One of the proposals in #23328
This PR introduces a simple expression calculator
(templates/eval/eval.go), it can do basic expression calculations.
Many untested template helper functions like `Mul` `Add` can be replaced
by this new approach.
Then these `Add` / `Mul` / `percentage` / `Subtract` / `DiffStatsWidth`
could all use this `Eval`.
And it provides enhancements for Golang templates, and improves
readability.
Some examples:
----
* Before: `{{Add (Mul $glyph.Row 12) 12}}`
* After: `{{Eval $glyph.Row "*" 12 "+" 12}}`
----
* Before: `{{if lt (Add $i 1) (len $.Topics)}}`
* After: `{{if Eval $i "+" 1 "<" (len $.Topics)}}`
## FAQ
### Why not use an existing expression package?
We need a highly customized expression engine:
* do the calculation on the fly, without pre-compiling
* deal with int/int64/float64 types, to make the result could be used in
Golang template.
* make the syntax could be used in the Golang template directly
* do not introduce too much complex or strange syntax, we just need a
simple calculator.
* it needs to strictly follow Golang template's behavior, for example,
Golang template treats all non-zero values as truth, but many 3rd
packages don't do so.
### What's the benefit?
* Developers don't need to add more `Add`/`Mul`/`Sub`-like functions,
they were getting more and more.
Now, only one `Eval` is enough for all cases.
* The new code reads better than old `{{Add (Mul $glyph.Row 12) 12}}`,
the old one isn't familiar to most procedural programming developers
(eg, the Golang expression syntax).
* The `Eval` is fully covered by tests, many old `Add`/`Mul`-like
functions were never tested.
### The performance?
It doesn't use `reflect`, it doesn't need to parse or compile when used
in Golang template, the performance is as fast as native Go template.
### Is it too complex? Could it be unstable?
The expression calculator program is a common homework for computer
science students, and it's widely used as a teaching and practicing
purpose for developers. The algorithm is pretty well-known.
The behavior can be clearly defined, it is stable.
Change all license headers to comply with REUSE specification.
Fix #16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
* Prettify number of issues
- Use the PrettyNumber function to add commas in large amount of issues.
* Use client-side formatting
* prettify on both server and client
* remove unused i18n entries
* handle more cases, support other int types in PrettyNumber
* specify locale to avoid issues with node default locale
* remove superfluos argument
* introduce template helper, octicon tweaks, js refactor
* Update modules/templates/helper.go
* Apply some suggestions.
* Add comment
* Update templates/user/dashboard/issues.tmpl
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
* Added type sniffer.
* Switched content detection from base to typesniffer.
* Added GuessContentType to Blob.
* Moved image info logic to client.
Added support for SVG images in diff.
* Restore old blocked svg behaviour.
* Added missing image formats.
* Execute image diff only when container is visible.
* add margin to spinner
* improve BIN tag on image diffs
* Default to render view.
* Show image diff on incomplete diff.
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Lauris BH <lauris@nix.lv>
* Change to display SVG files as images
* Remove unsafe styles from SVG CSP
* Add integration test to test SVG headers
* Add config setting to disable SVG rendering
* Add test for img tag when loading SVG image
* Remove the Raw view button for svg files since we don't fully support this
* Fix copyright year
* Rename and move config setting
* Add setting to cheat sheet in docs
* Fix so that comment matches cheat sheet
* Add allowing styles in CSP based on pull request feedback
* Re-enable raw button since we show SVG styles now
* Change so that SVG files are editable
* Add UI to toggle between source and rendered image for SVGs
* Change to show blame button for SVG images
* Fix to update ctx data
* Add test for DetectContentType when file is longer than sniffLen
Co-authored-by: Jonathan Tran <jon@allspice.io>
Co-authored-by: Kyle D <kdumontnu@gmail.com>
* Fix panic in BasicAuthDecode
If the string does not contain ":" that function would run into an
`index out of range [1] with length 1` error. prevent that.
* Update BasicAuthDecode()
Co-authored-by: 6543 <6543@obermui.de>
* Direct avatar rendering
This adds new template helpers for avatar rendering which output image
elements with direct links to avatars which makes them cacheable by the
browsers.
This should be a major performance improvment for pages with many avatars.
* fix avatars of other user's profile pages
* fix top border on user avatar name
* uncircle avatars
* remove old incomplete avatar selector
* use title attribute for name and add it back on blame
* minor refactor
* tweak comments
* fix url path join and adjust test to new result
* dedupe functions
* Use a simple format for the big number on ui
Signed-off-by: a1012112796 <1012112796@qq.com>
* make fmt
* Apply review suggestion @silverwind
* Change name 2
* make fmt
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
speed up page generation by making avatar lookup occur at the browser
not at page generation
* Protect against evil email address ".."
* hash the complete email address
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-Authored-By: Lauris BH <lauris@nix.lv>
* display ui time with customize time location
* fix lint
* rename UILocation to DefaultUILocation
* move time related functions to modules/timeutil
* fix tests
* fix tests
* fix build
* fix swagger
* Convert files to utf-8 for indexing
* Move utf8 functions to modules/base
* Bump repoIndexerLatestVersion to 3
* Add tests for base/encoding.go
* Changes to pass gosimple
* Move UTF8 funcs into new modules/charset package
* Moved conf assets into options folder
* Dropped old bindata
* Started to integrate options bindata and accessors
* Do not enforce a builtin app.ini
* Replaced bindata calls with options
* Dropped bindata task from makefile, it's the generate task now
* Always embedd app.ini to provide sane config defaults
* Use sane defaults for the configuration
* Defined default value for SSH_KEYGEN_PATH
* Dropped "NEVER EVER MODIFY THIS FILE" header from app.ini
* Fixed new paths in latest test additions
* Drop bindata with make clean task
* Set more proper default values
* Remove unused custom-alphabet feature of random string generator
Fix random string generator
Random string generator should return error if it fails to read random data via crypto/rand
* Fixes variable (un)initialization mixed assign
Update test GetRandomString
