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
 */

#include "copyright.h"

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


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:	2.7
Committed:	Mon Mar 10 17:26:26 2003 UTC (21 years, 1 month ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Changes since 2.6:	+1 -5 lines
Log Message:	Compile fixes for Linux
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.7	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	greg	2.6	#include "copyright.h"
11	greg	1.1
12			#include <ctype.h>
13	greg	2.5	#include <string.h>
14	greg	1.1
15
16			char *
17	gwlarson	2.4	atos(rs, nb, s) /* get word from string, returning rs */
18	greg	1.2	char *rs;
19			register int nb;
20			register char *s;
21			{
22			register char *cp = rs;
23
24			while (isspace(*s))
25			s++;
26			while (--nb > 0 && s && !isspace(s))
27			cp++ = s++;
28			*cp = '\0';
29			return(rs);
30	gwlarson	2.4	}
31
32
33			char *
34			nextword(cp, nb, s) /* get (quoted) word, returning new s */
35			register char *cp;
36			register int nb;
37			register char *s;
38			{
39			int quote = 0;
40
41			if (s == NULL) return(NULL);
42			while (isspace(*s))
43			s++;
44			switch (*s) {
45			case '\0':
46			return(NULL);
47			case '"':
48			case '\'':
49			quote = *s++;
50			}
51			while (--nb > 0 && s && (quote ? s!=quote : !isspace(*s)))
52			cp++ = s++;
53			*cp = '\0';
54			if (quote && *s==quote)
55			s++;
56			return(s);
57	greg	1.2	}
58
59
60			char *
61	greg	2.3	sskip(s) /* skip word in string, leaving on space */
62	greg	1.1	register char *s;
63			{
64			while (isspace(*s))
65			s++;
66			while (s && !isspace(s))
67	greg	2.2	s++;
68	greg	2.3	return(s);
69			}
70
71
72			char *
73			sskip2(s, n) /* skip word(s) in string, leaving on word */
74			register char *s;
75			register int n;
76			{
77	greg	2.2	while (isspace(*s))
78	greg	1.1	s++;
79	greg	2.3	while (n-- > 0) {
80			while (s && !isspace(s))
81			s++;
82			while (isspace(*s))
83			s++;
84			}
85	greg	1.1	return(s);
86			}
87
88
89			char *
90			iskip(s) /* skip integer in string */
91	greg	1.2	register char *s;
92	greg	1.1	{
93	greg	1.2	while (isspace(*s))
94			s++;
95			if (s == '-' \|\| s == '+')
96			s++;
97			if (!isdigit(*s))
98			return(NULL);
99			do
100			s++;
101			while (isdigit(*s));
102			return(s);
103	greg	1.1	}
104
105
106			char *
107			fskip(s) /* skip float in string */
108	greg	1.2	register char *s;
109	greg	1.1	{
110	greg	1.4	register char *cp;
111	greg	1.1
112	greg	1.4	while (isspace(*s))
113			s++;
114			if (s == '-' \|\| s == '+')
115			s++;
116			cp = s;
117	greg	1.1	while (isdigit(*cp))
118			cp++;
119			if (*cp == '.') {
120	greg	1.2	cp++; s++;
121	greg	1.1	while (isdigit(*cp))
122			cp++;
123			}
124	greg	1.2	if (cp == s)
125			return(NULL);
126	greg	1.1	if (cp == 'e' \|\| cp == 'E')
127			return(iskip(cp+1));
128			return(cp);
129			}
130
131
132	greg	2.5	int
133	greg	1.1	isint(s) /* check integer format */
134			char *s;
135			{
136			register char *cp;
137
138			cp = iskip(s);
139	greg	1.2	return(cp != NULL && *cp == '\0');
140	greg	1.1	}
141
142
143	greg	2.5	int
144	greg	1.1	isintd(s, ds) /* check integer format with delimiter set */
145			char s, ds;
146			{
147			register char *cp;
148
149			cp = iskip(s);
150	greg	1.3	return(cp != NULL && strchr(ds, *cp) != NULL);
151	greg	1.1	}
152
153
154	greg	2.5	int
155	greg	1.1	isflt(s) /* check float format */
156			char *s;
157			{
158			register char *cp;
159
160			cp = fskip(s);
161	greg	1.2	return(cp != NULL && *cp == '\0');
162	greg	1.1	}
163
164
165	greg	2.5	int
166	greg	1.1	isfltd(s, ds) /* check integer format with delimiter set */
167			char s, ds;
168			{
169			register char *cp;
170
171			cp = fskip(s);
172	greg	1.3	return(cp != NULL && strchr(ds, *cp) != NULL);
173	greg	1.1	}