diff options
Diffstat (limited to 'libmisc/quote.c')
| -rw-r--r-- | libmisc/quote.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libmisc/quote.c b/libmisc/quote.c new file mode 100644 index 0000000..4fb7035 --- /dev/null +++ b/libmisc/quote.c @@ -0,0 +1,57 @@ +/* + File: quote.c + + Copyright (C) 2003 Andreas Gruenbacher <a.gruenbacher@bestbits.at> + + This program is free software; you can redistribute it and/or modify it under + the terms of the GNU Lesser General Public License as published by the + Free Software Foundation; either version 2.1 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 Lesser General Public + License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> +#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; +} |