[squeak-dev] The Inbox: System-laza.423.mcz
leves at elte.hu
Tue Feb 22 15:40:44 UTC 2011
On Tue, 22 Feb 2011, David T. Lewis wrote:
> FYI, the OSProcessPlugin distributed with unix VMs provides these:
> <primitive: 'primitiveEnvironmentAt:' module: 'UnixOSProcessPlugin'>
> <primitive: 'primitiveEnvironmentAtSymbol:' module: 'UnixOSProcessPlugin'>
> For Windows it is this (but the plugin is not distributed):
> <primitive: 'primitiveGetEnvironmentStrings' module. 'Win32OSProcessPlugin'>
It's distributed with Cog, but the primitive fails.
> On Tue, Feb 22, 2011 at 11:45:30AM +0100, Alexander Lazarevi?? wrote:
>> I would like to add this to the trunk. This would allow an image running on
>> linux to read an envVar that points to a central directory of sources files
>> (see thread ).
>> On other platforms the environment dictionary is just empty.
>> This could be easily changed in the future when the VMs on all platforms
>> might offer a primitive to access the os envVars.
>> 2011/2/22 <commits at source.squeak.org>
>>> Alexander Lazarević uploaded a new version of System to project The
>>> ==================== Summary ====================
>>> Name: System-laza.423
>>> Author: laza
>>> Time: 22 February 2011, 11:31:19.136 am
>>> UUID: 2c296259-64d4-499d-b4b5-9a4046d737fa
>>> Ancestors: System-ul.422
>>> Add support for accessing OS environment variables (on linux at first)
>>> =============== Diff against System-ul.422 ===============
>>> Item was added:
>>> + ----- Method: SmalltalkImage>>environ (in category 'os') -----
>>> + environ
>>> + "Smalltalk os environ"
>>> + | env c in match out name |
>>> + env := IdentityDictionary new.
>>> + self os osVersion = 'linux' ifFalse: [^env]. "Currently only
>>> supported on linux"
>>> + in := FileStream oldFileOrNoneNamed: '/proc/self/environ'.
>>> + in ifNil: [^env].
>>> + out := WriteStream on: String new.
>>> + match := $=.
>>> + [(c := in next) isNil] whileFalse: [
>>> + c = match
>>> + ifTrue: [
>>> + c = $= ifTrue: [name := out contents. match
>>> := 0 asCharacter].
>>> + c = 0 asCharacter ifTrue: [env at: name
>>> asSymbol put: out contents. match := $=].
>>> + out reset]
>>> + ifFalse: [out nextPut: c]].
>>> + ^env!
>>> Item was added:
>>> + ----- Method: SmalltalkImage>>getEnv: (in category 'os') -----
>>> + getEnv: name
>>> + "Smalltalk os getEnv: 'HOME'"
>>> + ^self os environ at: name asSymbol ifAbsent: [nil]
>>> + !
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