topic Re: Escape-character in GDL ? in Libraries & objects

Escape-character in GDL ?

Anonymous — Mon, 30 May 2011 13:10:31 GMT

I'm about to analyze a string containing this:
record = bla-bla-bla "texture174" = "CD" bla-bla-bla

I would like to search for the "-substring
I use STRSTR(record, "\"texture"), but when I check the script, I get an error message.
So how should I escape special characters like " ?

Thank you!

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 07:43:02 GMT

Although I'm not totally sure it will work in that case you can usually use ' instead of ". Like: strstr(record,"'\'texture")
Hope this helps
regards,
olivier

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 08:23:36 GMT

Hi Olivier
Yes today, after a good night sleep, I figured out that I could simply replace the " with '. So I search for '"texture', and that worked!
But I always get new problems trying to do new things.
So now I'm struggelig with this:

My file start with:
DIM tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[3]
tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[1] = 0.9803921580315
tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[2] = 0.9098039269447
tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[3] = 0.7803921699524
define texture "Texture174" "CD", 0.3, 0.3, 932, 0

define material "PKSLeatherCD" 20,
bla
bla
bla

The first record contains only DIM but miss the rest of the line,
and the next records are ok, but the reading ends at the empty line. My loop test for n > 0 (n= INPUT(.....))
Between the DIM and the rest of the line is a tabulator.
I have also tried to specify the separator \n when I open the file, but no change.
Now I'm trying to find an overview of special characters like \t, \n a.s.o.
but I've not found it so far.
I would like to use the character that really ends the lines as a separator and test for a character that ends the file (if it exists) to end the loop.

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 08:49:20 GMT

It seem like the tabulator is used as the separator, even if I give the \n as a separator when I open the file.
Now I test at n <> -1 where n= INPUT(......)
Then the reading do not end at the empty line.
I see that the Unicode character set is used in GDL. I've found a table,
but I do not understand the connection between the \t, \n - notation at one side and the Unicode-table at the other side.
If I want to use CR and LF as a separator, what should I test for?
I tried SEPARATOR = 'CRLF', but the tabulator is still beeing used as a separator.
Please help!

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 11:25:25 GMT

I'm not sure about what you are trying to achieve, but I guess u want to define variables ( in that case tmp_LWA_COGSMASKEDIMAGE_BASECOLOR)
in a separate text file.
If that is the case, instead of using txt in plugin to read in the data, you could save your txt file as a gdl file(just change the extension to ".gdl") and call it from your main script. If there is a "tmp_LWA_COGSMASKEDIMAGE_BASECOLOR" existing in your main object,
then when you will call the gdl file the values defined in it will be transferred to the main object

in short
-a main object with a tmp_LWA_COGSMASKEDIMAGE_BASECOLOR parameter
+
call "values1.gdl"

-a values1.gdl file with your gdl code defining the tmp_LWA_COGSMASKEDIMAGE_BASECOLOR in it.

Hope this helps,
olivier

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 11:54:06 GMT

Now I'm confused.
My idea is to make a material the regular way, write the definition to a file "Material.gdl", put the names of the other material's textures into another file. Then I want make a program (GDL-object) merging this information together in a sensible way, and write the result to a file.

Then I can copy/paste the new material-definitions into the master-script of the object needing this materials.

But, unfortunately I meet some challenges .....

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 12:50:03 GMT

Sorry but I'm ever more confused, I really don't get it.
Maybe I'll figure it out after one night of sleep

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 15:21:29 GMT

I have a background as a system developer, so it is such things we are likely to do. I suppose it is cryptic to others that do not have the same background.

So I just try to automate the job of making material definitions that has small variations. It's only the texture-iterator and the material name and the texture-filename that changes for every definition.

If you just use the Write GDL-command from the Special Menu, a file with material definitions is created.
But it is possible to make such a file programatically too.
GDL has possibilities to open a file, read from it, test the strings and replace part of strings, and write the changed content back to another file.
But I'm struggeling testing on special characters like tabulator, linefeed a.s.o.

You are probably even more confused...?? 🙂

Re: Escape-character in GDL ?

Frank Beister — Tue, 31 May 2011 15:31:15 GMT

you should post the part, which you have written to read the file.

Re: Escape-character in GDL ?

