Tuesday, January 18, 2011
Delete a file from Google Code Hosted Project
<a href='http://www.techquark.com/2009/09/delete-file-from-google-code-hosted.html'>Delete a file from Google Code Hosted Project</a>
Monday, January 17, 2011
G Subversion FAQ
Ref: http://code.google.com/p/support/wiki/SubversionFAQ
SubversionFAQ
Anonymous checkouts can be done via http://, while developers must use authenticated https:// to commit changes.
It's also possible to configure your Subversion client to automatically set each file's mime-type. For example, by modifying ~/.subversion/config to resemble
Note that your Google Code repository must be reset to revision 0 for this to work. Your project's Source tab will display instructions on how to reset the repository yourself. (Note: you must be a project owner to reset your own repository, and also to push code up with svnsync.)
Here's a sample transcript that demonstrates how you can push history from an existing repository (located at file:///my/repos) to your repository on Google Code:
Running svnsync on a large repository will take a significant amount of time. If you are disconnected during the process, you may see the error message "svnsync: Couldn't get lock on destination repos after 10 attempts". If this happens, you can remove the lock yourself; see the "Locks" section of svnsync.txt.
Forums/Community:
The proper long-term solution here isn't to trust a specific certificate, but rather trust the certifying authority (CA) which signed the certificate, just like web browsers do. This process is explained in detail over in the Subversion book. In a nutshell:
For gadgets, we still recommend using the Gadget cache.
SubversionFAQ
Subversion FAQ
- What version of Subversion do you use?
- How can I make SVN serve HTML and images with the correct Content-Type?
- How do I import my existing source code?
- How do I import an existing Subversion repository?
- How do I download my Subversion history?
- How much disk space can my repository use?
- Where do I get a copy of Subversion?
- Where can I get more info about using Subversion?
- Can I use Microsoft Visual Studio with Google Code?
- Can I set fine-grained path access controls in the Subversion repository?
- Where do I get a password for committing to Subversion?
- Why is my Subversion password different from my Google Account password?
- Why can't I set my own Subversion password?
- How do I change my Subversion password?
- How do I check out code anonymously?
- How do I check code into the repository?
- How can I reset the repository?
- How do I give new developers check-in privileges?
- How do I take away check-in privileges of a developer who's no longer participating in the project?
- What does "use the fingerprint to validate the certificate manually" mean?
- Does Google own the code that I check into Subversion?
- How do I set the cache headers for Subversion?
- How do I use Subversion when behind a proxy?
What version of Subversion do you use?¶
We currently use Subversion 1.6, made available via WebDAV.Anonymous checkouts can be done via http://, while developers must use authenticated https:// to commit changes.
How can I make SVN serve HTML and images with the correct Content-Type?¶
You need to tell subversion what mime-type to use. Just use the command:svn propset svn:mime-type 'text/html' FILENAMEor
svn propset svn:mime-type 'image/jpeg' FILENAMEFor more info: http://svnbook.red-bean.com/en/1.4/svn.advanced.props.file-portability.html#svn.advanced.props.special.mime-type
It's also possible to configure your Subversion client to automatically set each file's mime-type. For example, by modifying ~/.subversion/config to resemble
[miscellany] enable-auto-props = yes [auto-props] *.html = svn:mime-type=text/htmlFor more info: http://svnbook.red-bean.com/en/1.1/ch07.html#svn-ch-7-sect-1.3.2
How do I import my existing source code?¶
Just use the 'svn import' command. Note that this command only loads a single tree of code into your repository.How do I import an existing Subversion repository?¶
To upload the history of an existing Subversion repository, use the svnsync tool that ships with Subversion 1.4 or later. Run svnsync help to read more about this tool.Note that your Google Code repository must be reset to revision 0 for this to work. Your project's Source tab will display instructions on how to reset the repository yourself. (Note: you must be a project owner to reset your own repository, and also to push code up with svnsync.)
Here's a sample transcript that demonstrates how you can push history from an existing repository (located at file:///my/repos) to your repository on Google Code:
$ svnsync init --username YOURUSERNAME https://YOURPROJECT.googlecode.com/svn file:///path/to/localrepos Copied properties for revision 0. $ svnsync sync --username YOURUSERNAME https://YOURPROJECT.googlecode.com/svn Committed revision 1. Copied properties for revision 1. Committed revision 2. Copied properties for revision 2. [...]When prompted for your password, use your googlecode.com password, which can be found on the settings tab of your profile page.
