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String / Text to AOB

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Corroder
Grandmaster Cheater Supreme

Reputation: 75

Joined: 10 Apr 2015
Posts: 1667

Posted: Thu Nov 24, 2016 1:51 am Post subject: String / Text to AOB

Hi there,

This code below will return text / string to byte (ASCII).

Code:

text="my text to byte"
tl=tonumber(string.len(text))
print(tl)
x=1
print(string.byte (text,x,tl))
--- text length =15
--- text byte = 109 121 32 116 101 120 116 32 116 111 32 98 121 116 101

But I need to convert text / string to AOB and here is I need :
1. Is there any function or sample to do it ? If any, need the coverted result with format "AA BB CC DD"
2. ReadString string(s) / text from open process and replace with WriteString

example from above text = "my text to byte" replace to "my word to byte". Both text(s) have same length, I already made a function to check both text length, then just need covert text to AOB and read / write the text.

Thanks and regard

atom0s
Moderator

Reputation: 198

Joined: 25 Jan 2006
Posts: 8517
Location: 127.0.0.1

Posted: Thu Nov 24, 2016 3:59 am Post subject:

Here you go:

Code:

----------------------------------------------------------------------------------------------------
-- func: string.trimstart
-- desc: Trims the start of a string for whitespace.
----------------------------------------------------------------------------------------------------
function string.trimstart(s, c)
if (not c) then c = ' '; end
s = string.reverse(s);
s = string.trimend(s, c);
return string.reverse(s);
end

----------------------------------------------------------------------------------------------------
-- func: string.trimend
-- desc: Trims the end of a string for whitespace.
----------------------------------------------------------------------------------------------------
function string.trimend(s, c)
if (not c) then c = ' '; end
if (string.sub(s, -1) == c) then
s = string.sub(s, 0, -2);
s = string.trimend(s, c);
end
return s;
end

----------------------------------------------------------------------------------------------------
-- func: string.trim
-- desc: Trims a string of whitespace.
----------------------------------------------------------------------------------------------------
function string.trim(s, c)
if (not c) then c = ' '; end
s = string.trimstart(s, c);
s = string.trimend(s, c);
return s;
end

---------------------------------------------------------------------------------------------------
-- func: str2hexstr
-- desc: Converts the given string to a hex array string.
---------------------------------------------------------------------------------------------------
function str2hexstr(str)
local ret = '';
for x = 1, #str do
-- Pull a single character from the string..
local val = str:sub(x, x);

-- Convert the character to hex..
local c = string.byte(val);

-- Append to the result..
ret = ret .. string.format('%02X ', c);
end

-- Trim and return the result..
return ret:trim();
end

print(str2hexstr('hello world'));

_________________

- Retired.

Corroder
Grandmaster Cheater Supreme

Reputation: 75

Joined: 10 Apr 2015
Posts: 1667

Posted: Thu Nov 24, 2016 4:45 am Post subject:

Thanks atom0s, it work.

Code:

print(str2hexstr('hello world'));

68 65 6C 6C 6F 20 77 6F 72 6C 64

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