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Improved help system.

Signed-off-by: Tony Tkacik <tonydamage@gmail.com>
This commit is contained in:
Tony Tkáčik 2017-06-20 15:55:07 +02:00
parent ff4e509d1c
commit 89010fd209
9 changed files with 233 additions and 133 deletions

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@ -1,7 +1,8 @@
#!/usr/bin/env nux-runner
### Portable *nix environment by tonydamage
## Portable *nix environment by tonydamage
## status - Show status of nux-env installation
## status::
## Show status of nux-env installation
task.status() {
echo nux-env folder: $NUX_ENV_DIR
pushd $NUX_ENV_DIR > /dev/null
@ -9,7 +10,8 @@ task.status() {
popd > /dev/null
}
## update - pulls latest nux-env from repository.
## update::
## pulls latest nux-env from repository.
task.update() {
pushd $NUX_ENV_DIR > /dev/null
git stash
@ -18,17 +20,17 @@ task.update() {
popd > /dev/null
}
## install Install nux-env recommended binaries if not present
##
## install::
## Install nux-env recommended binaries if not present
task.install() {
:
}
## help.inc <inc>
## help library:: <inc>
## Displays help for specified nuxs-env library.
##
task.help.inc() {
task.help.library() {
local name="$1"
nux.help.comment $NUX_INC_DIR/$name.inc.sh
}

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@ -1,9 +1,38 @@
#!/bin/bash
###
### nux-runner is environment runner for nux-env enhanced bash scripts
### and provides out of the box support for task-style scripts
### (similar in usage such as apt, git).
### *nux-runner* is wrapped bash interpreter for *nux-env* enhanced bash scripts
### and provides out of the box support for command-style scripts (similar in
### usage such as apt, git) with following features out of the box:
###
### task selection::
### Automaticly selects correct tasks, displays help if
### task does not exists.
### logging::
### Using *nux.log* function and changing output using
### *debug*, *trace* prefixes
### help display::
### Automated help display when no arguments are provided.
### Uses source comments as source for help.
###
###
### # Writing nux-runner scripts
###
### *nux-runner* scripts are basicly bash scripts with some additional conventions.
###
###
###
###
###
### 1. Shebang::
### Shebang (*#!*) at the start of file is *#!/usr/bin/env nux-runner*
### 2. Tasks::
### Script usually does only defines functions in form task.{taskname}
### where taskname
### ## Defining a task
###
###
###
###
@ -16,39 +45,61 @@ readonly NUX_RUNNER=$NUX_RUNNER_BIN_DIR/nux-runner;
nux.include nux-runner
##
## Commands provided by *nux-runner*:
## debug Runs specified task with debug messages enabled.
task.debug() {
nux.log.level debug
nux-runner.run "$@"
}
## trace Runs specified task with debug & trace enabled.
task.trace() {
nux.log.level trace
nux-runner.run "$@"
}
## help Display this help
task.help() {
echo Usage: $NC_Bold$NUX_SCRIPTNAME ${NC_No}${NC_White}\<command\>${NC_No} [\<options\>]
echo
grep -E "^\#\#\#( |$)" "$NUX_SCRIPT" | cut -d\# -f4- | cut -d" " -f2- | nux.help.shelldoc
echo
echo "Available Commands: "
nux.help.comment "$NUX_SCRIPT"
nux.help.comment "$NUX_RUNNER"
nux.exec.optional task.help.detailed
}
## Additional commands provided by *nux-runner*:
### *nux-runner* automaticly provides following tasks to any script it executes:
##
## debug:: <task> [<task arguments>]
## Runs specified task with debug messages enabled.
task.debug() {
nux.log.level debug
nuxr.run "$@"
}
## trace:: <task> [<task arguments>]
## Runs specified task with debug & trace enabled.
task.trace() {
nux.log.level trace
nuxr.run "$@"
}
## help:: [command]
## Display help for command or topic if specified. Otherwise displays
## documentation.
task.help() {
nuxr.task.help "$@"
}
## config:: [type] name [value]
## Reads or writes application specific configuration option.
###
### There are 3 *types* of configuration:
### dist::
### Distribution provided configuration. Read-only configuration.
### global::
### Global (user-specific) provided configuration. This configuration is
### usually stored in *~/.config/{app-name}/config.yml*
### local::
### Local configuration.
###
### The resulting application configuration is merger of these three (if available)
### with following preference (most-specific one):
### local, global, dist
###
task.config() {
nux.notimplemented task.config
}
task.() {
task.help
}
###
###
if [ "$NUX_RUNNER" = "$(realpath "$0")" ]
then
readonly NUX_SCRIPT=$1;
@ -61,12 +112,13 @@ fi
if [ -n "$NUX_SCRIPT" ]; then
# Determines script
readonly NUX_SCRIPTNAME=$(basename $NUX_SCRIPT)
nux-runner.run "$@"
readonly NUX_APPNAME=$(basename $NUX_SCRIPT)
nuxr.run "$@"
else
echo Usage: nux-runner [script] [task] [options]
echo
grep "^\#\#\# " "$NUX_RUNNER" | cut -d\# -f4-
grep "^\#\#" "$NUX_RUNNER" | sed -re "s/^#+ ?(.*)/\1/gi" | nux.help.shelldoc
echo
fi

