Jason Reiss
/
tinyshell
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Fork of
tinyshell
by 
Murilo Pontes
tinysh.c@3:d027360b1892, 2017-12-27 (annotated)
- Committer:
- jasonreiss
- Date:
- Wed Dec 27 23:13:26 2017 +0000
- Revision:
- 3:d027360b1892
- Parent:
- 2:c57737fee604
adjust help description
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| murilopontes | 0:78b46c0d5246 | 1 | /* |
| murilopontes | 0:78b46c0d5246 | 2 | * tinysh.c |
| murilopontes | 0:78b46c0d5246 | 3 | * |
| murilopontes | 0:78b46c0d5246 | 4 | * Minimal portable shell |
| murilopontes | 0:78b46c0d5246 | 5 | * |
| murilopontes | 0:78b46c0d5246 | 6 | * Copyright (C) 2001 Michel Gutierrez <mig@nerim.net> |
| murilopontes | 0:78b46c0d5246 | 7 | * |
| murilopontes | 0:78b46c0d5246 | 8 | * This library is free software; you can redistribute it and/or |
| murilopontes | 0:78b46c0d5246 | 9 | * modify it under the terms of the GNU Lesser General Public |
| murilopontes | 0:78b46c0d5246 | 10 | * License as published by the Free Software Foundation; either |
| murilopontes | 0:78b46c0d5246 | 11 | * version 2.1 of the License, or (at your option) any later version. |
| murilopontes | 0:78b46c0d5246 | 12 | * |
| murilopontes | 0:78b46c0d5246 | 13 | * This library is distributed in the hope that it will be useful, |
| murilopontes | 0:78b46c0d5246 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| murilopontes | 0:78b46c0d5246 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| murilopontes | 0:78b46c0d5246 | 16 | * Lesser General Public License for more details. |
| murilopontes | 0:78b46c0d5246 | 17 | * |
| murilopontes | 0:78b46c0d5246 | 18 | * You should have received a copy of the GNU Lesser General Public |
| murilopontes | 0:78b46c0d5246 | 19 | * License along with this library; if not, write to the Free |
| murilopontes | 0:78b46c0d5246 | 20 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| murilopontes | 0:78b46c0d5246 | 21 | */ |
| murilopontes | 0:78b46c0d5246 | 22 | |
| murilopontes | 0:78b46c0d5246 | 23 | #include "tinysh.h" |
| murilopontes | 0:78b46c0d5246 | 24 | |
| murilopontes | 0:78b46c0d5246 | 25 | #ifndef BUFFER_SIZE |
| murilopontes | 0:78b46c0d5246 | 26 | #define BUFFER_SIZE 64 |
| murilopontes | 0:78b46c0d5246 | 27 | #endif |
| murilopontes | 0:78b46c0d5246 | 28 | #ifndef HISTORY_DEPTH |
| murilopontes | 0:78b46c0d5246 | 29 | #define HISTORY_DEPTH 3 |
| murilopontes | 0:78b46c0d5246 | 30 | #endif |
| murilopontes | 0:78b46c0d5246 | 31 | #ifndef MAX_ARGS |
| murilopontes | 0:78b46c0d5246 | 32 | #define MAX_ARGS 4 |
| murilopontes | 0:78b46c0d5246 | 33 | #endif |
| murilopontes | 0:78b46c0d5246 | 34 | #ifndef PROMPT_SIZE |
| murilopontes | 0:78b46c0d5246 | 35 | #define PROMPT_SIZE 4 |
| murilopontes | 0:78b46c0d5246 | 36 | #endif |
| murilopontes | 0:78b46c0d5246 | 37 | #ifndef TOPCHAR |
| murilopontes | 0:78b46c0d5246 | 38 | #define TOPCHAR '/' |
| murilopontes | 0:78b46c0d5246 | 39 | #endif |
| murilopontes | 0:78b46c0d5246 | 40 | |
| murilopontes | 0:78b46c0d5246 | 41 | typedef unsigned char uchar; |
| murilopontes | 0:78b46c0d5246 | 42 | /* redefine some useful and maybe missing utilities to avoid conflicts */ |
| murilopontes | 0:78b46c0d5246 | 43 | #define strlen tinysh_strlen |
| murilopontes | 0:78b46c0d5246 | 44 | #define puts tinysh_puts |
| murilopontes | 0:78b46c0d5246 | 45 | #define putchar tinysh_char_out |
| murilopontes | 0:78b46c0d5246 | 46 | |
| murilopontes | 0:78b46c0d5246 | 47 | static void help_fnt(int argc, char **argv); |
| murilopontes | 0:78b46c0d5246 | 48 | |
| murilopontes | 0:78b46c0d5246 | 49 | static tinysh_cmd_t help_cmd={ |
| jasonreiss | 3:d027360b1892 | 50 | 0,"help","Display help","<cr>",help_fnt,0,0,0 }; |
| murilopontes | 0:78b46c0d5246 | 51 | |
| murilopontes | 0:78b46c0d5246 | 52 | static uchar input_buffers[HISTORY_DEPTH][BUFFER_SIZE+1]={0}; |
| murilopontes | 0:78b46c0d5246 | 53 | static uchar trash_buffer[BUFFER_SIZE+1]={0}; |
| murilopontes | 0:78b46c0d5246 | 54 | static int cur_buf_index=0; |
| murilopontes | 0:78b46c0d5246 | 55 | static uchar context_buffer[BUFFER_SIZE+1]={0}; |
| murilopontes | 0:78b46c0d5246 | 56 | static int cur_context=0; |
| murilopontes | 0:78b46c0d5246 | 57 | static int cur_index=0; |
| murilopontes | 0:78b46c0d5246 | 58 | static int echo=1; |
| murilopontes | 0:78b46c0d5246 | 59 | static char prompt[PROMPT_SIZE+1]="$ "; |
| murilopontes | 0:78b46c0d5246 | 60 | static tinysh_cmd_t *root_cmd=&help_cmd; |
| murilopontes | 0:78b46c0d5246 | 61 | static tinysh_cmd_t *cur_cmd_ctx=0; |
| murilopontes | 0:78b46c0d5246 | 62 | static void *tinysh_arg=0; |
| murilopontes | 0:78b46c0d5246 | 63 | |
| murilopontes | 0:78b46c0d5246 | 64 | /* few useful utilities that may be missing */ |
| murilopontes | 0:78b46c0d5246 | 65 | |
| murilopontes | 0:78b46c0d5246 | 66 | static int strlen(uchar *s) |
| murilopontes | 0:78b46c0d5246 | 67 | { |
| murilopontes | 0:78b46c0d5246 | 68 | int i; |
| murilopontes | 0:78b46c0d5246 | 69 | for(i=0;*s;s++,i++); |
| murilopontes | 0:78b46c0d5246 | 70 | return i; |
