src/common/loadvars.c

#ifndef lint
static const char       RCSid[] = "$Id: loadvars.c,v 2.14 2003/07/30 10:11:06 schorsch Exp $";
#endif
/*
 *  Routines for loading and checking variables from file.
 */

#include "copyright.h"

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

#include "standard.h"
#include "vars.h"

#define NOCHAR  127             /* constant for character to delete */

extern char  *fgetline();


void
loadvars(                       /* load variables into vv from file */
        char    *rfname
)
{
        FILE    *fp;
        char    buf[512];
        char    *cp;

        if (rfname == NULL)
                fp = stdin;
        else if ((fp = fopen(rfname, "r")) == NULL) {
                perror(rfname);
                quit(1);
        }
        while (fgetline(buf, sizeof(buf), fp) != NULL) {
                for (cp = buf; *cp; cp++) {
                        switch (*cp) {
                        case '\\':
                                *cp++ = NOCHAR;
                                continue;
                        case '#':
                                *cp = '\0';
                                break;
                        default:
                                continue;
                        }
                        break;
                }
                if (setvariable(buf, matchvar) < 0) {
                        fprintf(stderr, "%s: unknown variable: %s\n",
                                        rfname, buf);
                        quit(1);
                }
        }
        fclose(fp);
}


int
setvariable(                    /* assign variable according to string */
        char    *ass,
        VARIABLE        *(*mv)(char*)
)
{
        char    varname[32];
        int     n;
        char    *cp;
        VARIABLE        *vp;
        int     i;

        while (isspace(*ass))           /* skip leading space */
                ass++;
        cp = varname;                   /* extract name */
        while (cp < varname+sizeof(varname)-1
                        && *ass && !isspace(*ass) && *ass != '=')
                *cp++ = *ass++;
        *cp = '\0';
        if (!varname[0])
                return(0);      /* no variable name! */
                                        /* trim value */
        while (isspace(*ass) || *ass == '=')
                ass++;
        for (n = strlen(ass); n > 0; n--)
                if (!isspace(ass[n-1]))
                        break;
        if (!n)
                return(0);      /* no assignment */
                                        /* match variable from list */
        vp = (*mv)(varname);
        if (vp == NULL)
                return(-1);
                                        /* assign new value */
        if ( (i = vp->nass) ) {
                cp = vp->value;
                while (i--)
                        while (*cp++)
                                ;
                i = cp - vp->value;
                vp->value = (char *)realloc((void *)vp->value, i+n+1);
        } else
                vp->value = (char *)malloc(n+1);
        if (vp->value == NULL) {
                perror(progname);
                quit(1);
        }
        cp = vp->value+i;               /* copy value, squeezing spaces */
        *cp = *ass;
        for (i = 1; i <= n; i++) {
                if (ass[i] == NOCHAR)
                        continue;
                if (isspace(*cp))
                        while (isspace(ass[i]))
                                i++;
                *++cp = ass[i];
        }
        if (isspace(*cp))               /* remove trailing space */
                *cp = '\0';
        return(++vp->nass);
}


VARIABLE *
matchvar(                       /* match a variable by its name */
        char    *nam
)
{
        int     n = strlen(nam);
        int     i;

        for (i = 0; i < NVARS; i++)
                if (n >= vv[i].nick && !strncmp(nam, vv[i].name, n))
                        return(vv+i);
        return(NULL);
}


char *
nvalue(                         /* return nth variable value */
        int     vn,
        int     n
)
{
        char    *cp;

        if ((vval(vn) == NULL) | (n < 0) | (n >= vdef(vn)))
                return(NULL);
        cp = vval(vn);
        while (n--)
                while (*cp++)
                        ;
        return(cp);
}


void
checkvalues(void)               /* check assignments */
{
        int     i;

        for (i = 0; i < NVARS; i++)
                if (vv[i].fixval != NULL)
                        (*vv[i].fixval)(vv+i);
}


void
onevalue(                       /* only one assignment for this variable */
        VARIABLE        *vp
)
{
        if (vp->nass < 2)
                return;
        if (!nowarn)
                fprintf(stderr,
                "%s: warning - multiple assignment of variable '%s'\n",
                        progname, vp->name);
        do
                vp->value += strlen(vp->value)+1;
        while (--vp->nass > 1);
}


