Simple embedded shell with runtime pluggable commands.
Implements a simple unix-like shell for embedded systems with a pluggable command architecture.
SimpleShell.cpp@35:1a8c5fce8895, 2018-12-31 (annotated)
- Committer:
- shimniok
- Date:
- Mon Dec 31 23:34:17 2018 +0000
- Revision:
- 35:1a8c5fce8895
- Parent:
- 34:afe994ca0e49
trying wildcards still.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
shimniok | 21:5d7ac1f0b842 | 1 | #include "SimpleShell.h" |
shimniok | 35:1a8c5fce8895 | 2 | #include "ff.h" |
shimniok | 21:5d7ac1f0b842 | 3 | #include <ctype.h> |
shimniok | 21:5d7ac1f0b842 | 4 | #include <string> |
shimniok | 28:753db82debb1 | 5 | #include <list> |
shimniok | 21:5d7ac1f0b842 | 6 | |
shimniok | 21:5d7ac1f0b842 | 7 | #define ESC 0x1b |
shimniok | 21:5d7ac1f0b842 | 8 | #define UP 0x41 |
shimniok | 21:5d7ac1f0b842 | 9 | #define DOWN 0x42 |
shimniok | 21:5d7ac1f0b842 | 10 | #define RIGHT 0x43 |
shimniok | 21:5d7ac1f0b842 | 11 | #define LEFT 0x44 |
shimniok | 21:5d7ac1f0b842 | 12 | #define HOME 0x31 |
shimniok | 21:5d7ac1f0b842 | 13 | #define INS 0x32 |
shimniok | 21:5d7ac1f0b842 | 14 | #define DEL 0x33 |
shimniok | 21:5d7ac1f0b842 | 15 | #define PGUP 0x35 |
shimniok | 21:5d7ac1f0b842 | 16 | #define PGDN 0x36 |
shimniok | 21:5d7ac1f0b842 | 17 | #define TAIL 0x7e |
shimniok | 21:5d7ac1f0b842 | 18 | |
shimniok | 21:5d7ac1f0b842 | 19 | |
shimniok | 29:8d4132274445 | 20 | SimpleShell::SimpleShell(char *home) |
shimniok | 28:753db82debb1 | 21 | { |
shimniok | 28:753db82debb1 | 22 | lookupEnd = 0; |
shimniok | 28:753db82debb1 | 23 | |
shimniok | 29:8d4132274445 | 24 | // Set home directory |
shimniok | 29:8d4132274445 | 25 | strncpy(_home, canon(home), MAXBUF); |
shimniok | 29:8d4132274445 | 26 | |
shimniok | 29:8d4132274445 | 27 | // Set current working directory |
shimniok | 29:8d4132274445 | 28 | strncpy(_cwd, _home, MAXBUF); |
shimniok | 29:8d4132274445 | 29 | |
shimniok | 28:753db82debb1 | 30 | // Built-in shell commands |
shimniok | 28:753db82debb1 | 31 | command(callback(this, &SimpleShell::help), "help"); |
shimniok | 28:753db82debb1 | 32 | command(callback(this, &SimpleShell::pwd), "pwd"); |
shimniok | 28:753db82debb1 | 33 | command(callback(this, &SimpleShell::cat), "cat"); |
shimniok | 28:753db82debb1 | 34 | command(callback(this, &SimpleShell::cd), "cd"); |
shimniok | 28:753db82debb1 | 35 | command(callback(this, &SimpleShell::rm), "rm"); |
shimniok | 28:753db82debb1 | 36 | command(callback(this, &SimpleShell::touch), "touch"); |
shimniok | 28:753db82debb1 | 37 | command(callback(this, &SimpleShell::ls), "ls"); |
shimniok | 28:753db82debb1 | 38 | command(callback(this, &SimpleShell::send), "send"); |
shimniok | 28:753db82debb1 | 39 | } |
shimniok | 28:753db82debb1 | 40 | |
shimniok | 28:753db82debb1 | 41 | |
shimniok | 31:27e8130a0d8f | 42 | bool SimpleShell::haswildcard(char *s) { |
shimniok | 35:1a8c5fce8895 | 43 | bool result = strchr(s, '*') != NULL; |
shimniok | 31:27e8130a0d8f | 44 | return result; |
shimniok | 31:27e8130a0d8f | 45 | } |
shimniok | 31:27e8130a0d8f | 46 | |
shimniok | 31:27e8130a0d8f | 47 | |
shimniok | 28:753db82debb1 | 48 | /// Path stack representation |
shimniok | 28:753db82debb1 | 49 | typedef std::list<char*> path_t; |
shimniok | 28:753db82debb1 | 50 | |
shimniok | 21:5d7ac1f0b842 | 51 | char *SimpleShell::canon(char *path) { |
shimniok | 28:753db82debb1 | 52 | path_t pstack; |
shimniok | 28:753db82debb1 | 53 | static char tmp[MAXBUF*2]; |
shimniok | 28:753db82debb1 | 54 | char *e; |
shimniok | 21:5d7ac1f0b842 | 55 | |
shimniok | 28:753db82debb1 | 56 | // if we're passed empty/null string, just send back cwd so nothing breaks |
shimniok | 28:753db82debb1 | 57 | if (path == NULL || strlen(path) == 0) { |
