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-rw-r--r--README.menu81
-rw-r--r--com32/modules/menu.c18
-rw-r--r--com32/modules/menu.h4
-rw-r--r--com32/modules/readconfig.c38
-rw-r--r--parsecmd.inc5
-rw-r--r--parseconfig.inc2
6 files changed, 125 insertions, 23 deletions
diff --git a/README.menu b/README.menu
new file mode 100644
index 00000000..8c358a64
--- /dev/null
+++ b/README.menu
@@ -0,0 +1,81 @@
+$Id$
+
+There are two menu systems included with SYSLINUX, the advanced menu
+system, and the simple menu system.
+
+
++++ THE ADVANCED MENU SYSTEM +++
+
+The advanced menu system, written by Murali Krishnan Ganapathy, is
+located in the menu/ subdirectly. It allows the user to create
+hierarchial submenus, dynamic options, checkboxes, and just about
+anything you want. It requires that the menu is compiled from a
+simple C file, see menu/simple.c and menu/complex.c for examples.
+
+The advanced menu system doesn't support serial console at this time.
+
+See menu/README for more information.
+
+
++++ THE SIMPLE MENU SYSTEM +++
+
+The simple menu system is a single module located at
+com32/modules/menu.c32. It uses the same configuration file as the
+regular SYSLINUX command line, and displays all the LABEL statements.
+
+To use the menu system, simply make sure menu.c32 is in the
+appropriate location for your boot medium, and put the following
+options in your configuration file:
+
+DEFAULT menu.c32
+PROMPT 0
+
+
+There are a few menu additions to the command line, all starting with
+the keyword MENU; like the rest of the SYSLINUX config file
+language, it is case insensitive:
+
+MENU TITLE title
+
+ Give the menu a title. The title is presented at the top of
+ the menu.
+
+MENU LABEL label
+
+ (Only valid after a LABEL statement.)
+ Changes the label displayed for a specific entry. This allows
+ you to have a label that isn't suitable for the command line,
+ for example:
+
+ LABEL softcap
+ MENU LABEL Soft Cap Linux 9.6.36
+ KERNEL softcap-9.6.36.bzi
+ APPEND whatever
+
+MENU HIDE
+
+ (Only valid after a LABEL statement.)
+ Suppresses a particular LABEL entry from the menu.
+
+
+MENU DEFAULT
+
+ (Only valid after a LABEL statement.)
+ Indicates that this entry should be the default. If no
+ default is specified, use the first one.
+
+
+The menu system honours the TIMEOUT command; if TIMEOUT is specified
+it will execute the ONTIMEOUT command if one exists, otherwise it will
+pick the default menu option.
+
+Normally, the user can press [Tab] to edit the menu entry, and [Esc]
+to return to the SYSLINUX command line. However, if the configuration
+file specifies ALLOWOPTIONS 0, these keys will be disabled.
+
+The simple menu system supports serial console, using the normal
+SERIAL directive. However, it can be quite slow over a slow serial
+link; you probably want to set your baudrate to 38400 or higher if
+possible. It requires a Linux/VT220/ANSI-compatible terminal on the
+other end.
+
diff --git a/com32/modules/menu.c b/com32/modules/menu.c
index e3dace2f..c9794c24 100644
--- a/com32/modules/menu.c
+++ b/com32/modules/menu.c
@@ -131,6 +131,8 @@ void draw_menu(int sel, int top)
if ( allowedit )
printf("%s\033[%d;1H%s", menu_attrib->tabmsg, TABMSG_ROW,
pad_line("Press [Tab] to edit options", 1, WIDTH));
+
+ printf("%s\033[%d;1H", menu_attrib->screen, END_ROW);
}
char *edit_cmdline(char *input)
@@ -176,7 +178,7 @@ char *edit_cmdline(char *input)
case KEY_CTRL('U'):
if ( len ) {
len = 0;
- cmdline[len] = 0;
+ cmdline[len] = '\0';
redraw = 1;
}
break;
@@ -187,6 +189,7 @@ char *edit_cmdline(char *input)
len--;
wasbs = wasbs || (cmdline[len-1] <= ' ');
}
+ cmdline[len] = '\0';
redraw = 1;
}
break;
@@ -207,11 +210,9 @@ const char *run_menu(void)
int done = 0;
int entry = defentry;
int top = 0;
+ int clear = 1;
char *cmdline;
- /* Start with a clear screen */
- printf("%s\033[2J", menu_attrib->screen);
-
while ( !done ) {
if ( entry < 0 )
entry = 0;
@@ -223,6 +224,11 @@ const char *run_menu(void)
else if ( top > entry )
top = entry;
+ /* Start with a clear screen */
+ if ( clear )
+ printf("%s\033[2J", menu_attrib->screen);