Running svnsync on a large repository will take a significant amount of time. If you are disconnected during the process, you may see the error message "svnsync: Couldn't get lock on destination repos after 10 attempts". If this happens, you can remove the lock yourself; see the "Locks" section of svnsync.txt.
How do I download my Subversion history?¶
To download the history of your Google Code repository, use the svnsync tool that ships with Subversion 1.4 or later. Run 'svnsync help' to read more about this tool. Note that your local repository must have an executable 'pre-revprop-change' hook script which allows revprop changes (or at least those of the form 'svnsync*'.) Here's a sample transcript that demonstrates how you can pull history from your Google Code repository to a local repository:$ svnadmin create localrepos $ emacs localrepos/hooks/pre-revprop-change # make it 'exit 0' $ chmod +x localrepos/hooks/pre-revprop-change $ svnsync init --username USERNAME file:///path/to/localrepos https://myproject.googlecode.com/svn Copied properties for revision 0. $ svnsync sync --username USERNAME file:///path/to/localrepos Committed revision 1. Copied properties for revision 1. Committed revision 2. Copied properties for revision 2. [...]After you've done this once, you can continue to run the last 'svnsync sync' command to periodically pull down the latest commits and keep your local mirror up-to-date.
How much disk space can my repository use?¶
We're offering plenty of space for storing source code under revision control. We start new projects with a 2GB quota. That's enough to host the vast majority of open source projects. We're also willing to work with projects that need more space.Where do I get a copy of Subversion?¶
Just visit the packages page on http://subversion.apache.org/.Where can I get more info about using Subversion?¶
You might want to read the Subversion Book.Forums/Community:
Can I use Microsoft Visual Studio with Google Code?¶
Yes. There are a number of Windows clients for Subversion: you can use the command-line client, though TortoiseSVN is a very popular client that integrates Subversion functionality directly into Windows Explorer. Another possibility is to use AnkhSVN, which is a Visual Studio plug-in that offers Subversion access within the IDE.Can I set fine-grained path access controls in the Subversion repository?¶
No. While corporate software projects tend to revolve around fine-grained access control to source code, we don't think that this is the most productive practice for open source development. In an open source project, the code is entirely public and the developer community should be based on trust. If your community invites someone to be a project member, then it's a collective statement that your community trusts the person with write access to the repository. If the community feels that the person should only change certain portions of the source code, then that expectation should be made clear. If the new member violates this social contract, the community is free to expel the member and revert any unwanted commits.Where do I get a password for committing to Subversion?¶
If you're a project owner or committer, just look at your "Settings" tab of your profile page. It will display your googlecode.com password. This password is used for access to your project's Subversion repository and for command-line file uploads to your project's Downloads area. This password is not the same as the password that you use to access your project on the web.Why is my Subversion password different from my Google Account password?¶
The default for many svn clients is to automatically cache the password on your local disk. Your Google Account password is much too valuable to expose in this manner. So while there is an inconvenience for users with clients that do not automatically cache the password, the risk it avoids in the other clients is worth it.Why can't I set my own Subversion password?¶
For the reasons mentioned above, we would prefer this password to be thought of in the same way as a temporary password sent via email. It has a similar level of security in that it is potentially accessible by third-parties as plain text. Allowing users to set their own password is likely to encourage them to divulge their Google Account or other high risk passwords.How do I change my Subversion password?¶
The "Settings" tab of your profile page has a button to automatically regenerate your googlecode.com password.How do I check out code anonymously?¶
You can use a Subversion client to check out a project's "trunk" code by requesting this URL: http://projectname.googlecode.com/svn/trunkHow do I check code into the repository?¶
You can use the 'svn import' command, just as you'd do with any typical Subversion repository.How can I reset the repository?¶
If you're a project owner, you can click on the "reset this repository" link at the bottom of the "Source" tab's page.How do I give new developers check-in privileges?¶
If you're a project owner, just go to the project's "Administer" tab and add people as project members.How do I take away check-in privileges of a developer who's no longer participating in the project?¶
If you're a project owner, just go to the project's "Administer" tab and remove that person's project membership.What does "use the fingerprint to validate the certificate manually" mean?¶
If you get a message such as the following:Error validating server certificate for 'https://projectname.googlecode.com:443': - The certificate is not issued by a trusted authority. Use the fingerprint to validate the certificate manually!Google updates its server SSL certificates for 'googlecode.com' fairly regularly, if only to renew the expiration dates. This causes most Subversion clients (the openssl library, actually) to notice a new fingerprint and complain. When you see the fingerprint "flip flopping", it means you're hitting different servers -- some which have the newer certificate, and some which haven't yet received it yet (and still have the old one.)
