Re: Conversion problems using Grace files
Angus Leeming wrote: > string const getFormatFromContents(string const & filename) > examines the file, and if it recognises the contents returns a string that is > the format name for those contents. You may think of those strings it returns > as extensions but really they aren't, they're format names. > > If this function returns an empty string, because it doesn't recognise the > contents, then we fall back on the extension. If the extension is defined in > the list of Formats, then return the appropriate format name. If it isn't > defined, then return an empty string because there's absolutely nothing we > can do with this file. I have in pref for example \format "pcx" "pcx" "PCX" "" \converter "pcx" "eps" "convert $$i eps:$$o" "" and in my getExtFromContents a "return extension if unknown contents" than all works well with the present code when "pcx" is returned! Why do I need another method? Herbert -- http://www.lyx.org/help/
Re: Conversion problems using Grace files
On Monday 18 February 2002 11:07 am, Herbert Voss wrote: > > Also, if you can't determine the format name from either > > getFORMATfromContents or from the list of currently available formats and > > their extensions, then you're screwed anyway. Best to just return string() > > and enable the rest of the code to say "No format defined!" > > no, than I have no way to handle this. A return type "user" > includes the possibilty to handle it by the user. ?? But if "user" is defined in the list of Formats, then it'll be discovered. If it isn't then we fail anyway. To explain that code snippet in words: string const getFormatFromContents(string const & filename) examines the file, and if it recognises the contents returns a string that is the format name for those contents. You may think of those strings it returns as extensions but really they aren't, they're format names. If this function returns an empty string, because it doesn't recognise the contents, then we fall back on the extension. If the extension is defined in the list of Formats, then return the appropriate format name. If it isn't defined, then return an empty string because there's absolutely nothing we can do with this file. See converter.h extern Formats formats; Angus
Re: Conversion problems using Grace files
On Mon, 18 Feb 2002, Angus Leeming wrote: > > this should be much more easier: > > > > instead of "user", I will return the file-extension, if present. > > Only when we can not detect a file type from the contents and > > have no extension than I return "user" > > Also, if you can't determine the format name from either > getFORMATfromContents or from the list of currently available formats and > their extensions, then you're screwed anyway. Best to just return string() > and enable the rest of the code to say "No format defined!" no, than I have no way to handle this. A return type "user" includes the possibilty to handle it by the user. Herbert
Re: Conversion problems using Grace files
On Mon, 18 Feb 2002, Angus Leeming wrote: > On Monday 18 February 2002 9:19 am, Herbert Voss wrote: > > On Mon, 18 Feb 2002, Angus Leeming wrote: > > > > > On Saturday 16 February 2002 5:31 pm, Herbert Voss wrote: > > > > I have no problem with > > > > > > > > \converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" > > > > > > > > Herbert > > > > > > Sure, Herbert, but it is still rather ugly, specifying user1, user2 etc. > If > > > Rob wants to define an agr format, then let's let him. I think that this > > > would do it: > > > > [...] > > > > this should be much more easier: > > > > instead of "user", I will return the file-extension, if present. > > Only when we can not detect a file type from the contents and > > have no extension than I return "user" > > > > Herbert > > Herbert, don't think "file extension", think "file format name". That's what > you're trying to determine. > > An example: files file.jpg, file.jpeg are both "jpg" files but have different > extensions. > > I know what you mean, but I may not in 6 months time! Let's be pedantic about > these things. sure, but this was the reason for the contents! When I can not detect it by contents I return the extension, so I don not return the format. Herbert
Re: Conversion problems using Grace files
On Monday 18 February 2002 9:19 am, Herbert Voss wrote: > On Mon, 18 Feb 2002, Angus Leeming wrote: > > > On Saturday 16 February 2002 5:31 pm, Herbert Voss wrote: > > > I have no problem with > > > > > > \converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" > > > > > > Herbert > > > > Sure, Herbert, but it is still rather ugly, specifying user1, user2 etc. If > > Rob wants to define an agr format, then let's let him. I think that this > > would do it: > > [...] > > this should be much more easier: > > instead of "user", I will return the file-extension, if present. > Only when we can not detect a file type from the contents and > have no extension than I return "user" Also, if you can't determine the format name from either getFORMATfromContents or from the list of currently available formats and their extensions, then you're screwed anyway. Best to just return string() and enable the rest of the code to say "No format defined!" Angus
Re: Conversion problems using Grace files
