Merge of Fredrik Hultin command_line

src/Makefile

@@ -91,6 +91,7 @@ CFLAGS		+= -I include -I arch/$(ARCH)/include -I . -DARCH=$(ARCH)
 CFLAGS		+= -Os -ffreestanding
 CFLAGS		+= -Wall -W
 CFLAGS		+= -g
+CFLAGS		+= -DCONSOLE_DUAL -DCOMCONSOLE=0x3F8 -DCONSPEED=9600
 CFLAGS		+= $(EXTRA_CFLAGS)
 ASFLAGS		+= $(EXTRA_ASFLAGS)
 LDFLAGS		+= $(EXTRA_LDFLAGS)
@@ -145,6 +146,8 @@ SRCDIRS		+= interface/pxe
 SRCDIRS		+= tests
 SRCDIRS		+= crypto
 SRCDIRS		+= hci/mucurses
+SRCDIRS		+= commandline
+SRCDIRS		+= commandline/commands
 
 # NON_AUTO_SRCS lists files that are excluded from the normal
 # automatic build system.

src/commandline/cmdline.c

@@ -0,0 +1,81 @@
+#include <console.h>
+#include "etherboot.h"
+#include "cmdline.h"
+#include "cmdlinelib.h"
+#include "cmdlist.h"
+
+
+#define CMDL_DELAY (2000 * TICKS_PER_SEC) / 1000;
+
+void cmdl_exec_cmdline();
+char cmdl_spin();
+
+void cmdl_start()
+{
+	unsigned int stop;
+	//int spin;
+
+	//printf("gPXE %s (GPL) etherboot.org ...  ", VERSION);
+	printf("gPXE %s (GPL) etherboot.org\n", VERSION);
+
+	stop = currticks() + CMDL_DELAY;
+	
+	while(currticks() < stop){
+	
+		/*if(spin++ % 250 == 0){
+			putchar(8);
+			putchar(cmdl_spin());
+		}*/
+		
+		if(iskey()){
+			if(getchar() == 2){
+				putchar('\n');
+				cmdl_exec_cmdline();
+				break;
+			}else{
+				putchar('\n');
+				printf("Skipping command line.\n");
+				break;
+			}
+		}
+	}
+	putchar('\n');
+
+	// empty the input buffer
+	while(iskey()) {
+		getchar();
+	}
+}
+
+/*char cmdl_spin()
+{
+	static int state;*/
+	//int spinner[4] = {'-', '\\', '|', '/'}; <- undefined reference to memcpy!
+/*	int spinner[4];
+	
+	spinner[0] = '-';
+	spinner[1] = '\\';
+	spinner[2] = '|';
+	spinner[3] = '/';
+
+	return spinner[state++ % 4];
+}*/
+
+void cmdl_exec_cmdline(){
+	cmd_line* cmd;
+	cmd = cmdl_create();
+	
+	cmdl_setputchar(cmd, putchar);
+	cmdl_setgetchar(cmd, getchar);
+	cmdl_setprintf(cmd, printf);
+
+	cmdl_setpropmt(cmd, "gPXE>");
+
+	printf("Welcome to Etherboot\n\n");
+
+
+	cmdl_enterloop(cmd);
+
+	cmdl_free(cmd);
+}
+

