X-Git-Url: https://git.llucax.com/z.facultad/75.06/emufs.git/blobdiff_plain/1251aa5beb1ae288e30468141c763d56e04a6bab..4c9396d05ddc6c73873d21f175e6b5bbd6f25993:/emufs/idx.c

diff --git a/emufs/idx.c b/emufs/idx.c
index 6db15a3..7e48545 100644
--- a/emufs/idx.c
+++ b/emufs/idx.c
@@ -78,7 +78,6 @@ EMUFS_REG_ID emufs_idx_buscar_mayor_id_libre(EMUFS* emu, int* err)
 	strcpy(name_f_idx, emu->nombre);
 	strcat(name_f_idx, EMUFS_IDX_EXT);
 
-	(*err) = 0;
 	if ((f_idx = fopen(name_f_idx, "rb")) == NULL) {
 		PERR("No se puede abrir archivo");
 		*err = 4; /* EMUFS_ERROR_CANT_OPEN_FILE */
@@ -210,9 +209,12 @@ EMUFS_REG_ID emufs_idx_get_new_id(EMUFS* efs, int* err)
 {
 	EMUFS_REG_ID id;
 
-	(*err) = 0;
 	id = emufs_did_get_last(efs, err);
 	if (id == EMUFS_NOT_FOUND) {
+		if (*err) {
+			PERR("error al obtener ultimo id");
+			return id;
+		}
 		id = emufs_idx_buscar_mayor_id_libre(efs, err);
 		if (*err) {
 			PERR("error al obtener id mayor");
@@ -222,26 +224,28 @@ EMUFS_REG_ID emufs_idx_get_new_id(EMUFS* efs, int* err)
 	return id;	
 }
 
-unsigned int emufs_idx_get_count(EMUFS *emu)
+EMUFS_REG_ID emufs_idx_get_count(EMUFS *emu)
 {
 	FILE *fp;
 	char name_f_idx[255];
-	long tam;
+	EMUFS_REG_ID tam;
 	
 	strcpy(name_f_idx,emu->nombre);
 	strcat(name_f_idx, EMUFS_IDX_EXT);
 
-	fp = fopen(name_f_idx, "r");
-	if (fp == NULL) return 0;
+	if ( (fp = fopen(name_f_idx, "rb"))==NULL){
+		PERR("No se pudo abrir el archvo");
+		return -1;
+	}
 
-	fseek(fp, 0, SEEK_END);
+	fseek(fp, 0l, SEEK_END);
 	tam = ftell(fp);
 	fclose(fp);
 
 	return tam/sizeof(EMUFS_IDX);
 }
 
-unsigned long emufs_idx_get_id_at(EMUFS *emu, unsigned int pos)
+EMUFS_REG_ID emufs_idx_get_id_at(EMUFS *emu, long pos)
 {
 	FILE *fp;
 	char name_f_idx[255];
@@ -250,8 +254,10 @@ unsigned long emufs_idx_get_id_at(EMUFS *emu, unsigned int pos)
 	strcpy(name_f_idx,emu->nombre);
 	strcat(name_f_idx, EMUFS_IDX_EXT);
 
-	fp = fopen(name_f_idx, "r");
-	if (fp == NULL) return EMUFS_NOT_FOUND;
+	if ( (fp = fopen(name_f_idx, "rb")) == NULL){
+		PERR("No se pudo abrir el archivo");
+		return -1;
+	}
 
 	fseek(fp, pos*sizeof(EMUFS_IDX), SEEK_SET);
 	fread(&id, sizeof(EMUFS_IDX), 1, fp);
@@ -260,3 +266,27 @@ unsigned long emufs_idx_get_id_at(EMUFS *emu, unsigned int pos)
 	return id.id_reg;
 }
 
+int emufs_idx_existe_id(EMUFS *emu, int ID)
+{
+	FILE *fp;
+	char name_f_idx[255];
+	EMUFS_IDX id;
+	
+	strcpy(name_f_idx,emu->nombre);
+	strcat(name_f_idx, EMUFS_IDX_EXT);
+
+	if ( (fp = fopen(name_f_idx, "rb")) == NULL){
+		PERR("No se pudo abrir el archivo");
+		return -1;
+	}
+	
+	while ( !feof(fp) ){
+		fread(&id, sizeof(EMUFS_IDX), 1, fp);
+		if ( id.id_reg == ID ){
+			fclose(fp);
+			return 0;
+		}
+	}
+	fclose(fp);
+	return -1;
+}