149 lines
4.5 KiB
C
149 lines
4.5 KiB
C
//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Desc: Kernel shell //
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// //
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// //
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// Copyright © 2018-2019 The OS/K Team //
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// //
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// This file is part of OS/K. //
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// //
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// OS/K is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 3 of the License, or //
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// any later version. //
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// //
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// OS/K is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY//without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
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#include "shell.h"
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int shcol = VGA_COLOR_LIGHT_GREY;
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int shargc = 0;
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char *argvbuf = 0;
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char **shargv = 0;
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void ExecuteCommand(char *cmdbuf)
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{
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error_t rc;
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Command_t *cmd;
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bool found = false;
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if (!cmdbuf || !*cmdbuf)
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return;
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memzero(*shargv, ARG_MAX);
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rc = KalCmdLineToArgVec(cmdbuf, &shargc, argvbuf);
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if (rc) KeStartPanic("Shell: Couldn't parse command line: %d", rc);
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for (cmd = cmdtable; cmd->name != NULL; cmd++) {
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if (!strcmp(cmd->name, shargv[0])) {
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cmd->func(shargc, shargv, cmdbuf);
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found = true;
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break;
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}
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}
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assert(shargv[0] == argvbuf + ARG_MAX);
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if (found == false) {
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KernLog("err: command not found: '%.255s' (%ld)\n",
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shargv[0], strlen(shargv[0]));
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}
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}
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void KeStartShell(void)
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{
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uchar ch;
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error_t rc;
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char *cmdbuf = malloc(CMDBUFSIZE);
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char *bufptr = cmdbuf;
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argvbuf = malloc(ARG_MAX * 2);
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memzero(argvbuf, ARG_MAX * 2);
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shargv = (char **)argvbuf;
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KernLog("\n%Cshell> ", shcol);
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BFlushBuf(BStdOut);
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while ((rc = BGetFromBuf(BStdIn, &ch)) == EOK || rc == EENDF) {
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// Reset BStdIn's content
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if (rc == EENDF) {
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if (!(BStdIn->flags & BF_ERR)) {
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*bufptr = 0;
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bufptr = cmdbuf;
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ExecuteCommand(cmdbuf);
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memzero(cmdbuf, CMDBUFSIZE);
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BFlushBuf(BStdIn);
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KernLog("%Cshell> ", shcol);
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BFlushBuf(BStdOut);
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}
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else break;
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}
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switch (ch) {
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case KEY_BS:
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*bufptr = 0;
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if (bufptr > cmdbuf) {
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bufptr--;
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}
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break;
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case KEY_BEL:
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if (rand() % 16 == 0) {
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IoDoStarWars();
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}
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else IoDoBeep();
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break;
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case KEY_DC1:
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IoScrollUp();
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break;
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case KEY_DC2:
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IoScrollDown();
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break;
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case KEY_ESC:
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PoShutdown();
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break;
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default:
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*bufptr++ = (char)ch;
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// End of buffer?
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if (bufptr != cmdbuf+CMDBUFSIZE-1) {
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break; // No
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}
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KernLog("\n");
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// Else, fallthrough to case '\n'
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case '\n':
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*bufptr = 0;
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bufptr = cmdbuf;
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ExecuteCommand(cmdbuf);
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memzero(cmdbuf, CMDBUFSIZE);
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KernLog("%Cshell> ", shcol);
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BFlushBuf(BStdIn);
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BFlushBuf(BStdOut);
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break;
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}
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KePauseCPU();
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}
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KernLog("[EOI]\n");
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}
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