src/commandline/cmdlinelib.c

@@ -0,0 +1,564 @@
+#include "cmdlinelib.h"
+#include "command.h"
+#include <gpxe/tables.h>
+#include <console.h>
+#include <malloc.h>
+#include <string.h>
+#include <stdarg.h>
+
+static struct command cmd_start[0] __table_start ( commands );
+static struct command cmd_end[0] __table_end ( commands );
+
+void cmdl_setgetchar(cmd_line* cmd, cmdl_getchar_t in)
+{
+	cmd->getchar = in;
+}
+
+void cmdl_setputchar(cmd_line* cmd, cmdl_putchar_t in)
+{
+	cmd->putchar = in;
+}
+
+void cmdl_setprintf(cmd_line* cmd, cmdl_printf_t in)
+{
+	cmd->printf = in;
+}
+      
+int cmdl_getexit(cmd_line* cmd)
+{
+	if(cmdl_check(cmd) && !cmd->exit){
+		return 0;
+	}else{
+		return 1;
+	}
+
+}
+
+void cmdl_setexit(cmd_line* cmd, int exit)
+{
+	if(cmdl_check(cmd)){
+		cmd->exit = exit;
+	}
+}
+
+int cmdl_printf(cmd_line* cmd, const char *format, ...)
+{
+	int ret;
+        char string[CMDL_BUFFER_SIZE];
+        va_list ap;
+
+        va_start(ap, format);
+        ret = vsprintf(string, format, ap);
+        cmdl_addstr(cmd, string);
+        va_end(ap);
+        return ret;
+}
+
+void cmdl_addstr(cmd_line* cmd, char* str)
+{
+	unsigned int i;
+	for(i = 0; i < strlen(str); i++){
+		cmdl_addchar(cmd, str[i]);
+	}
+}
+
+/*void cmdl_addoutput_str(cmd_line* cmd, char output[CMDL_OUTPUT_SIZE])
+{
+	if(cmdl_check(cmd) && output != NULL){
+		if(!cmd->has_output){
+			cmdl_clearoutput(cmd);
+		}
+		strncat(cmd->output, output, CMDL_OUTPUT_SIZE);
+		cmd->has_output = 1;
+	}
+}*/
+
+/*char* cmdl_getoutput(cmd_line* cmd)
+{
+	if(cmdl_check(cmd) && cmd->has_output){
+		cmd->has_output = 0;
+		return cmd->output;
+	}else{
+		return "";
+	}
+}*/
+
+void cmdl_setpropmt(cmd_line* cmd, char prompt[CMDL_PROMPT_SIZE])
+{
+	if(cmdl_check(cmd) && prompt != NULL){
+		strncat(cmd->prompt, prompt, CMDL_PROMPT_SIZE);
+	}
+}
+
+char *cmdl_getprompt(cmd_line* cmd)
+{
+	if(cmdl_check(cmd)){
+		return cmd->prompt;
+	}else{
+		return "";
+	}
+}
+
+char* cmdl_getbuffer(cmd_line* cmd){
+	if(cmdl_check(cmd)){
+		return cmd->buffer;
+	}else{
+		return "";
+	}
+}
+
+void cmdl_enterloop(cmd_line* cmd)
+{
+	while(!cmdl_getexit(cmd)){
+		if(cmd->refresh){
+			cmd->printf("%s %s", cmd->prompt, cmd->buffer);
+			cmd->refresh = 0;
+		}
+//		cmd->printf("Got %d\n", cmd->getchar());
+		cmdl_parsechar(cmd, cmd->getchar());
+	}
+}
+
+void cmdl_addreplace(cmd_line* cmd, char in)
+{
+	if(cmd->cursor < CMDL_BUFFER_SIZE - 2){
+		cmd->buffer[cmd->cursor] = in;
+		cmd->cursor++;
+		cmd->putchar((int)in);
+	}
+}
+
+void cmdl_addinsert(cmd_line* cmd, char in)
+{
+	int i;
+	int to;
+	if(cmd->cursor < CMDL_BUFFER_SIZE - 2 && cmd->cursor >= 0){
+		if(strlen(cmd->buffer) < CMDL_BUFFER_SIZE - 2){
+			to = strlen(cmd->buffer);
+		}else{
+			to = CMDL_BUFFER_SIZE - 2;
+		}
+			for(i=to; i > cmd->cursor; i--){
+				cmd->buffer[i] = cmd->buffer[i-1];
+			}
+			cmd->buffer[cmd->cursor] = in;
+
+			for(i=cmd->cursor; i < to; i++){
+				cmd->putchar(cmd->buffer[i]);
+			}
+			
+			for(i=cmd->cursor; i < to - 1; i++){
+				cmd->putchar(CMDLK_BS);
+			}
+			cmd->cursor++;
+			//cmdl_movecursor(cmd, CMDL_RIGHT);
+	}
+}
+
+void cmdl_addchar(cmd_line* cmd, char in){
+	if(cmd->insert){
+		cmdl_addinsert(cmd, in);
+	}else{
+		cmdl_addreplace(cmd, in);
+	}
+}
+
+void cmdl_parsechar(cmd_line* cmd, char in)
+{
+	if(cmdl_check(cmd)){
+		if(in >= 32){
+			cmdl_addchar(cmd, in);
+		}else{
+			switch(in){
+				case CMDLK_BS:
+					if(cmdl_movecursor(cmd, CMDL_LEFT)){
+						cmdl_del(cmd);
+					}
+					break;
+
+				case CMDLK_RETURN:
+					cmd->putchar('\n');
+					cmdl_exec(cmd);
+					cmd->refresh = 1;
+					break;
+
+				case CMDLK_BW:
+					cmdl_movecursor(cmd, CMDL_LEFT);
+					break;
+
+				case CMDLK_FW:
+					//cmdl_movecursor(cmd, CMDL_RIGHT);
+					break;
+				
