[unix-history] / .ref-BSD-3 / usr / src / libI77 / lread.c

#include "fio.h"
#include "fmt.h"
#include "lio.h"
#include "ctype.h"
extern char *fmtbuf;
int (*lioproc)();

#define isblnk(x) (ltab[x+1]&B)
#define issep(x) (ltab[x+1]&SX)
#define isapos(x) (ltab[x+1]&AX)
#define isexp(x) (ltab[x+1]&EX)
#define issign(x) (ltab[x+1]&SG)
#define SX 1
#define B 2
#define AX 4
#define EX 8
#define SG 16
char ltab[128+1] = {	/* offset one for EOF */
	0,
	0,0,AX,0,0,0,0,0,0,0,SX,0,0,0,0,0,
	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
	SX|B,0,AX,0,0,0,0,AX,0,0,0,SG,SX,SG,0,SX,
	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
	0,0,0,0,EX,EX,0,0,0,0,0,0,0,0,0,0,
	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
	AX,0,0,0,EX,EX,0,0,0,0,0,0,0,0,0,0,
	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};

char l_comma, l_first;
t_getc()
{	int ch;
	if(curunit->uend) return(EOF);
	if((ch=getc(cf))!=EOF) return(ch);
	if(feof(cf)) curunit->uend = 1;
	return(EOF);
}
e_rsle()
{
	int ch;
	if(curunit->uend) return(0);
	while((ch=t_getc())!='\n' && ch!=EOF);
	return(0);
}

flag lquit;
int lcount,ltype;
char *lchar;
double lx,ly;
#define ERR(x) if(n=(x)) return(n)
#define GETC(x) (x=t_getc())

l_read(number,ptr,len,type) ftnint *number,type; flex *ptr; ftnlen len;
{	int i,n,ch;
	double *yy;
	float *xx;
	for(i=0;i<*number;i++)
	{
		if(lquit) return(0);
		if(curunit->uend) err(elist->ciend, EOF, "list in")
		if(lcount == 0) {
			ltype = NULL;
			if(!l_first) l_comma = 0;
			else l_first = 0;
			for(;;)  {
				GETC(ch);
				switch(ch) {
				case EOF:
					goto loopend;
				case ' ':
				case '\n':
					continue;
				case '/':
					lquit = 1;
					goto loopend;
				case ',':
					if(l_comma) {
						lcount = 1;
						ungetc(ch, cf);
						goto loopend;
					}
					l_comma = 1;
					continue;
				default:
					ungetc(ch, cf);
					goto rddata;
				}
			}
		}
	rddata:
		switch((int)type)
		{
		case TYSHORT:
		case TYLONG:
		case TYREAL:
		case TYDREAL:
			ERR(l_R());
			break;
		case TYCOMPLEX:
		case TYDCOMPLEX:
			ERR(l_C());
			break;
		case TYLOGICAL:
			ERR(l_L());
			break;
		case TYCHAR:
			ERR(l_CHAR());
			break;
		}
	loopend:
		if(lquit) return(0);
		if(feof(cf)) err(elist->ciend,(EOF),"list in")
		else if(ferror(cf))
		{	clearerr(cf);
			err(elist->cierr,errno,"list in")
		}
		if(ltype==NULL) goto bump;
		switch((int)type)
		{
		case TYSHORT:
			ptr->flshort=lx;
			break;
		case TYLOGICAL:
		case TYLONG:
			ptr->flint=lx;
			break;
		case TYREAL:
			ptr->flreal=lx;
			break;
		case TYDREAL:
			ptr->fldouble=lx;
			break;
		case TYCOMPLEX:
			xx=(float *)ptr;
			*xx++ = lx;
			*xx = ly;
			break;
		case TYDCOMPLEX:
			yy=(double *)ptr;
			*yy++ = lx;
			*yy = ly;
			break;
		case TYCHAR:
			b_char(lchar,(char *)ptr,len);
			break;
		}
	bump:
		if(lcount>0) lcount--;
		ptr = (flex *)((char *)ptr + len);
	}
	return(0);
}
l_R()
{	double a,b,c,d;
	int i,ch,sign=0,da,db,dc;
	a=b=c=d=0;
	da=db=dc=0;
	if(lcount>0) return(0);
	ltype=NULL;
	da=rd_int(&a);
	if(da== -1) sign=da;
	if(GETC(ch)!='*')
	{	ungetc(ch,cf);
		db=1;
		b=a;
		a=1;
	}
	else
		db=rd_int(&b);
	if(GETC(ch)!='.')
