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root/radiance/ray/src/common/words.c
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Comparing ray/src/common/words.c (file contents):
Revision 2.3 by greg, Wed Jan 17 10:53:38 1996 UTC vs.
Revision 2.10 by greg, Fri Feb 18 00:40:25 2011 UTC

# Line 1 | Line 1
1 – /* Copyright (c) 1996 Regents of the University of California */
2 –
1   #ifndef lint
2 < static char SCCSid[] = "$SunId$ LBL";
2 > static const char RCSid[] = "$Id$";
3   #endif
6 –
4   /*
5   * Routines for recognizing and moving about words in strings.
6 + *
7 + * External symbols declared in standard.h
8   */
9  
10 + #include "copyright.h"
11 +
12   #include  <ctype.h>
13 + #include  <string.h>
14  
15 < #ifdef  BSD
14 < #define  strchr         index
15 < #endif
15 > #include  "rtio.h"
16  
17 – #define  NULL           0
18 –
19 – extern char  *strchr();
20 –
21 –
17   char *
18 < atos(rs, nb, s)                 /* get next word from string */
24 < char  *rs;
25 < register int  nb;
26 < register char  *s;
18 > atos(char *rs, int nb, char *s)         /* get word from string, returning rs */
19   {
20          register char  *cp = rs;
21  
# Line 37 | Line 29 | register char  *s;
29  
30  
31   char *
32 < sskip(s)                        /* skip word in string, leaving on space */
41 < register char  *s;
32 > nextword(char *cp, int nb, char *s)     /* get (quoted) word, returning new s */
33   {
34 +        int     quote = 0;
35 +
36 +        if (s == NULL) return(NULL);
37          while (isspace(*s))
38                  s++;
39 +        switch (*s) {
40 +        case '\0':
41 +                return(NULL);
42 +        case '"':
43 +        case '\'':
44 +                quote = *s++;
45 +        }
46 +        while (--nb > 0 && *s && (quote ? *s!=quote : !isspace(*s)))
47 +                *cp++ = *s++;
48 +        *cp = '\0';
49 +        if (quote && *s==quote)
50 +                s++;
51 +        return(s);
52 + }
53 +
54 +
55 + char *
56 + sskip(char *s)                  /* skip word in string, leaving on space */
57 + {
58 +        while (isspace(*s))
59 +                s++;
60          while (*s && !isspace(*s))
61                  s++;
62          return(s);
# Line 49 | Line 64 | register char  *s;
64  
65  
66   char *
67 < sskip2(s, n)                    /* skip word(s) in string, leaving on word */
53 < register char  *s;
54 < register int    n;
67 > sskip2(char *s, int n)          /* skip word(s) in string, leaving on word */
68   {
69          while (isspace(*s))
70                  s++;
# Line 66 | Line 79 | register int   n;
79  
80  
81   char *
82 < iskip(s)                        /* skip integer in string */
70 < register char  *s;
82 > iskip(char *s)                  /* skip integer in string */
83   {
84          while (isspace(*s))
85                  s++;
# Line 83 | Line 95 | register char  *s;
95  
96  
97   char *
98 < fskip(s)                        /* skip float in string */
87 < register char  *s;
98 > fskip(char *s)                  /* skip float in string */
99   {
100          register char  *cp;
101  
# Line 108 | Line 119 | register char  *s;
119   }
120  
121  
122 < isint(s)                        /* check integer format */
123 < char  *s;
122 > int
123 > isint(char *s)                  /* check integer format */
124   {
125          register char  *cp;
126  
# Line 118 | Line 129 | char  *s;
129   }
130  
131  
132 < isintd(s, ds)                   /* check integer format with delimiter set */
133 < char  *s, *ds;
132 > int
133 > isintd(char *s, char *ds)       /* check integer format with delimiter set */
134   {
135          register char  *cp;
136  
# Line 128 | Line 139 | char  *s, *ds;
139   }
140  
141  
142 < isflt(s)                        /* check float format */
143 < char  *s;
142 > int
143 > isflt(char *s)                  /* check float format */
144   {
145          register char  *cp;
146  
# Line 138 | Line 149 | char  *s;
149   }
150  
151  
152 < isfltd(s, ds)                   /* check integer format with delimiter set */
153 < char  *s, *ds;
152 > int
153 > isfltd(char *s, char *ds)       /* check integer format with delimiter set */
154   {
155          register char  *cp;
156  
157          cp = fskip(s);
158          return(cp != NULL && strchr(ds, *cp) != NULL);
159 + }
160 +
161 +
162 + int
163 + isname(char *s)                 /* check for legal identifier name */
164 + {
165 +        while (*s == '_')                       /* skip leading underscores */
166 +                s++;
167 +        if (!isascii(*s) || !isalpha(*s))       /* start with a letter */
168 +                return(0);
169 +        while (isascii(*++s) && isgraph(*s))    /* all visible characters */
170 +                ;
171 +        return(*s == '\0');                     /* ending in nul */
172   }

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