| murilopontes | 0:78b46c0d5246 | 71 | } |
| murilopontes | 0:78b46c0d5246 | 72 | |
| murilopontes | 0:78b46c0d5246 | 73 | static void puts(char *s) |
| murilopontes | 0:78b46c0d5246 | 74 | { |
| murilopontes | 0:78b46c0d5246 | 75 | while(*s) |
| murilopontes | 0:78b46c0d5246 | 76 | putchar(*s++); |
| murilopontes | 0:78b46c0d5246 | 77 | } |
| murilopontes | 0:78b46c0d5246 | 78 | |
| murilopontes | 0:78b46c0d5246 | 79 | /* callback for help function |
| murilopontes | 0:78b46c0d5246 | 80 | */ |
| murilopontes | 0:78b46c0d5246 | 81 | static void help_fnt(int argc, char **argv) |
| murilopontes | 0:78b46c0d5246 | 82 | { |
| murilopontes | 0:78b46c0d5246 | 83 | puts("? display help on given or available commands\r\n"); |
| murilopontes | 0:78b46c0d5246 | 84 | puts("<TAB> auto-completion\r\n"); |
| murilopontes | 0:78b46c0d5246 | 85 | puts("<cr> execute command line\r\n"); |
| murilopontes | 0:78b46c0d5246 | 86 | puts("CTRL-P recall previous input line\r\n"); |
| murilopontes | 0:78b46c0d5246 | 87 | puts("CTRL-N recall next input line\r\n"); |
| murilopontes | 0:78b46c0d5246 | 88 | puts("<any> treat as input character\r\n"); |
| murilopontes | 0:78b46c0d5246 | 89 | } |
| murilopontes | 0:78b46c0d5246 | 90 | |
| murilopontes | 0:78b46c0d5246 | 91 | /* |
| murilopontes | 0:78b46c0d5246 | 92 | */ |
| murilopontes | 0:78b46c0d5246 | 93 | |
| murilopontes | 0:78b46c0d5246 | 94 | enum { NULLMATCH,FULLMATCH,PARTMATCH,UNMATCH,MATCH,AMBIG }; |
| murilopontes | 0:78b46c0d5246 | 95 | |
| murilopontes | 0:78b46c0d5246 | 96 | /* verify if the non-spaced part of s2 is included at the begining |
| murilopontes | 0:78b46c0d5246 | 97 | * of s1. |
| murilopontes | 0:78b46c0d5246 | 98 | * return FULLMATCH if s2 equal to s1, PARTMATCH if s1 starts with s2 |
| murilopontes | 0:78b46c0d5246 | 99 | * but there are remaining chars in s1, UNMATCH if s1 does not start with |
| murilopontes | 0:78b46c0d5246 | 100 | * s2 |
| murilopontes | 0:78b46c0d5246 | 101 | */ |
| murilopontes | 0:78b46c0d5246 | 102 | int strstart(uchar *s1, uchar *s2) |
| murilopontes | 0:78b46c0d5246 | 103 | { |
| murilopontes | 0:78b46c0d5246 | 104 | while(*s1 && *s1==*s2) { s1++; s2++; } |
| murilopontes | 0:78b46c0d5246 | 105 | |
| murilopontes | 0:78b46c0d5246 | 106 | if(*s2==' ' || *s2==0) |
| murilopontes | 0:78b46c0d5246 | 107 | { |
| murilopontes | 0:78b46c0d5246 | 108 | if(*s1==0) |
| murilopontes | 0:78b46c0d5246 | 109 | return FULLMATCH; /* full match */ |
| murilopontes | 0:78b46c0d5246 | 110 | else |
| murilopontes | 0:78b46c0d5246 | 111 | return PARTMATCH; /* partial match */ |
| murilopontes | 0:78b46c0d5246 | 112 | } |
| murilopontes | 0:78b46c0d5246 | 113 | else |
| murilopontes | 0:78b46c0d5246 | 114 | return UNMATCH; /* no match */ |
| murilopontes | 0:78b46c0d5246 | 115 | } |
| murilopontes | 0:78b46c0d5246 | 116 | |
| murilopontes | 0:78b46c0d5246 | 117 | /* |
| murilopontes | 0:78b46c0d5246 | 118 | * check commands at given level with input string. |
| murilopontes | 0:78b46c0d5246 | 119 | * _cmd: point to first command at this level, return matched cmd |
| murilopontes | 0:78b46c0d5246 | 120 | * _str: point to current unprocessed input, return next unprocessed |
| murilopontes | 0:78b46c0d5246 | 121 | */ |
| murilopontes | 0:78b46c0d5246 | 122 | static int parse_command(tinysh_cmd_t **_cmd, uchar **_str) |
| murilopontes | 0:78b46c0d5246 | 123 | { |
| murilopontes | 0:78b46c0d5246 | 124 | uchar *str=*_str; |
| murilopontes | 0:78b46c0d5246 | 125 | tinysh_cmd_t *cmd; |
| murilopontes | 0:78b46c0d5246 | 126 | int matched_len=0; |
| murilopontes | 0:78b46c0d5246 | 127 | tinysh_cmd_t *matched_cmd=0; |
| murilopontes | 0:78b46c0d5246 | 128 | |
| murilopontes | 0:78b46c0d5246 | 129 | /* first eliminate first blanks */ |
| murilopontes | 0:78b46c0d5246 | 130 | while(*str==' ') str++; |
| murilopontes | 0:78b46c0d5246 | 131 | if(!*str) |
| murilopontes | 0:78b46c0d5246 | 132 | { |
| murilopontes | 0:78b46c0d5246 | 133 | *_str=str; |
| murilopontes | 0:78b46c0d5246 | 134 | return NULLMATCH; /* end of input */ |
| murilopontes | 0:78b46c0d5246 | 135 | } |
| murilopontes | 0:78b46c0d5246 | 136 | |
| murilopontes | 0:78b46c0d5246 | 137 | /* first pass: count matches */ |
| murilopontes | 0:78b46c0d5246 | 138 | for(cmd=*_cmd;cmd;cmd=cmd->next) |
| murilopontes | 0:78b46c0d5246 | 139 | { |
| murilopontes | 0:78b46c0d5246 | 140 | int ret=strstart(cmd->name,str); |
| murilopontes | 0:78b46c0d5246 | 141 | |
| murilopontes | 0:78b46c0d5246 | 142 | if(ret==FULLMATCH) |
| murilopontes | 0:78b46c0d5246 | 143 | { |
| murilopontes | 0:78b46c0d5246 | 144 | /* found full match */ |
| murilopontes | 0:78b46c0d5246 | 145 | while(*str && *str!=' ') str++; |
| murilopontes | 0:78b46c0d5246 | 146 | while(*str==' ') str++; |
| murilopontes | 0:78b46c0d5246 | 147 | *_str=str; |
| murilopontes | 0:78b46c0d5246 | 148 | *_cmd=cmd; |
| murilopontes | 0:78b46c0d5246 | 149 | return MATCH; |
| murilopontes | 0:78b46c0d5246 | 150 | } |
| murilopontes | 0:78b46c0d5246 | 151 | else if (ret==PARTMATCH) |
| murilopontes | 0:78b46c0d5246 | 152 | { |