Anonymous — Tue, 31 May 2011 17:26:39 GMT

This is the input-file:
DIM tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[3]
tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[1] = 0.9803921580315
tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[2] = 0.9098039269447
tmp_LWA_COGSMASKEDIMAGE_BASECOLOR[3] = 0.7803921699524
define texture "Texture174" "CD", 0.3, 0.3, 932, 0

define material "PKSLeatherCD" 20,
0.980392, 0.909804, 0.780392,
0.92, 0.66, 0.14, 0, 4.6, 0,
1, 1, 1,
0, 0, 0,
0, ind(fill, "Background"), -4,
ind(texture, "Texture174") ADDITIONAL_DATA LWA_COLOR = "LWA_COGSMASKEDIMAGE",
LWA_COGSMASKEDIMAGE_BASECOLOR = tmp_LWA_COGSMASKEDIMAGE_BASECOLOR,
LWA_COGSMASKEDIMAGE_FILE = "CD", LWA_COGSMASKEDIMAGE_SCALE = 0.3000000119209,
LWA_COGSMASKEDIMAGE_ASPRATIO = 1, LWA_COGSMASKEDIMAGE_MASK_FILE = "CD",
LWA_COGSMASKEDIMAGE_MASKSCALE = 0.3000000119209, LWA_COGSMASKEDIMAGE_MASPRATIO = 1,
LWA_REFLECTANCE = "LWA_RFMATTE", LWA_RFMATTE_AMBIENT = 0.9200000166893,
LWA_RFMATTE_DIFFUSE = 0.660000026226, LWA_TRANSPARENCY = "LWA_TRNONE",
LWA_TEXTURESPACE = "LWA_TSGSREPLICATE", LWA_TSGSREPLICATE_SREFLECT = 1,
LWA_TSGSREPLICATE_TREFLECT = 1, LWA_TSGSREPLICATE_SSIZE = 0.3000000119209,
LWA_TSGSREPLICATE_TSIZE = 0.3000000119209, LWA_TSGSREPLICATE_ANGLE = 0,
LWA_PIPELINE = "LWA_PLNONE", LWA_DISPLACEMENT = "LWA_DPWBUMPMAP",
LWA_DPWBUMPMAP_FILE = "CD", LWA_DPWBUMPMAP_WIDTH = 0.5299999713898,
LWA_DPWBUMPMAP_HEIGHT = 0.5299999713898, LWA_DPWBUMPMAP_AMPLITUDE = 0.01999999955297,
LWA_DPWBUMPMAP_SOFTNESS = 1, LWA_DPWBUMPMAP_SCALE = 1,
LWA_DPWBUMPMAP_ASPRATIO = 1

This is the code:
materialDefinition = open ("TEXT", "Material.gdl", "mode = RO,LIBRARY")
materialNames = open ("TEXT", "MaterialNames.gdl", "mode = RO,LIBRARY")
Master_GDL = open ("TEXT", "Master_GDL_my materials.gdl","SEPARATOR = '\n', mode = WA,LIBRARY")

i = 1
n = INPUT (materialDefinition , i, 1, field1, field2, field3, field4, field5, field6, field7)

WHILE n <> -1 DO

definition[1] = field1
definition[2] = field2
definition[3] = field3
definition[4] = field4
definition[5] = field5
definition[6] = field6
definition[7] = field7

OUTPUT Master_GDL, i, 1, field1, field2, field3, field4, field5, field6, field7

field1 = ""
field2 = ""
field3 = ""
field4 = ""
field5 = ""
field6 = ""
field7 = ""

i = i + 1
n = INPUT (materialDefinition , i, 1, field1, field2, field3, field4, field5, field6, field7)
ENDWHILE
CLOSE materialDefinition
CLOSE Master_GDL

The result is attached.
How do I put in CR LF sequences after each line?

Re: Escape-character in GDL ?

Anonymous — Wed, 01 Jun 2011 07:50:31 GMT

I suppose all the text in the last message scares most people. Too much to read, so I try this instead:

OUTPUT Master_GDL, i, 1, field1, field2, field3, field4, field5, field6, field7, "\n"

I try to write some variables separated with tabulators to a file.
But every output should be ended by a newline.
The statement above do not function in such a way.
When I read the file into Notepad, the content of the whole file is there.
When I read it into OpenOffice then only the first line is shown.

Can anyone tell me how to end an output with an understandable newline or maybe CR and NL ?

Re: Escape-character in GDL ?

Anonymous — Wed, 01 Jun 2011 07:51:16 GMT

Ok now I understand.
Thanks for the explaination.
Although I don't understand if you manage to automatize this export of material definitions or you have to do it manually through special menu command.
Anyway I'don't see yet what is wrong in your code, I'll try to help.
I've used text output to create gdl files, but not so much to read txt files.
Hope you manage soon

Re: Escape-character in GDL ?