void
catvalues(                      /* concatenate variable values */
        VARIABLE        *vp
)
{
        char    *cp;

        if (vp->nass < 2)
                return;
        for (cp = vp->value; vp->nass > 1; vp->nass--) {
                while (*cp)
                        cp++;
                *cp++ = ' ';
        }
}


int
badmatch(                       /* case insensitive truncated comparison */
        char    *tv,
        char    *cv
)
{
        if (!*tv) return(1);            /* null string cannot match */
        do
                if (UPPER(*tv) != *cv++)
                        return(1);
        while (*++tv);
        return(0);              /* OK */
}


void
boolvalue(                      /* check boolean for legal values */
        VARIABLE        *vp
)
{
        if (!vp->nass) return;
        onevalue(vp);
        switch (UPPER(vp->value[0])) {
        case 'T':
                if (badmatch(vp->value, "TRUE")) break;
                return;
        case 'F':
                if (badmatch(vp->value, "FALSE")) break;
                return;
        }
        fprintf(stderr, "%s: illegal value for boolean variable '%s'\n",
                        progname, vp->name);
        quit(1);
}


void
qualvalue(                      /* check qualitative var. for legal values */
        VARIABLE        *vp
)
{
        if (!vp->nass) return;
        onevalue(vp);
        switch (UPPER(vp->value[0])) {
        case 'L':
                if (badmatch(vp->value, "LOW")) break;
                return;
        case 'M':
                if (badmatch(vp->value, "MEDIUM")) break;
                return;
        case 'H':
                if (badmatch(vp->value, "HIGH")) break;
                return;
        }
        fprintf(stderr, "%s: illegal value for qualitative variable '%s'\n",
                        progname, vp->name);
        quit(1);
}


void
intvalue(                               /* check integer variable for legal values */
        VARIABLE        *vp
)
{
        if (!vp->nass) return;
        onevalue(vp);
        if (isint(vp->value)) return;
        fprintf(stderr, "%s: illegal value for integer variable '%s'\n",
                        progname, vp->name);
        quit(1);
}


void
fltvalue(                               /* check float variable for legal values */
        VARIABLE        *vp
)
{
        if (!vp->nass) return;
        onevalue(vp);
        if (isflt(vp->value)) return;
        fprintf(stderr, "%s: illegal value for real variable '%s'\n",
                        progname, vp->name);
        quit(1);
}


void
printvars(                              /* print variable values */
        FILE    *fp
)
{
        int     i, j, k, clipline;
        char    *cp;

