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Fixed up help messages.

This commit is contained in:
Daniel Beer 2010-01-15 14:06:21 +13:00
parent ee4deeb3fb
commit c9697ab25c
1 changed files with 37 additions and 7 deletions
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44
main.c
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@ -624,7 +624,7 @@ static const struct command all_commands[] = {
" an argument, displays help for that command.\n"},
{"hexout", cmd_hexout,
"hexout <address> <length> <filename.hex>\n"
" Save a region of memory into an HEX file.\n"},
" Save a region of memory into a HEX file.\n"},
{"md", cmd_md,
"md <address> <length>\n"
" Read the specified number of bytes from memory at the given address,\n"
@ -633,8 +633,9 @@ static const struct command all_commands[] = {
"nosyms\n"
" Clear the symbol table.\n"},
{"prog", cmd_prog,
"prog <filename.hex>\n"
" Erase the device and flash the data contained in a binary file.\n"},
"prog <filename>\n"
" Erase the device and flash the data contained in a binary file. This\n"
" command also loads symbols from the file, if available.\n"},
{"regs", cmd_regs,
"regs\n"
" Read and display the current register contents.\n"},
@ -682,11 +683,40 @@ static int cmd_help(char **arg)
fputs(cmd->help, stdout);
} else {
int i;
int max_len = 0;
int rows, cols;
for (i = 0; i < ARRAY_LEN(all_commands); i++) {
int len = strlen(all_commands[i].name);
if (len > max_len)
max_len = len;
}
max_len += 2;
cols = 72 / max_len;
rows = (ARRAY_LEN(all_commands) + cols - 1) / cols;
printf("Available commands:\n");
for (i = 0; i < rows; i++) {
int j;
printf(" ");
for (j = 0; j < cols; j++) {
int k = j * rows + i;
const struct command *cmd = &all_commands[k];
if (k >= ARRAY_LEN(all_commands))
break;
printf("%s", cmd->name);
for (k = strlen(cmd->name); k < max_len; k++)
printf(" ");
}
printf("\n");
}
printf("Available commands:");
for (i = 0; i < ARRAY_LEN(all_commands); i++)
printf(" %s", all_commands[i].name);
printf("\n");
printf("Type \"help <command>\" for more information.\n");
printf("Press Ctrl+D to quit.\n");
}