	{	dc=c=0;
		ungetc(ch,cf);
	}
	else	dc=rd_int(&c);
	if(isexp(GETC(ch))) db=rd_int(&d);
	else if(issign(ch))
	{	ungetc(ch, cf);
		db = rd_int(&d);
	}
	else
	{	ungetc(ch,cf);
		d=0;
	}
	lcount=a;
	if(!db && !dc)
		return(0);
	if(db && b<0)
	{	sign=1;
		b = -b;
	}
	for(i=0;i<dc;i++) c/=10;
	b=b+c;
	for(i=0;i<d;i++) b *= 10;
	for(i=0;i< -d;i++) b /= 10;
	if(sign) b = -b;
	ltype=TYLONG;
	lx=b;
	return(0);
}
rd_int(x) double *x;
{	int ch,sign=0,i;
	double y;
	i=0;
	y=0;
	if(GETC(ch)=='-') sign = -1;
	else if(ch=='+') sign=0;
	else ungetc(ch,cf);
	while(isdigit(GETC(ch)))
	{	i++;
		y=10*y+ch-'0';
	}
	ungetc(ch,cf);
	if(sign) y = -y;
	*x = y;
	return(y!=0?i:sign);
}
l_C()
{	int ch;
	if(lcount>0) return(0);
	ltype=NULL;
	GETC(ch);
	if(ch!='(')
	{	if(fscanf(cf,"%d",&lcount)!=1)
			if(!feof(cf)) err(elist->cierr,112,"complex format")
			else err(elist->cierr,(EOF),"lread");
		if(GETC(ch)!='*')
		{	ungetc(ch,cf);
			if(!feof(cf)) err(elist->cierr,112,"no star")
			else err(elist->cierr,(EOF),"lread");
		}
		if(GETC(ch)!='(')
		{	ungetc(ch,cf);
			return(0);
		}
	}
	lcount = 1;
	ltype=TYLONG;
	fscanf(cf,"%lf",&lx);
	while(isblnk(GETC(ch)) || (ch == '\n'));
	if(ch!=',')
	{	ungetc(ch,cf);
		err(elist->cierr,112,"no comma");
	}
	while(isblnk(GETC(ch)));
	ungetc(ch,cf);
	fscanf(cf,"%lf",&ly);
	while(isblnk(GETC(ch)));
	if(ch!=')') err(elist->cierr,112,"no )");
	while(isblnk(GETC(ch)));
	if(ch != '\n') ungetc(ch,cf);
	return(0);
}
l_L()
{
	int ch;
	if(lcount>0) return(0);
	ltype=NULL;
	GETC(ch);
	if(isdigit(ch))
	{	ungetc(ch,cf);
		fscanf(cf,"%d",&lcount);
		if(GETC(ch)!='*')
			if(!feof(cf)) err(elist->cierr,112,"no star")
			else err(elist->cierr,(EOF),"lread");
	}
	else	ungetc(ch,cf);
	if(GETC(ch)=='.') GETC(ch);
	switch(ch)
	{
	case 't':
	case 'T':
		lx=1;
		break;
	case 'f':
	case 'F':
		lx=0;
		break;
	default:
		if(isblnk(ch) || issep(ch) || ch==EOF)
		{	ungetc(ch,cf);
			return(0);
		}
		else	err(elist->cierr,112,"logical");
	}
	ltype=TYLONG;
	lcount = 1;
	while(!issep(GETC(ch)) && ch!=EOF);
	ungetc(ch, cf);
	return(0);
}
#define BUFSIZE	128
l_CHAR()
{	int ch,size,i;
	char quote,*p;
	if(lcount>0) return(0);
	ltype=NULL;

	GETC(ch);
	if(isdigit(ch))
	{	ungetc(ch,cf);
		fscanf(cf,"%d",&lcount);
		if(GETC(ch)!='*') err(elist->cierr,112,"no star");
	}
	else	ungetc(ch,cf);
	if(GETC(ch)=='\'' || ch=='"') quote=ch;
	else if(isblnk(ch) || (issep(ch) && ch != '\n') || ch==EOF)
	{	ungetc(ch,cf);
		return(0);
	}
	else err(elist->cierr,112,"no quote");
	ltype=TYCHAR;
	if(lchar!=NULL) free(lchar);
	size=BUFSIZE;
	p=lchar=(char *)malloc(size);
	if(lchar==NULL) err(elist->cierr,113,"no space");
	for(i=0;;)
	{	while(GETC(ch)!=quote && ch!='\n'
			&& ch!=EOF && ++i<size) *p++ = ch;
		if(i==size)
		{
		newone:
			lchar=(char *)realloc(lchar, size += BUFSIZE);
			p=lchar+i-1;
			*p++ = ch;
		}
		else if(ch==EOF) return(EOF);
		else if(ch=='\n')
		{	if(*(p-1) != '\\') continue;
			i--;
