go/task
1
0
Fork 0
mirror of https://github.com/go-task/task.git synced 2025-06-15 00:15:10 +02:00
Code Issues Releases Activity

Merge branch 'master' into feature/include

Browse Source
This commit is contained in:
Andrey Nering
2018-10-13 16:40:32 -03:00
parent 9a5a1e2253 b77fcd6c8a
commit db280adf55
21 changed files with 1297 additions and 807 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
.editorconfig
View File

@ -9,6 +9,6 @@ trim_trailing_whitespace = true
indent_style = tab indent_style = tab
indent_size = 8 indent_size = 8
[*.{md,yml,yaml,json,toml}] [*.{md,yml,yaml,json,toml,htm,html}]
indent_style = space indent_style = space
indent_size = 2 indent_size = 2

787
README.md
View File

@ -1,789 +1,12 @@
[![Build Status](https://travis-ci.org/go-task/task.svg?branch=master)](https://travis-ci.org/go-task/task) [![Build Status](https://travis-ci.org/go-task/task.svg?branch=master)](https://travis-ci.org/go-task/task)
# Task - A task runner / simpler Make alternative written in Go # Task
> We recently released version 2.0.0 of Task. The Taskfile changed a bit. Task is a task runner / build tool that aims to be simpler and easier to use
Please, check the [Taskfile versions](TASKFILE_VERSIONS.md) document to see than, for example, [GNU Make][make].
what changed and how to upgrade.
Task is a simple tool that allows you to easily run development and build ---
tasks. Task is written in Golang, but can be used to develop any language.
It aims to be simpler and easier to use then [GNU Make][make].
- [Installation](#installation) See [taskfile.org](https://taskfile.org) for documentation.
- [Go](#go)
- [Homebrew](#homebrew)
- [Snap](#snap)
- [Binary](#binary)
- [Usage](#usage)
- [Environment](#environment)
- [OS specific task](#os-specific-task)
- [Task directory](#task-directory)
- [Task dependencies](#task-dependencies)
- [Calling another task](#calling-another-task)
- [Prevent unnecessary work](#prevent-unnecessary-work)
- [Variables](#variables)
- [Dynamic variables](#dynamic-variables)
- [Go's template engine](#gos-template-engine)
- [Help](#help)
- [Silent mode](#silent-mode)
- [Dry run mode](#dry-run-mode)
- [Ignore errors](#ignore-errors)
- [Output syntax](#output-syntax)
- [Watch tasks](#watch-tasks-experimental)
- [Examples](#examples)
- [Alternative task runners](#alternative-task-runners)
## Installation
### Go
If you have a [Golang][golang] environment setup, you can simply run:
```bash
go get -u -v github.com/go-task/task/cmd/task
```
### Homebrew
If you're on macOS and have [Homebrew][homebrew] installed, getting Task is
as simple as running:
```bash
brew install go-task/tap/go-task
```
### Snap
Task is available for [Snapcraft][snapcraft], but keep in mind that your
Linux distribution should allow classic confinement for Snaps to Task work
right:
```bash
sudo snap install task
```
### Install script
We also have a [install script][installscript], which is very useful on
scanarios like CIs. Many thanks to [godownloader][godownloader] for easily
generating this script.
```bash
curl -s https://raw.githubusercontent.com/go-task/task/master/install-task.sh | sh
```
### Binary
Or you can download the binary from the [releases][releases] page and add to
your `PATH`. DEB and RPM packages are also available.
The `task_checksums.txt` file contains the sha256 checksum for each file.
## Usage
Create a file called `Taskfile.yml` in the root of your project.
The `cmds` attribute should contain the commands of a task.
The example below allows compiling a Go app and uses [Minify][minify] to concat
and minify multiple CSS files into a single one.
```yml
version: '2'
tasks:
build:
cmds:
- go build -v -i main.go
assets:
cmds:
- minify -o public/style.css src/css
```
Running the tasks is as simple as running:
```bash
task assets build
```
Task uses [github.com/mvdan/sh](https://github.com/mvdan/sh), a native Go sh
interpreter. So you can write sh/bash commands and it will work even on
Windows, where `sh` or `bash` are usually not available. Just remember any
executable called must be available by the OS or in PATH.
If you ommit a task name, "default" will be assumed.
### Environment
You can specify environment variables that are added when running a command:
```yml
version: '2'
tasks:
build:
cmds:
- echo $hallo
env:
hallo: welt
```
### OS specific task
If you add a `Taskfile_{{GOOS}}.yml` you can override or amend your Taskfile
based on the operating system.
Example:
Taskfile.yml:
```yml
version: '2'
tasks:
build:
cmds:
- echo "default"
```
Taskfile_linux.yml:
```yml
version: '2'
tasks:
build:
cmds:
- echo "linux"
```
Will print out `linux` and not `default`.
Keep in mind that the version of the files should match. Also, when redefining
a task the whole task is replaced, properties of the task are not merged.
It's also possible to have an OS specific `Taskvars.yml` file, like
`Taskvars_windows.yml`, `Taskfile_linux.yml`, or `Taskvars_darwin.yml`. See the
[variables section](#variables) below.
### Task directory
By default, tasks will be executed in the directory where the Taskfile is
located. But you can easily make the task run in another folder informing
`dir`:
```yml
version: '2'
tasks:
serve:
dir: public/www
cmds:
# run http server
- caddy
```
### Task dependencies
You may have tasks that depend on others. Just pointing them on `deps` will
make them run automatically before running the parent task:
```yml
version: '2'
tasks:
build:
deps: [assets]
cmds:
- go build -v -i main.go
assets:
cmds:
- minify -o public/style.css src/css
```
In the above example, `assets` will always run right before `build` if you run
`task build`.
A task can have only dependencies and no commands to group tasks together:
```yml
version: '2'
tasks:
assets:
deps: [js, css]
js:
cmds:
- minify -o public/script.js src/js
css:
cmds:
- minify -o public/style.css src/css
```
If there is more than one dependency, they always run in parallel for better
performance.
If you want to pass information to dependencies, you can do that the same
manner as you would to [call another task](#calling-another-task):
```yml
version: '2'
tasks:
default:
deps:
- task: echo_sth
vars: {TEXT: "before 1"}
- task: echo_sth
vars: {TEXT: "before 2"}
cmds:
- echo "after"
echo_sth:
cmds:
- echo {{.TEXT}}
```
### Calling another task
When a task has many dependencies, they are executed concurrently. This will
often result in a faster build pipeline. But in some situations you may need
to call other tasks serially. In this case, just use the following syntax:
```yml
version: '2'
tasks:
main-task:
cmds:
- task: task-to-be-called
- task: another-task
- echo "Both done"
task-to-be-called:
cmds:
- echo "Task to be called"
another-task:
cmds:
- echo "Another task"
```
Overriding variables in the called task is as simple as informing `vars`
attribute:
```yml
version: '2'
tasks:
main-task:
cmds:
- task: write-file
vars: {FILE: "hello.txt", CONTENT: "Hello!"}
- task: write-file
vars: {FILE: "world.txt", CONTENT: "World!"}
write-file:
cmds:
- echo "{{.CONTENT}}" > {{.FILE}}
```
The above syntax is also supported in `deps`.
### Prevent unnecessary work
If a task generates something, you can inform Task the source and generated
files, so Task will prevent to run them if not necessary.
```yml
version: '2'
tasks:
build:
deps: [js, css]
cmds:
- go build -v -i main.go
js:
cmds:
- minify -o public/script.js src/js
sources:
- src/js/**/*.js
generates:
- public/script.js
css:
cmds:
- minify -o public/style.css src/css
sources:
- src/css/**/*.css
generates:
- public/style.css
```
`sources` and `generates` can be files or file patterns. When both are given,
Task will compare the modification date/time of the files to determine if it's
necessary to run the task. If not, it will just print a message like
`Task "js" is up to date`.
If you prefer this check to be made by the content of the files, instead of
its timestamp, just set the `method` property to `checksum`.
You will probably want to ignore the `.task` folder in your `.gitignore` file
(It's there that Task stores the last checksum).
```yml
version: '2'
tasks:
build:
cmds:
- go build .
sources:
- ./*.go
generates:
- app{{exeExt}}
method: checksum
```
> TIP: method `none` skips any validation and always run the task.
Alternatively, you can inform a sequence of tests as `status`. If no error
is returned (exit status 0), the task is considered up-to-date:
```yml
version: '2'
tasks:
generate-files:
cmds:
- mkdir directory
- touch directory/file1.txt
- touch directory/file2.txt
# test existence of files
status:
- test -d directory
- test -f directory/file1.txt
- test -f directory/file2.txt
```
You can use `--force` or `-f` if you want to force a task to run even when
