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root/radiance/ray/src/common/paths.h
Revision: 2.13
Committed: Sun Jun 8 12:01:52 2003 UTC (20 years, 10 months ago) by schorsch
Content type: text/plain
Branch: MAIN
Changes since 2.12: +49 -1 lines
Log Message:
Cross-platform functions to find a writeable directory for tempfiles,
create unique filenames therein, and create a file.

File Contents

# Content
1 /* RCSid $Id: paths.h,v 2.12 2003/06/06 16:38:47 schorsch Exp $ */
2 /*
3 * Definitions for paths on different machines
4 */
5 #ifndef _RAD_PATHS_H_
6 #define _RAD_PATHS_H_
7 #ifdef __cplusplus
8 extern "C" {
9 #endif
10
11 #include "copyright.h"
12
13 #include <stdlib.h>
14 #include <string.h>
15 #ifdef _WIN32
16 #include <io.h>
17 #define access _access
18 #define PATH_MAX _MAX_PATH
19 #else /* _WIN32 */
20 #include <unistd.h>
21 #include <sys/param.h>
22 #endif /* _WIN32 */
23
24 #ifdef _WIN32
25
26 #define DIRSEP '/'
27 #define ISDIRSEP(c) ((c)=='/' || (c)=='\\')
28 #define ISABS(s) ((s)!=NULL \
29 && (s[0])!='\0' \
30 && ( ISDIRSEP(s[0]) \
31 || ( (s[1])!='\0' \
32 && (isupper(s[0])||islower(s[0])) \
33 && (s[1])==':')))
34 #define CASEDIRSEP case '/': case '\\'
35 #define PATHSEP ';'
36 #define MAXPATH 128
37 #define DEFAULT_TEMPDIRS {"C:/TMP", "C:/TEMP", ".", NULL}
38 #define TEMPLATE "rtXXXXXX"
39 #define TEMPLEN 8
40 #define ULIBVAR "RAYPATH"
41 #ifndef DEFPATH
42 #define DEFPATH ";c:/ray/lib"
43 #endif
44 /* <io.h> only does half the work for access() */
45 #ifndef F_OK
46 #define F_OK 00
47 #define W_OK 02
48 #define R_OK 04
49 #endif
50 extern char *fixargv0();
51
52 #else
53 #ifdef AMIGA
54
55 #define DIRSEP '/'
56 #define ISABS(s) ((s)!=NULL && (ISDIRSEP(s[0])))
57 #define PATHSEP ';'
58 #define MAXPATH 128
59 #define DEFAULT_TEMPDIRS {"/var/tmp", "/usr/tmp", "/tmp", ".", NULL}
60 #define TEMPLATE "/tmp/rtXXXXXX"
61 #define TEMPLEN 13
62 #define ULIBVAR "RAYPATH"
63 #ifndef DEFPATH
64 #define DEFPATH ";/ray/lib"
65 #endif
66 #define fixargv0(a0) (a0)
67
68 #else
69
70 #define DIRSEP '/'
71 #define ISABS(s) ((s)!=NULL && (ISDIRSEP(s[0])))
72 #define PATHSEP ':'
73 #define MAXPATH 256
74 #define DEFAULT_TEMPDIRS {"/var/tmp", "/usr/tmp", "/tmp", ".", NULL}
75 #define TEMPLATE "/usr/tmp/rtXXXXXX"
76 #define TEMPLEN 17
77 #define ULIBVAR "RAYPATH"
78 #ifndef DEFPATH
79 #define DEFPATH ":/usr/local/lib/ray"
80 #endif
81 #define fixargv0(a0) (a0)
82
83 #endif
84 #endif
85
86 #ifndef ISDIRSEP
87 #define ISDIRSEP(c) ((c)==DIRSEP)
88 #endif
89 #ifndef CASEDIRSEP
90 #define CASEDIRSEP case DIRSEP
91 #endif
92
93 extern char *mktemp(), *getenv();
94
95 #ifdef BSD
96 extern char *getwd();
97 #else
98 extern char *getcwd();
99 #define getwd(p) getcwd(p, sizeof(p))
100 #endif
101
102
103 /* Find a writeable directory for temporary files */
104 /* If s is NULL, we return a static string */
105 extern char *temp_directory(char *s, size_t len);
106
107 /* Compose a *currently* unique name within a temporary directory */
108 /* If s is NULL, we return a static string */
109 /* If templ is NULL, we take our default template */
110 /* WARNING: On Windows, there's a maximum of 27 unique names within
111 one process for the same template. */
112 extern char *temp_filename(char *s, size_t len, char *templ);
113
114 /* Same as above, but also open the file and return the descriptor */
115 /* This one is supposed to protect against race conditions on unix */
116 /* WARNING: On Windows, there's no protection against race conditions */
117 extern int temp_file(char *s, size_t len, char *templ);
118
119 /* Concatenate two strings, leaving exactly one DIRSEP in between */
120 extern char *append_filepath(char *s1, char *s2, size_t len);
121
122
123 #ifdef __cplusplus
124 }
125 #endif
126 #endif /* _RAD_PATHS_H_ */
127