Me@6: /*
Me@6:  *  Copyright 2009 OpenSourceStewardshipFoundation.org
Me@6:  *  Licensed under GNU General Public License version 2
Me@6:  *
Me@6:  *  Based on code posted to a discussion group on the web.  (Forgot to mark
Me@6:  *   down where got it from)
Me@6:  *
Me@6:  * Author: seanhalle@yahoo.com
Me@6:  *
Me@6:  * Created on November 14, 2009, 9:00 PM
Me@6:  */
Me@6: #include <string.h>
Me@6: #include <stdio.h>
Me@6: #include <stdlib.h>
Me@6: 
Me@6: #include "Param.h"
Me@6: 
Me@6: void         freeParamStruc( ParamStruc * param );
Me@6: void         freeParamBagHashEntry( ParamBagHashEntry *entry );
Me@6: ParamBagHashEntry *  lookupKeyInHash( char *key, ParamBag * bag );
Me@6: unsigned int hashThisKey( char *s, int hashSz );
Me@6: void         nullOutParamBagHashEntries( ParamBag *bag );
Me@6: 
Me@6:  ParamBag *
Me@6: makeParamBag()
Me@6:  { ParamBag * retBag;
Me@6:    retBag = malloc( sizeof( ParamBag ) );
Me@6:    retBag->entries = malloc( PARAM_BAG_HASHSIZE * sizeof( ParamBagHashEntry *) );
Me@6:    retBag->bagSz = PARAM_BAG_HASHSIZE;
Me@6:    nullOutParamBagHashEntries( retBag );
Me@6:    
Me@6:    return retBag;
Me@6:  }
Me@6: 
Me@6:  void
Me@6: nullOutParamBagHashEntries( ParamBag *bag )
Me@6:  { int i, bagSz;
Me@6:    bagSz = bag->bagSz;
Me@6:    ParamBagHashEntry ** entries = bag->entries;
Me@6:    for( i = 0; i < bagSz; i++ )
Me@6:       entries[ i ] = NULL;
Me@6:  }
Me@6: 
Me@6:  unsigned int
Me@6: hashKey( char *s, int hashSz )
Me@6:  { unsigned int h = 0;
Me@6:    
Me@6:    for( ; *s != 0; s++ )
Me@6:       h = *s + h*31;
Me@6:    return h % hashSz;
Me@6:  }
Me@6: 
Me@6: /*Need this to be separated out, for use in both getParam and putParam
Me@6:  */
Me@6:  ParamBagHashEntry *
Me@6: lookupKeyInHash( char *key, ParamBag * bag )
Me@6:  {  unsigned int
Me@6:    hashIndex = hashKey( key, bag->bagSz );
Me@6:     ParamBagHashEntry*
Me@6:    hashEntry = bag->entries[ hashIndex ];
Me@6:    for( ; hashEntry != NULL; hashEntry = hashEntry->next )
Me@6:     { if( strcmp( hashEntry->key, key ) == 0 )  return hashEntry;
Me@6:     }
Me@6:    return NULL;
Me@6:  }
Me@6: 
Me@6:  ParamStruc *
Me@6: getParamFromBag( char *key, ParamBag * bag )
Me@6:  { ParamBagHashEntry *entry;
Me@6:    entry = lookupKeyInHash( key, bag );
Me@6:    if( entry == NULL ) return NULL;
Me@6:    
Me@6:    return entry->param;
Me@6:  }
Me@6: 
Me@6:  int
Me@6: addParamToBag( char* key, ParamStruc *param, ParamBag *bag )
Me@6:  { unsigned int hashIdx;
Me@6:    ParamBagHashEntry* hashEntry;
Me@6:    hashEntry = lookupKeyInHash( key, bag );
Me@6:    if( hashEntry == NULL )
Me@6:     { hashIdx = hashKey( key, bag->bagSz );
Me@6:       hashEntry = (ParamBagHashEntry*) malloc( sizeof( ParamBagHashEntry ) );
Me@6:             if( hashEntry == NULL )  return 0;
Me@6:       hashEntry->key = strdup( key );
Me@6:             if( hashEntry->key == NULL ) return 0;
Me@6:       hashEntry->next = (bag->entries)[hashIdx];
Me@6:       (bag->entries)[hashIdx] = hashEntry;
Me@6:     }
Me@6:    else
Me@6:     { freeParamStruc( hashEntry->param );
Me@6:     }
Me@6:    hashEntry->param = param;
Me@6:    return 1;
Me@6:  }