+				case CMDLK_TAB:
+					cmdl_tabcomplete(cmd);
+					break;
+
+			}
+		}
+	}
+}
+
+void cmdl_tabcomplete(cmd_line *cmd)
+{
+	struct command *ccmd;
+	int count=0;
+	char* result[CMDL_MAX_TAB_COMPLETE_RESULT];
+
+	for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
+		if(!strncmp(ccmd->name, cmd->buffer, strlen(cmd->buffer))){
+			if(count <= CMDL_MAX_TAB_COMPLETE_RESULT){
+				result[count++] = (char*)(ccmd->name);
+			}
+		}
+	}
+	
+
+	if( count == 1 ){
+		cmdl_addstr(cmd, (char*)(result[0] + strlen(cmd->buffer)));
+		cmd->tabstate = 0;
+		cmdl_addchar(cmd, ' ');
+	} else if( count > 1 ) {
+		int i, i2, minlen=CMDL_BUFFER_SIZE, same=1;
+		char last;
+
+		for(i = 0; i < count; i ++) {
+			if(minlen > (int)strlen( result[i] ) ){
+				minlen = strlen(result[i]);
+			}
+		
+		}
+		if((int)strlen(cmd->buffer) < minlen){
+			for(i = strlen(cmd->buffer); i < minlen; i++){
+				last = result[0][i];
+				for(i2 = 1; i2 < count; i2 ++) {
+					if(result[i2][i] != last){
+						same = 0;
+						break;
+					}
+				}
+				if(same){
+					cmdl_addchar(cmd, last);
+				}
+				
+			}
+		}
+		cmd->tabstate++;
+	}
+	
+	if(count > 1 && cmd->tabstate > 1){
+		int i;
+		cmd->tabstate = 0;
+		cmd->refresh = 1;
+		cmd->putchar('\n');
+		for(i = 0; i < count; i ++){
+			cmd->printf("%s\t", result[i]);
+		}
+		cmd->putchar('\n');
+	}
+
+	
+
+}
+
+
+void cmdl_exec(cmd_line* cmd)
+{
+	cmdl_param_list* params;
+	int unknown=1;
+	struct command *ccmd;
+
+	params = cmdl_getparams(cmd->buffer);
+	
+	if(params == NULL){
+		cmdl_clearbuffer(cmd);
+		return;
+	}
+
+	if(params->argc > 0){
+		if(!strcmp(params->argv[0], "exit") || !strcmp(params->argv[0], "quit")){
+			cmdl_setexit(cmd, 1);
+/*		}else if(!strcmp(params->argv[0], "help")){
+			if(params->argc > 1){
+				cmdl_builtin_help(cmd, params->argv[1]);
+			}else{
+				cmdl_builtin_help(cmd, "");
+			}*/
+		}else{
+			for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
+				if(!strcmp(ccmd->name, params->argv[0])){
+					unknown = 0;
+					ccmd->exec(params->argc, params->argv);
+					break;
+				}
+			}
+			if(unknown){
+				cmd->printf("%s: unknown command\n", params->argv[0]);
+			}
+		}
+	}
+
+	free(params);	
+	cmdl_clearbuffer(cmd);
+}
+
+/*void cmdl_builtin_help(cmd_line* cmd, char* command){
+	struct command *ccmd;
+	int unknown = 1;
+	if(strcmp(command, "") == 0){
+		cmd->printf("Built in commands:\n\n\thelp\t\tCommand usage help (\"help help\" for more info)\n\texit, quit\t\tExit the command line and boot\n\nCompiled in commands:\n\n");
+
+		for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
+			cmd->printf ("\t%s\t\t%s\n", ccmd->name, ccmd->desc );
+		}
+	}else{
+		if(!strcmp(command, "help")){
+			cmd->printf("help - The help command\n\nUsage: help <command>\n\n\tExample:\n\t\thelp help\n");
+		}else if(!strcmp(command, "exit") || !strcmp(command, "quit")){
+			cmd->printf("exit, quit - The quit command\n\nUsage:\nquit or exit\n\n\tExample:\n\t\texit\n");
+		}else{
+			for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
+				if(!strcmp(ccmd->name, command)){
+					unknown = 0;
+					cmd->printf ("\t%s - %s\n\nUsage:\n%s\n", ccmd->name, ccmd->desc, ccmd->usage );
+					break;
+				}
+				if(unknown){
+					cmd->printf("\"%s\" isn't compiled in (does it exist?).\n", command);
+				}
+			}
+		}
+		
+	}
+}*/
+
+cmdl_param_list* cmdl_getparams(const char* command){
+	cmdl_param_list* this;
+	char *result = NULL;
+	int count=0;
+	char *command2;
+	
+	this = (cmdl_param_list*)malloc(sizeof(cmdl_param_list));
+	
+	if(this == NULL){
+		return NULL;
+	}
+
+	command2 = malloc(strlen(command) + 1);
+	
+	this->argc=0;
+
+	strcpy(command2, command);
+	result = strtok(command2, " ");
+	
+	while( result != NULL ) {
+		this->argc++;
+		result = strtok( NULL, " ");
+	}
