Luca Maltagliati d729053edf mime/multipart: add helper to build content-disposition header contents
This PR adds an helper FileContentDisposition that builds multipart
Content-Disposition header contents with field name and file name,
escaping quotes and escape characters.

The  function is then called in the related helper CreateFormFile.

The new function allows users to add other custom MIMEHeaders,
without having to rewrite the char escaping logic of field name and
file name, which is provided by the new helper.

Fixes #46771

Change-Id: Ifc82a79583feb6dd609ca1e6024e612fb58c05ce
GitHub-Last-Rev: 969f846fa967d2b3eca7a21ee096b299b8a94546
GitHub-Pull-Request: golang/go#63324
Reviewed-on: https://go-review.googlesource.com/c/go/+/531995
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2025-03-12 16:20:01 -07:00
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Files in this directory are data for Go's API checker ("go tool api", in src/cmd/api).

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go1.txt (and similarly named files) are frozen once a version has been
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except.txt lists features that may disappear without breaking true
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Starting with go1.19.txt, each API feature line must end in "#nnnnn"
giving the GitHub issue number of the proposal issue that accepted
the new API. This helps with our end-of-cycle audit of new APIs.
The same requirement applies to next/* (described below), which will
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The next/ directory contains the only files intended to be mutated.
Each file in that directory contains a list of features that may be added
to the next release of Go. The files in this directory only affect the
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When you add a file to the api/next directory, you must add at least one file
under doc/next. See doc/README.md for details.