up-to-date.
Also, `task --status [tasks]...` will exit with a non-zero exit code if any of
the tasks are not up-to-date.
### Variables
When doing interpolation of variables, Task will look for the below.
They are listed below in order of importance (e.g. most important first):
- Variables declared locally in the task
- Variables given while calling a task from another.
(See [Calling another task](#calling-another-task) above)
- Variables declared in the `vars:` option in the `Taskfile`
- Variables available in the `Taskvars.yml` file
- Environment variables
Example of sending parameters with environment variables:
```bash
$ TASK_VARIABLE=a-value task do-something
```
Since some shells don't support above syntax to set environment variables
(Windows) tasks also accepts a similar style when not in the beginning of
the command. Variables given in this form are only visible to the task called
right before.
```bash
$ task write-file FILE=file.txt "CONTENT=Hello, World!" print "MESSAGE=All done!"
```
Example of locally declared vars:
```yml
version: '2'
tasks:
print-var:
cmds:
echo "{{.VAR}}"
vars:
VAR: Hello!
```
Example of global vars in a `Taskfile.yml`:
```yml
version: '2'
vars:
GREETING: Hello from Taskfile!
tasks:
greet:
cmds:
- echo "{{.GREETING}}"
```
Example of `Taskvars.yml` file:
```yml
PROJECT_NAME: My Project
DEV_MODE: production
GIT_COMMIT: {sh: git log -n 1 --format=%h}
```
#### Variables expansion
Variables are expanded 2 times by default. You can change that by setting the
`expansions:` option. Change that will be necessary if you compose many
variables together:
```yml
version: '2'
expansions: 3
vars:
FOO: foo
BAR: bar
BAZ: baz
FOOBAR: "{{.FOO}}{{.BAR}}"
FOOBARBAZ: "{{.FOOBAR}}{{.BAZ}}"
tasks:
default:
cmds:
- echo "{{.FOOBARBAZ}}"
```
#### Dynamic variables
The below syntax (`sh:` prop in a variable) is considered a dynamic variable.
The value will be treated as a command and the output assigned. If there is one
or more trailing newlines, the last newline will be trimmed.
```yml
version: '2'
tasks:
build:
cmds:
- go build -ldflags="-X main.Version={{.GIT_COMMIT}}" main.go
vars:
GIT_COMMIT:
sh: git log -n 1 --format=%h
```
This works for all types of variables.
### Go's template engine
Task parse commands as [Go's template engine][gotemplate] before executing
them. Variables are accessible through dot syntax (`.VARNAME`).
All functions by the Go's [sprig lib](http://masterminds.github.io/sprig/)
are available. The following example gets the current date in a given format:
```yml
version: '2'
tasks:
print-date:
cmds:
- echo {{now | date "2006-01-02"}}
```
Task also adds the following functions:
- `OS`: Returns operating system. Possible values are "windows", "linux",
"darwin" (macOS) and "freebsd".
- `ARCH`: return the architecture Task was compiled to: "386", "amd64", "arm"
or "s390x".
- `splitLines`: Splits Unix (\n) and Windows (\r\n) styled newlines.
- `catLines`: Replaces Unix (\n) and Windows (\r\n) styled newlines with a space.
- `toSlash`: Does nothing on Unix, but on Windows converts a string from `\`
path format to `/`.
- `fromSlash`: Oposite of `toSlash`. Does nothing on Unix, but on Windows
converts a string from `\` path format to `/`.
- `exeExt`: Returns the right executable extension for the current OS
(`".exe"` for Windows, `""` for others).
Example:
```yml
version: '2'
tasks:
print-os:
cmds:
- echo '{{OS}} {{ARCH}}'
- echo '{{if eq OS "windows"}}windows-command{{else}}unix-command{{end}}'
# This will be path/to/file on Unix but path\to\file on Windows
- echo '{{fromSlash "path/to/file"}}'
enumerated-file:
vars:
CONTENT: |
foo
bar
cmds:
- |
cat << EOF > output.txt
{{range $i, $line := .CONTENT | splitLines -}}
{{printf "%3d" $i}}: {{$line}}
{{end}}EOF
```
### Help
Running `task --list` (or `task -l`) lists all tasks with a description.
The following taskfile:
```yml
version: '2'
tasks:
build:
desc: Build the go binary.
cmds:
- go build -v -i main.go
test:
desc: Run all the go tests.
cmds:
- go test -race ./...
js:
cmds:
- minify -o public/script.js src/js
css:
cmds:
- minify -o public/style.css src/css
```
would print the following output:
```bash
* build: Build the go binary.
* test: Run all the go tests.
```
## Silent mode
Silent mode disables echoing of commands before Task runs it.
For the following Taskfile:
```yml
version: '2'
tasks:
echo:
cmds:
- echo "Print something"
```
Normally this will be print:
```sh
echo "Print something"
Print something
```
With silent mode on, the below will be print instead:
```sh
Print something
```
There's three ways to enable silent mode:
* At command level:
```yml
version: '2'
tasks:
echo:
cmds:
- cmd: echo "Print something"
silent: true
```
* At task level:
```yml
version: '2'
tasks:
echo:
cmds:
- echo "Print something"
silent: true
```
* Or globally with `--silent` or `-s` flag
If you want to suppress stdout instead, just redirect a command to `/dev/null`:
```yml
version: '2'
tasks:
echo:
cmds:
- echo "This will print nothing" > /dev/null
```
## Dry run mode
Dry run mode (`--dry`) compiles and steps through each task, printing the commands
that would be run without executing them. This is useful for debugging your Taskfiles.
## Ignore errors
You have the option to ignore errors during command execution.
Given the following Taskfile:
```yml
version: '2'
tasks:
echo:
cmds:
- exit 1
- echo "Hello World"
```
Task will abort the execution after running `exit 1` because the status code `1` stands for `EXIT_FAILURE`.
However it is possible to continue with execution using `ignore_error`:
```yml
version: '2'
tasks:
echo:
cmds:
- cmd: exit 1
ignore_error: true
- echo "Hello World"
```
`ignore_error` can also be set for a task, which mean errors will be supressed
for all commands. But keep in mind this option won't propagate to other tasks
called either by `deps` or `cmds`!
## Output syntax
By default, Task just redirect the STDOUT and STDERR of the running commands
to the shell in real time. This is good for having live feedback for log
printed by commands, but the output can become messy if you have multiple
commands running at the same time and printing lots of stuff.
To make this more customizable, there are currently three different output
options you can choose:
- `interleaved` (default)
- `group`
- `prefixed`
To choose another one, just set it to root in the Taskfile:
```yml
version: '2'
output: 'group'
tasks:
# ...
```
The `group` output will print the entire output of a command once, after it
finishes, so you won't have live feedback for commands that take a long time
to run.
The `prefix` output will prefix every line printed by a command with
`[task-name] ` as the prefix, but you can customize the prefix for a command
with the `prefix:` attribute:
```yml
version: '2'
output: prefixed
tasks:
default:
deps:
- task: print
vars: {TEXT: foo}
- task: print
vars: {TEXT: bar}
- task: print
vars: {TEXT: baz}
print:
cmds:
- echo "{{.TEXT}}"
prefix: "print-{{.TEXT}}"
silent: true
```
```bash
$ task default
[print-foo] foo
[print-bar] bar
[print-baz] baz
```
## Watch tasks
If you give a `--watch` or `-w` argument, task will watch for file changes
and run the task again. This requires the `sources` attribute to be given,
so task know which files to watch.
## Examples
The [go-task/examples][examples] intends to be a collection of Taskfiles for
various use cases.
(It still lacks many examples, though. Contributions are welcome).
## Alternative task runners
- YAML based:
- [rliebz/tusk][tusk]
- Go based:
- [magefile/mage][mage]
- Make based or similar:
- [casey/just][just]
### Sponsors
[![Sponsors](https://opencollective.com/task/sponsors.svg?width=890)][opencollective]
### Backers
[![Backers](https://opencollective.com/task/backers.svg?width=890)][opencollective]
### Contributors
[![Contributors](https://opencollective.com/task/contributors.svg?width=890)][contributors]
[make]: https://www.gnu.org/software/make/ [make]: https://www.gnu.org/software/make/
[releases]: https://github.com/go-task/task/releases
[golang]: https://golang.org/
[gotemplate]: https://golang.org/pkg/text/template/
[tusk]: https://github.com/rliebz/tusk
[mage]: https://github.com/magefile/mage
[just]: https://github.com/casey/just
[sh]: https://github.com/mvdan/sh
[minify]: https://github.com/tdewolff/minify/tree/master/cmd/minify
[examples]: https://github.com/go-task/examples
[snapcraft]: https://snapcraft.io/
[homebrew]: https://brew.sh/
[installscript]: https://github.com/go-task/task/blob/master/install-task.sh
[godownloader]: https://github.com/goreleaser/godownloader
[opencollective]: https://opencollective.com/task
[contributors]: https://github.com/go-task/task/graphs/contributors