+	
+	this->argv = (char**)malloc(sizeof(char*) * this->argc);
+	if(this->argv == NULL){
+		free(this);
+		return NULL;
+	}
+	
+	
+	strcpy(command2, command);
+	result = strtok(command2, " ");
+	
+	while( result != NULL && this->argc > count) {
+		this->argv[count] = (char*)malloc(sizeof(char) * (strlen(result) + 1));
+		if(this->argv[count] == NULL){
+			free(this);
+			return NULL;
+		}
+		strcpy(this->argv[count], result);
+		count++;
+		result = strtok( NULL, " ");
+	}   
+	free(command2);	
+	return this;
+}
+
+/*char* cmdl_parse_getcmd(cmd_line* cmd){
+	int i;
+	char* ret;
+	ret = (char*)malloc(1);
+	ret[0] = 0;
+
+	for(i=0; i < CMDL_BUFFER_SIZE - 1; i++){
+		if(cmd->buffer[i + 1] == ' ' || cmd->buffer[i + 1] == '\0'){
+			free(ret);
+			ret = (char*)malloc(i+1);
+			strncat(ret, cmd->buffer, i+1);
+			break;
+		}
+	}
+	return ret;
+}*/
+
+void cmdl_clearbuffer(cmd_line* cmd)
+{
+	if(cmdl_check(cmd)){
+		int i;
+		cmd->cursor = 0;
+		for(i=0; i < CMDL_BUFFER_SIZE; i++){
+			cmd->buffer[i] = 0;
+		}
+	}
+}
+
+/*void cmdl_clearoutput(cmd_line* cmd)
+{
+	if(cmdl_check(cmd)){
+		int i;
+		for(i=0; i < CMDL_OUTPUT_SIZE; i++){
+			cmd->output[i] = 0;
+		}
+	}
+}*/
+
+int cmdl_movecursor(cmd_line* cmd, int direction)
+{
+	if(cmdl_check(cmd)){
+		switch(direction){
+			case CMDL_LEFT:
+				if(cmd->cursor > 0){
+					cmd->cursor--;
+					cmd->putchar(CMDLK_BS);
+				}else{
+					return 0;
+				}
+				break;
+			case CMDL_RIGHT:
+				if(cmd->cursor < CMDL_BUFFER_SIZE - 2){
+					cmd->cursor++;
+					cmd->putchar(' ');
+				}else{
+					return 0;
+				}
+				break;
+		}
+	}
+	return 1;
+}
+
+void cmdl_del(cmd_line* cmd)
+{
+	if(cmdl_check(cmd) && cmd->cursor < CMDL_BUFFER_SIZE - 2 && cmd->cursor >= 0){
+		int i;
+		for(i = cmd->cursor; i < (int)strlen(cmd->buffer); i++){
+			cmd->buffer[i] = cmd->buffer[i + 1];
+			if(!cmd->buffer[i]){
+				cmd->putchar(' ');
+			}else{
+				cmd->putchar(cmd->buffer[i]);
+			}
+		}
+		for(i = cmd->cursor; i < (int)strlen(cmd->buffer) + 1; i++){
+			cmd->putchar(CMDLK_BS);
+		}
+	}
+}
+
+
+int cmdl_check(cmd_line* cmd)
+{
+	if(
+		cmd != NULL && 
+		cmd->buffer != NULL &&
+		cmd->prompt != NULL &&
+		cmd->cursor >= 0 && 
+		cmd->cursor < CMDL_BUFFER_SIZE - 1 &&
+		cmd->buffer[CMDL_BUFFER_SIZE - 1] == 0 &&
+		cmd->prompt[CMDL_PROMPT_SIZE - 1] == 0
+	){
+		return 1;
+	}else{
+		return 0;
+	}
+}
+
+cmd_line* cmdl_create()
+{
+	cmd_line* this;
+	int i;
+	
+	/* Initiate the command line */
+	
+	this = (cmd_line*)malloc(sizeof(cmd_line));
+	
+	if(this == NULL){
+		return NULL;
+	}
+	
+
+	/* Allocate output buffer */
+	
+	/*this->output = (char*)malloc(CMDL_OUTPUT_SIZE);
+	if(this->output == NULL){
+		free(this);
+		return NULL;
+	}*/
+	
+/*	for(i = 0; i < CMDL_OUTPUT_SIZE; i++){
+		this->output[i] = 0;
+	}*/
+
+	/* Allocate command line buffer */
+	
+	this->buffer = (char*)malloc(CMDL_BUFFER_SIZE);
+	if(this->buffer == NULL){
+		free(this);
+		return NULL;
+	}
+	
+	for(i = 0; i < CMDL_BUFFER_SIZE; i++){
+		this->buffer[i] = 0;
+	}
+	
+	/* Allocate prompt buffer */
+	
+	this->prompt = (char*)malloc(CMDL_PROMPT_SIZE);
+	if(this->prompt == NULL){
+		free(this);
+		return NULL;
+	}
+	
+	for(i = 0; i < CMDL_PROMPT_SIZE; i++){
+		this->prompt[i] = 0;
+	}
+	
+	/* Initiate cursor position etc.*/
+	
+	this->cursor = 0;
+	//this->has_output = 0;
+	this->exit = 0;
+	this->refresh = 1;
+	this->tabstate = 0;
+	this->insert = 0;
+
+	/* set callbacks to NULL */
+
+	this->getchar = NULL;
+	this->putchar = NULL;
+	this->printf = NULL;
+
+	/* List the commands */
+
+	struct command *cmd;
+
+	printf ( "Compiled in commands: ");
+	for ( cmd = cmd_start ; cmd < cmd_end ; cmd++ ) {
+		printf("%s ", cmd->name);
+	}
+	printf("\n");
+
+	return this;
+}
+
+void cmdl_free(cmd_line* cmd)
+{
+	free(cmd);
+}
+

