1 /*
2  * ngIRCd -- The Next Generation IRC Daemon
3  * Copyright (c)2001-2005 Alexander Barton (alex@barton.de)
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  * Please read the file COPYING, README and AUTHORS for more information.
10  *
11  * Tool functions
12  */
13 
14 
15 #include "portab.h"
16 
17 static char UNUSED id[] = "$Id: tool.c,v 1.6 2006/04/09 12:53:07 alex Exp $";
18 
19 #include "imp.h"
20 #include <assert.h>
21 #include <ctype.h>
22 #include <stdio.h>
23 #include <string.h>
24 
25 #include "exp.h"
26 #include "tool.h"
27 
28 
29 /**
30  * Removes all leading and trailing whitespaces of a string.
31  * @param String The string to remove whitespaces from.
32  */
33 GLOBAL void
34 ngt_TrimStr(char *String)
35 {
36 	char *start, *end;
37 
38 	assert(String != NULL);
39 
40 	start = String;
41 
42 	/* Remove whitespaces at the beginning of the string ... */
43 	while (*start == ' ' || *start == '\t' ||
44 	       *start == '\n' || *start == '\r')
45 		start++;
46 
47 	if (!*start) {
48 		*String = '\0';
49 		return;
50 	}
51 
52 	/* ... and at the end: */
53 	end = strchr(start, '\0');
54 	end--;
55 	while ((*end == ' ' || *end == '\t' || *end == '\n' || *end == '\r')
56 	       && end >= start)
57 		end--;
58 
59 	/* New trailing NULL byte */
60 	*(++end) = '\0';
61 
62 	memmove(String, start, (size_t)(end - start)+1);
63 } /* ngt_TrimStr */
64 
65 
66 GLOBAL char *
67 ngt_LowerStr( char *String )
68 {
69 	/* String in Kleinbuchstaben konvertieren. Der uebergebene
70 	 * Speicherbereich wird durch das Ergebnis ersetzt, zusaetzlich
71 	 * wird dieser auch als Pointer geliefert. */
72 
73 	char *ptr;
74 
75 	assert( String != NULL );
76 
77 	/* Zeichen konvertieren */
78 	ptr = String;
79 	while( *ptr )
80 	{
81 		*ptr = tolower( *ptr );
82 		ptr++;
83 	}
84 	
85 	return String;
86 } /* ngt_LowerStr */
87 
88 
89 GLOBAL void
90 ngt_TrimLastChr( char *String, const char Chr)
91 {
92 	/* If last character in the string matches Chr, remove it.
93 	 * Empty strings are handled correctly. */
94 
95         unsigned int len;
96 
97 	assert( String != NULL );
98 
99 	len = strlen( String );
100 	if( len == 0 ) return;
101 
102 	len--;
103 
104 	if( String[len] == Chr ) String[len] = '\0';
105 } /* ngt_TrimLastChr */
106 
107 
108 /* -eof- */