svn commit: trunk/busybox/editors
vda at busybox.net
vda at busybox.net
Wed May 30 02:01:44 UTC 2007
Author: vda
Date: 2007-05-29 19:01:40 -0700 (Tue, 29 May 2007)
New Revision: 18705
Log:
vi: move some data to malloc'ed space: ~500 less bss, code
size is smaller too (subject to arch differenced I guess)
Modified:
trunk/busybox/editors/vi.c
Changeset:
Modified: trunk/busybox/editors/vi.c
===================================================================
--- trunk/busybox/editors/vi.c 2007-05-30 00:55:52 UTC (rev 18704)
+++ trunk/busybox/editors/vi.c 2007-05-30 02:01:40 UTC (rev 18705)
@@ -104,62 +104,88 @@
#define err_method (vi_setops & VI_ERR_METHOD)
-static int editing; // >0 while we are editing a file
-static int cmd_mode; // 0=command 1=insert 2=replace
-static int file_modified; // buffer contents changed
-static int last_file_modified = -1;
-static int fn_start; // index of first cmd line file name
-static int save_argc; // how many file names on cmd line
-static int cmdcnt; // repetition count
-static int rows, columns; // the terminal screen is this size
-static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
-static char *status_buffer; // mesages to the user
+static smallint editing; // >0 while we are editing a file
+ // [code audit says "can be 0 or 1 only"]
+static smallint cmd_mode; // 0=command 1=insert 2=replace
+static smallint file_modified; // buffer contents changed
+static smallint last_file_modified = -1;
+static int fn_start; // index of first cmd line file name
+static int save_argc; // how many file names on cmd line
+static int cmdcnt; // repetition count
+static int rows, columns; // the terminal screen is this size
+static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
+static char *status_buffer; // mesages to the user
#define STATUS_BUFFER_LEN 200
static int have_status_msg; // is default edit status needed?
+ // [don't make smallint!]
static int last_status_cksum; // hash of current status line
-static char *cfn; // previous, current, and next file name
-static char *text, *end; // pointers to the user data in memory
-static char *screen; // pointer to the virtual screen buffer
-static int screensize; // and its size
-static char *screenbegin; // index into text[], of top line on the screen
-static char *dot; // where all the action takes place
+static char *cfn; // previous, current, and next file name
+//static char *text, *end; // pointers to the user data in memory
+static char *screen; // pointer to the virtual screen buffer
+static int screensize; // and its size
+static char *screenbegin; // index into text[], of top line on the screen
+//static char *dot; // where all the action takes place
static int tabstop;
-static struct termios term_orig, term_vi; // remember what the cooked mode was
static char erase_char; // the users erase character
static char last_input_char; // last char read from user
static char last_forward_char; // last char searched for with 'f'
+#if ENABLE_FEATURE_VI_READONLY
+static smallint vi_readonly, readonly;
+#endif
+#if ENABLE_FEATURE_VI_DOT_CMD
+static smallint adding2q; // are we currently adding user input to q
+static char *last_modifying_cmd; // last modifying cmd for "."
+static char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
+#endif
#if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
static int last_row; // where the cursor was last moved to
#endif
-#if ENABLE_FEATURE_VI_USE_SIGNALS
-static jmp_buf restart; // catch_sig()
-#endif
#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
static int my_pid;
#endif
-#if ENABLE_FEATURE_VI_DOT_CMD
-static int adding2q; // are we currently adding user input to q
-static char *last_modifying_cmd; // last modifying cmd for "."
-static char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
-#endif
#if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
-static char *modifying_cmds; // cmds that modify text[]
+static char *modifying_cmds; // cmds that modify text[]
#endif
-#if ENABLE_FEATURE_VI_READONLY
-static int vi_readonly, readonly;
+#if ENABLE_FEATURE_VI_SEARCH
+static char *last_search_pattern; // last pattern from a '/' or '?' search
#endif
+
+/* Moving biggest data to malloced space... */
+struct globals {
+ /* many references - keep near the top of globals */
+ char *text, *end; // pointers to the user data in memory
+ char *dot; // where all the action takes place
#if ENABLE_FEATURE_VI_YANKMARK
-static char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
-static int YDreg, Ureg; // default delete register and orig line for "U"
-static char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
-static char *context_start, *context_end;
+ char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
+ int YDreg, Ureg; // default delete register and orig line for "U"
+ char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
+ char *context_start, *context_end;
#endif
-#if ENABLE_FEATURE_VI_SEARCH
-static char *last_search_pattern; // last pattern from a '/' or '?' search
+ /* a few references only */
+#if ENABLE_FEATURE_VI_USE_SIGNALS
+ jmp_buf restart; // catch_sig()
#endif
+ struct termios term_orig, term_vi; // remember what the cooked mode was
+#if ENABLE_FEATURE_VI_COLON
+ char *initial_cmds[3]; // currently 2 entries, NULL terminated
+#endif
+};
+#define G (*ptr_to_globals)
+#define text (G.text )
+#define end (G.end )
+#define dot (G.dot )
+#define reg (G.reg )
+#define YDreg (G.YDreg )
+#define Ureg (G.Ureg )
+#define mark (G.mark )
+#define context_start (G.context_start )
+#define context_end (G.context_end )
+#define restart (G.restart )
+#define term_orig (G.term_orig )
+#define term_vi (G.term_vi )
+#define initial_cmds (G.initial_cmds )
-
static void edit_file(char *); // edit one file
static void do_cmd(char); // execute a command
static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
@@ -258,9 +284,6 @@
static void crash_test();
static int crashme = 0;
#endif
-#if ENABLE_FEATURE_VI_COLON
-static char *initial_cmds[] = { NULL, NULL , NULL }; // currently 2 entries, NULL terminated
-#endif
static void write1(const char *out)
@@ -280,6 +303,9 @@
#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
my_pid = getpid();
#endif
+
+ PTR_TO_GLOBALS = xzalloc(sizeof(G));
+
#if ENABLE_FEATURE_VI_CRASHME
srand((long) my_pid);
#endif
@@ -350,11 +376,11 @@
//----- This is the main file handling loop --------------
if (optind >= argc) {
- editing = 1; // 0= exit, 1= one file, 2= multiple files
+ editing = 1; // 0= exit, 1= one file, 2 = multiple files
edit_file(0);
} else {
for (; optind < argc; optind++) {
- editing = 1; // 0=exit, 1=one file, 2+ =many files
+ editing = 1; // 0=exit, 1=one file, 2+ = many files
free(cfn);
cfn = xstrdup(argv[optind]);
edit_file(cfn);
@@ -913,7 +939,7 @@
#endif
ch = file_insert(fn, q, file_size(fn));
#if ENABLE_FEATURE_VI_READONLY
- readonly= l;
+ readonly = l;
#endif
if (ch < 0)
goto vc1; // nothing was inserted
@@ -1054,7 +1080,7 @@
fn = args;
}
#if ENABLE_FEATURE_VI_READONLY
- if ((vi_readonly || readonly) && ! useforce) {
+ if ((vi_readonly || readonly) && !useforce) {
psbs("\"%s\" File is read only", fn);
goto vc3;
}
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