src/commandline/commands/help.c

@@ -0,0 +1,48 @@
+#include "command.h"
+#include "console.h"
+#include <string.h>
+#include <gpxe/tables.h>
+
+static struct command cmd_start[0] __table_start ( commands );
+static struct command cmd_end[0] __table_end ( commands );
+
+void help_req(){}
+
+static int cmd_help_exec ( int argc, char **argv ) {
+
+	struct command *ccmd;
+	int unknown = 1;
+	if(argc == 1){
+		printf("Built in commands:\n\n\texit, quit\t\tExit the command line and boot\n\nCompiled in commands:\n\n");
+
+		for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
+			printf ("\t%s\t\t%s\n", ccmd->name, ccmd->desc );
+		}
+	}else{
+		if(!strcmp(argv[1], "exit") || !strcmp(argv[1], "quit")){
+			printf("exit, quit - The quit command\n\nUsage:\nquit or exit\n\n\tExample:\n\t\texit\n");
+		}else{
+			for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
+				if(!strcmp(ccmd->name, argv[1])){
+					unknown = 0;
+					printf ("\t%s - %s\n\nUsage:\n%s\n", ccmd->name, ccmd->desc, ccmd->usage );
+					break;
+				}
+			}
+			if(unknown){
+				printf("\"%s\" isn't compiled in (does it exist?).\n", argv[1]);
+			}
+		}
+		
+	}
+	return 0;
+}
+
+struct command help_command __command = {
+	.name = "help",
+	.usage = "help <command>\n\n\tExample:\n\t\thelp help\n",
+	.desc = "The help command",
+	.exec = cmd_help_exec,
+};
+
+

src/commandline/commands/test.c

@@ -0,0 +1,22 @@
+#include "command.h"
+#include "console.h"
+
+void test_req(){}
+
+static int cmd_test_exec ( int argc, char **argv ) {
+	int i;
+
+	printf("Hello, world!\nI got the following arguments passed to me: \n");
+	for(i = 0; i < argc; i++){
+		printf("%d: \"%s\"\n", i, argv[i]);
+	}
+	return 0;
+}
+
+struct command test_command __command = {
+	.name = "test",
+	.usage = "A test command\nIt does nothing at all\n\nExample:\n\ttest",
+	.desc = "Does nothing",
+	.exec = cmd_test_exec,
+};
+

src/commandline/commands/test2.c

@@ -0,0 +1,22 @@
+#include "command.h"
+#include "console.h"
+
+void test2_req(){}
+
+static int cmd_test2_exec ( int argc, char **argv ) {
+	int i;
+
+	printf("Hello, world!\nI got the following arguments passed to me: \n");
+	for(i = 0; i < argc; i++){
+		printf("%d: \"%s\"\n", i, argv[i]);
+	}
+	return 0;
+}
+
+struct command test2_command __command = {
+	.name = "test2",
+	.usage = "A test command\nIt does nothing at all\n\nExample:\n\ttest2",
+	.desc = "Does nothing",
+	.exec = cmd_test2_exec,
+};
+

