leadr 2.8.6

Shell aliases on steroids
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

__leadr_invoke__() {
    LEADR_COMMAND_POSITION_ENCODING="#COMMAND"
    LEADR_CURSOR_POSITION_ENCODING="#CURSOR"

    leadr_parse_flags() {
        local flag_str="$1"
        local insert=""
        local eval="false"
        local exec="false"

        IFS='+' read -r -a flags_array <<< "$flag_str"
        for flag in "${flags_array[@]}"; do
            case "$flag" in
                REPLACE | INSERT | PREPEND | APPEND | SURROUND) insert="$flag" ;;
                EVAL) eval="true" ;;
                EXEC) exec="true" ;;
            esac
        done

        echo "$insert|$eval|$exec"
    }

    leadr_extract_cursor_pos() {
        local input="$1"
        if [[ "$input" == *"$LEADR_CURSOR_POSITION_ENCODING"* ]]; then
            local before="${input%%$LEADR_CURSOR_POSITION_ENCODING*}"
            echo "${#before}"
        else
            echo "-1"
        fi
    }

    leadr_insert_command() {
        local insert_type="$1"
        local to_insert="$2"
        local cursor_pos="$3"

        local original_point=$READLINE_POINT
        local original_line="$READLINE_LINE"

        case "$insert_type" in
            INSERT)
                READLINE_LINE="${original_line:0:original_point}${to_insert}${original_line:original_point}"
                if [[ $cursor_pos -ge 0 ]]; then
                    READLINE_POINT=$((original_point + cursor_pos))
                else
                    READLINE_POINT=$((original_point + ${#to_insert}))
                fi
                ;;
            PREPEND)
                READLINE_LINE="${to_insert}${original_line}"
                if [[ $cursor_pos -ge 0 ]]; then
                    READLINE_POINT=$cursor_pos
                else
                    READLINE_POINT=$((original_point + ${#to_insert}))
                fi
                ;;
            APPEND)
                READLINE_LINE="${original_line}${to_insert}"
                if [[ $cursor_pos -ge 0 ]]; then
                    READLINE_POINT=$((${#original_line} + cursor_pos))
                else
                    READLINE_POINT=${#READLINE_LINE}
                fi
                ;;
            SURROUND)
                local before_command="${to_insert%%#COMMAND*}"
                local after_command="${to_insert#*#COMMAND}"
                READLINE_LINE="${before_command}${original_line}${after_command}"

                if [[ $cursor_pos -ge 0 ]]; then
                    if [[ $cursor_pos -le ${#before_command} ]]; then
                        # If the cursor position is before the command, we can use it directly
                        READLINE_POINT=$cursor_pos
                    else
                        # If the cursor position is after the command, we need to account for the command expansion
                        READLINE_POINT=$((cursor_pos - ${#LEADR_COMMAND_POSITION_ENCODING} + ${#original_line}))
                    fi
                else
                    READLINE_POINT=$((${#before_command} + original_point))
                fi
                ;;
            *)
                READLINE_LINE="$to_insert"
                if [[ $cursor_pos -ge 0 ]]; then
                    READLINE_POINT=$cursor_pos
                else
                    READLINE_POINT=${#READLINE_LINE}
                fi
                ;;
        esac
    }

    leadr_execute_command() {
        local cmd="$1"
        READLINE_LINE=""
        READLINE_POINT=0
        if [[ -n "$TMUX" ]]; then
            tmux send-keys "$cmd" Enter
        else
            printf "%s\n" "$cmd"
            history -s "$cmd"
            eval "$cmd"
        fi
    }

    leadr_main() {
        local last_prompt_line=$(printf "%s" "${PS1@P}" | tail -n1)
        local current_input="${READLINE_LINE}"

        local cmd="$(
            LEADR_PROMPT="$last_prompt_line" \
                LEADR_CURRENT_INPUT="$current_input" \
                leadr
        )"

        local output_flags="${cmd%% *}"
        local to_insert="${cmd#* }"

        if [[ -z "$cmd" ]]; then
            return
        fi

        local insert_type eval_flag exec_flag
        IFS='|' read -r insert_type eval_flag exec_flag <<< "$(leadr_parse_flags "$output_flags")"

        local cursor_pos="$(leadr_extract_cursor_pos "$to_insert")"
        to_insert="${to_insert//$LEADR_CURSOR_POSITION_ENCODING/}"

        if [[ "$eval_flag" == "true" ]]; then
            to_insert="$(eval "$to_insert")"
            cursor_pos=-1
        fi

        leadr_insert_command "$insert_type" "$to_insert" "$cursor_pos"

        if [[ "$exec_flag" == "true" ]]; then
            leadr_execute_command "$READLINE_LINE"
        fi
    }

    leadr_main
}