Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Update udf examples #4

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Update udf examples #4

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
76 changes: 73 additions & 3 deletions src/udfexample.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -10,12 +10,16 @@
// CREATE FUNCTION sequence RETURNS INT SONAME 'udfexample.so';
// CREATE FUNCTION strtoint RETURNS INT SONAME 'udfexample.so';
// CREATE FUNCTION avgmva RETURNS FLOAT SONAME 'udfexample.so';
// CREATE FUNCTION asciitolower RETURNS STRING SONAME 'udfexample.so';
// CREATE PLUGIN square_wc_rank TYPE 'ranker' SONAME 'udfexample.so';
//
// Windows
// cl /MTd /LD udfexample.c
// CREATE FUNCTION sequence RETURNS INT SONAME 'udfexample.dll';
// CREATE FUNCTION strtoint RETURNS INT SONAME 'udfexample.dll';
// CREATE FUNCTION avgmva RETURNS FLOAT SONAME 'udfexample.dll';
// CREATE FUNCTION asciitolower RETURNS STRING SONAME 'udfexample.dll';
// CREATE PLUGIN square_wc_rank TYPE 'ranker' SONAME 'udfexample.dll';
//

#include "sphinxudf.h"
Expand Down Expand Up @@ -120,8 +124,9 @@ DLLEXPORT sphinx_int64_t strtoint ( SPH_UDF_INIT * init, SPH_UDF_ARGS * args, ch

while ( len>0 && *s>='0' && *s<='9' )
{
res += *s - '0';
res = *s - '0' + 10 * res;
len--;
s++;
}

return res;
Expand Down Expand Up @@ -195,8 +200,73 @@ DLLEXPORT double avgmva ( SPH_UDF_INIT * init, SPH_UDF_ARGS * args, char * error
return res/n;
}

// FIXME! add a string function example?
// FIXME! add a ranker plugin example?
//////////////////////////////////////////////////////////////////////////

DLLEXPORT int asciitolower_init ( SPH_UDF_INIT * init, SPH_UDF_ARGS * args, char * error_message )
{
if ( args->arg_count!=1 || args->arg_types[0]!=SPH_UDF_TYPE_STRING )
{
snprintf ( error_message, SPH_UDF_ERROR_LEN, "ASCIITOLOWER() requires 1 string argument" );
return 1;
}

return 0;
}

DLLEXPORT char * asciitolower ( SPH_UDF_INIT * init, SPH_UDF_ARGS * args, char * error_flag )
{
char * in;
char * out;
int i, len;

len = args->str_lengths[0];
in = args->arg_values[0];
out = args->fn_malloc(len + 1);
for ( i=0; i<len; i++ )
{
if ( in[i] >= 'A' && in[i] <= 'Z' )
out[i] = in[i] - 'A' + 'a';
else
out[i] = in[i];
}
out[len] = '\0';

return out;
}

//////////////////////////////////////////////////////////////////////////

DLLEXPORT int square_wc_rank_init ( void ** userdata, SPH_RANKER_INIT * ranker, char * error )
{
*userdata = (void*) malloc ( sizeof(int) );
**(int**)userdata = 0;

return 0;
}

DLLEXPORT void square_wc_rank_update ( void * userdata, SPH_RANKER_HIT * hit )
{
++*(int*)userdata;
}

DLLEXPORT int square_wc_rank_finalize ( void * userdata, int match_weight )
{
int word_count;

word_count = *(int*)userdata;
*(int*)userdata = 0;
return word_count * word_count;
}

DLLEXPORT int square_wc_rank_deinit ( void * userdata )
{
if ( userdata )
{
free ( userdata );
userdata = NULL;
}
return 0;
}

//
// $Id$
Expand Down