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vi.c
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/*
* NEXTVI Editor
*
* Copyright (C) 2015-2019 Ali Gholami Rudi <ali at rudi dot ir>
* Copyright (C) 2020-2025 Kyryl Melekhin <k dot melekhin at gmail dot com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <signal.h>
#include <unistd.h>
#include <poll.h>
#include <termios.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include "vi.h"
#include "conf.c"
#include "ex.c"
#include "lbuf.c"
#include "led.c"
#include "regex.c"
#include "ren.c"
#include "term.c"
#include "uc.c"
int vi_hidch; /* show hidden chars */
int vi_insmov; /* moving in insert outside of insertion sbuf */
int vi_lncol; /* line numbers cursor offset */
static int vi_lnnum; /* line numbers */
static int vi_mod; /* screen should be redrawn -
bit 1: whole screen, bit 2: current line, bit 3: update vi_col) */
static char vi_word_m[] = "\0leEwW"; /* line word navigation */
static char *vi_word = vi_word_m;
static char *_vi_word = vi_word_m;
static int vi_wsel = 1;
static int vi_rshift; /* row shift for vi_word */
static int vi_arg1, vi_arg2; /* the first and second arguments */
static char vi_msg[EXLEN+128]; /* current message */
static char vi_charlast[8]; /* the last character searched via f, t, F, or T */
static int vi_charcmd; /* the character finding command */
static int vi_ybuf; /* current yank buffer */
static int vi_col; /* the column requested by | command */
static int vi_scrollud; /* scroll amount for ^u and ^d */
static int vi_scrolley; /* scroll amount for ^e and ^y */
static int vi_cndir = 1; /* ^n direction */
static int vi_status; /* always show status */
static int vi_tsm; /* type of the status message */
static int vi_joinmode = 1; /* 1: insert extra space for pad 0: raw line join */
static int vi_nlword; /* new line mode for eEwWbB */
static int vi_rln[256];
void *emalloc(size_t size)
{
void *p;
if (!(p = malloc(size))) {
fprintf(stderr, "\nmalloc: out of memory\n");
exit(EXIT_FAILURE);
}
return p;
}
void *erealloc(void *p, size_t size)
{
if (!(p = realloc(p, size))) {
fprintf(stderr, "\nrealloc: out of memory\n");
exit(EXIT_FAILURE);
}
return p;
}
static void reverse_in_place(char *str, int len)
{
char *p1 = str;
char *p2 = str + len - 1;
while (p1 < p2) {
char tmp = *p1;
*p1++ = *p2;
*p2-- = tmp;
}
}
char *itoa(int n, char s[])
{
int i = 0, sign;
if ((sign = n) < 0) /* record sign */
n = -n; /* make n positive */
do { /* generate digits in reverse order */
s[i++] = n % 10 + '0'; /* get next digit */
} while ((n /= 10) > 0); /* delete it */
if (sign < 0)
s[i++] = '-';
s[i] = '\0';
reverse_in_place(s, i);
return &s[i];
}
static void vi_drawmsg(void)
{
if (vi_msg[0]) {
syn_blockhl = 0;
syn_setft("/-");
preserve(int, xtd, 2)
led_recrender(vi_msg, xrows, 0, 0, xcols)
restore(xtd)
syn_setft(ex_ft);
}
}
static int vi_nextcol(char *ln, int dir, int *off)
{
int o = ren_off(ln, ren_next(ln, ren_pos(ln, *off), dir));
if (*rstate->chrs[o] == '\n')
return -1;
*off = o;
return 0;
}
#define vi_drawnum(func) \
{ \
nrow = xrow; \
noff = xoff; \
for (i = 0, ret = 0;; i++) { \
l1 = ren_next(c, ren_pos(c, noff), 1)-1-xleft+vi_lncol; \