			p--;
			if(++i<size) *p++ = ch;
			else goto newone;
		}
		else if(GETC(ch)==quote)
		{	if(++i<size) *p++ = ch;
			else goto newone;
		}
		else
		{	ungetc(ch,cf);
			*p++ = 0;
			return(0);
		}
	}
}
s_rsle(a) cilist *a;
{
	int n;
	if(!init) f_init();
	if(n=c_le(a,READ)) return(n);
	reading=1;
	external=1;
	formatted=1;
	l_first=1;
	l_comma = 1;
	lioproc = l_read;
	lquit = 0;
	lcount = 0;
	if(curunit->uwrt)
		return(nowreading(curunit));
	else	return(0);
}
c_le(a,flag) cilist *a;
{
	fmtbuf="list io";
	if(a->ciunit>=MXUNIT || a->ciunit<0)
		err(a->cierr,101,"stler");
	scale=recpos=0;
	elist=a;
	curunit = &units[a->ciunit];
	if(curunit->ufd==NULL && fk_open(flag,SEQ,FMT,a->ciunit))
		err(a->cierr,102,"lio");
	cf=curunit->ufd;
	if(!curunit->ufmt) err(a->cierr,103,"lio")
	return(0);
}
do_lio(type,number,ptr,len) ftnint *number,*type; flex *ptr; ftnlen len;
{
	return((*lioproc)(number,ptr,len,*type));
}
Commit	Line	Data
914b7558 BJ	1	#include "fio.h"
	2	#include "fmt.h"
	3	#include "lio.h"
	4	#include "ctype.h"
	5	extern char *fmtbuf;
	6	int (*lioproc)();
	7
	8	#define isblnk(x) (ltab[x+1]&B)
	9	#define issep(x) (ltab[x+1]&SX)
	10	#define isapos(x) (ltab[x+1]&AX)
	11	#define isexp(x) (ltab[x+1]&EX)
	12	#define issign(x) (ltab[x+1]&SG)
	13	#define SX 1
	14	#define B 2
	15	#define AX 4
	16	#define EX 8
	17	#define SG 16
	18	char ltab[128+1] = { /* offset one for EOF */
	19	0,
	20	0,0,AX,0,0,0,0,0,0,0,SX,0,0,0,0,0,
	21	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
	22	SX\|B,0,AX,0,0,0,0,AX,0,0,0,SG,SX,SG,0,SX,
	23	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
	24	0,0,0,0,EX,EX,0,0,0,0,0,0,0,0,0,0,
	25	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
	26	AX,0,0,0,EX,EX,0,0,0,0,0,0,0,0,0,0,
	27	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	28	};
	29
	30	char l_comma, l_first;
	31	t_getc()
	32	{ int ch;
	33	if(curunit->uend) return(EOF);
	34	if((ch=getc(cf))!=EOF) return(ch);
	35	if(feof(cf)) curunit->uend = 1;
	36	return(EOF);
	37	}
	38	e_rsle()
	39	{
	40	int ch;
	41	if(curunit->uend) return(0);
	42	while((ch=t_getc())!='\n' && ch!=EOF);
	43	return(0);
	44	}
	45
	46	flag lquit;
	47	int lcount,ltype;
	48	char *lchar;
	49	double lx,ly;
	50	#define ERR(x) if(n=(x)) return(n)
	51	#define GETC(x) (x=t_getc())
	52
	53	l_read(number,ptr,len,type) ftnint number,type; flex ptr; ftnlen len;
	54	{ int i,n,ch;
	55	double *yy;
	56	float *xx;
	57	for(i=0;i<*number;i++)
	58	{
	59	if(lquit) return(0);
	60	if(curunit->uend) err(elist->ciend, EOF, "list in")
	61	if(lcount == 0) {
	62	ltype = NULL;
	63	if(!l_first) l_comma = 0;
	64	else l_first = 0;
65	for(;;) {
66	GETC(ch);
67	switch(ch) {
68	case EOF:
69	goto loopend;
70	case ' ':
71	case '\n':
72	continue;
73	case '/':
74	lquit = 1;
75	goto loopend;
76	case ',':
77	if(l_comma) {
78	lcount = 1;
79	ungetc(ch, cf);
80	goto loopend;
81	}
82	l_comma = 1;
83	continue;
84	default:
85	ungetc(ch, cf);