13
Taskfile.yml
View File

@ -60,9 +60,10 @@ tasks:
- goreleaser --snapshot --rm-dist - goreleaser --snapshot --rm-dist
generate-install-script: generate-install-script:
desc: Generate install script using https://githbub.com/goreleaser/godownloader desc: Generate install script using https://github.com/goreleaser/godownloader
cmds: cmds:
- godownloader --repo go-task/task -o install-task.sh - godownloader --repo go-task/task -o install-task.sh
- cp ./install-task.sh ./docs/install.sh
ci: ci:
cmds: cmds:
@ -79,3 +80,13 @@ tasks:
cmds: cmds:
- echo '{{.GO_PACKAGES}}' - echo '{{.GO_PACKAGES}}'
silent: true silent: true
docs:install:
desc: Installs docsify to work the on the documentation site
cmds:
- npm install docsify-cli -g
docs:serve:
desc: Serves the documentation site locally
cmds:
- docsify serve docs

7
cmd/task/task.go
View File

@ -87,6 +87,11 @@ func main() {
return return
} }
ctx := context.Background()
if !watch {
ctx = getSignalContext()
}
e := task.Executor{ e := task.Executor{
Force: force, Force: force,
Watch: watch, Watch: watch,
@ -95,7 +100,7 @@ func main() {
Dir: dir, Dir: dir,
Dry: dry, Dry: dry,
Context: getSignalContext(), Context: ctx,
Stdin: os.Stdin, Stdin: os.Stdin,
Stdout: os.Stdout, Stdout: os.Stdout,

0
docs/.nojekyll Normal file
View File

1
docs/CNAME Normal file
View File

@ -0,0 +1 @@
taskfile.org

46
docs/README.md Normal file
View File

@ -0,0 +1,46 @@
# Task
Task is a task runner / build tool that aims to be simpler and easier to use
than, for example, [GNU Make][make].
Since it's written in [Go][go], Task is just a single binary and has no other
dependencies, which means you don't need to mess with any complicated install
setups just to use a build tool.
Once [installed](installation), you just need to describe your build tasks
using a simple [YAML][yaml] schema in a file called `Taskfile.yml`:
```yaml
version: '2'
tasks:
hello:
cmds:
- echo 'Hello World from Task!'
silent: true
```
And call it by running `task hello` from you terminal.
The above example is just the start, you can take a look at the [usage](usage)
guide to check the full schema documentation and Task features.
## Features
- [Easy installation](installation): just download a single binary, add to
$PATH and you're done! Or you can also install using [Homebrew][homebrew] or
[Snapcraft][snapcraft] if you want;
- Available on CIs: by adding [this simple command](installation#install-script)
to install on your CI script and you're done to use Task as part of your CI pipeline;
- Truly cross-platform: while most build tools only work well on Linux or macOS,
Task also supports Windows thanks to [this awesome shell interpreter for Go][sh];
- Great for code generation: you can easily [prevent a task from running](usage#prevent-unnecessary-work)
if a given set of files haven't changed since last run (based either on its
timestamp or content).
[make]: https://www.gnu.org/software/make/
[go]: https://golang.org/
[yaml]: http://yaml.org/
[homebrew]: https://brew.sh/
[snapcraft]: https://snapcraft.io/
[sh]: https://mvdan.cc/sh

