Feline.nvim config

colors.lua

-- ~/.config/nvim/lua/plugins/feline/colors.lua
-- One-dark colors

local _M = {
    bg = '#2c323c',
    fg = none,
    yellow = '#e5c07b',
    cyan = '#8abeb7',
    darkblue = '#528bff',
    green = '#98c379',
    orange = '#d19a66',
    violet = '#b294bb',
    magenta = '#ff80ff',
    blue = '#61afef';
    red = '#e88388';
}

return _M

file_name.lua

-- ~/.config/nvim/lua/plugins/feline/file_name.lua
-- Get unique file name

local M = {}

local function reverse(tbl)
    for i = 1, math.floor(#tbl/2) do
        local j = #tbl - i + 1
        tbl[i], tbl[j] = tbl[j], tbl[i]
    end
end

function M.get_tail(filename)
    return vim.fn.fnamemodify(filename, ":t")
end

function M.split_filename(filename)
    local nodes = {}
    for parent in string.gmatch(filename, "[^/]+/") do
        table.insert(nodes, parent)
    end
    table.insert(nodes, M.get_tail(filename))
    return nodes
end

function M.reverse_filename(filename)
    local parents = M.split_filename(filename)
    reverse(parents)
    return parents
end

local function same_until(first, second)
    for i = 1, #first do
        if first[i] ~= second[i] then
            return i
        end
    end
    return 1
end

function M.get_unique_filename(filename, other_filenames)
    local rv = ''

    local others_reversed = vim.tbl_map(M.reverse_filename, other_filenames)
    local filename_reversed = M.reverse_filename(filename)
    local same_until_map = vim.tbl_map(function(second) return same_until(filename_reversed, second) end, others_reversed)

    local max = 0
    for _, v in ipairs(same_until_map) do
        if v > max then max = v end
    end
    for i = max, 1, -1 do
        rv = rv .. filename_reversed[i]
    end

    return rv
end

function M.get_current_ufn()
    local buffers = vim.fn.getbufinfo()
    local listed = vim.tbl_filter(function(buffer) return buffer.listed == 1 end, buffers)
    local names = vim.tbl_map(function(buffer) return buffer.name end, listed)
    local current_name = vim.fn.expand("%")
    return M.get_unique_filename(current_name, names)
end

return M

init.lua

-- ~/.config/nvim/lua/plugins/feline/init.lua

local colors = require 'plugins/feline/colors'

local vi_mode_colors = {
    NORMAL = colors.green,
    INSERT = colors.blue,
    VISUAL = colors.violet,
    OP = colors.green,
    BLOCK = colors.blue,
    REPLACE = colors.red,
    ['V-REPLACE'] = colors.red,
    ENTER = colors.cyan,
    MORE = colors.cyan,
    SELECT = colors.orange,
    COMMAND = colors.magenta,
    SHELL = colors.green,
    TERM = colors.blue,
    NONE = colors.yellow
}

local vi_mode_text = {
    n = "NORMAL",
    i = "INSERT",
    v = "VISUAL",
    [''] = "V-BLOCK",
    V = "V-LINE",
    c = "COMMAND",
    no = "UNKNOWN",
    s = "UNKNOWN",
    S = "UNKNOWN",
    ic = "UNKNOWN",
    R = "REPLACE",
    Rv = "UNKNOWN",
    cv = "UNKWON",
    ce = "UNKNOWN",
    r = "REPLACE",
    rm = "UNKNOWN",
    t = "INSERT"
}

local function file_osinfo()
    local os = vim.bo.fileformat:upper()
    local icon
    if os == 'UNIX' then
        icon = ' '
    elseif os == 'MAC' then
        icon = ' '
    else
        icon = ' '
    end
    return icon .. os
end

local function get_filename(component, modifiers)
    -- local filename = vim.fn.expand('%:t')
    local modifiers_str = table.concat(modifiers, ":")
    local filename = vim.fn.expand("%" .. modifiers_str)
    local extension = vim.fn.expand('%:e')
    local modified_str

    local icon = component.icon or
        require'nvim-web-devicons'.get_icon(filename, extension, { default = true })

    if filename == '' then filename = 'unnamed' end

    if vim.bo.modified then
        local modified_icon = component.file_modified_icon or '●'
        modified_str = modified_icon .. ' '
    else
        modified_str = ''
    end

    return icon .. ' ' .. filename .. ' ' .. modified_str
end

local lsp = require 'feline.providers.lsp'
local vi_mode_utils = require 'feline.providers.vi_mode'
local cursor = require 'feline.providers.cursor'

