int main()
{
struct m_stack stack;
int i = 0;
int j = 0;
assert(m_stack_init(&stack) == 0);
for(i = 1; m_stack_push(&stack, i) == 0; i++) {
}
assert(i > 1);
assert(m_stack_empty(&stack) == 0);
printf("stack full %d \n", i);
i -= 1;
while((j = m_stack_pop(&stack)) != 0) {
assert(j == i);
i--;
printf("j %d \n", j);
}
assert(i == 0);
assert(m_stack_empty(&stack) == 1);
m_stack_clean(&stack);
return 0;
}
void
pdf_dev_clear_gstates (void)
{
pdf_gstate *gs;
if (m_stack_depth(&gs_stack) > 1) /* at least 1 elem. */
WARN("GS stack depth is not zero at the end of the document.");
while ((gs = m_stack_pop(&gs_stack)) != NULL) {
clear_a_gstate(gs);
RELEASE(gs);
}
return;
}
int
pdf_dev_pop_gstate (void)
{
m_stack *gss = &gs_stack;
pdf_gstate *gs;
if (m_stack_depth(gss) <= 1) { /* Initial state at bottom */
WARN("Too many grestores.");
return -1;
}
gs = m_stack_pop(gss);
clear_a_gstate(gs);
RELEASE(gs);
return 0;
}
int
pdf_dev_grestore (void)
{
pdf_gstate *gs;
if (m_stack_depth(&gs_stack) <= 1) { /* Initial state at bottom */
WARN("Too many grestores.");
return -1;
}
gs = m_stack_pop(&gs_stack);
clear_a_gstate(gs);
RELEASE(gs);
pdf_doc_add_page_content(" Q", 2); /* op: Q */
pdf_dev_reset_fonts();
return 0;
}
void
pdf_dev_grestore_to (int depth)
{
m_stack *gss = &gs_stack;
pdf_gstate *gs;
ASSERT(depth >= 0);
if (m_stack_depth(gss) > depth + 1) {
WARN("Closing pending transformations at end of page/XObject.");
}
while (m_stack_depth(gss) > depth + 1) {
pdf_doc_add_page_content(" Q", 2); /* op: Q */
gs = m_stack_pop(gss);
clear_a_gstate(gs);
RELEASE(gs);
}
pdf_dev_reset_fonts();
return;
}