On Monday 18 February 2002 9:19 am, Herbert Voss wrote: > On Mon, 18 Feb 2002, Angus Leeming wrote: > > > On Saturday 16 February 2002 5:31 pm, Herbert Voss wrote: > > > I have no problem with > > > > > > \converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" > > > > > > Herbert > > > > Sure, Herbert, but it is still rather ugly, specifying user1, user2 etc. If > > Rob wants to define an agr format, then let's let him. I think that this > > would do it: > > [...] > > this should be much more easier: > > instead of "user", I will return the file-extension, if present. > Only when we can not detect a file type from the contents and > have no extension than I return "user" > > Herbert Herbert, don't think "file extension", think "file format name". That's what you're trying to determine. An example: files file.jpg, file.jpeg are both "jpg" files but have different extensions. I know what you mean, but I may not in 6 months time! Let's be pedantic about these things. Angus
Re: Conversion problems using Grace files
On Mon, 18 Feb 2002, Angus Leeming wrote: > On Saturday 16 February 2002 5:31 pm, Herbert Voss wrote: > > I have no problem with > > > > \converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" > > > > Herbert > > Sure, Herbert, but it is still rather ugly, specifying user1, user2 etc. If > Rob wants to define an agr format, then let's let him. I think that this > would do it: [...] this should be much more easier: instead of "user", I will return the file-extension, if present. Only when we can not detect a file type from the contents and have no extension than I return "user" Herbert
Re: Conversion problems using Grace files
On Saturday 16 February 2002 5:31 pm, Herbert Voss wrote:
> I have no problem with
>
> \converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" ""
>
> Herbert
Sure, Herbert, but it is still rather ugly, specifying user1, user2 etc. If
Rob wants to define an agr format, then let's let him. I think that this
would do it:
In GraphicsCacheItem::convert, the code snippet
string const from = getExtFromContents(filename_);
string const to = findTargetFormat(from);
should be
string from = getFormatName(filename_);
if (from.empty() || from == "user") {
lyxerr << filename_
<< "\nDon't recognise the file format either from its
contents\n"
<< "or from the extension (as a user-defined format)"
<< std::endl;
return false;
}
string const to = findTargetFormat(from);
where
string getFormatName(string const & filename)
{
// Note: getExtFromContents should be renamed as
// getFormatFromContents as that's what it does.
string const try1 = getExtFromContents(filename);
if (!try1.empty() && try1 != "user") {
// The format is recognised fromt the file's contents
return try1;
}
// Didn't recognise file from it's contents.
// Is the extension defined by the user? If so, asume that that is correct
formats::const_iterator it =
std::find_if(formats.begin(), formats.end(),
FindExt(GetExtension(filename_)));
if (it == formats.end()) {
// Unable to ascertain anything about this file!
return string();
}
return it->name();
}
Re: Conversion problems using Grace files
R. Lahaye wrote: > Herbert Voss wrote: > >>I have no problem with >> >>\converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" >> >> > > Neither have I. Thanks!! > Apparently I was not enough familiar with this type of conversion configuration. > It works fine now. it was a question of reading the docs of grace to get the right options for the conversion and not a question of using the converter stuff of lyx ... Herbert -- http://www.lyx.org/help/
Re: Conversion problems using Grace files
On Mon, Feb 18, 2002 at 11:13:40AM +0900, R. Lahaye wrote: > files. In other words, the following is not possible: > > \converter "user1" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" > \converter "user2" "eps" "gnuplot -what_ever_option_to_EPS $$i" "" > > Regards, > Rob. I don't think that's right. There's nothing magic about "XPM" or "Noweb" or "User" in the converters preferences tab. As far as I understand it, your example should work. ---Kayvan -- Kayvan A. Sylvan | Proud husband of | Father to my kids: Sylvan Associates, Inc. | Laura Isabella Sylvan | Katherine Yelena (8/8/89) http://sylvan.com/~kayvan | "crown of her husband" | Robin Gregory (2/28/92) msg33118/pgp0.pgp Description: PGP signature
Re: Conversion problems using Grace files
Herbert Voss wrote: > > I have no problem with > > \converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" > Neither have I. Thanks!! Apparently I was not enough familiar with this type of conversion configuration. It works fine now. Are my following conclusions correct (I can't find help on the conversion mechanism): 1) I cannot enter my own format as a new LyX format; like Grace (.agr files) cannot be entered as a new Grace-format, only as "user" format. Apparently getExtFromContents() does not 'learn' from the Conversion table about new formats and new extensions of files? 2) Since "user" can only be one entry in the conversion list, I can only define one single conversion as my own. If I have Grace files conversion defined as "user", there is no way to also define, for example, another conversion for GnuPlot files. In other words, the following is not possible: \converter "user1" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" \converter "user2" "eps" "gnuplot -what_ever_option_to_EPS $$i" "" Regards, Rob.
