1 /* Removes leading and/or trailing whitespaces
2 Copyright (C) 2006-2015 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Davide Angelocola <davide.angelocola@gmail.com> */
33 /* Use this to suppress gcc's "...may be used before initialized" warnings. */
35 # define IF_LINT(Code) Code
37 # define IF_LINT(Code) /* empty */
41 trim2 (const char *s
, int how
)
54 /* Trim leading whitespaces. */
55 if (how
!= TRIM_TRAILING
)
57 mbi_init (i
, d
, strlen (d
));
59 for (; mbi_avail (i
) && mb_isspace (mbi_cur (i
)); mbi_advance (i
))
62 memmove (d
, mbi_cur_ptr (i
), strlen (mbi_cur_ptr (i
)) + 1);
65 /* Trim trailing whitespaces. */
66 if (how
!= TRIM_LEADING
)
68 unsigned int state
= 0;
69 char *r
IF_LINT (= NULL
); /* used only while state = 2 */
71 mbi_init (i
, d
, strlen (d
));
73 for (; mbi_avail (i
); mbi_advance (i
))
75 if (state
== 0 && mb_isspace (mbi_cur (i
)))
78 if (state
== 0 && !mb_isspace (mbi_cur (i
)))
84 if (state
== 1 && !mb_isspace (mbi_cur (i
)))
87 if (state
== 1 && mb_isspace (mbi_cur (i
)))
90 r
= (char *) mbi_cur_ptr (i
);
92 else if (state
== 2 && mb_isspace (mbi_cur (i
)))
110 /* Trim leading whitespaces. */
111 if (how
!= TRIM_TRAILING
)
113 for (p
= d
; *p
&& isspace ((unsigned char) *p
); p
++)
116 memmove (d
, p
, strlen (p
) + 1);
119 /* Trim trailing whitespaces. */
120 if (how
!= TRIM_LEADING
)
122 for (p
= d
+ strlen (d
) - 1;
123 p
>= d
&& isspace ((unsigned char) *p
); p
--)