1252190Srpaulo/* 2252190Srpaulo * Minimal command line editing 3252190Srpaulo * Copyright (c) 2010, Jouni Malinen <j@w1.fi> 4252190Srpaulo * 5252190Srpaulo * This software may be distributed under the terms of the BSD license. 6252190Srpaulo * See README for more details. 7252190Srpaulo */ 8252190Srpaulo 9252190Srpaulo#include "includes.h" 10252190Srpaulo 11252190Srpaulo#include "common.h" 12252190Srpaulo#include "eloop.h" 13252190Srpaulo#include "edit.h" 14252190Srpaulo 15252190Srpaulo 16252190Srpaulo#define CMD_BUF_LEN 256 17252190Srpaulostatic char cmdbuf[CMD_BUF_LEN]; 18252190Srpaulostatic int cmdbuf_pos = 0; 19252190Srpaulostatic const char *ps2 = NULL; 20252190Srpaulo 21252190Srpaulostatic void *edit_cb_ctx; 22252190Srpaulostatic void (*edit_cmd_cb)(void *ctx, char *cmd); 23252190Srpaulostatic void (*edit_eof_cb)(void *ctx); 24252190Srpaulo 25252190Srpaulo 26252190Srpaulostatic void edit_read_char(int sock, void *eloop_ctx, void *sock_ctx) 27252190Srpaulo{ 28252190Srpaulo int c; 29252190Srpaulo unsigned char buf[1]; 30252190Srpaulo int res; 31252190Srpaulo 32252190Srpaulo res = read(sock, buf, 1); 33252190Srpaulo if (res < 0) 34252190Srpaulo perror("read"); 35252190Srpaulo if (res <= 0) { 36252190Srpaulo edit_eof_cb(edit_cb_ctx); 37252190Srpaulo return; 38252190Srpaulo } 39252190Srpaulo c = buf[0]; 40252190Srpaulo 41252190Srpaulo if (c == '\r' || c == '\n') { 42252190Srpaulo cmdbuf[cmdbuf_pos] = '\0'; 43252190Srpaulo cmdbuf_pos = 0; 44252190Srpaulo edit_cmd_cb(edit_cb_ctx, cmdbuf); 45252190Srpaulo printf("%s> ", ps2 ? ps2 : ""); 46252190Srpaulo fflush(stdout); 47252190Srpaulo return; 48252190Srpaulo } 49252190Srpaulo 50252190Srpaulo if (c >= 32 && c <= 255) { 51252190Srpaulo if (cmdbuf_pos < (int) sizeof(cmdbuf) - 1) { 52252190Srpaulo cmdbuf[cmdbuf_pos++] = c; 53252190Srpaulo } 54252190Srpaulo } 55252190Srpaulo} 56252190Srpaulo 57252190Srpaulo 58252190Srpauloint edit_init(void (*cmd_cb)(void *ctx, char *cmd), 59252190Srpaulo void (*eof_cb)(void *ctx), 60252190Srpaulo char ** (*completion_cb)(void *ctx, const char *cmd, int pos), 61252190Srpaulo void *ctx, const char *history_file, const char *ps) 62252190Srpaulo{ 63252190Srpaulo edit_cb_ctx = ctx; 64252190Srpaulo edit_cmd_cb = cmd_cb; 65252190Srpaulo edit_eof_cb = eof_cb; 66252190Srpaulo eloop_register_read_sock(STDIN_FILENO, edit_read_char, NULL, NULL); 67252190Srpaulo ps2 = ps; 68252190Srpaulo 69252190Srpaulo printf("%s> ", ps2 ? ps2 : ""); 70252190Srpaulo fflush(stdout); 71252190Srpaulo 72252190Srpaulo return 0; 73252190Srpaulo} 74252190Srpaulo 75252190Srpaulo 76252190Srpaulovoid edit_deinit(const char *history_file, 77252190Srpaulo int (*filter_cb)(void *ctx, const char *cmd)) 78252190Srpaulo{ 79252190Srpaulo eloop_unregister_read_sock(STDIN_FILENO); 80252190Srpaulo} 81252190Srpaulo 82252190Srpaulo 83252190Srpaulovoid edit_clear_line(void) 84252190Srpaulo{ 85252190Srpaulo} 86252190Srpaulo 87252190Srpaulo 88252190Srpaulovoid edit_redraw(void) 89252190Srpaulo{ 90252190Srpaulo cmdbuf[cmdbuf_pos] = '\0'; 91252190Srpaulo printf("\r> %s", cmdbuf); 92252190Srpaulo} 93