+ clear = 0;
+
draw_menu(entry, top);
key = get_key(stdin);
@@ -266,6 +272,8 @@ const char *run_menu(void)
cmdline = edit_cmdline(menu_entries[entry].cmdline);
if ( cmdline )
return cmdline;
+ else
+ clear = 1;
}
break;
case KEY_CTRL('C'): /* Ctrl-C */
@@ -278,7 +286,7 @@ const char *run_menu(void)
}
/* Return the label name so localboot and ipappend work */
- return menu_entries[entry].displayname;
+ return menu_entries[entry].label;
}
diff --git a/com32/modules/menu.h b/com32/modules/menu.h
index e892a124..4766a395 100644
--- a/com32/modules/menu.h
+++ b/com32/modules/menu.h
@@ -14,7 +14,7 @@
/*
* menu.h
*
- * Header file for the menu project
+ * Header file for the simple menu system
*/
#ifndef MENU_H
@@ -22,7 +22,9 @@
struct menu_entry {
char *displayname;
+ char *label;
char *cmdline;
+ int flags;
};
#define MAX_CMDLINE_LEN 256
diff --git a/com32/modules/readconfig.c b/com32/modules/readconfig.c
index 39d3635d..eb64d6ae 100644
--- a/com32/modules/readconfig.c
+++ b/com32/modules/readconfig.c
@@ -111,7 +111,10 @@ struct labeldata {
char *label;
char *kernel;
char *append;
+ char *menulabel;
unsigned int ipappend;
+ unsigned int menuhide;
+ unsigned int menudefault;
};
static void record(struct labeldata *ld, char *append)
@@ -121,7 +124,9 @@ static void record(struct labeldata *ld, char *append)
if ( ld->label ) {
char *a, *s;
- menu_entries[nentries].displayname = ld->label;
+ menu_entries[nentries].displayname =
+ ld->menulabel ? ld->menulabel : ld->label;
+ menu_entries[nentries].label = ld->label;
ipp = ipoptions;
*ipp = '\0';
@@ -136,14 +141,16 @@ static void record(struct labeldata *ld, char *append)
s = a[0] ? " " : "";
asprintf(&menu_entries[nentries].cmdline, "%s%s%s%s", ld->kernel, ipoptions, s, a);
- printf("displayname: %s\n", menu_entries[nentries].displayname);
- printf("cmdline: %s\n", menu_entries[nentries].cmdline);
-
ld->label = NULL;
free(ld->kernel);
if ( ld->append )
free(ld->append);
- nentries++;
+
+ if ( !ld->menuhide ) {
+ if ( ld->menudefault )
+ defentry = nentries;
+ nentries++;
+ }
}
}
@@ -172,15 +179,19 @@ void parse_config(const char *filename)
*p = '\0';
p = skipspace(line);
- printf("> %s\n", p);
if ( looking_at(p, "menu") ) {
- p = skipspace(line+4);
-
+ p = skipspace(p+4);
+
if ( looking_at(p, "title") ) {
menu_title = strdup(skipspace(p+5));
+ } else if ( looking_at(p, "label") ) {
+ if ( ld.label )
+ ld.menulabel = strdup(skipspace(p+5));
} else if ( looking_at(p, "default") ) {
- defentry = atoi(skipspace(p+7));
+ ld.menudefault = 1;
+ } else if ( looking_at(p, "hide") ) {
+ ld.menuhide = 1;
} else {
/* Unknown, ignore for now */
}
@@ -193,10 +204,11 @@ void parse_config(const char *filename)
} else if ( looking_at(p, "label") ) {
p = skipspace(p+5);
record(&ld, append);
- ld.label = strdup(p);
- ld.kernel = strdup(p);
- ld.append = NULL;
- ld.ipappend = 0;
+ ld.label = strdup(p);
+ ld.kernel = strdup(p);
+ ld.append = NULL;
+ ld.menulabel = NULL;
+ ld.ipappend = ld.menudefault = ld.menuhide = 0;
} else if ( looking_at(p, "kernel") ) {
if ( ld.label ) {
free(ld.kernel);
diff --git a/parsecmd.inc b/parsecmd.inc
index 2aa4144c..8d0de95e 100644
--- a/parsecmd.inc
+++ b/parsecmd.inc
@@ -35,8 +35,6 @@ getcommand:
call skipspace ; Skip leading whitespace
jz .eof ; End of file
jc .find ; End of line: try again
- cmp al,'0' ; Skip comment line
- jb .skipline
or al,20h ; Convert to lower case
movzx ebx,al ; Hash for a one-char keyword
@@ -72,9 +70,10 @@ getcommand:
; No parameter
.noparm:
mov si,err_noparm
+ mov al,10 ; Already at EOL
.error:
call cwritestr
- jmp short .find
+ jmp short .skipline
.found_keywd: lodsw ; Load argument into ax
call [si]
diff --git a/parseconfig.inc b/parseconfig.inc
index 064dc7f4..6d7c93e9 100644
--- a/parseconfig.inc
+++ b/parseconfig.inc
@@ -272,7 +272,7 @@ pc_say: call pc_getline ; "say" command
;
; Comment line
;
-pc_comment equ pc_getline ; Get a line and discard
+pc_comment: ; Fall into pc_getline
;
; Common subroutine: load line into trackbuf; returns with SI -> trackbuf
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