if (l1 > xcols || l1 < 0 || ret) \
break; \
i = i > 99 ? i % 100 : i; \
itoa(i%10 ? i%10 : i, snum); \
tmp[l1] = *snum; \
ret = func; \
} } \
static void vi_drawrow(int row)
{
int l1, i, i1, lnnum = vi_lnnum;
char *c, *s;
static char ch1[1] = "~";
static char ch2[1] = "";
if (*vi_word) {
int noff, nrow, ret;
s = lbuf_get(xb, row - vi_rshift);
c = lbuf_get(xb, xrow);
if (row == xtop + xrows-1 || !c || *c == '\n')
vi_rshift = 0;
if (row != xrow+1 || !c || *c == '\n')
goto skip;
char tmp[xcols+3], snum[100];
memset(tmp, ' ', xcols+1);
tmp[xcols+1] = '\n';
tmp[xcols+2] = '\0';
i1 = isupper((unsigned char)*vi_word);
if (*vi_word == 'e' || *vi_word == 'E')
vi_drawnum(lbuf_wordend(xb, i1, 2, &nrow, &noff))
else if (*vi_word == 'w' || *vi_word == 'W')
vi_drawnum(lbuf_wordbeg(xb, i1, 2, &nrow, &noff))
if (*vi_word == 'l') {
vi_drawnum(vi_nextcol(c, 1, &noff))
vi_drawnum(vi_nextcol(c, -1, &noff))
} else
vi_drawnum(lbuf_wordend(xb, i1, -2, &nrow, &noff))
tmp[ren_next(c, ren_pos(c, xoff), 1)-1-xleft+vi_lncol] = *vi_word;
preserve(int, xorder, 0)
preserve(int, syn_blockhl, 0)
preserve(int, xtd, dir_context(c) * 2)
vi_rshift = (row != xtop + xrows-1);
syn_setft("/#");
rstate++;
led_recrender(tmp, row - xtop, 0, 0, xcols)
rstate--;
syn_setft(ex_ft);
restore(xorder)
restore(syn_blockhl)
restore(xtd)
return;
}
s = lbuf_get(xb, row);
skip:
if (!s)
s = row ? ch1 : ch2;
else if (lnnum) {
char tmp[100], tmp1[100], *p;
c = tmp, i = 0, i1 = 0;
if (lnnum == 1 || lnnum & 2) {
c = itoa(row+1-vi_rshift, tmp);
*c++ = ' ';
i = snprintf(0, 0, "%d", xtop+xrows);
}
p = c;
if (lnnum == 1 || lnnum & 4 || lnnum & 8) {
c = itoa(abs(xrow-row+vi_rshift), c);
*c++ = ' ';
i1 = snprintf(0, 0, "%d", xrows);
}
*c = '\0';
l1 = (c - tmp) + (i+i1 - (strlen(tmp) - !!i - !!i1));
vi_lncol = dir_context(s) < 0 ? 0 : l1;
memset(c, ' ', l1 - (c - tmp));
c[l1 - (c - tmp)] = '\0';
led_crender(s, row - xtop, l1, xleft, xleft + xcols - l1);
preserve(int, syn_blockhl, 0)
syn_setft("/##");
if ((lnnum == 1 || lnnum & 4) && xled && !xleft && vi_lncol) {
for (i1 = 0; strchr(" \t", *rstate->chrs[ren_off(s, i1)]);)
i1 = ren_next(s, i1, 1);
i1 -= (itoa(abs(xrow-row+vi_rshift), tmp1) - tmp1)+1;
if (i1 >= 0) {
memset(p, ' ', strlen(p));
led_prender(tmp1, row - xtop, l1+i1, 0, l1);
}
}
led_prender(tmp, row - xtop, 0, 0, l1);
syn_setft(ex_ft);
restore(syn_blockhl)
return;
}
led_crender(s, row - xtop, 0, xleft, xleft + xcols);
}
/* redraw the screen */
static void vi_drawagain(int i)
{
syn_scdir(0);
syn_blockhl = 0;
for (; i < xtop + xrows; i++)
vi_drawrow(i);
}
/* update the screen */
static void vi_drawupdate(int i)
{
int n;
term_pos(0, 0);
term_room(i);
syn_scdir(i);
if (i < 0) {
n = MIN(-i, xrows);
for (i = 0; i < n; i++)
vi_drawrow(xtop + xrows - n + i);
} else {
n = MIN(i, xrows);
for (i = n-1; i >= 0; i--)
vi_drawrow(xtop + i);
}
}
static void vi_wait(void)
{
if (xmpt > 1) {
strcpy(vi_msg, "[any key to continue] ");
vi_drawmsg();
term_read();
vi_msg[0] = '\0';
vi_mod |= 1;
}
xmpt = xmpt > 0 ? 0 : xmpt;
}
static char *vi_prompt(char *msg, char *insert, int *kmap, int *mlen)
{
char *s;
term_pos(xrows, led_pos(msg, 0));
vi_lncol = 0;
syn_setft("/-");
s = led_prompt(msg, "", insert, kmap);
