Re: [Csnd] file exist opcode?

Date	2012-02-14 16:35
From	"Art Hunkins"
Subject	Re: [Csnd] file exist opcode?
	Joachim, I cannot tell if your suggestion will work on Windows or not. Csound 5.06, which I happen to need to use, does include the system_i opcode. However, on Windows, ires always returns a value of 1. This happens: 1) whether the file exists or not; 2) regardless of what the return value options are (the value[s?] following "then"). So, is this a platform-related problem? If so, is perhaps there another way of formatting the filename that would work for Windows? Art Hunkins ----- Original Message ----- From: "joachim heintz" To: Sent: Tuesday, February 14, 2012 1:52 AM Subject: Re: [Csnd] file exist opcode? > hi art - > this works for linux (ires=0: file noes not exist), and should for osx. > but on windows? > perhaps it helps anyways - > joachim > > instr 1 > ires system_i 1, "if [ -f test.csd ] ; then 1 ; fi" > print ires > endin > > Am 14.02.2012 00:37, schrieb Art Hunkins: >> Thanks to all for the suggestions. >> >> Unfortunately, I cannot count on python always being available. >> >> Can anyone suggest a simple solution using the system opcode - one that >> perhaps parallels "os.path.exists"? >> >> Art Hunkins >> >> ----- Original Message ----- >> From: Andres Cabrera >> To: csound@lists.bath.ac.uk >> Sent: Monday, February 13, 2012 4:42 PM >> Subject: Re: [Csnd] file exist opcode? >> >> Hi, >> >> Yes, I think using os.path.exists should work on all platforms. >> >> Cheers, >> Andrés >> >> On Mon, Feb 13, 2012 at 9:33 PM, joachim heintz > > wrote: >> >> if the python opcodes can be used, this should be possible. >> can they? >> joachim >> >> Am 13.02.2012 21:51, schrieb Art Hunkins: >> > Do you perhaps have a simple, cross-platform call to the >> system opcode >> > that would return whether or not "soundin.1" was present in >> the current >> > directory? >> > >> > (I'm looking for something applicable back to Csound 5.06; >> filevalid was >> > only introduced in 5.13. Or is there a simple UDO version of >> filevalid I >> > might appropriate?) >> > >> > Art Hunkins >> > >> > ----- Original Message ----- >> > From: peiman khosravi > > >> > To: csound@lists.bath.ac.uk >> > > >> > Sent: Monday, February 13, 2012 8:36 AM >> > Subject: Re: [Csnd] file exist opcode? >> > >> > maybe you can use the system opcode for this? >> > >> > P >> > >> > On 13 February 2012 13:33, Art Hunkins > >> > >> >> wrote: >> > >> > I feel sure there must be an opcode that returns a >> value >> > indicating whether a specified file exists or not. I >> just cannot >> > find it. >> > >> > (Otherwise Csound crashes if you ask - via diskin or >> soundin - >> > for a file that doesn't exist. I need to avoid this >> possibility.) >> > >> > Art Hunkins >> > >> > >> > Send bugs reports to the Sourceforge bug tracker >> > >> > >> https://sourceforge.net/__tracker/?group_id=81968&atid=__564599 >> >> > >> > > >> > Discussions of bugs and features can be posted here >> > To unsubscribe, send email sympa@lists.bath.ac.uk >> >> > > > with body "unsubscribe csound" >> > >> > >> >> >> Send bugs reports to the Sourceforge bug tracker >> >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk >> with body "unsubscribe csound" >> >> > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > csound" >

Date	2012-02-14 17:17
From	Alan Fitch
Subject	Re: [Csnd] file exist opcode?
