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greg |
1.1 |
#ifndef lint |
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greg |
2.9 |
static const char RCSid[] = "$Id$"; |
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greg |
1.1 |
#endif |
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/* |
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* Routines for recognizing and moving about words in strings. |
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greg |
2.5 |
* |
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* External symbols declared in standard.h |
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*/ |
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greg |
2.6 |
#include "copyright.h" |
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greg |
1.1 |
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12 |
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#include <ctype.h> |
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greg |
2.5 |
#include <string.h> |
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greg |
1.1 |
|
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schorsch |
2.8 |
#include "rtio.h" |
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greg |
1.1 |
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char * |
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gwlarson |
2.4 |
atos(rs, nb, s) /* get word from string, returning rs */ |
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greg |
1.2 |
char *rs; |
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register int nb; |
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register char *s; |
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{ |
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register char *cp = rs; |
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while (isspace(*s)) |
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s++; |
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while (--nb > 0 && *s && !isspace(*s)) |
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*cp++ = *s++; |
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*cp = '\0'; |
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return(rs); |
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gwlarson |
2.4 |
} |
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char * |
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nextword(cp, nb, s) /* get (quoted) word, returning new s */ |
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register char *cp; |
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register int nb; |
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register char *s; |
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{ |
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int quote = 0; |
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if (s == NULL) return(NULL); |
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while (isspace(*s)) |
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s++; |
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switch (*s) { |
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case '\0': |
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return(NULL); |
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case '"': |
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case '\'': |
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quote = *s++; |
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} |
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while (--nb > 0 && *s && (quote ? *s!=quote : !isspace(*s))) |
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*cp++ = *s++; |
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*cp = '\0'; |
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if (quote && *s==quote) |
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s++; |
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return(s); |
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greg |
1.2 |
} |
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char * |
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greg |
2.3 |
sskip(s) /* skip word in string, leaving on space */ |
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greg |
1.1 |
register char *s; |
64 |
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{ |
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while (isspace(*s)) |
66 |
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s++; |
67 |
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while (*s && !isspace(*s)) |
68 |
greg |
2.2 |
s++; |
69 |
greg |
2.3 |
return(s); |
70 |
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} |
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char * |
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sskip2(s, n) /* skip word(s) in string, leaving on word */ |
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register char *s; |
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register int n; |
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{ |
78 |
greg |
2.2 |
while (isspace(*s)) |
79 |
greg |
1.1 |
s++; |
80 |
greg |
2.3 |
while (n-- > 0) { |
81 |
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while (*s && !isspace(*s)) |
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s++; |
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while (isspace(*s)) |
84 |
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s++; |
85 |
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} |
86 |
greg |
1.1 |
return(s); |
87 |
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} |
88 |
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89 |
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90 |
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char * |
91 |
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iskip(s) /* skip integer in string */ |
92 |
greg |
1.2 |
register char *s; |
93 |
greg |
1.1 |
{ |
94 |
greg |
1.2 |
while (isspace(*s)) |
95 |
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s++; |
96 |
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if (*s == '-' || *s == '+') |
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s++; |
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if (!isdigit(*s)) |
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return(NULL); |
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do |
101 |
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s++; |
102 |
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while (isdigit(*s)); |
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return(s); |
104 |
greg |
1.1 |
} |
105 |
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106 |
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107 |
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char * |
108 |
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fskip(s) /* skip float in string */ |
109 |
greg |
1.2 |
register char *s; |
110 |
greg |
1.1 |
{ |
111 |
greg |
1.4 |
register char *cp; |
112 |
greg |
1.1 |
|
113 |
greg |
1.4 |
while (isspace(*s)) |
114 |
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s++; |
115 |
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if (*s == '-' || *s == '+') |
116 |
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s++; |
117 |
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cp = s; |
118 |
greg |
1.1 |
while (isdigit(*cp)) |
119 |
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cp++; |
120 |
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if (*cp == '.') { |
121 |
greg |
1.2 |
cp++; s++; |
122 |
greg |
1.1 |
while (isdigit(*cp)) |
123 |
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cp++; |
124 |
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} |
125 |
greg |
1.2 |
if (cp == s) |
126 |
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return(NULL); |
127 |
greg |
1.1 |
if (*cp == 'e' || *cp == 'E') |
128 |
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return(iskip(cp+1)); |
129 |
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return(cp); |
130 |
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} |
131 |
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132 |
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133 |
greg |
2.5 |
int |
134 |
greg |
1.1 |
isint(s) /* check integer format */ |
135 |
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char *s; |
136 |
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{ |
137 |
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register char *cp; |
138 |
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139 |
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cp = iskip(s); |
140 |
greg |
1.2 |
return(cp != NULL && *cp == '\0'); |
141 |
greg |
1.1 |
} |
142 |
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143 |
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144 |
greg |
2.5 |
int |
145 |
greg |
1.1 |
isintd(s, ds) /* check integer format with delimiter set */ |
146 |
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char *s, *ds; |
147 |
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{ |
148 |
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register char *cp; |
149 |
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150 |
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cp = iskip(s); |
151 |
greg |
1.3 |
return(cp != NULL && strchr(ds, *cp) != NULL); |
152 |
greg |
1.1 |
} |
153 |
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154 |
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155 |
greg |
2.5 |
int |
156 |
greg |
1.1 |
isflt(s) /* check float format */ |
157 |
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char *s; |
158 |
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{ |
159 |
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register char *cp; |
160 |
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161 |
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cp = fskip(s); |
162 |
greg |
1.2 |
return(cp != NULL && *cp == '\0'); |
163 |
greg |
1.1 |
} |
164 |
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165 |
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166 |
greg |
2.5 |
int |
167 |
greg |
1.1 |
isfltd(s, ds) /* check integer format with delimiter set */ |
168 |
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char *s, *ds; |
169 |
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{ |
170 |
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register char *cp; |
171 |
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172 |
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cp = fskip(s); |
173 |
greg |
1.3 |
return(cp != NULL && strchr(ds, *cp) != NULL); |
174 |
greg |
1.1 |
} |