Getting all sub-keys of a registry key

cowwoc · 30th June 2005, 18:10

I know how to read the value of a registry key, but how do I iterate through all it's children?

I've seen code floating around that will return the current installed JRE, but it does not return the build version. The only way to do that (so far as I can see) is to iterate all versions listed in the registry, finding the entry with the highest build number and returning that.

For example, instead of returning 1.5.0, I'm expecting the code to return 1.5.0_02

Gili

kichik · 30th June 2005, 18:17

Use EnumRegKey.

cowwoc · 30th June 2005, 20:14

Thank you. Now how does one strncmp()?

Specifically, I want to know whether the registry key returned has a name that starts with the string specified in $0.

kichik · 30th June 2005, 20:17

Copy only the number of characters you need using StrCpy's parameters (see documentation for more information and examples) and then use StrCmp or the LogicLib.

cowwoc · 30th June 2005, 20:27

I guess the same goes for dereferencing a specific character within a String? That is, I want to find the index of the first '_' within a String. Do I have to StrCpy one character at a time to find it?

kichik · 30th June 2005, 20:29

Yes, that's what you need to do. However, there are functions that already do that. StrStr is available in the documentation and others are available in the Wiki.

cowwoc · 30th June 2005, 20:38

I didn't know we had a Wiki. Look what I found: http://nsis.sourceforge.net/wiki/Get...uild/update%29

No need to write my own, someone else did it

Thanks a lot!
Gili

Afrow UK · 30th June 2005, 20:43

I'll make rIndexOf and indexOf functions.

-Stu

cowwoc · 30th June 2005, 20:54

Excellent idea. It seems most scripts use them and end up reinventing the wheel. It would also clear up the code

Afrow UK · 30th June 2005, 21:00

Here you go:
http://nsis.sourceforge.net/wiki/Ind...cter_in_string

-Stu

deguix · 1st July 2005, 09:19

Ahnn... StrFunc already had a function called StrLoc where you can find the position of a string from the start or end of the main string, in one function. That means, you just reinvented the wheel.

I didn't like to post functions on Archive, but now, as the wiki is online, I can post the StrFunc functions there so they can be reselected for the future Useful Functions Header file.

Afrow UK · 1st July 2005, 10:45

Ah well never mind

I was bored anyway lol

-Stu

deguix · 1st July 2005, 11:42

That's ok, 2 are better than 1

. Here goes the wiki link for StrLoc: http://nsis.sourceforge.net/wiki/StrLoc.

30th June 2005, 18:10	#1
cowwoc Member Join Date: Feb 2005 Posts: 51	Getting all sub-keys of a registry key I know how to read the value of a registry key, but how do I iterate through all it's children? I've seen code floating around that will return the current installed JRE, but it does not return the build version. The only way to do that (so far as I can see) is to iterate all versions listed in the registry, finding the entry with the highest build number and returning that. For example, instead of returning 1.5.0, I'm expecting the code to return 1.5.0_02 Gili

30th June 2005, 18:17	#2
kichik M.I.A. [NSIS Dev, Mod] Join Date: Oct 2001 Location: Israel Posts: 11,337	Use EnumRegKey. NSIS FAQ \| NSIS Home Page \| Donate $ "I hear and I forget. I see and I remember. I do and I understand." -- Confucius

30th June 2005, 20:17	#4
kichik M.I.A. [NSIS Dev, Mod] Join Date: Oct 2001 Location: Israel Posts: 11,337	Copy only the number of characters you need using StrCpy's parameters (see documentation for more information and examples) and then use StrCmp or the LogicLib. NSIS FAQ \| NSIS Home Page \| Donate $ "I hear and I forget. I see and I remember. I do and I understand." -- Confucius

30th June 2005, 20:29	#6
kichik M.I.A. [NSIS Dev, Mod] Join Date: Oct 2001 Location: Israel Posts: 11,337	Yes, that's what you need to do. However, there are functions that already do that. StrStr is available in the documentation and others are available in the Wiki. NSIS FAQ \| NSIS Home Page \| Donate $ "I hear and I forget. I see and I remember. I do and I understand." -- Confucius

30th June 2005, 20:43	#8
Afrow UK Moderator Join Date: Nov 2002 Location: Birmingham, England Posts: 8,202	I'll make rIndexOf and indexOf functions. -Stu Need an installer? http://www.afrowsoft.co.uk

30th June 2005, 20:14	#3
cowwoc Member Join Date: Feb 2005 Posts: 51	Thank you. Now how does one strncmp()? Specifically, I want to know whether the registry key returned has a name that starts with the string specified in $0.

30th June 2005, 20:27	#5
cowwoc Member Join Date: Feb 2005 Posts: 51	I guess the same goes for dereferencing a specific character within a String? That is, I want to find the index of the first '_' within a String. Do I have to StrCpy one character at a time to find it?

30th June 2005, 20:38	#7
cowwoc Member Join Date: Feb 2005 Posts: 51	I didn't know we had a Wiki. Look what I found: http://nsis.sourceforge.net/wiki/Get...uild/update%29 No need to write my own, someone else did it Thanks a lot! Gili

30th June 2005, 20:54	#9
cowwoc Member Join Date: Feb 2005 Posts: 51	Excellent idea. It seems most scripts use them and end up reinventing the wheel. It would also clear up the code

30th June 2005, 21:00	#10
Afrow UK Moderator Join Date: Nov 2002 Location: Birmingham, England Posts: 8,202	Here you go: http://nsis.sourceforge.net/wiki/Ind...cter_in_string -Stu Need an installer? http://www.afrowsoft.co.uk

1st July 2005, 09:19	#11
deguix Major Dude Join Date: Dec 2002 Location: Everett - MA, USA Posts: 1,351	Ahnn... StrFunc already had a function called StrLoc where you can find the position of a string from the start or end of the main string, in one function. That means, you just reinvented the wheel. I didn't like to post functions on Archive, but now, as the wiki is online, I can post the StrFunc functions there so they can be reselected for the future Useful Functions Header file. My Wiki Pages Working now on: New projects. (language: any)

1st July 2005, 10:45	#12
Afrow UK Moderator Join Date: Nov 2002 Location: Birmingham, England Posts: 8,202	Ah well never mind I was bored anyway lol -Stu Need an installer? http://www.afrowsoft.co.uk

1st July 2005, 11:42	#13
deguix Major Dude Join Date: Dec 2002 Location: Everett - MA, USA Posts: 1,351	That's ok, 2 are better than 1 . Here goes the wiki link for StrLoc: http://nsis.sourceforge.net/wiki/StrLoc. My Wiki Pages Working now on: New projects. (language: any)

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