[589] | 1 | /////////////////////////////////////////////////////////////////////////////////////// |
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[782] | 2 | // File : shell.c |
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| 3 | // Date : july 2015 |
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| 4 | // authors : Clément Guérin and Alain Greiner |
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[589] | 5 | /////////////////////////////////////////////////////////////////////////////////////// |
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[782] | 6 | // Simple shell for the GIET_VM. |
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[589] | 7 | /////////////////////////////////////////////////////////////////////////////////////// |
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| 8 | |
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| 9 | #include "stdio.h" |
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[703] | 10 | #include "stdlib.h" |
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[589] | 11 | #include "malloc.h" |
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[782] | 12 | #include "string.h" |
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[589] | 13 | |
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[747] | 14 | #define BUF_SIZE (256) // buffer for one command |
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| 15 | #define MAX_ARGS (32) // max number of arguments in a command |
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[782] | 16 | #define FIFO_SIZE (1024) // FIFO depth for recursive ls |
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[589] | 17 | |
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[712] | 18 | |
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[640] | 19 | struct command_t |
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| 20 | { |
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| 21 | char *name; |
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[708] | 22 | char *desc; |
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[640] | 23 | void (*fn)(int, char**); |
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| 24 | }; |
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[589] | 25 | |
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[640] | 26 | //////////////////////////////////////////////////////////////////////////////// |
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[643] | 27 | // Shell Commands |
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| 28 | //////////////////////////////////////////////////////////////////////////////// |
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[640] | 29 | |
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| 30 | struct command_t cmd[]; |
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| 31 | |
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[643] | 32 | /////////////////////////////////////////// |
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[640] | 33 | static void cmd_help(int argc, char** argv) |
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[589] | 34 | { |
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[640] | 35 | int i; |
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[589] | 36 | |
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[640] | 37 | giet_tty_printf("available commands:\n"); |
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[610] | 38 | |
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[640] | 39 | for (i = 0; cmd[i].name; i++) |
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[589] | 40 | { |
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[708] | 41 | giet_tty_printf("\t%s\t : %s\n", cmd[i].name , cmd[i].desc ); |
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[589] | 42 | } |
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[640] | 43 | } |
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| 44 | |
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[708] | 45 | /////////////////////////////////////////// |
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| 46 | static void cmd_time(int argc, char** argv) |
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[640] | 47 | { |
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[775] | 48 | giet_tty_printf(" cycle = %d\n", giet_proctime()); |
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[640] | 49 | } |
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| 50 | |
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[782] | 51 | |
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[643] | 52 | ///////////////////////////////////////// |
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[640] | 53 | static void cmd_ls(int argc, char** argv) |
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| 54 | { |
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[782] | 55 | fat_dirent_t entry; |
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| 56 | unsigned int recursive; |
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| 57 | char* paths[FIFO_SIZE]; |
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| 58 | unsigned int ptr = 0; |
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| 59 | unsigned int ptw = 0; |
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[660] | 60 | |
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[782] | 61 | // analyse arguments |
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[775] | 62 | if (argc == 2) |
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[708] | 63 | { |
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[782] | 64 | // allocate a buffer for root directory |
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| 65 | // pathname, and push it in FIFO |
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| 66 | paths[ptw] = malloc( strlen(argv[1]) ); |
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| 67 | strcpy( paths[ptw] , argv[1] ); |
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| 68 | |
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| 69 | giet_tty_printf("\n@@@ arg = %s / path = %s\n", argv[1] , paths[ptw] ); |
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| 70 | |
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| 71 | ptw = (ptw + 1) % FIFO_SIZE; |
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| 72 | |
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| 73 | // not recursive |
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| 74 | recursive = 0; |
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[775] | 75 | } |
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| 76 | else if ( (argc == 3) && (strcmp( argv[1] , "-r" ) == 0) ) |
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| 77 | { |
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[782] | 78 | // allocate a buffer for root directory |
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| 79 | // pathname, and push it in FIFO |
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| 80 | paths[ptw] = malloc( strlen(argv[2]) ); |
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| 81 | strcpy( paths[ptw] , argv[2] ); |
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| 82 | ptw = (ptw + 1) % FIFO_SIZE; |
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[775] | 83 | |
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[782] | 84 | // recursive |
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| 85 | recursive = 1; |
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[708] | 86 | } |
