Commit graph

691 commits

Author SHA1 Message Date
Christian Oliff
be0d4efc3d tpl: Always load GitHub Gists over HTTPS 2019-08-01 13:57:41 +02:00
XhmikosR
f7f549e3a7 Fix assorted typos 2019-08-01 13:55:48 +02:00
Bjørn Erik Pedersen
53077b0da5
Merge pull request #6149 from bep/sort-caseinsensitive
Implement lexicographically string sorting
2019-08-01 10:19:19 +02:00
Bjørn Erik Pedersen
e5f2299741 Block symlink dir traversal for /static
This is in line with how it behaved before, but it was lifted a little for the project mount for Hugo Modules,
but that could create hard-to-detect loops.
2019-07-25 11:27:25 +02:00
Bjørn Erik Pedersen
9f5a92078a
Add Hugo Modules
This commit implements Hugo Modules.

This is a broad subject, but some keywords include:

* A new `module` configuration section where you can import almost anything. You can configure both your own file mounts nd the file mounts of the modules you import. This is the new recommended way of configuring what you earlier put in `configDir`, `staticDir` etc. And it also allows you to mount folders in non-Hugo-projects, e.g. the `SCSS` folder in the Bootstrap GitHub project.
* A module consists of a set of mounts to the standard 7 component types in Hugo: `static`, `content`, `layouts`, `data`, `assets`, `i18n`, and `archetypes`. Yes, Theme Components can now include content, which should be very useful, especially in bigger multilingual projects.
* Modules not in your local file cache will be downloaded automatically and even "hot replaced" while the server is running.
* Hugo Modules supports and encourages semver versioned modules, and uses the minimal version selection algorithm to resolve versions.
* A new set of CLI commands are provided to manage all of this: `hugo mod init`,  `hugo mod get`,  `hugo mod graph`,  `hugo mod tidy`, and  `hugo mod vendor`.

All of the above is backed by Go Modules.

Fixes #5973
Fixes #5996
Fixes #6010
Fixes #5911
Fixes #5940
Fixes #6074
Fixes #6082
Fixes #6092
2019-07-24 09:35:53 +02:00
Bjørn Erik Pedersen
c624a77992 tpl/collections: Add Merge function
Merges two maps recursively and returns a new one. Merge is case-insensitive.

Fixes #5992
2019-07-15 20:47:35 +02:00
Bjørn Erik Pedersen
b2a3d4644b
tpl/tplimpl: Regenerate templates 2019-06-26 22:39:32 +02:00
Mark Mandel
88c8a15be1 Pagination - do not render href if no next item
When using a html link checker with Hugo, this template consistently causes errors, as it renders `href=""` attributes when next/previous is disabled.

This change makes it so that the `href` attribute is not rendered at all if `HasNext` is false - which is better semantically, and makes link checking far easier.
2019-06-26 22:38:30 +02:00
Bjørn Erik Pedersen
e8a716b23a tpl/collections: Fix slice type handling in sort
The `sort` template func was producing a `[]page.Page` which did not work in `.Paginate`.

Fixes #6023
2019-06-10 08:32:44 +02:00
Bjørn Erik Pedersen
8d898ad667 tpl/collections: Unwrap any interface value in sort and where
Hugo `0.55.0` introduced some new interface types for `Page` etc.

This worked great in general, but there were cases where this would fail in `where` and `sort`.

One such example would be sorting by `MenuItem.Page.Date` where `Page` on `MenuItem` was a small subset of the bigger `page.Page` interface.

This commit fixes that by unwrapping such interface values.

Fixes #5989
2019-06-09 16:54:36 +02:00
Anton Harniakou
fb007e9ae5 tpl/collections: Convert numeric values to float64 and compare them
Fixes #5685
2019-05-30 11:32:58 +02:00
Bruno Amaral
d1cf53f5f4 Remove references to Google+
According to google, this is no longer supported and structured data should be used instead: https://support.google.com/webmasters/answer/6083347?hl=en
2019-05-26 19:24:45 +02:00
Rodolfo Carvalho
e22b3f54c3 tpl: Fix internal templates usage of safeHTMLAttr
The `safeHTMLAttr` function operates on a full attribute definition, not
just within the attribute value.