syn_setft(ex_ft);
vi_mod |= 1;
*mlen = s ? strlen(msg) : 0;
if (!s)
return NULL;
strncpy(vi_msg, s, sizeof(vi_msg) - 1);
return s;
}
static char *vi_enprompt(char *msg, char *insert, int *mlen)
{
int kmap = 0;
return vi_prompt(msg, insert, &kmap, mlen);
}
/* read an ex input line */
char *ex_read(char *msg)
{
int c;
if (!(xvis & 2)) {
int oleft = xleft;
syn_blockhl = 0;
syn_setft("/-");
char *s = led_prompt(msg, "", NULL, &xkmap);
xleft = oleft;
if (s && (!msg || strcmp(s, msg)))
term_chr('\n');
syn_setft(ex_ft);
return s;
}
sbuf_smake(sb, 128)
while ((c = term_read()) != EOF && c != '\n')
sbuf_chr(sb, c)
if (c == EOF) {
free(sb->s);
return NULL;
}
sbufn_sret(sb)
}
/* print an ex output line */
void ex_cprint(char *line, int r, int c, int ln)
{
syn_blockhl = 0;
if (!(xvis & 4)) {
if (xmpt == 1)
term_chr('\n');
if (isupper(xpr) && xmpt == 1 && !strchr(line, '\n'))
vi_regputraw(xpr, "\n", 1, 1);
term_pos(xrows, led_pos(vi_msg, 0));
snprintf(vi_msg+c, sizeof(vi_msg)-c, "%s", line);
}
if (xpr)
vi_regputraw(xpr, line, !!strchr(line, '\n'), 1);
if (xvis & 2) {
term_write(line, dstrlen(line, '\n'))
term_write("\n", 1)
return;
}
syn_setft("/-");
led_recrender(line, r, c, xleft, xleft + xcols - c)
syn_setft(ex_ft);
if (ln && (xvis & 4 || xmpt > 0)) {
term_chr('\n');
if (isupper(xpr) && !strchr(line, '\n'))
vi_regputraw(xpr, "\n", 1, 1);
}
xmpt += !(xvis & 4) && xmpt >= 0 && (ln || xmpt);
}
static int vi_yankbuf(void)
{
int c = term_read();
if (c == '"')
return term_read();
term_dec()
return 0;
}
static int vi_prefix(void)
{
int n = 0;
int c = term_read();
if (c >= '1' && c <= '9') {
while (c >= '0' && c <= '9') {
n = n * 10 + c - '0';
c = term_read();
}
}
return n;
}
static int vi_digit(void)
{
int c = term_read();
if (c >= '0' && c <= '9')
return c - '0';
return -1;
}
static int vi_off2col(struct lbuf *lb, int row, int off)
{
char *ln = lbuf_get(lb, row);
return ln ? ren_pos(ln, off) : 0;
}
static int vi_col2off(struct lbuf *lb, int row, int col)
{
char *ln = lbuf_get(lb, row);
if (!ln)
return 0;
ren_state *r = ren_position(ln);
if (col >= r->cmax)
return r->col[r->cmax - !!r->cmax];
return r->col[col];
}
static int vi_findchar(struct lbuf *lb, char *cs, int cmd, int n, int *row, int *off)
{
if (vi_charlast != cs)
strcpy(vi_charlast, cs);
vi_charcmd = cmd;
return lbuf_findchar(lb, cs, cmd, n, row, off);
}
static int vi_search(int cmd, int cnt, int *row, int *off, int msg)
{
int i, dir;
if (cmd == '/' || cmd == '?') {
char sign[4] = {cmd};
char *kw = vi_prompt(sign, NULL, &xkmap, &i);
if (!kw)
return 1;
ex_krsset(kw + i, cmd == '/' ? +2 : -2);
free(kw);
} else if (msg)
ex_krsset(xregs['/'], xkwddir);
if (!lbuf_len(xb) || (!xkwddir || !xkwdrs))
return 1;
dir = cmd == 'N' ? -xkwddir : xkwddir;
for (i = 0; i < cnt; i++) {
if (lbuf_search(xb, xkwdrs, dir, row, off,
lbuf_len(xb), msg ? dir : -1)) {
snprintf(vi_msg, msg, "\"%s\" not found %d/%d",
xregs['/'], i, cnt);
return 1;
}
}
return 0;
}
/* read a line motion */
static int vi_motionln(int *row, int cmd)
{
int cnt = (vi_arg1 ? vi_arg1 : 1) * (vi_arg2 ? vi_arg2 : 1);
int c = term_read();
int mark, mark_row, mark_off;
switch (c) {
case '\n':
case '+':
case 'j':
*row = MIN(*row + cnt, lbuf_len(xb) - 1);
