static char *arg_to_str(struct event_filter *filter, struct filter_arg *arg) { char *str; switch (arg->type) { case FILTER_ARG_BOOLEAN: str = malloc_or_die(6); if (arg->boolean.value) strcpy(str, "TRUE"); else strcpy(str, "FALSE"); return str; case FILTER_ARG_OP: return op_to_str(filter, arg); case FILTER_ARG_NUM: return num_to_str(filter, arg); case FILTER_ARG_STR: return str_to_str(filter, arg); case FILTER_ARG_VALUE: return val_to_str(filter, arg); case FILTER_ARG_FIELD: return field_to_str(filter, arg); case FILTER_ARG_EXP: return exp_to_str(filter, arg); default: /* ?? */ return NULL; } }
girara_list_t* djvu_page_links_get(zathura_page_t* page, void* UNUSED(data), zathura_error_t* error) { if (page == NULL) { if (error != NULL) { *error = ZATHURA_ERROR_INVALID_ARGUMENTS; } goto error_ret; } zathura_document_t* document = zathura_page_get_document(page); if (document == NULL) { goto error_ret; } girara_list_t* list = girara_list_new2((girara_free_function_t) zathura_link_free); if (list == NULL) { if (error != NULL) { *error = ZATHURA_ERROR_OUT_OF_MEMORY; } goto error_ret; } djvu_document_t* djvu_document = zathura_document_get_data(document); miniexp_t annotations = miniexp_nil; while ((annotations = ddjvu_document_get_pageanno(djvu_document->document, zathura_page_get_index(page))) == miniexp_dummy) { handle_messages(djvu_document, true); } if (annotations == miniexp_nil) { goto error_free; } miniexp_t* hyperlinks = ddjvu_anno_get_hyperlinks(annotations); for (miniexp_t* iter = hyperlinks; *iter != NULL; iter++) { if (miniexp_car(*iter) != miniexp_symbol("maparea")) { continue; } miniexp_t inner = miniexp_cdr(*iter); /* extract url information */ const char* target_string = NULL; if (miniexp_caar(inner) == miniexp_symbol("url")) { if (exp_to_str(miniexp_caddr(miniexp_car(inner)), &target_string) == false) { continue; } } else { if (exp_to_str(miniexp_car(inner), &target_string) == false) { continue; } } /* skip comment */ inner = miniexp_cdr(inner); /* extract link area */ inner = miniexp_cdr(inner); zathura_rectangle_t rect = { 0, 0, 0, 0 }; if (exp_to_rect(miniexp_car(inner), &rect) == false) { continue; } /* update rect */ unsigned int page_height = zathura_page_get_height(page) / ZATHURA_DJVU_SCALE; rect.x1 = rect.x1 * ZATHURA_DJVU_SCALE; rect.x2 = rect.x2 * ZATHURA_DJVU_SCALE; double tmp = rect.y1; rect.y1 = (page_height - rect.y2) * ZATHURA_DJVU_SCALE; rect.y2 = (page_height - tmp) * ZATHURA_DJVU_SCALE; /* create zathura link */ zathura_link_type_t type = ZATHURA_LINK_INVALID; zathura_link_target_t target = { ZATHURA_LINK_DESTINATION_UNKNOWN, NULL, 0, -1, -1, -1, -1, 0 };; /* goto page */ if (target_string[0] == '#' && target_string[1] == 'p') { type = ZATHURA_LINK_GOTO_DEST; target.page_number = atoi(target_string + 2) - 1; /* url or other? */ } else if (strstr(target_string, "//") != NULL) { type = ZATHURA_LINK_URI; target.value = (char*) target_string; /* TODO: Parse all different links */ } else { continue; } zathura_link_t* link = zathura_link_new(type, rect, target); if (link != NULL) { girara_list_append(list, link); } } return list; error_free: if (list != NULL) { girara_list_free(list); } error_ret: return NULL; }