        for (i = 0; i < NVARS; i++)             /* print each variable */
            for (j = 0; j < vdef(i); j++) {     /* print each assignment */
                fputs(vnam(i), fp);
                fputs("= ", fp);
                k = clipline = ( vv[i].fixval == catvalues ? 64 : 236 )
                                - strlen(vnam(i)) ;
                cp = nvalue(i, j);
                while (*cp) {
                    putc(*cp++, fp);
                    if (--k <= 0) {             /* line too long */
                        while (*cp && !isspace(*cp))
                            fputc(*cp++, fp);   /* finish this word */
                        if (*cp) {              /* start new line */
                            if (vv[i].fixval == catvalues) {
                                fputc('\n', fp);
                                fputs(vnam(i), fp);
                                fputc('=', fp);
                            } else
                                fputs(" \\\n", fp);
                            k = clipline;
                        }
                    }
                }
                fputc('\n', fp);
            }
        fflush(fp);
}
Revision:	2.15
Committed:	Fri May 22 14:44:11 2015 UTC (8 years, 11 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R2, rad5R0, rad5R1
Changes since 2.14:	+50 -37 lines
Log Message:	Added prototypes
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id: loadvars.c,v 2.14 2003/07/30 10:11:06 schorsch Exp $";
3	#endif
4	/*
5	* Routines for loading and checking variables from file.
6	*/
7
8	#include "copyright.h"
9
10	#include <stdio.h>
11	#include <stdlib.h>
12	#include <ctype.h>
13
14	#include "standard.h"
15	#include "vars.h"
16
17	#define NOCHAR 127 /* constant for character to delete */
18
19	extern char *fgetline();
20
21
22	void
23	loadvars( /* load variables into vv from file */
24	char *rfname
25	)
26	{
27	FILE *fp;
28	char buf[512];
29	char *cp;
30
31	if (rfname == NULL)
32	fp = stdin;
33	else if ((fp = fopen(rfname, "r")) == NULL) {
34	perror(rfname);
35	quit(1);
36	}
37	while (fgetline(buf, sizeof(buf), fp) != NULL) {
38	for (cp = buf; *cp; cp++) {
39	switch (*cp) {
40	case '\\':
41	*cp++ = NOCHAR;
42	continue;
43	case '#':
44	*cp = '\0';
45	break;
46	default:
47	continue;
48	}
49	break;
50	}
51	if (setvariable(buf, matchvar) < 0) {
52	fprintf(stderr, "%s: unknown variable: %s\n",
53	rfname, buf);
54	quit(1);
55	}
56	}
57	fclose(fp);
58	}
59
60
61	int
62	setvariable( /* assign variable according to string */
63	char *ass,
64	VARIABLE (mv)(char*)
65	)
66	{
67	char varname[32];
68	int n;
69	char *cp;
70	VARIABLE *vp;
71	int i;
72
73	while (isspace(ass)) / skip leading space */
74	ass++;
75	cp = varname; /* extract name */
76	while (cp < varname+sizeof(varname)-1
77	&& ass && !isspace(ass) && *ass != '=')
78	cp++ = ass++;
79	*cp = '\0';
80	if (!varname[0])
81	return(0); /* no variable name! */
82	/* trim value */
83	while (isspace(ass) \|\| ass == '=')
84	ass++;
85	for (n = strlen(ass); n > 0; n--)
86	if (!isspace(ass[n-1]))
87	break;
88	if (!n)
89	return(0); /* no assignment */
90	/* match variable from list */
91	vp = (*mv)(varname);
92	if (vp == NULL)
93	return(-1);
94	/* assign new value */
95	if ( (i = vp->nass) ) {
96	cp = vp->value;
97	while (i--)
98	while (*cp++)
99	;
100	i = cp - vp->value;
101	vp->value = (char )realloc((void )vp->value, i+n+1);
102	} else
103	vp->value = (char *)malloc(n+1);
104	if (vp->value == NULL) {
105	perror(progname);
106	quit(1);
107	}
108	cp = vp->value+i; /* copy value, squeezing spaces */
109	cp = ass;
110	for (i = 1; i <= n; i++) {
111	if (ass[i] == NOCHAR)
112	continue;
113	if (isspace(*cp))
114	while (isspace(ass[i]))
115	i++;
116	*++cp = ass[i];
117	}
118	if (isspace(cp)) / remove trailing space */
119	*cp = '\0';
120	return(++vp->nass);
121	}
122
123
124	VARIABLE *
125	matchvar( /* match a variable by its name */