The proper long-term solution here isn't to trust a specific certificate, but rather trust the certifying authority (CA) which signed the certificate, just like web browsers do. This process is explained in detail over in the Subversion book. In a nutshell:
- Try setting "ssl-trust-default-ca=true" in your client's "servers" file (in the "global" section).
- If that doesn't work (many systems simply don't have a default set of CAs to trust), then you can tell your client to just trust Google's CA anyway, by pointing it to a .pem file that you've downloaded:
- Download this file to local disk and call it 'google.pem'
- In the client's "servers" file in the "global" section, set "ssl-authority-files=google.pem"
Does Google own the code that I check into Subversion?¶
Hosting your code on Google Code doesn't change ownership of the code in any way.How do I set the cache headers for Subversion?¶
Cache headers for a page hosted in Subversion can be controlled by setting the google-cache-control:max-age property. Simply set the value of google-cache-control to the number of seconds that the item should be cached. The default is 60 seconds. To disable caching, set the property to 0.For gadgets, we still recommend using the Gadget cache.
How do I use Subversion when behind a proxy?¶
http://subversion.apache.org/faq.html#proxyMonday, November 22, 2010
App Inventor for Android
App Inventor for Android: "App Inventor is a Google software that allows anyone to develop simple Android apps. 'To use App Inventor, you do not need to be a developer. App Inventor requires NO programming knowledge. This is because instead of writing code, you visually design the way the app looks and use blocks to specify the app's behavior.'
App Inventor lets you create applications that use advanced features like GPS or sending SMS messages. 'You can build an app to help you remember where you parked your car, an app that shows the location of your friends or colleagues at a concert or conference, or your own custom tour app of your school, workplace, or a museum.'
Google says that the software has been successfully tested in several schools across the US. 'App Inventor for Android gives everyone, regardless of programming experience, the opportunity to control and reshape their communication experience. We've observed people take pride in becoming creators of mobile technology and not just consumers of it,' says Google's Mark Friedman.
You need an invitation to try App Inventor, but you can complete this form to get an invitation.
'The App Inventor project is led by MIT computer scientist Harold Abelson, the founding director of the Free Software Foundation, Public Knowledge, and the Creative Commons who's now on sabbatical at Google,' reports the Register.
'The Google project, Mr. Abelson said, is intended to give users, especially young people, a simple tool to let them tinker with smartphone software, much as people have done with computers. Over the years, he noted, simplified programming tools like Basic, Logo and Scratch have opened the door to innovations of all kinds. Microsoft's first product, for example, was a version of Basic, pared down to run on personal computers. The Google application tool for Android enables people to drag and drop blocks of code — shown as graphic images and representing different smartphone capabilities — and put them together, similar to snapping together Lego blocks. The result is an application on that person's smartphone,' notes the New York Times.
App Inventor is especially suitable for Android because Android apps are collections of reusable intents. Even if you build a simple application, you can easily make it more powerful by using components from other applications.
{ Thanks, Kevin. }
"
App Inventor lets you create applications that use advanced features like GPS or sending SMS messages. 'You can build an app to help you remember where you parked your car, an app that shows the location of your friends or colleagues at a concert or conference, or your own custom tour app of your school, workplace, or a museum.'
Google says that the software has been successfully tested in several schools across the US. 'App Inventor for Android gives everyone, regardless of programming experience, the opportunity to control and reshape their communication experience. We've observed people take pride in becoming creators of mobile technology and not just consumers of it,' says Google's Mark Friedman.
You need an invitation to try App Inventor, but you can complete this form to get an invitation.
'The App Inventor project is led by MIT computer scientist Harold Abelson, the founding director of the Free Software Foundation, Public Knowledge, and the Creative Commons who's now on sabbatical at Google,' reports the Register.
