site_archiver@lists.apple.com Delivered-To: installer-dev@lists.apple.com Thread-index: AcbL9VYvlPV3GjfoEduktQANk6659g== Thread-topic: Parsing the output of the "installer" tool User-agent: Microsoft-Entourage/11.2.4.060510 Thanks Luke... Regarding my first query, would it be a safe approach to parse out the output of the "installer" command line tool and update my software updater's progress UI and strings accordingly ? I am envisioning the scenario from the point of view of a new future Apple OS release that could potentially require me to provide an update for my software (e.g. say new features that can be supported for that OS) via my software updater. In case I rely on the installer tool's output for updating my software updater's user interface, I would like to know if the approach of parsing out the command line "installer" tool's output and updating the updater UI would work even then. Or, is there any other safer approach that is recommended ? Steven On 8/29/06 10:39 AM, "Luke Bellandi" <luke@apple.com> wrote:
Hi Steven,
On Aug 28, 2006, at 10:01 PM, Steven Lobo wrote:
Hi:
I provide a software update feature in my software UI that currently checks for updates from a server, downloads updates if necessary and installs the same. My update software is packaged as a Packagemaker package/ metapackage. Once the package is downloaded, I execute the package using the command line "installer" tool from my software UI (via NSTask) similar to this....
installer -pkg /My_Package_Source_Path -target My_Package_Destination_Path -verboseR
The install status output that I receive is as follows
installer: Package name is My Great App installer: Upgrading at base path / installer:PHASE:Preparing for installation installer:PHASE:Preparing the Disk installer:STATUS:Preparing Target Volume installer:%0.010000 installer:PHASE:Preparing My Great App installer:STATUS: installer:PHASE:Installing My Great App installer:STATUS: installer:STATUS:Configuring Installation installer:STATUS:Validating package installer:STATUS:Writing files installer:%0.295857 installer:STATUS:Writing package receipt installer:%0.884000 installer:PHASE:Finishing Installation installer:%0.002000 installer:STATUS:Finishing Installation installer:%1.000000 installer:STATUS: installer:PHASE:The software was successfully installed installer: The upgrade was successful.
I plan to asynchronously monitor this output using the NSFileHandle API's, parse out the "STATUS:", "PHASE:" and "%" values and accordingly update a progress bar in my updater UI. This works out pretty well since most of the output is also localized already by the command line tool.
Queries: -------- 1. Is parsing out the "installer" tool's output a recommended approach or is there a more reliable approach to handle this ? I could not find specific documentation regarding the output and am therefore unsure if such installer state parsing is recommended or and will be supported in future OS releases? 2. The install percentage value just before installation is finished is always "0.002000" (check above). Since this is not in sync with the rest of the percentage status provided, I reckon that this indicates some other status. What does this signify ?
The percentages indicate percent complete for each phase. When the installer notifies you that it's on a new phase, you should reset your percent complete to 0%.
- Luke
TIA
Steven
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