move readline code to separate file.

src/CMakeLists.txt

@@ -48,7 +48,7 @@ option(WITH_HOST_FST "Enable host fst support" ON)
 option(TOGGLE_STATUS "Enable F10 Toggle Status support (win32/x11)" OFF)
 option(WITH_RAWNET "Enable Uthernet emulation" OFF)
 option(WITH_ATBRIDGE "Enable AT Bridge" OFF)
-
+set(READLINE "NONE" CACHE STRING "Readline library (NONE, READLINE, LIBEDIT")
 
 set(generated_headers 8inst_c.h 16inst_c.h 8inst_s.h 16inst_s.h size_c.h size_s.h 8size_s.h 16size_s.h)
 add_custom_command(
@@ -142,6 +142,8 @@ SET_SOURCE_FILES_PROPERTIES(
   MACOSX_PACKAGE_LOCATION Resources
  )
 
+
+
 if(APPLE)
 	add_custom_command(TARGET GSplus POST_BUILD
 		COMMAND ${CMAKE_COMMAND} -E copy_if_different
@@ -152,6 +154,16 @@ if(APPLE)
 endif()
 # SET_SOURCE_FILES_PROPERTIES(vmnet_helper PROPERTIES MACOSX_PACKAGE_LOCATION MacOS)
 
+add_library(x_readline readline.c)
+if(READLINE MATCHES "READLINE")
+	target_compile_definitions(x_readline PRIVATE USE_READLINE)
+	target_link_libraries(x_readline PUBLIC history readline)
+elseif(READLINE MATCHES "LIBEDIT")
+	target_compile_definitions(x_readline PRIVATE USE_LIBEDIT)
+	target_link_libraries(x_readline PUBLIC edit)
+endif()
+
+target_link_libraries(GSplus x_readline)
 
 if (WITH_RAWNET)
 	target_link_libraries(GSplus rawnet)

src/debug_shell.re2c

@@ -16,7 +16,7 @@
 #include "disasm.h"
 
 
-
+extern char *x_readline(const char *prompt);
 
 extern int g_fullscreen;
 extern int g_config_control_panel;
@@ -865,31 +865,13 @@ command:
 	*/
 }
 
-char *readline(const char *prompt) {
+enum {
-	static char buffer[1024];
+	MODE_NORMAL,
-	fputs(prompt, stdout);
+	MODE_ASSEMBER
-	fflush(stdout);
+};
 
-	for(;;) {
+static int g_debugger_mode = MODE_NORMAL;
-		int ok = read(STDIN_FILENO, buffer, sizeof(buffer)-1);
-		if (ok < 0) {
-			if (ok == EINTR) continue;
-			return NULL;
-		}
-		if (ok == 0) return NULL;
-		while (ok) {
-			char c = buffer[ok-1];
-			if (c == ' ' || c == '\r' || c == '\n') {
-				--ok;
-				continue;
-			}
-			break;
-		}
-		buffer[ok] = 0;
 
-		return buffer;
-	}
-}
 
 int debug_shell(int code) {
 	int c;
@@ -923,7 +905,7 @@ int debug_shell(int code) {
 	do_list(engine.kpc, &psr, 1);
 
 	for(;;) {
-		cp = readline("> ");
+		cp = x_readline("> ");
 		if (!cp) return 0;
 		if (!*cp) continue;
 		c = parse_command(cp);

src/readline.c

@@ -0,0 +1,164 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+
+#if defined(USE_LIBEDIT)
+
+#include <histedit.h>
+
+
+	/* BSD libedit support */
+EditLine *el = NULL;
+History *hist = NULL;
+HistEvent ev;
+
+static const char *el_prompt = NULL;
+static char *prompt_fn(EditLine *el) {
+	return el_prompt ? (char *)el_prompt : "";
+}
+
+char *x_readline(const char *prompt) {
+	static char buffer[1024];
+	int ok = 0;
+	const char *cp;
+
+	if (!el) {
+		hist = history_init();
+		history(hist, &ev, H_SETSIZE, 50);
+		history(hist, &ev, H_SETUNIQUE, 1);
+
+		el = el_init("GS+", stdin, stdout, stderr);
+		el_set(el, EL_EDITOR, "emacs");
+		el_set(el, EL_BIND, "-e", NULL, NULL, NULL);
+		el_set(el, EL_HIST, history, hist);
+		el_set(el, EL_PROMPT, prompt_fn);
+		el_set(el, EL_SIGNAL, 1);
+		el_source(el, NULL);
+	}
+
+	el_prompt = prompt;
+	cp = el_gets(el, &ok);
+	el_prompt = NULL;
+	if (ok <= 0) return NULL;
+	if (ok > sizeof(buffer) - 1) return "";
+
+
+	memcpy(buffer, cp, ok);
+	while (ok) {
+		unsigned c = buffer[ok-1];
+		if (c == ' ' || c == '\r' || c == '\n') {
+			--ok;
+			continue;
+		}
+		break;
+	}
+	buffer[ok] = 0;
+
+	if (*buffer)
+		history(hist, &ev, H_ENTER, buffer);
+
+	return buffer;
+}
+
+void x_readline_end(void) {
+	if (el) {
+		el_end(el);
+		el = NULL;
+	}
+	if (hist) {
+		history_end(hist);
+		hist = NULL;
+	}
+}
+
+#elif defined(USE_READLINE)
+	/* GNU Readline support */
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+static int readline_init = 0;
+/* suppress tab completion, which defaults to filenames */
+static char **rl_acf(const char* text, int start, int end) {
+	return NULL;
+}
+char *x_readline(const char *prompt) {
+	static char buffer[1024];
+
+	char *cp;
+	int ok;
+
+	if (!readline_init) {
+		rl_readline_name = "GS+";
+		rl_attempted_completion_function = rl_acf;
+
+		using_history();
+		stifle_history(50);
+
+		readline_init = 1;
+	}
+
+	char *cp = readline(prompt);
+	if (!cp) return NULL;
+	ok = strlen(cp);
+	if (ok > sizeof(buffer1) - 1) {
+		free(cp);
+		return "";
+	}
+	memcpy(buffer, cp, ok);
+	while (ok) {
+		unsigned c = buffer[ok-1];
+		if (c == ' ' || c == '\r' || c == '\n') {
+			--ok;
+			continue;
+		}
+		break;
+	}
+	buffer[ok] = 0;
+	free(cp);
+
+	/* append to history, but only if unique from prev. entry */
+	if (*buffer) {
+		HIST_ENTRY *h = history_get(history_length-1);
+		if (h == NULL || strcmp(buffer, h->line))
+			add_history(buffer);
+	}
+	return buffer;
+}
+
+void x_readline_end(void) {
+}
+#else
+
+char *x_readline(const char *prompt) {
+	static char buffer[1024];
+	fputs(prompt, stdout);
+	fflush(stdout);
+
+	for(;;) {
+		int ok = read(STDIN_FILENO, buffer, sizeof(buffer)-1);
+		if (ok < 0) {
+			if (ok == EINTR) continue;
+			return NULL;
+		}
+		if (ok == 0) return NULL;
+		while (ok) {
+			unsigned c = buffer[ok-1];
+			if (c == ' ' || c == '\r' || c == '\n') {
+				--ok;
+				continue;
+			}
+			break;
+		}
+		buffer[ok] = 0;
+
+		return buffer;
+	}
+}
+
+void x_readline_end(void) {
+
+}
+#endif