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https://github.com/fish-shell/fish-shell
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32936b0eb9
Using builtin `commandline -f`, one would expect to have commands executed in the order that they were given. This motivates the change to a queue. Unfortunately, fish internals still need lookahead_list to act as a stack. Add and rename functions to support both cases and have lookahead_list as a std::deque internally. This code is delicate, and we should probably dog-food this in nightly for a while before the next-minor release. Fixes #1567
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/** \file input_common.h
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Header file for the low level input library
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*/
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#ifndef INPUT_COMMON_H
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#define INPUT_COMMON_H
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#include <wchar.h>
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/**
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Use unencoded private-use keycodes for internal characters
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*/
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#define INPUT_COMMON_RESERVED 0xe000
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enum
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{
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/**
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R_NULL is sometimes returned by the input when a character was
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requested but none could be delivered, or when an exception
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happened.
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*/
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R_NULL = INPUT_COMMON_RESERVED,
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R_EOF
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}
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;
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/**
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Init the library
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*/
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void input_common_init(int (*ih)());
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/**
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Free memory used by the library
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*/
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void input_common_destroy();
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/**
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Function used by input_readch to read bytes from stdin until enough
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bytes have been read to convert them to a wchar_t. Conversion is
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done using mbrtowc. If a character has previously been read and
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then 'unread' using \c input_common_unreadch, that character is
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returned. If timed is true, readch2 will wait at most
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WAIT_ON_ESCAPE milliseconds for a character to be available for
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reading before returning with the value WEOF.
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*/
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wchar_t input_common_readch(int timed);
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/**
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Enqueue a character or a readline function to the queue of unread
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characters that input_readch will return before actually reading from fd
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0.
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*/
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void input_common_queue_ch(wint_t ch);
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/**
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Add a character or a readline function to the front of the queue of unread
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characters. This will be the first character returned by input_readch
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(unless this function is called more than once).
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*/
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void input_common_next_ch(wint_t ch);
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/** Adds a callback to be invoked at the next turn of the "event loop." The callback function will be invoked and passed arg. */
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void input_common_add_callback(void (*callback)(void *), void *arg);
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#endif
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