03/win32/utils_misc.c

/* $Id: utils_misc.c,v 1.2 2006/06/16 00:06:11 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';
  }
}

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 errors 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 1.2 2006/06/16 00:06:11 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	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
78	BOOL check_alert_error(const char * error_source) {
79	DWORD dwError = GetLastError();
80
81	HLOCAL message = NULL;
82	BOOL fOk;
83
84	if (dwError == 0)
85	return FALSE;
86
87	fOk = FormatMessage(
88	FORMAT_MESSAGE_FROM_SYSTEM \| FORMAT_MESSAGE_ALLOCATE_BUFFER,
89	NULL,
90	dwError,
91	MAKELANGID(LANG_NEUTRAL, SUBLANG_SYS_DEFAULT),
92	(PTSTR)&message,
93	0,
94	NULL
95	);
96
97	if (message != NULL) {
98	fprintf(stderr, "ERROR with '%s': %s (Code %i)\n", error_source, message, dwError);
99	LocalFree(message);
100	}
101
102	return TRUE;
103
104	}
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