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[775] | 87 | else |
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| 88 | { |
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| 89 | giet_tty_printf(" usage : ls [-r] pathname\n"); |
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| 90 | return; |
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| 91 | } |
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[660] | 92 | |
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[782] | 93 | // loop on registered directories |
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| 94 | do |
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[589] | 95 | { |
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[782] | 96 | // open directory |
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| 97 | int fd = giet_fat_opendir( paths[ptr] ); |
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| 98 | if (fd < 0) |
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| 99 | { |
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| 100 | giet_tty_printf(" error : cannot open %s\n", paths[ptr] ); |
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| 101 | return; |
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| 102 | } |
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[589] | 103 | |
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[782] | 104 | // display directory pathname |
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| 105 | giet_tty_printf("*** %s ***\n", paths[ptr] ); |
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[660] | 106 | |
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[782] | 107 | // loop on directory entries |
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| 108 | while (giet_fat_readdir(fd, &entry) == 0) |
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| 109 | { |
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| 110 | // display entry |
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| 111 | if ( entry.is_dir ) giet_tty_printf("dir "); |
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| 112 | else giet_tty_printf("file"); |
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| 113 | giet_tty_printf(" | size = %d \t| cluster = %x \t| %s\n", |
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| 114 | entry.size, entry.cluster, entry.name ); |
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[660] | 115 | |
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[782] | 116 | // allocate a buffer for subdirectory pathname |
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| 117 | // and push it in FIFO if required |
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| 118 | if ( entry.is_dir && recursive && |
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| 119 | ( strcmp( entry.name , "." ) != 0 ) && |
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| 120 | ( strcmp( entry.name , ".." ) != 0 ) ) |
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| 121 | { |
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| 122 | // check FIFO full |
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| 123 | if ( ((ptr - ptw) % FIFO_SIZE) == 1 ) |
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| 124 | { |
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| 125 | giet_tty_printf(" sorry, not enough memory for recursive ls\n"); |
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| 126 | return; |
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| 127 | } |
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[640] | 128 | |
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[782] | 129 | unsigned int length = strlen(paths[ptr]) + strlen(entry.name) + 2; |
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| 130 | paths[ptw] = malloc( length ); |
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| 131 | if ( strcmp( paths[ptr] , "/" ) == 0 ) |
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| 132 | { |
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| 133 | snprintf( paths[ptw] , length , "/%s" , entry.name ); |
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| 134 | } |
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| 135 | else |
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| 136 | { |
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| 137 | snprintf( paths[ptw] , length , "%s/%s" , paths[ptr] , entry.name ); |
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| 138 | } |
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| 139 | ptw = (ptw + 1) % FIFO_SIZE; |
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| 140 | } |
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| 141 | } // end loop on entries |
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| 142 | |
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| 143 | // close directory |
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| 144 | giet_fat_closedir(fd); |
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| 145 | |
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| 146 | // release the directory pathname buffer |
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| 147 | // and pop it from FIFO |
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| 148 | free( paths[ptr] ); |
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| 149 | ptr = (ptr + 1) % FIFO_SIZE; |
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| 150 | |
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| 151 | } while ( ptr != ptw ); |
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| 152 | |
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| 153 | } // end cmd_ls() |
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| 154 | |
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[643] | 155 | //////////////////////////////////////////// |
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[640] | 156 | static void cmd_mkdir(int argc, char** argv) |
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| 157 | { |
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| 158 | if (argc < 2) |
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[589] | 159 | { |
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[775] | 160 | giet_tty_printf(" usage : mkdir pathname\n"); |
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[640] | 161 | return; |
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[589] | 162 | } |
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[640] | 163 | |
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| 164 | int ret = giet_fat_mkdir(argv[1]); |
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[708] | 165 | |
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[640] | 166 | if (ret < 0) |
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[589] | 167 | { |
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[708] | 168 | giet_tty_printf(" error : cannot create directory %s / err = %d\n", argv[1], ret); |
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[589] | 169 | } |
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[640] | 170 | } |
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[589] | 171 | |
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[643] | 172 | ///////////////////////////////////////// |
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[640] | 173 | static void cmd_cp(int argc, char** argv) |
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| 174 | { |
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| 175 | if (argc < 3) |
