DeforaOS/utils
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This commit is contained in:
Pierre Pronchery 2005-08-27 21:00:14 +00:00
parent 6616bc4b1d
commit 8f2b158dc9
1 changed files with 151 additions and 0 deletions
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src/common.c Normal file
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/* common.c */
#ifdef COMMON_MODE
# include <ctype.h>
/* mode
* PRE *mask exists
* POST mode is converted a mask
* 1 an error happened */
static int _mode_alpha(char const * mode, mode_t * mask);
static int _mode_digit(char const * mode, mode_t * mask);
static int _mode(char const * mode, mode_t * mask)
/* FIXME need a way to tell whether to =, & or | the resulting mask */
{
if(*mode == '\0')
return 1;
if(_mode_digit(mode, mask) == 0)
return 0;
return _mode_alpha(mode, mask);
}
static int _mode_digit(char const * mode, mode_t * mask)
{
char const * p;
for(p = mode; isdigit(*p) && *p < '8'; p++);
if(*p == '\0')
{
*mask = strtol(mode, NULL, 8);
return 0;
}
return 1;
}
static int _symbolic_mode(char const ** mode);
static int _mode_alpha(char const * mode, mode_t * mask)
{
/* FIXME doesn't give any result */
return _symbolic_mode(&mode);
}
static void _clause(char const ** mode);
static int _symbolic_mode(char const ** mode)
/* clause { ',' clause } */
{
_clause(mode);
while(**mode == ',')
{
(*mode)++;
_clause(mode);
}
return **mode == '\0' ? 0 : 1;
}
static void _wholist(char const ** mode);
static void _actionlist(char const ** mode);
static void _clause(char const ** mode)
/* [wholist] actionlist */
{
char c = **mode;
if(c == 'u' || c == 'g' || c == 'o' || c == 'a')
_wholist(mode);
_actionlist(mode);
}
static void _who(char const ** mode);
static void _wholist(char const ** mode)
/* who { who } */
{
char c;
_who(mode);
for(c = ** mode; c == 'u' || c == 'g' || c == 'o' || c == 'a';
c = **mode)
_who(mode);
}
static void _who(char const ** mode)
/* 'u' | 'g' | 'o' | 'a' */
{
/* FIXME */
(*mode)++;
}
static void _action(char const ** mode);
static void _actionlist(char const ** mode)
/* action { action } */
{
char c;
for(c = **mode; c == '+' || c == '-' || c == '='; c = **mode)
_action(mode);
}
static void _op(char const ** mode);
static void _permlist(char const ** mode);
static void _permcopy(char const ** mode);
static void _action(char const ** mode)
/* op [(permlist | permcopy)] */
{
char c;
_op(mode);
for(c = **mode; c != '\0'; c = **mode)
{
if(c == 'u' || c == 'g' || c == 'o')
_permcopy(mode);
else if(c == 'r' || c == 'w' || c == 'x' || c == 'X' || c == 's'
|| c == 't')
_permlist(mode);
else
break;
}
}
static void _permcopy(char const ** mode)
/* 'u' | 'g' | 'o' */
{
/* FIXME */
(*mode)++;
}
static void _op(char const ** mode)
/* '+' | '-' | '=' */
{
/* FIXME */
(*mode)++;
}
static void _perm(char const ** mode);
static void _permlist(char const ** mode)
/* perm { perm } */
{
char c;
_perm(mode);
for(c = **mode; c == 'r' || c == 'w' || c == 'x' || c == 'X'
|| c == 's' || c == 't'; c = **mode)
_perm(mode);
}
static void _perm(char const ** mode)
/* 'r' | 'w' | 'x' | 'X' | 's' | 't' */
{
/* FIXME */
(*mode)++;
}
#endif /* COMMON_MODE */