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/* to fill */
#include "ptexlib.h"
scaled max_v = 0; /* maximum height-plus-depth of pages shipped so far */
scaled max_h = 0; /* maximum width of pages shipped so far */
boolean doing_leaders = false; /* are we inside a leader box? */
int cur_s = -1; /* current depth of output box nesting, initially $-1$ */
static backend_struct *backend = NULL;
backend_function *backend_out, *backend_out_whatsit, *backend_out_control;
static void missing_backend_function(PDF pdf, halfword p)
{
const char *n = get_node_name(type(p), subtype(p));
if (type(p) == whatsit_node)
formatted_error("pdf backend","no output function for whatsit %s",n);
else
formatted_error("pdf backend","no output function for node %s",n);
}
static void init_none_backend_functions(void)
{
backend_struct *p = &backend[OMODE_NONE];
p->name = strdup("NONE");
}
static void init_pdf_backend_functions(void)
{
backend_struct *p = &backend[OMODE_PDF];
p->name = strdup("PDF");
p->node_fu[rule_node] = &pdf_place_rule;
p->node_fu[glyph_node] = &pdf_place_glyph;
p->whatsit_fu[special_node] = &pdf_special;
p->whatsit_fu[pdf_literal_node] = &pdf_out_literal;
p->whatsit_fu[pdf_refobj_node] = &pdf_ref_obj;
p->whatsit_fu[pdf_annot_node] = &do_annot;
p->whatsit_fu[pdf_start_link_node] = &do_link;
p->whatsit_fu[pdf_end_link_node] = &end_link;
p->whatsit_fu[pdf_dest_node] = &do_dest;
p->whatsit_fu[pdf_thread_node] = &do_thread;
p->whatsit_fu[pdf_end_thread_node] = &end_thread;
p->whatsit_fu[late_lua_node] = &late_lua;
p->whatsit_fu[pdf_colorstack_node] = &pdf_out_colorstack;
p->whatsit_fu[pdf_setmatrix_node] = &pdf_out_setmatrix;
p->whatsit_fu[pdf_save_node] = &pdf_out_save;
p->whatsit_fu[pdf_restore_node] = &pdf_out_restore;
p->control_fu[backend_control_push_list] = &pdf_push_list;
p->control_fu[backend_control_pop_list] = &pdf_pop_list;
p->control_fu[backend_control_begin_page] = &pdf_begin_page;
p->control_fu[backend_control_end_page] = &pdf_end_page;
p->control_fu[backend_control_open_file] = &pdf_open_file;
p->control_fu[backend_control_write_header] = &pdf_write_header;
p->control_fu[backend_control_finish_file] = &pdf_finish_file;
p->control_fu[backend_control_set_reference_point] = &pdf_set_reference_point;
}
static void init_dvi_backend_functions(void)
{
backend_struct *p = &backend[OMODE_DVI];
p->name = strdup("DVI");
p->node_fu[rule_node] = &dvi_place_rule;
p->node_fu[glyph_node] = &dvi_place_glyph;
p->whatsit_fu[special_node] = &dvi_special;
p->whatsit_fu[late_lua_node] = &late_lua;
p->control_fu[backend_control_push_list] = &dvi_push_list;
p->control_fu[backend_control_pop_list] = &dvi_pop_list;
p->control_fu[backend_control_begin_page] = &dvi_begin_page;
p->control_fu[backend_control_end_page] = &dvi_end_page;
p->control_fu[backend_control_open_file] = &dvi_open_file;
p->control_fu[backend_control_write_header] = &dvi_write_header;
p->control_fu[backend_control_finish_file] = &dvi_finish_file;
p->control_fu[backend_control_set_reference_point] = &dvi_set_reference_point;
}
void init_backend_functionpointers(output_mode o_mode)
{
int i, j;
if (backend == NULL) {
backend = xmalloc((MAX_OMODE + 1) * sizeof(backend_struct));
for (i = 0; i <= MAX_OMODE; i++) {
backend[i].node_fu = xmalloc((MAX_NODE_TYPE + 1) * sizeof(backend_function));
backend[i].whatsit_fu = xmalloc((MAX_WHATSIT_TYPE + 1) * sizeof(backend_function));
backend[i].control_fu = xmalloc((MAX_CONTROL_TYPE + 1) * sizeof(backend_function));
for (j = 0; j < MAX_NODE_TYPE + 1; j++)
backend[i].node_fu[j] = &missing_backend_function;
for (j = 0; j < MAX_WHATSIT_TYPE + 1; j++)
backend[i].whatsit_fu[j] = &missing_backend_function;
for (j = 0; j < MAX_CONTROL_TYPE + 1; j++)
backend[i].control_fu[j] = &missing_backend_function;
}
init_none_backend_functions();
init_dvi_backend_functions();
init_pdf_backend_functions();
}
backend_out = backend[o_mode].node_fu;
backend_out_whatsit = backend[o_mode].whatsit_fu;
backend_out_control = backend[o_mode].control_fu;
}
output_mode get_o_mode(void)
{
output_mode o_mode;
if (output_mode_par > 0) {
o_mode = OMODE_PDF;
} else
o_mode = OMODE_DVI;
return o_mode;
}
void fix_o_mode(void)
{
output_mode o_mode = get_o_mode();
if (output_mode_used == OMODE_NONE) {
output_mode_used = o_mode;
/*tex Used by synctex, we need to use output_mode_used there: */
static_pdf->o_mode = output_mode_used;
} else if (output_mode_used != o_mode) {
normal_error("pdf backend", "\\outputmode can only be changed before anything is written to the output");
}
init_backend_functionpointers(output_mode_used);
}
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