/*
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* Minimal command line editing
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* Copyright (c) 2010, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "eloop.h"
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#include "edit.h"
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#define CMD_BUF_LEN 4096
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static char cmdbuf[CMD_BUF_LEN];
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static int cmdbuf_pos = 0;
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static const char *ps2 = NULL;
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static void *edit_cb_ctx;
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static void (*edit_cmd_cb)(void *ctx, char *cmd);
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static void (*edit_eof_cb)(void *ctx);
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static void edit_read_char(int sock, void *eloop_ctx, void *sock_ctx)
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{
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int c;
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unsigned char buf[1];
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int res;
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res = read(sock, buf, 1);
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if (res < 0)
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perror("read");
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if (res <= 0) {
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edit_eof_cb(edit_cb_ctx);
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return;
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}
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c = buf[0];
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if (c == '\r' || c == '\n') {
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cmdbuf[cmdbuf_pos] = '\0';
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cmdbuf_pos = 0;
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edit_cmd_cb(edit_cb_ctx, cmdbuf);
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printf("%s> ", ps2 ? ps2 : "");
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fflush(stdout);
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return;
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}
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if (c == '\b') {
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if (cmdbuf_pos > 0)
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cmdbuf_pos--;
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return;
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}
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if (c >= 32 && c <= 255) {
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if (cmdbuf_pos < (int) sizeof(cmdbuf) - 1) {
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cmdbuf[cmdbuf_pos++] = c;
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}
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}
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}
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int edit_init(void (*cmd_cb)(void *ctx, char *cmd),
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void (*eof_cb)(void *ctx),
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char ** (*completion_cb)(void *ctx, const char *cmd, int pos),
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void *ctx, const char *history_file, const char *ps)
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{
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edit_cb_ctx = ctx;
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edit_cmd_cb = cmd_cb;
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edit_eof_cb = eof_cb;
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eloop_register_read_sock(STDIN_FILENO, edit_read_char, NULL, NULL);
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ps2 = ps;
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printf("%s> ", ps2 ? ps2 : "");
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fflush(stdout);
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return 0;
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}
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void edit_deinit(const char *history_file,
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int (*filter_cb)(void *ctx, const char *cmd))
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{
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eloop_unregister_read_sock(STDIN_FILENO);
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}
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void edit_clear_line(void)
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{
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}
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void edit_redraw(void)
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{
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cmdbuf[cmdbuf_pos] = '\0';
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printf("\r> %s", cmdbuf);
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}
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