Class: Utils::LineBlamer

Inherits:
Object show all
Defined in:
lib/utils/line_blamer.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, lineno = 1) ⇒ LineBlamer

Initializes a new LineBlamer instance to analyze source code line information.



8
9
10
 
# File 'lib/utils/line_blamer.rb', line 8

def initialize(file, lineno = 1)
  @file, @lineno = file, lineno
end

Class Method Details

.for_line(line) ⇒ Utils::LineBlamer?

Finds the source location of a line and creates a new LineBlamer instance.

This method extracts the file path and line number from the given line object using its source_location method. If a valid location is found, it initializes and returns a new LineBlamer instance with the extracted file path and line number.

information

has a valid source location, otherwise nil



24
25
26
 
# File 'lib/utils/line_blamer.rb', line 24

def self.for_line(line)
  location = line.source_location and new(*location)
end

Instance Method Details

#perform(options = '') ⇒ String?

Performs git blame on a specific line of code and returns the result.

This method executes a git blame command to analyze the specified file and line number, retrieving information about when and by whom the line was last modified. It handles potential errors from git by suppressing stderr output and returns nil if git is not available or the operation fails.



39
40
41
 
# File 'lib/utils/line_blamer.rb', line 39

def perform(options = '')
  `git 2>/dev/null blame #{options} -L #@lineno,+1 "#@file"`.full?
end