summaryrefslogtreecommitdiff
path: root/source3/iniparser/src/strlib.c
blob: f0d85aea580246991be353affe2657af49ce5d7b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211

/*-------------------------------------------------------------------------*/
/**
  @file		strlib.c
  @author	N. Devillard
  @date		Jan 2001
  @version	$Revision: 1.9 $
  @brief	Various string handling routines to complement the C lib.

  This modules adds a few complementary string routines usually missing
  in the standard C library.
*/
/*--------------------------------------------------------------------------*/

/*
	$Id: strlib.c,v 1.9 2006-09-27 11:04:11 ndevilla Exp $
	$Author: ndevilla $
	$Date: 2006-09-27 11:04:11 $
	$Revision: 1.9 $
*/

/*---------------------------------------------------------------------------
   								Includes
 ---------------------------------------------------------------------------*/

#include <string.h>
#include <ctype.h>

#include "strlib.h"

/*---------------------------------------------------------------------------
   							    Defines	
 ---------------------------------------------------------------------------*/
#define ASCIILINESZ	1024

/*---------------------------------------------------------------------------
  							Function codes
 ---------------------------------------------------------------------------*/


/*-------------------------------------------------------------------------*/
/**
  @brief	Convert a string to lowercase.
  @param	s	String to convert.
  @return	ptr to statically allocated string.

  This function returns a pointer to a statically allocated string
  containing a lowercased version of the input string. Do not free
  or modify the returned string! Since the returned string is statically
  allocated, it will be modified at each function call (not re-entrant).
 */
/*--------------------------------------------------------------------------*/

char * strlwc(const char * s)
{
    static char l[ASCIILINESZ+1];
    int i ;

    if (s==NULL) return NULL ;
    memset(l, 0, ASCIILINESZ+1);
    i=0 ;
    while (s[i] && i<ASCIILINESZ) {
        l[i] = (char)tolower((int)s[i]);
        i++ ;
    }
    l[ASCIILINESZ]=(char)0;
    return l ;
}



/*-------------------------------------------------------------------------*/
/**
  @brief	Convert a string to uppercase.
  @param	s	String to convert.
  @return	ptr to statically allocated string.

  This function returns a pointer to a statically allocated string
  containing an uppercased version of the input string. Do not free
  or modify the returned string! Since the returned string is statically
  allocated, it will be modified at each function call (not re-entrant).
 */
/*--------------------------------------------------------------------------*/

char * strupc(char * s)
{
    static char l[ASCIILINESZ+1];
    int i ;

    if (s==NULL) return NULL ;
    memset(l, 0, ASCIILINESZ+1);
    i=0 ;
    while (s[i] && i<ASCIILINESZ) {
        l[i] = (char)toupper((int)s[i]);
        i++ ;
    }
    l[ASCIILINESZ]=(char)0;
    return l ;
}



/*-------------------------------------------------------------------------*/
/**
  @brief	Skip blanks until the first non-blank character.
  @param	s	String to parse.
  @return	Pointer to char inside given string.

  This function returns a pointer to the first non-blank character in the
  given string.
 */
/*--------------------------------------------------------------------------*/

char * strskp(char * s)
{
    char * skip = s;
	if (s==NULL) return NULL ;
    while (isspace((int)*skip) && *skip) skip++;
    return skip ;
} 



/*-------------------------------------------------------------------------*/
/**
  @brief	Remove blanks at the end of a string.
  @param	s	String to parse.
  @return	ptr to statically allocated string.

  This function returns a pointer to a statically allocated string,
  which is identical to the input string, except that all blank
  characters at the end of the string have been removed.
  Do not free or modify the returned string! Since the returned string
  is statically allocated, it will be modified at each function call
  (not re-entrant).
 */
/*--------------------------------------------------------------------------*/

char * strcrop(char * s)
{
    static char l[ASCIILINESZ+1];
	char * last ;

    if (s==NULL) return NULL ;
    memset(l, 0, ASCIILINESZ+1);
	strcpy(l, s);
	last = l + strlen(l);
	while (last > l) {
		if (!isspace((int)*(last-1)))
			break ;
		last -- ;
	}
	*last = (char)0;
    return l ;
}



/*-------------------------------------------------------------------------*/
/**
  @brief	Remove blanks at the beginning and the end of a string.
  @param	s	String to parse.
  @return	ptr to statically allocated string.

  This function returns a pointer to a statically allocated string,
  which is identical to the input string, except that all blank
  characters at the end and the beg. of the string have been removed.
  Do not free or modify the returned string! Since the returned string
  is statically allocated, it will be modified at each function call
  (not re-entrant).
 */
/*--------------------------------------------------------------------------*/
char * strstrip(char * s)
{
    static char l[ASCIILINESZ+1];
	char * last ;
	
    if (s==NULL) return NULL ;
    
	while (isspace((int)*s) && *s) s++;
	
	memset(l, 0, ASCIILINESZ+1);
	strcpy(l, s);
	last = l + strlen(l);
	while (last > l) {
		if (!isspace((int)*(last-1)))
			break ;
		last -- ;
	}
	*last = (char)0;

	return (char*)l ;
}

/* Test code */
#ifdef TEST
int main(int argc, char * argv[])
{
	char * str ;

	str = "\t\tI'm a lumberkack and I'm OK      " ;
	printf("lowercase: [%s]\n", strlwc(str));
	printf("uppercase: [%s]\n", strupc(str));
	printf("skipped  : [%s]\n", strskp(str));
	printf("cropped  : [%s]\n", strcrop(str));
	printf("stripped : [%s]\n", strstrip(str));

	return 0 ;
}
#endif
/* vim: set ts=4 et sw=4 tw=75 */