src/common/words.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 * Routines for recognizing and moving about words in strings.
 *
 * External symbols declared in standard.h
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *         notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

#include  <ctype.h>
#include  <string.h>

#ifdef  BSD
#define  strchr         index
#endif


char *
atos(rs, nb, s)                 /* get word from string, returning rs */
char  *rs;
register int  nb;
register char  *s;
{
        register char  *cp = rs;

        while (isspace(*s))
                s++;
        while (--nb > 0 && *s && !isspace(*s))
                *cp++ = *s++;
        *cp = '\0';
        return(rs);
}


char *
nextword(cp, nb, s)             /* get (quoted) word, returning new s */
register char  *cp;
register int  nb;
register char  *s;
{
        int     quote = 0;

        if (s == NULL) return(NULL);
        while (isspace(*s))
                s++;
        switch (*s) {
        case '\0':
                return(NULL);
        case '"':
        case '\'':
                quote = *s++;
        }
        while (--nb > 0 && *s && (quote ? *s!=quote : !isspace(*s)))
                *cp++ = *s++;
        *cp = '\0';
        if (quote && *s==quote)
                s++;
        return(s);
}


char *
sskip(s)                        /* skip word in string, leaving on space */
register char  *s;
{
        while (isspace(*s))
                s++;
        while (*s && !isspace(*s))
                s++;
        return(s);
}


char *
sskip2(s, n)                    /* skip word(s) in string, leaving on word */
register char  *s;
register int    n;
{
        while (isspace(*s))
                s++;
        while (n-- > 0) {
                while (*s && !isspace(*s))
                        s++;
                while (isspace(*s))
                        s++;
        }
        return(s);
}


char *
iskip(s)                        /* skip integer in string */
register char  *s;
{
        while (isspace(*s))
                s++;
        if (*s == '-' || *s == '+')
                s++;
        if (!isdigit(*s))
                return(NULL);
        do
                s++;
        while (isdigit(*s));
        return(s);
}


char *
fskip(s)                        /* skip float in string */
register char  *s;
{
        register char  *cp;

        while (isspace(*s))
                s++;
        if (*s == '-' || *s == '+')
                s++;
        cp = s;
        while (isdigit(*cp))
                cp++;
        if (*cp == '.') {
                cp++; s++;
                while (isdigit(*cp))
                        cp++;
        }
        if (cp == s)
                return(NULL);
        if (*cp == 'e' || *cp == 'E')
                return(iskip(cp+1));
        return(cp);
}


int
isint(s)                        /* check integer format */
char  *s;
{
        register char  *cp;

        cp = iskip(s);
        return(cp != NULL && *cp == '\0');
}


int
isintd(s, ds)                   /* check integer format with delimiter set */
char  *s, *ds;
{
        register char  *cp;

        cp = iskip(s);
        return(cp != NULL && strchr(ds, *cp) != NULL);
}


int
isflt(s)                        /* check float format */
char  *s;
{
        register char  *cp;

        cp = fskip(s);
        return(cp != NULL && *cp == '\0');
}


int
isfltd(s, ds)                   /* check integer format with delimiter set */
char  *s, *ds;
{
        register char  *cp;