shimniok | 28:753db82debb1 | 58 | strcpy(tmp, _cwd); |
shimniok | 28:753db82debb1 | 59 | return tmp; |
shimniok | 28:753db82debb1 | 60 | } |
shimniok | 28:753db82debb1 | 61 | |
shimniok | 28:753db82debb1 | 62 | // relative path? add current working directory to path stack |
shimniok | 21:5d7ac1f0b842 | 63 | if (path[0] != '/') { |
shimniok | 28:753db82debb1 | 64 | strcpy(tmp, _cwd); |
shimniok | 28:753db82debb1 | 65 | strcat(tmp, "/"); |
shimniok | 28:753db82debb1 | 66 | strcat(tmp, path); |
shimniok | 28:753db82debb1 | 67 | } else { |
shimniok | 28:753db82debb1 | 68 | strcpy(tmp, path); |
shimniok | 21:5d7ac1f0b842 | 69 | } |
shimniok | 28:753db82debb1 | 70 | |
shimniok | 28:753db82debb1 | 71 | // now canonicalize the path spec |
shimniok | 28:753db82debb1 | 72 | e = strtok(tmp+1, "/"); |
shimniok | 28:753db82debb1 | 73 | while (e) { |
shimniok | 28:753db82debb1 | 74 | //printf("e = <%s>\n", e); |
shimniok | 28:753db82debb1 | 75 | if (strcmp("..", e) == 0) { |
shimniok | 28:753db82debb1 | 76 | // pop most recent directory |
shimniok | 28:753db82debb1 | 77 | if (!pstack.empty()) |
shimniok | 28:753db82debb1 | 78 | pstack.pop_back(); |
shimniok | 28:753db82debb1 | 79 | } else if (strcmp(".", e) != 0) { |
shimniok | 28:753db82debb1 | 80 | // push this dir onto path |
shimniok | 28:753db82debb1 | 81 | if (strlen(e) > 0) |
shimniok | 28:753db82debb1 | 82 | pstack.push_back(e); |
shimniok | 28:753db82debb1 | 83 | } |
shimniok | 28:753db82debb1 | 84 | e = strtok(NULL, "/"); |
shimniok | 28:753db82debb1 | 85 | } |
shimniok | 21:5d7ac1f0b842 | 86 | |
shimniok | 28:753db82debb1 | 87 | static std::string result; |
shimniok | 28:753db82debb1 | 88 | result = ""; |
shimniok | 28:753db82debb1 | 89 | |
shimniok | 28:753db82debb1 | 90 | for (path_t::iterator it = pstack.begin(); it != pstack.end(); it++) { |
shimniok | 28:753db82debb1 | 91 | result.append("/"); |
shimniok | 28:753db82debb1 | 92 | result.append(*it); |
shimniok | 28:753db82debb1 | 93 | } |
shimniok | 28:753db82debb1 | 94 | |
shimniok | 28:753db82debb1 | 95 | // if empty, add a / |
shimniok | 28:753db82debb1 | 96 | if (result.size() < 2) { |
shimniok | 28:753db82debb1 | 97 | result.append("/"); |
shimniok | 28:753db82debb1 | 98 | } |
shimniok | 28:753db82debb1 | 99 | |
shimniok | 28:753db82debb1 | 100 | strcpy(tmp, result.c_str()); |
shimniok | 28:753db82debb1 | 101 | |
shimniok | 28:753db82debb1 | 102 | return tmp; |
shimniok | 21:5d7ac1f0b842 | 103 | } |
shimniok | 21:5d7ac1f0b842 | 104 | |
shimniok | 21:5d7ac1f0b842 | 105 | |
shimniok | 23:b1e49cfcaef6 | 106 | char *SimpleShell::basename(char *path) { |
shimniok | 33:84dc443909a0 | 107 | char *result = strrchr(path, '/'); |
shimniok | 24:004e33abce37 | 108 | |
shimniok | 33:84dc443909a0 | 109 | if (result == NULL) { |
shimniok | 33:84dc443909a0 | 110 | result = path; |
shimniok | 33:84dc443909a0 | 111 | } else { |
shimniok | 33:84dc443909a0 | 112 | if (result[0] == '/') result++; |
shimniok | 24:004e33abce37 | 113 | } |
shimniok | 24:004e33abce37 | 114 | |
shimniok | 24:004e33abce37 | 115 | return result; |
shimniok | 23:b1e49cfcaef6 | 116 | } |
shimniok | 23:b1e49cfcaef6 | 117 | |
shimniok | 23:b1e49cfcaef6 | 118 | |
shimniok | 21:5d7ac1f0b842 | 119 | void SimpleShell::help(int argc, char **argv) |
shimniok | 21:5d7ac1f0b842 | 120 | { |
shimniok | 21:5d7ac1f0b842 | 121 | printf("Available commands: "); |
shimniok | 21:5d7ac1f0b842 | 122 | for (int i=0; i < lookupEnd; i++) { |
shimniok | 21:5d7ac1f0b842 | 123 | printf("%s ", lookup[i].command); |
shimniok | 21:5d7ac1f0b842 | 124 | } |
shimniok | 21:5d7ac1f0b842 | 125 | printf("\n\n"); |
shimniok | 21:5d7ac1f0b842 | 126 | } |
shimniok | 21:5d7ac1f0b842 | 127 | |
shimniok | 21:5d7ac1f0b842 | 128 | |
