 	if ((fin = fopen(name, "r")) == NULL)
246 5cedca1b 2004-05-15 devnull 		ERROR "can't open file %s", name FATAL;
247 5cedca1b 2004-05-15 devnull 	errno = 0;
248 5cedca1b 2004-05-15 devnull 	curfile++;
249 5cedca1b 2004-05-15 devnull 	curfile->fin = fin;
250 5cedca1b 2004-05-15 devnull 	curfile->fname = strsave(name);
251 5cedca1b 2004-05-15 devnull 	curfile->lineno = 0;
252 5cedca1b 2004-05-15 devnull 	printf(".lf 1 %s\n", curfile->fname);
253 5cedca1b 2004-05-15 devnull 	pushsrc(File, curfile->fname);
254 5cedca1b 2004-05-15 devnull }
255 5cedca1b 2004-05-15 devnull 
256 5cedca1b 2004-05-15 devnull void delim(void)
257 5cedca1b 2004-05-15 devnull {
258 5cedca1b 2004-05-15 devnull 	yyval = eqnreg = 0;
259 5cedca1b 2004-05-15 devnull 	if (cstr(token, 0, SSIZE))
260 5cedca1b 2004-05-15 devnull 		ERROR "Bizarre delimiters" FATAL;
261 5cedca1b 2004-05-15 devnull 	lefteq = token[0];
262 5cedca1b 2004-05-15 devnull 	righteq = token[1];
263 5cedca1b 2004-05-15 devnull         if (!isprint(lefteq) || !isprint(righteq))
264 5cedca1b 2004-05-15 devnull 		ERROR "Bizarre delimiters" FATAL;
265 5cedca1b 2004-05-15 devnull 	if (lefteq == 'o' && righteq == 'f')
266 5cedca1b 2004-05-15 devnull 		lefteq = righteq = '\0';
267 5cedca1b 2004-05-15 devnull }