Barrett Ruth
045a9044b5
Compares current buffer against any git revision (default HEAD), opens result with full diffs.nvim syntax highlighting. Follows fugitive convention: :Gdiff/:Gvdiff open vertical split, :Ghdiff opens horizontal split.
48 lines
1.2 KiB
Lua
48 lines
1.2 KiB
Lua
local M = {}
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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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