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Add getsubopt implementation for Android
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
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/* | ||
* Android c-library does not have getsubopt, | ||
* so code lifted from uClibc | ||
* http://git.uclibc.org/uClibc/tree/libc/unistd/getsubopt.c | ||
*/ | ||
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/* Parse comma separate list into words. | ||
Copyright (C) 1996, 1997, 1999, 2004 Free Software Foundation, Inc. | ||
This file is part of the GNU C Library. | ||
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. | ||
The GNU C Library 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. | ||
The GNU C Library 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 the GNU C Library; if not, write to the Free | ||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
02111-1307 USA. */ | ||
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#include <stdlib.h> | ||
#include <string.h> | ||
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char *strchrnul(const char *s, int c) | ||
{ | ||
char *result; | ||
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result = strchr( s, c ); | ||
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if( !result ) | ||
{ | ||
result = (char *)s + strlen( s ); | ||
} | ||
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return( result ); | ||
} | ||
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/* 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; | ||
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if (**optionp == '\0') | ||
return -1; | ||
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/* Find end of next token. */ | ||
endp = strchrnul (*optionp, ','); | ||
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/* Find start of value. */ | ||
vstart = memchr (*optionp, '=', endp - *optionp); | ||
if (vstart == NULL) | ||
vstart = endp; | ||
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/* 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; | ||
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if (*endp != '\0') | ||
*endp++ = '\0'; | ||
*optionp = endp; | ||
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return cnt; | ||
} | ||
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/* The current suboption does not match any option. */ | ||
*valuep = *optionp; | ||
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if (*endp != '\0') | ||
*endp++ = '\0'; | ||
*optionp = endp; | ||
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return -1; | ||
} |
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#ifndef _getsubopt_h | ||
#define _getsubopt_h | ||
int getsubopt (char **optionp, char *const *tokens, char **valuep); | ||
#endif |
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