Barrett Ruth
bf2c91f79f
Compares current buffer against any git revision (default HEAD), opens result in vsplit with full diffs.nvim syntax highlighting.
66 lines
1.7 KiB
Lua
66 lines
1.7 KiB
Lua
local M = {}
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---@param filepath string
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---@return string?
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function M.get_git_dir(filepath)
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local dir = vim.fn.fnamemodify(filepath, ':h')
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local result = vim.fn.systemlist({ 'git', '-C', dir, 'rev-parse', '--git-dir' })
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if vim.v.shell_error ~= 0 then
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return nil
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end
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local git_dir = result[1]
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if not git_dir then
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return nil
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end
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if vim.startswith(git_dir, '/') then
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return git_dir
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end
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return vim.fn.fnamemodify(dir .. '/' .. git_dir, ':p'):gsub('/+$', '')
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end
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---@param filepath string
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---@return string?
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function M.get_repo_root(filepath)
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local dir = vim.fn.fnamemodify(filepath, ':h')
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local result = vim.fn.systemlist({ 'git', '-C', dir, 'rev-parse', '--show-toplevel' })
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if vim.v.shell_error ~= 0 then
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return nil
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end
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return result[1]
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end
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---@param revision string
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---@param filepath string
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---@return string[]?, string?
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function M.get_file_content(revision, filepath)
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local repo_root = M.get_repo_root(filepath)
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if not repo_root then
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return nil, 'not in a git repository'
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end
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local rel_path = vim.fn.fnamemodify(filepath, ':.')
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if vim.startswith(filepath, repo_root) then
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rel_path = filepath:sub(#repo_root + 2)
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end
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local result = vim.fn.systemlist({ 'git', '-C', repo_root, 'show', revision .. ':' .. rel_path })
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if vim.v.shell_error ~= 0 then
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return nil, 'failed to get file at revision: ' .. revision
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end
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return result, nil
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end
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---@param filepath string
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---@return string?
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function M.get_relative_path(filepath)
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local repo_root = M.get_repo_root(filepath)
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if not repo_root then
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return nil
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end
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if vim.startswith(filepath, repo_root) then
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return filepath:sub(#repo_root + 2)
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end
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return vim.fn.fnamemodify(filepath, ':.')
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end
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return M
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