11 |
} |
} |
12 |
} |
} |
13 |
|
|
14 |
|
void trim(char ** string) { |
15 |
|
|
16 |
|
// string length and loop variable |
17 |
|
int string_length, i; |
18 |
|
|
19 |
|
// contains current character at string position i |
20 |
|
char current_char[2]; |
21 |
|
|
22 |
|
// pointers to begin end tail of new (stripped) string |
23 |
|
char * begin; |
24 |
|
char * tail; |
25 |
|
|
26 |
|
// prepare to be used with "strcmp" (comparison string should be terminated properly) |
27 |
|
current_char[1] = '\0'; |
28 |
|
|
29 |
|
|
30 |
|
/***************************** |
31 |
|
* 1. strip leading spaces |
32 |
|
**/ |
33 |
|
begin = *string; |
34 |
|
string_length = strlen(*string); |
35 |
|
|
36 |
|
// loop through all string characters (from left to right) |
37 |
|
for (i = 0; i < string_length; i++) { |
38 |
|
|
39 |
|
// get character at position i |
40 |
|
current_char[0] = *(*string + i); |
41 |
|
|
42 |
|
// is it a space? then increase pointer to begin of "new" string |
43 |
|
if (strcmp(current_char, " ") == 0) { |
44 |
|
begin++; |
45 |
|
} else { |
46 |
|
break; |
47 |
|
} |
48 |
|
} |
49 |
|
*string = begin; |
50 |
|
|
51 |
|
|
52 |
|
/***************************** |
53 |
|
* 2. strip trailing spaces |
54 |
|
**/ |
55 |
|
|
56 |
|
// calculate new string length |
57 |
|
string_length = strlen(*string); |
58 |
|
|
59 |
|
// loop through all string characters (from right to left) |
60 |
|
for (i = 0; i < string_length - 1; i++) { |
61 |
|
|
62 |
|
// get character at position string_length - i |
63 |
|
tail = *string + string_length - 1 - i; |
64 |
|
current_char[0] = *tail; |
65 |
|
|
66 |
|
// is it a space? then set null-byte to indicate end of "new" string at current position |
67 |
|
if (strcmp(current_char, " ") == 0) { |
68 |
|
*tail = '\0'; |
69 |
|
} else { |
70 |
|
break; |
71 |
|
} |
72 |
|
} |
73 |
|
|
74 |
|
} |
75 |
|
|
76 |
|
|
77 |
// checks for errors and writes its message to stderr |
// checks for errors and writes its message to stderr |
78 |
BOOL check_alert_error(const char * error_source) { |
BOOL check_alert_error(const char * error_source) { |
79 |
DWORD dwError = GetLastError(); |
DWORD dwError = GetLastError(); |