Me@6: 
Me@6:  
Me@6:  void
Me@6: freeParamBag( ParamBag *bag )
Me@6:  { int i;
Me@6:    ParamBagHashEntry *hashEntry, *temp, **entries;
Me@6: 
Me@6:    entries = bag->entries;
Me@6:    for( i=0; i < bag->bagSz; i++ )
Me@6:     { if( entries[i] != NULL )
Me@6:        { hashEntry = entries[i];
Me@6:          while( hashEntry != NULL )
Me@6:           {
Me@6:             temp = hashEntry->next;
Me@6:             freeParamBagHashEntry( hashEntry );
Me@6:             hashEntry = temp;
Me@6:           }
Me@6:        }
Me@6:     }
Me@6:  }
Me@6: 
Me@6:  void
Me@6: freeParamBagHashEntry( ParamBagHashEntry *entry )
Me@6:  {
Me@6:    freeParamStruc( entry->param );
Me@6:    free( entry->key ); //was malloc'd above, so free it
Me@6:    free( entry );
Me@6:  }
Me@6: 
Me@6:  void
Me@6: freeParamStruc( ParamStruc * param )
Me@6:  { if( param->type == STRING_PARAM_TYPE ) free( param->strValue );
Me@6:    free( param );
Me@6:  }
Me@6: 
Me@6:  ParamStruc *
Me@6: makeParamStruc()
Me@6:  { ParamStruc *retStruc;
Me@6:    retStruc = malloc( sizeof( ParamStruc ) );
Me@6:    retStruc->floatValue = 0.0;
Me@6:    retStruc->intValue   = 0;
Me@6:    retStruc->strValue   = NULL;
Me@6: 
Me@6:    return retStruc;
Me@6:  }
Me@6: 
Me@6: void
Me@6: removeEndWhtSpaceFromStr( char *str )
Me@6:  { int n;
Me@6: 
Me@6:    n = strlen ( str );
Me@6:    while( --n >= 0 )
Me@6:     {
Me@6:       if(str[n] != ' ' && str[n] != '\t' && str[n] != '\n' && str[n] != '\r')
Me@6:          break;
Me@6:     }
Me@6:    str[n + 1] = '\0';
Me@6:  }
Me@6: 
Me@6: 
Me@6: ParamStruc *
Me@6: makeParamFromStrs( char * type, char *value )
Me@6:  { ParamStruc *retParam;
Me@6:    retParam = makeParamStruc();
Me@6:    switch(*type)
Me@6:     { case 'i':
Me@6:        { retParam->type = INT_PARAM_TYPE;
Me@6:          retParam->intValue = atoi( value );
Me@6:        } break;
Me@6:       case 's':
Me@6:        { retParam->type = STRING_PARAM_TYPE;
Me@6:          retParam->strValue = malloc( strlen(value) + 1);
Me@6:          strcpy( retParam->strValue, value );
Me@6:          removeEndWhtSpaceFromStr( retParam->strValue );
Me@6:        } break;
Me@6:       case 'f':
Me@6:        { retParam->type = FLOAT_PARAM_TYPE;
Me@6:          retParam->floatValue = atof( value );
Me@6:        } break;
Me@6:     }
Me@6:    return retParam;
Me@6:  }
Me@6: 
Me@6: 
Me@6: /* A pretty useless but good debugging function,
Me@6:    which simply displays the hashtable in (key.value) pairs
Me@6: */
Me@6: /*void paramBagToString( ParamBag * bag )
Me@6:  { int i;
Me@6:    ParamBagHashEntry *t;
Me@6:    for( i = 0; i < bag->bagSz; i++ )
Me@6:     { t = entries[i];
Me@6:       if( t == NULL )
Me@6:          strcat_m( retStr, &"()" );
Me@6:       else
Me@6:        { strcat_m( retStr, &"(" );
Me@6:          for( ; t != NULL; t = t->next )
Me@6:           { strcat_m( retStr, &" " );
Me@6:             strcat_m( retStr, t->key );
Me@6:             strcat_m( retStr, &"." );
Me@6:             strcat_m( retStr, paramToString( t->param ) );
Me@6:             strcat_m( retStr, &" " );
Me@6:           }
Me@6:          strcat_m( retStr, &")" );
Me@6:        }
Me@6:     }
Me@6:  }
Me@6: */