Me@0: /*
Me@3:  *  Copyright 2009 OpenSourceStewardshipFoundation.org
Me@0:  *  Licensed under GNU General Public License version 2
Me@0:  *
Me@0:  *  Based on code posted to a discussion group on the web.  (Forgot to mark
Me@0:  *   down where got it from)
Me@0:  *
Me@0:  * Author: seanhalle@yahoo.com
Me@0:  *
Me@0:  * Created on November 14, 2009, 9:00 PM
Me@0:  */
Me@0: #include <string.h>
Me@0: #include <stdio.h>
Me@0: #include <stdlib.h>
Me@0: 
Me@0: #include "Param.h"
Me@0: 
Me@0: void         freeParamStruc( ParamStruc * param );
Me@2: void         freeParamBagHashEntry( ParamBagHashEntry *entry );
Me@2: ParamBagHashEntry *  lookupKeyInHash( char *key, ParamBag * bag );
Me@2: unsigned int hashThisKey( char *s, int hashSz );
Me@0: void         nullOutParamBagHashEntries( ParamBag *bag );
Me@0: 
Me@0:  ParamBag *
Me@0: makeParamBag()
Me@0:  { ParamBag * retBag;
Me@0:    retBag = malloc( sizeof( ParamBag ) );
Me@2:    retBag->entries = malloc( PARAM_BAG_HASHSIZE * sizeof( ParamBagHashEntry *) );
Me@2:    retBag->bagSz = PARAM_BAG_HASHSIZE;
Me@0:    nullOutParamBagHashEntries( retBag );
Me@0:    
Me@0:    return retBag;
Me@0:  }
Me@0: 
Me@0:  void
Me@0: nullOutParamBagHashEntries( ParamBag *bag )
Me@0:  { int i, bagSz;
Me@0:    bagSz = bag->bagSz;
Me@2:    ParamBagHashEntry ** entries = bag->entries;
Me@0:    for( i = 0; i < bagSz; i++ )
Me@0:       entries[ i ] = NULL;
Me@0:  }
Me@0: 
Me@0:  unsigned int
Me@0: hashKey( char *s, int hashSz )
Me@0:  { unsigned int h = 0;
Me@0:    
Me@0:    for( ; *s != 0; s++ )
Me@0:       h = *s + h*31;
Me@0:    return h % hashSz;
Me@0:  }
Me@0: 
Me@0: /*Need this to be separated out, for use in both getParam and putParam
Me@0:  */
Me@2:  ParamBagHashEntry *
Me@0: lookupKeyInHash( char *key, ParamBag * bag )
Me@0:  {  unsigned int
Me@0:    hashIndex = hashKey( key, bag->bagSz );
Me@2:     ParamBagHashEntry*
Me@0:    hashEntry = bag->entries[ hashIndex ];
Me@0:    for( ; hashEntry != NULL; hashEntry = hashEntry->next )
Me@0:     { if( strcmp( hashEntry->key, key ) == 0 )  return hashEntry;
Me@0:     }
Me@0:    return NULL;
Me@0:  }
Me@0: 
Me@0:  ParamStruc *
Me@0: getParamFromBag( char *key, ParamBag * bag )
Me@2:  { ParamBagHashEntry *entry;
Me@0:    entry = lookupKeyInHash( key, bag );
Me@0:    if( entry == NULL ) return NULL;
Me@0:    
Me@0:    return entry->param;
Me@0:  }
Me@0: 
Me@0:  int
Me@0: addParamToBag( char* key, ParamStruc *param, ParamBag *bag )
Me@0:  { unsigned int hashIdx;
Me@2:    ParamBagHashEntry* hashEntry;
Me@0:    hashEntry = lookupKeyInHash( key, bag );
Me@0:    if( hashEntry == NULL )
Me@0:     { hashIdx = hashKey( key, bag->bagSz );
Me@2:       hashEntry = (ParamBagHashEntry*) malloc( sizeof( ParamBagHashEntry ) );
Me@0:             if( hashEntry == NULL )  return 0;
Me@2:       hashEntry->key = strdup( key );
Me@0:             if( hashEntry->key == NULL ) return 0;
Me@0:       hashEntry->next = (bag->entries)[hashIdx];
Me@0:       (bag->entries)[hashIdx] = hashEntry;
Me@0:     }
Me@0:    else
Me@0:     { freeParamStruc( hashEntry->param );
Me@0:     }
Me@0:    hashEntry->param = param;
Me@0:    return 1;
Me@0:  }