break;
case 'k':
case '-':
*row = MAX(*row - cnt, 0);
break;
case '\'':
if ((mark = term_read()) <= 0)
return -1;
if (lbuf_jump(xb, mark, &mark_row, &mark_off))
return -1;
*row = mark_row;
break;
case 'G':
*row = (vi_arg1 || vi_arg2) ? cnt - 1 : lbuf_len(xb) - 1;
break;
case 'H':
*row = MIN(xtop + cnt - 1, lbuf_len(xb) - 1);
break;
case 'L':
*row = MIN(xtop + xrows - 1 - cnt + 1, lbuf_len(xb) - 1);
break;
case 'M':
*row = MIN(xtop + xrows / 2, lbuf_len(xb) - 1);
break;
default:
if (c == cmd) {
*row = MIN(*row + cnt - 1, lbuf_len(xb) - 1);
break;
}
if (c == '%' && (vi_arg1 || vi_arg2)) {
if (cnt > 100)
return -1;
*row = lbuf_len(xb) * cnt / 100;
break;
}
term_dec()
return 0;
}
if (*row < 0)
*row = 0;
return c;
}
static char *vi_curword(struct lbuf *lb, int row, int off, int n)
{
char *ln = lbuf_get(lb, row);
char *beg, *end;
if (!ln || !n)
return NULL;
beg = uc_chr(ln, ren_noeol(ln, off));
end = beg;
while (beg > ln && uc_kind(uc_beg(ln, beg - 1)) == 1)
beg = uc_beg(ln, beg - 1);
for (int i = n; uc_len(end) && i > 0; end++, i--)
while (uc_len(end) && uc_kind(end) == 1)
end += uc_len(end);
if (beg >= --end)
return NULL;
sbuf_smake(sb, (end - beg)+64)
if (n > 1) {
for (; beg != end; beg++) {
if (*beg == xsep)
sbuf_chr(sb, '\\')
if (strchr("!#%{}[]().?\\^$|*/+", *beg))
sbuf_chr(sb, '\\')
sbuf_chr(sb, *beg)
}
} else {
sbuf_str(sb, "\\<")
sbuf_mem(sb, beg, end - beg)
sbuf_str(sb, "\\>")
}
sbufn_sret(sb)
}
void vi_regputraw(unsigned char c, const char *s, int ln, int append)
{
char *pre = append && xregs[tolower(c)] ? xregs[tolower(c)] : "";
int len1 = strlen(pre), len2 = strlen(s);
char *buf = emalloc(len1 + len2 + 4);
memcpy(buf, pre, len1);
memcpy(buf+len1, s, len2);
memset(buf+len1+len2, '\0', 4);
free(xregs[tolower(c)]);
xregs[tolower(c)] = buf;
vi_rln[tolower(c)] = ln;
}
void vi_regput(int c, const char *s, int ln)
{
int i;
char *i_s;
if (ln || strchr(s, '\n')) {
for (i = 8; i > 0; i--)
if ((i_s = xregs['0'+i]))
vi_regputraw('0' + i + 1, i_s, vi_rln['0'+i], 0);
vi_regputraw('1', s, ln, 0);
} else if (xregs[c])
vi_regputraw('0', xregs[c], ln, 0);
vi_regputraw(c, s, ln, isupper(c));
}
rset *fsincl;
char *fs_exdir;
static int fspos;
static int fsdir;
static char *file_calc(char *path)
{
struct dirent *dp;
struct stat statbuf;
int len;
DIR *dir = opendir(path);
int pathlen = strlen(path);
if (!dir)
return path + pathlen;
while ((dp = readdir(dir)) != NULL) {
len = strlen(dp->d_name)+1;
path[pathlen] = '/';
memcpy(&path[pathlen+1], dp->d_name, len);
if (fsincl && rset_find(fsincl, path, NULL, 0) < 0)
continue;
if (lstat(path, &statbuf) >= 0 && S_ISREG(statbuf.st_mode))
temp_write(1, path);
}
closedir(dir);
path[pathlen] = '/';
path[pathlen+1] = '\0';
return path + pathlen + 1;
}
void dir_calc(char *path)
{
struct dirent *dirp;
struct stat statbuf;
char *ptr;
int i = 0;
char cur_dir[4096];
char *ptrs[1024];
DIR *dps[1024];
DIR *dp;
strcpy(cur_dir, path);
temp_pos(1, -1, 0, 0);
fspos = 0;
goto start;
while (i > 0) {
while ((dirp = readdir(dp)) != NULL) {
if (strcmp(dirp->d_name, ".") == 0 ||
strcmp(dirp->d_name, "..") == 0)
continue;
strcpy(ptr, dirp->d_name);
if (lstat(cur_dir, &statbuf) >= 0 &&
S_ISDIR(statbuf.st_mode)) {