shimniok | 21:5d7ac1f0b842 | 129 | void SimpleShell::cd(int argc, char **argv) |
shimniok | 21:5d7ac1f0b842 | 130 | { |
shimniok | 29:8d4132274445 | 131 | if (argc == 1) { |
shimniok | 29:8d4132274445 | 132 | strncpy(_cwd, _home, MAXBUF); |
shimniok | 29:8d4132274445 | 133 | } else if (argc == 2) { |
shimniok | 28:753db82debb1 | 134 | strncpy(_cwd, canon(argv[1]), MAXBUF); |
shimniok | 21:5d7ac1f0b842 | 135 | } else { |
shimniok | 21:5d7ac1f0b842 | 136 | puts("usage: cd directory"); |
shimniok | 21:5d7ac1f0b842 | 137 | } |
shimniok | 21:5d7ac1f0b842 | 138 | return; |
shimniok | 21:5d7ac1f0b842 | 139 | } |
shimniok | 21:5d7ac1f0b842 | 140 | |
shimniok | 21:5d7ac1f0b842 | 141 | |
shimniok | 21:5d7ac1f0b842 | 142 | void SimpleShell::pwd(int argc, char **argv) |
shimniok | 21:5d7ac1f0b842 | 143 | { |
shimniok | 21:5d7ac1f0b842 | 144 | puts(_cwd); |
shimniok | 21:5d7ac1f0b842 | 145 | return; |
shimniok | 21:5d7ac1f0b842 | 146 | } |
shimniok | 21:5d7ac1f0b842 | 147 | |
shimniok | 21:5d7ac1f0b842 | 148 | |
shimniok | 21:5d7ac1f0b842 | 149 | void SimpleShell::ls(int argc, char **argv) |
shimniok | 21:5d7ac1f0b842 | 150 | { |
shimniok | 21:5d7ac1f0b842 | 151 | DIR *d; |
shimniok | 21:5d7ac1f0b842 | 152 | struct dirent *p; |
shimniok | 21:5d7ac1f0b842 | 153 | char *path; |
shimniok | 21:5d7ac1f0b842 | 154 | |
shimniok | 21:5d7ac1f0b842 | 155 | if (argc == 1) { |
shimniok | 21:5d7ac1f0b842 | 156 | path = _cwd; |
shimniok | 21:5d7ac1f0b842 | 157 | } else if (argc == 2) { |
shimniok | 28:753db82debb1 | 158 | path = canon(argv[1]); |
shimniok | 21:5d7ac1f0b842 | 159 | } else { |
shimniok | 21:5d7ac1f0b842 | 160 | puts("usage: ls [directory]"); |
shimniok | 21:5d7ac1f0b842 | 161 | return; |
shimniok | 21:5d7ac1f0b842 | 162 | } |
shimniok | 21:5d7ac1f0b842 | 163 | |
shimniok | 21:5d7ac1f0b842 | 164 | int cols=0; |
shimniok | 21:5d7ac1f0b842 | 165 | if ((d = opendir(path)) != NULL) { |
shimniok | 21:5d7ac1f0b842 | 166 | while ((p = readdir(d)) != NULL) { |
shimniok | 21:5d7ac1f0b842 | 167 | if (p->d_name && p->d_name[0] != 0xff) { |
shimniok | 21:5d7ac1f0b842 | 168 | if (cols++ > 3) { |
shimniok | 21:5d7ac1f0b842 | 169 | putc('\n', stdout); |
shimniok | 21:5d7ac1f0b842 | 170 | cols = 0; |
shimniok | 21:5d7ac1f0b842 | 171 | } |
shimniok | 21:5d7ac1f0b842 | 172 | printf("%-15s ", p->d_name); |
shimniok | 21:5d7ac1f0b842 | 173 | } |
shimniok | 21:5d7ac1f0b842 | 174 | } |
shimniok | 21:5d7ac1f0b842 | 175 | putc('\n', stdout); |
shimniok | 21:5d7ac1f0b842 | 176 | if (cols < 3) |
shimniok | 21:5d7ac1f0b842 | 177 | putc('\n', stdout); |
shimniok | 21:5d7ac1f0b842 | 178 | closedir(d); |
shimniok | 21:5d7ac1f0b842 | 179 | } else { |
shimniok | 21:5d7ac1f0b842 | 180 | puts(path); |
shimniok | 21:5d7ac1f0b842 | 181 | puts(": No such directory\n"); |
shimniok | 21:5d7ac1f0b842 | 182 | } |
shimniok | 21:5d7ac1f0b842 | 183 | |
shimniok | 21:5d7ac1f0b842 | 184 | return; |
shimniok | 21:5d7ac1f0b842 | 185 | } |
shimniok | 21:5d7ac1f0b842 | 186 | |
shimniok | 34:afe994ca0e49 | 187 | |
shimniok | 35:1a8c5fce8895 | 188 | char *SimpleShell::dirname(char *path) |
shimniok | 34:afe994ca0e49 | 189 | { |
shimniok | 34:afe994ca0e49 | 190 | char *found = strrchr(path, '/'); |
shimniok | 34:afe994ca0e49 | 191 | char *result = new char[sizeof(path)]; |
shimniok | 34:afe994ca0e49 | 192 | |
shimniok | 34:afe994ca0e49 | 193 | char *s = result; |
shimniok | 34:afe994ca0e49 | 194 | char *t = path; |
shimniok | 34:afe994ca0e49 | 195 | while (t < found) { |
shimniok | 34:afe994ca0e49 | 196 | *s++ = *t++; |
shimniok | 34:afe994ca0e49 | 197 | } |
shimniok | 34:afe994ca0e49 | 198 | *s = 0; |
shimniok | 34:afe994ca0e49 | 199 | |
shimniok | 34:afe994ca0e49 | 200 | return result; |
shimniok | 34:afe994ca0e49 | 201 | } |
shimniok | 34:afe994ca0e49 | 202 | |
