* Limpio el codigo de tipo3

[z.facultad/75.06/emufs.git] / emufs / idx.c

diff --git a/emufs/idx.c b/emufs/idx.c
index 093c2ac7689c1a7100bea7ff15f86dd170e61fe3..cfb798ea5c9b456bf43831be5e36eff3184a5956 100644 (file)
--- a/emufs/idx.c
+++ b/emufs/idx.c
@@ -35,13 +35,26 @@
  */
 
 #include "idx.h"
+#include <stdlib.h>
+#include <strings.h>
 
-#define EMUFS_IDX_EXT ".idx"
+FILE* emufs_idx_abrir(EMUFS* efs, const char* mode)
+{
+       FILE* f;
+       char* filename;
 
-typedef struct emufs_idx_t {
-       int block;
-       long int id_reg;
-} EMUFS_IDX;
+       filename = (char*) malloc(sizeof(char) * (strlen(efs->nombre)
+                               + strlen(EMUFS_IDX_EXT) + 1));
+       if (filename == NULL) {
+               /* TODO Manejo de errores */
+               return NULL;
+       }
+       strcpy(filename, efs->nombre);
+       strcat(filename, EMUFS_IDX_EXT);
+       f = fopen(filename, mode);
+       free(filename);
+       return f;
+}
 
 int emufs_idx_buscar_mayor_id(EMUFS *emu)
 {
@@ -77,16 +90,17 @@ int emufs_idx_buscar_registro(EMUFS *emu, int ID)
        strcat(name_f_idx, EMUFS_IDX_EXT);
        
        if ( (f_idx = fopen(name_f_idx,"r")) == NULL) return -1; /*ERROR*/
+       reg.id_reg = -1;
+       reg.block = -1;
        while ( !feof(f_idx) ){
                if (fread(&reg,sizeof(EMUFS_IDX),1,f_idx) != 1) continue;
                if ( reg.id_reg == ID ){
-                       fclose(f_idx);
-                       return reg.block;
+                       break;
                }
        }
        
        fclose(f_idx);
-       return -1; /*no existe el registro*/
+       return reg.block;
 }
 
 /* agrega un registro al final del archivo */
@@ -99,7 +113,7 @@ int emufs_idx_agregar(EMUFS *emu, int num_bloque, int ID_aux)
        strcpy(name_f_idx,emu->nombre);
        strcat(name_f_idx, EMUFS_IDX_EXT);
 
-       if ( (f_idx = fopen(name_f_idx,"ab+"))==NULL ) return -1;
+       if ( (f_idx = fopen(name_f_idx,"a+"))==NULL ) return -1;
                
        reg.block = num_bloque;
        reg.id_reg = ID_aux;
@@ -107,3 +121,4 @@ int emufs_idx_agregar(EMUFS *emu, int num_bloque, int ID_aux)
        fclose(f_idx);
        return 0;
 }
+