bak

Makefile

@@ -1,6 +1,6 @@
 CC=gcc
 CFLAGS:=-ggdb
-LDLIBS=-I ${CHDRD} $$(pkg-config --libs ncurses)
+LDLIBS=-I ${CHDRD} $$(pkg-config --libs ncurses readline)
 LEX:=flex
 
 LEXD:=src/

src/command.c

@@ -136,7 +136,7 @@ command(int commandc)
 	    return(NO);
 	}
 	/* if this is a line selection */
-	if (p->y1 < FLDLINE) {
+	if (p->y1 > FLDLINE) {
 
 	    /* find the selected line */
 	    /* note: the selection is forced into range */
@@ -173,6 +173,7 @@ command(int commandc)
     case '\n':	/* go to reference */
 	if (current_window == &wresult) {
 	    editref(curdispline);
+		window_change = CH_ALL;
 	    return(YES);
 	}
 	/* FALLTHROUGH */
@@ -304,9 +305,10 @@ command(int commandc)
 	    clearprompt();
 	    shellpath(filename, sizeof(filename), newpat);
 	    if (readrefs(filename) == NO) {
-		postmsg2("Ignoring an empty file");
-		return(NO);
+			postmsg2("Ignoring an empty file");
+			return(NO);
 	    }
+		window_change |= CH_INPUT;
 	    return(YES);
 	}
 	clearprompt();
@@ -499,6 +501,7 @@ cscope: cannot open pipe to shell command: %s\n", newpat);
 	    return(NO);
 	}
     } /* switch(commandc) */
+	window_change |= CH_INPUT;
     return(YES);
 }
 

src/constants.h

@@ -85,7 +85,6 @@
 #define	FLDLINE	(LINES - FIELDS - 1 - 1)	/* first input field line */
 #define	MSGLINE	0			/* message line */
 #define	PRLINE	(LINES - 1)		/* input prompt line */
-#define REFLINE	3			/* first displayed reference line */
 
 /* input fields (value matches field order on screen) */
 #define	SYMBOL		0

src/display.c

@@ -85,12 +85,7 @@ static int mode_window_height;
 
 #define WRESULT_TABLE_BODY_START 4
 
-static enum {
-	CH_RESULT = 0x0001,
-	CH_INPUT  = CH_RESULT << 1,
-	CH_MODE   = CH_RESULT << 2,
-	CH_ALL    = CH_RESULT | CH_INPUT | CH_MODE
-};
+int window_change = CH_ALL;
 
 const char	dispchars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
 
@@ -143,7 +138,7 @@ dispinit(void)
 	mode_window_height = LINES - input_window_height - 2 - 1;
 	first_col_width = 48; // (((COLS - 2)%2 == 0) ? ((COLS-2)/2) : (((COLS-2)/2)+1));
 	second_col_width = COLS - 2 - 1 - first_col_width; //((COLS - 2) / 2) - 1;
-	mdisprefs = result_window_height - 1;
+	mdisprefs = result_window_height - WRESULT_TABLE_BODY_START - 1 - 1;
 
 	if (mdisprefs <= 0) {
 		postfatal("%s: screen too small\n", argv0);
@@ -156,6 +151,9 @@ dispinit(void)
 	/* allocate the displayed line array */
 	displine = malloc(mdisprefs * sizeof(*displine));
 
+	/* readline */
+	rlinit();
+
 	/* initialize windows */
 	winput = newwin(input_window_height, first_col_width, 1, 1);
 	wmode = newwin(mode_window_height, first_col_width, input_window_height+1 + 1, 1);
@@ -197,7 +195,7 @@ static inline void display_frame(){
 	waddstr(stdscr, helpstring);
 }
 
-static inline void display_input_fields(){
+static inline void display_mode(){
     for(int i = 0; i < FIELDS; ++i){
 		mvwprintw(wmode, i, 0, "%s %s", fields[i].text1, fields[i].text2);
     }
@@ -271,7 +269,7 @@ static inline void display_results(){
 	/* until the max references have been displayed or 
 	   there is no more room */
 	topline = nextline;
-	for (disprefs = 0, screenline = REFLINE;
+	for (disprefs = 0, screenline = WRESULT_TABLE_BODY_START;
 	     disprefs < mdisprefs && screenline <= result_window_height;
 	     ++disprefs, ++screenline)
 	{
@@ -392,9 +390,10 @@ static inline void display_results(){
 		wmove(wresult, screenline, second_col_width - srctxtw);
 	    } /* for(ever) */
 	} /* for(reference output lines) */
-    endrefs:
+
+endrefs:
 	/* position the cursor for the message */
-	i = FLDLINE - 1;
+	i = result_window_height - 1;
 	if (screenline < i) {
 	    waddch(wresult, '\n');
 	}
@@ -408,7 +407,7 @@ static inline void display_results(){
 	    wprintw(wresult, "* Lines %d-%d of %d, %d more - press the space bar to display more *", topline, bottomline, totallines, i);
 	}
 	/* if this is the last page of references */
-	else if (topline > 1 && nextline > totallines) {
+	else{ //if (topline > 1 && nextline > totallines) {	//XXX: i dont see how this condition is ever userful, but i might be wrong
 	    waddstr(wresult, "* Press the space bar to display the first lines again *");
 	}
 }
@@ -422,7 +421,7 @@ void display_cursor(void){
 	}else if(current_window == &wmode){
 		yoffset = field;
 	}else if(current_window == &wresult){
-		yoffset = WRESULT_TABLE_BODY_START + curdispline;
+		yoffset = displine[curdispline];
 	}else{
 		assert(("No window selected.", true));
 	}
@@ -439,17 +438,29 @@ display(void)
 {
     //drawscrollbar(topline, nextline);	/* display the scrollbar */
 
