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root/radiance/src/common/words.c
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Comparing src/common/words.c (file contents):
Revision 2.8 by schorsch, Thu Jul 17 09:21:29 2003 UTC vs.
Revision 2.12 by greg, Sat Dec 28 18:05:14 2019 UTC

# Line 1 | Line 1
1   #ifndef lint
2 < static const char RCSid[] = "$Id";
2 > static const char RCSid[] = "$Id$";
3   #endif
4   /*
5   * Routines for recognizing and moving about words in strings.
# Line 10 | Line 10 | static const char RCSid[] = "$Id";
10   #include "copyright.h"
11  
12   #include  <ctype.h>
13 – #include  <string.h>
13  
14   #include  "rtio.h"
15  
16   char *
17 < atos(rs, nb, s)                 /* get word from string, returning rs */
19 < char  *rs;
20 < register int  nb;
21 < register char  *s;
17 > atos(char *rs, int nb, char *s)         /* get word from string, returning rs */
18   {
19 <        register char  *cp = rs;
19 >        char  *cp = rs;
20  
21          while (isspace(*s))
22                  s++;
# Line 32 | Line 28 | register char  *s;
28  
29  
30   char *
31 < nextword(cp, nb, s)             /* get (quoted) word, returning new s */
36 < register char  *cp;
37 < register int  nb;
38 < register char  *s;
31 > nextword(char *cp, int nb, char *s)     /* get (quoted) word, returning new s */
32   {
33          int     quote = 0;
34  
# Line 59 | Line 52 | register char  *s;
52  
53  
54   char *
55 < sskip(s)                        /* skip word in string, leaving on space */
63 < register char  *s;
55 > sskip(char *s)                  /* skip word in string, leaving on space */
56   {
57          while (isspace(*s))
58                  s++;
# Line 71 | Line 63 | register char  *s;
63  
64  
65   char *
66 < sskip2(s, n)                    /* skip word(s) in string, leaving on word */
75 < register char  *s;
76 < register int    n;
66 > sskip2(char *s, int n)          /* skip word(s) in string, leaving on word */
67   {
68          while (isspace(*s))
69                  s++;
# Line 88 | Line 78 | register int   n;
78  
79  
80   char *
81 < iskip(s)                        /* skip integer in string */
92 < register char  *s;
81 > iskip(char *s)                  /* skip integer in string */
82   {
83          while (isspace(*s))
84                  s++;
85 <        if (*s == '-' || *s == '+')
85 >        if ((*s == '-') | (*s == '+'))
86                  s++;
87          if (!isdigit(*s))
88                  return(NULL);
# Line 105 | Line 94 | register char  *s;
94  
95  
96   char *
97 < fskip(s)                        /* skip float in string */
109 < register char  *s;
97 > fskip(char *s)                  /* skip float in string */
98   {
99 <        register char  *cp;
99 >        char  *cp;
100  
101          while (isspace(*s))
102                  s++;
103 <        if (*s == '-' || *s == '+')
103 >        if ((*s == '-') | (*s == '+'))
104                  s++;
105          cp = s;
106          while (isdigit(*cp))
# Line 124 | Line 112 | register char  *s;
112          }
113          if (cp == s)
114                  return(NULL);
115 <        if (*cp == 'e' || *cp == 'E')
116 <                return(iskip(cp+1));
115 >        if ((*cp == 'e') | (*cp == 'E'))
116 >                return(isspace(*++cp) ? NULL : iskip(cp));
117          return(cp);
118   }
119  
120  
121   int
122 < isint(s)                        /* check integer format */
135 < char  *s;
122 > isint(char *s)                  /* check integer format */
123   {
124 <        register char  *cp;
124 >        char  *cp;
125  
126          cp = iskip(s);
127          return(cp != NULL && *cp == '\0');
# Line 142 | Line 129 | char  *s;
129  
130  
131   int
132 < isintd(s, ds)                   /* check integer format with delimiter set */
146 < char  *s, *ds;
132 > isintd(char *s, char *ds)       /* check integer format with delimiter set */
133   {
134 <        register char  *cp;
134 >        char  *cp;
135  
136          cp = iskip(s);
137          return(cp != NULL && strchr(ds, *cp) != NULL);
# Line 153 | Line 139 | char  *s, *ds;
139  
140  
141   int
142 < isflt(s)                        /* check float format */
157 < char  *s;
142 > isflt(char *s)                  /* check float format */
143   {
144 <        register char  *cp;
144 >        char  *cp;
145  
146          cp = fskip(s);
147          return(cp != NULL && *cp == '\0');
# Line 164 | Line 149 | char  *s;
149  
150  
151   int
152 < isfltd(s, ds)                   /* check integer format with delimiter set */
168 < char  *s, *ds;
152 > isfltd(char *s, char *ds)       /* check integer format with delimiter set */
153   {
154 <        register char  *cp;
154 >        char  *cp;
155  
156          cp = fskip(s);
157          return(cp != NULL && strchr(ds, *cp) != NULL);
158 + }
159 +
160 +
161 + int
162 + isname(char *s)                 /* check for legal identifier name */
163 + {
164 +        while (*s == '_')                       /* skip leading underscores */
165 +                s++;
166 +        if (!isascii(*s) || !isalpha(*s))       /* start with a letter */
167 +                return(0);
168 +        while (isascii(*++s) && isgraph(*s))    /* all visible characters */
169 +                ;
170 +        return(*s == '\0');                     /* ending in nul */
171   }

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