Docs: https://gohugo.io/functions/safehtmlattr/

For `opengraph.html`, run the whole `content` HTML attribute through
`safeHTMLAttr`. That will preserve `+` signs in formatted dates.

For `vimeo_simple.html`, `safeHTMLAttr` was in the context of an
attribute value, thus having no effect. In this case we could replace it
with `safeURL`, but since the code is coming from an API it is safer to
just let Go's template engine sanitize the value as it already does with
`provider_url`.

Fixes #5236 (no need to change Go upstream)
Related to #5246
2019-05-17 16:00:54 +02:00
Bjørn Erik Pedersen
2838d58b1d
i18n: Move the package below /langs
To get fewer top level packages.
2019-05-04 18:25:56 +02:00
Bjørn Erik Pedersen
66b143a01d tpl/compare: Fix nil compare in eq/ne for interface values
Fixes #5905
2019-04-29 18:43:44 +02:00
Cameron Moore
4f93f8c670 tpl: Fix hugo package name and add godocs 2019-04-27 22:44:57 +02:00
Cameron Moore
f76e50118b tpl: Provide more detailed errors in Where 2019-04-27 09:54:22 +02:00
Bjørn Erik Pedersen
69a56420ae hugolib: Avoid recloning of shortcode templates
```bash
benchmark                                    old ns/op     new ns/op     delta
BenchmarkSiteNew/Bundle_with_image-4         14572242      14382188      -1.30%
BenchmarkSiteNew/Bundle_with_JSON_file-4     13683922      13738196      +0.40%
BenchmarkSiteNew/Multiple_languages-4        41912231      25192494      -39.89%

benchmark                                    old allocs     new allocs     delta
BenchmarkSiteNew/Bundle_with_image-4         57496          57493          -0.01%
BenchmarkSiteNew/Bundle_with_JSON_file-4     57492          57501          +0.02%
BenchmarkSiteNew/Multiple_languages-4        242422         118809         -50.99%

benchmark                                    old bytes     new bytes     delta
BenchmarkSiteNew/Bundle_with_image-4         3845077       3844065       -0.03%
BenchmarkSiteNew/Bundle_with_JSON_file-4     3627442       3627798       +0.01%
BenchmarkSiteNew/Multiple_languages-4        13963502      7543885       -45.97%
```

Fixes #5890
2019-04-24 12:37:57 +02:00
Bjørn Erik Pedersen
7fbfedf013
tpl/collections: Return error on invalid input in in
See #5875
2019-04-19 08:58:12 +02:00
Bjørn Erik Pedersen
06f56fc983 tpl/collections: Make Pages etc. work with the in func
Fixes #5875
2019-04-18 23:42:01 +02:00
Bjørn Erik Pedersen
d7a67dcb51 tpl/collections: Make Pages etc. work in uniq
Fixes #5852
2019-04-18 16:50:13 +02:00
Bjørn Erik Pedersen
2957795f52 tpl/tplimpl: Handle late transformation of templates
Fixes #5865
2019-04-16 21:24:09 +02:00
Bjørn Erik Pedersen
56550d1e44
hugolib: Fix shortcode namespace issue
Fixes #5863
2019-04-15 18:31:56 +02:00
Bjørn Erik Pedersen
27a8049da7
tpl/tplimpl: Replace deprecated .GetParam usage
Fixes #5834
2019-04-09 16:39:12 +02:00
Bjørn Erik Pedersen
612a06f067 Misc paginator adjustments
* Rewind paginator for server mode
* Add some more related tests.
* Replace the clumsy scratch constructs in internal paginator template with variables

See #5825
2019-04-08 11:02:12 +02:00
Jim McDonald
3a62d54745 hugolib: Consider summary in front matter for .Summary
Add the ability to have a `summary` page variable that overrides
the auto-generated summary.  Logic for obtaining summary becomes:

  * if summary divider is present in content, use the text above it
  * if summary variables is present in page metadata, use that
  * auto-generate summary from first _x_ words of the content

Fixes #5800
2019-04-05 19:11:04 +02:00
Bjørn Erik Pedersen
a55640de8e
tpl: Allow the partial template func to return any type
This commit adds support for return values in partials.