-	display_frame();
-	display_command_field();
-	display_input_fields();
-	display_results();
+	if(window_change){
+		if(window_change & CH_ALL){
+			display_frame();
+		}
+		if(window_change & CH_INPUT){
+			display_command_field();
+		}
+		if(window_change & CH_RESULT){
+			display_results();
+		}
+		if(window_change & CH_MODE){
+			display_mode();
+		}
+
+		display_cursor();
 
-	display_cursor();
+		refresh();
+		wrefresh(winput);
+		wrefresh(wmode);
+		wrefresh(wresult);
+	}
 
-    refresh();
-    wrefresh(winput);
-    wrefresh(wmode);
-    wrefresh(wresult);
+	window_change = CH_NONE;
 }
 
 void
@@ -709,7 +720,7 @@ postmsg2(char *msg)
 	else {
 		clearmsg2();
 		waddstr(wresult, msg);
-		refresh();
+		wrefresh(wresult);
 	}
 }
 

src/global.h

@@ -84,6 +84,15 @@ struct cmd {			/* command history struct */
 	char	*text;			/* input field text */
 };
 
+enum {
+	CH_NONE   = 0x0000,
+	CH_RESULT = 0x0001 << 0,
+	CH_INPUT  = 0x0001 << 1,
+	CH_MODE   = 0x0001 << 2,
+	CH_ALL    = CH_RESULT | CH_INPUT | CH_MODE
+};
+
+
 
 #ifndef DFLT_INCDIR
 # define DFLT_INCDIR "/usr/include"
@@ -181,6 +190,7 @@ extern	unsigned int topline;		/* top line of page */
 extern	long	searchcount;		/* count of files searched */
 extern	unsigned int totallines;	/* total reference lines */
 extern	const char dispchars[];		/* display chars for jumping to lines */
+extern	int window_change;
 
 /* find.c global data */
 extern	char	block[];	/* cross-reference file block */
@@ -199,6 +209,10 @@ extern	struct	keystruct {
 /* mouse.c global data */
 extern	BOOL	mouse;		/* mouse interface */
 
+/* display.c global data */
+extern int input_available;
+extern char input_char;
+
 #if UNIXPC
 extern	BOOL	unixpcmouse;		/* UNIX PC mouse interface */
 #endif
@@ -232,6 +246,8 @@ extern char	*reflines;		/* symbol reference lines file */
 void verswp_field(void);
 void horswp_field(void);
 
+void	rlinit(void);
+
 void	addcmd(int f, char *s);
 void	addsrcfile(char *path);
 void	askforchar(void);

src/input.c

@@ -56,12 +56,9 @@ static void catchint(int sig);
 
 /* catch the interrupt signal */
 
-/*ARGSUSED*/
 static void
 catchint(int sig)
 {
- 	(void) sig;		/* 'use' it, to avoid a warning */
-
 	signal(SIGINT, catchint);
 	longjmp(env, 1);
 }

src/main.c

@@ -681,6 +681,8 @@ static inline	void	screenmode_event_loop(void){
 		display();
 
 		c = mygetch();
+		input_available = 1;
+		rl_callback_read_char();
 
 		/* exit if the quit command is entered */
 		if (c == EOF || c == ctrl('D')) {
@@ -691,6 +693,5 @@ static inline	void	screenmode_event_loop(void){
 			continue;
 		}
 
-		command(c);
     }
 }

src/readline.c

@@ -0,0 +1,42 @@
+#include <readline/readline.h>
+#include "global.h"
+
+int input_available = 0;
+char input_char;
+
+static void getc_function(FILE* ignore){
+	input_available = 0;
+	return (int)input_char;
+}
+
+static input_available_hook(){
+	return input_available;
+}
+
+static void redisplay_function(){
+	window_change |= CH_INPUT;
+	//display();
+}
+
+static void callback_handler(char* line){
+	// ?!
+}
+
+int proxy(int i, int h){
+	horswp_field();
+}
+
+void rlinit(){
+	rl_catch_signals = 0;
+	rl_catch_sigwinch = 0;
+	rl_prep_term_function = NULL;
+	rl_deprep_term_function = NULL;
+	rl_change_environment = 0;
+
+	rl_getc_function = getc_function;
+	rl_input_available_hook = input_available_hook;
+	rl_redisplay_function = redisplay_function;
+	rl_callback_handler_install("", callback_handler);
+
+	rl_bind_key('\t', proxy);
+}