| murilopontes | 0:78b46c0d5246 | 153 | if(matched_cmd) |
| murilopontes | 0:78b46c0d5246 | 154 | { |
| murilopontes | 0:78b46c0d5246 | 155 | *_cmd=matched_cmd; |
| murilopontes | 0:78b46c0d5246 | 156 | return AMBIG; |
| murilopontes | 0:78b46c0d5246 | 157 | } |
| murilopontes | 0:78b46c0d5246 | 158 | else |
| murilopontes | 0:78b46c0d5246 | 159 | { |
| murilopontes | 0:78b46c0d5246 | 160 | matched_cmd=cmd; |
| murilopontes | 0:78b46c0d5246 | 161 | } |
| murilopontes | 0:78b46c0d5246 | 162 | } |
| murilopontes | 0:78b46c0d5246 | 163 | else /* UNMATCH */ |
| murilopontes | 0:78b46c0d5246 | 164 | { |
| murilopontes | 0:78b46c0d5246 | 165 | } |
| murilopontes | 0:78b46c0d5246 | 166 | } |
| murilopontes | 0:78b46c0d5246 | 167 | if(matched_cmd) |
| murilopontes | 0:78b46c0d5246 | 168 | { |
| murilopontes | 0:78b46c0d5246 | 169 | while(*str && *str!=' ') str++; |
| murilopontes | 0:78b46c0d5246 | 170 | while(*str==' ') str++; |
| murilopontes | 0:78b46c0d5246 | 171 | *_cmd=matched_cmd; |
| murilopontes | 0:78b46c0d5246 | 172 | *_str=str; |
| murilopontes | 0:78b46c0d5246 | 173 | return MATCH; |
| murilopontes | 0:78b46c0d5246 | 174 | } |
| murilopontes | 0:78b46c0d5246 | 175 | else |
| murilopontes | 0:78b46c0d5246 | 176 | return UNMATCH; |
| murilopontes | 0:78b46c0d5246 | 177 | } |
| murilopontes | 0:78b46c0d5246 | 178 | |
| murilopontes | 0:78b46c0d5246 | 179 | /* create a context from current input line |
| murilopontes | 0:78b46c0d5246 | 180 | */ |
| murilopontes | 0:78b46c0d5246 | 181 | static void do_context(tinysh_cmd_t *cmd, uchar *str) |
| murilopontes | 0:78b46c0d5246 | 182 | { |
| murilopontes | 0:78b46c0d5246 | 183 | while(*str) |
| murilopontes | 0:78b46c0d5246 | 184 | context_buffer[cur_context++]=*str++; |
| murilopontes | 0:78b46c0d5246 | 185 | context_buffer[cur_context]=0; |
| murilopontes | 0:78b46c0d5246 | 186 | cur_cmd_ctx=cmd; |
| murilopontes | 0:78b46c0d5246 | 187 | } |
| murilopontes | 0:78b46c0d5246 | 188 | |
| murilopontes | 0:78b46c0d5246 | 189 | /* execute the given command by calling callback with appropriate |
| murilopontes | 0:78b46c0d5246 | 190 | * arguments |
| murilopontes | 0:78b46c0d5246 | 191 | */ |
| murilopontes | 0:78b46c0d5246 | 192 | static void exec_command(tinysh_cmd_t *cmd, uchar *str) |
| murilopontes | 0:78b46c0d5246 | 193 | { |
| murilopontes | 0:78b46c0d5246 | 194 | char *argv[MAX_ARGS]; |
| murilopontes | 0:78b46c0d5246 | 195 | int argc=0; |
| murilopontes | 0:78b46c0d5246 | 196 | int i; |
| murilopontes | 0:78b46c0d5246 | 197 | |
| murilopontes | 0:78b46c0d5246 | 198 | /* copy command line to preserve it for history */ |
| murilopontes | 0:78b46c0d5246 | 199 | for(i=0;i<BUFFER_SIZE;i++) |
| murilopontes | 0:78b46c0d5246 | 200 | trash_buffer[i]=str[i]; |
| murilopontes | 0:78b46c0d5246 | 201 | str=trash_buffer; |
| murilopontes | 0:78b46c0d5246 | 202 | |
| murilopontes | 0:78b46c0d5246 | 203 | /* cut into arguments */ |
| murilopontes | 0:78b46c0d5246 | 204 | argv[argc++]=cmd->name; |
| murilopontes | 0:78b46c0d5246 | 205 | while(*str && argc<MAX_ARGS) |
| murilopontes | 0:78b46c0d5246 | 206 | { |
| murilopontes | 0:78b46c0d5246 | 207 | while(*str==' ') str++; |
| murilopontes | 0:78b46c0d5246 | 208 | if(*str==0) |
| murilopontes | 0:78b46c0d5246 | 209 | break; |
| murilopontes | 0:78b46c0d5246 | 210 | argv[argc++]=str; |
| murilopontes | 0:78b46c0d5246 | 211 | while(*str!=' ' && *str) str++; |
| murilopontes | 0:78b46c0d5246 | 212 | if(!*str) break; |
| murilopontes | 0:78b46c0d5246 | 213 | *str++=0; |
| murilopontes | 0:78b46c0d5246 | 214 | } |
| murilopontes | 0:78b46c0d5246 | 215 | /* call command function if present */ |
| murilopontes | 0:78b46c0d5246 | 216 | if(cmd->function) |
| murilopontes | 0:78b46c0d5246 | 217 | { |
| murilopontes | 0:78b46c0d5246 | 218 | tinysh_arg=cmd->arg; |
| murilopontes | 0:78b46c0d5246 | 219 | cmd->function(argc,&argv[0]); |
| murilopontes | 0:78b46c0d5246 | 220 | } |
| murilopontes | 0:78b46c0d5246 | 221 | } |
| murilopontes | 0:78b46c0d5246 | 222 | |
| murilopontes | 0:78b46c0d5246 | 223 | /* try to execute the current command line |
| murilopontes | 0:78b46c0d5246 | 224 | */ |
| murilopontes | 0:78b46c0d5246 | 225 | static int exec_command_line(tinysh_cmd_t *cmd, uchar *_str) |
| murilopontes | 0:78b46c0d5246 | 226 | { |
| murilopontes | 0:78b46c0d5246 | 227 | uchar *str=_str; |
| murilopontes | 0:78b46c0d5246 | 228 | |
| murilopontes | 0:78b46c0d5246 | 229 | while(1) |
| murilopontes | 0:78b46c0d5246 | 230 | { |
| murilopontes | 0:78b46c0d5246 | 231 | int ret; |
| murilopontes | 0:78b46c0d5246 | 232 | ret=parse_command(&cmd,&str); |
| murilopontes | 0:78b46c0d5246 | 233 | if(ret==MATCH) /* found unique match */ |
| murilopontes | 0:78b46c0d5246 | 234 | { |
| murilopontes | 0:78b46c0d5246 | 235 | if(cmd) |
| murilopontes | 0:78b46c0d5246 | 236 | { |
| murilopontes | 0:78b46c0d5246 | 237 | if(!cmd->child) /* no sub-command, execute */ |
| jasonreiss | 2:c57737fee604 | 238 | { |
| murilopontes | 0:78b46c0d5246 | 239 | exec_command(cmd,str); |
| murilopontes | 0:78b46c0d5246 | 240 | return 0; |