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[589] | 176 | { |
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[775] | 177 | giet_tty_printf(" usage : cp src_pathname dst_pathname>\n"); |
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[640] | 178 | return; |
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[589] | 179 | } |
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| 180 | |
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[640] | 181 | char buf[1024]; |
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| 182 | int src_fd = -1; |
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| 183 | int dst_fd = -1; |
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[660] | 184 | fat_file_info_t info; |
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[640] | 185 | int size; |
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| 186 | int i; |
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| 187 | |
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| 188 | src_fd = giet_fat_open( argv[1] , O_RDONLY ); |
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| 189 | if (src_fd < 0) |
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[589] | 190 | { |
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[708] | 191 | giet_tty_printf(" error : cannot open %s / err = %d\n", argv[1], src_fd); |
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[640] | 192 | goto exit; |
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[589] | 193 | } |
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[640] | 194 | |
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| 195 | giet_fat_file_info(src_fd, &info); |
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[708] | 196 | |
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[640] | 197 | if (info.is_dir) |
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[589] | 198 | { |
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[708] | 199 | giet_tty_printf(" error : %s is a directory\n", argv[1] ); |
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[640] | 200 | goto exit; |
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[589] | 201 | } |
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[708] | 202 | |
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[640] | 203 | size = info.size; |
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[589] | 204 | |
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[772] | 205 | dst_fd = giet_fat_open( argv[2] , O_CREAT | O_TRUNC); |
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[708] | 206 | |
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[640] | 207 | if (dst_fd < 0) |
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[589] | 208 | { |
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[708] | 209 | giet_tty_printf(" error : cannot open %s / err = %d\n", argv[2], dst_fd); |
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[640] | 210 | goto exit; |
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[589] | 211 | } |
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| 212 | |
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[640] | 213 | giet_fat_file_info(dst_fd, &info); |
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[708] | 214 | |
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[640] | 215 | if (info.is_dir) |
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[589] | 216 | { |
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[775] | 217 | giet_tty_printf(" error : %s is a directory\n", argv[2] ); // TODO |
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[640] | 218 | goto exit; |
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[589] | 219 | } |
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[640] | 220 | |
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| 221 | i = 0; |
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| 222 | while (i < size) |
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[589] | 223 | { |
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[640] | 224 | int len = (size - i < 1024 ? size - i : 1024); |
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| 225 | int wlen; |
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| 226 | |
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| 227 | len = giet_fat_read(src_fd, &buf, len); |
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| 228 | wlen = giet_fat_write(dst_fd, &buf, len); |
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| 229 | if (wlen != len) |
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| 230 | { |
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[708] | 231 | giet_tty_printf(" error : cannot write on device\n"); |
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[640] | 232 | goto exit; |
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| 233 | } |
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| 234 | i += len; |
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[589] | 235 | } |
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| 236 | |
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[640] | 237 | exit: |
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| 238 | if (src_fd >= 0) |
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| 239 | giet_fat_close(src_fd); |
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| 240 | if (dst_fd >= 0) |
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| 241 | giet_fat_close(dst_fd); |
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| 242 | } |
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| 243 | |
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[669] | 244 | ///////////////////////////////////////// |
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[640] | 245 | static void cmd_rm(int argc, char **argv) |
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| 246 | { |
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| 247 | if (argc < 2) |
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[589] | 248 | { |
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[775] | 249 | giet_tty_printf(" usage : rm pathname\n"); |
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[640] | 250 | return; |
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[589] | 251 | } |
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[640] | 252 | |
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| 253 | int ret = giet_fat_remove(argv[1], 0); |
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[708] | 254 | |
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[640] | 255 | if (ret < 0) |
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[589] | 256 | { |
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[708] | 257 | giet_tty_printf(" error : cannot remove %s / err = %d\n", argv[1], ret ); |
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[589] | 258 | } |
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[640] | 259 | } |
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[589] | 260 | |
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[643] | 261 | //////////////////////////////////////////// |
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[640] | 262 | static void cmd_rmdir(int argc, char **argv) |
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| 263 | { |
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| 264 | if (argc < 2) |
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[589] | 265 | { |
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[775] | 266 | giet_tty_printf(" usage : rmdir pathname\n"); |