src/core/cmdline.c

@@ -0,0 +1,31 @@
+#include "cmdline.h"
+#include "cmdlinelib.h"
+#include <console.h>
+
+void cmdl_start()
+{
+	cmd_line* cmd;
+	
+	cmd = cmdl_create();
+	
+	cmdl_setpropmt(cmd, "?>");
+
+	cmdl_printf(cmd, "Welcome to Etherboot\n\n");
+	
+	while(!cmdl_getexit(cmd)){
+		int i;
+		
+		printf("%s%s %s", cmdl_getoutput(cmd), cmdl_getprompt(cmd), cmdl_getbuffer(cmd));
+		
+		cmdl_addchar(cmd, getchar());
+		
+		/* TODO HACK temporary clear line */
+		putchar(0xd);
+		for(i=0; i < 79; i++){
+			putchar(0x20);
+		}
+		putchar(0xd);
+	}
+	cmdl_free(cmd);
+}
+

src/core/cmdlinelib.c

@@ -0,0 +1,272 @@
+#include "cmdlinelib.h"
+#include <console.h>
+#include <malloc.h>
+#include <string.h>
+#include <stdarg.h>
+
+int cmdl_getexit(cmd_line* cmd)
+{
+	if(cmdl_check(cmd) && !cmd->exit){
+		return 0;
+	}else{
+		return 1;
+	}
+
+}
+
+void cmdl_setexit(cmd_line* cmd, int exit)
+{
+	if(cmdl_check(cmd)){
+		cmd->exit = exit;
+	}
+}
+
+int cmdl_printf(cmd_line* cmd, const char *format, ...)
+{
+	int ret;
+        char string[CMDL_OUTPUT_SIZE];
+        va_list ap;
+
+        va_start(ap, format);
+        ret = vsprintf(string, format, ap);
+        cmdl_addoutput_str(cmd, string);
+        va_end(ap);
+        return ret;
+}
+
+
+void cmdl_addoutput_str(cmd_line* cmd, char output[CMDL_OUTPUT_SIZE])
+{
+	if(cmdl_check(cmd) && output != NULL){
+		if(!cmd->has_output){
+			cmdl_clearoutput(cmd);
+		}
+		strncat(cmd->output, output, CMDL_OUTPUT_SIZE);
+		cmd->has_output = 1;
+	}
+}
+
+char* cmdl_getoutput(cmd_line* cmd)
+{
+	if(cmdl_check(cmd) && cmd->has_output){
+		cmd->has_output = 0;
+		return cmd->output;
+	}else{
+		return "";
+	}
+}
+
+void cmdl_setpropmt(cmd_line* cmd, char prompt[CMDL_PROMPT_SIZE])
+{
+	if(cmdl_check(cmd) && prompt != NULL){
+		strncat(cmd->prompt, prompt, CMDL_PROMPT_SIZE);
+	}
+}
+
+char *cmdl_getprompt(cmd_line* cmd)
+{
+	if(cmdl_check(cmd)){
+		return cmd->prompt;
+	}else{
+		return "";
+	}
+}
+
+char* cmdl_getbuffer(cmd_line* cmd){
+	if(cmdl_check(cmd)){
+		return cmd->buffer;
+	}else{
+		return "";
+	}
+}
+
+void cmdl_addchar(cmd_line* cmd, char in)
+{
+	if(in >= 32){
+		if(cmdl_check(cmd)){
+			cmd->buffer[cmd->cursor] = in;
+			cmdl_movecursor(cmd, CMDL_RIGHT);
+		}
+	}else{
+		switch(in){
+			case 0x08: /* Backspace */
+
+				cmdl_delat(cmd, cmd->cursor);
+				cmdl_movecursor(cmd, CMDL_LEFT);
+				break;
+			case 0x0a:
+			case 0x0d: /* Enter */
+				cmdl_exec(cmd);
+				break;
+		}
+	}
+}
+
+void cmdl_exec(cmd_line* cmd)
+{
+	char* command;
+	cmdl_printf(cmd, "%s %s\n", cmd->prompt, cmd->buffer);
+
+	command = cmdl_parse_getcmd(cmd);
+	if(strlen(command) != 0){
+		if(strcmp(command, "exit") == 0 || strcmp(command, "quit") == 0){
+			cmdl_setexit(cmd, 1);
+		}else if(strcmp(command, "help") == 0){
+			cmdl_printf(cmd, "Don't panic\n");
+		}else{
+			cmdl_printf(cmd, "%s: unknown command\n", command);
+		}
+	}
+	free(command);
+	
+	cmdl_clearbuffer(cmd);
+}
+