This means that you can now do this and similar:

    {{ $v := add . 42 }}
    {{ return $v }}

Partials without a `return` statement will be rendered as before.

This works for both `partial` and `partialCached`.

Fixes #5783
2019-04-02 10:30:24 +02:00
Bjørn Erik Pedersen
b5f39d23b8 all: Apply staticcheck recommendations 2019-03-24 16:14:51 +01:00
Bjørn Erik Pedersen
d30e845485
Run gofmt -s 2019-03-23 20:15:06 +01:00
Bjørn Erik Pedersen
597e418cb0
Make Page an interface
The main motivation of this commit is to add a `page.Page` interface to replace the very file-oriented `hugolib.Page` struct.
This is all a preparation step for issue  #5074, "pages from other data sources".

But this also fixes a set of annoying limitations, especially related to custom output formats, and shortcodes.

Most notable changes:

* The inner content of shortcodes using the `{{%` as the outer-most delimiter will now be sent to the content renderer, e.g. Blackfriday.
  This means that any markdown will partake in the global ToC and footnote context etc.
* The Custom Output formats are now "fully virtualized". This removes many of the current limitations.
* The taxonomy list type now has a reference to the `Page` object.
  This improves the taxonomy template `.Title` situation and make common template constructs much simpler.

See #5074
Fixes #5763
Fixes #5758
Fixes #5090
Fixes #5204
Fixes #4695
Fixes #5607
Fixes #5707
Fixes #5719
Fixes #3113
Fixes #5706
Fixes #5767
Fixes #5723
Fixes #5769
Fixes #5770
Fixes #5771
Fixes #5759
Fixes #5776
Fixes #5777
Fixes #5778
2019-03-23 18:51:22 +01:00
Bjørn Erik Pedersen
e54213f525
tpl/tplimpl: Fix mutex unlock 2019-03-16 09:40:27 +01:00
Bjørn Erik Pedersen
02eaddc2fb
tpl/tplimpl: Fix template truth logic
Before this commit, due to a bug in Go's `text/template` package, this would print different output for typed nil interface values:

```
{{ if .AuthenticatedUser }}User is authenticated!{{ else }}{{ end }}
{{ if not .AuthenticatedUser }}{{ else }}}User is authenticated!{{ end }}
```

This commit works around this by wrapping every `if` and `with` with a custom `getif` template func with truth logic that matches `not`, `and` and `or`.

Those 3 template funcs from Go's stdlib are now pulled into Hugo's source tree and adjusted to support custom zero values, e.g. types that implement `IsZero`.

This means that you can now do:

```
{{ with .Date }}{{ . }}{{ end }}
```

And it would work as expected.

Fixes #5738
2019-03-06 22:52:38 +01:00
Anton Harniakou
908692fae5 Support nested keys/fields with missing values with the where function
Before this commit `where` would produce an error and bail building the
site. Now, `where` simply skips an element of a collection and does not
add it to the final result.