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[640] | 267 | return; |
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[589] | 268 | } |
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[640] | 269 | |
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| 270 | int ret = giet_fat_remove(argv[1], 1); |
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| 271 | if (ret < 0) |
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[589] | 272 | { |
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[708] | 273 | giet_tty_printf(" error : cannot remove %s / err = %d\n", argv[1], ret ); |
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[589] | 274 | } |
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[640] | 275 | } |
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[589] | 276 | |
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[643] | 277 | ///////////////////////////////////////// |
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[640] | 278 | static void cmd_mv(int argc, char **argv) |
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| 279 | { |
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| 280 | if (argc < 3) |
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[589] | 281 | { |
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[775] | 282 | giet_tty_printf(" usage : %s src_pathname dst_pathname\n", argv[0]); |
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[640] | 283 | return; |
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[589] | 284 | } |
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[640] | 285 | |
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| 286 | int ret = giet_fat_rename(argv[1], argv[2]); |
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| 287 | if (ret < 0) |
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[589] | 288 | { |
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[708] | 289 | giet_tty_printf("error : cannot move %s to %s / err = %d\n", argv[1], argv[2], ret ); |
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[589] | 290 | } |
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[640] | 291 | } |
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[589] | 292 | |
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[643] | 293 | /////////////////////////////////////////// |
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| 294 | static void cmd_exec(int argc, char **argv) |
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| 295 | { |
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| 296 | if (argc < 2) |
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| 297 | { |
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[775] | 298 | giet_tty_printf(" usage : %s vspace_name\n", argv[0]); |
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[643] | 299 | return; |
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| 300 | } |
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| 301 | |
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| 302 | int ret = giet_exec_application(argv[1]); |
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| 303 | if ( ret == -1 ) |
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| 304 | { |
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[708] | 305 | giet_tty_printf(" error : %s not found\n", argv[1] ); |
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[643] | 306 | } |
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| 307 | } |
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| 308 | |
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| 309 | /////////////////////////////////////////// |
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| 310 | static void cmd_kill(int argc, char **argv) |
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| 311 | { |
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| 312 | if (argc < 2) |
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| 313 | { |
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[775] | 314 | giet_tty_printf(" usage : %s vspace_name\n", argv[0]); |
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[643] | 315 | return; |
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| 316 | } |
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| 317 | |
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| 318 | int ret = giet_kill_application(argv[1]); |
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| 319 | if ( ret == -1 ) |
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| 320 | { |
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[708] | 321 | giet_tty_printf(" error : %s not found\n", argv[1] ); |
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[643] | 322 | } |
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| 323 | if ( ret == -2 ) |
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| 324 | { |
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[708] | 325 | giet_tty_printf(" error : %s cannot be killed\n", argv[1] ); |
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[643] | 326 | } |
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| 327 | } |
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| 328 | |
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[708] | 329 | ///////////////////////////////////////// |
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[687] | 330 | static void cmd_ps(int argc, char** argv) |
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| 331 | { |
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[712] | 332 | if (argc == 1) |
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| 333 | { |
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| 334 | giet_applications_status( NULL ); |
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| 335 | } |
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| 336 | else |
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| 337 | { |
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| 338 | giet_applications_status( argv[1] ); |
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| 339 | } |
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[687] | 340 | } |
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| 341 | |
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[708] | 342 | //////////////////////////////////////////// |
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| 343 | static void cmd_pause(int argc, char** argv) |
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[703] | 344 | { |
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[708] | 345 | if (argc < 3) |
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| 346 | { |
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[775] | 347 | giet_tty_printf(" usage : %s vspace_name thread_name\n", argv[0] ); |
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[708] | 348 | return; |
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| 349 | } |
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[703] | 350 | |
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[712] | 351 | giet_pthread_control( THREAD_CMD_PAUSE , argv[1] , argv[2] ); |
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[708] | 352 | } |
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| 353 | |
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| 354 | ///////////////////////////////////////////// |
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| 355 | static void cmd_resume(int argc, char** argv) |
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| 356 | { |
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| 357 | if (argc < 3) |
