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git.madduck.net Git - etc/awesome.git/blobdiff - helpers.lua
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[url "git://git.madduck.net/madduck/"]
insteadOf = madduck:
local capi = { timer = timer }
local io = { open = io.open,
local capi = { timer = timer }
local io = { open = io.open,
+ lines = io.lines,
+ popen = io.popen }
local rawget = rawget
-- Lain helper functions for internal use
local rawget = rawget
-- Lain helper functions for internal use
--- get all lines from a file, returns an empty
+-- get all lines from a file, returns an empty
-- list/table if the file does not exist
function helpers.lines_from(file)
if not helpers.file_exists(file) then return {} end
lines = {}
-- list/table if the file does not exist
function helpers.lines_from(file)
if not helpers.file_exists(file) then return {} end
lines = {}
- for line in io.lines(file) do
+ for line in io.lines(file) do
lines[#lines + 1] = line
end
return lines
lines[#lines + 1] = line
end
return lines
-- returns nil otherwise
function helpers.first_nonempty_line(file)
for k,v in pairs(helpers.lines_from(file)) do
-- returns nil otherwise
function helpers.first_nonempty_line(file)
for k,v in pairs(helpers.lines_from(file)) do
- if #v then return v end
+ if #v then return v end
+-- {{{ Pipe operations
+
+-- read the full output of a pipe (command)
+function helpers.read_pipe(cmd)
+ local f = assert(io.popen(cmd))
+ local output = f:read("*all")
+ f:close()
+ return output
+end
+
+-- }}}
+
-- {{{ A map utility
helpers.map_table = {}
-- {{{ A map utility
helpers.map_table = {}