--- mon/src/mon.cpp	2003/09/27 20:33:06	1.22
+++ mon/src/mon.cpp	2004/02/12 16:42:35	1.23
@@ -66,7 +66,7 @@ static uint8 *mem;
 FILE *monin, *monout, *monerr;
 
 // Input line
-static char input[INPUT_LENGTH];
+static char *input;
 static char *in_ptr;
 char *mon_args_ptr;
 
@@ -78,21 +78,21 @@ static uint32 colon_value;
 
 
 // Scanner variables
-enum Token mon_token;			// Last token read
-uintptr mon_number;				// Contains the number if mon_token==T_NUMBER
-char mon_string[INPUT_LENGTH];	// Contains the string if mon_token==T_STRING
-char mon_name[INPUT_LENGTH];	// Contains the variable name if mon_token==T_NAME
+enum Token mon_token;  // Last token read
+uintptr mon_number;    // Contains the number if mon_token==T_NUMBER
+char *mon_string;      // Contains the string if mon_token==T_STRING
+char *mon_name;        // Contains the variable name if mon_token==T_NAME
 
 
 // List of installed commands
 struct CmdSpec {
-	const char *name;	// Name of command
-	void (*func)(void);	// Function that executes this command
+	const char *name;  // Name of command
+	void (*func)();    // Function that executes this command
 };
 
-static CmdSpec *cmds;		// Array of CmdSpecs
-static int num_cmds;		// Number of installed commands
-static char *cmd_help;		// Help text for commands
+static CmdSpec *cmds;   // Array of CmdSpecs
+static int num_cmds;    // Number of installed commands
+static char *cmd_help;  // Help text for commands
 
 
 // List of variables
@@ -101,17 +101,17 @@ static var_map vars;
 
 
 // Prototypes
-static void init_abort(void);
-static void exit_abort(void);
+static void init_abort();
+static void exit_abort();
 
 static void read_line(char *prompt);		// Scanner
-static char get_char(void);
+static char get_char();
 static void put_back(char c);
 static enum Token get_hex_number(uintptr &i);
 static enum Token get_dec_number(uintptr &i);
 static enum Token get_char_number(uintptr &i);
-static enum Token get_string(char *str);
-static enum Token get_hex_or_name(uintptr &i, char *name);
+static enum Token get_string(char *&str);
+static enum Token get_hex_or_name(uintptr &i, char *&name);
 
 static bool eor_expr(uintptr *number);	// Parser
 static bool and_expr(uintptr *number);
@@ -125,7 +125,7 @@ static bool factor(uintptr *number);
  *  Add command to mon
  */
 
-void mon_add_command(const char *name, void (*func)(void), const char *help_text)
+void mon_add_command(const char *name, void (*func)(), const char *help_text)
 {
 	num_cmds++;
 	if (cmds)
@@ -170,7 +170,7 @@ static void handle_abort(int sig)
 	was_aborted = true;
 }
 
-static void init_abort(void)
+static void init_abort()
 {
 	was_aborted = false;
 	sigemptyset(&my_sa.sa_mask);
@@ -184,13 +184,13 @@ static void init_abort(void)
 	sigaction(SIGINT, &my_sa, NULL);
 }
 
-static void exit_abort(void)
+static void exit_abort()
 {
 	my_sa.sa_handler = SIG_DFL;
 	sigaction(SIGINT, &my_sa, NULL);
 }
 
-bool mon_aborted(void)
+bool mon_aborted()
 {
 	bool ret = was_aborted;
 	was_aborted = false;
@@ -260,30 +260,26 @@ static void read_line(char *prompt)
 #ifdef HAVE_LIBREADLINE
 	static char *line_read = NULL;
 
-	if (line_read) {
-		free(line_read);
-		line_read = NULL;
-	}
-
-	line_read = readline(prompt);
-
-	if (line_read) {
-
-		if (*line_read)
-			add_history(line_read);
-
-		strncpy(in_ptr = input, line_read, INPUT_LENGTH);
-		input[INPUT_LENGTH-1] = 0;
-
+	if (input)
+		free(input);
+	input = readline(prompt);
+
+	if (input) {
+		if (*input)
+			add_history(input);
 	} else {
-
 		// EOF, quit cxmon
-		fprintf(monout, "x\n");
+		input = (char *)malloc(2);
 		input[0] = 'x';
 		input[1] = 0;
-		in_ptr = input;
+		fprintf(monout, "x\n");
 	}
+
+	in_ptr = input;
 #else
+#define INPUT_LENGTH 256
+	if (!input)
+		input = (char *)malloc(INPUT_LENGTH);
 	fprintf(monout, prompt);
 	fflush(monout);
 	fgets(in_ptr = input, INPUT_LENGTH, monin);
@@ -298,7 +294,7 @@ static void read_line(char *prompt)
  *  Read a character from the input line
  */
 
