Simple embedded shell with runtime pluggable commands.
Implements a simple unix-like shell for embedded systems with a pluggable command architecture.
SimpleShell.cpp
- Committer:
- shimniok
- Date:
- 2018-12-01
- Revision:
- 0:49820d5a38c9
- Child:
- 1:998a7ed04f10
File content as of revision 0:49820d5a38c9:
#include "SimpleShell.h" SimpleShell::SimpleShell() { } void SimpleShell::run() { bool done=false; strcpy(_cwd, "/log"); printf("Type help for assistance.\n"); while (!done) { printPrompt(); readCommand(); //this.doCommand(cmdline); } puts("exiting shell\n"); return; } void SimpleShell::printPrompt() { fputc('(', stdout); fputs(_cwd, stdout); fputs(")# ", stdout); } void SimpleShell::readCommand() { int i=0; char c; bool done = false; memset(cmd, 0, MAXBUF); do { cmd[i] = 0; c = fgetc(stdin); if (c == '\r') { // if return is hit, we're done, don't add \r to cmd done = true; } else if (i < MAXBUF-1) { if (c == 0x7f || c == '\b') { // backspace or delete if (i > 0) { // if we're at the beginning, do nothing i--; fputs("\b \b", stdout); } } else { fputc(c, stdout); cmd[i++] = c; } } } while (!done); fputc('\n', stdout); }