| murilopontes | 0:78b46c0d5246 | 241 | } |
| murilopontes | 0:78b46c0d5246 | 242 | else |
| murilopontes | 0:78b46c0d5246 | 243 | { |
| murilopontes | 0:78b46c0d5246 | 244 | if(*str==0) /* no more input, this is a context */ |
| murilopontes | 0:78b46c0d5246 | 245 | { |
| murilopontes | 0:78b46c0d5246 | 246 | do_context(cmd,_str); |
| murilopontes | 0:78b46c0d5246 | 247 | return 0; |
| murilopontes | 0:78b46c0d5246 | 248 | } |
| murilopontes | 0:78b46c0d5246 | 249 | else /* process next command word */ |
| murilopontes | 0:78b46c0d5246 | 250 | { |
| murilopontes | 0:78b46c0d5246 | 251 | cmd=cmd->child; |
| murilopontes | 0:78b46c0d5246 | 252 | } |
| murilopontes | 0:78b46c0d5246 | 253 | } |
| murilopontes | 0:78b46c0d5246 | 254 | } |
| murilopontes | 0:78b46c0d5246 | 255 | else /* cmd == 0 */ |
| murilopontes | 0:78b46c0d5246 | 256 | { |
| murilopontes | 0:78b46c0d5246 | 257 | return 0; |
| murilopontes | 0:78b46c0d5246 | 258 | } |
| murilopontes | 0:78b46c0d5246 | 259 | } |
| murilopontes | 0:78b46c0d5246 | 260 | else if(ret==AMBIG) |
| murilopontes | 0:78b46c0d5246 | 261 | { |
| murilopontes | 0:78b46c0d5246 | 262 | puts("ambiguity: "); |
| murilopontes | 0:78b46c0d5246 | 263 | puts(str); |
| murilopontes | 0:78b46c0d5246 | 264 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 265 | return 0; |
| murilopontes | 0:78b46c0d5246 | 266 | } |
| murilopontes | 0:78b46c0d5246 | 267 | else if(ret==UNMATCH) /* UNMATCH */ |
| murilopontes | 0:78b46c0d5246 | 268 | { |
| murilopontes | 0:78b46c0d5246 | 269 | puts("no match: "); |
| murilopontes | 0:78b46c0d5246 | 270 | puts(str); |
| murilopontes | 0:78b46c0d5246 | 271 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 272 | return 0; |
| murilopontes | 0:78b46c0d5246 | 273 | } |
| jasonreiss | 2:c57737fee604 | 274 | else { /* NULLMATCH */ |
| jasonreiss | 2:c57737fee604 | 275 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 276 | return 0; |
| jasonreiss | 2:c57737fee604 | 277 | } |
| murilopontes | 0:78b46c0d5246 | 278 | } |
| murilopontes | 0:78b46c0d5246 | 279 | } |
| murilopontes | 0:78b46c0d5246 | 280 | |
| murilopontes | 0:78b46c0d5246 | 281 | /* display help for list of commands |
| murilopontes | 0:78b46c0d5246 | 282 | */ |
| murilopontes | 0:78b46c0d5246 | 283 | static void display_child_help(tinysh_cmd_t *cmd) |
| murilopontes | 0:78b46c0d5246 | 284 | { |
| murilopontes | 0:78b46c0d5246 | 285 | tinysh_cmd_t *cm; |
| murilopontes | 0:78b46c0d5246 | 286 | int len=0; |
| murilopontes | 0:78b46c0d5246 | 287 | |
| murilopontes | 0:78b46c0d5246 | 288 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 289 | for(cm=cmd;cm;cm=cm->next) |
| murilopontes | 0:78b46c0d5246 | 290 | if(len<strlen(cm->name)) |
| murilopontes | 0:78b46c0d5246 | 291 | len=strlen(cm->name); |
| murilopontes | 0:78b46c0d5246 | 292 | for(cm=cmd;cm;cm=cm->next) |
| murilopontes | 0:78b46c0d5246 | 293 | if(cm->help) |
| murilopontes | 0:78b46c0d5246 | 294 | { |
| murilopontes | 0:78b46c0d5246 | 295 | int i; |
| murilopontes | 0:78b46c0d5246 | 296 | puts(cm->name); |
| murilopontes | 0:78b46c0d5246 | 297 | for(i=strlen(cm->name);i<len+2;i++) |
| murilopontes | 0:78b46c0d5246 | 298 | putchar(' '); |
| murilopontes | 0:78b46c0d5246 | 299 | puts(cm->help); |
| murilopontes | 0:78b46c0d5246 | 300 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 301 | } |
| murilopontes | 0:78b46c0d5246 | 302 | } |
| murilopontes | 0:78b46c0d5246 | 303 | |
| murilopontes | 0:78b46c0d5246 | 304 | /* try to display help for current comand line |
| murilopontes | 0:78b46c0d5246 | 305 | */ |
| murilopontes | 0:78b46c0d5246 | 306 | static int help_command_line(tinysh_cmd_t *cmd, uchar *_str) |
| murilopontes | 0:78b46c0d5246 | 307 | { |
| murilopontes | 0:78b46c0d5246 | 308 | uchar *str=_str; |
| murilopontes | 0:78b46c0d5246 | 309 | |
| murilopontes | 0:78b46c0d5246 | 310 | while(1) |
| murilopontes | 0:78b46c0d5246 | 311 | { |
| murilopontes | 0:78b46c0d5246 | 312 | int ret; |
| murilopontes | 0:78b46c0d5246 | 313 | ret=parse_command(&cmd,&str); |
| murilopontes | 0:78b46c0d5246 | 314 | if(ret==MATCH && *str==0) /* found unique match or empty line */ |
| murilopontes | 0:78b46c0d5246 | 315 | { |
| murilopontes | 0:78b46c0d5246 | 316 | tinysh_cmd_t *cm; |
| murilopontes | 0:78b46c0d5246 | 317 | int len=0; |
| murilopontes | 0:78b46c0d5246 | 318 | |
| murilopontes | 0:78b46c0d5246 | 319 | if(cmd->child) /* display sub-commands help */ |
| murilopontes | 0:78b46c0d5246 | 320 | { |
| murilopontes | 0:78b46c0d5246 | 321 | display_child_help(cmd->child); |
| murilopontes | 0:78b46c0d5246 | 322 | return 0; |
| murilopontes | 0:78b46c0d5246 | 323 | } |
| murilopontes | 0:78b46c0d5246 | 324 | else /* no sub-command, show single help */ |
| murilopontes | 0:78b46c0d5246 | 325 | { |
| murilopontes | 0:78b46c0d5246 | 326 | if(*(str-1)!=' ') |
| murilopontes | 0:78b46c0d5246 | 327 | putchar(' '); |
| murilopontes | 0:78b46c0d5246 | 328 | if(cmd->usage) |
| murilopontes | 0:78b46c0d5246 | 329 | puts(cmd->usage); |
| murilopontes | 0:78b46c0d5246 | 330 | puts(": "); |
