diff options
Diffstat (limited to 'editors')
| -rw-r--r-- | editors/Config.in | 10 | ||||
| -rw-r--r-- | editors/vi.c | 61 |
2 files changed, 50 insertions, 21 deletions
diff --git a/editors/Config.in b/editors/Config.in index 7c06678..58959aa 100644 --- a/editors/Config.in +++ b/editors/Config.in @@ -98,6 +98,16 @@ config FEATURE_VI_MAX_LEN Contrary to what you may think, this is not eating much. Make it smaller than 4k only if you are very limited on memory. +config FEATURE_VI_8BIT + bool "Allow vi to display 8-bit chars (otherwise shows dots)" + default y + depends on VI + help + If your terminal can display characters with high bit set, + you may want to enable this. Note: vi is not Unicode-capable. + If your terminal combines several 8-bit bytes into one character + (as in Unicode mode), this will not work properly. + config FEATURE_VI_COLON bool "Enable \":\" colon commands (no \"ex\" mode)" default y diff --git a/editors/vi.c b/editors/vi.c index e1aabab..65a82b1 100644 --- a/editors/vi.c +++ b/editors/vi.c @@ -25,13 +25,27 @@ #define ENABLE_FEATURE_VI_CRASHME 0 + #if ENABLE_LOCALE_SUPPORT -#define Isprint(c) isprint((c)) + +#if ENABLE_FEATURE_VI_8BIT +#define Isprint(c) isprint(c) +#else +#define Isprint(c) (isprint(c) && (unsigned char)(c) < 0x7f) +#endif + #else + /* 0x9b is Meta-ESC */ +#if ENABLE_FEATURE_VI_8BIT #define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b) +#else +#define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f) #endif +#endif + + enum { MAX_TABSTOP = 32, // sanity limit // User input len. Need not be extra big. @@ -1162,7 +1176,7 @@ static int next_tabstop(int col) } //----- Synchronize the cursor to Dot -------------------------- -static void sync_cursor(char * d, int *row, int *col) +static void sync_cursor(char *d, int *row, int *col) { char *beg_cur; // begin and end of "d" line char *end_scr; // begin and end of screen @@ -1209,19 +1223,22 @@ static void sync_cursor(char * d, int *row, int *col) // find out what col "d" is on co = 0; - do { // drive "co" to correct column + while (tp < d) { // drive "co" to correct column if (*tp == '\n') //vda || *tp == '\0') break; if (*tp == '\t') { - if (d == tp && cmd_mode) { /* handle tabs like real vi */ + // handle tabs like real vi + if (d == tp && cmd_mode) { break; } else { co = next_tabstop(co); } - } else if (*tp < ' ' || *tp == 127) { - co++; // display as ^X, use 2 columns + } else if ((unsigned char)*tp < ' ' || *tp == 0x7f) { + co++; // display as ^X, use 2 columns } - } while (tp++ < d && ++co); + co++; + tp++; + } // "co" is the column where "dot" is. // The screen has "columns" columns. @@ -1367,15 +1384,17 @@ static char *move_to_col(char *p, int l) p = begin_line(p); co = 0; - do { + while (co < l && p < end) { if (*p == '\n') //vda || *p == '\0') break; if (*p == '\t') { co = next_tabstop(co); } else if (*p < ' ' || *p == 127) { - co++; // display as ^X, use 2 columns + co++; // display as ^X, use 2 columns } - } while (++co <= l && p++ < end); + co++; + p++; + } return p; } @@ -2081,6 +2100,7 @@ static void cookmode(void) #if ENABLE_FEATURE_VI_USE_SIGNALS static void winch_sig(int sig ATTRIBUTE_UNUSED) { + // FIXME: do it in main loop!!! signal(SIGWINCH, winch_sig); if (ENABLE_FEATURE_VI_WIN_RESIZE) { get_terminal_width_height(0, &columns, &rows); @@ -2735,11 +2755,9 @@ static void redraw(int full_screen) } //----- Format a text[] line into a buffer --------------------- -// Returns number of leading chars which should be ignored -// (return value is always <= offset) static char* format_line(char *src, int li) { - char c; + unsigned char c; int co; int ofs = offset; char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2] @@ -2747,8 +2765,8 @@ static char* format_line(char *src, int li) memset(dest, ' ', MAX_SCR_COLS + MAX_TABSTOP * 2); c = '~'; // char in col 0 in non-existent lines is '~' - for (co = 0; co < MAX_SCR_COLS + MAX_TABSTOP; co++) { - // are there chars in text[] and have we gone past the end + for (co = 0; co < columns + MAX_TABSTOP; co++) { + // have we gone past the end? if (src < end) { c = *src++; if (c == '\n') @@ -2756,7 +2774,7 @@ static char* format_line(char *src, int li) if ((c & 0x80) && !Isprint(c)) { c = '.'; } - if ((unsigned char)c < ' ' || c == 0x7f) { + if (c < ' ' || c == 0x7f) { if (c == '\t') { c = ' '; // co % 8 != 7 @@ -2907,14 +2925,15 @@ static void refresh(int full_screen) //----- Execute a Vi Command ----------------------------------- static void do_cmd(char c) { - const char *msg; + const char *msg = msg; // for compiler char c1, *p, *q, *save_dot; char buf[12]; - int cnt, i, j, dir, yf; + int dir = dir; // for compiler + int cnt, i, j, yf; -// c1 = c; // quiet the compiler -// cnt = yf = dir = 0; // quiet the compiler -// msg = p = q = save_dot = buf; // quiet the compiler +// c1 = c; // quiet the compiler +// cnt = yf = 0; // quiet the compiler +// msg = p = q = save_dot = buf; // quiet the compiler memset(buf, '\0', 12); show_status_line(); |