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 (22 years, 10 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
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.5	static const char RCSid[] = "$Id$";
3	greg	1.1	#endif
4			/*
5			* Routines for recognizing and moving about words in strings.
6	greg	2.5	*
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	greg	1.1	*/
66
67			#include <ctype.h>
68	greg	2.5	#include <string.h>
69	greg	1.1
70			#ifdef BSD
71			#define strchr index
72			#endif
73
74
75			char *
76	gwlarson	2.4	atos(rs, nb, s) /* get word from string, returning rs */
77	greg	1.2	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	gwlarson	2.4	}
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	greg	1.2	}
117
118
119			char *
120	greg	2.3	sskip(s) /* skip word in string, leaving on space */
121	greg	1.1	register char *s;
122			{
123			while (isspace(*s))
124			s++;
125			while (s && !isspace(s))
126	greg	2.2	s++;
127	greg	2.3	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	greg	2.2	while (isspace(*s))
137	greg	1.1	s++;
138	greg	2.3	while (n-- > 0) {
139			while (s && !isspace(s))
140			s++;
141			while (isspace(*s))
142			s++;
143			}
144	greg	1.1	return(s);
145			}
146
147
148			char *
149			iskip(s) /* skip integer in string */
150	greg	1.2	register char *s;
151	greg	1.1	{
152	greg	1.2	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	greg	1.1	}
163
164
165			char *
166			fskip(s) /* skip float in string */
167	greg	1.2	register char *s;
168	greg	1.1	{
169	greg	1.4	register char *cp;
170	greg	1.1
171	greg	1.4	while (isspace(*s))
172			s++;
173			if (s == '-' \|\| s == '+')
174			s++;
175			cp = s;
176	greg	1.1	while (isdigit(*cp))
177			cp++;
178			if (*cp == '.') {
179	greg	1.2	cp++; s++;
180	greg	1.1	while (isdigit(*cp))
181			cp++;
182			}
183	greg	1.2	if (cp == s)
184			return(NULL);
185	greg	1.1	if (cp == 'e' \|\| cp == 'E')
186			return(iskip(cp+1));
187			return(cp);
188			}
189
190
191	greg	2.5	int
192	greg	1.1	isint(s) /* check integer format */
193			char *s;
194			{
195			register char *cp;
196
197			cp = iskip(s);
198	greg	1.2	return(cp != NULL && *cp == '\0');
199	greg	1.1	}
200
201
202	greg	2.5	int
203	greg	1.1	isintd(s, ds) /* check integer format with delimiter set */
204			char s, ds;
205			{
206			register char *cp;
207
208			cp = iskip(s);
209	greg	1.3	return(cp != NULL && strchr(ds, *cp) != NULL);
210	greg	1.1	}
211
212
213	greg	2.5	int
214	greg	1.1	isflt(s) /* check float format */
215			char *s;
216			{
217			register char *cp;
218
219			cp = fskip(s);
220	greg	1.2	return(cp != NULL && *cp == '\0');
221	greg	1.1	}
222
223
224	greg	2.5	int
225	greg	1.1	isfltd(s, ds) /* check integer format with delimiter set */
226			char s, ds;
227			{
228			register char *cp;
229
230			cp = fskip(s);
231	greg	1.3	return(cp != NULL && strchr(ds, *cp) != NULL);
232	greg	1.1	}