shimniok | 34:afe994ca0e49 | 203 | |
shimniok | 35:1a8c5fce8895 | 204 | /** Attempts to match filename pattern and name. |
shimniok | 35:1a8c5fce8895 | 205 | * @param pattern is a pattern containing one '*' |
shimniok | 35:1a8c5fce8895 | 206 | * @param name is the name to check for a match to the pattern |
shimniok | 35:1a8c5fce8895 | 207 | * @returns 1 if match found, 0 if no match or bad pattern |
shimniok | 35:1a8c5fce8895 | 208 | */ |
shimniok | 35:1a8c5fce8895 | 209 | int fnmatch(char *pattern, char *name) |
shimniok | 32:fc09f0eb1e8a | 210 | { |
shimniok | 35:1a8c5fce8895 | 211 | char *p; |
shimniok | 35:1a8c5fce8895 | 212 | char *n; |
shimniok | 35:1a8c5fce8895 | 213 | int c; |
shimniok | 35:1a8c5fce8895 | 214 | |
shimniok | 35:1a8c5fce8895 | 215 | // only one * allowed |
shimniok | 35:1a8c5fce8895 | 216 | p = pattern; |
shimniok | 35:1a8c5fce8895 | 217 | c = 0; |
shimniok | 35:1a8c5fce8895 | 218 | p = strchr(p, '*'); |
shimniok | 35:1a8c5fce8895 | 219 | while (p) { |
shimniok | 35:1a8c5fce8895 | 220 | c++; |
shimniok | 35:1a8c5fce8895 | 221 | p = strchr(p+1, '*'); |
shimniok | 35:1a8c5fce8895 | 222 | } |
shimniok | 35:1a8c5fce8895 | 223 | if (c != 1) return 0; |
shimniok | 35:1a8c5fce8895 | 224 | |
shimniok | 35:1a8c5fce8895 | 225 | // match first part |
shimniok | 35:1a8c5fce8895 | 226 | //puts("first"); |
shimniok | 35:1a8c5fce8895 | 227 | p = pattern; |
shimniok | 35:1a8c5fce8895 | 228 | n = name; |
shimniok | 35:1a8c5fce8895 | 229 | char *s = strchr(pattern, '*'); |
shimniok | 35:1a8c5fce8895 | 230 | while (p != s) { |
shimniok | 35:1a8c5fce8895 | 231 | // mismatch before *? |
shimniok | 35:1a8c5fce8895 | 232 | if (toupper(*p) != toupper(*n)) { |
shimniok | 35:1a8c5fce8895 | 233 | return 0; |
shimniok | 35:1a8c5fce8895 | 234 | } |
shimniok | 35:1a8c5fce8895 | 235 | p++; |
shimniok | 35:1a8c5fce8895 | 236 | n++; |
shimniok | 35:1a8c5fce8895 | 237 | } |
shimniok | 35:1a8c5fce8895 | 238 | // match last part in reverse |
shimniok | 35:1a8c5fce8895 | 239 | //puts("second"); |
shimniok | 35:1a8c5fce8895 | 240 | p = strchr(pattern, 0)-1; |
shimniok | 35:1a8c5fce8895 | 241 | n = strchr(name, 0)-1; |
shimniok | 35:1a8c5fce8895 | 242 | while (p != s) { |
shimniok | 35:1a8c5fce8895 | 243 | // mismatch before *? |
shimniok | 35:1a8c5fce8895 | 244 | //printf("%c %c\n", *p, *n); |
shimniok | 35:1a8c5fce8895 | 245 | if (toupper(*p) != toupper(*n)) { |
shimniok | 35:1a8c5fce8895 | 246 | return 0; |
shimniok | 35:1a8c5fce8895 | 247 | } |
shimniok | 35:1a8c5fce8895 | 248 | p--; |
shimniok | 35:1a8c5fce8895 | 249 | n--; |
shimniok | 35:1a8c5fce8895 | 250 | } |
shimniok | 35:1a8c5fce8895 | 251 | |
shimniok | 35:1a8c5fce8895 | 252 | return 1; |
shimniok | 35:1a8c5fce8895 | 253 | } |
shimniok | 35:1a8c5fce8895 | 254 | |
shimniok | 35:1a8c5fce8895 | 255 | |
shimniok | 35:1a8c5fce8895 | 256 | // Run the specified callback on each matching filename |
shimniok | 35:1a8c5fce8895 | 257 | char *SimpleShell::foreach(char *pattern) |
shimniok | 35:1a8c5fce8895 | 258 | { |
shimniok | 35:1a8c5fce8895 | 259 | DIR *d = 0; |
shimniok | 35:1a8c5fce8895 | 260 | char *base; |
shimniok | 35:1a8c5fce8895 | 261 | char *path; |
shimniok | 32:fc09f0eb1e8a | 262 | struct dirent *p; |
shimniok | 35:1a8c5fce8895 | 263 | |
shimniok | 35:1a8c5fce8895 | 264 | base = basename(pattern); |
shimniok | 35:1a8c5fce8895 | 265 | path = dirname(pattern); |
shimniok | 35:1a8c5fce8895 | 266 | printf("dir:<%s> base:<%s>\n", path, base); |
shimniok | 32:fc09f0eb1e8a | 267 | if ((d = opendir(path)) != NULL) { |
shimniok | 32:fc09f0eb1e8a | 268 | while ((p = readdir(d)) != NULL) { |
shimniok | 35:1a8c5fce8895 | 269 | //printf("pattern:<%s> file:<%s>\n", base, p->d_name); |
shimniok | 35:1a8c5fce8895 | 270 | if (fnmatch(base, p->d_name) == 1) { |