+char* cmdl_parse_getcmd(cmd_line* cmd){
+	int i;
+	char* ret;
+	ret = (char*)malloc(1);
+	ret[0] = 0;
+
+	for(i=0; i < CMDL_BUFFER_SIZE - 1; i++){
+		if(cmd->buffer[i + 1] == ' ' || cmd->buffer[i + 1] == '\0'){
+			free(ret);
+			ret = (char*)malloc(i+1);
+			strncat(ret, cmd->buffer, i+1);
+			break;
+		}
+	}
+	return ret;
+}
+
+void cmdl_clearbuffer(cmd_line* cmd)
+{
+	if(cmdl_check(cmd)){
+		int i;
+		cmd->cursor = 0;
+		for(i=0; i < CMDL_BUFFER_SIZE; i++){
+			cmd->buffer[i] = 0;
+		}
+	}
+}
+
+void cmdl_clearoutput(cmd_line* cmd)
+{
+	if(cmdl_check(cmd)){
+		int i;
+		for(i=0; i < CMDL_OUTPUT_SIZE; i++){
+			cmd->output[i] = 0;
+		}
+	}
+}
+
+void cmdl_movecursor(cmd_line* cmd, int direction)
+{
+	if(cmdl_check(cmd)){
+		switch(direction){
+			case CMDL_LEFT:
+				if(cmd->cursor > 0){
+					cmd->cursor--;
+				}
+				break;
+			case CMDL_RIGHT:
+				if(cmd->cursor < CMDL_BUFFER_SIZE - 1){
+					cmd->cursor++;
+				}
+				break;
+		}
+	}
+}
+
+void cmdl_delat(cmd_line* cmd, int at)
+{
+	if(cmdl_check(cmd) && at < CMDL_BUFFER_SIZE - 1 && at >= 0){
+		int i;
+		for(i = at; i < CMDL_BUFFER_SIZE - 1; i++){
+			cmd->buffer[i] = cmd->buffer[i + 1];
+		}
+	}
+}
+
+
+int cmdl_check(cmd_line* cmd)
+{
+	if(
+		cmd != NULL && 
+		cmd->buffer != NULL &&
+		cmd->prompt != NULL &&
+		cmd->cursor >= 0 && 
+		cmd->cursor < CMDL_BUFFER_SIZE - 1 &&
+		cmd->buffer[CMDL_BUFFER_SIZE - 1] == 0 &&
+		cmd->prompt[CMDL_PROMPT_SIZE - 1] == 0
+	){
+		return 1;
+	}else{
+		return 0;
+	}
+}
+
+cmd_line* cmdl_create()
+{
+	cmd_line* this;
+	int i;
+	
+	// Initiate the command line
+	
+	this = (cmd_line*)malloc(sizeof(cmd_line));
+	
+	if(this == NULL){
+		return NULL;
+	}
+	
+
+	/* Allocate output buffer */
+	
+	this->output = (char*)malloc(CMDL_OUTPUT_SIZE);
+	if(this->output == NULL){
+		free(this);
+		return NULL;
+	}
+	
+	for(i = 0; i < CMDL_OUTPUT_SIZE; i++){
+		this->output[i] = 0;
+	}
+
+	/* Allocate command line buffer */
+	
+	this->buffer = (char*)malloc(CMDL_BUFFER_SIZE);
+	if(this->buffer == NULL){
+		free(this);
+		return NULL;
+	}
+	
+	for(i = 0; i < CMDL_BUFFER_SIZE; i++){
+		this->buffer[i] = 0;
+	}
+	
+	/* Allocate prompt buffer */
+	
+	this->prompt = (char*)malloc(CMDL_PROMPT_SIZE);
+	if(this->prompt == NULL){
+		free(this);
+		return NULL;
+	}
+	
+	for(i = 0; i < CMDL_PROMPT_SIZE; i++){
+		this->prompt[i] = 0;
+	}
+	
+	/* Initiate cursor position */
+	
+	this->cursor = 0;
+	this->has_output = 0;
+	this->exit = 0;
+	
+	return this;
+}
+
+void cmdl_free(cmd_line* cmd)
+{
+	free(cmd);
+}
+

src/core/main.c

@@ -22,6 +22,7 @@ Literature dealing with the network protocols:
 #include "disk.h"
 #include "timer.h"
 #include "cpu.h"
+#include "cmdline.h"
 #include "console.h"
 #include <gpxe/init.h>
 #include "image.h"
@@ -155,6 +156,8 @@ int main ( void ) {
 	netdev = next_netdev ();
 	if ( netdev ) {
 		test_dhcp ( netdev );
+		//cmdl_start();
+		//test_aoeboot ( &static_single_netdev );
 	} else {
 		printf ( "No network device found\n" );
 	}