Closes #5637
Closes #5416
2019-02-06 19:53:34 +01:00
Iskander (Alex) Sharipov
7201042946 tpl: Fix strings.HasPrefix args order 2019-02-02 01:26:05 +01:00
Bjørn Erik Pedersen
ddc6d4e30f
tpl/data: Adjust tests
See #5643
2019-02-01 08:54:30 +01:00
Anthony Fok
6a2bfcbec8
tpl/data: Prevent getJSON and getCSV fetch failure from aborting build
Fixes #5643
2019-02-01 08:52:29 +01:00
Bjørn Erik Pedersen
c52045bbb3 Fix some inline shortcode issues
Fixes #5645
Fixes #5653
2019-01-31 19:08:19 +01:00
Elliot Murphy
526b5b1c49 Fix OpenGraph image fallback to site params
Signed-off-by: Elliot Murphy <statik@users.noreply.github.com>
2019-01-25 18:14:10 +01:00
Bjørn Erik Pedersen
e1a66c7343 Fix Params case handling in the new site global
Fixes #5615
2019-01-20 12:42:24 +00:00
Bjørn Erik Pedersen
ce8a09a4c0 resources: Move resource interfaces into its own package 2019-01-02 14:25:37 +01:00
Bjørn Erik Pedersen
669ada4367 resource: Move resource processors into sub-packages 2019-01-02 14:25:37 +01:00
Cameron Moore
9e4f9e0bb6 tpl: Fix reflect
Fixes #5564
2018-12-28 10:41:46 +01:00
Bjørn Erik Pedersen
c24f3ae22b
Make docshelper run again
Fixes #5568
2018-12-27 10:08:44 +01:00
Bjørn Erik Pedersen
be58c7b9c8
tpl/transform: Include options in cache key
See #5555
2018-12-23 21:34:17 +01:00
Bjørn Erik Pedersen
ce06bdb16a
Rename CSV option from comma to delimiter
See #5555
2018-12-23 21:09:09 +01:00
Bjørn Erik Pedersen
094709e105
tpl/transform: Simplify transform.Unmarshal func
See #5428
2018-12-23 16:43:04 +01:00
Bjørn Erik Pedersen
a574469797
Add CSV support to transform.Unmarshal
Fixes #5555
2018-12-23 16:33:21 +01:00
Bjørn Erik Pedersen
822dc627a1
tpl/transform: Add transform.Unmarshal func
Fixes #5428
2018-12-23 10:02:42 +01:00
Bjørn Erik Pedersen
64b6b29075 tpl: Fix case handling in cast params
Fixes #5538
2018-12-19 13:19:22 +01:00
Cameron Moore
c84f506f8e tpl: Add reflect namespace
Add a reflect namespace that offers a two boolean functions for
testing if a value is a map or slice.

Fixes #4081
2018-12-07 23:29:37 +01:00
Bjørn Erik Pedersen
931a132450
tpl/hugo: Use the correct Hugo var
See #5467
2018-12-06 14:57:56 +01:00
Bjørn Erik Pedersen
831d23cb4d Add tpl/site and tpl/hugo
This means that the current `.Site` and ´.Hugo` is available as a globals, so you can do `site.IsServer`, `hugo.Version` etc.

Fixes #5470
Fixes #5467
Fixes #5503
2018-12-06 14:37:25 +01:00
Cameron Moore
30a7c9ea37 tpl: Add godoc packages comments
Also fix package name in tpl/templates.
2018-11-30 08:56:30 +01:00
Cameron Moore
ed698e94c1 tpl/path: Add tests 2018-11-27 19:17:35 +01:00
Bjørn Erik Pedersen
89e2716d29
tpl: Regenerate templates 2018-11-27 18:15:55 +01:00
Max Arnold
aba2647c15 tpl: Fix whitespace issue
Introduced  in #5276.
2018-11-27 18:15:10 +01:00
Bjørn Erik Pedersen
f37c5a2567 tpl: Add "param" shortcode
Fixes #4010
2018-11-27 17:34:03 +01:00
Cameron Moore
112461fded tpl/collections: Add float64 support to where
Fixes #5466
2018-11-27 09:04:02 +01:00
Bjørn Erik Pedersen
f9b4eb4f39 Handle themes in the new file cache (for images, assets)
In the newly consolidated file cache implementation, we forgot that we also look in the theme(s) for assets (SCSS transformations etc.), which is not good for Netlify and the demo sites.

Fixes #5460
2018-11-23 21:09:00 +01:00
Bjørn Erik Pedersen
3c29c5af8e
cache/filecache: Add a cache prune func
Fixes #5439
2018-11-14 23:14:51 +01:00
Bjørn Erik Pedersen
33502667fb
cache/filecache: Add a filecache root dir
This is just a safe guard to make sure we don't evict/remove files that do not belong to the cache.
2018-11-14 23:14:51 +01:00
Bjørn Erik Pedersen
f7aeaa6129 Add a consolidated file cache
This commits reworks how file caching is performed in Hugo. Now there is only one way, and it can be configured.