Re: Conversion problems using Grace files
R. Lahaye wrote: >>lyx gets the filetype from its contents, not from the >>extension. If it's an unknown one, like your grace >>than it returns "user". You can define a converter >> >>\converter "user" "eps" "gracebat -hdevice EPS $$i" "" >> > > Still doesn't work; but leave it at this point; will do > the manual version instead since I'm running out of time :(. I have no problem with \converter "user" "eps" "xmgrace -hardcopy -hdevice EPS $$i" "" Herbert -- http://www.lyx.org/help/
Re: Conversion problems using Grace files
On Fri, 15 Feb 2002, R. Lahaye wrote: > Still doesn't work; but leave it at this point; will do > the manual version instead since I'm running out of time :(. Just take a look at the bitmap stuff for the external inst and use that instead. No converter support so you need to say explicitly in the config what needs doing. see lib/external_templates Allan. (ARRae)
Re: Conversion problems using Grace files
Herbert Voss wrote: > > lyx gets the filetype from its contents, not from the > extension. If it's an unknown one, like your grace > than it returns "user". You can define a converter > > \converter "user" "eps" "gracebat -hdevice EPS $$i" "" Still doesn't work; but leave it at this point; will do the manual version instead since I'm running out of time :(. Peculiar detail though: while playing with this, LyX was crashing every now and then, especially after having tried to load some grace files, I loaded an eps file; the graphics dialog closed and LyX disappeared, whop, just like that. It seems that the conversion and LyX got strangled somewhere. Sorry, can't provide more details at this point. Regards, Rob.
Re: Conversion problems using Grace files
On Fri, 15 Feb 2002, Herbert Voss wrote: > R. Lahaye wrote: > > > I was wondering whether the Preferences/Conversion can already be > > used to load directly Grace-format files (a 2D graphics package), > > and have these converted to EPS (from where LyX can take over). > > I tried but failed. > > > getExtFromContents() returns "user" as ext when it's not > a gif/tgif/eps/ps/pdf/jpg/xpm. > Try it with this "file-format" and it should work. > > can you send me an example grace-file? It looks like we'll be needing to do that much needed InsetExternal+InsetGraphics merge about 20 minutes after we release 1.2.0pre1 given the current rate of requests. Allan. (ARRae)
Re: Conversion problems using Grace files
R. Lahaye wrote: > I was wondering whether the Preferences/Conversion can already be > used to load directly Grace-format files (a 2D graphics package), > and have these converted to EPS (from where LyX can take over). > I tried but failed. getExtFromContents() returns "user" as ext when it's not a gif/tgif/eps/ps/pdf/jpg/xpm. Try it with this "file-format" and it should work. can you send me an example grace-file? Herbert -- http://www.lyx.org/help/
Conversion problems using Grace files
Hi, I'm running LyX CVS. I was wondering whether the Preferences/Conversion can already be used to load directly Grace-format files (a 2D graphics package), and have these converted to EPS (from where LyX can take over). I tried but failed. I did following in Prefences/Conversion: Add a new format in Formats-tab: Format grace GUI name Grace Shortcut Extension agr Viewer Add Grace->EPS in Converters-tab: From Grace ToEPS Converter gracebat -hdevice EPS $$i Flags For example gracebat -hdevice EPS myfig.agr will produce myfig.eps Nevertheless, I get an "Error converting" in the figure-square on the canvas. Is this feature not ready yet, or am I making a terrible mistake? - Something else: The filebrowser in the graphics dialog seems to have a fixed pattern of possible file extensions: "*.(ps|eps|png|jpeg|jpg|gif|gz)" How about composing this pattern from the list of file extensions in the converter list, since these are the loadable files? This way I would get immediately "agr" added to the pattern list when I add a Grace converter. Regards, Rob.
