[Filesystem] Add the readFile() method
#54173
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fabpot
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Thank you @derrabus. |
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This PR was squashed before being merged into the 7.2 branch. Discussion ---------- [AssetMapper] Leverage Filesystem | Q | A | ------------- | --- | Branch? | 7.2 | Bug fix? | no | New feature? | no | Deprecations? | no | Issues | Fix #... | License | MIT Continue the work started in #54173 & #54724 to replace php file functions (`mkdir`, `file_get_contents` , `file_put_contents`, `unlink`) by Filesystem methods Commits ------- a1bb5a2 [AssetMapper] Leverage Filesystem
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Our
Filesystemclass is a tool for leveraging PHP's native filesystem functions is a sane way.For example, it provides a method
dumpFile()which attempts to write the contents of a string to a file and throws if that attempt fails. However, it lacks a method to read the content of a file. The native function for this task,file_get_contents()comes with a couple of traps that I don't want to think about or step into when working with a file system:file_get_contents()returnsfalseand triggers anE_WARNING. I need to check the return value againstfalseand if I want feedback on the failure, I need to work with custom error handlers. Yuck.file_get_contents()is almost certainly a mistake that I would want to get an exception for. However,file_get_contents()will return an empty string in that case. Fun times.With this PR, I'm proposing to add a
readFile()method that either returns the content of a given file or throws anIOException. Furthermore, I'm dogfooding this method in components that already depend on the Filesystem component.