Re: [Csnd-dev] [EXTERNAL] [Csnd-dev] Spaces in csoundSetOption

I don’t think this will work on the command-line

csound -odac:Built-in Audio 

but this will 

csound -odac:"Built-in Audio" 

so you will need to quote your strings if there are spaces in them. Previously with a single option this wasn’t needed
because it was taken as a one full option. However, to get more than one option, I have to tokenise in the form
expected by Csound.

I have added support for strings to the PR. So you can now do 

res = csoundSetOption(csound, "-odac:\"Built-in Audio\"”);

========================
Prof. Victor Lazzarini
Maynooth University
Ireland

> On 9 Jan 2025, at 13:26, Eduardo Moguillansky <[email protected]> wrote:
> 
> The problem was with calls of the form
> 
> res = csoundSetOption(csound, "-odac:Built-in Audio");
> 
> or similar, which are common in linux systems running pipewire. I see similar problems with midi devices with spaces. 
> 
> On Thu, Jan 9, 2025 at 12:29 PM vlz <[email protected]> wrote:
> Multiple whitespaces are now properly accounted for in #2078.
> 
> > On 9 Jan 2025, at 10:12, vlz <[email protected]> wrote:
> > 
> > I checked and this code works
> > 
> > res = csoundSetOption(csound, "-o dac -m 6");
> > 
> > so you can have spaces between the arguments. There is a problem with more than a single space, which I
> > can look into.
> > 
> >> On 9 Jan 2025, at 09:55, vlz <[email protected]> wrote:
> >> 
> >> *Warning*
> >> This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.
> >> I wrote this new code, because the 6.x version was problematic. I can look into improving it. 
> >> 
> >> Prof. Victor Lazzarini 
> >> Maynooth University
> >> Ireland
> >> 
> >>> On 9 Jan 2025, at 09:17, Eduardo Moguillansky <[email protected]> wrote:
> >>> 
> >>>  Hi, 
> >>> 
> >>> Directly using the API in c (csound 7) I don't seem to be able to set an option which includes a space. In particular, setting the -o or --output option with a device which includes a space does not seem to work in any case. Looking at the source code it seems that a very naive string splitting code was added to csound 7. 
> >>> 
> >>> csound 6
> >>> 
> >>> PUBLIC int csoundSetOption(CSOUND *csound, const char *option){
> >>>    /* if already compiled and running, return */
> >>>    if (csound->engineStatus & CS_STATE_COMP) return 1;
> >>>    else {
> >>>    const char *args[2] = {"csound", option};
> >>>    csound->info_message_request = 1;
> >>>    return (argdecode(csound, 1, args) ? 0 : 1);
> >>>    }
> >>> }
> >>> 
> >>> csound 7
> >>> 
> >>> /* count whitespaces */
> >>>    while (*sp++ != '\0') {
> >>>      if (*sp == ' ') {
> >>>        cnt++;
> >>>        *sp = '\0';
> >>>        sp++;
> >>>      }
> >>>    }
> >>>    args = (char **)mcalloc(csound, sizeof(char *) * (cnt + 2));
> >>>    args[0] = "csound";
> >>>    args[1] = sp = options;
> >>>    cnt = 1;
> >>>    /* split into separate args */
> >>>    while (*opt) {
> >>>      if (*opt == ' ') {
> >>>        args[++cnt] = sp + 1;
> >>>      }
> >>>      sp++;
> >>>      opt++;
> >>>    }
> >>> 
> >>>    ret = argdecode(csound, cnt, (const char **)args);
> >>>    mfree(csound, args);
> >>>    mfree(csound, options);
> >>> 
> >>> I don't know the rationale behind this inclusion but I think that at least some form of escaping or quotation should be added to the splitting. For me the actual solution would be to remove the splitting at the API level.
> >>> 
> >>> cheers
> >>> Eduardo