-static char get_char(void)
+static char get_char()
 {
 	return *in_ptr++;
 }
@@ -318,12 +314,13 @@ static void put_back(char c)
  *  Scanner: Get a token from the input line
  */
 
-enum Token mon_get_token(void)
+enum Token mon_get_token()
 {
-	char c;
+	char c = get_char();
 
 	// Skip spaces
-	while ((c = get_char()) == ' ') ;
+	while (isspace(c))
+		c = get_char();
 
 	switch (c) {
 		case 0:
@@ -457,41 +454,64 @@ static enum Token get_char_number(uintpt
 	return T_NULL;
 }
 
-static enum Token get_string(char *str)
+static enum Token get_string(char *&str)
 {
-	char c;
+	// Remember start of string
+	char *old_in_ptr = in_ptr;
 
+	// Determine string length
+	char c;
+	unsigned n = 0;
 	while ((c = get_char()) != 0) {
-		if (c == '"') {
-			*str = 0;
-			return T_STRING;
-		}
-		*str++ = c;
+		n++;
+		if (c == '"')
+			break;
+	}
+	if (c == 0) {
+		mon_error("Unterminated string");
+		return T_NULL;
 	}
 
-	mon_error("Unterminated string");
-	return T_NULL;
+	// Allocate new buffer (n: size needed including terminating 0)
+	str = (char *)realloc(str, n);
+
+	// Copy string to buffer
+	char *p = str;
+	in_ptr = old_in_ptr;
+	while (--n)
+		*p++ = get_char();
+	*p++ = 0;
+	get_char();  // skip closing '"'
+	return T_STRING;
 }
 
-static enum Token get_hex_or_name(uintptr &i, char *name)
+static enum Token get_hex_or_name(uintptr &i, char *&name)
 {
+	// Remember start of token
 	char *old_in_ptr = in_ptr;
-	char c;
 
 	// Try hex number first
 	if (get_hex_number(i) == T_NUMBER)
 		return T_NUMBER;
 
-	// Not a hex number, must be a variable name
+	// Not a hex number, must be a variable name; determine its length
 	in_ptr = old_in_ptr;
-	c = get_char();
+	char c = get_char();
+	unsigned n = 1;
 	do {
-		*name++ = c;
+		n++;
 		c = get_char();
 	} while (isalnum(c));
 
-	*name = 0;
-	put_back(c);
+	// Allocate new buffer (n: size needed including terminating 0)
+	name = (char *)realloc(name, n);
+
+	// Copy name to buffer
+	in_ptr = old_in_ptr;
+	char *p = name;
+	while (--n)
+		*p++ = get_char();
+	*p = 0;
 	return T_NAME;
 }
 
@@ -785,7 +805,7 @@ static bool factor(uintptr *number)
  *  set [var[=value]]
  */
 
-static void set_var(void)
+static void set_var()
 {
 	if (mon_token == T_END) {
 
@@ -831,7 +851,7 @@ static void set_var(void)
  *  cv
  */
 
-static void clear_vars(void)
+static void clear_vars()
 {
 	vars.clear();
 }
@@ -842,7 +862,7 @@ static void clear_vars(void)
  *  h
  */
 
-static void help_or_hunt(void)
+static void help_or_hunt()
 {
 	if (mon_token != T_END) {
 		hunt();
@@ -859,7 +879,7 @@ static void help_or_hunt(void)
  *  ??
  */
 
-static void mon_cmd_list(void)
+static void mon_cmd_list()
 {
 	for (int i=0; i<num_cmds; i++)
 		fprintf(monout, "%s ", cmds[i].name);
@@ -872,7 +892,7 @@ static void mon_cmd_list(void)
  *  @ [size]
  */
 
-static void reallocate(void)
+static void reallocate()
 {
 	uintptr size;
 
