libburnia/libisofs
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Added little macros to simplify IsoNode type hierarchy handling.

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This commit is contained in:
Vreixo Formoso 2008-01-30 00:13:18 +01:00
parent 0beee602b0
commit 04c6bf39b4
2 changed files with 20 additions and 5 deletions
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10
demo/tree.c
View File

@ -49,20 +49,20 @@ print_dir(IsoDir *dir, int level)
iso_dir_get_children(dir, &iter); iso_dir_get_children(dir, &iter);
while (iso_dir_iter_next(iter, &node) == 1) { while (iso_dir_iter_next(iter, &node) == 1) {
if (iso_node_get_type(node) == LIBISO_DIR) { if (ISO_NODE_IS_DIR(node)) {
printf("%s+[D] ", sp); printf("%s+[D] ", sp);
print_permissions(iso_node_get_permissions(node)); print_permissions(iso_node_get_permissions(node));
printf(" %s\n", iso_node_get_name(node)); printf(" %s\n", iso_node_get_name(node));
print_dir((IsoDir*)node, level+1); print_dir(ISO_DIR(node), level+1);
} else if (iso_node_get_type(node) == LIBISO_FILE) { } else if (ISO_NODE_IS_FILE(node)) {
printf("%s-[F] ", sp); printf("%s-[F] ", sp);
print_permissions(iso_node_get_permissions(node)); print_permissions(iso_node_get_permissions(node));
printf(" %s\n", iso_node_get_name(node) ); printf(" %s\n", iso_node_get_name(node) );
} else if (iso_node_get_type(node) == LIBISO_SYMLINK) { } else if (ISO_NODE_IS_SYMLINK(node)) {
printf("%s-[L] ", sp); printf("%s-[L] ", sp);
print_permissions(iso_node_get_permissions(node)); print_permissions(iso_node_get_permissions(node));
printf(" %s -> %s \n", iso_node_get_name(node), printf(" %s -> %s \n", iso_node_get_name(node),
iso_symlink_get_dest((IsoSymlink*)node) ); iso_symlink_get_dest(ISO_SYMLINK(node)) );
} else { } else {
printf("%s-[C] ", sp); printf("%s-[C] ", sp);
print_permissions(iso_node_get_permissions(node)); print_permissions(iso_node_get_permissions(node));

15
libisofs/libisofs.h
View File

@ -25,6 +25,21 @@ typedef struct Iso_Symlink IsoSymlink;
typedef struct Iso_File IsoFile; typedef struct Iso_File IsoFile;
typedef struct Iso_Special IsoSpecial; typedef struct Iso_Special IsoSpecial;
/* macros to check node type */
#define ISO_NODE_IS_DIR(n) (iso_node_get_type(n) == LIBISO_DIR)
#define ISO_NODE_IS_FILE(n) (iso_node_get_type(n) == LIBISO_FILE)
#define ISO_NODE_IS_SYMLINK(n) (iso_node_get_type(n) == LIBISO_SYMLINK)
#define ISO_NODE_IS_SPECIAL(n) (iso_node_get_type(n) == LIBISO_SPECIAL)
#define ISO_NODE_IS_BOOTCAT(n) (iso_node_get_type(n) == LIBISO_BOOT)
/* macros for safe downcasting */
#define ISO_DIR(n) ((IsoDir*)(ISO_NODE_IS_DIR(n) ? n : NULL))
#define ISO_FILE(n) ((IsoFile*)(ISO_NODE_IS_FILE(n) ? n : NULL))
#define ISO_SYMLINK(n) ((IsoSymlink*)(ISO_NODE_IS_SYMLINK(n) ? n : NULL))
#define ISO_SPECIAL(n) ((IsoSpecial*)(ISO_NODE_IS_SPECIAL(n) ? n : NULL))
#define ISO_NODE(n) ((IsoNode*)n)
typedef struct Iso_Dir_Iter IsoDirIter; typedef struct Iso_Dir_Iter IsoDirIter;
typedef struct el_torito_boot_image ElToritoBootImage; typedef struct el_torito_boot_image ElToritoBootImage;