exec - Java Shell wildcard tokenizer -

my java extremely rusty , i'm stuck trying make user interface simplifies execution of shell scripts or batch files depending on whether it's linus or win32 respectively. files have following naming convention.

  module-verb-object-etc [args-list]   mysql-connect-grid   mysql-connect-rds   mysql-dump-grid   mysql-dump-grid-se314 

ultimately parse unambiguous terms can:

1. tokenize commands (e.g delimited "-") & shorten them simplified terms soemthing foxpro's command window or cisco's ios (eg "my co gr" executes "mysql-connect-grid" in unix , *.cmd in win32)
2. and in style of ios allow user enter abbreviated commands can type in question mark (?) , give them hint unique remaining (or next) command options (e.g. "my?" returns mysql & "my ?" returns connect, or dump). othr return values "ambiguous" or "unknown" commands not unique or not matched. may seem trivial there many hundreds of commands in each folder , users don't want think...

i wrote function pull list of files directory & retun array of fileanmes. convert 2 dimensional array using method below returns dynamicly sized grid of potential commands.

    /**********************************************************************************      *  make grid: parses array of filenames , tokenizes aws cmds.      * @param strs  array of filenames      **********************************************************************************/      public static string [][] makegrid(string strs[], boolean bprint) {        string tmpgrid[][];        int nmaxcols = 0;        int nrows = uniquecount(strs);        int ngridrow = 0;         tmpgrid = new string [nrows][];         (int nrow=0; nrow<nrows; nrow++) {   string cfilename = strs[nrow];                 if (!cfilename.endswith(".cmd") // list unix files (filter batch files)     && cfilename.indexof("-") > 0 ) // make sure there's dash in filename     {            string strtokens[] = tokenize(strs[nrow], "-"); // dash our token deliminator            int ncols = strtokens.length;             if (ncols>nmaxcols) nmaxcols=ncols;            tmpgrid[ngridrow] = new string [ncols];            (int ncol=0; ncol<ncols; ncol++) {                 tmpgrid[ngridrow][ncol] = strtokens[ncol];                if (bprint) system.out.print(" "+tmpgrid[ngridrow][ncol]);              }             ngridrow++;             if (bprint) system.out.println("");      } //end-if          }        string[][] cmdgrid = new string[ngridrow][nmaxcols];        system.arraycopy(tmpgrid, 0, cmdgrid, 0, ngridrow); // removes null rows  (&npes!)        return cmdgrid;       } 

this returns 2-d array (below), grid[row-n][col-0] match. i'd pull distinct values row[0] wildcard match cmdtoken[0] && row[1] "like" cmdtoken[1] users can piece command until "my du gr ?" returns "enter, [se314]" - if makes sense...

string[][] makegrid:     mysql dump grid se314     mysql connect grid     mysql dump grid     mysql connect rds 

my challenge: cant seem head around matcher function in java. if sql like:

"select distinct col2 cmd_grid    col1 'cmdtoken1%' "  

or better: recursively setting int depthmark each consecutive column

`select distinct col+str(depthmark+1) cmd_grid      col+str(depthmark) 'cmdmatchedtokens%' "  

until have exact match.

i found package called josql tried out of desperation cant seem work in java6. anyway: hoping pure java solution contained in single class...

maybe using scanner or parse multidimentional array unique values... know i'm making way more complex needs be.

a gentle nudge in right direction appreciated.

tia

one exhaustive solution contruct hashmap key possible short command 'my co gr" , corresponding value "mysql-connect-grid". there values in hash map have "mysql-connect-grid" value.

but feasible solution if there finite number of possible keys. if that's not case, can use built in string parsing methods.

for example:

    string[][] makegrid = new string[][]{{"mysql", "dump", "grid", "se314"},                {"mysql", "connect", "grid", ""},               {"mysql",  "dump", "grid", ""},               {"mysql", "connect", "rds", ""}               };      string[] query2 = new string[]{"my", "du", "gr"};    string[][] matchingcommands = new string[4][4];   int resultsize = 0;      for(int i=0; i<makegrid.length; i++)   {       string[] commandcolumn = makegrid[i];    boolean matches = false;       for(int cnt=0; cnt<commandcolumn.length; cnt++)       {        string commandpart = commandcolumn[cnt];        if(cnt < query2.length){         string querypart = query2[cnt];      if(commandpart.startswith(querypart) || querypart.equals("?")){          matches = true;         }else{          matches = false;          break;         }        }       }       if(matches){        matchingcommands[resultsize] = commandcolumn;        resultsize++;       }   } 

this code snippet should give idea of how go it. there 1 thing note here though. matchingcommands array has been initialized 4 rows , 4 columns wasteful because matches lesser that. let me know if need making more efficient. otherwise, working piece of code think want.