This is the default configuration:

```toml
[caches]
[caches.getjson]
dir = ":cacheDir"
maxAge = -1
[caches.getcsv]
dir = ":cacheDir"
maxAge = -1
[caches.images]
dir = ":resourceDir/_gen"
maxAge = -1
[caches.assets]
dir = ":resourceDir/_gen"
maxAge = -1
```

You can override any of these cache setting in your own `config.toml`.

The placeholders explained:

`:cacheDir`: This is the value of the `cacheDir` config option if set (can also be set via OS env variable `HUGO_CACHEDIR`). It will fall back to `/opt/build/cache/hugo_cache/` on Netlify, or a `hugo_cache` directory below the OS temp dir for the others.
`:resourceDir`: This is the value of the `resourceDir` config option.

`maxAge` is the time in seconds before a cache entry will be evicted, -1 means forever and 0 effectively turns that particular cache off.

This means that if you run your builds on Netlify, all caches configured with `:cacheDir` will be saved and restored on the next build. For other CI vendors, please read their documentation. For an CircleCI example, see 6c3960a8f4/.circleci/config.yml

Fixes #5404
2018-11-13 14:19:42 +01:00
Ian Lance Taylor
a8cb1b07b4 tpl: Fix test to pass with gccgo
When run under gccgo, the test looks for the name that gccgo gives to
a thunk method.  This name is not normally visible, but can be seen
when using reflect.FuncForPC as this code does.  That name changed in
https://golang.org/cl/89555.  Change the test to work with both the
old name "$thunk0" and the new name "thunk0".

Fixes golang/go#28669
2018-11-09 08:54:08 +01:00
Bjørn Erik Pedersen
79a06aa4b6
tpl/collections: Properly handle pointer types in complement/symdiff
We cannot compare them by values, because that gets `hash of unhashable type` for the prime use case.
2018-11-07 09:29:13 +01:00
Bjørn Erik Pedersen
488776b649 tpl/collections: Add collections.SymDiff
Fixes #5410
2018-11-06 16:51:49 +01:00
Bjørn Erik Pedersen
42d8dfc8c8 tpl/collections: Add collections.Complement
Fixes #5400
2018-11-06 08:48:58 +01:00
Bjørn Erik Pedersen
4b7d3e57a4 Make WARN the new default log log level
This commit also pulls down the log level for a set of WARN statements to INFO. There should be no ERRORs or WARNINGs in a regular Hugo build. That is the story about the Boy Who Cried Wolf.

Since the WARN log is now more visible, this commit also improves on some of them, most notable the "layout not found", which now would look something like this:

```bash
WARN 2018/11/02 09:02:18 Found no layout for "home", language "en", output format "CSS": create a template below /layouts with one of these filenames: index.en.css.css, home.en.css.css, list.en.css.css, index.css.css, home.css.css, list.css.css, index.en.css, home.en.css, list.en.css, index.css, home.css, list.css, _default/index.en.css.css, _default/home.en.css.css, _default/list.en.css.css, _default/index.css.css, _default/home.css.css, _default/list.css.css, _default/index.en.css, _default/home.en.css, _default/list.en.css, _default/index.css, _default/home.css, _default/list.css
```

Fixes #5203
2018-11-03 12:06:23 +01:00
Bjørn Erik Pedersen
4f3c095963
Revert "tpl: Update Jsonify to return pretty-print output"
This reverts commit 5a52cd5f92.

Closes #5394
2018-11-02 19:03:48 +01:00
Bjørn Erik Pedersen
61f210dd7a tpl: Fix the docshelper 2018-11-02 13:36:09 +01:00
Bjørn Erik Pedersen
1d18eb0574 Add file (line/col) info to ref/relref errors
See #5371
2018-11-01 21:06:35 +01:00
Bjørn Erik Pedersen
3a786a248d tpl: Fix BOM issue in templates
Fixes #4895
2018-10-30 18:12:14 +01:00
Bjørn Erik Pedersen
2d7709d155 tpl: Handle truncated identifiers in Go template errors
Long identifiers will give errors on the format:

```bash
 _default/single.html:5:14: executing "main" at <.ThisIsAVeryLongTitl...>: can't evaluate field ThisIsAVeryLongTitle
```

Hugo use this value to match the "base template or not", so we need to strip the "...".

