GRASS GIS 7 Programmer's Manual  7.5.svn(2017)-r71785
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datetime/error.c
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1 /*
2  * Copyright (C) 1995. Bill Brown <brown@gis.uiuc.edu> & Michael Shapiro
3  *
4  * This program is free software under the GPL (>=v2)
5  * Read the file GPL.TXT coming with GRASS for details.
6  */
7 #include <string.h>
8 
9 
10 static int err_code = 0;
11 static char err_msg[1024];
12 
13 
14 /*!
15  * \brief
16  *
17  * record 'code' and 'msg' as
18  * error code/msg (in static variables)
19  * code==0 will clear the error (ie set msg=NULL)
20  * returns 'code' so that it can be used like:
21  \code
22  return datetime_error (-1, "bad date");
23  \endcode
24  *
25  * \param code
26  * \param msg
27  * \return int
28  */
29 
30 int datetime_error(int code, char *msg)
31 {
32  err_code = code;
33  *err_msg = 0;
34  if (code != 0 && msg)
35  strcpy(err_msg, msg); /* hope err_msg is big enough */
36 
37  return code;
38 }
39 
40 /*!
41  * \brief
42  *
43  * returns an error code
44  *
45  * \return int
46  */
47 
49 {
50  return err_code;
51 }
52 
53 /*!
54  * \brief
55  *
56  * returns an error message
57  *
58  * \return char *
59  */
60 
61 char *datetime_error_msg(void)
62 {
63  return err_msg;
64 }
65 
66 
67 /*!
68  * \brief
69  *
70  * clears error code and message
71  *
72  * \return void
73  */
74 
76 {
77  err_code = 0;
78  *err_msg = 0;
79 }
int datetime_error_code(void)
returns an error code
void datetime_clear_error(void)
clears error code and message
char * datetime_error_msg(void)
returns an error message
int datetime_error(int code, char *msg)
record &#39;code&#39; and &#39;msg&#39; as error code/msg (in static variables) code==0 will clear the error (ie set ...