shimniok | 35:1a8c5fce8895 | 271 | char *next = new char[sizeof(base) + sizeof(p->d_name) + 2]; |
shimniok | 35:1a8c5fce8895 | 272 | sprintf(next, "%s/%s", path, p->d_name); |
shimniok | 35:1a8c5fce8895 | 273 | printf("Removing %s...\n", next); |
shimniok | 35:1a8c5fce8895 | 274 | int stat = remove(next); |
shimniok | 35:1a8c5fce8895 | 275 | //int stat = f_unlink(next); |
shimniok | 35:1a8c5fce8895 | 276 | if (stat) { |
shimniok | 35:1a8c5fce8895 | 277 | printf("%s: could not remove. Error %d\n", next, stat); |
shimniok | 35:1a8c5fce8895 | 278 | } |
shimniok | 35:1a8c5fce8895 | 279 | delete[] next; |
shimniok | 35:1a8c5fce8895 | 280 | }//if |
shimniok | 35:1a8c5fce8895 | 281 | }//while |
shimniok | 32:fc09f0eb1e8a | 282 | closedir(d); |
shimniok | 35:1a8c5fce8895 | 283 | } else { |
shimniok | 35:1a8c5fce8895 | 284 | printf("%s: no such directory\n", path); |
shimniok | 32:fc09f0eb1e8a | 285 | } |
shimniok | 35:1a8c5fce8895 | 286 | |
shimniok | 35:1a8c5fce8895 | 287 | return 0; |
shimniok | 32:fc09f0eb1e8a | 288 | } |
shimniok | 32:fc09f0eb1e8a | 289 | |
shimniok | 21:5d7ac1f0b842 | 290 | |
shimniok | 21:5d7ac1f0b842 | 291 | void SimpleShell::rm(int argc, char **argv) |
shimniok | 21:5d7ac1f0b842 | 292 | { |
shimniok | 35:1a8c5fce8895 | 293 | char *arg; |
shimniok | 35:1a8c5fce8895 | 294 | |
shimniok | 21:5d7ac1f0b842 | 295 | if (argc >= 2) { |
shimniok | 21:5d7ac1f0b842 | 296 | for (int i=1; i < argc; i++) { |
shimniok | 35:1a8c5fce8895 | 297 | arg = canon(argv[i]); |
shimniok | 35:1a8c5fce8895 | 298 | if (haswildcard(argv[i])) { |
shimniok | 35:1a8c5fce8895 | 299 | foreach(arg); |
shimniok | 35:1a8c5fce8895 | 300 | } else if (remove(canon(argv[i]))) { |
shimniok | 35:1a8c5fce8895 | 301 | printf("%s: cannot remove. Error %d\n", argv[i], errno); |
shimniok | 21:5d7ac1f0b842 | 302 | } |
shimniok | 34:afe994ca0e49 | 303 | } |
shimniok | 21:5d7ac1f0b842 | 304 | } else { |
shimniok | 21:5d7ac1f0b842 | 305 | puts("usage: rm [file1 [file2 ...]]"); |
shimniok | 21:5d7ac1f0b842 | 306 | } |
shimniok | 21:5d7ac1f0b842 | 307 | } |
shimniok | 21:5d7ac1f0b842 | 308 | |
shimniok | 21:5d7ac1f0b842 | 309 | |
shimniok | 21:5d7ac1f0b842 | 310 | void SimpleShell::touch(int argc, char **argv) |
shimniok | 21:5d7ac1f0b842 | 311 | { |
shimniok | 21:5d7ac1f0b842 | 312 | FILE *fp; |
shimniok | 21:5d7ac1f0b842 | 313 | |
shimniok | 21:5d7ac1f0b842 | 314 | if (argc >= 2) { |
shimniok | 21:5d7ac1f0b842 | 315 | for (int i=1; i < argc; i++) { |
shimniok | 21:5d7ac1f0b842 | 316 | if ((fp = fopen(canon(argv[i]), "w")) != NULL) { |
shimniok | 21:5d7ac1f0b842 | 317 | fclose(fp); |
shimniok | 21:5d7ac1f0b842 | 318 | } else { |
shimniok | 21:5d7ac1f0b842 | 319 | printf("%s: cannot touch\n", argv[1]); |
shimniok | 21:5d7ac1f0b842 | 320 | } |
shimniok | 21:5d7ac1f0b842 | 321 | } |
shimniok | 21:5d7ac1f0b842 | 322 | } else { |
shimniok | 21:5d7ac1f0b842 | 323 | puts("usage: touch [file1 [file2 ...]]"); |
shimniok | 21:5d7ac1f0b842 | 324 | } |
shimniok | 21:5d7ac1f0b842 | 325 | } |
shimniok | 21:5d7ac1f0b842 | 326 | |
shimniok | 21:5d7ac1f0b842 | 327 | |
shimniok | 21:5d7ac1f0b842 | 328 | void SimpleShell::cat(int argc, char **argv) |
shimniok | 21:5d7ac1f0b842 | 329 | { |
shimniok | 21:5d7ac1f0b842 | 330 | FILE *fp; |
shimniok | 21:5d7ac1f0b842 | 331 | //int status=0; |
shimniok | 21:5d7ac1f0b842 | 332 | char *buf = new char[MAXBUF]; |
shimniok | 21:5d7ac1f0b842 | 333 | |
shimniok | 21:5d7ac1f0b842 | 334 | for (int i=1; i < argc; i++) { |
shimniok | 21:5d7ac1f0b842 | 335 | //resolveDirectory(path, arg); |
shimniok | 21:5d7ac1f0b842 | 336 | if ((fp = fopen(canon(argv[i]), "r")) != NULL) { |
shimniok | 21:5d7ac1f0b842 | 337 | while (!feof(fp)) { |
shimniok | 21:5d7ac1f0b842 | 338 | fgets(buf, MAXBUF-1, fp); |