Fixes #5346
2018-10-24 13:54:04 +02:00
Bjørn Erik Pedersen
889aca054a Run gofmt -s 2018-10-24 00:12:32 +02:00
Bjørn Erik Pedersen
6636cf1bea
Resolve error handling/parser related TODOs
See #5324
2018-10-23 19:41:22 +02:00
Bjørn Erik Pedersen
f669ef6bec
herrors: Improve handling of JSON errors
`*json.UnmarshalTypeError` and `*json.SyntaxError` has a byte `Offset`, so use that.

This commit also reworks/simplifies the errror line matching logic. This also makes the file reading unbuffered, but that should be fine in this error case.

See #5324
2018-10-23 14:35:43 +02:00
Bjørn Erik Pedersen
d1661b823a
hugolib: Continue the file context/line number errors work
See #5324
2018-10-22 20:46:14 +02:00
Bjørn Erik Pedersen
eb038cfa0a
Convert the rest to new page parser code paths
And remove some now unused code.

See #5324
2018-10-22 20:46:14 +02:00
Bjørn Erik Pedersen
129c27ee6e
parser/metadecoders: Consolidate the metadata decoders
See #5324
2018-10-22 20:46:13 +02:00
Sean Prashad
5a52cd5f92 tpl: Update Jsonify to return pretty-print output
Fixes #5040
2018-10-21 23:36:35 +02:00
Bjørn Erik Pedersen
0fe4ff1875
tpl: Improve the Execute panic error message
See #5327
2018-10-17 08:25:57 +02:00
Bjørn Erik Pedersen
35fbfb19a1
commands: Show server error info in browser
The main item in this commit is showing of errors with a file context when running `hugo server`.

This can be turned off: `hugo server --disableBrowserError` (can also be set in `config.toml`).

But to get there, the error handling in Hugo needed a revision. There are some items left TODO for commits soon to follow, most notable errors in content and config files.

Fixes #5284
Fixes #5290
See #5325
See #5324
2018-10-16 22:10:56 +02:00
Akshay Raj Gollahalli
c21e5179ce tpl: Use .Lastmod in embedded schema template
Fixes #5320
2018-10-16 11:52:32 +02:00
Bjørn Erik Pedersen
31a8bb8c07 common/maps: Improve append in Scratch
This commit consolidates the reflective collections handling in `.Scratch` vs the `tpl` package so they use the same code paths.

This commit also adds support for a corner case where a typed slice is appended to a nil or empty `[]interface{}`.

Fixes #5275
2018-10-08 12:30:50 +02:00
Bjørn Erik Pedersen
8e825ddf5b
Revert "tpl: Fix baseof.html in error message"
I need to rethink this.

This reverts commit 646a52a5c5.
2018-10-07 21:08:41 +02:00
Bjørn Erik Pedersen
646a52a5c5
tpl: Fix baseof.html in error message
This fix should also make the template loadin slightly faster, as we avoid to reparse the baseof.html files more than one time.

Fixes #5288
2018-10-06 12:04:29 +02:00
Kaushal Modi
6818170308 Render Markdown in figure shortcode "caption" and "attr" params
Fixes https://github.com/gohugoio/hugo/issues/4406.
2018-10-03 09:55:53 +03:00
Kaushal Modi
c5279064df Re-organize the figure shortcode for better readability 2018-10-03 09:55:53 +03:00
Cameron Moore
0d5110d033 tpl: Cast IsSet key to int for indexed types
Don't assume that the user sends an int as the key when checking against
indexed types.

