/* File: quote.c Copyright (C) 2003 Andreas Gruenbacher This program is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include "misc.h" const char *quote(const char *str) { static char *quoted_str; static size_t quoted_str_len; const unsigned char *s; char *q; size_t nonpr; if (!str) return str; for (nonpr = 0, s = (unsigned char *)str; *s != '\0'; s++) if (!isprint(*s) || isspace(*s) || *s == '\\' || *s == '=') nonpr++; if (nonpr == 0) return str; if (high_water_alloc((void **)"ed_str, "ed_str_len, (s - (unsigned char *)str) + nonpr * 3 + 1)) return NULL; for (s = (unsigned char *)str, q = quoted_str; *s != '\0'; s++) { if (!isprint(*s) || isspace(*s) || *s == '\\' || *s == '=') { *q++ = '\\'; *q++ = '0' + ((*s >> 6) ); *q++ = '0' + ((*s >> 3) & 7); *q++ = '0' + ((*s ) & 7); } else *q++ = *s; } *q++ = '\0'; return quoted_str; }