shimniok | 21:5d7ac1f0b842 | 339 | fputs(buf, stdout); |
shimniok | 21:5d7ac1f0b842 | 340 | } |
shimniok | 21:5d7ac1f0b842 | 341 | fclose(fp); |
shimniok | 21:5d7ac1f0b842 | 342 | } else { |
shimniok | 21:5d7ac1f0b842 | 343 | fputs(argv[i], stdout); |
shimniok | 21:5d7ac1f0b842 | 344 | fputs(": No such file\n", stdout); |
shimniok | 21:5d7ac1f0b842 | 345 | //status = 1; |
shimniok | 21:5d7ac1f0b842 | 346 | } |
shimniok | 21:5d7ac1f0b842 | 347 | } |
shimniok | 21:5d7ac1f0b842 | 348 | delete[] buf; |
shimniok | 21:5d7ac1f0b842 | 349 | |
shimniok | 21:5d7ac1f0b842 | 350 | return; |
shimniok | 21:5d7ac1f0b842 | 351 | } |
shimniok | 21:5d7ac1f0b842 | 352 | |
shimniok | 21:5d7ac1f0b842 | 353 | |
shimniok | 23:b1e49cfcaef6 | 354 | void SimpleShell::send(int argc, char **argv) |
shimniok | 23:b1e49cfcaef6 | 355 | { |
shimniok | 23:b1e49cfcaef6 | 356 | const char SOF=0x01; |
shimniok | 23:b1e49cfcaef6 | 357 | const char ETX=0x03; |
shimniok | 23:b1e49cfcaef6 | 358 | const char EOT=0x04; |
shimniok | 23:b1e49cfcaef6 | 359 | const char ACK=0x07; |
shimniok | 23:b1e49cfcaef6 | 360 | const char NACK=0x18; |
shimniok | 24:004e33abce37 | 361 | char buf[1024]; |
shimniok | 23:b1e49cfcaef6 | 362 | FILE *fp; |
shimniok | 24:004e33abce37 | 363 | char c; |
shimniok | 23:b1e49cfcaef6 | 364 | |
shimniok | 23:b1e49cfcaef6 | 365 | int i = 1; |
shimniok | 23:b1e49cfcaef6 | 366 | if (argc >= 2) { |
shimniok | 23:b1e49cfcaef6 | 367 | if ((fp = fopen(canon(argv[i]), "r")) == 0) { |
shimniok | 23:b1e49cfcaef6 | 368 | printf("%s: can't open file\n", basename(argv[i])); |
shimniok | 23:b1e49cfcaef6 | 369 | } else { |
shimniok | 24:004e33abce37 | 370 | puts("Ready; initiate receive on client."); |
shimniok | 24:004e33abce37 | 371 | c = getchar(); |
shimniok | 24:004e33abce37 | 372 | if (c == SOF) { |
shimniok | 24:004e33abce37 | 373 | puts(basename(argv[i])); |
shimniok | 24:004e33abce37 | 374 | c = getchar(); |
shimniok | 24:004e33abce37 | 375 | if (c == ACK) { |
shimniok | 24:004e33abce37 | 376 | while (!feof(fp)) { |
shimniok | 24:004e33abce37 | 377 | fgets(buf, 1024, fp); |
shimniok | 24:004e33abce37 | 378 | fputs(buf, stdout); |
shimniok | 24:004e33abce37 | 379 | } |
shimniok | 24:004e33abce37 | 380 | putchar(EOT); |
shimniok | 24:004e33abce37 | 381 | } else if (c == NACK) { |
shimniok | 24:004e33abce37 | 382 | puts("client error."); |
shimniok | 24:004e33abce37 | 383 | } else { |
shimniok | 24:004e33abce37 | 384 | puts("ACK/NACK expected"); |
shimniok | 24:004e33abce37 | 385 | } |
shimniok | 24:004e33abce37 | 386 | } else if (c == NACK) { |
shimniok | 24:004e33abce37 | 387 | puts("server cancelled."); |
shimniok | 24:004e33abce37 | 388 | } else { |
shimniok | 24:004e33abce37 | 389 | puts("SOF/NACK expected."); |
shimniok | 24:004e33abce37 | 390 | } |
shimniok | 24:004e33abce37 | 391 | fclose(fp); |
shimniok | 23:b1e49cfcaef6 | 392 | } |
shimniok | 23:b1e49cfcaef6 | 393 | } else { |
shimniok | 23:b1e49cfcaef6 | 394 | puts("usage: send file1 [file2 ...]"); |
shimniok | 23:b1e49cfcaef6 | 395 | } |
shimniok | 23:b1e49cfcaef6 | 396 | } |
shimniok | 23:b1e49cfcaef6 | 397 | |
shimniok | 23:b1e49cfcaef6 | 398 | |
shimniok | 21:5d7ac1f0b842 | 399 | void SimpleShell::run() |
shimniok | 21:5d7ac1f0b842 | 400 | { |
shimniok | 21:5d7ac1f0b842 | 401 | bool done=false; |
shimniok | 21:5d7ac1f0b842 | 402 | callback_t cb; |
shimniok | 21:5d7ac1f0b842 | 403 | //int status; // TODO implement command status return |
shimniok | 21:5d7ac1f0b842 | 404 | std::string x; |
shimniok | 21:5d7ac1f0b842 | 405 | |
shimniok | 21:5d7ac1f0b842 | 406 | printf("Type help for assistance.\n"); |
shimniok | 21:5d7ac1f0b842 | 407 | help(0, NULL); |
shimniok | 21:5d7ac1f0b842 | 408 | while (!done) { |