126	char *nam
127	)
128	{
129	int n = strlen(nam);
130	int i;
131
132	for (i = 0; i < NVARS; i++)
133	if (n >= vv[i].nick && !strncmp(nam, vv[i].name, n))
134	return(vv+i);
135	return(NULL);
136	}
137
138
139	char *
140	nvalue( /* return nth variable value */
141	int vn,
142	int n
143	)
144	{
145	char *cp;
146
147	if ((vval(vn) == NULL) \| (n < 0) \| (n >= vdef(vn)))
148	return(NULL);
149	cp = vval(vn);
150	while (n--)
151	while (*cp++)
152	;
153	return(cp);
154	}
155
156
157	void
158	checkvalues(void) /* check assignments */
159	{
160	int i;
161
162	for (i = 0; i < NVARS; i++)
163	if (vv[i].fixval != NULL)
164	(*vv[i].fixval)(vv+i);
165	}
166
167
168	void
169	onevalue( /* only one assignment for this variable */
170	VARIABLE *vp
171	)
172	{
173	if (vp->nass < 2)
174	return;
175	if (!nowarn)
176	fprintf(stderr,
177	"%s: warning - multiple assignment of variable '%s'\n",
178	progname, vp->name);
179	do
180	vp->value += strlen(vp->value)+1;
181	while (--vp->nass > 1);
182	}
183
184
185	void
186	catvalues( /* concatenate variable values */
187	VARIABLE *vp
188	)
189	{
190	char *cp;
191
192	if (vp->nass < 2)
193	return;
194	for (cp = vp->value; vp->nass > 1; vp->nass--) {
195	while (*cp)
196	cp++;
197	*cp++ = ' ';
198	}
199	}
200
201
202	int
203	badmatch( /* case insensitive truncated comparison */
204	char *tv,
205	char *cv
206	)
207	{
208	if (!tv) return(1); / null string cannot match */
209	do
210	if (UPPER(tv) != cv++)
211	return(1);
212	while (*++tv);
213	return(0); /* OK */
214	}
215
216
217	void
218	boolvalue( /* check boolean for legal values */
219	VARIABLE *vp
220	)
221	{
222	if (!vp->nass) return;
223	onevalue(vp);
224	switch (UPPER(vp->value[0])) {
225	case 'T':
226	if (badmatch(vp->value, "TRUE")) break;
227	return;
228	case 'F':
229	if (badmatch(vp->value, "FALSE")) break;
230	return;
231	}
232	fprintf(stderr, "%s: illegal value for boolean variable '%s'\n",
233	progname, vp->name);
234	quit(1);
235	}
236
237
238	void
239	qualvalue( /* check qualitative var. for legal values */
240	VARIABLE *vp
241	)
242	{
243	if (!vp->nass) return;
244	onevalue(vp);
245	switch (UPPER(vp->value[0])) {
246	case 'L':
247	if (badmatch(vp->value, "LOW")) break;
248	return;
249	case 'M':
250	if (badmatch(vp->value, "MEDIUM")) break;
251	return;
252	case 'H':
253	if (badmatch(vp->value, "HIGH")) break;
254	return;
255	}
256	fprintf(stderr, "%s: illegal value for qualitative variable '%s'\n",
257	progname, vp->name);
258	quit(1);
259	}
260
261
262	void
263	intvalue( /* check integer variable for legal values */
264	VARIABLE *vp
265	)
266	{
267	if (!vp->nass) return;
268	onevalue(vp);
269	if (isint(vp->value)) return;
270	fprintf(stderr, "%s: illegal value for integer variable '%s'\n",
271	progname, vp->name);
272	quit(1);
273	}
274
275
276	void
277	fltvalue( /* check float variable for legal values */
278	VARIABLE *vp
279	)
280	{
281	if (!vp->nass) return;
282	onevalue(vp);
283	if (isflt(vp->value)) return;
284	fprintf(stderr, "%s: illegal value for real variable '%s'\n",
285	progname, vp->name);
286	quit(1);
287	}
288
289
290	void
291	printvars( /* print variable values */
292	FILE *fp
293	)
294	{
295	int i, j, k, clipline;
296	char *cp;
297
298	for (i = 0; i < NVARS; i++) /* print each variable */
299	for (j = 0; j < vdef(i); j++) { /* print each assignment */
300	fputs(vnam(i), fp);
301	fputs("= ", fp);
302	k = clipline = ( vv[i].fixval == catvalues ? 64 : 236 )
303	- strlen(vnam(i)) ;
304	cp = nvalue(i, j);
305	while (*cp) {
306	putc(*cp++, fp);
307	if (--k <= 0) { /* line too long */
308	while (cp && !isspace(cp))
309	fputc(cp++, fp); / finish this word */
310	if (cp) { / start new line */
311	if (vv[i].fixval == catvalues) {
312	fputc('\n', fp);
313	fputs(vnam(i), fp);
314	fputc('=', fp);
315	} else
316	fputs(" \\\n", fp);
317	k = clipline;
318	}
319	}
320	}
321	fputc('\n', fp);
322	}
323	fflush(fp);
324	}