/* Removes leading and/or trailing whitespaces Copyright (C) 2006 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; see the file COPYING. If not, write to the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* Written by Davide Angelocola */ #ifdef HAVE_CONFIG_H # include #endif #if HAVE_MBRTOWC # include # include "mbchar.h" # include "mbiter.h" # include "mbuiter.h" /* FIXME: for MB_CUR_MAX */ #else # include #endif #include "xalloc.h" #include "trim.h" char * trim2(const char *s, int how) { char *d; d = strdup(s); if (!d) xalloc_die(); #if HAVE_MBRTOWC if (MB_CUR_MAX > 1) { mbi_iterator_t i; /* Trim leading whitespaces. */ if (how != TRIM_TRAILING) { mbi_init (i, d, strlen (d)); for (; mbi_avail (i) && mb_isspace (mbi_cur (i)); mbi_advance (i)) ; memmove (d, mbi_cur_ptr (i), strlen (mbi_cur_ptr (i)) + 1); } /* Trim trailing whitespaces. */ if (how != TRIM_LEADING) { int state = 0; char *r; mbi_init (i, d, strlen (d)); for (; mbi_avail (i); mbi_advance (i)) { if (state == 0 && mb_isspace (mbi_cur (i))) { state = 0; continue; } if (state == 0 && !mb_isspace (mbi_cur (i))) { state = 1; continue; } if (state == 1 && !mb_isspace (mbi_cur (i))) { state = 1; continue; } if (state == 1 && mb_isspace (mbi_cur (i))) { state = 2; r = (char *) mbi_cur_ptr (i); } else if (state == 2 && mb_isspace (mbi_cur (i))) { state = 2; } else { state = 1; } } if (state == 2) *r = '\0'; } } else #endif /* HAVE_MBRTOWC */ { char *p; /* Trim leading whitespaces. */ if (how != TRIM_TRAILING) { for (p = d; *p && isspace (*p); p++) ; memmove (d, p, strlen (p) + 1); } /* Trim trailing whitespaces. */ if (how != TRIM_LEADING) { for (p = d + strlen (d) - 1; p >= d && isspace (*p); p--) *p = '\0'; } } return d; }