shimniok | 21:5d7ac1f0b842 | 409 | printPrompt(); |
shimniok | 21:5d7ac1f0b842 | 410 | readCommand(); |
shimniok | 21:5d7ac1f0b842 | 411 | if (argv[0]) { // skip blank command |
shimniok | 21:5d7ac1f0b842 | 412 | if (cb = findCommand()) { |
shimniok | 21:5d7ac1f0b842 | 413 | cb.call(argc, argv); |
shimniok | 21:5d7ac1f0b842 | 414 | } else { |
shimniok | 21:5d7ac1f0b842 | 415 | printf("command <%s> not found\n", argv[0]); |
shimniok | 21:5d7ac1f0b842 | 416 | } |
shimniok | 21:5d7ac1f0b842 | 417 | } |
shimniok | 21:5d7ac1f0b842 | 418 | } |
shimniok | 21:5d7ac1f0b842 | 419 | puts("exiting shell\n"); |
shimniok | 21:5d7ac1f0b842 | 420 | |
shimniok | 21:5d7ac1f0b842 | 421 | return; |
shimniok | 21:5d7ac1f0b842 | 422 | } |
shimniok | 21:5d7ac1f0b842 | 423 | |
shimniok | 21:5d7ac1f0b842 | 424 | |
shimniok | 28:753db82debb1 | 425 | void SimpleShell::command(callback_t cb, char *command) |
shimniok | 21:5d7ac1f0b842 | 426 | { |
shimniok | 21:5d7ac1f0b842 | 427 | if (lookupEnd < MAXLOOKUP) { |
shimniok | 21:5d7ac1f0b842 | 428 | lookup[lookupEnd].cb = cb; |
shimniok | 21:5d7ac1f0b842 | 429 | lookup[lookupEnd].command = command; |
shimniok | 21:5d7ac1f0b842 | 430 | lookupEnd++; |
shimniok | 21:5d7ac1f0b842 | 431 | } |
shimniok | 21:5d7ac1f0b842 | 432 | |
shimniok | 21:5d7ac1f0b842 | 433 | return; |
shimniok | 21:5d7ac1f0b842 | 434 | } |
shimniok | 21:5d7ac1f0b842 | 435 | |
shimniok | 21:5d7ac1f0b842 | 436 | |
shimniok | 21:5d7ac1f0b842 | 437 | SimpleShell::callback_t SimpleShell::findCommand() |
shimniok | 21:5d7ac1f0b842 | 438 | { |
shimniok | 21:5d7ac1f0b842 | 439 | SimpleShell::callback_t cb=NULL; |
shimniok | 21:5d7ac1f0b842 | 440 | |
shimniok | 21:5d7ac1f0b842 | 441 | for (int i=0; i < lookupEnd; i++) { |
shimniok | 21:5d7ac1f0b842 | 442 | if (strncmp(argv[0], lookup[i].command, MAXBUF) == 0) { |
shimniok | 21:5d7ac1f0b842 | 443 | cb = lookup[i].cb; |
shimniok | 21:5d7ac1f0b842 | 444 | break; |
shimniok | 21:5d7ac1f0b842 | 445 | } |
shimniok | 21:5d7ac1f0b842 | 446 | } |
shimniok | 21:5d7ac1f0b842 | 447 | |
shimniok | 21:5d7ac1f0b842 | 448 | return cb; |
shimniok | 21:5d7ac1f0b842 | 449 | } |
shimniok | 21:5d7ac1f0b842 | 450 | |
shimniok | 21:5d7ac1f0b842 | 451 | |
shimniok | 21:5d7ac1f0b842 | 452 | void SimpleShell::printPrompt() |
shimniok | 21:5d7ac1f0b842 | 453 | { |
shimniok | 21:5d7ac1f0b842 | 454 | fputc('(', stdout); |
shimniok | 21:5d7ac1f0b842 | 455 | fputs(_cwd, stdout); |
shimniok | 21:5d7ac1f0b842 | 456 | fputs(")# ", stdout); |
shimniok | 21:5d7ac1f0b842 | 457 | |
shimniok | 21:5d7ac1f0b842 | 458 | return; |
shimniok | 21:5d7ac1f0b842 | 459 | } |
shimniok | 21:5d7ac1f0b842 | 460 | |
shimniok | 21:5d7ac1f0b842 | 461 | |
shimniok | 21:5d7ac1f0b842 | 462 | void SimpleShell::readCommand() |
shimniok | 21:5d7ac1f0b842 | 463 | { |
shimniok | 21:5d7ac1f0b842 | 464 | int i=0; |
shimniok | 21:5d7ac1f0b842 | 465 | char c; |
shimniok | 21:5d7ac1f0b842 | 466 | bool done = false; |
shimniok | 21:5d7ac1f0b842 | 467 | static char cmd[MAXBUF]; |
shimniok | 21:5d7ac1f0b842 | 468 | |
shimniok | 21:5d7ac1f0b842 | 469 | memset(cmd, 0, MAXBUF); |
shimniok | 21:5d7ac1f0b842 | 470 | do { |
shimniok | 21:5d7ac1f0b842 | 471 | cmd[i] = 0; |
shimniok | 21:5d7ac1f0b842 | 472 | c = fgetc(stdin); |
shimniok | 21:5d7ac1f0b842 | 473 | if (c == '\r') { // if return is hit, we're done, don't add \r to cmd |
shimniok | 21:5d7ac1f0b842 | 474 | done = true; |
shimniok | 21:5d7ac1f0b842 | 475 | } else if (c == ESC) { // keyboard escape codes (arrow keys, etc) |
shimniok | 21:5d7ac1f0b842 | 476 | int c2 = getchar(); |
shimniok | 21:5d7ac1f0b842 | 477 | int c3 = getchar(); |
shimniok | 21:5d7ac1f0b842 | 478 | |
shimniok | 21:5d7ac1f0b842 | 479 | if (c2 == 0x4f && c3 == 0x46) { |
shimniok | 21:5d7ac1f0b842 | 480 | printf("<END>"); |