8
docs/_sidebar.md Normal file
View File

@ -0,0 +1,8 @@
- [Installation](installation)
- [Usage](usage)
- [Taskfile Versions](taskfile_versions)
- [Examples](examples)
- [Releasing Task](releasing_task)
- [Alternative Task Runners](alternative_task_runners)
- [Sponsors and Backers](sponsors_and_backers)
- [![Github](https://icongram.jgog.in/simple/github.svg?color=808080&size=16)Github](https://github.com/go-task/task)

17
docs/alternative_task_runners.md Normal file
View File

@ -0,0 +1,17 @@
# Alternative task runners
## YAML based
- [rliebz/tusk][tusk]
## Go based
- [magefile/mage][mage]
## Make similar
- [casey/just][just]
[tusk]: https://github.com/rliebz/tusk
[mage]: https://github.com/magefile/mage
[just]: https://github.com/casey/just

7
docs/examples.md Normal file
View File

@ -0,0 +1,7 @@
# Examples
The [go-task/examples][examples] intends to be a collection of Taskfiles for
various use cases.
(It still lacks many examples, though. Contributions are welcome).
[examples]: https://github.com/go-task/examples

BIN
docs/favicon.ico Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 136 KiB

31
docs/index.html Normal file
View File

@ -0,0 +1,31 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Task</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<meta name="description" content="A task runner / simpler Make alternative written in Go">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<link rel="stylesheet" href="//unpkg.com/docsify-themeable/dist/css/theme-simple.css">
</head>
<body>
<div id="app"></div>
<script>
window.$docsify = {
name: 'Task',
repo: 'go-task/task',
ga: 'UA-126286662-1',
themeColor: '#83d0f2',
loadSidebar: true,
auto2top: true,
maxLevel: 3,
subMaxLevel: 3
}
</script>
<script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
<script src="//unpkg.com/docsify/lib/plugins/ga.min.js"></script>
<script src="//unpkg.com/docsify-themeable"></script>
<script src="//unpkg.com/prismjs/components/prism-bash.min.js"></script>
<script src="//unpkg.com/prismjs/components/prism-yaml.min.js"></script>
</body>
</html>

