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* Preference support for Guests * Update preferences.dm Co-authored-by: Zephyr <12817816+ZephyrTFA@users.noreply.github.com> Co-authored-by: Zonespace <41448081+Zonespace27@users.noreply.github.com>
79 lines
2.4 KiB
Plaintext
79 lines
2.4 KiB
Plaintext
/**
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* A savefile implementation that handles all data using json.
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* Also saves it using JSON too, fancy.
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* If you pass in a null path, it simply acts as a memory tree instead, and cannot be saved.
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*/
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/datum/json_savefile
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var/path = ""
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VAR_PRIVATE/list/tree
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/// If this is set to true, calling set_entry or remove_entry will automatically call save(), this does not catch modifying a sub-tree, nor do I know how to do that
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var/auto_save = FALSE
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GENERAL_PROTECT_DATUM(/datum/json_savefile)
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/datum/json_savefile/New(path)
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src.path = path
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tree = list()
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if(path && fexists(path))
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load()
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/**
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* Gets an entry from the json tree, with an optional default value.
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* If no key is specified it throws the entire tree at you instead
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*/
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/datum/json_savefile/proc/get_entry(key, default_value)
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if(!key)
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return tree
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return (key in tree) ? tree[key] : default_value
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/// Sets an entry in the tree to the given value
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/datum/json_savefile/proc/set_entry(key, value)
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tree[key] = value
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if(auto_save)
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save()
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/// Removes the given key from the tree
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/datum/json_savefile/proc/remove_entry(key)
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if(key)
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tree -= key
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if(auto_save)
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save()
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/// Wipes the entire tree
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/datum/json_savefile/proc/wipe()
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tree?.Cut()
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/datum/json_savefile/proc/load()
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if(!path || !fexists(path))
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return FALSE
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try
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tree = json_decode(rustg_file_read(path))
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return TRUE
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catch(var/exception/err)
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stack_trace("failed to load json savefile at '[path]': [err]")
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return FALSE
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/datum/json_savefile/proc/save()
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if(path)
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rustg_file_write(json_encode(tree), path)
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/// Traverses the entire dir tree of the given savefile and dynamically assembles the tree from it
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/datum/json_savefile/proc/import_byond_savefile(savefile/savefile)
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tree.Cut()
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var/list/dirs_to_go = list("/" = tree)
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while(length(dirs_to_go))
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var/dir = dirs_to_go[1]
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var/list/region = dirs_to_go[dir]
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dirs_to_go.Cut(1, 2)
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savefile.cd = dir
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for(var/entry in savefile.dir)
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var/entry_value
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savefile.cd = "[dir]/[entry]"
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//eof refers to the path you are cd'ed into, not the savefile as a whole. being false right after cding into an entry means this entry has no buffer, which only happens with nested save file directories
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if (savefile.eof)
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region[entry] = list()
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dirs_to_go["[dir]/[entry]"] = region[entry]
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continue
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READ_FILE(savefile, entry_value) //we are cd'ed to the entry, so we don't need to specify a path to read from
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region[entry] = entry_value
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