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+# cliparser - proxmark3-rrg
+
+## cliparser setup and use
+
+*** Draft notes - needs work ***
+
+Note: the parser will format and color and layout as needed.
+
+## common options
+where possiable all options should be lowercase.  
+extended options preceeded with -- should be short  
+options provided directly (without an option identifier) should be avoided.  
+-vv for extra verbos should be avoided; use of debug level is prefered.  
+whith --options the equle is not needed (will work with and without) so dont use '='  
+e.g. cmd --cn 12345
+
+    -h --help       : help
+    --cn            : card number
+    --fn            : facility number
+    --q5            : target is lf q5 card
+    --raw           : raw data
+    -k --key        : key supplied
+    -n --keyno      : key number to use
+    -v --verbose    : flag when output should provide more information, not conidered debug.
+    -1 --buffer     : use the sample buffer
+
+### setup the parser data structure
+Header file to include
+
+    #include "cliparser.h"
+
+In the command function, setup the context
+
+    CLIParserContext *ctx;
+
+
+### define the text
+CLIParserInit (\<context\>, \<description\>, \<notes\n examples ... \>);
+
+use -> to seperate example and example comment and \\n to seperate examples.
+e.g. lf indala clone -r a0000000a0002021 -> this uses .....
+
+    CLIParserInit(&ctx, "lf indala clone",                          
+                  "clone INDALA UID to T55x7 or Q5/T5555 tag",      
+                  "lf indala clone --heden 888\n"                   
+                  "lf indala clone --fc 123 --cn 1337\n"
+                  "lf indala clone -r a0000000a0002021\n"
+                  "lf indala clone -l -r 80000001b23523a6c2e31eba3cbee4afb3c6ad1fcf649393928c14e5");
+
+### define the options
+
+    void *argtable[] = {
+        arg_param_begin,
+        arg_lit0("l", "long", "optional - long UID 224 bits"),                
+        arg_int0("c", "heden", "<decimal>", "Cardnumber for Heden 2L format"),  
+        arg_strx0("r", "raw", "<hex>", "raw bytes"),                          
+        arg_lit0("q", "Q5", "optional - specify writing to Q5/T5555 tag"),
+        arg_int0(NULL, "fc", "<decimal>", "Facility Code (26 bit format)"),
+        arg_int0(NULL, "cn", "<decimal>", "Cardnumber (26 bit format)"),
+        arg_param_end
+    };
+    
+**Notes:**  
+booleen : arg_lit0 ("\<short option\>", "\<long option\>", \["\<format\>",\] \<"description"\>);  
+optional integer : arg_int0 ("\<short option\>", "\<long option\>", \["\<format\>",\] \<"description"\>);  
+required integer : arg_int1 ("\<short option\>", "\<long option\>", \["\<format\>",\] \<"description"\>);  
+optional string : arg_strx0 ("\<short option\>", "\<long option\>", \["\<format\>",\] \<"description"\>);  
+required string : arg_strx1 ("\<short option\>", "\<long option\>", \["\<format\>",\] \<"description"\>);
+
+** if an option does not have a short or long option, use NULL in its place. **
+        
+### show the menu
+CLIExecWithReturn(\<context\>, \<command line to parse\>, \<arg/opt table\>, \<return on error\>);
+
+    CLIExecWithReturn(ctx, Cmd, argtable, false);
+
+### clean up
+Once you have extracted the options, cleanup the context.
+
+   CLIParserFree(ctx);
+
+### retreiving options
+**bool option**  
+arg_get_lit(\<context\>, \<opt index\>);
+
+    is_long_uid = arg_get_lit(ctx, 1);
+
+**int option**  
+arg_get_int_def(\<context\>, \<opt index\>, \<default value\>);
+
+    cardnumber = arg_get_int_def(ctx, 2, -1);
+
+**hex option**  
+CLIGetHexWithReturn(\<context\>, \<opt index\>, \<store variable\>, \<ptr to stored length\>);
+    ?? as an array of uint_8 ??
+    
+    uint8_t aid[2] = {0};
+    int aidlen;
+    CLIGetHexWithReturn(ctx, 2, aid, &aidlen);
+
+**hex option returning ???**  
+
+    uint8_t key[24] = {0};
+    int keylen = 0;
+    int res_klen = CLIParamHexToBuf(arg_get_str(ctx, 3), key, 24, &keylen);
+    quick test : seems res_keylen == 0 when ok so not key len ??? 
+
+**string option**  
+CLIGetStrWithReturn(\<context\>,\<opt index\>, \<unsigned char \*\>, \<int \*\>);
+
+    uint8_t Buffer[100];
+    int BufLen;
+    CLIGetStrWithReturn(ctx,7, Buffer, &BufLen);
+