vi: handle chars 0x80, 0x81... correctly

This commit is contained in:
Denis Vlasenko 2008-10-20 08:59:03 +00:00
parent 078323010b
commit 4c9e9c4314

View File

@ -57,29 +57,33 @@ enum {
MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN,
};
// Misc. non-Ascii keys that report an escape sequence
#define VI_K_UP (char)128 // cursor key Up
#define VI_K_DOWN (char)129 // cursor key Down
#define VI_K_RIGHT (char)130 // Cursor Key Right
#define VI_K_LEFT (char)131 // cursor key Left
#define VI_K_HOME (char)132 // Cursor Key Home
#define VI_K_END (char)133 // Cursor Key End
#define VI_K_INSERT (char)134 // Cursor Key Insert
#define VI_K_DELETE (char)135 // Cursor Key Insert
#define VI_K_PAGEUP (char)136 // Cursor Key Page Up
#define VI_K_PAGEDOWN (char)137 // Cursor Key Page Down
#define VI_K_FUN1 (char)138 // Function Key F1
#define VI_K_FUN2 (char)139 // Function Key F2
#define VI_K_FUN3 (char)140 // Function Key F3
#define VI_K_FUN4 (char)141 // Function Key F4
#define VI_K_FUN5 (char)142 // Function Key F5
#define VI_K_FUN6 (char)143 // Function Key F6
#define VI_K_FUN7 (char)144 // Function Key F7
#define VI_K_FUN8 (char)145 // Function Key F8
#define VI_K_FUN9 (char)146 // Function Key F9
#define VI_K_FUN10 (char)147 // Function Key F10
#define VI_K_FUN11 (char)148 // Function Key F11
#define VI_K_FUN12 (char)149 // Function Key F12
// "Keycodes" that report an escape sequence.
// We use something which fits into signed char,
// yet doesn't represent any valid Unicode characher.
enum {
VI_K_UP = -1, // cursor key Up
VI_K_DOWN = -2, // cursor key Down
VI_K_RIGHT = -3, // Cursor Key Right
VI_K_LEFT = -4, // cursor key Left
VI_K_HOME = -5, // Cursor Key Home
VI_K_END = -6, // Cursor Key End
VI_K_INSERT = -7, // Cursor Key Insert
VI_K_DELETE = -8, // Cursor Key Insert
VI_K_PAGEUP = -9, // Cursor Key Page Up
VI_K_PAGEDOWN = -10, // Cursor Key Page Down
VI_K_FUN1 = -11, // Function Key F1
VI_K_FUN2 = -12, // Function Key F2
VI_K_FUN3 = -13, // Function Key F3
VI_K_FUN4 = -14, // Function Key F4
VI_K_FUN5 = -15, // Function Key F5
VI_K_FUN6 = -16, // Function Key F6
VI_K_FUN7 = -17, // Function Key F7
VI_K_FUN8 = -18, // Function Key F8
VI_K_FUN9 = -19, // Function Key F9
VI_K_FUN10 = -20, // Function Key F10
VI_K_FUN11 = -21, // Function Key F11
VI_K_FUN12 = -22, // Function Key F12
};
/* vt102 typical ESC sequence */
/* terminal standout start/normal ESC sequence */
@ -171,9 +175,9 @@ struct globals {
char *screen; // pointer to the virtual screen buffer
int screensize; // and its size
int tabstop;
int last_forward_char; // last char searched for with 'f' (int because of Unicode)
char erase_char; // the users erase character
char last_input_char; // last char read from user
char last_forward_char; // last char searched for with 'f'
#if ENABLE_FEATURE_VI_DOT_CMD
smallint adding2q; // are we currently adding user input to q
@ -298,7 +302,7 @@ struct globals {
static int init_text_buffer(char *); // init from file or create new
static void edit_file(char *); // edit one file
static void do_cmd(char); // execute a command
static void do_cmd(int); // execute a command
static int next_tabstop(int);
static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
static char *begin_line(char *); // return pointer to cur line B-o-l
@ -334,8 +338,8 @@ static void rawmode(void); // set "raw" mode on tty
static void cookmode(void); // return to "cooked" mode on tty
// sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready)
static int mysleep(int);
static char readit(void); // read (maybe cursor) key from stdin
static char get_one_char(void); // read 1 char from stdin
static int readit(void); // read (maybe cursor) key from stdin
static int get_one_char(void); // read 1 char from stdin
static int file_size(const char *); // what is the byte size of "fn"
#if ENABLE_FEATURE_VI_READONLY
static int file_insert(const char *, char *, int);
@ -524,7 +528,7 @@ static void edit_file(char *fn)
#if ENABLE_FEATURE_VI_YANKMARK
#define cur_line edit_file__cur_line
#endif
char c;
int c;
int size;
#if ENABLE_FEATURE_VI_USE_SIGNALS
int sig;
@ -622,8 +626,10 @@ static void edit_file(char *fn)
// These are commands that change text[].
// Remember the input for the "." command
if (!adding2q && ioq_start == NULL
&& cmd_mode == 0 /* command mode */
&& c != '\0' && strchr(modifying_cmds, c)
&& cmd_mode == 0 // command mode
&& c > '\0' // exclude NUL and non-ASCII chars
&& c < 0x7f // (Unicode and such)
&& strchr(modifying_cmds, c)
) {
