final

Author: mateusmoutinho

README.md

@@ -33,4 +33,72 @@ end
 ```
 
 ## Geting flags
-you can get flags
+you can get flags by:
+```lua
+---@type Argv
+argv = require("luargv")
+local out_flags, size = argv.get_flag_args({ "out", "output", "o" })
+for i = 1, size do
+    print(out_flags[i])
+end
+```
+if you run:
+```shell
+lua teste.lua -out test test2
+```
+it will appear these:
+```txt
+test
+test2
+```
+
+## Checking if a flag exist
+you can check if a flag its present our not, by:
+```lua
+---@type Argv
+argv = require("luargv")
+
+---@type boolean
+local exist = argv.flags_exist({ "case_sensitive", "cs" })
+print(exist)
+```
+## Compact flags
+its also possible to get comppact flags (the gcc model), witch increases
+readiability of the software:
+
+```lua
+---@type Argv
+argv = require("luargv")
+
+confs, size = argv.get_compact_flags("conf:")
+for i = 1, size do
+    print(confs[i])
+end
+```
+if you run:
+```shell
+lua teste.lua conf:test a b conf:test2
+```
+if will show:
+```txt
+test
+test2
+```
+## Configuring the project
+these lib its project to run idependent from the native lua lib, so you
+can configure , every aspect of the code
+
+```lua
+---@type Argv
+argv = require("luargv")
+argv.substr_func = string.gsub
+argv.get_str_size = string.len
+argv.argslist = { "a", "b", "c" }
+argv.flag_identifiers = { "--", "-" }
+
+local size = argv.get_total_args_size()
+for i = 1, size do
+    print(argv.get_arg_by_index(i))
+end
+
+```

src/basic.lua

@@ -33,10 +33,13 @@ end
 ---@class Argv
 ---@field get_arg_by_index fun(index:number):string
 luargv.get_arg_by_index = function(index)
-    for i = 1, 1000000 do
-        local decrementer = i * -1
-        if luargv.argslist[decrementer] == nil then
-            return luargv.argslist[index + decrementer]
+    local decrementer = 0
+    for i = 0, 1000000 do
+        local converted_i = i * -1
+        if luargv.argslist[converted_i] == nil then
+            break
         end
+        decrementer = decrementer + 1
     end
+    return luargv.argslist[index - decrementer]
 end