shimniok | 21:5d7ac1f0b842 | 481 | } else if (c2 == 0x5b) { |
shimniok | 21:5d7ac1f0b842 | 482 | |
shimniok | 21:5d7ac1f0b842 | 483 | if (c3 == UP) { |
shimniok | 21:5d7ac1f0b842 | 484 | printf("<UP>"); |
shimniok | 21:5d7ac1f0b842 | 485 | } else if (c3 == DOWN) { |
shimniok | 21:5d7ac1f0b842 | 486 | printf("<DOWN>"); |
shimniok | 21:5d7ac1f0b842 | 487 | } else if (c3 == RIGHT) { |
shimniok | 21:5d7ac1f0b842 | 488 | printf("<RIGHT>"); |
shimniok | 21:5d7ac1f0b842 | 489 | } else if (c3 == LEFT) { |
shimniok | 21:5d7ac1f0b842 | 490 | printf("<LEFT>"); |
shimniok | 21:5d7ac1f0b842 | 491 | } else if (c3 == HOME || c3 == INS || c3 == DEL || |
shimniok | 21:5d7ac1f0b842 | 492 | c3 == PGUP || c3 == PGDN) { |
shimniok | 21:5d7ac1f0b842 | 493 | char c4 = getchar(); |
shimniok | 21:5d7ac1f0b842 | 494 | if (c4 == TAIL) { |
shimniok | 21:5d7ac1f0b842 | 495 | if (c4 == HOME) { |
shimniok | 21:5d7ac1f0b842 | 496 | printf("<HOME>"); |
shimniok | 21:5d7ac1f0b842 | 497 | } else if (c4 == INS) { |
shimniok | 21:5d7ac1f0b842 | 498 | printf("<INS>"); |
shimniok | 21:5d7ac1f0b842 | 499 | } else if (c4 == DEL) { |
shimniok | 21:5d7ac1f0b842 | 500 | printf("<DEL>"); |
shimniok | 21:5d7ac1f0b842 | 501 | } else if (c4 == PGUP) { |
shimniok | 21:5d7ac1f0b842 | 502 | printf("<PGUP>"); |
shimniok | 21:5d7ac1f0b842 | 503 | } else if (c4 == PGDN) { |
shimniok | 21:5d7ac1f0b842 | 504 | printf("<PGDN>"); |
shimniok | 21:5d7ac1f0b842 | 505 | }//if |
shimniok | 21:5d7ac1f0b842 | 506 | }//if |
shimniok | 21:5d7ac1f0b842 | 507 | }//if |
shimniok | 21:5d7ac1f0b842 | 508 | }//if |
shimniok | 21:5d7ac1f0b842 | 509 | //printf("\n"); |
shimniok | 21:5d7ac1f0b842 | 510 | } else if (i < MAXBUF-1) { |
shimniok | 21:5d7ac1f0b842 | 511 | if (c == 0x7f || c == '\b') { // backspace or delete |
shimniok | 21:5d7ac1f0b842 | 512 | if (i > 0) { // if we're at the beginning, do nothing |
shimniok | 21:5d7ac1f0b842 | 513 | i--; |
shimniok | 21:5d7ac1f0b842 | 514 | fputs("\b \b", stdout); |
shimniok | 21:5d7ac1f0b842 | 515 | } |
shimniok | 21:5d7ac1f0b842 | 516 | } else { |
shimniok | 21:5d7ac1f0b842 | 517 | if (isprint(c)) |
shimniok | 21:5d7ac1f0b842 | 518 | fputc(c, stdout); |
shimniok | 21:5d7ac1f0b842 | 519 | cmd[i++] = c; |
shimniok | 21:5d7ac1f0b842 | 520 | } |
shimniok | 21:5d7ac1f0b842 | 521 | } |
shimniok | 21:5d7ac1f0b842 | 522 | |
shimniok | 21:5d7ac1f0b842 | 523 | } while (!done); |
shimniok | 21:5d7ac1f0b842 | 524 | fputc('\n', stdout); |
shimniok | 21:5d7ac1f0b842 | 525 | |
shimniok | 21:5d7ac1f0b842 | 526 | // remove leading/trailing whitespace |
shimniok | 21:5d7ac1f0b842 | 527 | char *s = cmd; |
shimniok | 21:5d7ac1f0b842 | 528 | while (isspace(*s)) { |
shimniok | 21:5d7ac1f0b842 | 529 | s++; |
shimniok | 21:5d7ac1f0b842 | 530 | } |
shimniok | 21:5d7ac1f0b842 | 531 | for (int j=i; j >= 0 && isspace(cmd[j]); j--) { |
shimniok | 21:5d7ac1f0b842 | 532 | cmd[j] = '\0'; |
shimniok | 21:5d7ac1f0b842 | 533 | } |
shimniok | 21:5d7ac1f0b842 | 534 | |
shimniok | 21:5d7ac1f0b842 | 535 | // split into command and arguments |
shimniok | 21:5d7ac1f0b842 | 536 | argc = 0; |
shimniok | 21:5d7ac1f0b842 | 537 | char *t; |
shimniok | 21:5d7ac1f0b842 | 538 | |
shimniok | 21:5d7ac1f0b842 | 539 | for (int i=0; i < MAXARGS; i++) { |
shimniok | 21:5d7ac1f0b842 | 540 | argv[i] = NULL; |
shimniok | 21:5d7ac1f0b842 | 541 | } |
shimniok | 21:5d7ac1f0b842 | 542 | t = strtok(s, " "); |
shimniok | 30:35522ea06236 | 543 | while (t && argc < MAXARGS) { |
shimniok | 21:5d7ac1f0b842 | 544 | argv[argc++] = t; |
shimniok | 21:5d7ac1f0b842 | 545 | t = strtok(NULL, " "); |
shimniok | 21:5d7ac1f0b842 | 546 | } |
shimniok | 21:5d7ac1f0b842 | 547 | |
shimniok | 21:5d7ac1f0b842 | 548 | return; |
shimniok | 21:5d7ac1f0b842 | 549 | } |