Range* Range_parse(char *str) {
Range* self = Range_new(0, 0x10000);
if(strlen(str) == 0) {
return self;
}
char *start = str;
char *end = strstr(str, "-");
if(end != NULL) {
end++;
}
while(isspace((int)start[0])) start++;
if(strlen(start) > 0 && start[0] != '-') {
self->start = (int) strtol(start, NULL, 0);
}
if(end == NULL) {
self->end = -1;
}
else {
while(isspace((int)end[0])) end++;
if(strlen(end) > 0) {
self->end = (int) strtol(end, NULL, 0);
}
}
return self;
}
Range* Range_new_from_int(int range) {
int start = ((unsigned int) range) >> 16;
int end = range & 0xffff;
if(end == 0) end = 0x10000;
return Range_new(start, end);
}
static Range *doDiff( Range *r1, Range *r2 )
{
Range *r, *s, **rP = &r;
for( ; r1; r1 = r1->next ) {
uint lb = r1->lb;
for( ; r2 && r2->ub <= r1->lb; r2 = r2->next ) ;
for( ; r2 && r2->lb < r1->ub; r2 = r2->next ) {
if( lb < r2->lb ) {
*rP = s = Range_new( lb, r2->lb );
rP = &s->next;
}
if( (lb = r2->ub) >= r1->ub ) {
goto noMore;
}
}
*rP = s = Range_new( lb, r1->ub );
rP = &s->next;
noMore: ;
}
*rP = NULL;
return r;
}
static Range *getRange( SubStr *s )
{
uchar lb = unescape( s ), ub;
if( s->len < 2 || *s->str != '-' ) {
ub = lb;
} else {
s->len--; s->str++;
ub = unescape( s );
if( ub < lb ) {
uchar tmp;
tmp = lb; lb = ub; ub = tmp;
}
}
return( Range_new( lb, ub + 1 ) );
}
static Range *Range_new_copy( Range *r )
{
return( Range_new( r->lb, r->ub ) );
}
static RegExp *matchChar( uint c )
{
return( RegExp_new_MatchOp( Range_new( c, c + 1 ) ) );
}