86	goto rddata;
87	}
88	}
89	}
90	rddata:
91	switch((int)type)
92	{
93	case TYSHORT:
94	case TYLONG:
95	case TYREAL:
96	case TYDREAL:
97	ERR(l_R());
98	break;
99	case TYCOMPLEX:
100	case TYDCOMPLEX:
101	ERR(l_C());
102	break;
103	case TYLOGICAL:
104	ERR(l_L());
105	break;
106	case TYCHAR:
107	ERR(l_CHAR());
108	break;
109	}
110	loopend:
111	if(lquit) return(0);
112	if(feof(cf)) err(elist->ciend,(EOF),"list in")
113	else if(ferror(cf))
114	{ clearerr(cf);
115	err(elist->cierr,errno,"list in")
116	}
117	if(ltype==NULL) goto bump;
118	switch((int)type)
119	{
120	case TYSHORT:
121	ptr->flshort=lx;
122	break;
123	case TYLOGICAL:
124	case TYLONG:
125	ptr->flint=lx;
126	break;
127	case TYREAL:
128	ptr->flreal=lx;
129	break;
130	case TYDREAL:
131	ptr->fldouble=lx;
132	break;
133	case TYCOMPLEX:
134	xx=(float *)ptr;
135	*xx++ = lx;
136	*xx = ly;
137	break;
138	case TYDCOMPLEX:
139	yy=(double *)ptr;
140	*yy++ = lx;
141	*yy = ly;
142	break;
143	case TYCHAR:
144	b_char(lchar,(char *)ptr,len);
145	break;
146	}
147	bump:
148	if(lcount>0) lcount--;
149	ptr = (flex )((char )ptr + len);
150	}
151	return(0);
152	}
153	l_R()
154	{ double a,b,c,d;
155	int i,ch,sign=0,da,db,dc;
156	a=b=c=d=0;
157	da=db=dc=0;
158	if(lcount>0) return(0);
159	ltype=NULL;
160	da=rd_int(&a);
161	if(da== -1) sign=da;
162	if(GETC(ch)!='*')
163	{ ungetc(ch,cf);
164	db=1;
165	b=a;
166	a=1;
167	}
168	else
169	db=rd_int(&b);
170	if(GETC(ch)!='.')
171	{ dc=c=0;
172	ungetc(ch,cf);
173	}
174	else dc=rd_int(&c);
175	if(isexp(GETC(ch))) db=rd_int(&d);
176	else if(issign(ch))
177	{ ungetc(ch, cf);
178	db = rd_int(&d);
179	}
180	else
181	{ ungetc(ch,cf);
182	d=0;
183	}
184	lcount=a;
185	if(!db && !dc)
186	return(0);
187	if(db && b<0)
188	{ sign=1;
189	b = -b;
190	}
191	for(i=0;i<dc;i++) c/=10;
192	b=b+c;
193	for(i=0;i<d;i++) b *= 10;
194	for(i=0;i< -d;i++) b /= 10;
195	if(sign) b = -b;
196	ltype=TYLONG;
197	lx=b;
198	return(0);
199	}
200	rd_int(x) double *x;
201	{ int ch,sign=0,i;
202	double y;
203	i=0;
204	y=0;
205	if(GETC(ch)=='-') sign = -1;
206	else if(ch=='+') sign=0;
207	else ungetc(ch,cf);
208	while(isdigit(GETC(ch)))
209	{ i++;
210	y=10*y+ch-'0';
211	}
212	ungetc(ch,cf);
213	if(sign) y = -y;
214	*x = y;
215	return(y!=0?i:sign);
216	}
217	l_C()
218	{ int ch;
219	if(lcount>0) return(0);
220	ltype=NULL;
221	GETC(ch);
222	if(ch!='(')
223	{ if(fscanf(cf,"%d",&lcount)!=1)
224	if(!feof(cf)) err(elist->cierr,112,"complex format")
225	else err(elist->cierr,(EOF),"lread");
226	if(GETC(ch)!='*')
227	{ ungetc(ch,cf);
228	if(!feof(cf)) err(elist->cierr,112,"no star")
229	else err(elist->cierr,(EOF),"lread");
230	}
231	if(GETC(ch)!='(')
232	{ ungetc(ch,cf);
233	return(0);
234	}
235	}
236	lcount = 1;
237	ltype=TYLONG;
238	fscanf(cf,"%lf",&lx);
239	while(isblnk(GETC(ch)) \|\| (ch == '\n'));
240	if(ch!=',')
241	{ ungetc(ch,cf);
242	err(elist->cierr,112,"no comma");
243	}
244	while(isblnk(GETC(ch)));
245	ungetc(ch,cf);