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| 358 | { |
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[775] | 359 | giet_tty_printf(" usage : %s vspace_name thread_name\n", argv[0] ); |
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[703] | 360 | return; |
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| 361 | } |
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| 362 | |
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[712] | 363 | giet_pthread_control( THREAD_CMD_RESUME , argv[1] , argv[2] ); |
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[703] | 364 | } |
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| 365 | |
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[708] | 366 | ///////////////////////////////////////////// |
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| 367 | static void cmd_context(int argc, char** argv) |
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| 368 | { |
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| 369 | if (argc < 3) |
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| 370 | { |
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[775] | 371 | giet_tty_printf(" usage : %s vspace_name thread_name\n", argv[0] ); |
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[708] | 372 | return; |
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| 373 | } |
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| 374 | |
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[712] | 375 | giet_pthread_control( THREAD_CMD_CONTEXT , argv[1] , argv[2] ); |
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[708] | 376 | } |
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| 377 | |
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[747] | 378 | ///////////////////////////////////////////// |
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| 379 | static void cmd_cat(int argc, char** argv) |
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| 380 | { |
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[775] | 381 | if (argc != 2) |
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[747] | 382 | { |
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[775] | 383 | giet_tty_printf(" usage : cat pathname \n"); |
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[747] | 384 | return; |
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| 385 | } |
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[708] | 386 | |
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[768] | 387 | unsigned int x,y,p; // processor coordinates |
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[747] | 388 | unsigned int fd; // file descriptor |
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| 389 | fat_file_info_t info; // file info |
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| 390 | unsigned int size; // buffer size (file_size + 1) |
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[768] | 391 | unsigned int bytes; // number of bytes to be mapped |
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| 392 | char* buf = NULL; // temporary buffer |
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[747] | 393 | |
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| 394 | // get processor coordinates |
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| 395 | giet_proc_xyp( &x , &y , &p ); |
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| 396 | |
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| 397 | // open the file to display |
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[768] | 398 | fd = giet_fat_open( argv[1] , 0 ); |
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[747] | 399 | if (fd < 0) |
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| 400 | { |
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| 401 | giet_tty_printf(" error : cannot open %s\n", argv[1]); |
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| 402 | goto exit; |
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| 403 | } |
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| 404 | |
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| 405 | // get file size |
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| 406 | giet_fat_file_info( fd, &info ); |
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| 407 | if ( info.is_dir ) |
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| 408 | { |
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| 409 | giet_tty_printf(" error : %s is a directory\n", argv[1] ); |
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| 410 | goto exit; |
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| 411 | } |
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| 412 | size = info.size; |
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| 413 | |
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[768] | 414 | // extend size to 4 Kbytes boundary if required |
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| 415 | if ( (size+1) & 0xFFF) bytes = (size & 0xFFFFF000) + 0x1000; |
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| 416 | else bytes = size + 1; |
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| 417 | |
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| 418 | // map local buffer to Cache_file |
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| 419 | buf = giet_fat_mmap( NULL, |
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| 420 | bytes, |
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| 421 | MAP_PROT_READ | MAP_PROT_WRITE, |
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| 422 | MAP_SHARED, |
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| 423 | fd, |
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| 424 | 0 ); |
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| 425 | if ( buf == NULL ) |
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| 426 | { |
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| 427 | giet_tty_printf(" error : cannot map %s\n", argv[1] ); |
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| 428 | goto exit; |
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| 429 | } |
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| 430 | |
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| 431 | // set terminating '0' |
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[747] | 432 | buf[size] = 0; |
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| 433 | |
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| 434 | // display the file content |
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[768] | 435 | giet_tty_printf("%s", buf ); |
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[747] | 436 | |
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| 437 | exit: |
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| 438 | if ( fd >= 0 ) giet_fat_close( fd ); |
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[768] | 439 | if ( buf != NULL ) giet_fat_munmap( buf , bytes ); |
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[747] | 440 | } |
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| 441 | |
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[775] | 442 | /////////////////////////////////////////// |
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| 443 | static void cmd_dump(int argc, char** argv) |
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| 444 | { |
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| 445 | if ((argc == 2) && (strcmp( argv[1] , "-bs" ) == 0)) |
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| 446 | { |
