03/win32/utils_misc.c

/* $Id: utils_misc.c,v 1.3 2006/06/16 19:39:07 joko Exp $ */

#include <stdio.h>
#include <windows.h>

// if last char is newline, "strip" it
void chomp(char * string) {
  int string_length = strlen(string);
  if (string[string_length-1] == '\n') {
    string[string_length-1] = '\0';
  }
}

// strip leading and trailing whitespace
void trim(char ** string) {
  
  // string length and loop variable
  int string_length, i;
  
  // contains current character at string position i
  char current_char[2];
  
  // pointers to begin end tail of new (stripped) string
  char * begin;
  char * tail;
  
  // prepare to be used with "strcmp" (comparison string should be terminated properly)
  current_char[1] = '\0';
  
  
  /*****************************
   *  1. strip leading spaces
   **/
  begin = *string;
  string_length = strlen(*string);
  
  // loop through all string characters (from left to right)
  for (i = 0; i < string_length; i++) {
    
    // get character at position i
    current_char[0] = *(*string + i);
    
    // is it a space? then increase pointer to begin of "new" string
    if (strcmp(current_char, " ") == 0) {
      begin++;
    } else {
      break;
    }
  }
  *string = begin;
  
  
  /*****************************
   *  2. strip trailing spaces
   **/
  
  // calculate new string length
  string_length = strlen(*string);
  
  // loop through all string characters (from right to left)
  for (i = 0; i < string_length - 1; i++) {
    
    // get character at position string_length - i
    tail = *string + string_length - 1 - i;
    current_char[0] = *tail;
    
    // is it a space? then set null-byte to indicate end of "new" string at current position
    if (strcmp(current_char, " ") == 0) {
      *tail = '\0';
    } else {
      break;
    }
  }
  
}


// checks for error and writes its message to stderr
BOOL check_alert_error(const char * error_source) {
  DWORD dwError = GetLastError();

  HLOCAL message = NULL;
  BOOL fOk;
  
  if (dwError == 0) 
    return FALSE;

  fOk = FormatMessage(
    FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
    NULL,
    dwError,
    MAKELANGID(LANG_NEUTRAL, SUBLANG_SYS_DEFAULT),
    (PTSTR)&message,
    0,
    NULL
  );

  if (message != NULL) {
    fprintf(stderr, "ERROR with '%s': %s (Code %i)\n", error_source, message, dwError);
    LocalFree(message);
  }
  
  return TRUE;
  
}
1	/* $Id: utils_misc.c,v 1.3 2006/06/16 19:39:07 joko Exp $ */
2
3	#include <stdio.h>
4	#include <windows.h>
5
6	// if last char is newline, "strip" it
7	void chomp(char * string) {
8	int string_length = strlen(string);
9	if (string[string_length-1] == '\n') {
10	string[string_length-1] = '\0';
11	}
12	}
13
14	// strip leading and trailing whitespace
15	void trim(char ** string) {
16
17	// string length and loop variable
18	int string_length, i;
19
20	// contains current character at string position i
21	char current_char[2];
22
23	// pointers to begin end tail of new (stripped) string
24	char * begin;
25	char * tail;
26
27	// prepare to be used with "strcmp" (comparison string should be terminated properly)
28	current_char[1] = '\0';
29
30
31	/*****************************
32	* 1. strip leading spaces
33	**/
34	begin = *string;
35	string_length = strlen(*string);
36
37	// loop through all string characters (from left to right)
38	for (i = 0; i < string_length; i++) {
39
40	// get character at position i
41	current_char[0] = (string + i);
42
43	// is it a space? then increase pointer to begin of "new" string
44	if (strcmp(current_char, " ") == 0) {
45	begin++;
46	} else {
47	break;
48	}
49	}
50	*string = begin;
51
52
53	/*****************************
54	* 2. strip trailing spaces
55	**/
56
57	// calculate new string length
58	string_length = strlen(*string);
59
60	// loop through all string characters (from right to left)
61	for (i = 0; i < string_length - 1; i++) {
62
63	// get character at position string_length - i
64	tail = *string + string_length - 1 - i;
65	current_char[0] = *tail;
66
67	// is it a space? then set null-byte to indicate end of "new" string at current position
68	if (strcmp(current_char, " ") == 0) {
69	*tail = '\0';
70	} else {
71	break;
72	}
73	}
74
75	}
76
77
78	// checks for error and writes its message to stderr
79	BOOL check_alert_error(const char * error_source) {
80	DWORD dwError = GetLastError();
81
82	HLOCAL message = NULL;
83	BOOL fOk;
84
85	if (dwError == 0)
86	return FALSE;
87
88	fOk = FormatMessage(
89	FORMAT_MESSAGE_FROM_SYSTEM \| FORMAT_MESSAGE_ALLOCATE_BUFFER,
90	NULL,
91	dwError,
92	MAKELANGID(LANG_NEUTRAL, SUBLANG_SYS_DEFAULT),
93	(PTSTR)&message,
94	0,
95	NULL
96	);
97
98	if (message != NULL) {
99	fprintf(stderr, "ERROR with '%s': %s (Code %i)\n", error_source, message, dwError);
100	LocalFree(message);
101	}
102
103	return TRUE;
104
105	}
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