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	joko	1.3	/* $Id: utils_misc.c,v 1.2 2006/06/16 00:06:11 joko Exp $ */
2	joko	1.1
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	joko	1.3	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	joko	1.1	// 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	joko	1.2	fprintf(stderr, "ERROR with '%s': %s (Code %i)\n", error_source, message, dwError);
99	joko	1.1	LocalFree(message);
100			}
101
102			return TRUE;
103
104			}
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