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| 447 | giet_fat_dump( DUMP_BS , NULL , 0 ); |
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| 448 | } |
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| 449 | else if ((argc == 2) && (strcmp( argv[1] , "-fs" ) == 0)) |
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| 450 | { |
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| 451 | giet_fat_dump( DUMP_FS , NULL , 0 ); |
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| 452 | } |
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| 453 | else if ((argc == 3) && (strcmp( argv[1] , "-fat" ) == 0)) |
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| 454 | { |
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| 455 | giet_fat_dump( DUMP_FAT , NULL , atoi( argv[2] ) ); |
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| 456 | } |
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| 457 | else if ((argc == 4) && (strcmp( argv[1] , "-file" ) == 0)) |
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| 458 | { |
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| 459 | giet_fat_dump( DUMP_FILE , argv[2] , atoi( argv[3] ) ); |
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| 460 | } |
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| 461 | else if ((argc == 4) && (strcmp( argv[1] , "-dir" ) == 0)) |
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| 462 | { |
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| 463 | giet_fat_dump( DUMP_DIR , argv[2] , atoi( argv[3] ) ); |
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| 464 | } |
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| 465 | else |
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| 466 | { |
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| 467 | giet_tty_printf(" usage : dump [-bs] [-fs] [-fat block] " |
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| 468 | "[-file pathname block] [-dir pathname block]\n"); |
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| 469 | return; |
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| 470 | } |
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| 471 | } |
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| 472 | |
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| 473 | |
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[643] | 474 | //////////////////////////////////////////////////////////////////// |
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[640] | 475 | struct command_t cmd[] = |
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| 476 | { |
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[747] | 477 | { "cat", "display file content", cmd_cat }, |
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| 478 | { "context", "display a thread context", cmd_context }, |
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| 479 | { "cp", "replicate a file in file system", cmd_cp }, |
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[775] | 480 | { "dump", "display content of disk sector", cmd_dump }, |
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[747] | 481 | { "exec", "start an application", cmd_exec }, |
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[708] | 482 | { "help", "list available commands", cmd_help }, |
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[747] | 483 | { "kill", "kill an application (all threads)", cmd_kill }, |
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[708] | 484 | { "ls", "list content of a directory", cmd_ls }, |
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| 485 | { "mkdir", "create a new directory", cmd_mkdir }, |
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| 486 | { "mv", "move a file in file system", cmd_mv }, |
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[747] | 487 | { "pause", "pause a thread", cmd_pause }, |
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[708] | 488 | { "ps", "list all mapped applications status", cmd_ps }, |
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| 489 | { "resume", "resume a thread", cmd_resume }, |
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[747] | 490 | { "rm", "remove a file from file system", cmd_rm }, |
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| 491 | { "rmdir", "remove a directory from file system", cmd_rmdir }, |
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| 492 | { "time", "return current date", cmd_time }, |
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[708] | 493 | { NULL, NULL, NULL } |
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[640] | 494 | }; |
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| 495 | |
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[643] | 496 | // shell |
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[640] | 497 | |
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[747] | 498 | /////////////////////////////////////////////////////////////////// |
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| 499 | // This function analyses one command (with arguments) |
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| 500 | /////////////////////////////////////////////////////////////////// |
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[703] | 501 | static void parse(char *buf) |
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[640] | 502 | { |
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| 503 | int argc = 0; |
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| 504 | char* argv[MAX_ARGS]; |
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| 505 | int i; |
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| 506 | int len = strlen(buf); |
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| 507 | |
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| 508 | // build argc/argv |
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| 509 | for (i = 0; i < len; i++) |
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[589] | 510 | { |
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[640] | 511 | if (buf[i] == ' ') |
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| 512 | { |
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| 513 | buf[i] = '\0'; |
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| 514 | } |
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| 515 | else if (i == 0 || buf[i - 1] == '\0') |
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| 516 | { |
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| 517 | if (argc < MAX_ARGS) |
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| 518 | { |
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| 519 | argv[argc] = &buf[i]; |
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| 520 | argc++; |
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| 521 | } |
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| 522 | } |
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[589] | 523 | } |
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[640] | 524 | |
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| 525 | if (argc > 0) |
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[589] | 526 | { |
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[640] | 527 | int found = 0; |
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| 528 | |
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| 529 | // try to match typed command with built-ins |
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| 530 | for (i = 0; cmd[i].name; i++) |
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| 531 | { |
