diff options
Diffstat (limited to 'gnulib/lib/getsubopt.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/getsubopt.c | 82 |
2 files changed, 82 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/getsubopt.c b/gnulib/lib/getsubopt.c new file mode 100644 index 0000000..ab74d03 --- /dev/null +++ b/gnulib/lib/getsubopt.c @@ -0,0 +1,82 @@ +/* Parse comma separated list into words. + Copyright (C) 1996-1997, 1999, 2004, 2007, 2009-2011 Free Software + Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + + 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 3 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#if !_LIBC +# include <config.h> +#endif + +#include <stdlib.h> +#include <string.h> + +#if !_LIBC +/* This code is written for inclusion in gnu-libc, and uses names in + the namespace reserved for libc. If we're compiling in gnulib, + define those names to be the normal ones instead. */ +# undef __strchrnul +# define __strchrnul strchrnul +#endif + +/* Parse comma separated suboption from *OPTIONP and match against + strings in TOKENS. If found return index and set *VALUEP to + optional value introduced by an equal sign. If the suboption is + not part of TOKENS return in *VALUEP beginning of unknown + suboption. On exit *OPTIONP is set to the beginning of the next + token or at the terminating NUL character. */ +int +getsubopt (char **optionp, char *const *tokens, char **valuep) +{ + char *endp, *vstart; + int cnt; + + if (**optionp == '\0') + return -1; + + /* Find end of next token. */ + endp = __strchrnul (*optionp, ','); + + /* Find start of value. */ + vstart = memchr (*optionp, '=', endp - *optionp); + if (vstart == NULL) + vstart = endp; + + /* Try to match the characters between *OPTIONP and VSTART against + one of the TOKENS. */ + for (cnt = 0; tokens[cnt] != NULL; ++cnt) + if (strncmp (*optionp, tokens[cnt], vstart - *optionp) == 0 + && tokens[cnt][vstart - *optionp] == '\0') + { + /* We found the current option in TOKENS. */ + *valuep = vstart != endp ? vstart + 1 : NULL; + + if (*endp != '\0') + *endp++ = '\0'; + *optionp = endp; + + return cnt; + } + + /* The current suboption does not match any option. */ + *valuep = *optionp; + + if (*endp != '\0') + *endp++ = '\0'; + *optionp = endp; + + return -1; +} |