        cp = fskip(s);
        return(cp != NULL && strchr(ds, *cp) != NULL);
}
Revision:	2.5
Committed:	Sat Feb 22 02:07:23 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.4:	+65 -8 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id$";
3	#endif
4	/*
5	* Routines for recognizing and moving about words in strings.
6	*
7	* External symbols declared in standard.h
8	*/
9
10	/* ====================================================================
11	* The Radiance Software License, Version 1.0
12	*
13	* Copyright (c) 1990 - 2002 The Regents of the University of California,
14	* through Lawrence Berkeley National Laboratory. All rights reserved.
15	*
16	* Redistribution and use in source and binary forms, with or without
17	* modification, are permitted provided that the following conditions
18	* are met:
19	*
20	* 1. Redistributions of source code must retain the above copyright
21	* notice, this list of conditions and the following disclaimer.
22	*
23	* 2. Redistributions in binary form must reproduce the above copyright
24	* notice, this list of conditions and the following disclaimer in
25	* the documentation and/or other materials provided with the
26	* distribution.
27	*
28	* 3. The end-user documentation included with the redistribution,
29	* if any, must include the following acknowledgment:
30	* "This product includes Radiance software
31	* (http://radsite.lbl.gov/)
32	* developed by the Lawrence Berkeley National Laboratory
33	* (http://www.lbl.gov/)."
34	* Alternately, this acknowledgment may appear in the software itself,
35	* if and wherever such third-party acknowledgments normally appear.
36	*
37	* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
38	* and "The Regents of the University of California" must
39	* not be used to endorse or promote products derived from this
40	* software without prior written permission. For written
41	* permission, please contact [email protected].
42	*
43	* 5. Products derived from this software may not be called "Radiance",
44	* nor may "Radiance" appear in their name, without prior written
45	* permission of Lawrence Berkeley National Laboratory.
46	*
47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
48	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
50	* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
51	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
54	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
56	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58	* SUCH DAMAGE.
59	* ====================================================================
60	*
61	* This software consists of voluntary contributions made by many
62	* individuals on behalf of Lawrence Berkeley National Laboratory. For more
63	* information on Lawrence Berkeley National Laboratory, please see
64	* <http://www.lbl.gov/>.
65	*/
66
67	#include <ctype.h>
68	#include <string.h>
69
70	#ifdef BSD
71	#define strchr index
72	#endif
73
74
75	char *
76	atos(rs, nb, s) /* get word from string, returning rs */
77	char *rs;
78	register int nb;
79	register char *s;
80	{
81	register char *cp = rs;
82
83	while (isspace(*s))
84	s++;
85	while (--nb > 0 && s && !isspace(s))
86	cp++ = s++;
87	*cp = '\0';
88	return(rs);
89	}
90
91
92	char *
93	nextword(cp, nb, s) /* get (quoted) word, returning new s */
94	register char *cp;
95	register int nb;
96	register char *s;
97	{
98	int quote = 0;
99
100	if (s == NULL) return(NULL);
101	while (isspace(*s))
102	s++;
103	switch (*s) {
104	case '\0':
105	return(NULL);
106	case '"':
107	case '\'':
108	quote = *s++;
109	}
110	while (--nb > 0 && s && (quote ? s!=quote : !isspace(*s)))
111	cp++ = s++;
112	*cp = '\0';
113	if (quote && *s==quote)
114	s++;
115	return(s);
116	}
117
118
119	char *
120	sskip(s) /* skip word in string, leaving on space */
121	register char *s;
122	{
123	while (isspace(*s))
124	s++;
125	while (s && !isspace(s))
126	s++;
127	return(s);
128	}
129
130
131	char *
132	sskip2(s, n) /* skip word(s) in string, leaving on word */
133	register char *s;
134	register int n;
135	{
136	while (isspace(*s))
137	s++;
138	while (n-- > 0) {
139	while (s && !isspace(s))
140	s++;
141	while (isspace(*s))
142	s++;
143	}
144	return(s);
145	}
146
147
148	char *
149	iskip(s) /* skip integer in string */
150	register char *s;
151	{
152	while (isspace(*s))
153	s++;
154	if (s == '-' \|\| s == '+')
155	s++;
156	if (!isdigit(*s))
157	return(NULL);
158	do
159	s++;
160	while (isdigit(*s));
161	return(s);
162	}
163
164
165	char *
166	fskip(s) /* skip float in string */
167	register char *s;
168	{
169	register char *cp;
170
171	while (isspace(*s))
172	s++;
173	if (s == '-' \|\| s == '+')
174	s++;
175	cp = s;
176	while (isdigit(*cp))
177	cp++;
178	if (*cp == '.') {
179	cp++; s++;
180	while (isdigit(*cp))
181	cp++;
182	}
183	if (cp == s)
184	return(NULL);
185	if (cp == 'e' \|\| cp == 'E')
186	return(iskip(cp+1));
187	return(cp);
188	}
189
190
191	int
192	isint(s) /* check integer format */
193	char *s;
194	{
195	register char *cp;
196
197	cp = iskip(s);
198	return(cp != NULL && *cp == '\0');
199	}
200
201
202	int
203	isintd(s, ds) /* check integer format with delimiter set */
204	char s, ds;
205	{
206	register char *cp;
207
208	cp = iskip(s);
209	return(cp != NULL && strchr(ds, *cp) != NULL);
210	}
211
212
213	int
214	isflt(s) /* check float format */
215	char *s;
216	{
217	register char *cp;
218
219	cp = fskip(s);
220	return(cp != NULL && *cp == '\0');
221	}
222
223
224	int
225	isfltd(s, ds) /* check integer format with delimiter set */
226	char s, ds;
227	{
228	register char *cp;
229
230	cp = fskip(s);
231	return(cp != NULL && strchr(ds, *cp) != NULL);
232	}