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@ -1,30 +1,30 @@
#!/usr/bin/env nux-runner
### # nuxfs - Filesystem layout manager
###
### *nuxfs* command uses file structure definition present in *.nuxfs* file
### to understand intented state of directory / filesystem of user.
###
### This definition is not only used to create filesystem hierarchy, checkout
### git repositories but also to verify state of filesystem afterwards.
###
### ## Example of .nuxfs file in home directory
###
### *dir* github
### *git* nux-env https://github.com/tonydamage/nux-env.git
### *git* bats https://github.com/sstephenson/bats.git
### *enddir*
### *link* .bashrc github/nux-env/bashrc
###
### This *.nuxfs* file describes simple home structure. If we execute
### **nuxfs apply** command, it will performs filesystem changes in order to
### recreate structure described in *.nuxfs* file. In case of example it is
### equivalent of executing:
### mkdir -p github
### git clone https://github.com/tonydamage/nux-env.git github/nux-env
### git clone https://github.com/sstephenson/bats.git
### ln -s github/nux-env/bashrc .bashrc
###
## # nuxfs - Filesystem layout manager
##
## *nuxfs* command uses file structure definition present in *.nuxfs* file
## to understand intented state of directory / filesystem of user.
##
## This definition is not only used to create filesystem hierarchy, checkout
## git repositories but also to verify state of filesystem afterwards.
##
## ## Example of .nuxfs file in home directory
##
## *dir* github
## *git* nux-env https://github.com/tonydamage/nux-env.git
## *git* bats https://github.com/sstephenson/bats.git
## *enddir*
## *link* .bashrc github/nux-env/bashrc
##
## This *.nuxfs* file describes simple home structure. If we execute
## **nuxfs apply** command, it will performs filesystem changes in order to
## recreate structure described in *.nuxfs* file. In case of example it is
## equivalent of executing:
## mkdir -p github
## git clone https://github.com/tonydamage/nux-env.git github/nux-env
## git clone https://github.com/sstephenson/bats.git
## ln -s github/nux-env/bashrc .bashrc
##
local WORKDIR=$(pwd)
local TEMPLATE_DIR=$NUX_ENV_DIR/templates
@ -37,9 +37,14 @@ nux.use nuxfs
GIT_BIN=$(which git)
## check Verifies that directories and files matches the specification
## in *.nuxfs* definition
##
## Available commands:
## check:: [<subtree>]
## Verifies that directories and files matches the specification
## in *.nuxfs* definition
###
### Check is non-descructive operation, whose only output is printing out
### information
task.check() {
nuxfs.dsl.process "$@";
}
@ -48,22 +53,25 @@ task.describe() {
nuxfs.dsl.process "$@";
}
## apply Creates missing files as specified in *.nuxfs* definition.
## **DOES NOT MODIFY** existing files breaking specification.
## apply:: [<subtree>]
## Creates missing files as specified in *.nuxfs* definition.
## **DOES NOT MODIFY** existing files breaking specification.
##
task.apply() {
nuxfs.dsl.process "$@";
}
## fix Performs apply and tries to fix warnings and errors and files as
## specified in nuxfs definition. This operation **DOES MODIFY**
## existing files.
## fix:: [<subtree>]
## Performs apply and tries to fix warnings and errors and files as
## specified in nuxfs definition. This operation **DOES MODIFY**
## existing files.
##
task.fix() {
nuxfs.dsl.process "$@";
}
## help.dsl Displays help for **nuxfs DSL language**
## help dsl::
## Displays help for **nuxfs DSL language**
##
task.help.dsl() {
nux.help.comment "$NUX_INC_DIR/dsl/nuxfs.dsl"

