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Re: SCM to C string

From: Christopher Cramer
Subject: Re: SCM to C string
Date: Thu, 20 Jun 2002 17:04:54 -0500
User-agent: Mutt/1.2.5i

On Thu, Jun 20, 2002 at 04:39:21PM -0400, Viktor Pavlenko wrote:
> My program parses a scheme config file. If configuration is not valid
> from the application point of view (but is a valid scheme expression)
> I signal error. What I would like to do is to dump the offending SCM
> object to C-style string so that I can display it as debugging
> information.
> For instance I'd like convert SCM object which contains '("a" 1) into
> C string "(\"a\" 1)".

char *objtostr(SCM object)
        char *str;
        size_t len;
        SCM s_str = scm_object_to_string(object, SCM_UNDEFINED);
        len = SCM_STRING_LENGTH(s_str);
        str = malloc(len + 1);
        if (!str) abort();
        memcpy(str, SCM_STRING_CHARS(s_str), len);
        str[len] = '\0';
        return str;

I haven't tested this, so maybe there are typos or something, but it
should give you the general idea.

Christopher Cramer <address@hidden> <>
On résiste à l'invasion des armées; on ne résiste pas à l'invasion
des idées.  -- Victor Hugo

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