Me@0: 
Me@2:  
Me@0:  void
Me@0: freeParamBag( ParamBag *bag )
Me@0:  { int i;
Me@2:    ParamBagHashEntry *hashEntry, *temp, **entries;
Me@0: 
Me@0:    entries = bag->entries;
Me@0:    for( i=0; i < bag->bagSz; i++ )
Me@0:     { if( entries[i] != NULL )
Me@0:        { hashEntry = entries[i];
Me@0:          while( hashEntry != NULL )
Me@0:           {
Me@0:             temp = hashEntry->next;
Me@2:             freeParamBagHashEntry( hashEntry );
Me@0:             hashEntry = temp;
Me@0:           }
Me@0:        }
Me@0:     }
Me@0:  }
Me@0: 
Me@0:  void
Me@2: freeParamBagHashEntry( ParamBagHashEntry *entry )
Me@0:  {
Me@0:    freeParamStruc( entry->param );
Me@0:    free( entry->key ); //was malloc'd above, so free it
Me@0:    free( entry );
Me@0:  }
Me@0: 
Me@0:  void
Me@0: freeParamStruc( ParamStruc * param )
Me@0:  { if( param->type == STRING_PARAM_TYPE ) free( param->strValue );
Me@0:    free( param );
Me@0:  }
Me@0: 
Me@0:  ParamStruc *
Me@0: makeParamStruc()
Me@0:  { ParamStruc *retStruc;
Me@0:    retStruc = malloc( sizeof( ParamStruc ) );
Me@0:    retStruc->floatValue = 0.0;
Me@0:    retStruc->intValue   = 0;
Me@0:    retStruc->strValue   = NULL;
Me@2: 
Me@2:    return retStruc;
Me@0:  }
Me@0: 
Me@2: void
Me@2: removeEndWhtSpaceFromStr( char *str )
Me@2:  { int n;
Me@2: 
Me@2:    n = strlen ( str );
Me@2:    while( --n >= 0 )
Me@2:     {
Me@2:       if(str[n] != ' ' && str[n] != '\t' && str[n] != '\n' && str[n] != '\r')
Me@2:          break;
Me@2:     }
Me@2:    str[n + 1] = '\0';
Me@2:  }
Me@2: 
Me@2: 
Me@2: ParamStruc *
Me@0: makeParamFromStrs( char * type, char *value )
Me@0:  { ParamStruc *retParam;
Me@0:    retParam = makeParamStruc();
Me@0:    switch(*type)
Me@0:     { case 'i':
Me@0:        { retParam->type = INT_PARAM_TYPE;
Me@0:          retParam->intValue = atoi( value );
Me@0:        } break;
Me@0:       case 's':
Me@0:        { retParam->type = STRING_PARAM_TYPE;
Me@0:          retParam->strValue = malloc( strlen(value) + 1);
Me@0:          strcpy( retParam->strValue, value );
Me@2:          removeEndWhtSpaceFromStr( retParam->strValue );
Me@0:        } break;
Me@0:       case 'f':
Me@0:        { retParam->type = FLOAT_PARAM_TYPE;
Me@0:          retParam->floatValue = atof( value );
Me@0:        } break;
Me@0:     }
Me@0:    return retParam;
Me@0:  }
Me@0: 
Me@2: 
Me@2: /* A pretty useless but good debugging function,
Me@2:    which simply displays the hashtable in (key.value) pairs
Me@2: */
Me@2: /*void paramBagToString( ParamBag * bag )
Me@2:  { int i;
Me@2:    ParamBagHashEntry *t;
Me@2:    for( i = 0; i < bag->bagSz; i++ )
Me@2:     { t = entries[i];
Me@2:       if( t == NULL )
Me@2:          strcat_m( retStr, &"()" );
Me@2:       else
Me@2:        { strcat_m( retStr, &"(" );
Me@2:          for( ; t != NULL; t = t->next )
Me@2:           { strcat_m( retStr, &" " );
Me@2:             strcat_m( retStr, t->key );
Me@2:             strcat_m( retStr, &"." );
Me@2:             strcat_m( retStr, paramToString( t->param ) );
Me@2:             strcat_m( retStr, &" " );
Me@2:           }
Me@2:          strcat_m( retStr, &")" );
Me@2:        }
Me@2:     }
Me@2:  }
Me@2: */