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/* $Id: lpdflib.c 1013 2008-02-14 00:09:02Z oneiros $ */
#include "luatex-api.h"
#include <ptexlib.h>
static int
findcurv (lua_State *L) {
int j;
j = get_cur_v();
lua_pushnumber(L, j);
return 1;
}
static int
findcurh (lua_State *L) {
int j;
j = get_cur_h();
lua_pushnumber(L, j);
return 1;
}
typedef enum { set_origin, direct_page, direct_always } pdf_lit_mode;
int luapdfprint(lua_State * L)
{
int n;
unsigned i, len;
const char *outputstr, *st;
pdf_lit_mode literal_mode;
n = lua_gettop(L);
if (!lua_isstring(L, -1)) {
lua_pushstring(L, "no string to print");
lua_error(L);
}
literal_mode = set_origin;
if (n == 2) {
if (!lua_isstring(L, -2)) {
lua_pushstring(L, "invalid argument for print literal mode");
lua_error(L);
} else {
outputstr = (char *) lua_tostring(L, -2);
if (strcmp(outputstr, "direct") == 0)
literal_mode = direct_always;
else if (strcmp(outputstr, "page") == 0)
literal_mode = direct_page;
else {
lua_pushstring(L,
"invalid argument for print literal mode");
lua_error(L);
}
}
} else {
if (n != 1) {
lua_pushstring(L, "invalid number of arguments");
lua_error(L);
}
}
switch (literal_mode) {
case (set_origin):
pdf_end_text();
pdf_set_origin(cur_h, cur_v);
break;
case (direct_page):
pdf_end_text();
break;
case (direct_always):
pdf_end_string_nl();
break;
default:
assert(0);
}
st = lua_tolstring(L, n,&len);
for (i = 0; i < len; i++) {
if (i%16 == 0)
pdfroom(16);
pdf_buf[pdf_ptr++] = st[i];
}
return 0;
}
static int
getpdf (lua_State *L) {
char *st;
if (lua_isstring(L,2)) {
st = (char *)lua_tostring(L,2);
if (st && *st) {
if (*st == 'h')
return findcurh(L);
else if (*st == 'v')
return findcurv(L);
}
}
lua_pushnil(L);
return 1;
}
static int
setpdf (lua_State *L) {
return (L==NULL ? 0 : 0); /* for -Wall */
}
static const struct luaL_reg pdflib[] = {
{"print", luapdfprint},
{NULL, NULL} /* sentinel */
};
int
luaopen_pdf (lua_State *L) {
luaL_register(L, "pdf", pdflib);
/* build meta table */
luaL_newmetatable(L,"pdf_meta");
lua_pushstring(L, "__index");
lua_pushcfunction(L, getpdf);
/* do these later, NYI */
if (0) {
lua_settable(L, -3);
lua_pushstring(L, "__newindex");
lua_pushcfunction(L, setpdf);
}
lua_settable(L, -3);
lua_setmetatable(L,-2); /* meta to itself */
return 1;
}
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