| murilopontes | 0:78b46c0d5246 | 331 | if(cmd->help) |
| murilopontes | 0:78b46c0d5246 | 332 | puts(cmd->help); |
| murilopontes | 0:78b46c0d5246 | 333 | else |
| murilopontes | 0:78b46c0d5246 | 334 | puts("no help available"); |
| murilopontes | 0:78b46c0d5246 | 335 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 336 | } |
| murilopontes | 0:78b46c0d5246 | 337 | return 0; |
| murilopontes | 0:78b46c0d5246 | 338 | } |
| murilopontes | 0:78b46c0d5246 | 339 | else if(ret==MATCH && *str) |
| murilopontes | 0:78b46c0d5246 | 340 | { /* continue processing the line */ |
| murilopontes | 0:78b46c0d5246 | 341 | cmd=cmd->child; |
| murilopontes | 0:78b46c0d5246 | 342 | } |
| murilopontes | 0:78b46c0d5246 | 343 | else if(ret==AMBIG) |
| murilopontes | 0:78b46c0d5246 | 344 | { |
| murilopontes | 0:78b46c0d5246 | 345 | puts("\r\nambiguity: "); |
| murilopontes | 0:78b46c0d5246 | 346 | puts(str); |
| murilopontes | 0:78b46c0d5246 | 347 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 348 | return 0; |
| murilopontes | 0:78b46c0d5246 | 349 | } |
| murilopontes | 0:78b46c0d5246 | 350 | else if(ret==UNMATCH) |
| murilopontes | 0:78b46c0d5246 | 351 | { |
| murilopontes | 0:78b46c0d5246 | 352 | puts("\r\nno match: "); |
| murilopontes | 0:78b46c0d5246 | 353 | puts(str); |
| murilopontes | 0:78b46c0d5246 | 354 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 355 | return 0; |
| murilopontes | 0:78b46c0d5246 | 356 | } |
| murilopontes | 0:78b46c0d5246 | 357 | else /* NULLMATCH */ |
| murilopontes | 0:78b46c0d5246 | 358 | { |
| murilopontes | 0:78b46c0d5246 | 359 | if(cur_cmd_ctx) |
| murilopontes | 0:78b46c0d5246 | 360 | display_child_help(cur_cmd_ctx->child); |
| murilopontes | 0:78b46c0d5246 | 361 | else |
| murilopontes | 0:78b46c0d5246 | 362 | display_child_help(root_cmd); |
| murilopontes | 0:78b46c0d5246 | 363 | return 0; |
| murilopontes | 0:78b46c0d5246 | 364 | } |
| murilopontes | 0:78b46c0d5246 | 365 | } |
| murilopontes | 0:78b46c0d5246 | 366 | } |
| murilopontes | 0:78b46c0d5246 | 367 | |
| murilopontes | 0:78b46c0d5246 | 368 | /* try to complete current command line |
| murilopontes | 0:78b46c0d5246 | 369 | */ |
| murilopontes | 0:78b46c0d5246 | 370 | static int complete_command_line(tinysh_cmd_t *cmd, uchar *_str) |
| murilopontes | 0:78b46c0d5246 | 371 | { |
| murilopontes | 0:78b46c0d5246 | 372 | uchar *str=_str; |
| murilopontes | 0:78b46c0d5246 | 373 | |
| murilopontes | 0:78b46c0d5246 | 374 | while(1) |
| murilopontes | 0:78b46c0d5246 | 375 | { |
| murilopontes | 0:78b46c0d5246 | 376 | int ret; |
| murilopontes | 0:78b46c0d5246 | 377 | int common_len=BUFFER_SIZE; |
| murilopontes | 0:78b46c0d5246 | 378 | int _str_len; |
| murilopontes | 0:78b46c0d5246 | 379 | int i; |
| murilopontes | 0:78b46c0d5246 | 380 | uchar *__str=str; |
| murilopontes | 0:78b46c0d5246 | 381 | |
| murilopontes | 0:78b46c0d5246 | 382 | tinysh_cmd_t *_cmd=cmd; |
| murilopontes | 0:78b46c0d5246 | 383 | ret=parse_command(&cmd,&str); |
| murilopontes | 0:78b46c0d5246 | 384 | for(_str_len=0;__str[_str_len]&&__str[_str_len]!=' ';_str_len++); |
| murilopontes | 0:78b46c0d5246 | 385 | if(ret==MATCH && *str) |
| murilopontes | 0:78b46c0d5246 | 386 | { |
| murilopontes | 0:78b46c0d5246 | 387 | cmd=cmd->child; |
| murilopontes | 0:78b46c0d5246 | 388 | } |
| murilopontes | 0:78b46c0d5246 | 389 | else if(ret==AMBIG || ret==MATCH || ret==NULLMATCH) |
| murilopontes | 0:78b46c0d5246 | 390 | { |
| murilopontes | 0:78b46c0d5246 | 391 | tinysh_cmd_t *cm; |
| murilopontes | 0:78b46c0d5246 | 392 | tinysh_cmd_t *matched_cmd=0; |
| murilopontes | 0:78b46c0d5246 | 393 | int nb_match=0; |
| murilopontes | 0:78b46c0d5246 | 394 | |
| murilopontes | 0:78b46c0d5246 | 395 | for(cm=cmd;cm;cm=cm->next) |
| murilopontes | 0:78b46c0d5246 | 396 | { |
| murilopontes | 0:78b46c0d5246 | 397 | int r=strstart(cm->name,__str); |
| murilopontes | 0:78b46c0d5246 | 398 | if(r==FULLMATCH) |
| murilopontes | 0:78b46c0d5246 | 399 | { |
| murilopontes | 0:78b46c0d5246 | 400 | for(i=_str_len;cmd->name[i];i++) |
| murilopontes | 0:78b46c0d5246 | 401 | tinysh_char_in(cmd->name[i]); |
| murilopontes | 0:78b46c0d5246 | 402 | if(*(str-1)!=' ') |
| murilopontes | 0:78b46c0d5246 | 403 | tinysh_char_in(' '); |
| murilopontes | 0:78b46c0d5246 | 404 | if(!cmd->child) |
| murilopontes | 0:78b46c0d5246 | 405 | { |
| murilopontes | 0:78b46c0d5246 | 406 | if(cmd->usage) |
| murilopontes | 0:78b46c0d5246 | 407 | { |
| murilopontes | 0:78b46c0d5246 | 408 | puts(cmd->usage); |
| murilopontes | 0:78b46c0d5246 | 409 | putchar('\n'); |
| murilopontes | 0:78b46c0d5246 | 410 | return 1; |
| murilopontes | 0:78b46c0d5246 | 411 | } |
| murilopontes | 0:78b46c0d5246 | 412 | else |
| murilopontes | 0:78b46c0d5246 | 413 | return 0; |
| murilopontes | 0:78b46c0d5246 | 414 | } |
| murilopontes | 0:78b46c0d5246 | 415 | else |
| murilopontes | 0:78b46c0d5246 | 416 | { |
| murilopontes | 0:78b46c0d5246 | 417 | cmd=cmd->child; |
| murilopontes | 0:78b46c0d5246 | 418 | break; |
| murilopontes | 0:78b46c0d5246 | 419 | } |
| murilopontes | 0:78b46c0d5246 | 420 | } |