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| 532 | if (strcmp(argv[0], cmd[i].name) == 0) |
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| 533 | { |
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| 534 | // invoke |
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| 535 | cmd[i].fn(argc, argv); |
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| 536 | found = 1; |
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| 537 | break; |
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| 538 | } |
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| 539 | } |
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| 540 | |
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| 541 | if (!found) |
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| 542 | { |
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[643] | 543 | giet_tty_printf("undefined command %s\n", argv[0]); |
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[640] | 544 | } |
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[589] | 545 | } |
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[640] | 546 | } |
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[589] | 547 | |
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[643] | 548 | //////////////////// |
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[640] | 549 | static void prompt() |
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| 550 | { |
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| 551 | giet_tty_printf("# "); |
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| 552 | } |
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| 553 | |
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| 554 | ////////////////////////////////////////// |
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| 555 | __attribute__ ((constructor)) void main() |
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| 556 | ////////////////////////////////////////// |
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| 557 | { |
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| 558 | char c; |
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| 559 | char buf[BUF_SIZE]; |
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| 560 | int count = 0; |
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| 561 | |
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[669] | 562 | // get a private TTY |
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| 563 | giet_tty_alloc( 0 ); |
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[708] | 564 | giet_tty_printf( "~~~ shell ~~~\n\n" ); |
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[669] | 565 | |
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[782] | 566 | // heap initialisation |
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| 567 | unsigned int x_id; // x cluster coordinate |
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| 568 | unsigned int y_id; // y cluster coordinate |
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| 569 | unsigned int p_id; // local processor index |
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| 570 | giet_proc_xyp( &x_id , &y_id , &p_id ); |
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| 571 | heap_init( x_id , y_id ); |
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| 572 | |
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[669] | 573 | // display first prompt |
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[640] | 574 | prompt(); |
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| 575 | |
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| 576 | while (1) |
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[589] | 577 | { |
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[640] | 578 | giet_tty_getc(&c); |
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| 579 | |
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| 580 | switch (c) |
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| 581 | { |
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[747] | 582 | case '\b': // backspace |
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[640] | 583 | if (count > 0) |
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| 584 | { |
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| 585 | giet_tty_printf("\b \b"); |
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| 586 | count--; |
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| 587 | } |
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| 588 | break; |
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[747] | 589 | case '\n': // new line |
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[640] | 590 | giet_tty_printf("\n"); |
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| 591 | if (count > 0) |
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| 592 | { |
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| 593 | buf[count] = '\0'; |
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[703] | 594 | parse((char*)&buf); |
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[640] | 595 | } |
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| 596 | prompt(); |
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| 597 | count = 0; |
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| 598 | break; |
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[747] | 599 | case '\t': // tabulation |
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[640] | 600 | // do nothing |
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| 601 | break; |
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[747] | 602 | case '\03': // ^C |
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[640] | 603 | giet_tty_printf("^C\n"); |
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| 604 | prompt(); |
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| 605 | count = 0; |
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| 606 | break; |
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[747] | 607 | default: // regular character |
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[640] | 608 | if (count < sizeof(buf) - 1) |
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| 609 | { |
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| 610 | giet_tty_printf("%c", c); |
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| 611 | buf[count] = c; |
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| 612 | count++; |
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| 613 | } |
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| 614 | } |
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[589] | 615 | } |
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| 616 | } // end main() |
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| 617 | |
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| 618 | // Local Variables: |
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[640] | 619 | // tab-width: 4 |
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| 620 | // c-basic-offset: 4 |
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[589] | 621 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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| 622 | // indent-tabs-mode: nil |
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| 623 | // End: |
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[640] | 624 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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[589] | 625 | |
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