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vi: code shrink

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function                                             old     new   delta
get_one_char                                         108     103      -5
edit_file                                            651     644      -7
do_cmd                                              4696    4688      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-20)             Total: -20 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2019-04-01 16:15:51 +02:00
parent 6ce60b9cca
commit 2a57608f67
1 changed files with 29 additions and 31 deletions
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60
editors/vi.c
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@ -1029,43 +1029,41 @@ static int readit(void) // read (maybe cursor) key from stdin
return c;
}
#if ENABLE_FEATURE_VI_DOT_CMD
static int get_one_char(void)
{
int c;
#if ENABLE_FEATURE_VI_DOT_CMD
if (!adding2q) {
// we are not adding to the q.
// but, we may be reading from a q
if (ioq == 0) {
// there is no current q, read from STDIN
c = readit(); // get the users input
} else {
// there is a queue to get chars from first
// but, we may be reading from a saved q.
// (checking "ioq" for NULL is wrong, it's not reset to NULL
// when done - "ioq_start" is reset instead).
if (ioq_start != NULL) {
// there is a queue to get chars from.
// careful with correct sign expansion!
c = (unsigned char)*ioq++;
if (c == '\0') {
// the end of the q, read from STDIN
free(ioq_start);
ioq_start = ioq = 0;
c = readit(); // get the users input
}
}
} else {
// adding STDIN chars to q
c = readit(); // get the users input
if (lmc_len >= MAX_INPUT_LEN - 1) {
status_line_bold("last_modifying_cmd overrun");
} else {
// add new char to q
last_modifying_cmd[lmc_len++] = c;
if (c != '\0')
return c;
// the end of the q
free(ioq_start);
ioq_start = NULL;
// read from STDIN:
}
return readit();
}
// we are adding STDIN chars to q.
c = readit();
if (lmc_len >= MAX_INPUT_LEN - 1) {
status_line_bold("last_modifying_cmd overrun");
} else {
last_modifying_cmd[lmc_len++] = c;
}
#else
c = readit(); // get the users input
#endif /* FEATURE_VI_DOT_CMD */
return c;
}
#else
# define get_one_char() readit()
#endif
// Get input line (uses "status line" area)
static char *get_input_line(const char *prompt)
@ -1781,7 +1779,7 @@ static void start_new_cmd_q(char c)
// get buffer for new cmd
// if there is a current cmd count put it in the buffer first
if (cmdcnt > 0) {
lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
lmc_len = sprintf(last_modifying_cmd, "%u%c", cmdcnt, c);
} else { // just save char c onto queue
last_modifying_cmd[0] = c;
lmc_len = 1;
@ -3415,9 +3413,8 @@ static void do_cmd(int c)
case '.': // .- repeat the last modifying command
// Stuff the last_modifying_cmd back into stdin
// and let it be re-executed.
if (lmc_len > 0) {
last_modifying_cmd[lmc_len] = 0;
ioq = ioq_start = xstrdup(last_modifying_cmd);
if (lmc_len != 0) {
ioq = ioq_start = xstrndup(last_modifying_cmd, lmc_len);
}
break;
#endif
@ -4221,7 +4218,7 @@ static void edit_file(char *fn)
c = '\0';
#if ENABLE_FEATURE_VI_DOT_CMD
free(ioq_start);
ioq = ioq_start = NULL;
ioq_start = NULL;
lmc_len = 0;
adding2q = 0;
#endif
@ -4273,7 +4270,8 @@ static void edit_file(char *fn)
#if ENABLE_FEATURE_VI_DOT_CMD
// These are commands that change text[].
// Remember the input for the "." command
if (!adding2q && ioq_start == NULL
if (!adding2q
&& ioq_start == NULL
&& cmd_mode == 0 // command mode
&& c > '\0' // exclude NUL and non-ASCII chars
&& c < 0x7f // (Unicode and such)