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vi: move some data to malloc'ed space: ~500 less bss, code
size is smaller too (subject to arch differenced I guess)
This commit is contained in:
Denis Vlasenko
parent
27f79ff03d
commit
0b3b41b62a
110
editors/vi.c
110
editors/vi.c
@ -104,61 +104,87 @@ static int vi_setops;
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#define err_method (vi_setops & VI_ERR_METHOD)
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static int editing; // >0 while we are editing a file
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static int cmd_mode; // 0=command 1=insert 2=replace
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static int file_modified; // buffer contents changed
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static int last_file_modified = -1;
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static int fn_start; // index of first cmd line file name
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static int save_argc; // how many file names on cmd line
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static int cmdcnt; // repetition count
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static int rows, columns; // the terminal screen is this size
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static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
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static char *status_buffer; // mesages to the user
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static smallint editing; // >0 while we are editing a file
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// [code audit says "can be 0 or 1 only"]
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static smallint cmd_mode; // 0=command 1=insert 2=replace
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static smallint file_modified; // buffer contents changed
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static smallint last_file_modified = -1;
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static int fn_start; // index of first cmd line file name
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static int save_argc; // how many file names on cmd line
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static int cmdcnt; // repetition count
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static int rows, columns; // the terminal screen is this size
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static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
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static char *status_buffer; // mesages to the user
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#define STATUS_BUFFER_LEN 200
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static int have_status_msg; // is default edit status needed?
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// [don't make smallint!]
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static int last_status_cksum; // hash of current status line
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static char *cfn; // previous, current, and next file name
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static char *text, *end; // pointers to the user data in memory
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static char *screen; // pointer to the virtual screen buffer
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static int screensize; // and its size
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static char *screenbegin; // index into text[], of top line on the screen
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static char *dot; // where all the action takes place
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static char *cfn; // previous, current, and next file name
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//static char *text, *end; // pointers to the user data in memory
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static char *screen; // pointer to the virtual screen buffer
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static int screensize; // and its size
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static char *screenbegin; // index into text[], of top line on the screen
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//static char *dot; // where all the action takes place
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static int tabstop;
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static struct termios term_orig, term_vi; // remember what the cooked mode was
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static char erase_char; // the users erase character
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static char last_input_char; // last char read from user
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static char last_forward_char; // last char searched for with 'f'
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#if ENABLE_FEATURE_VI_READONLY
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static smallint vi_readonly, readonly;
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#endif
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#if ENABLE_FEATURE_VI_DOT_CMD
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static smallint adding2q; // are we currently adding user input to q
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static char *last_modifying_cmd; // last modifying cmd for "."
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static char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
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#endif
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#if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
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static int last_row; // where the cursor was last moved to
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#endif
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#if ENABLE_FEATURE_VI_USE_SIGNALS
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static jmp_buf restart; // catch_sig()
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#endif
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#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
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static int my_pid;
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#endif
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#if ENABLE_FEATURE_VI_DOT_CMD
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static int adding2q; // are we currently adding user input to q
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static char *last_modifying_cmd; // last modifying cmd for "."
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static char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
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#endif
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#if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
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static char *modifying_cmds; // cmds that modify text[]
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#endif
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#if ENABLE_FEATURE_VI_READONLY
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static int vi_readonly, readonly;
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#endif
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#if ENABLE_FEATURE_VI_YANKMARK
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static char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
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static int YDreg, Ureg; // default delete register and orig line for "U"
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static char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
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static char *context_start, *context_end;
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static char *modifying_cmds; // cmds that modify text[]
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#endif
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#if ENABLE_FEATURE_VI_SEARCH
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static char *last_search_pattern; // last pattern from a '/' or '?' search
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#endif
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/* Moving biggest data to malloced space... */
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struct globals {
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/* many references - keep near the top of globals */
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char *text, *end; // pointers to the user data in memory
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char *dot; // where all the action takes place
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#if ENABLE_FEATURE_VI_YANKMARK
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char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
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int YDreg, Ureg; // default delete register and orig line for "U"
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char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
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char *context_start, *context_end;
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#endif
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/* a few references only */
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#if ENABLE_FEATURE_VI_USE_SIGNALS
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jmp_buf restart; // catch_sig()
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#endif
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struct termios term_orig, term_vi; // remember what the cooked mode was
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#if ENABLE_FEATURE_VI_COLON
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char *initial_cmds[3]; // currently 2 entries, NULL terminated
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#endif
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};
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#define G (*ptr_to_globals)
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#define text (G.text )
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#define end (G.end )
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#define dot (G.dot )
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#define reg (G.reg )
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#define YDreg (G.YDreg )
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#define Ureg (G.Ureg )
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#define mark (G.mark )
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#define context_start (G.context_start )
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#define context_end (G.context_end )
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#define restart (G.restart )
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#define term_orig (G.term_orig )
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#define term_vi (G.term_vi )
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#define initial_cmds (G.initial_cmds )
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static void edit_file(char *); // edit one file
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static void do_cmd(char); // execute a command
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@ -258,9 +284,6 @@ static void crash_dummy();
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static void crash_test();
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static int crashme = 0;
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#endif
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#if ENABLE_FEATURE_VI_COLON
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static char *initial_cmds[] = { NULL, NULL , NULL }; // currently 2 entries, NULL terminated
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#endif
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static void write1(const char *out)
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@ -280,6 +303,9 @@ int vi_main(int argc, char **argv)
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#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
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my_pid = getpid();
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#endif
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PTR_TO_GLOBALS = xzalloc(sizeof(G));
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#if ENABLE_FEATURE_VI_CRASHME
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srand((long) my_pid);
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#endif
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@ -350,11 +376,11 @@ int vi_main(int argc, char **argv)
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//----- This is the main file handling loop --------------
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if (optind >= argc) {
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editing = 1; // 0= exit, 1= one file, 2= multiple files
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editing = 1; // 0= exit, 1= one file, 2 = multiple files
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edit_file(0);
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} else {
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for (; optind < argc; optind++) {
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editing = 1; // 0=exit, 1=one file, 2+ =many files
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editing = 1; // 0=exit, 1=one file, 2+ = many files
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free(cfn);
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cfn = xstrdup(argv[optind]);
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edit_file(cfn);
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@ -913,7 +939,7 @@ static void colon(char * buf)
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#endif
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ch = file_insert(fn, q, file_size(fn));
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#if ENABLE_FEATURE_VI_READONLY
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readonly= l;
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readonly = l;
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#endif
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if (ch < 0)
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goto vc1; // nothing was inserted
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@ -1054,7 +1080,7 @@ static void colon(char * buf)
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fn = args;
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}
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#if ENABLE_FEATURE_VI_READONLY
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if ((vi_readonly || readonly) && ! useforce) {
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if ((vi_readonly || readonly) && !useforce) {
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psbs("\"%s\" File is read only", fn);
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goto vc3;
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}
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