| murilopontes | 0:78b46c0d5246 | 421 | else if(r==PARTMATCH) |
| murilopontes | 0:78b46c0d5246 | 422 | { |
| murilopontes | 0:78b46c0d5246 | 423 | nb_match++; |
| murilopontes | 0:78b46c0d5246 | 424 | if(!matched_cmd) |
| murilopontes | 0:78b46c0d5246 | 425 | { |
| murilopontes | 0:78b46c0d5246 | 426 | matched_cmd=cm; |
| murilopontes | 0:78b46c0d5246 | 427 | common_len=strlen(cm->name); |
| murilopontes | 0:78b46c0d5246 | 428 | } |
| murilopontes | 0:78b46c0d5246 | 429 | else |
| murilopontes | 0:78b46c0d5246 | 430 | { |
| murilopontes | 0:78b46c0d5246 | 431 | for(i=_str_len;cm->name[i] && i<common_len && |
| murilopontes | 0:78b46c0d5246 | 432 | cm->name[i]==matched_cmd->name[i];i++); |
| murilopontes | 0:78b46c0d5246 | 433 | if(i<common_len) |
| murilopontes | 0:78b46c0d5246 | 434 | common_len=i; |
| murilopontes | 0:78b46c0d5246 | 435 | } |
| murilopontes | 0:78b46c0d5246 | 436 | } |
| murilopontes | 0:78b46c0d5246 | 437 | } |
| murilopontes | 0:78b46c0d5246 | 438 | if(cm) |
| murilopontes | 0:78b46c0d5246 | 439 | continue; |
| murilopontes | 0:78b46c0d5246 | 440 | if(matched_cmd) |
| murilopontes | 0:78b46c0d5246 | 441 | { |
| murilopontes | 0:78b46c0d5246 | 442 | if(_str_len==common_len) |
| murilopontes | 0:78b46c0d5246 | 443 | { |
| murilopontes | 1:71580bf962fe | 444 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 445 | for(cm=cmd;cm;cm=cm->next) |
| murilopontes | 0:78b46c0d5246 | 446 | { |
| murilopontes | 0:78b46c0d5246 | 447 | int r=strstart(cm->name,__str); |
| murilopontes | 0:78b46c0d5246 | 448 | if(r==FULLMATCH || r==PARTMATCH) |
| murilopontes | 0:78b46c0d5246 | 449 | { |
| murilopontes | 0:78b46c0d5246 | 450 | puts(cm->name); |
| murilopontes | 1:71580bf962fe | 451 | puts("\r\n"); |
| murilopontes | 0:78b46c0d5246 | 452 | } |
| murilopontes | 0:78b46c0d5246 | 453 | } |
| murilopontes | 0:78b46c0d5246 | 454 | return 1; |
| murilopontes | 0:78b46c0d5246 | 455 | } |
| murilopontes | 0:78b46c0d5246 | 456 | else |
| murilopontes | 0:78b46c0d5246 | 457 | { |
| murilopontes | 0:78b46c0d5246 | 458 | for(i=_str_len;i<common_len;i++) |
| murilopontes | 0:78b46c0d5246 | 459 | tinysh_char_in(matched_cmd->name[i]); |
| murilopontes | 0:78b46c0d5246 | 460 | if(nb_match==1) |
| murilopontes | 0:78b46c0d5246 | 461 | tinysh_char_in(' '); |
| murilopontes | 0:78b46c0d5246 | 462 | } |
| murilopontes | 0:78b46c0d5246 | 463 | } |
| murilopontes | 0:78b46c0d5246 | 464 | return 0; |
| murilopontes | 0:78b46c0d5246 | 465 | } |
| murilopontes | 0:78b46c0d5246 | 466 | else /* UNMATCH */ |
| murilopontes | 0:78b46c0d5246 | 467 | { |
| murilopontes | 0:78b46c0d5246 | 468 | return 0; |
| murilopontes | 0:78b46c0d5246 | 469 | } |
| murilopontes | 0:78b46c0d5246 | 470 | } |
| murilopontes | 0:78b46c0d5246 | 471 | } |
| murilopontes | 0:78b46c0d5246 | 472 | |
| murilopontes | 0:78b46c0d5246 | 473 | /* start a new line |
| murilopontes | 0:78b46c0d5246 | 474 | */ |
| murilopontes | 0:78b46c0d5246 | 475 | static void start_of_line() |
| murilopontes | 0:78b46c0d5246 | 476 | { |
| murilopontes | 0:78b46c0d5246 | 477 | /* display start of new line */ |
| murilopontes | 0:78b46c0d5246 | 478 | puts(prompt); |
| murilopontes | 0:78b46c0d5246 | 479 | if(cur_context) |
| murilopontes | 0:78b46c0d5246 | 480 | { |
| murilopontes | 0:78b46c0d5246 | 481 | puts(context_buffer); |
| murilopontes | 0:78b46c0d5246 | 482 | puts("> "); |
| murilopontes | 0:78b46c0d5246 | 483 | } |
| murilopontes | 0:78b46c0d5246 | 484 | cur_index=0; |
| murilopontes | 0:78b46c0d5246 | 485 | } |
| murilopontes | 0:78b46c0d5246 | 486 | |
| murilopontes | 0:78b46c0d5246 | 487 | /* character input |
| murilopontes | 0:78b46c0d5246 | 488 | */ |
| murilopontes | 0:78b46c0d5246 | 489 | static void _tinysh_char_in(uchar c) |
| murilopontes | 0:78b46c0d5246 | 490 | { |
| murilopontes | 0:78b46c0d5246 | 491 | uchar *line=input_buffers[cur_buf_index]; |
| murilopontes | 0:78b46c0d5246 | 492 | |
| murilopontes | 0:78b46c0d5246 | 493 | if(c=='\n' || c=='\r') /* validate command */ |
| murilopontes | 0:78b46c0d5246 | 494 | { |
| murilopontes | 0:78b46c0d5246 | 495 | tinysh_cmd_t *cmd; |
| murilopontes | 0:78b46c0d5246 | 496 | int context=0; |
| murilopontes | 0:78b46c0d5246 | 497 | |
| murilopontes | 0:78b46c0d5246 | 498 | /* first, echo the newline */ |
| murilopontes | 0:78b46c0d5246 | 499 | if(echo) |
| murilopontes | 0:78b46c0d5246 | 500 | putchar(c); |
| murilopontes | 0:78b46c0d5246 | 501 | |
| murilopontes | 0:78b46c0d5246 | 502 | while(*line && *line==' ') line++; |
| murilopontes | 0:78b46c0d5246 | 503 | if(*line) /* not empty line */ |
| murilopontes | 0:78b46c0d5246 | 504 | { |
| murilopontes | 0:78b46c0d5246 | 505 | cmd=cur_cmd_ctx?cur_cmd_ctx->child:root_cmd; |
| murilopontes | 0:78b46c0d5246 | 506 | exec_command_line(cmd,line); |
| murilopontes | 0:78b46c0d5246 | 507 | cur_buf_index=(cur_buf_index+1)%HISTORY_DEPTH; |
| murilopontes | 0:78b46c0d5246 | 508 | cur_index=0; |
| murilopontes | 0:78b46c0d5246 | 509 | input_buffers[cur_buf_index][0]=0; |
| murilopontes | 0:78b46c0d5246 | 510 | } |