246	fscanf(cf,"%lf",&ly);
247	while(isblnk(GETC(ch)));
248	if(ch!=')') err(elist->cierr,112,"no )");
249	while(isblnk(GETC(ch)));
250	if(ch != '\n') ungetc(ch,cf);
251	return(0);
252	}
253	l_L()
254	{
255	int ch;
256	if(lcount>0) return(0);
257	ltype=NULL;
258	GETC(ch);
259	if(isdigit(ch))
260	{ ungetc(ch,cf);
261	fscanf(cf,"%d",&lcount);
262	if(GETC(ch)!='*')
263	if(!feof(cf)) err(elist->cierr,112,"no star")
264	else err(elist->cierr,(EOF),"lread");
265	}
266	else ungetc(ch,cf);
267	if(GETC(ch)=='.') GETC(ch);
268	switch(ch)
269	{
270	case 't':
271	case 'T':
272	lx=1;
273	break;
274	case 'f':
275	case 'F':
276	lx=0;
277	break;
278	default:
279	if(isblnk(ch) \|\| issep(ch) \|\| ch==EOF)
280	{ ungetc(ch,cf);
281	return(0);
282	}
283	else err(elist->cierr,112,"logical");
284	}
285	ltype=TYLONG;
286	lcount = 1;
287	while(!issep(GETC(ch)) && ch!=EOF);
288	ungetc(ch, cf);
289	return(0);
290	}
291	#define BUFSIZE 128
292	l_CHAR()
293	{ int ch,size,i;
294	char quote,*p;
295	if(lcount>0) return(0);
296	ltype=NULL;
297
298	GETC(ch);
299	if(isdigit(ch))
300	{ ungetc(ch,cf);
301	fscanf(cf,"%d",&lcount);
302	if(GETC(ch)!='*') err(elist->cierr,112,"no star");
303	}
304	else ungetc(ch,cf);
305	if(GETC(ch)=='\'' \|\| ch=='"') quote=ch;
306	else if(isblnk(ch) \|\| (issep(ch) && ch != '\n') \|\| ch==EOF)
307	{ ungetc(ch,cf);
308	return(0);
309	}
310	else err(elist->cierr,112,"no quote");
311	ltype=TYCHAR;
312	if(lchar!=NULL) free(lchar);
313	size=BUFSIZE;
314	p=lchar=(char *)malloc(size);
315	if(lchar==NULL) err(elist->cierr,113,"no space");
316	for(i=0;;)
317	{ while(GETC(ch)!=quote && ch!='\n'
318	&& ch!=EOF && ++i<size) *p++ = ch;
319	if(i==size)
320	{
321	newone:
322	lchar=(char *)realloc(lchar, size += BUFSIZE);
323	p=lchar+i-1;
324	*p++ = ch;
325	}
326	else if(ch==EOF) return(EOF);
327	else if(ch=='\n')
328	{ if(*(p-1) != '\\') continue;
329	i--;
330	p--;
331	if(++i<size) *p++ = ch;
332	else goto newone;
333	}
334	else if(GETC(ch)==quote)
335	{ if(++i<size) *p++ = ch;
336	else goto newone;
337	}
338	else
339	{ ungetc(ch,cf);
340	*p++ = 0;
341	return(0);
342	}
343	}
344	}
345	s_rsle(a) cilist *a;
346	{
347	int n;
348	if(!init) f_init();
349	if(n=c_le(a,READ)) return(n);
350	reading=1;
351	external=1;
352	formatted=1;
353	l_first=1;
354	l_comma = 1;
355	lioproc = l_read;
356	lquit = 0;
357	lcount = 0;
358	if(curunit->uwrt)
359	return(nowreading(curunit));
360	else return(0);
361	}
362	c_le(a,flag) cilist *a;
363	{
364	fmtbuf="list io";
365	if(a->ciunit>=MXUNIT \|\| a->ciunit<0)
366	err(a->cierr,101,"stler");
367	scale=recpos=0;
368	elist=a;
369	curunit = &units[a->ciunit];
370	if(curunit->ufd==NULL && fk_open(flag,SEQ,FMT,a->ciunit))
371	err(a->cierr,102,"lio");
372	cf=curunit->ufd;
373	if(!curunit->ufmt) err(a->cierr,103,"lio")
374	return(0);
375	}
376	do_lio(type,number,ptr,len) ftnint number,type; flex *ptr; ftnlen len;
377	{
378	return((lioproc)(number,ptr,len,type));
379	}