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/*
See license.txt in the root of this project.
*/
/* This one is real simple. */
# include "luametatex.h"
# include "lmtoptional.h"
typedef struct imlib_state_info {
int initialized;
int padding;
int (*im_MagickCommandGenesis) (
void *image_info,
// int *command,
void *command,
int argc,
const char **argv,
char **metadata,
void *exception
);
void * (*im_AcquireImageInfo) (
void
);
void * (*im_AcquireExceptionInfo) (
void
);
int (*im_ConvertImageCommand) (
void *image_info,
int argc,
const char **argv,
char **metadata,
void *exception
);
} imlib_state_info;
static imlib_state_info imlib_state = {
.initialized = 0,
.padding = 0,
.im_MagickCommandGenesis = NULL,
.im_AcquireImageInfo = NULL,
.im_AcquireExceptionInfo = NULL,
.im_ConvertImageCommand = NULL,
};
static int imlib_initialize(lua_State * L) // todo: table
{
if (! imlib_state.initialized) {
const char *filename1 = lua_tostring(L,1);
const char *filename2 = lua_tostring(L,2);
if (filename1) {
lmt_library lib = lmt_library_load(filename1);
imlib_state.initialized = lmt_library_okay(lib);
imlib_state.im_AcquireImageInfo = lmt_library_find(lib, "AcquireImageInfo");
imlib_state.im_AcquireExceptionInfo = lmt_library_find(lib, "AcquireExceptionInfo");
}
if (imlib_state.initialized && filename2) {
lmt_library lib = lmt_library_load(filename2);
imlib_state.im_MagickCommandGenesis = lmt_library_find(lib, "MagickCommandGenesis");
imlib_state.im_ConvertImageCommand = lmt_library_find(lib, "ConvertImageCommand");
imlib_state.initialized = lmt_library_okay(lib);
}
}
lua_pushboolean(L, imlib_state.initialized);
return 1;
}
static int imlib_execute(lua_State * L)
{
if (imlib_state.initialized) {
if (lua_type(L, 1) == LUA_TTABLE) {
const char *inpname = NULL;
const char *outname = NULL;
lua_getfield(L, -1, "inputfile" ); inpname = lua_tostring(L, -1); lua_pop(L, 1);
lua_getfield(L, -1, "outputfile"); outname = lua_tostring(L, -1); lua_pop(L, 1);
if (inpname && outname) {
lua_Integer nofarguments = 0;
lua_Integer nofoptions = 0;
const char **arguments = NULL;
void *info = imlib_state.im_AcquireImageInfo();
void *exep = imlib_state.im_AcquireExceptionInfo();
if (lua_getfield(L, -1, "options" ) == LUA_TTABLE) {
nofoptions = luaL_len(L, -1);
}
arguments = lmt_memory_malloc((nofoptions + 4) * sizeof(char *));
arguments[nofarguments++] = "convert";
arguments[nofarguments++] = inpname;
for (lua_Integer i = 1; i <= nofoptions; i++) {
switch (lua_rawgeti(L, -1, i)) {
case LUA_TSTRING:
case LUA_TNUMBER:
arguments[nofarguments++] = lua_tostring(L, -1);
break;
case LUA_TBOOLEAN:
arguments[nofarguments++] = lua_toboolean(L, -1) ? "true" : "false";
break;
}
lua_pop(L, 1);
}
arguments[nofarguments++] = outname;
imlib_state.im_MagickCommandGenesis(info, imlib_state.im_ConvertImageCommand, (int) nofarguments, arguments, NULL, exep);
lmt_memory_free((char *) arguments);
lua_pop(L, 1);
lua_pushboolean(L, 1);
return 2;
}
} else {
lua_pushboolean(L, 0);
lua_pushliteral(L, "invalid specification");
return 2;
}
}
lua_pushboolean(L, 0);
lua_pushliteral(L, "not initialized");
return 2;
}
static struct luaL_Reg imlib_function_list[] = {
{ "initialize", imlib_initialize },
{ "execute", imlib_execute },
{ NULL, NULL },
};
int luaopen_imagemagick(lua_State * L)
{
lmt_library_register(L, "imagemagick", imlib_function_list);
return 0;
}
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