start_new_cmd_q(c);
}
@ -1198,7 +1204,7 @@ static void colon(char *buf)
static void Hit_Return(void)
{
char c;
int c;
standout_start();
write1("[Hit return to continue]");
@ -2191,15 +2197,15 @@ static int mysleep(int hund) // sleep for 'h' 1/100 seconds
}
//----- IO Routines --------------------------------------------
static char readit(void) // read (maybe cursor) key from stdin
static int readit(void) // read (maybe cursor) key from stdin
{
char c;
int c;
int n;
// Known escape sequences for cursor and function keys.
static const struct esc_cmds {
const char seq[4];
char val; //TODO: int? Need to make it at least 8-bit clean!
signed char val;
} esccmds[] = {
{"OA" , VI_K_UP }, // Cursor Key Up
{"OB" , VI_K_DOWN }, // Cursor Key Down
@ -2256,7 +2262,7 @@ static char readit(void) // read (maybe cursor) key from stdin
}
// Grab character to return from buffer
c = readbuffer[0];
c = (unsigned char)readbuffer[0];
// Returning NUL from this routine would be bad.
if (c == '\0')
c = ' ';
@ -2302,7 +2308,7 @@ static char readit(void) // read (maybe cursor) key from stdin
break; // try next seq
i++;
if (i == 4 || !eindex->seq[i]) { // entire seq matched
c = eindex->val;
c = eindex->val; // sign extended!
n = 0;
// n -= i; memmove(...);
// would be more correct,
@ -2322,9 +2328,9 @@ static char readit(void) // read (maybe cursor) key from stdin
}
//----- IO Routines --------------------------------------------
static char get_one_char(void)
static int get_one_char(void)
{
char c;
int c;
#if ENABLE_FEATURE_VI_DOT_CMD
if (!adding2q) {
@ -2335,7 +2341,8 @@ static char get_one_char(void)
c = readit(); // get the users input
} else {
// there is a queue to get chars from first
c = *ioq++;
// careful with correct sign expansion!
c = (unsigned char)*ioq++;
if (c == '\0') {
// the end of the q, read from STDIN
free(ioq_start);
@ -2365,7 +2372,7 @@ static char *get_input_line(const char *prompt)
// char [MAX_INPUT_LEN]
#define buf get_input_line__buf
char c;
int c;
int i;
strcpy(buf, prompt);
@ -2384,7 +2391,8 @@ static char *get_input_line(const char *prompt)
write1("\b \b"); // erase char on screen
if (i <= 0) // user backs up before b-o-l, exit
break;
} else {
} else if (c > 0 && c < 256) { // exclude Unicode
// (TODO: need to handle Unicode)
buf[i] = c;
buf[++i] = '\0';
bb_putchar(c);
@ -2987,13 +2995,14 @@ static void refresh(int full_screen)
//---------------------------------------------------------------------
//----- Execute a Vi Command -----------------------------------
static void do_cmd(char c)
static void do_cmd(int c)
{
const char *msg = msg; // for compiler
char c1, *p, *q, *save_dot;
char *p, *q, *save_dot;
char buf[12];
int dir = dir; // for compiler
int cnt, i, j;
int c1;
// c1 = c; // quiet the compiler
// cnt = yf = 0; // quiet the compiler
@ -3173,21 +3182,18 @@ static void do_cmd(char c)
break;
#if ENABLE_FEATURE_VI_YANKMARK
case '"': // "- name a register to use for Delete/Yank
c1 = get_one_char();
c1 = tolower(c1);
if (islower(c1)) {
YDreg = c1 - 'a';
c1 = (get_one_char() | 0x20) - 'a'; // | 0x20 is tolower()
if ((unsigned)c1 <= 25) { // a-z?
YDreg = c1;
} else {
indicate_error(c);
}
break;
case '\'': // '- goto a specific mark
c1 = get_one_char();
c1 = tolower(c1);
if (islower(c1)) {
c1 = c1 - 'a';
c1 = (get_one_char() | 0x20) - 'a';
if ((unsigned)c1 <= 25) { // a-z?
// get the b-o-l
q = mark[(unsigned char) c1];
q = mark[c1];
if (text <= q && q < end) {
dot = q;
dot_begin(); // go to B-o-l
@ -3206,12 +3212,10 @@ static void do_cmd(char c)
// between text[0] and dot then this mark will not point to the
// correct location! It could be off by many lines!
// Well..., at least its quick and dirty.
c1 = get_one_char();
c1 = tolower(c1);
if (islower(c1)) {
c1 = c1 - 'a';
c1 = (get_one_char() | 0x20) - 'a';
if ((unsigned)c1 <= 25) { // a-z?
// remember the line
mark[(int) c1] = dot;
mark[c1] = dot;
} else {
indicate_error(c);
}
@ -3546,12 +3550,11 @@ static void do_cmd(char c)
end_cmd_q(); // stop adding to q
#endif
break;
case 'g': // 'gg' goto a line number (from vim)
// (default to first line in file)
case 'g': // 'gg' goto a line number (vim) (default: very first line)
c1 = get_one_char();
if (c1 != 'g') {
buf[0] = 'g';
buf[1] = c1;
buf[1] = c1; // TODO: if Unicode?
buf[2] = '\0';
not_implemented(buf);
break;
@ -3804,7 +3807,7 @@ static void do_cmd(char c)
do_cmd(';');
if (*dot == last_forward_char)
dot_left();
last_forward_char= 0;
last_forward_char = 0;
break;
case 'w': // w- forward a word
if (cmdcnt-- > 1) {