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@ -1,6 +1,5 @@
#!/bin/bash
type ffmpeg > /dev/null 2>&1 && FFMPEG_OR_LIBAV=ffmpeg
type avconv > /dev/null 2>&1 && FFMPEG_OR_LIBAV=avconv

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@ -39,6 +39,11 @@
## unless **enddir** keyword is encountered.
##
.block dir name
dir.entered() {
if nux.check.file.exists "$abs_path/.nuxfs"; then
source "$abs_path/.nuxfs"
fi
}
## link <name> <target>
## Defines a symbolik link with specified *name*, which points to
@ -63,8 +68,24 @@
##
.keyword exists name
## should-not-exists <match>
## Defines a requirement for file not to be present.
## *nuxfs check*: error will be raised if file exists.
## *nuxfs fix*: files which match the match will be deleted.
##
.keyword should-not-exists
##
.keyword should-not-exists match
should-not-exists.check() {
test $(find "$(dirname "$abs_path")" -maxdepth 1 -iname "$match" | wc -l) -eq 0
}
should-not-exists.check.failed() {
find "$(dirname "$rel_path")" -maxdepth 1 -iname "$match" | while read f
do
nux.dsl.error $f Should not exists, but is present.
done
}
.keyword cathegorize match min delimiter
cathegorize.check() {
@ -129,6 +150,7 @@ sdir() {
dir "$@"
enddir
}
##
## #Using custom keywords
##
@ -183,22 +205,3 @@ sdir() {
.error does not exists.
fi
}
dir.entered() {
if nux.check.file.exists "$abs_path/.nuxfs"; then
source "$abs_path/.nuxfs"
fi
}
should-not-exists.check() {
nux.log trace "Checking existence of $NC_White$abs_path$NC_No"
if nux.check.file.exists "$abs_path"; then
return 1
fi
return 0
}
should-not-exists.check.failed() {
for f in "$rel_path"; do
nux.dsl.error $f Should not exists, but is present.
done
}

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@ -1,10 +1,7 @@
.use-dsl nuxfs.apply
should-not-exists.check.failed() {
for f in "$rel_path"; do
rm -r "$f"
nux.dsl.info $f Deleted.
done
find "$(dirname "$rel_path")" -maxdepth 1 -iname "$id" -delete
}
cathegorize.process.file() {

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@ -74,7 +74,7 @@ NC_LOG_id_trace=5
## debug
## trace
##
## nux.log <level> <message>
## nux.log:: <level> <message>
## Outputs log message to *STDERR*. LOG messages are filtered out based on
## level. Use *nux.log.level* to specify which messages should be displayed.
##
@ -91,7 +91,7 @@ function nux.log {
}
## nux.log.level <level>
## nux.log.level:: <level>
## Sets maximum level of details to be logged.
##
function nux.log.level {
@ -108,8 +108,7 @@ function nux.echo.warning {
echo -e "${NC_warning}"$@" ${NC_No}";
}
## nux.use <library>
##
## nux.use:: <library>
function nux.use {
local incfile="$1.inc.sh"
source "$NUX_INC_DIR/$incfile"
@ -120,7 +119,12 @@ function nux.fatal {
exit -1;
}
## nux.require <binary> [<common-package>]
## nux.notimplemented:: <feature-id>
function nux.notimplemented {
nux.fatal "$@: is not imlemented."
}
## nux.require:: <binary> [<common-package>]
function nux.require {
local binary=$1;
local package=${2:-$1}
@ -137,9 +141,10 @@ function nux.include {
source "$NUX_INC_DIR/$incfile"
}
## nux.check.function <name>
## nux.check.function:: <name>
##
function nux.check.function {
nux.log trace "Checking if $1 is function."
declare -f "$1" &>/dev/null && return 0
return 1
}
@ -149,7 +154,7 @@ function nux.check.exec {
test -n "$(which "$binary")"
}
## nux.check.file.exists <name>
## nux.check.file.exists:: <name>
##
function nux.check.file.exists {
test -e "$1" -o -h "$1";
@ -160,7 +165,7 @@ function nux.eval {
eval "$@"
}
## nux.exec.optional <name> [<arguments>]
## nux.exec.optional:: <name> [<arguments>]
##
function nux.exec.optional {
local FUNC="$1"; shift;
@ -176,21 +181,22 @@ function nux.dirty.urlencode {
function nux.help.comment {
local source="$1"
grep -E "^\#\#( |$)" "$source" \
| cut -d\# -f3- \
| cut -d" " -f2- \
| nux.help.shelldoc
if nux.check.file.exists "$source" ; then
grep -E "^\#\#( |$)" "$source" \
| cut -d\# -f3- \
| cut -d" " -f2- \
| nux.help.shelldoc
fi
}
function nux.help.shelldoc {
cat | sed -r \
sed -r \
-e "s/^## ?(.*)/${NC_White}\1${NC_No}/gI" \
-e "s/^# ?(.*)/${NC_Bold}\1${NC_No}/gI" \
-e "s/^ ?[a-z0-9.-_]*/${NC_Bold}&${NC_No}/gI" \
-e "s/^([ a-z0-9.-_]*)::/${NC_Bold}\1${NC_No}/gI" \
-e "s/\*\*([^*]*)\*\*/${NC_Bold}\1${NC_No}/gI" \
-e "s/\*([^*]*)\*/${NC_White}\1${NC_No}/gI" \
--
}
function nux.url.parse {

