Angus Leeming <[EMAIL PROTECTED]> writes:
| On Thursday 04 April 2002 12:01 pm, Lars Gullik Bjønnes wrote:
>> Angus Leeming <[EMAIL PROTECTED]> writes:
>> | where BoundingBox bb is set so:
>> |
>> | BoundingBox::BoundingBox(string const & bb)
>> | {
>> | if (bb.empty())
>> | return;
>> |
>> | string tmp1;
>> | string tmp2 = split(bb, tmp1, ' ');
>> | if (!isValidLength(tmp1))
>> | return;
>> |
>> | LyXLength const length_xl(tmp1);
>> |
>> | tmp2 = split(tmp2, tmp1, ' ');
>> | if (!isValidLength(tmp1))
>> | return;
>> |
>> | LyXLength const length_yb(tmp1);
>> |
>> | tmp2 = split(tmp2, tmp1, ' ');
>> | if (!isValidLength(tmp1) || !isValidLength(tmp2))
>> | return;
>>
>> Why isn't a regex used instead of this manuel parsing of the bb
>> string?
>
| Sorry, you've lost me. What good would that be? Perhaps some sample code? I
| learn best through examples.
First you decide what the form om a valid bb string is:
number space number
"([[:digit:]]+) ([[:digit]]+)"
then a match function will return true if the bb string mathes the
regexp. a match object will have
match[0] = the whole string that matched
match[1] = the contents of the first sub-match
match[2] = the contents of the first sub-match
regex rex("([[:digit:]]+) ([[:digit]])");
if (match(rex, bb)) {
tmp1 = match[1];
tmp2 = match[2];
// check for validy (is this really needed?)
...
// assign to length objects...
LyXLength const length_xl(tmp1);
...
}
kindo stuff.
--
Lgb
