pick_engine.c File Reference

pick from a list of choices More...

#include "include/common.h"
#include <fcntl.h>
#include <stdbool.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <termios.h>
#include <unistd.h>

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Functions
void	deselect_object (Pick *pick)
	Deselects the currently selected object in pick window.
void	destroy_pick_view (Init *init)
	Destroys pick view, unmaps file buffer, and cleans up resources.
void	display_pick_help (Init *init)
	Displays the help screen for the pick interface using view.
void	display_pick_page (Pick *pick)
	Displays current page of objects in pick window.
void	end_pick_view (Init *)
int	exec_objects (Init *init)
	Executes specified command with selected objects as arguments.
int	init_pick (Init *init, int argc, char **argv, int by, int bx)
	Initializes pick structure and opens pick input file or pipe.
int	match_objects (Pick *pick, char *s)
	Displays current page of objects in pick window.
int	new_pick_view (Init *init)
	Initializes a new view for displaying file contents in the pick interface.
void	new_view_file (Init *init, char *file)
	Initializes a new view for displaying the contents of a specified file in the pick interface.
int	open_pick_win (Init *init)
	Initializes the pick window based on the parameters specified in the Pick structure.
int	output_objects (Pick *pick)
	Outputs selected objects to specified output file.
int	pick_engine (Init *init)
	Initializes pick interface, calculates window size and position, and enters picker loop.
void	pick_std_chyron (Pick *pick)
	Sets standard chyron key states based on pick structure.
int	picker (Init *init, char *field)
	Main loop for handling user input and interactions in the pick interface.
int	read_pick_input (Init *init)
	Reads pick input from file pointer and saves objects into pick structure.
int	read_theme (Init *)
void	remove_right_angle (Pick *)
void	reverse_object (Pick *pick)
	Reverses the display of the currently selected object in pick window.
void	save_object (Pick *pick, char *s)
	Saves a string as an object in the pick structure.
void	toggle_object (Pick *pick)
	Toggles the selection state of the currently selected object in pick window.
void	unreverse_object (Pick *pick)
	Unreverses the display of the currently selected object in pick window.

Variables
int	calculated_idx
int	obj_idx
char const	pagers_editors [12][10]
int	pg_lines
int	pipe_fd [2]
int	tbl_col
int	tbl_cols
int	tbl_line
int	tbl_page
int	tbl_pages

Detailed Description

pick from a list of choices

Author

Bill Waller Copyright (c) 2025 MIT License billx.nosp@m.wall.nosp@m.er@gm.nosp@m.ail..nosp@m.com

Date

2026-02-09

Definition in file pick_engine.c.

Function Documentation

end_pick_view()

void end_pick_view

(

Init *

)

read_theme()

int read_theme

(

Init *

init

)

Definition at line 587 of file pick_engine.c.

                           {
    int rc;
    expand_tilde(init->mapp_theme, MAXLEN - 1);
    rc = process_config_file(init->mapp_theme, init);
    if (rc)
        return rc;
    SIO *sio = init->sio;
    initialize_local_colors(sio);
    update_panels();
    doupdate();
    return 0;
}

References expand_tilde(), initialize_local_colors(), Init::mapp_theme, process_config_file(), and Init::sio.

Referenced by pick_engine().

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remove_right_angle()

void remove_right_angle

(

Pick *

pick

)

Definition at line 539 of file pick_engine.c.

                                    {
    if (pick->d_idx >= pick->d_cnt)
        pick->d_idx = pick->d_cnt - 1;
    pick->tbl_line = (pick->d_idx / pick->tbl_cols) % pick->lines;
    pick->y = pick->tbl_line + pick->y_offset;
    pick->d_idx = pick->tbl_page * pick->lines * pick->tbl_cols + pick->tbl_col * pick->lines + pick->tbl_line;
    if (pick->f_selected[pick->d_idx])
        mvwadd_wchnstr(pick->win, pick->y, 0, &chk, 1);
    else
        mvwadd_wchnstr(pick->win, pick->y, 0, &sp, 1); // space
    wmove(pick->win, pick->y, 0);
}

References chk, Pick::d_cnt, Pick::d_idx, Pick::f_selected, Pick::lines, sp, Pick::tbl_col, Pick::tbl_cols, Pick::tbl_line, Pick::tbl_page, Pick::win, Pick::y, and Pick::y_offset.

Referenced by picker().

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Variable Documentation

calculated_idx

int calculated_idx

Definition at line 24 of file pick_engine.c.

obj_idx

int obj_idx

Definition at line 24 of file pick_engine.c.

pagers_editors

char const pagers_editors[12][10]

Initial value:

= {"view", "view", "less", "more",
           "vi", "vim", "nano", "nvim",
           "pico", "emacs", "edit", ""}

Definition at line 48 of file pick_engine.c.

                                  {"view", "view", "less", "more",
                                     "vi", "vim", "nano", "nvim",
                                     "pico", "emacs", "edit", ""};

pg_lines

int pg_lines

Definition at line 23 of file pick_engine.c.

pipe_fd

int pipe_fd[2]

Definition at line 46 of file pick_engine.c.

Referenced by init_pick().

tbl_col

int tbl_col

Definition at line 23 of file pick_engine.c.

tbl_cols

int tbl_cols

Definition at line 23 of file pick_engine.c.

tbl_line

int tbl_line

Definition at line 23 of file pick_engine.c.

tbl_page

int tbl_page

Definition at line 23 of file pick_engine.c.

tbl_pages

int tbl_pages

Definition at line 23 of file pick_engine.c.