Nils O. Selåsdal
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ucore/tailq.h>
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#include <ucore/utils.h>
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struct Block {
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char text[64];
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struct TailQ blocks;
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};
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struct File {
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char name[128];
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struct TailQ head;
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};
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void add_block(struct File *f, const char *txt)
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{
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struct Block *b = malloc(sizeof *b);
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strcpy(b->text,txt);
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uc_tailq_insert_tail(&f->head, &b->blocks);
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}
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void print_file(struct File *f)
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{
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struct TailQ *entry;
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printf("File: %s\n", f->name);
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UC_TAILQ_FOREACH(entry, &f->head) {
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struct Block *b = UC_CONTAINER_OF(entry, struct Block, blocks);
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printf("Block: %s\n", b->text);
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}
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}
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void delete_block(struct File *f, const char *txt)
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{
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struct TailQ *entry, *next;
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UC_TAILQ_FOREACH_SAFE(entry, next, &f->head) {
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struct Block *b = UC_CONTAINER_OF(entry, struct Block, blocks);
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if (strcmp(txt, b->text) == 0) {
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uc_tailq_remove(entry);
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free(b);
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}
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}
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}
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void delete_all_blocks(struct File *f)
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{
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struct TailQ *entry, *next;
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UC_TAILQ_FOREACH_SAFE(entry, next, &f->head) {
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struct Block *b = UC_CONTAINER_OF(entry, struct Block, blocks);
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free(b);
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}
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uc_tailq_init(&f->head);
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}
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int main(void)
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{
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struct File f;
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uc_tailq_init(&f.head);
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printf("Is Empty: %d\n", uc_tailq_empty(&f.head));
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strcpy(f.name,"Test.f");
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add_block(&f,"one");
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add_block(&f,"two");
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add_block(&f,"three");
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print_file(&f);
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printf("Is Empty: %d\n", uc_tailq_empty(&f.head));
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puts("\nDeleting three");
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delete_block(&f, "three");
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print_file(&f);
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puts("\nAdding 2 blocks");
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add_block(&f,"three");
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add_block(&f,"three");
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print_file(&f);
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puts("\nDeleting three");
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delete_block(&f, "three");
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print_file(&f);
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delete_all_blocks(&f);
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printf("Is Empty: %d\n", uc_tailq_empty(&f.head));
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return 0;
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}
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