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@ -1,24 +1,53 @@
nux-runner.run() {
nuxr.run() {
TASK=$1; shift; # Determines task
if nux.check.function task.$TASK
if [ -z "$NUX_NO_INCLUDE" ]
then
nux.log debug "Including script: $NUX_SCRIPT"
source $NUX_SCRIPT; # Includes script
fi
if nux.check.function task.$TASK ; then
nux.log debug "Running task: $TASK";
task.$TASK "$@" # Runs task
else
if [ -z "$NUX_NO_INCLUDE" ]
then
nux.log debug "Including script: $NUX_SCRIPT"
source $NUX_SCRIPT; # Includes script
fi
if nux.check.function task.$TASK ; then
nux.log debug "Running task: $TASK";
task.$TASK "$@" # Runs task
else
echo "$NUX_SCRIPTNAME: Unrecognized task ''$TASK' not available."
echo "Try '$NUX_SCRIPTNAME help' for more information."
exit -1
fi
echo "$NUX_SCRIPTNAME: Unrecognized task ''$TASK' not available."
echo "Try '$NUX_SCRIPTNAME help' for more information."
exit -1
fi
}
function nuxr.task.help {
command="$1"
nux.log trace "Displaying help command for: $command"
if [ -z $command ] ; then
echo Usage: $NC_Bold$NUX_SCRIPTNAME ${NC_No}${NC_White}\<command\>${NC_No} [\<options\>]
nux.help.comment "$NUX_SCRIPT"
nux.help.comment "$NUX_RUNNER"
nux.exec.optional task.help.additional
elif nux.check.function "task.help.$command" ; then
shift;
task.help.$command "$@";
else
nuxr.help.task.comment "$NUX_SCRIPT" "$command" \
|| nuxr.help.task.comment "$NUX_RUNNER" "$command" \
|| echo "Help topic $1 not found. Run $0 help to see topics."
fi
}
function nuxr.help.task.comment {
local script="$1"
local task="$2"
nux.log trace "Trying to figure task documentation location for $@"
doc_start=$(grep -hn -E "## +($task)::" "$script" | cut -d: -f1)
code_start=$(grep -hn -E "((function +task.$task)|(task.$task *\(\))) +{" "$script" | cut -d: -f1)
nux.log trace "doc_start" $doc_start $code_start
if [ -n "$doc_start" -a -n "$code_start" ] ; then
sed -n "$doc_start,$code_start"p "$script" \
| grep "^\#\#" \
| sed -re "s/^#+ ?(.*)/\1/gi" \
| nux.help.shelldoc
return 0
else
return -1
fi
}

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@ -10,10 +10,14 @@ function nux.cfg.include {
}
##
## nux.cfg.global.path [<path>]
## nux.cfg.global.path
## Returns global path., otherwise provides specified.
##
function nux.cfg.global.path {
function nux.cfg.global.dir {
:
}
function nux.cfg.dist.dir
:
}