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− | {{mirc title|$bvar Identifier}}'''$bvar''' returns the contents of a binary variable. Default is returning the contents as decimal | + | {{mirc title|$bvar Identifier}}'''$bvar''' returns the contents of a binary variable. Default is returning the contents as decimal ASCII values. |
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== Synopsis == | == Synopsis == | ||
<pre>$bvar(&binvar, [ N [ ,M] ] )</pre> | <pre>$bvar(&binvar, [ N [ ,M] ] )</pre> | ||
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== Parameters == | == Parameters == | ||
* '''&binvar''' - A binary variable name which begins with the & symbol. | * '''&binvar''' - A binary variable name which begins with the & symbol. | ||
− | * '''N''' - The beginning position within the binary variable. N=0 returns the length of the binary variable. Can also be range, N- or N1-N2. | + | * '''N''' - The beginning position within the binary variable. N=0 returns the length of the binary variable. Can also be range, N- or N1-N2. |
− | * '''M''' - Optional | + | * '''M''' - Optional limit of the number of values to return. If there are not M bytes beginning at the Nth position, returns all the bytes beginning at the Nth position. |
+ | |||
== Properties == | == Properties == | ||
− | * ''' | + | * '''text''' - Changes output from decimal ASCII numbers to text characters |
− | + | * '''word''' - Outputs decimal value of a 2-byte word, seeing bytes in little-endian order (low value first) | |
− | * ''' | + | * '''nword''' - Outputs decimal value of a 2-byte word, seeing bytes in big-endian order (high value first) |
− | * ''' | + | * '''long''' - Outputs decimal value of a 4-byte dword (unsigned long), seeing bytes in little-endian order (low value first) |
− | * ''' | + | * '''nlong''' - Outputs decimal value of a 4-byte dword (unsigned long), seeing bytes in big-endian order (high value first) |
− | * ''' | ||
+ | Note: Used without N or M parameters returns the variable name if it exists, otherwise $null | ||
− | + | Note: word/nword/long/nlong work ONLY when N is a positive integer, and do not return a series of numbers from a lengthy variable. They return the value of the 2 or 4 bytes beginning at the Nth byte, and returns $null if there are not the needed 2 or 4 bytes to completely fill the word/long. The last 4 .props are also ignored if the 3rd "M" parameter is used with any value other than 1, returning instead the value as if no property were used. | |
== Example == | == Example == | ||
− | <source lang="mIRC">//bset &abc 1 | + | <source lang="mIRC">//bset &abc 1 11 22 33 44 | echo -a $iif($bvar(&abc),$v1 exists) $iif($bvar(&xyz),$v1 exists) / $bvar(&abc) / $bvar(&xyz) |
− | + | &abc exists / &abc /</source> | |
<source lang="mIRC"> | <source lang="mIRC"> | ||
− | //bset -ta &var 1 chlo $+ $chr( | + | //bset -ta &var 1 chlo $+ $chr(233) / $utfencode(chlo $+ $chr(233) ) | echo -a $bvar(&var,1-) // $bvar(&var,1-).text |
− | + | 99 104 108 111 233 32 47 32 99 104 108 111 195 169 // chloé / chloé | |
− | //bset -t &var 1 chlo $+ $chr( | + | //bset -t &var 1 chlo $+ $chr(233) / $utfencode(chlo $+ $chr(233) ) | echo -a $bvar(&var,1-) // $bvar(&var,1-).text |
− | + | 99 104 108 111 195 169 32 47 32 99 104 108 111 195 131 194 169 // chloé / chloé | |
− | //bset -t &var 1 chlo $+ $chr( | + | //bset -t &var 1 chlo $+ $chr(233) / $utfencode(chlo $+ $chr(233) ) | echo -a $bvar(&var,1-) // $bvar(&var,3-11).text |
− | + | 99 104 108 111 195 169 32 47 32 99 104 108 111 195 131 194 169 // loé / ch | |
− | //bset -t &var 1 chlo $+ $chr( | + | //bset -t &var 1 chlo $+ $chr(233) / $utfencode(chlo $+ $chr(233) ) | echo -a $bvar(&var,1-) // $bvar(&var,3-11,5).text |
− | + | 99 104 108 111 195 169 32 47 32 99 104 108 111 195 131 194 169 // loé | |
</source> | </source> | ||
<source lang="mIRC"> | <source lang="mIRC"> | ||
− | Note: showing base-16 values to better visualize the little-endian/big-endian | + | Note: showing base-16 values to better visualize the little-endian/big-endian changes |
− | //bset &abc 1 231 32 33 34 35 36 37 38 | var %word = $bvar(&abc,1).word , %nword = $bvar(&abc,1).nword , %long = $bvar(&abc,1).long | var %nlong $bvar(&abc,1).nlong | echo -a | + | //bset &abc 1 231 32 33 34 35 36 37 38 | var %word = $bvar(&abc,1).word , %nword = $bvar(&abc,1).nword , %long = $bvar(&abc,1).long | var %nlong $bvar(&abc,1).nlong | echo -a word $base(%word,10,16) nword $base(%nword,10,16) long $base(%long,10,16) nlong $base(%nlong,10,16) |
− | + | word 20E7 nword E720 long 222120E7 nlong E7202122 | |
− | //bset &abc 1 16 32 48 64 | var %word = $bvar(&abc,1).word , %nword = $bvar(&abc,1).nword , %long = $bvar(&abc,1).long | var %nlong $bvar(&abc,1).nlong | echo -a | + | //bset &abc 1 16 32 48 64 | var %word = $bvar(&abc,1).word , %nword = $bvar(&abc,1).nword , %long = $bvar(&abc,1).long | var %nlong $bvar(&abc,1).nlong | echo -a word %word $base(%word,10,16) nword %nword $base(%nword,10,16) long %long $base(%long,10,16) nlong %nlong $base(%nlong,10,16) |
− | + | word 8208 2010 nword 4128 1020 long 1076895760 40302010 nlong 270544960 10203040 | |
− | //bset &abc 1 16 32 48 64 128 144 160 176 | echo -a | + | //bset &abc 1 16 32 48 64 128 144 160 176 | echo -a $base($bvar(&abc,1).long,10,16) |
− | + | 40302010 | |
//bset &abc 1 16 32 48 64 128 144 160 176 | echo -a $base($bvar(&abc,2).long,10,16) | //bset &abc 1 16 32 48 64 128 144 160 176 | echo -a $base($bvar(&abc,2).long,10,16) | ||
− | + | 80403020 | |
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</source> | </source> | ||
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== Compatibility == | == Compatibility == | ||
{{mIRC compatibility|5.3}} | {{mIRC compatibility|5.3}} |