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	joko	1.4	/* $Id: utils_misc.c,v 1.3 2006/06/16 19:39:07 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	1.4	// strip leading and trailing whitespace
15	joko	1.3	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	joko	1.4	// checks for error and writes its message to stderr
79	joko	1.1	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	joko	1.2	fprintf(stderr, "ERROR with '%s': %s (Code %i)\n", error_source, message, dwError);
100	joko	1.1	LocalFree(message);
101			}
102
103			return TRUE;
104
105			}
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