static int M_index (lua_State *L) { /** mnotedata[n] */
if (lua_isnumber(L, 2)) {
ExifMnoteData *md = checkmnote_data(L);
lua_Number n = lua_tonumber(L, 2);
if (n < 1 || exif_mnote_data_count(md) < n) {
lua_pushnil(L);
} else {
unsigned int n_ = (unsigned int)(n-1);
lua_createtable(L, 0, 5);
lua_pushnumber(L, exif_mnote_data_get_id(md, n_));
lua_setfield(L, -2, "tagid");
lua_pushstring(L, exif_mnote_data_get_name(md, n_));
lua_setfield(L, -2, "tag");
lua_pushstring(L, exif_mnote_data_get_title(md, n_));
lua_setfield(L, -2, "title");
lua_pushstring(L, exif_mnote_data_get_description(md, n_));
lua_setfield(L, -2, "description");
{
char buffer[1024];
lua_pushstring(L, exif_mnote_data_get_value(md, n_, buffer, sizeof(buffer)/sizeof(char)));
lua_setfield(L, -2, "value");
}
}
return 1;
} else {
lua_getmetatable(L, 1);
lua_pushvalue(L, 2);
lua_gettable(L, -2);
return 1;
}
}
/* Show the given MakerNote tag if it exists */
void exif_get_mnote_tag(ExifData *d, unsigned int tag, char* buffer, unsigned int maxsize)
{
ExifMnoteData *mn = NULL;
int i, num;
char buf[1024];
if ( (d!=NULL) && (buffer!=NULL) && (maxsize > 0) )
{
mn = exif_data_get_mnote_data(d);
}
else
{
return;
}
if ( mn != NULL )
{
num = exif_mnote_data_count(mn);
/* Loop through all MakerNote tags, searching for the desired one */
for (i=0; i < num; ++i)
{
D(("%d/%d %d 0x%2x %s; %s\n", i, num, exif_mnote_data_get_id(mn, i),
exif_mnote_data_get_id(mn, i),
exif_mnote_data_get_name(mn,i),
exif_mnote_data_get_title(mn, i) ));
if (exif_mnote_data_get_id(mn, i) == tag)
{
if (exif_mnote_data_get_value(mn, i, buf, sizeof(buf)))
{
/* Don't bother printing it if it's entirely blank */
exif_trim_spaces(buf);
if (*buf != '\0')
{
D(("%s\n", buf));
snprintf(buffer, (size_t)maxsize, "%s: %s\n", exif_mnote_data_get_title(mn, i), buf);
}
}
}
}
}
}