@@ -962,17 +982,17 @@ static void apply(int size)
 	mon_dot_address = adr;
 }
 
-static void apply_byte(void)
+static void apply_byte()
 {
 	apply(1);
 }
 
-static void apply_half(void)
+static void apply_half()
 {
 	apply(2);
 }
 
-static void apply_word(void)
+static void apply_word()
 {
 	apply(4);
 }
@@ -982,7 +1002,7 @@ static void apply_word(void)
  *  Execute command via system() (for ls, rm, etc.)
  */
 
-static void mon_exec(void)
+static void mon_exec()
 {
 	system(input);
 }
@@ -992,13 +1012,16 @@ static void mon_exec(void)
  *  Change current directory
  */
 
-static void mon_change_dir(void)
+void mon_change_dir()
 {
-	char c;
 	in_ptr = input;
-	while ((c = get_char()) == ' ') ;
-	while ((c = get_char()) != ' ') ;
-	while ((c = get_char()) == ' ') ;
+	char c = get_char();
+	while (isspace(c))
+		c = get_char();
+	while (isgraph(c))
+		c = get_char();
+	while (isspace(c))
+		c = get_char();
 	put_back(c);
 	if (chdir(in_ptr) != 0)
 		mon_error("Cannot change directory");
@@ -1009,7 +1032,7 @@ static void mon_change_dir(void)
  *  Initialize mon
  */
 
-void mon_init(void)
+void mon_init()
 {
 	cmds = NULL;
 	num_cmds = 0;
@@ -1052,6 +1075,10 @@ void mon_init(void)
 
 	mon_read_byte = NULL;
 	mon_write_byte = NULL;
+
+	input = NULL;
+	mon_string = NULL;
+	mon_name = NULL;
 }
 
 
@@ -1059,12 +1086,27 @@ void mon_init(void)
  *  Deinitialize mon
  */
 
-void mon_exit(void)
+void mon_exit()
 {
-	free(cmds);
-	cmds = NULL;
+	if (cmds) {
+		free(cmds);
+		cmds = NULL;
+	}
 	num_cmds = 0;
 	cmd_help = NULL;
+
+	if (input) {
+		free(input);
+		input = NULL;
+	}
+	if (mon_string) {
+		free(mon_string);
+		mon_string = NULL;
+	}
+	if (mon_name) {
+		free(mon_name);
+		mon_name = NULL;
+	}
 }
 
 
@@ -1075,7 +1117,6 @@ void mon_exit(void)
 void mon(int argc, char **argv)
 {
 	bool done = false, interactive = true;
-	char c, cmd[INPUT_LENGTH];
 
 	// Setup input/output streams
 	monin = stdin;
@@ -1144,37 +1185,48 @@ void mon(int argc, char **argv)
 	init_abort();
 
 	// Read and parse command line
+	char *cmd = NULL;
 	while (!done) {
 		if (interactive) {
 			char prompt[16];
 			sprintf(prompt, "[%0*lx]-> ", 2 * sizeof(mon_dot_address), mon_dot_address);
 			read_line(prompt);
+			if (!input) {
+				done = true;
+				continue;
+			}
 		} else {
 			if (argc == 0) {
 				done = true;
 				break;
 			} else {
-				strncpy(in_ptr = input, argv[0], INPUT_LENGTH);
+				unsigned n = strlen(argv[0]) + 1;
+				input = (char *)realloc(input, n);
+				strcpy(in_ptr = input, argv[0]);
 				argc--;
 				argv++;
 			}
 		}
 
 		// Skip leading spaces
-		while ((c = get_char()) == ' ') ;
+		char c = get_char();
+		while (isspace(c))
+			c = get_char();
+		put_back(c);
+		if (!c)
+			continue;  // blank line
 
 		// Read command word
-		char *p = cmd;
-		do {
-			*p++ = c;
+		char *p = in_ptr;
+		while (isgraph(c))
 			c = get_char();
-		} while (isgraph(c));
-		*p = 0;
 		put_back(c);
+		unsigned n = in_ptr - p;
+		cmd = (char *)realloc(cmd, n + 1);
+		memcpy(cmd, p, n);
+		cmd[n] = 0;
 
 		// Execute command
-		if (cmd[0] == 0)				// Blank line
-			continue;
 		if (strcmp(cmd, "x") == 0) {	// Exit
 			done = true;
 			continue;
@@ -1190,6 +1242,9 @@ void mon(int argc, char **argv)
 cmd_done: ;
 	}
 
+	if (cmd)
+		free(cmd);
+
 	exit_abort();
 
 	// Free buffer