390
docs/install.sh Executable file
View File

@ -0,0 +1,390 @@
#!/bin/sh
set -e
# Code generated by godownloader on 2018-04-07T17:47:38Z. DO NOT EDIT.
#
usage() {
this=$1
cat <<EOF
$this: download go binaries for go-task/task
Usage: $this [-b] bindir [-d] [tag]
-b sets bindir or installation directory, Defaults to ./bin
-d turns on debug logging
[tag] is a tag from
https://github.com/go-task/task/releases
If tag is missing, then the latest will be used.
Generated by godownloader
https://github.com/goreleaser/godownloader
EOF
exit 2
}
parse_args() {
#BINDIR is ./bin unless set be ENV
# over-ridden by flag below
BINDIR=${BINDIR:-./bin}
while getopts "b:dh?" arg; do
case "$arg" in
b) BINDIR="$OPTARG" ;;
d) log_set_priority 10 ;;
h | \?) usage "$0" ;;
esac
done
shift $((OPTIND - 1))
TAG=$1
}
# this function wraps all the destructive operations
# if a curl|bash cuts off the end of the script due to
# network, either nothing will happen or will syntax error
# out preventing half-done work
execute() {
tmpdir=$(mktmpdir)
log_debug "downloading files into ${tmpdir}"
http_download "${tmpdir}/${TARBALL}" "${TARBALL_URL}"
http_download "${tmpdir}/${CHECKSUM}" "${CHECKSUM_URL}"
hash_sha256_verify "${tmpdir}/${TARBALL}" "${tmpdir}/${CHECKSUM}"
srcdir="${tmpdir}"
(cd "${tmpdir}" && untar "${TARBALL}")
install -d "${BINDIR}"
for binexe in "task" ; do
if [ "$OS" = "windows" ]; then
binexe="${binexe}.exe"
fi
install "${srcdir}/${binexe}" "${BINDIR}/"
log_info "installed ${BINDIR}/${binexe}"
done
}
is_supported_platform() {
platform=$1
found=1
case "$platform" in
windows/386) found=0 ;;
windows/amd64) found=0 ;;
darwin/386) found=0 ;;
darwin/amd64) found=0 ;;
linux/386) found=0 ;;
linux/amd64) found=0 ;;
esac
case "$platform" in
darwin/386) found=1 ;;
esac
return $found
}
check_platform() {
if is_supported_platform "$PLATFORM"; then
# optional logging goes here
true
else
log_crit "platform $PLATFORM is not supported. Make sure this script is up-to-date and file request at https://github.com/${PREFIX}/issues/new"
exit 1
fi
}
tag_to_version() {
if [ -z "${TAG}" ]; then
log_info "checking GitHub for latest tag"
else
log_info "checking GitHub for tag '${TAG}'"
fi
REALTAG=$(github_release "$OWNER/$REPO" "${TAG}") && true
if test -z "$REALTAG"; then
log_crit "unable to find '${TAG}' - use 'latest' or see https://github.com/${PREFIX}/releases for details"
exit 1
fi
# if version starts with 'v', remove it
TAG="$REALTAG"
VERSION=${TAG#v}
}
adjust_format() {
# change format (tar.gz or zip) based on ARCH
case ${ARCH} in
windows) FORMAT=zip ;;
esac
true
}
adjust_os() {
# adjust archive name based on OS
true
}
adjust_arch() {
# adjust archive name based on ARCH
true
}
cat /dev/null <<EOF
------------------------------------------------------------------------
https://github.com/client9/shlib - portable posix shell functions
Public domain - http://unlicense.org
https://github.com/client9/shlib/blob/master/LICENSE.md
but credit (and pull requests) appreciated.
------------------------------------------------------------------------
EOF
is_command() {
command -v "$1" >/dev/null
}
echoerr() {
echo "$@" 1>&2
}
log_prefix() {
echo "$0"
}
_logp=6
log_set_priority() {
_logp="$1"
}
log_priority() {
if test -z "$1"; then
echo "$_logp"
return
fi
[ "$1" -le "$_logp" ]
}
log_tag() {
case $1 in
0) echo "emerg" ;;
1) echo "alert" ;;
2) echo "crit" ;;
3) echo "err" ;;
4) echo "warning" ;;
5) echo "notice" ;;
6) echo "info" ;;
7) echo "debug" ;;
*) echo "$1" ;;
esac
}
log_debug() {
log_priority 7 || return 0
echoerr "$(log_prefix)" "$(log_tag 7)" "$@"
}
log_info() {
log_priority 6 || return 0
echoerr "$(log_prefix)" "$(log_tag 6)" "$@"
}
log_err() {
log_priority 3 || return 0
echoerr "$(log_prefix)" "$(log_tag 3)" "$@"
}
log_crit() {
log_priority 2 || return 0
echoerr "$(log_prefix)" "$(log_tag 2)" "$@"
}
uname_os() {
os=$(uname -s | tr '[:upper:]' '[:lower:]')
case "$os" in
msys_nt) os="windows" ;;
esac
echo "$os"
}
uname_arch() {
arch=$(uname -m)
case $arch in
x86_64) arch="amd64" ;;
x86) arch="386" ;;
i686) arch="386" ;;
i386) arch="386" ;;
aarch64) arch="arm64" ;;
armv5*) arch="arm5" ;;
armv6*) arch="arm6" ;;
armv7*) arch="arm7" ;;
esac
echo ${arch}
}
uname_os_check() {
os=$(uname_os)
case "$os" in
darwin) return 0 ;;
dragonfly) return 0 ;;
freebsd) return 0 ;;
linux) return 0 ;;
android) return 0 ;;
nacl) return 0 ;;
netbsd) return 0 ;;
openbsd) return 0 ;;
plan9) return 0 ;;
solaris) return 0 ;;
windows) return 0 ;;
esac
log_crit "uname_os_check '$(uname -s)' got converted to '$os' which is not a GOOS value. Please file bug at https://github.com/client9/shlib"
return 1
}
uname_arch_check() {
arch=$(uname_arch)
case "$arch" in
386) return 0 ;;
amd64) return 0 ;;
arm64) return 0 ;;
armv5) return 0 ;;
armv6) return 0 ;;
armv7) return 0 ;;
ppc64) return 0 ;;
ppc64le) return 0 ;;
mips) return 0 ;;
mipsle) return 0 ;;
mips64) return 0 ;;
mips64le) return 0 ;;
s390x) return 0 ;;
amd64p32) return 0 ;;
esac
log_crit "uname_arch_check '$(uname -m)' got converted to '$arch' which is not a GOARCH value. Please file bug report at https://github.com/client9/shlib"
return 1
}
untar() {
tarball=$1
case "${tarball}" in
*.tar.gz | *.tgz) tar -xzf "${tarball}" ;;
*.tar) tar -xf "${tarball}" ;;
*.zip) unzip "${tarball}" ;;
*)
log_err "untar unknown archive format for ${tarball}"
return 1
;;
esac
}
mktmpdir() {
test -z "$TMPDIR" && TMPDIR="$(mktemp -d)"
mkdir -p "${TMPDIR}"
echo "${TMPDIR}"
}
http_download_curl() {
local_file=$1
source_url=$2
header=$3
if [ -z "$header" ]; then
code=$(curl -w '%{http_code}' -sL -o "$local_file" "$source_url")
else
code=$(curl -w '%{http_code}' -sL -H "$header" -o "$local_file" "$source_url")
fi
if [ "$code" != "200" ]; then
log_debug "http_download_curl received HTTP status $code"
return 1
fi
return 0
}
http_download_wget() {
local_file=$1
source_url=$2
header=$3
if [ -z "$header" ]; then
wget -q -O "$local_file" "$source_url"
else
wget -q --header "$header" -O "$local_file" "$source_url"
fi
}
http_download() {
log_debug "http_download $2"
if is_command curl; then
http_download_curl "$@"
return
elif is_command wget; then
http_download_wget "$@"
return
fi
log_crit "http_download unable to find wget or curl"
return 1
}
http_copy() {
tmp=$(mktemp)
http_download "${tmp}" "$1" "$2" || return 1
body=$(cat "$tmp")
rm -f "${tmp}"
echo "$body"
}
github_release() {
owner_repo=$1
version=$2
test -z "$version" && version="latest"
giturl="https://github.com/${owner_repo}/releases/${version}"
json=$(http_copy "$giturl" "Accept:application/json")
test -z "$json" && return 1
version=$(echo "$json" | tr -s '\n' ' ' | sed 's/.*"tag_name":"//' | sed 's/".*//')
test -z "$version" && return 1
echo "$version"
}
hash_sha256() {
TARGET=${1:-/dev/stdin}
if is_command gsha256sum; then
hash=$(gsha256sum "$TARGET") || return 1
echo "$hash" | cut -d ' ' -f 1
elif is_command sha256sum; then
hash=$(sha256sum "$TARGET") || return 1
echo "$hash" | cut -d ' ' -f 1
elif is_command shasum; then
hash=$(shasum -a 256 "$TARGET" 2>/dev/null) || return 1
echo "$hash" | cut -d ' ' -f 1
elif is_command openssl; then
hash=$(openssl -dst openssl dgst -sha256 "$TARGET") || return 1
echo "$hash" | cut -d ' ' -f a
else
log_crit "hash_sha256 unable to find command to compute sha-256 hash"
return 1
fi
}
hash_sha256_verify() {
TARGET=$1
checksums=$2
if [ -z "$checksums" ]; then
log_err "hash_sha256_verify checksum file not specified in arg2"
return 1
fi
BASENAME=${TARGET##*/}
want=$(grep "${BASENAME}" "${checksums}" 2>/dev/null | tr '\t' ' ' | cut -d ' ' -f 1)
if [ -z "$want" ]; then
log_err "hash_sha256_verify unable to find checksum for '${TARGET}' in '${checksums}'"
return 1
fi
got=$(hash_sha256 "$TARGET")
if [ "$want" != "$got" ]; then
log_err "hash_sha256_verify checksum for '$TARGET' did not verify ${want} vs $got"
return 1
fi
}
cat /dev/null <<EOF
------------------------------------------------------------------------
End of functions from https://github.com/client9/shlib
------------------------------------------------------------------------
EOF
PROJECT_NAME="task"
OWNER=go-task
REPO="task"
BINARY=task
FORMAT=tar.gz
OS=$(uname_os)
ARCH=$(uname_arch)
PREFIX="$OWNER/$REPO"
# use in logging routines
log_prefix() {
echo "$PREFIX"
}
PLATFORM="${OS}/${ARCH}"
GITHUB_DOWNLOAD=https://github.com/${OWNER}/${REPO}/releases/download
uname_os_check "$OS"
uname_arch_check "$ARCH"
parse_args "$@"
check_platform
tag_to_version
adjust_format
adjust_os
adjust_arch
log_info "found version: ${VERSION} for ${TAG}/${OS}/${ARCH}"
NAME=${BINARY}_${OS}_${ARCH}
TARBALL=${NAME}.${FORMAT}
TARBALL_URL=${GITHUB_DOWNLOAD}/${TAG}/${TARBALL}
CHECKSUM=task_checksums.txt
CHECKSUM_URL=${GITHUB_DOWNLOAD}/${TAG}/${CHECKSUM}
execute

