Node Js command line utility for highlighting log files.
$ npm install log-color-highlight -g
8000
lch [options] -style1 regex1 [-style2 regex2] ...-f filePath Input file path.
If this is not provided standard input is used
-c configPath Path to configuration file.
-s style Implicit style.
-cs Case sensitive.
By default text matching is done case insensitive.
-p Add style/modifier preset.
-h --help Prints this help message.
Multiple styles may be combined using dot notation.
echo Information, warnings, errors | lch -green info -yellow.bold warn error failureIf no style is specified it defaults to red. This behavior may be altered with -s option which is mostly useful if specified in configuration files.
echo Some errors | lch errorColors: black, red, green, yellow, blue, magenta, cyan, white, gray
Background colors: bgBlack, bgRed, bgGreen, bgYellow, bgBlue, bgMagenta, bgCyan, bgWhite
Styling: reset, bold, dim, italic, underline, inverse, hidden, strikethrough
cs Forces matches to be case sensitive..
echo Info, Warn | lch -green.cs info -yellow warnwl Highlights the whole line
echo highlight whole line | lch -green.wl whole -yellow lightesc Escapes regex special characters
echo [error] ... [info] | lch -red.esc [error] -yellow "\[info\]"Define common style. Useful together with configuration files.
echo "[error] ... [info]" | lch -p err=red.bold -p inf=yellow.bold -err error -inf infoSupports the same highlighting syntax as used from command line. In addition allows multiple lines and comments.
# Presets
-p failure=red.bold
-p success=green.bold
# Highlighting
-yellow.bold warn warning warnings deprecated
-success success successful successfully
-success "Operation.*completed"
-failure "Operation.*failed"
-failure err error errors erroneous
-failure wrong
-failure fail failureecho Successful, warnings, errors | lch -c lch.confHighlight 'error' and 'warn' in default color (red)
echo some errors and warnings | lch error warnStyles
echo "log color highlight" | lch -red.bold log -blue.italic.underline highlightImplicit style
echo "implicit style" | lch -s bold -red implicit -red.reset styleForce case sensitive globally
echo "case sensitive" | lch -cs sensitive CASEToggle case sensitivity per pattern using cs and ci modifiers
echo "case sensitive Case Sensitive" | lch -green.cs sensitive -red caseecho "case sensitive Case Sensitive" | lch -cs -green sensitive -red.ci.bold caseRegular expressions
echo "using regular expressions" | lch -green .*regular -blue exp.*Escape regex special characters. Following examples are equivalent.
echo "[ERROR] On receive (ctrl) - monitorId" | lch -red.esc [error] -cyan.esc "receive (ctrl) - monitorId"echo "[ERROR] On receive (ctrl) - monitorId" | lch -red \[error\] -cyan "receive \(ctrl\) - monitorId"Later options take precedence over previous ones
echo "log color highlight" | lch -green "log color highlight" -blue "color" -red "lor hi"Nested highlights
echo "log color highlight" | lch -blue "color" -red "log color"cd log-color-highlight
npm install
npm test
1.4.0 whole line modifier
updated cli help message/readme
1.3.0 config file is searched in user home folder or LCH_CONFIG env variable path
1.2.0 presets
1.1.1 regular expression escape modifier
1.1.0 case sensitivity modifiers
Lch doesn't fit? Try one of the following.