src/include/cmdline.h

@@ -0,0 +1,8 @@
+#ifndef CMDLINE_H
+#define CMDLINE_H
+
+/* Command line external functions */
+
+void cmdl_start();
+
+#endif

src/include/cmdlinelib.h

@@ -0,0 +1,99 @@
+/* Command line library */
+#ifndef CMDLINELIB_H
+#define CMDLINELIB_H
+
+#define CMDL_BUFFER_SIZE 256
+//#define CMDL_OUTPUT_SIZE 256
+#define CMDL_PROMPT_SIZE 8
+#define CMDL_MAX_TAB_COMPLETE_RESULT 256
+
+typedef int (*cmdl_putchar_t)(int);
+typedef int (*cmdl_printf_t)( const char *format, ... );
+typedef int (*cmdl_getchar_t)();
+
+#ifndef NULL
+#define NULL    ((void *)0)
+#endif
+
+enum{
+	CMDL_LEFT,
+	CMDL_RIGHT
+};
+
+enum{
+	CMDLK_FW=6,
+	CMDLK_BW=2,
+	CMDLK_BS=8,
+	CMDLK_HOME=2,
+	CMDLK_END=5,
+	CMDLK_DELTOEND=11,
+	CMDLK_DELARG=23,
+	CMDLK_ENTER=0x0d,
+	CMDLK_RETURN=0x0a,
+	CMDLK_TAB=9
+};
+
+typedef struct{
+	
+	// buffers
+
+	//char* output;
+	char* buffer;
+	char* prompt;
+
+	// options and values
+
+	int cursor;
+	//int has_output;
+	int exit;
+	int refresh;
+	int tabstate;
+	int insert;
+
+	// callbacks
+	
+	cmdl_putchar_t putchar;
+	cmdl_getchar_t getchar;
+	cmdl_printf_t printf;
+
+}cmd_line;
+
+typedef struct{
+	int argc;
+	char **argv;
+}cmdl_param_list;
+
+void cmdl_setputchar(cmd_line* cmd, cmdl_putchar_t in);
+void cmdl_setgetchar(cmd_line* cmd, cmdl_getchar_t in);
+void cmdl_setprintf(cmd_line* cmd, cmdl_printf_t in);
+
+//void cmdl_builtin_help(cmd_line* cmd, char* command);
+
+void cmdl_parsechar(cmd_line* cmd, char in);
+
+void cmdl_addreplace(cmd_line* cmd, char in);
+void cmdl_addinsert(cmd_line* cmd, char in);
+void cmdl_enterloop(cmd_line* cmd);
+void cmdl_exec(cmd_line* cmd);
+void cmdl_setexit(cmd_line* cmd, int exit);
+int cmdl_getexit(cmd_line* cmd);
+void cmdl_clearoutput(cmd_line* cmd);
+void cmdl_clearbuffer(cmd_line* cmd);
+int cmdl_printf(cmd_line* cmd, const char *format, ...);
+char* cmdl_getoutput(cmd_line* cmd);
+//void cmdl_addoutput_str(cmd_line* cmd, char output[CMDL_OUTPUT_SIZE]);
+void cmdl_addstr(cmd_line* cmd, char* str);
+int cmdl_movecursor(cmd_line* cmd, int direction);
+char* cmdl_getbuffer(cmd_line* cmd);
+void cmdl_addchar(cmd_line* cmd, char in);
+int cmdl_check(cmd_line* cmd);
+void cmdl_del(cmd_line* cmd);
+cmd_line* cmdl_create();
+void cmdl_free(cmd_line* cmd);
+char *cmdl_getprompt(cmd_line* cmd);
+void cmdl_setpropmt(cmd_line* cmd, char prompt[CMDL_PROMPT_SIZE]);
+cmdl_param_list* cmdl_getparams(const char* command);
+void cmdl_tabcomplete(cmd_line *cmd);
+
+#endif
+

src/include/cmdlist.h

@@ -0,0 +1,16 @@
+#ifndef COMMANDLIST_H
+#define COMMANDLIST_H
+
+void test_req();
+void test2_req();
+void help_req();
+
+void commandlist()
+{
+	test_req();
+	test2_req();
+	help_req();
+}
+
+#endif
+

src/include/command.h

@@ -0,0 +1,15 @@
+#ifndef COMMAND_H
+#define COMMAND_H
+
+#include <gpxe/tables.h>
+
+struct command {
+	const char *name;	 	     				// The name of the command
+	const char *usage;						// Description of how to use the command
+	const char *desc;						// Short description of the command
+	int ( *exec ) ( int argc, char **argv);				// The command function to call
+};
+
+#define __command __table ( commands, 01 )
+#endif
+