53
docs/installation.md Normal file
View File

@ -0,0 +1,53 @@
# Installation
## Binary
Or you can download the binary from the [releases][releases] page and add to
your $PATH. DEB and RPM packages are also available.
The `task_checksums.txt` file contains the sha256 checksum for each file.
## Homebrew
If you're on macOS and have [Homebrew][homebrew] installed, getting Task is
as simple as running:
```bash
brew install go-task/tap/go-task
```
## Snap
Task is available for [Snapcraft][snapcraft], but keep in mind that your
Linux distribution should allow classic confinement for Snaps to Task work
right:
```bash
sudo snap install task
```
## Go
If you have a [Go][go] environment setup, you can simply run:
```bash
go get -u -v github.com/go-task/task/cmd/task
```
## Install script
We also have a [install script][installscript], which is very useful on
scanarios like CIs. Many thanks to [godownloader][godownloader] for allowing
easily generating this script.
```bash
curl -s https://taskfile.org/install.sh | sh
```
> This method will download the binary on the local `./bin` directory by default.
[go]: https://golang.org/
[snapcraft]: https://snapcraft.io/
[homebrew]: https://brew.sh/
[installscript]: https://github.com/go-task/task/blob/master/install-task.sh
[releases]: https://github.com/go-task/task/releases
[godownloader]: https://github.com/goreleaser/godownloader

0
RELEASING_TASK.md → docs/releasing_task.md
View File

16
docs/sponsors_and_backers.md Normal file
View File

@ -0,0 +1,16 @@
# Sponsors and Backers
## Sponsors
[![Sponsors](https://opencollective.com/task/sponsors.svg?width=890)][opencollective]
## Backers
[![Backers](https://opencollective.com/task/backers.svg?width=890)][opencollective]
## Contributors
[![Contributors](https://opencollective.com/task/contributors.svg?width=890)][contributors]
[opencollective]: https://opencollective.com/task
[contributors]: https://github.com/go-task/task/graphs/contributors