| murilopontes | 0:78b46c0d5246 | 511 | start_of_line(); |
| murilopontes | 0:78b46c0d5246 | 512 | } |
| murilopontes | 0:78b46c0d5246 | 513 | else if(c==TOPCHAR) /* return to top level */ |
| murilopontes | 0:78b46c0d5246 | 514 | { |
| murilopontes | 0:78b46c0d5246 | 515 | if(echo) |
| murilopontes | 0:78b46c0d5246 | 516 | putchar(c); |
| murilopontes | 0:78b46c0d5246 | 517 | |
| murilopontes | 0:78b46c0d5246 | 518 | cur_context=0; |
| murilopontes | 0:78b46c0d5246 | 519 | cur_cmd_ctx=0; |
| murilopontes | 0:78b46c0d5246 | 520 | } |
| murilopontes | 0:78b46c0d5246 | 521 | else if(c==8 || c==127) /* backspace */ |
| murilopontes | 0:78b46c0d5246 | 522 | { |
| murilopontes | 0:78b46c0d5246 | 523 | if(cur_index>0) |
| murilopontes | 0:78b46c0d5246 | 524 | { |
| murilopontes | 0:78b46c0d5246 | 525 | puts("\b \b"); |
| murilopontes | 0:78b46c0d5246 | 526 | cur_index--; |
| murilopontes | 0:78b46c0d5246 | 527 | line[cur_index]=0; |
| murilopontes | 0:78b46c0d5246 | 528 | } |
| murilopontes | 0:78b46c0d5246 | 529 | } |
| murilopontes | 0:78b46c0d5246 | 530 | else if(c==16) /* CTRL-P: back in history */ |
| murilopontes | 0:78b46c0d5246 | 531 | { |
| murilopontes | 0:78b46c0d5246 | 532 | int prevline=(cur_buf_index+HISTORY_DEPTH-1)%HISTORY_DEPTH; |
| murilopontes | 0:78b46c0d5246 | 533 | |
| murilopontes | 0:78b46c0d5246 | 534 | if(input_buffers[prevline][0]) |
| murilopontes | 0:78b46c0d5246 | 535 | { |
| murilopontes | 0:78b46c0d5246 | 536 | line=input_buffers[prevline]; |
| murilopontes | 0:78b46c0d5246 | 537 | /* fill the rest of the line with spaces */ |
| murilopontes | 0:78b46c0d5246 | 538 | while(cur_index-->strlen(line)) |
| murilopontes | 0:78b46c0d5246 | 539 | puts("\b \b"); |
| murilopontes | 0:78b46c0d5246 | 540 | putchar('\r'); |
| murilopontes | 0:78b46c0d5246 | 541 | start_of_line(); |
| murilopontes | 0:78b46c0d5246 | 542 | puts(line); |
| murilopontes | 0:78b46c0d5246 | 543 | cur_index=strlen(line); |
| murilopontes | 0:78b46c0d5246 | 544 | cur_buf_index=prevline; |
| murilopontes | 0:78b46c0d5246 | 545 | } |
| murilopontes | 0:78b46c0d5246 | 546 | } |
| murilopontes | 0:78b46c0d5246 | 547 | else if(c==14) /* CTRL-N: next in history */ |
| murilopontes | 0:78b46c0d5246 | 548 | { |
| murilopontes | 0:78b46c0d5246 | 549 | int nextline=(cur_buf_index+1)%HISTORY_DEPTH; |
| murilopontes | 0:78b46c0d5246 | 550 | |
| murilopontes | 0:78b46c0d5246 | 551 | if(input_buffers[nextline][0]) |
| murilopontes | 0:78b46c0d5246 | 552 | { |
| murilopontes | 0:78b46c0d5246 | 553 | line=input_buffers[nextline]; |
| murilopontes | 0:78b46c0d5246 | 554 | /* fill the rest of the line with spaces */ |
| murilopontes | 0:78b46c0d5246 | 555 | while(cur_index-->strlen(line)) |
| murilopontes | 0:78b46c0d5246 | 556 | puts("\b \b"); |
| murilopontes | 0:78b46c0d5246 | 557 | putchar('\r'); |
| murilopontes | 0:78b46c0d5246 | 558 | start_of_line(); |
| murilopontes | 0:78b46c0d5246 | 559 | puts(line); |
| murilopontes | 0:78b46c0d5246 | 560 | cur_index=strlen(line); |
| murilopontes | 0:78b46c0d5246 | 561 | cur_buf_index=nextline; |
| murilopontes | 0:78b46c0d5246 | 562 | } |
| murilopontes | 0:78b46c0d5246 | 563 | } |
| murilopontes | 0:78b46c0d5246 | 564 | else if(c=='?') /* display help */ |
| murilopontes | 0:78b46c0d5246 | 565 | { |
| murilopontes | 0:78b46c0d5246 | 566 | tinysh_cmd_t *cmd; |
| murilopontes | 0:78b46c0d5246 | 567 | cmd=cur_cmd_ctx?cur_cmd_ctx->child:root_cmd; |
| murilopontes | 0:78b46c0d5246 | 568 | help_command_line(cmd,line); |
| murilopontes | 0:78b46c0d5246 | 569 | start_of_line(); |
| murilopontes | 0:78b46c0d5246 | 570 | puts(line); |
| murilopontes | 0:78b46c0d5246 | 571 | cur_index=strlen(line); |
| murilopontes | 0:78b46c0d5246 | 572 | } |
| murilopontes | 0:78b46c0d5246 | 573 | else if(c==9 || c=='!') /* TAB: autocompletion */ |
| murilopontes | 0:78b46c0d5246 | 574 | { |
| murilopontes | 0:78b46c0d5246 | 575 | tinysh_cmd_t *cmd; |
| murilopontes | 0:78b46c0d5246 | 576 | cmd=cur_cmd_ctx?cur_cmd_ctx->child:root_cmd; |
| murilopontes | 0:78b46c0d5246 | 577 | if(complete_command_line(cmd,line)) |
| murilopontes | 0:78b46c0d5246 | 578 | { |
| murilopontes | 0:78b46c0d5246 | 579 | start_of_line(); |
| murilopontes | 0:78b46c0d5246 | 580 | puts(line); |
| murilopontes | 0:78b46c0d5246 | 581 | } |
| murilopontes | 0:78b46c0d5246 | 582 | cur_index=strlen(line); |
| murilopontes | 0:78b46c0d5246 | 583 | } |
| murilopontes | 0:78b46c0d5246 | 584 | else /* any input character */ |
| murilopontes | 0:78b46c0d5246 | 585 | { |
| murilopontes | 0:78b46c0d5246 | 586 | if(cur_index<BUFFER_SIZE) |
| murilopontes | 0:78b46c0d5246 | 587 | { |
| murilopontes | 0:78b46c0d5246 | 588 | if(echo) |
| murilopontes | 0:78b46c0d5246 | 589 | putchar(c); |
| murilopontes | 0:78b46c0d5246 | 590 | line[cur_index++]=c; |
| murilopontes | 0:78b46c0d5246 | 591 | line[cur_index]=0; |
| murilopontes | 0:78b46c0d5246 | 592 | } |
| murilopontes | 0:78b46c0d5246 | 593 | } |
| murilopontes | 0:78b46c0d5246 | 594 | } |
| murilopontes | 0:78b46c0d5246 | 595 | |
| murilopontes | 0:78b46c0d5246 | 596 | /* new character input */ |