Fixes #3681
2018-10-03 09:36:27 +03:00
Bjørn Erik Pedersen
10ac2ec446 tpl/collections: Fix handling of different interface types in Slice
In Hugo `0.49` we improved type support in `slice`. This has an unfortunate side effect in that `resources.Concat` now expects something that can resolve to `resource.Resources`.

This worked for most situations, but when you try to `slice` different `Resource` objects, you would be getting `[]interface {}` and not `resource.Resources`. And `concat` would fail:

```bash
error calling Concat: slice []interface {} not supported in concat.
```

This commit fixes that by simplifying the type checking logic in `Slice`:

* If the first item implements the `Slicer` interface, we try that
* If the above fails or the first item does not implement `Slicer`, we just return the `[]interface {}`

Fixes #5269
2018-10-02 23:54:16 +03:00
Cameron Moore
ce264b936c tpl: Add a delimiter parameter to lang.NumFmt
The original implementation of NumFmt did not take into account that the
options delimiter (a space) could be a valid option.  Adding a delim
parameter seems like the simplest, safest, and most flexible way to
solve this oversight in a backwards-compatible way.

Fixes #5260
2018-10-02 17:41:48 +03:00
Ricardo N Feliciano
cae07ce84b tpl/collections: Allow first function to return an empty slice
Fixes #5235
2018-09-22 20:58:46 +02:00
Ricardo N Feliciano
4f9c109dc5 tpl/opengraph: Use safeHTMLAttr instead of safeHTML for HTML attributes
Fixes #5236
2018-09-22 00:36:15 +02:00
Bjørn Erik Pedersen
e27fd4c1b8 tpl/collections: Add collections.Append
Before this commit you would typically use `.Scratch.Add` to manually create slices in a loop.

With variable overwrite in Go 1.11, we can do better. This commit adds the `append` template func.

A made-up example:

```bash
{{ $p1 := index .Site.RegularPages 0 }}{{ $p2 := index .Site.RegularPages 1 }}
{{ $pages := slice }}
{{ if true }}
  {{ $pages = $pages | append $p2 $p1 }}
{{ end }}
```

Note that with 2 slices as arguments, the two examples below will give the same result:

```bash
{{ $s1 := slice "a" "b" | append (slice "c" "d") }}
{{ $s2 := slice "a" "b" | append "c" "d" }}
```

Both of the above will give `[]string{a, b, c, d}`.

This commit also improves the type handling in the `slice` template function. Now `slice "a" "b"` will give a `[]string` slice. The old behaviour was to return a `[]interface{}`.

Fixes #5190
2018-09-14 10:12:08 +02:00
Bjørn Erik Pedersen
43d446522a tpl/data: Revise error handling in getJSON and getCSV
The most important part being: Log ERROR, but do not stop the build on remote errors.

Fixes #5076
2018-09-11 16:46:25 +02:00
Cameron Moore
4f72e79120 tpl: Show error on union or intersect of uncomparable types
Fixes #3820
2018-09-11 14:09:29 +02:00
Bjørn Erik Pedersen
fe6676c775 tpl/collections: Improve type handling in collections.Slice
Fixes #5188
2018-09-10 09:19:01 +02:00
Bjørn Erik Pedersen
7a97d3e6bc
tpl/collections: Allow pointer receiver in Group
See #4865
2018-09-08 21:56:36 +02:00
Bjørn Erik Pedersen
6667c6d743 tpl/collections: Add group template func
This extends the page grouping in Hugo with a template function that allows for ad-hoc grouping.

A made-up example:

```
{{ $cool := where .Site.RegularPages "Params.cool" true | group "cool" }}
{{ $blue := where .Site.RegularPages "Params.blue" true | group "blue" }}
{{ $paginator := .Paginate (slice $cool $blue) }}
```

Closes #4865
2018-09-08 20:20:26 +02:00
Bjørn Erik Pedersen
e5d66074ce
tpl/strings: Add strings.FirstUpper
Fixes #5174
2018-09-07 09:08:14 +02:00
Cameron Moore
f6f22ad944 tpl: Fix golint godoc issues 2018-09-07 08:25:51 +02:00