18
TASKFILE_VERSIONS.md → docs/taskfile_versions.md
View File

@ -1,9 +1,9 @@
# Taskfile version # Taskfile Versions
The Taskfile syntax and features changed with time. This document explains what The Taskfile syntax and features changed with time. This document explains what
changed on each version and how to upgrade your Taskfile. changed on each version and how to upgrade your Taskfile.
# What the Taskfile version mean ## What the Taskfile version mean
The Taskfile version follows the Task version. E.g. the change to Taskfile The Taskfile version follows the Task version. E.g. the change to Taskfile
version `2` means that Task `v2.0.0` should be release to support it. version `2` means that Task `v2.0.0` should be release to support it.
@ -18,7 +18,7 @@ available, but not `3.0.0+`.
In the first version of the `Taskfile`, the `version:` key was not available, In the first version of the `Taskfile`, the `version:` key was not available,
because the tasks was in the root of the YAML document. Like this: because the tasks was in the root of the YAML document. Like this:
```yml ```yaml
echo: echo:
cmds: cmds:
- echo "Hello, World!" - echo "Hello, World!"
@ -37,7 +37,7 @@ At version 2, we introduced the `version:` key, to allow us to envolve Task
with new features without breaking existing Taskfiles. The new syntax is as with new features without breaking existing Taskfiles. The new syntax is as
follows: follows:
```yml ```yaml
version: '2' version: '2'
tasks: tasks:
@ -49,7 +49,7 @@ tasks:
Version 2 allows you to write global variables directly in the Taskfile, Version 2 allows you to write global variables directly in the Taskfile,
if you don't want to create a `Taskvars.yml`: if you don't want to create a `Taskvars.yml`:
```yml ```yaml
version: '2' version: '2'
vars: vars:
@ -72,7 +72,7 @@ The variable priority order changed to the following:
A new global option was added to configure the number of variables expansions A new global option was added to configure the number of variables expansions
(which default to 2): (which default to 2):
```yml ```yaml
version: '2' version: '2'
expansions: 3 expansions: 3
@ -96,7 +96,7 @@ Version 2.1 includes a global `output` option, to allow having more control
over how commands output are printed to the console over how commands output are printed to the console
(see [documentation][output] for more info): (see [documentation][output] for more info):
```yml ```yaml
version: '2' version: '2'
output: prefixed output: prefixed
@ -109,9 +109,9 @@ tasks:
``` ```
From this version it's not also possible to ignore errors of a command or task From this version it's not also possible to ignore errors of a command or task
(check documentatio [here][ignore_errors]): (check documentation [here][ignore_errors]):
```yml ```yaml
version: '2' version: '2'
tasks: tasks:

669
docs/usage.md Normal file
View File

@ -0,0 +1,669 @@
# Usage
## Getting started
Create a file called `Taskfile.yml` in the root of your project.
The `cmds` attribute should contain the commands of a task.
The example below allows compiling a Go app and uses [Minify][minify] to concat
and minify multiple CSS files into a single one.
```yaml
version: '2'
tasks:
build:
cmds:
- go build -v -i main.go
assets:
cmds:
- minify -o public/style.css src/css
```
Running the tasks is as simple as running:
```bash
task assets build
```
Task uses [github.com/mvdan/sh](https://github.com/mvdan/sh), a native Go sh
interpreter. So you can write sh/bash commands and it will work even on
Windows, where `sh` or `bash` are usually not available. Just remember any
executable called must be available by the OS or in PATH.
If you ommit a task name, "default" will be assumed.
## Environment
You can specify environment variables that are added when running a command:
```yaml
version: '2'
tasks:
build:
cmds:
- echo $hallo
env:
hallo: welt
```
## OS specific task
If you add a `Taskfile_{{GOOS}}.yml` you can override or amend your Taskfile
based on the operating system.
Example:
Taskfile.yml:
```yaml
version: '2'
tasks:
build:
cmds:
- echo "default"
```
Taskfile_linux.yml:
```yaml
version: '2'
tasks:
build:
cmds:
- echo "linux"
```
Will print out `linux` and not `default`.
Keep in mind that the version of the files should match. Also, when redefining
a task the whole task is replaced, properties of the task are not merged.
It's also possible to have an OS specific `Taskvars.yml` file, like
`Taskvars_windows.yml`, `Taskfile_linux.yml`, or `Taskvars_darwin.yml`. See the
[variables section](#variables) below.
## Task directory
By default, tasks will be executed in the directory where the Taskfile is
located. But you can easily make the task run in another folder informing
`dir`:
```yaml
version: '2'
tasks:
serve:
dir: public/www
cmds:
# run http server
- caddy
```
## Task dependencies
You may have tasks that depend on others. Just pointing them on `deps` will
make them run automatically before running the parent task:
```yaml
version: '2'
tasks:
build:
deps: [assets]
cmds:
- go build -v -i main.go
assets:
cmds:
- minify -o public/style.css src/css
```
In the above example, `assets` will always run right before `build` if you run
`task build`.
A task can have only dependencies and no commands to group tasks together:
```yaml
version: '2'
tasks:
assets:
deps: [js, css]
js:
cmds:
- minify -o public/script.js src/js
css:
cmds:
- minify -o public/style.css src/css
```
If there is more than one dependency, they always run in parallel for better
performance.
If you want to pass information to dependencies, you can do that the same
manner as you would to [call another task](#calling-another-task):
```yaml
version: '2'
tasks:
default:
deps:
- task: echo_sth
vars: {TEXT: "before 1"}
- task: echo_sth
vars: {TEXT: "before 2"}
cmds:
- echo "after"
echo_sth:
cmds:
- echo {{.TEXT}}
```
## Calling another task
When a task has many dependencies, they are executed concurrently. This will
often result in a faster build pipeline. But in some situations you may need
to call other tasks serially. In this case, just use the following syntax:
```yaml
version: '2'
tasks:
main-task:
cmds:
- task: task-to-be-called
- task: another-task
- echo "Both done"
task-to-be-called:
cmds:
- echo "Task to be called"
another-task:
cmds:
- echo "Another task"
```
Overriding variables in the called task is as simple as informing `vars`
attribute:
```yaml
version: '2'
tasks:
main-task:
cmds:
- task: write-file
vars: {FILE: "hello.txt", CONTENT: "Hello!"}
- task: write-file
vars: {FILE: "world.txt", CONTENT: "World!"}
write-file:
cmds:
- echo "{{.CONTENT}}" > {{.FILE}}
```
The above syntax is also supported in `deps`.
## Prevent unnecessary work
If a task generates something, you can inform Task the source and generated
files, so Task will prevent to run them if not necessary.
```yaml
version: '2'
tasks:
build:
deps: [js, css]
cmds:
- go build -v -i main.go
js:
cmds:
- minify -o public/script.js src/js
sources:
- src/js/**/*.js
generates:
- public/script.js
css:
cmds:
- minify -o public/style.css src/css
sources:
- src/css/**/*.css
generates:
- public/style.css
```
`sources` and `generates` can be files or file patterns. When both are given,
Task will compare the modification date/time of the files to determine if it's
necessary to run the task. If not, it will just print a message like
`Task "js" is up to date`.
If you prefer this check to be made by the content of the files, instead of
its timestamp, just set the `method` property to `checksum`.
You will probably want to ignore the `.task` folder in your `.gitignore` file
(It's there that Task stores the last checksum).
```yaml
version: '2'
tasks:
build:
cmds:
- go build .
sources:
- ./*.go
generates:
- app{{exeExt}}
method: checksum
```
> TIP: method `none` skips any validation and always run the task.
Alternatively, you can inform a sequence of tests as `status`. If no error
is returned (exit status 0), the task is considered up-to-date:
```yaml
version: '2'
tasks:
generate-files:
cmds:
- mkdir directory
- touch directory/file1.txt
- touch directory/file2.txt
# test existence of files
status:
- test -d directory
- test -f directory/file1.txt
- test -f directory/file2.txt
```
You can use `--force` or `-f` if you want to force a task to run even when
up-to-date.
Also, `task --status [tasks]...` will exit with a non-zero exit code if any of
the tasks are not up-to-date.
## Variables
When doing interpolation of variables, Task will look for the below.
They are listed below in order of importance (e.g. most important first):
- Variables declared locally in the task
- Variables given while calling a task from another.
(See [Calling another task](#calling-another-task) above)
- Variables declared in the `vars:` option in the `Taskfile`
- Variables available in the `Taskvars.yml` file
- Environment variables
Example of sending parameters with environment variables:
```bash
$ TASK_VARIABLE=a-value task do-something
```
Since some shells don't support above syntax to set environment variables
(Windows) tasks also accepts a similar style when not in the beginning of
the command. Variables given in this form are only visible to the task called
right before.
```bash
$ task write-file FILE=file.txt "CONTENT=Hello, World!" print "MESSAGE=All done!"
```
Example of locally declared vars:
```yaml
version: '2'
tasks:
print-var:
cmds:
echo "{{.VAR}}"
vars:
VAR: Hello!
```
Example of global vars in a `Taskfile.yml`:
```yaml
version: '2'
vars:
GREETING: Hello from Taskfile!
tasks:
greet:
cmds:
- echo "{{.GREETING}}"
```
Example of `Taskvars.yml` file:
```yaml
PROJECT_NAME: My Project
DEV_MODE: production
GIT_COMMIT: {sh: git log -n 1 --format=%h}
```
### Variables expansion
Variables are expanded 2 times by default. You can change that by setting the
`expansions:` option. Change that will be necessary if you compose many
variables together:
```yaml
version: '2'
expansions: 3
vars:
FOO: foo
BAR: bar
BAZ: baz
FOOBAR: "{{.FOO}}{{.BAR}}"
FOOBARBAZ: "{{.FOOBAR}}{{.BAZ}}"
tasks:
default:
cmds:
- echo "{{.FOOBARBAZ}}"
```
### Dynamic variables
The below syntax (`sh:` prop in a variable) is considered a dynamic variable.
The value will be treated as a command and the output assigned. If there is one
or more trailing newlines, the last newline will be trimmed.
```yaml
version: '2'
tasks:
build:
cmds:
- go build -ldflags="-X main.Version={{.GIT_COMMIT}}" main.go
vars:
GIT_COMMIT:
sh: git log -n 1 --format=%h
```
This works for all types of variables.
## Go's template engine
Task parse commands as [Go's template engine][gotemplate] before executing
them. Variables are accessible through dot syntax (`.VARNAME`).
All functions by the Go's [sprig lib](http://masterminds.github.io/sprig/)
are available. The following example gets the current date in a given format:
```yaml
version: '2'
tasks:
print-date:
cmds:
- echo {{now | date "2006-01-02"}}
```
Task also adds the following functions:
- `OS`: Returns operating system. Possible values are "windows", "linux",
"darwin" (macOS) and "freebsd".
- `ARCH`: return the architecture Task was compiled to: "386", "amd64", "arm"
or "s390x".
- `splitLines`: Splits Unix (\n) and Windows (\r\n) styled newlines.
- `catLines`: Replaces Unix (\n) and Windows (\r\n) styled newlines with a space.
- `toSlash`: Does nothing on Unix, but on Windows converts a string from `\`
path format to `/`.
- `fromSlash`: Oposite of `toSlash`. Does nothing on Unix, but on Windows
converts a string from `\` path format to `/`.
- `exeExt`: Returns the right executable extension for the current OS
(`".exe"` for Windows, `""` for others).
Example:
```yaml
version: '2'
tasks:
print-os:
cmds:
- echo '{{OS}} {{ARCH}}'
- echo '{{if eq OS "windows"}}windows-command{{else}}unix-command{{end}}'
# This will be path/to/file on Unix but path\to\file on Windows
- echo '{{fromSlash "path/to/file"}}'
enumerated-file:
vars:
CONTENT: |
foo
bar
cmds:
- |
cat << EOF > output.txt
{{range $i, $line := .CONTENT | splitLines -}}
{{printf "%3d" $i}}: {{$line}}
{{end}}EOF
```
## Help
Running `task --list` (or `task -l`) lists all tasks with a description.
The following taskfile:
```yaml
version: '2'
tasks:
build:
desc: Build the go binary.
cmds:
- go build -v -i main.go
test:
desc: Run all the go tests.
cmds:
- go test -race ./...
js:
cmds:
- minify -o public/script.js src/js
css:
cmds:
- minify -o public/style.css src/css
```
would print the following output:
```bash
* build: Build the go binary.
* test: Run all the go tests.
```
## Silent mode
Silent mode disables echoing of commands before Task runs it.
For the following Taskfile:
```yaml
version: '2'
tasks:
echo:
cmds:
- echo "Print something"
```
Normally this will be print:
```sh
echo "Print something"
Print something
```
With silent mode on, the below will be print instead:
```sh
Print something
```
There's three ways to enable silent mode:
* At command level:
```yaml
version: '2'
tasks:
echo:
cmds:
- cmd: echo "Print something"
silent: true
```
* At task level:
```yaml
version: '2'
tasks:
echo:
cmds:
- echo "Print something"
silent: true
```
* Or globally with `--silent` or `-s` flag
If you want to suppress stdout instead, just redirect a command to `/dev/null`:
```yaml
version: '2'
tasks:
echo:
cmds:
- echo "This will print nothing" > /dev/null
```
## Dry run mode
Dry run mode (`--dry`) compiles and steps through each task, printing the commands
that would be run without executing them. This is useful for debugging your Taskfiles.
## Ignore errors
You have the option to ignore errors during command execution.
Given the following Taskfile:
```yaml
version: '2'
tasks:
echo:
cmds:
- exit 1
- echo "Hello World"
```
Task will abort the execution after running `exit 1` because the status code `1` stands for `EXIT_FAILURE`.
However it is possible to continue with execution using `ignore_error`:
```yaml
version: '2'
tasks:
echo:
cmds:
- cmd: exit 1
ignore_error: true
- echo "Hello World"
```
`ignore_error` can also be set for a task, which mean errors will be supressed
for all commands. But keep in mind this option won't propagate to other tasks
called either by `deps` or `cmds`!
## Output syntax
By default, Task just redirect the STDOUT and STDERR of the running commands
to the shell in real time. This is good for having live feedback for log
printed by commands, but the output can become messy if you have multiple
commands running at the same time and printing lots of stuff.
To make this more customizable, there are currently three different output
options you can choose:
- `interleaved` (default)
- `group`
- `prefixed`
To choose another one, just set it to root in the Taskfile:
```yaml
version: '2'
output: 'group'
tasks:
# ...
```
The `group` output will print the entire output of a command once, after it
finishes, so you won't have live feedback for commands that take a long time
to run.
The `prefix` output will prefix every line printed by a command with
`[task-name] ` as the prefix, but you can customize the prefix for a command
with the `prefix:` attribute:
```yaml
version: '2'
output: prefixed
tasks:
default:
deps:
- task: print
vars: {TEXT: foo}
- task: print
vars: {TEXT: bar}
- task: print
vars: {TEXT: baz}
print:
cmds:
- echo "{{.TEXT}}"
prefix: "print-{{.TEXT}}"
silent: true
```
```bash
$ task default
[print-foo] foo
[print-bar] bar
[print-baz] baz
```
## Watch tasks
If you give a `--watch` or `-w` argument, task will watch for file changes
and run the task again. This requires the `sources` attribute to be given,
so task know which files to watch.
[gotemplate]: https://golang.org/pkg/text/template/
[minify]: https://github.com/tdewolff/minify/tree/master/cmd/minify

5
internal/taskfile/read/taskfile.go
View File

@ -14,9 +14,12 @@ import (
// Taskfile reads a Taskfile for a given directory // Taskfile reads a Taskfile for a given directory
func Taskfile(dir string) (*taskfile.Taskfile, error) { func Taskfile(dir string) (*taskfile.Taskfile, error) {
path := filepath.Join(dir, "Taskfile.yml") path := filepath.Join(dir, "Taskfile.yml")
if _, err := os.Stat(path); err != nil {
return nil, fmt.Errorf(`No Taskfile.yml found. Use "task --init" to create a new one`)
}
t, err := readTaskfile(path) t, err := readTaskfile(path)
if err != nil { if err != nil {
return nil, fmt.Errorf(`No Taskfile.yml found. Use "task --init" to create a new one`) return nil, err
} }
for namespace, path := range t.Includes { for namespace, path := range t.Includes {

6
status.go
View File

@ -12,9 +12,9 @@ import (
// Status returns an error if any the of given tasks is not up-to-date // Status returns an error if any the of given tasks is not up-to-date
func (e *Executor) Status(calls ...taskfile.Call) error { func (e *Executor) Status(calls ...taskfile.Call) error {
for _, call := range calls { for _, call := range calls {
t, ok := e.Taskfile.Tasks[call.Task] t, err := e.CompiledTask(call)
if !ok { if err != nil {
return &taskNotFoundError{taskName: call.Task} return err
} }
isUpToDate, err := isTaskUpToDate(e.Context, t) isUpToDate, err := isTaskUpToDate(e.Context, t)
if err != nil { if err != nil {

28
watch.go
View File

@ -2,7 +2,10 @@ package task
import ( import (
"context" "context"
"os"
"os/signal"
"strings" "strings"
"syscall"
"time" "time"
"github.com/go-task/task/internal/taskfile" "github.com/go-task/task/internal/taskfile"
@ -40,6 +43,8 @@ func (e *Executor) watchTasks(calls ...taskfile.Call) error {
return err return err
} }
closeOnInterrupt(w)
go func() { go func() {
for { for {
select { select {
@ -66,6 +71,7 @@ func (e *Executor) watchTasks(calls ...taskfile.Call) error {
e.Logger.Errf("%v", err) e.Logger.Errf("%v", err)
} }
case <-w.Closed: case <-w.Closed:
cancel()
return return
} }
} }
@ -84,6 +90,19 @@ func (e *Executor) watchTasks(calls ...taskfile.Call) error {
return w.Start(time.Second) return w.Start(time.Second)
} }
func isContextError(err error) bool {
return err == context.Canceled || err == context.DeadlineExceeded
}
func closeOnInterrupt(w *watcher.Watcher) {
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt, os.Kill, syscall.SIGTERM)
go func() {
<-ch
w.Close()
}()
}
func (e *Executor) registerWatchedFiles(w *watcher.Watcher, calls ...taskfile.Call) error { func (e *Executor) registerWatchedFiles(w *watcher.Watcher, calls ...taskfile.Call) error {
oldWatchedFiles := make(map[string]struct{}) oldWatchedFiles := make(map[string]struct{})
for f := range w.WatchedFiles() { for f := range w.WatchedFiles() {
@ -140,12 +159,3 @@ func (e *Executor) registerWatchedFiles(w *watcher.Watcher, calls ...taskfile.Ca
} }
return nil return nil
} }
func isContextError(err error) bool {
switch err {
case context.Canceled, context.DeadlineExceeded:
return true
default:
return false
}
}