-- LuaFormatter off

local comps = {
    vi_mode = {
        left = {
            provider = function()
                local current_text = ' '..vi_mode_text[vim.fn.mode()]..' '
                return current_text
            end,
            hl = function()
                local val = {
                    name = vi_mode_utils.get_mode_highlight_name(),
                    fg = colors.bg,
                    bg = vi_mode_utils.get_mode_color(),
                    style = 'bold'
                }
                return val
            end
            -- right_sep = ' '
        },
        right = {
            provider = '▊',
            hl = function()
                local val = {
                    name = vi_mode_utils.get_mode_highlight_name(),
                    fg = vi_mode_utils.get_mode_color()
                }
                return val
            end,
            left_sep = ' '
        }
    },
    file = {
        info = {
            -- provider = 'file_info',
            provider = require("plugins/feline/file_name").get_current_ufn,
            hl = {
                fg = colors.blue,
                style = 'bold'
            },
            left_sep = ' '
        },
        encoding = {
            provider = 'file_encoding',
            left_sep = ' ',
            hl = {
                fg = colors.violet,
                style = 'bold'
            }
        },
        type = {
            provider = 'file_type'
        },
        os = {
            provider = file_osinfo,
            left_sep = ' ',
            hl = {
                fg = colors.violet,
                style = 'bold'
            }
        }
    },
    line_percentage = {
        provider = 'line_percentage',
        left_sep = ' ',
        hl = {
            style = 'bold'
        }
    },
    position = {
        provider = function()
            pos = cursor.position()
            return ' '..pos..' '
        end,
        left_sep = ' ',
        hl = function()
            local val = {
                name = vi_mode_utils.get_mode_highlight_name(),
                fg = colors.bg,
                bg = vi_mode_utils.get_mode_color(),
                style = 'bold'
            }
            return val
        end
    },
    scroll_bar = {
        provider = 'scroll_bar',
        left_sep = ' ',
        hl = {
            fg = colors.blue,
            style = 'bold'
        }
    },
    diagnos = {
        err = {
            provider = 'diagnostic_errors',
            enabled = function()
                return lsp.diagnostics_exist('Error')
            end,
            hl = {
                fg = colors.red
            }
        },
        warn = {
            provider = 'diagnostic_warnings',
            enabled = function()
                return lsp.diagnostics_exist('Warning')
            end,
            hl = {
                fg = colors.yellow
            }
        },
        hint = {
            provider = 'diagnostic_hints',
            enabled = function()
                return lsp.diagnostics_exist('Hint')
            end,
            hl = {
                fg = colors.cyan
            }
        },
        info = {
            provider = 'diagnostic_info',
            enabled = function()
                return lsp.diagnostics_exist('Information')
            end,
            hl = {
                fg = colors.blue
            }
        },
    },
    lsp = {
        name = {
            provider = 'lsp_client_names',
            left_sep = ' ',
            icon = ' ',
            hl = {
                fg = colors.yellow
            }
        }
    },
    git = {
        branch = {
            provider = 'git_branch',
            icon = ' ',
            left_sep = ' ',
            hl = {
                fg = colors.violet,
                style = 'bold'
            },
        },
        add = {
            provider = 'git_diff_added',
            hl = {
                fg = colors.green
            }
        },
        change = {
            provider = 'git_diff_changed',
            hl = {
                fg = colors.orange
            }
        },
        remove = {
            provider = 'git_diff_removed',
            hl = {
                fg = colors.red
            }
        }
    }
}

local properties = {
    force_inactive = {
        filetypes = {
            'NvimTree',
            'dbui',
            'packer',
            'startify',
            'fugitive',
            'fugitiveblame'
        },
        buftypes = {'terminal'},
        bufnames = {}
    }
}

local components = {
    left = {
        active = {
            comps.vi_mode.left,
            comps.file.info,
            comps.lsp.name,
            comps.diagnos.err,
            comps.diagnos.warn,
            comps.diagnos.hint,
            comps.diagnos.info
        },
        inactive = {
            comps.file.info
        }
    },
    mid = {
        active = {},
        inactive = {}
    },
    right = {
        active = {
            comps.git.add,
            comps.git.change,
            comps.git.remove,
            comps.file.os,
            comps.git.branch,
            comps.scroll_bar,
            comps.line_percentage,
            -- comps.vi_mode.right
            comps.position
        },
        inactive = {
            comps.file.os
        }
    }
}

-- LuaFormatter on

require'feline'.setup {
    default_bg = colors.bg,
    default_fg = colors.fg,
    components = components,
    properties = properties,
    vi_mode_colors = vi_mode_colors
}

in file init.lua linu number 187 and 205,

return lsp.diagnostics_exist('Warning')
             |
            \ /
return lsp.diagnostics_exist('Warn')

and

return lsp.diagnostics_exist('Information')
             |
            \ /
return lsp.diagnostics_exist('Info')