'The Google project, Mr. Abelson said, is intended to give users, especially young people, a simple tool to let them tinker with smartphone software, much as people have done with computers. Over the years, he noted, simplified programming tools like Basic, Logo and Scratch have opened the door to innovations of all kinds. Microsoft's first product, for example, was a version of Basic, pared down to run on personal computers. The Google application tool for Android enables people to drag and drop blocks of code — shown as graphic images and representing different smartphone capabilities — and put them together, similar to snapping together Lego blocks. The result is an application on that person's smartphone,' notes the New York Times.
App Inventor is especially suitable for Android because Android apps are collections of reusable intents. Even if you build a simple application, you can easily make it more powerful by using components from other applications.
{ Thanks, Kevin. }
"
Google Scribe
Google Scribe: "Google launched a very interesting tool that offers suggestions as you type: Google Scribe. It's not exactly the service I anticipated 3 years ago, but Google Scribe works surprisingly well. For example, I started to type 'This works sur' and Google suggested 'This works surprisingly well', which is exactly what I wanted to type. Instead of typing 14 characters, I could only type '1' or press Enter to select the first suggestion.
'Google Scribe provides text completion service. Using information from what you have already typed in a document, Google Scribe provides related word or phrase completion suggestions. In addition to saving keystrokes, Google Scribe's suggestions indicate correct or popular phrases to use,' explains Google.
The nice thing about this service is that you don't need to use Google's editor. You can add a bookmarklet to your browser and use Google Scribe in Gmail, Blogger,Google Docs or on any web page that includes text fields.
Google Scribe only works for English right now, but I'm sure that Google will add many other languages in the future. If you don't like to see suggestions for all the words you type, enable the on-demand mode (Ctrl+Shift+J) and you'll only see suggestions when you press Tab.
Since Google uses data extracted from web pages, you'll see a lot of strange suggestions like this pattern from Google's navigation bar:
or this text, which is frequently used on IngentaConnect's site:
{ Thanks, Robert. }
"
'Google Scribe provides text completion service. Using information from what you have already typed in a document, Google Scribe provides related word or phrase completion suggestions. In addition to saving keystrokes, Google Scribe's suggestions indicate correct or popular phrases to use,' explains Google.
The nice thing about this service is that you don't need to use Google's editor. You can add a bookmarklet to your browser and use Google Scribe in Gmail, Blogger,
Google Scribe only works for English right now, but I'm sure that Google will add many other languages in the future. If you don't like to see suggestions for all the words you type, enable the on-demand mode (Ctrl+Shift+J) and you'll only see suggestions when you press Tab.
Since Google uses data extracted from web pages, you'll see a lot of strange suggestions like this pattern from Google's navigation bar:
or this text, which is frequently used on IngentaConnect's site:
{ Thanks, Robert. }
"
YouTube Live Streaming
YouTube Live Streaming: "YouTube started to test a new platform for live streaming. 'Starting at 8:00 a.m. PT, we will begin a limited trial of a new live streaming platform in conjunction with four of our partners: Howcast, Next New Networks, Rocketboom and Young Hollywood. This new platform integrates live streaming directly into YouTube channels; all broadcasters need is a webcam or external USB/FireWire camera.'
YouTube says that live streaming is 'a natural evolution to online video that adds an extra level of engagement', but this is also a feature that could make YouTube's integration with Google TV even more useful. YouTube wants to become the central hub for online video, so it now focuses on adding more premium content: live events, music videos, movies and TV shows, movie rentals.
"
YouTube says that live streaming is 'a natural evolution to online video that adds an extra level of engagement', but this is also a feature that could make YouTube's integration with Google TV even more useful. YouTube wants to become the central hub for online video, so it now focuses on adding more premium content: live events, music videos, movies and TV shows, movie rentals.
"
Chromium OS - The Chromium Projects
Chromium OS - The Chromium Projects: "Chromium OS
Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web. Here you can review the project's design docs, obtain the source code, and contribute. To learn more about the project goals, read the announcement blog post."
Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web. Here you can review the project's design docs, obtain the source code, and contribute. To learn more about the project goals, read the announcement blog post."
Google Chrome OS - Wikipedia, the free encyclopedia
Google Chrome OS - Wikipedia, the free encyclopedia: "oogle Chrome OS is a forthcoming Linux-based, open source[3] operating system designed by Google to work exclusively with web applications.[4] First announced on July 7, 2009, Chrome OS was originally intended be publicly available as a stable release by the northern hemisphere 'late fall' of 2010 according to Google. On 15 November 2010 Google CEO Eric Schmidt confirmed that the new operating system would not be released until early 2011.[5][6][7]"
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