1 /* Removes leading and/or trailing whitespaces
2 Copyright (C) 2006-2011 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--)