Re: How to encode text into html format

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Sun, 1 Jun 2008 13:45:29 -0700 (PDT)
Message-ID:
<7358b115-34b1-4aab-b132-8fa59dcc99cf@s50g2000hsb.googlegroups.com>
On Jun 1, 8:11 pm, Kai-Uwe Bux <jkherci...@gmx.net> wrote:

Fred Yu wrote:

I want to encode input text into html format such as replace "<" with
"&lt", replace "&" with "&amp".
Could you give me some ideas? Thanks.


Containers: std::map< char, std::string >
Iterators: std::istream_iterator, std::ostream_iterator
Algorithms: std::transform


Agreed for the first (although it may be overkill---in this
particular case, I think I'd go with a simple switch).

No real need for the second; just use istream::get() and
ostream::put() (or operator<< in some cases).

As to the third: how? You're replacing a single character with
a sequence of characters, and transform does a one to one (which
in practice makes it of fairly limited utility---although I've
used it with a vector<string>, ostream_iterator, and as string
transformer class that I've written, which works something like
$(patsubst...) in GNU make).

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