view release on metacpan or  search on metacpan

src/judy-1.0.5/doc/ext/JudyHS_3.htm  view on Meta::CPAN

<DT><A name="JHSD"><B>JHSD(Rc_int, PJHSArray, Index, Length)</B></A> // <A href="JudyHS_funcs_3.htm#JudyHSDel">JudyHSDel()</A></DT>
<DD>
Given a pointer to a JudyHS array (<B>PJHSArray</B>), delete the
specified <B>Index</B> along with the <B>Value</B> from the JudyHS
array.
<P>
Return <B>Rc_int</B> set to 1 if successfully removed from the array.
Return <B>Rc_int</B> set to 0 if <B>Index</B> was not present.
<P>
<DT><A name="JHSG"><B>JHSG(PValue, PJHSArray, Index, Length)</B></A> // <A href="JudyHS_funcs_3.htm#JudyHSGet">JudyHSGet()</A></DT>
<DD>
Given a pointer to a JudyHS array (<B>PJHSArray</B>),
find <B>Value</B> associated with <B>Index</B>.
<P>
Return <B>PValue</B> pointing to <B>Index</B>'s <B>Value</B>.
Return <B>PValue</B> set to <B>NULL</B> if the <B>Index</B> was not present.
<P>
<DT><A name="JHSFA"><B>JHSFA(Rc_word, PJHSArray)</B></A> // <A href="JudyHS_funcs_3.htm#JudyHSFreeArray">JudyHSFreeArray()</A></DT>
<DD>
Given a pointer to a JudyHS array (<B>PJHSArray</B>), free the entire array.
<P>
Return <B>Rc_word</B> set to the number of bytes freed and <B>PJHSArray</B> set to NULL.
<!----------------->
<P>
<DT><A name="ERRORS"><B>ERRORS:</B> See: </A><A href="Judy_3.htm#ERRORS">Judy_3.htm#ERRORS</A></DT>
<DD>
<P>
<DT><B>EXAMPLES</B></DT>
<DD>
Show how to program with the JudyHS macros.  This program will print
duplicate lines and their line number from <I>stdin</I>.
<P><PRE>
#include &lt;unistd.h&gt;
#include &lt;stdio.h&gt;
#include &lt;string.h&gt;
#include &lt;Judy.h&gt;

//  Compiled:
//  cc -O PrintDupLines.c -lJudy -o PrintDupLines

#define MAXLINE 1000000                 /* max fgets length of line */
uint8_t   Index[MAXLINE];               // string to check

int     // Usage:  PrintDupLines &lt; file
main()
{
    Pvoid_t   PJArray = (PWord_t)NULL;  // Judy array.
    PWord_t   PValue;                   // Judy array element pointer.
    Word_t    Bytes;                    // size of JudyHS array.
    Word_t    LineNumb = 0;             // current line number
    Word_t    Dups = 0;                 // number of duplicate lines

    while (fgets(Index, MAXLINE, stdin) != (char *)NULL)
    {
        LineNumb++;                     // line number

        // store string into array
        JHSI(PValue, PJArray, Index, strlen(Index)); 
        if (PValue == PJERR)            // See ERRORS section
        {
            fprintf(stderr, "Out of memory -- exit\n");
            exit(1);
        }
        if (*PValue == 0)               // check if duplicate
        {
            Dups++;
            printf("Duplicate lines %lu:%lu:%s", *PValue, LineNumb, Index);
        }
        else
        {
            *PValue = LineNumb;         // store Line number
        }
    }
    printf("%lu Duplicates, free JudyHS array of %lu Lines\n", 
                    Dups, LineNumb - Dups);
    JHSFA(Bytes, PJArray);              // free JudyHS array
    printf("JudyHSFreeArray() free'ed %lu bytes of memory\n", Bytes);
    return (0);
}
</PRE>
<!----------------->
<P>
<DT><B>AUTHOR</B></DT>
<DD>
JudyHS was invented and implemented by Doug Baskins after retiring from Hewlett-Packard.
<!----------------->
<P>
<DT><B>SEE ALSO</B></DT>
<DD>
<A href="Judy_3.htm">Judy(3)</A>,
<A href="Judy1_3.htm">Judy1(3)</A>,
<A href="JudyL_3.htm">JudyL(3)</A>,
<A href="JudySL_3.htm">JudySL(3)</A>,
<BR>
<I>malloc()</I>,
<BR>
the Judy website,
<A href="http://judy.sourceforge.net">
http://judy.sourceforge.net</A>,
for further information and Application Notes.
</BODY>
</HTML>