--- /dev/null
+/* cli.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ *
+ * author: Daniel Otte
+ * email: daniel.otte@rub.de
+ * license: GPLv3 or later
+ *
+ * components to help implementing simple command based interaction
+ *
+ **/
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <ctype.h>
+#include <string.h>
+#include <avr/pgmspace.h>
+#include "string-extras.h"
+#include "cli.h"
+#include "config.h"
+#include "hexdigit_tab.h"
+
+cli_rx_fpt cli_rx = NULL;
+cli_tx_fpt cli_tx = NULL;
+uint8_t cli_echo=1;
+
+void echo_ctrl(char* s);
+uint16_t max_cmd_length(PGM_VOID_P cmdlist);
+int8_t search_and_call(char* cmd, uint16_t maxcmdlength, PGM_VOID_P cmdlist);
+void cli_option_listing(char* buffer, PGM_VOID_P cmdlist);
+
+
+void cli_auto_help(uint16_t maxcmdlength, PGM_VOID_P cmdlist);/*
+{
+ cmdlist_entry_t item;
+ uint16_t i;
+ if(!cli_tx)
+ return;
+
+ cli_putstr_P(PSTR("\r\n[auto help] available commands:\r\n"
+ " <command> - <params> - <address>\r\n"));
+ for(;;){
+ item.cmd_name = (void*)pgm_read_word(cmdlist+0);
+ item.cmd_param_str = (void*)pgm_read_word(cmdlist+2);
+ item.cmd_function = (void_fpt)pgm_read_word(cmdlist+4);
+ cmdlist = (uint8_t*)cmdlist+CMDLIST_ENTRY_SIZE;
+ if(item.cmd_name==NULL){
+ return;
+ }
+ cli_tx(' ');
+ cli_putstr_P(item.cmd_name);
+ i=maxcmdlength-strlen_P(item.cmd_name);
+ while(i--)
+ cli_tx(' ');
+ cli_putstr_P(PSTR(" - "));
+ if(item.cmd_param_str==NULL){
+ cli_putstr_P(PSTR("none \t- 0x"));
+ } else {
+ if(item.cmd_param_str==(void*)1){
+ cli_putstr_P(PSTR("yes \t- 0x"));
+ } else {
+ cli_putstr_P(item.cmd_param_str);
+ cli_putstr_P(PSTR(" \t- 0x"));
+ }
+ }
+ cli_hexdump_rev(&item.cmd_function, 2);
+ cli_putstr_P(PSTR("\r\n"));
+ }
+}
+*/
+typedef void(*str_fpt)(char*);
+#define CLI_ENTER 13
+#define CLI_BACKSPACE 8
+#define CLI_TABULATOR 9
+
+uint8_t cli_completion(char* buffer, uint16_t maxcmdlength, PGM_VOID_P cmdlist){
+ uint8_t i=0;
+ char ref[maxcmdlength+1];
+ char* itemstr;
+ ref[0]='\0';
+ /* check if we are behind the first word */
+ while(buffer[i]){
+ if(!isgraph(buffer[i++]))
+ return 0;
+ }
+ for(;;){
+ itemstr = (char*)pgm_read_word(cmdlist);
+ if(itemstr==NULL)
+ break;
+ cmdlist = (uint8_t*)cmdlist +CMDLIST_ENTRY_SIZE;
+ if(!strncmp_P(buffer, itemstr, i)){
+ if(!ref[0]){
+ strcpy_P(ref, itemstr);
+ }else{
+ ref[stridentcnt_P(ref, itemstr)]='\0';
+ }
+ }
+ }
+ i = strcmp(buffer, ref);
+ if(i)
+ strcpy(buffer, ref);
+ return ~i;
+}
+
+int8_t cmd_interface(PGM_VOID_P cmd_desc){
+ uint16_t cli_buffer_size;
+ uint16_t cli_buffer_index;
+ int8_t exit_code;
+ uint8_t completion_failed=0;
+ char* cli_buffer;
+ char c;
+ uint16_t maxcmdlength = max_cmd_length(cmd_desc);
+ cli_buffer = calloc(1,cli_buffer_size=maxcmdlength+2);
+ cli_buffer_index=0;
+ if(!cli_rx)
+ return -1;
+ if(cli_tx)
+ cli_tx('>');
+ for(;;){
+ c = cli_rx();
+ switch (c){
+ case CLI_ENTER:
+ if((exit_code=search_and_call(cli_buffer, maxcmdlength, cmd_desc))<=0){
+ free(cli_buffer);
+ return exit_code;
+ }
+ memset(cli_buffer, 0, cli_buffer_size);
+ cli_buffer_index=0;
+ cli_putstr_P(PSTR("\r\n>"));
+ completion_failed=0;
+ break;
+ case CLI_BACKSPACE:
+ completion_failed=0;
+ if(cli_buffer_index==0)
+ break;
+ cli_buffer_index--;
+ cli_buffer[cli_buffer_index] = '\0';
+ if(cli_echo && cli_tx){
+ cli_tx(c);
+ }
+ break;
+ case CLI_TABULATOR:
+ if(completion_failed || cli_buffer_index==0){
+ if(cli_tx)
+ cli_option_listing(cli_buffer, cmd_desc);
+ } else {
+ uint16_t old_idx = cli_buffer_index;
+ completion_failed =
+ ~cli_completion(cli_buffer, maxcmdlength, cmd_desc);
+ cli_buffer_index = strlen(cli_buffer);
+ if(cli_echo && cli_tx){
+ while(old_idx<cli_buffer_index){
+ cli_tx(cli_buffer[old_idx++]);
+ }
+ }
+ }
+ break;
+ default:
+ completion_failed=0;
+ if(cli_echo && cli_tx){
+ cli_tx(c);
+ }
+ if(cli_buffer_index+1==cli_buffer_size){
+ cli_buffer = realloc(cli_buffer, cli_buffer_size+=CLI_BUFFER_BS);
+ if(!cli_buffer){
+ return -2;
+ }
+ memset(cli_buffer+cli_buffer_index+1, 0, CLI_BUFFER_BS);
+ }
+ cli_buffer[cli_buffer_index++] = c;
+ }
+ }
+}
projects / avr-crypto-lib.git / blobdiff