| murilopontes | 0:78b46c0d5246 | 597 | void tinysh_char_in(uchar c) |
| murilopontes | 0:78b46c0d5246 | 598 | { |
| murilopontes | 0:78b46c0d5246 | 599 | /* |
| murilopontes | 0:78b46c0d5246 | 600 | * filter characters here |
| murilopontes | 0:78b46c0d5246 | 601 | */ |
| murilopontes | 0:78b46c0d5246 | 602 | _tinysh_char_in(c); |
| murilopontes | 0:78b46c0d5246 | 603 | } |
| murilopontes | 0:78b46c0d5246 | 604 | |
| murilopontes | 0:78b46c0d5246 | 605 | /* add a new command */ |
| murilopontes | 0:78b46c0d5246 | 606 | void tinysh_add_command(tinysh_cmd_t *cmd) |
| murilopontes | 0:78b46c0d5246 | 607 | { |
| murilopontes | 0:78b46c0d5246 | 608 | tinysh_cmd_t *cm; |
| murilopontes | 0:78b46c0d5246 | 609 | |
| murilopontes | 0:78b46c0d5246 | 610 | if(cmd->parent) |
| murilopontes | 0:78b46c0d5246 | 611 | { |
| murilopontes | 0:78b46c0d5246 | 612 | cm=cmd->parent->child; |
| murilopontes | 0:78b46c0d5246 | 613 | if(!cm) |
| murilopontes | 0:78b46c0d5246 | 614 | { |
| murilopontes | 0:78b46c0d5246 | 615 | cmd->parent->child=cmd; |
| murilopontes | 0:78b46c0d5246 | 616 | } |
| murilopontes | 0:78b46c0d5246 | 617 | else |
| murilopontes | 0:78b46c0d5246 | 618 | { |
| murilopontes | 0:78b46c0d5246 | 619 | while(cm->next) cm=cm->next; |
| murilopontes | 0:78b46c0d5246 | 620 | cm->next=cmd; |
| murilopontes | 0:78b46c0d5246 | 621 | } |
| murilopontes | 0:78b46c0d5246 | 622 | } |
| murilopontes | 0:78b46c0d5246 | 623 | else if(!root_cmd) |
| murilopontes | 0:78b46c0d5246 | 624 | { |
| murilopontes | 0:78b46c0d5246 | 625 | root_cmd=cmd; |
| murilopontes | 0:78b46c0d5246 | 626 | } |
| murilopontes | 0:78b46c0d5246 | 627 | else |
| murilopontes | 0:78b46c0d5246 | 628 | { |
| murilopontes | 0:78b46c0d5246 | 629 | cm=root_cmd; |
| murilopontes | 0:78b46c0d5246 | 630 | while(cm->next) cm=cm->next; |
| murilopontes | 0:78b46c0d5246 | 631 | cm->next=cmd; |
| murilopontes | 0:78b46c0d5246 | 632 | } |
| murilopontes | 0:78b46c0d5246 | 633 | } |
| murilopontes | 0:78b46c0d5246 | 634 | |
| murilopontes | 0:78b46c0d5246 | 635 | /* modify shell prompt |
| murilopontes | 0:78b46c0d5246 | 636 | */ |
| murilopontes | 0:78b46c0d5246 | 637 | void tinysh_set_prompt(char *str) |
| murilopontes | 0:78b46c0d5246 | 638 | { |
| murilopontes | 0:78b46c0d5246 | 639 | int i; |
| murilopontes | 0:78b46c0d5246 | 640 | for(i=0;str[i] && i<PROMPT_SIZE;i++) |
| murilopontes | 0:78b46c0d5246 | 641 | prompt[i]=str[i]; |
| murilopontes | 0:78b46c0d5246 | 642 | prompt[i]=0; |
| murilopontes | 0:78b46c0d5246 | 643 | /* force prompt display by generating empty command */ |
| murilopontes | 0:78b46c0d5246 | 644 | tinysh_char_in('\r'); |
| murilopontes | 0:78b46c0d5246 | 645 | } |
| murilopontes | 0:78b46c0d5246 | 646 | |
| murilopontes | 0:78b46c0d5246 | 647 | /* return current command argument |
| murilopontes | 0:78b46c0d5246 | 648 | */ |
| murilopontes | 0:78b46c0d5246 | 649 | void *tinysh_get_arg() |
| murilopontes | 0:78b46c0d5246 | 650 | { |
| murilopontes | 0:78b46c0d5246 | 651 | return tinysh_arg; |
| murilopontes | 0:78b46c0d5246 | 652 | } |
| murilopontes | 0:78b46c0d5246 | 653 | |
| murilopontes | 0:78b46c0d5246 | 654 | /* string to decimal/hexadecimal conversion |
| murilopontes | 0:78b46c0d5246 | 655 | */ |
| murilopontes | 0:78b46c0d5246 | 656 | unsigned long tinysh_atoxi(char *s) |
| murilopontes | 0:78b46c0d5246 | 657 | { |
| murilopontes | 0:78b46c0d5246 | 658 | int ishex=0; |
| murilopontes | 0:78b46c0d5246 | 659 | unsigned long res=0; |
| murilopontes | 0:78b46c0d5246 | 660 | |
| murilopontes | 0:78b46c0d5246 | 661 | if(*s==0) return 0; |
| murilopontes | 0:78b46c0d5246 | 662 | |
| murilopontes | 0:78b46c0d5246 | 663 | if(*s=='0' && *(s+1)=='x') |
| murilopontes | 0:78b46c0d5246 | 664 | { |
| murilopontes | 0:78b46c0d5246 | 665 | ishex=1; |
| murilopontes | 0:78b46c0d5246 | 666 | s+=2; |
| murilopontes | 0:78b46c0d5246 | 667 | } |
| murilopontes | 0:78b46c0d5246 | 668 | |
| murilopontes | 0:78b46c0d5246 | 669 | while(*s) |
| murilopontes | 0:78b46c0d5246 | 670 | { |
| murilopontes | 0:78b46c0d5246 | 671 | if(ishex) |
| murilopontes | 0:78b46c0d5246 | 672 | res*=16; |
| murilopontes | 0:78b46c0d5246 | 673 | else |
| murilopontes | 0:78b46c0d5246 | 674 | res*=10; |
| murilopontes | 0:78b46c0d5246 | 675 | |
| murilopontes | 0:78b46c0d5246 | 676 | if(*s>='0' && *s<='9') |
| murilopontes | 0:78b46c0d5246 | 677 | res+=*s-'0'; |
| murilopontes | 0:78b46c0d5246 | 678 | else if(ishex && *s>='a' && *s<='f') |
| murilopontes | 0:78b46c0d5246 | 679 | res+=*s+10-'a'; |
| murilopontes | 0:78b46c0d5246 | 680 | else if(ishex && *s>='A' && *s<='F') |
| murilopontes | 0:78b46c0d5246 | 681 | res+=*s+10-'A'; |
| murilopontes | 0:78b46c0d5246 | 682 | else |
| murilopontes | 0:78b46c0d5246 | 683 | break; |
| murilopontes | 0:78b46c0d5246 | 684 | |
| murilopontes | 0:78b46c0d5246 | 685 | s++; |
| murilopontes | 0:78b46c0d5246 | 686 | } |
| murilopontes | 0:78b46c0d5246 | 687 | |
| murilopontes | 0:78b46c0d5246 | 688 | return res; |
| murilopontes | 0:78b46c0d5246 | 689 | } |
| murilopontes | 0:78b46c0d5246 | 690 |