Anonymous — Wed, 01 Jun 2011 07:59:54 GMT

Actually I'm not sure you need to put an end of line manually.
I think every output statement creates a new line.

Re: Escape-character in GDL ?

Anonymous — Wed, 01 Jun 2011 09:17:20 GMT

My output just comes as one long line, or it looks like that in Notepad.

OpenOffice just show the first line, so probably my "program" make some
format it do not understand.

Re: Escape-character in GDL ?

Anonymous — Wed, 01 Jun 2011 09:38:59 GMT

I'm struggeling so much with the special characters.
Here is another example. I'll show you an extract of my code:

WHILE n <> -1 DO
print n
record = ""
FOR j = 1 TO n
definition = field
IF VARTYPE(definition) = 1 THEN
definition = STR(definition, 15, 13)
ENDIF
record = record + definition + "\t"
print record
NEXT j

OUTPUT Master_GDL, i, 0, record

The problem is:
When two fields are returned, the record will only consist of the first, as long as I put tabulator into the record.
If I remove the tabulator, then the record consists of both fields, but it's merged together, and it should not be that way.

Are there someone that can tell me how to deal with the special characters?

Re: Escape-character in GDL ?

Anonymous — Wed, 01 Jun 2011 12:02:34 GMT

Eventually I found the solution I've been looking for the last days.
And I thought maybe someone else also will have use of the same piece of knowledge.

I looked in the Unicode-map, and tested out the different notifications.
When I wrote:

IF VARTYPE(field) = 1 THEN
IF field = HT THEN
print "Tab"
ENDIF
ENDIF

Then, I was able to separate tabs from zeros.
Hopfully I can use this notification in other programatic tasks too.

Here is a link to the Unicode-map:
http://en.wikipedia.org/wiki/List_of_Unicode_characters#C0_Controls_and_Basic_Latin

Re: Escape-character in GDL ?

Anonymous — Wed, 01 Jun 2011 14:20:09 GMT

I thought I had learned something useful, but when I made a subroutine, testing a numeric field from an INPUT-statement against every special character in the Unicode-set, every test was true.
And that can't be true.

IF VARTYPE(field) = 1 THEN
sign = field
GOSUB "CheckSign"
ENDIF

! *******************************************
"CheckSign":
! ---------------------------------------------------------------------
IF sign = SOH THEN
print "SOH"
ENDIF
IF sign = STX THEN
print "STX"
ENDIF
IF sign = ETX THEN
print "ETX"
ENDIF
IF sign = EOT THEN
print "EOT"
ENDIF
IF sign = ENQ THEN
print "ENQ"
ENDIF
IF sign = ACK THEN
print "ACK"
ENDIF
IF sign = BEL THEN
print "BEL"
ENDIF
IF sign = BS THEN
print "BS"
ENDIF
IF sign = HT THEN
print "HT"
ENDIF
IF sign = LF THEN
print "LF"
ENDIF
IF sign = VT THEN
print "VT"
ENDIF
IF sign = FF THEN
print "FF"
ENDIF
IF sign = CR THEN
print "CR"
ENDIF
IF sign = SO THEN
print "SO"
ENDIF
IF sign = SI THEN
print "SI"
ENDIF
IF sign = DLE THEN
print "DLE"
ENDIF
IF sign = DC1 THEN
print "DC1"
ENDIF
IF sign = DC2 THEN
print "DC2"
ENDIF
IF sign = DC3 THEN
print "DC3"
ENDIF
IF sign = DC4 THEN
print "DC4"
ENDIF
IF sign = NAK THEN
print "NAK"
ENDIF
IF sign = SYN THEN
print "SYN"
ENDIF
IF sign = ETB THEN
print "ETB"
ENDIF
IF sign = CAN THEN
print "CAN"
ENDIF
IF sign = EM THEN
print "EM"
ENDIF
IF sign = SUB THEN
print "SUB"
ENDIF
IF sign = ESC THEN
print "ESC"
ENDIF
IF sign = FS THEN
print "FS"
ENDIF
IF sign = GS THEN
print "GS"
ENDIF
IF sign = RS THEN
print "RS"
ENDIF
IF sign = US THEN
print "US"
ENDIF
IF sign = SP THEN
print "SP"
ENDIF
RETURN