source: buchla-68k/libcio/filname.c@ 0cfc372

Last change on this file since 0cfc372 was f40a309, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Unix line breaks.
  • Property mode set to 100644
File size: 2.9 KB
Line 
1/*
2 =============================================================================
3 filname.c -- file name and extension extractors
4 Version 3 -- 1987-07-09 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#define TESTER 0 /* define non-zero for test routine */
9
10#include <stddefs.h>
11
12#define MAX_NAME 8 /* maximum length of a file name */
13#define MAX_EXT 3 /* maximum length of an extension */
14
15/*
16 =============================================================================
17 FilName(s, p) -- Return a pointer to a string containing the file name
18 found in the string at 's'. Copy the file name into string 'p'.
19 =============================================================================
20*/
21
22char *
23FilName(s, p)
24register char *s, *p;
25{
26 register char *tp;
27 register int i;
28
29 tp = p;
30
31 for (i = 0; i < MAX_NAME; i++) { /* scan the name */
32
33 if (*s) { /* ... until we hit a '\0' */
34
35 if (*s EQ '.') /* ... or a '.' */
36 break;
37
38 *p++ = *s++; /* ... copying as we go */
39
40 } else { /* stop at '\0' */
41
42 *p = '\0'; /* terminate the string */
43 return(tp); /* return a pointer to it */
44 }
45 }
46
47 *p = '\0'; /* copied MAX_NAME bytes - that's all folks */
48 return(tp);
49}
50
51/*
52
53*/
54
55/*
56 =============================================================================
57 FilExt(s, p) -- Returns a pointer to a copy of the extension of
58 the file name in 's'. The file name is copied into string 'p' and
59 a pointer to 'p' is returned.
60 =============================================================================
61*/
62
63char *
64FilExt(s, p)
65register char *s, *p;
66{
67 register char c, *tp;
68 register int i;
69
70 tp = p;
71
72 while (c = *s) { /* scan the string */
73
74 if (c EQ '.') { /* ... until we hit the dot */
75
76 ++s; /* point past the dot */
77
78 for (i = 0; i < MAX_EXT; i++) { /* scan the extension ... */
79
80 if (*s) { /* ... until we hit a '\0' */
81
82 *p++ = *s++; /* ... copying as we go */
83
84 } else { /* stop at '\0' */
85
86 *p = '\0'; /* terminate the string */
87 return(tp); /* return a pointer to it */
88 }
89 }
90
91 *p = '\0'; /* copied MAX_EXT bytes - that's all folks */
92 return(tp); /* return a pointer to the result */
93
94 } else {
95
96 ++s; /* advance the pointer */
97 }
98 }
99
100 *p = '\0'; /* terminate the string */
101 return(tp); /* return a pointer to the result */
102}
103
104/*
105
106*/
107
108#if TESTER
109
110char *fn[] = { /* test cases */
111
112 "FILE.NAM",
113 "FILE",
114 "FILE.",
115 ".NAM",
116 ".",
117 "",
118 "fartoolonganame.longextension",
119 "fartoolonganame",
120 "fartoolonganame.",
121 ".longextension"
122};
123
124#define NCASES ((sizeof fn) / (sizeof (char *)))
125
126char temp1[MAX_NAME+1], temp2[MAX_EXT+1];
127
128fnt(s) /* test both functions and print the result */
129char *s;
130{
131 printf("[%s] gave [%s] [%s]\r\n",
132 s, FilName(s, temp1), FilExt(s, temp2));
133}
134
135main()
136{
137 int i;
138
139 /* hand the functions each of the test cases */
140
141 for (i = 0; i < NCASES; i++)
142 fnt(fn[i]);
143
144 exit(0);
145}
146
147#endif
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