	On 14/02/2012 16:35, Art Hunkins wrote: > Joachim, > > I cannot tell if your suggestion will work on Windows or not. > > Csound 5.06, which I happen to need to use, does include the system_i > opcode. However, on Windows, ires always returns a value of 1. > > This happens: > 1) whether the file exists or not; > 2) regardless of what the return value options are (the value[s?] > following "then"). > > So, is this a platform-related problem? > > If so, is perhaps there another way of formatting the filename that > would work for Windows? > Hi Art, the code in Joachim's example looks like bash script, which won't work on Windows. However this might work... ires system_i 1, "if not exist test.csd exit 0 else exit 1" I think the command in the "" needs to be made up of windows batch commands. "if exist" tests for a file's existence. Good luck... Alan P.S. Of course this code is Windows specific > Art Hunkins > > ----- Original Message ----- From: "joachim heintz" > To: > Sent: Tuesday, February 14, 2012 1:52 AM > Subject: Re: [Csnd] file exist opcode? > > >> hi art - >> this works for linux (ires=0: file noes not exist), and should for osx. >> but on windows? >> perhaps it helps anyways - >> joachim >> >> instr 1 >> ires system_i 1, "if [ -f test.csd ] ; then 1 ; fi" >> print ires >> endin >> >> Am 14.02.2012 00:37, schrieb Art Hunkins: >>> Thanks to all for the suggestions. >>> >>> Unfortunately, I cannot count on python always being available. >>> >>> Can anyone suggest a simple solution using the system opcode - one that >>> perhaps parallels "os.path.exists"? >>> >>> Art Hunkins >>> >>> ----- Original Message ----- >>> From: Andres Cabrera >>> To: csound@lists.bath.ac.uk >>> Sent: Monday, February 13, 2012 4:42 PM >>> Subject: Re: [Csnd] file exist opcode? >>> >>> Hi, >>> >>> Yes, I think using os.path.exists should work on all platforms. >>> >>> Cheers, >>> Andrés >>> >>> On Mon, Feb 13, 2012 at 9:33 PM, joachim heintz >>> >> > wrote: >>> >>> if the python opcodes can be used, this should be possible. >>> can they? >>> joachim >>> >>> Am 13.02.2012 21:51, schrieb Art Hunkins: >>> > Do you perhaps have a simple, cross-platform call to the >>> system opcode >>> > that would return whether or not "soundin.1" was present in >>> the current >>> > directory? >>> > >>> > (I'm looking for something applicable back to Csound 5.06; >>> filevalid was >>> > only introduced in 5.13. Or is there a simple UDO version of >>> filevalid I >>> > might appropriate?) >>> > >>> > Art Hunkins >>> > >>> > ----- Original Message ----- >>> > From: peiman khosravi >> > >>> > To: csound@lists.bath.ac.uk >>> >> > >>> > Sent: Monday, February 13, 2012 8:36 AM >>> > Subject: Re: [Csnd] file exist opcode? >>> > >>> > maybe you can use the system opcode for this? >>> > >>> > P >>> > >>> > On 13 February 2012 13:33, Art Hunkins >> >>> > >> wrote: >>> > >>> > I feel sure there must be an opcode that returns a value >>> > indicating whether a specified file exists or not. I >>> just cannot >>> > find it. >>> > >>> > (Otherwise Csound crashes if you ask - via diskin or >>> soundin - >>> > for a file that doesn't exist. I need to avoid this >>> possibility.) >>> > >>> > Art Hunkins >>> > >>> > >>> > Send bugs reports to the Sourceforge bug tracker >>> > >>> > >>> https://sourceforge.net/__tracker/?group_id=81968&atid=__564599 >>> >>> > >>> >> > >>> > Discussions of bugs and features can be posted here >>> > To unsubscribe, send email sympa@lists.bath.ac.uk >>> >>> > >> > with body "unsubscribe csound" >>> > >>> > >>> >>> >>> Send bugs reports to the Sourceforge bug tracker >>> >>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>> >>> Discussions of bugs and features can be posted here >>> To unsubscribe, send email sympa@lists.bath.ac.uk >>> with body "unsubscribe csound" >>> >>> >> >> >> Send bugs reports to the Sourceforge bug tracker >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk with body >> "unsubscribe csound" >> > > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body > "unsubscribe csound" > -- Alan Fitch