TT_PATTERN_USER(3)

📦
version 2.5.3 · 2 versions
, in nixos 26.05

💅 tt_pattern_user — library call 💅

✨ NAME ✨

tt_pattern_user — return the value in a user data cell for a pattern object. 🎀

🌸 SYNOPSIS 🌸

#include &<Tt/tt_c.h>
void *tt_pattern_user(
Tt_pattern p,
int key);

🦋 DESCRIPTION 🦋

Okay so bestie, tt_pattern_user returns the value in the indicated user data cell for the specified pattern object. 💖

Every pattern object allows an arbitrary number of user data cells, and each one is one word in size. The user data cells are identified by integer keys. The tool can use these keys in any manner to associate arbitrary data with a pattern object. ✨

The user data is part of the pattern object (that is, the storage buffer in the application); it is not part of the actual pattern. The content of user cells has no effect on pattern matching. No cap, it literally does not affect matching. 💅

The p argument is a unique handle for a message pattern. This handle is returned after tt_pattern_create is called. The key argument is the specified user data cell. The application can use tt_pattern_user_set(3) to assign the keys to the user data cells that are part of the pattern object. The value of each data cell must be unique for this pattern. 👑

🔥 RETURN VALUE 🔥

Upon successful completion, the tt_pattern_user function returns the data cell — a piece of arbitrary user data that can hold a void *. The application can use tt_ptr_error(3) to extract one of the following Tt_status values from the returned data:

  • TT_OK — The operation completed successfully. ✅
  • TT_ERR_NOMP — The ttsession(1) process is not running and the ToolTalk service cannot restart it. 😭
  • TT_ERR_POINTER — The pointer passed does not point to an object of the correct type for this operation. 💀

🌈 APPLICATION USAGE 🌈

The user data cell is intended to hold an address. If the address selected is equal to one of the Tt_status enumerated values, the result of the tt_ptr_error(3) function will not be reliable. ⚠️ That's the warning bestie, do not ignore the vibe check.

🎀 SEE ALSO 🎀

💖 that's the whole library-call tea, bestie — tt_pattern_user out. This library call version is all she wrote; the footer had no date, so no fake date energy here. Stay slay! 💖

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