start:
ptr = file_calc(cur_dir);
if ((dp = opendir(cur_dir)) == NULL)
return;
dps[++i] = dp;
ptrs[i] = ptr;
}
}
closedir(dp);
dp = dps[--i];
ptr = ptrs[i];
}
}
#define fssearch() \
len = lbuf_s(path)->len; \
path[len] = '\0'; \
ret = ex_edit(path, len); \
path[len] = '\n'; \
if (ret && xrow) { \
*row = xrow; *off = xoff; /* short circuit */ \
if (!vi_search('n', cnt, row, off, 0)) \
return 1; \
++*off; \
} else { \
*row = 0; *off = 0; \
} \
if (!vi_search(*row ? 'N' : 'n', cnt, row, off, 0)) \
return 1; \
static int fs_search(int cnt, int *row, int *off)
{
char *path;
int again = 0, ret, len;
wrap:
while (fspos < lbuf_len(tempbufs[1].lb)) {
path = tempbufs[1].lb->ln[fspos++];
fssearch()
}
if (fspos == lbuf_len(tempbufs[1].lb) && !again) {
fspos = 0;
again = 1;
goto wrap;
}
return 0;
}
static int fs_searchback(int cnt, int *row, int *off)
{
char *path;
int ret, len;
while (--fspos >= 0) {
path = tempbufs[1].lb->ln[fspos];
fssearch()
}
return 0;
}
static void vc_status(int type)
{
int cp, l, col, buf;
char cbuf[8] = "", *c;
col = vi_off2col(xb, xrow, xoff);
col = ren_cursor(lbuf_get(xb, xrow), col) + 1;
if (type && lbuf_get(xb, xrow)) {
c = rstate->chrs[xoff];
uc_code(cp, c, l)
memcpy(cbuf, c, l);
snprintf(vi_msg, sizeof(vi_msg), "<%s> %08x %dL %dW S%d O%d C%d",
cbuf, cp, l, rstate->wid[xoff], (int)(c - lbuf_get(xb, xrow)),
xoff, col);
return;
}
buf = istempbuf(ex_buf) ? tempbufs - ex_buf - 1 : ex_buf - bufs;
snprintf(vi_msg, sizeof(vi_msg),
"\"%s\"%s%dL %d%% L%d C%d B%d",
ex_path[0] ? ex_path : "unnamed",
lbuf_modified(xb) ? "* " : " ", lbuf_len(xb),
xrow * 100 / MAX(1, lbuf_len(xb)-1), xrow+1, col, buf);
}
/* read a motion */
static int vi_motion(int *row, int *off)
{
static char ca_dir;
static sbuf *savepath[10];
static int srow[10], soff[10], lkwdcnt;
int cnt = (vi_arg1 ? vi_arg1 : 1) * (vi_arg2 ? vi_arg2 : 1);
int dir, mark, mark_row, mark_off;
char *cs;
int mv, i;
if ((mv = vi_motionln(row, 0))) {
*off = -1;
return mv;
}
mv = term_read();
switch (mv) {
case ',':
cnt = -cnt;
case ';':
if (!vi_charlast[0])
return -1;
if (vi_findchar(xb, vi_charlast, vi_charcmd, cnt, row, off))
return -1;
break;
case 'h':
case 'l':
if (!(cs = lbuf_get(xb, *row)))
return -1;
dir = dir_context(cs);
dir = mv == 'h' ? -dir : dir;
for (i = 0; i < cnt; i++)
if (vi_nextcol(cs, dir, off))
break;
break;
case ' ':
case 127:
case TK_CTL('h'):
dir = mv == ' ' ? +1 : -1;
if (!lbuf_get(xb, *row))
break;
mark = ren_position(lbuf_get(xb, *row))->n;
for (i = 0; i < cnt; i++, *off += dir)
if (*off + dir < 0 || *off + dir >= mark)
break;
break;
case 'f':
case 'F':
case 't':
case 'T':
if (!(cs = led_read(&xkmap, term_read())))
return -1;
if (vi_findchar(xb, cs, mv, cnt, row, off))
return -1;
break;
case 'b':
case 'B':
mark = mv == 'B';
for (i = 0; i < cnt; i++)
if (lbuf_wordend(xb, mark, -(vi_nlword+1), row, off))
break;
break;
case 'e':
case 'E':
mark = mv == 'E';
for (i = 0; i < cnt; i++)
if (lbuf_wordend(xb, mark, vi_nlword+1, row, off))
break;
break;
case 'w':
case 'W':
mark = mv == 'W';
for (i = 0; i < cnt; i++)
if (lbuf_wordbeg(xb, mark, vi_nlword+1, row, off))
break;
break;
case '{':
case '}':
case '[':
case ']':
dir = mv == '{' || mv == '[' ? 1 : -1;
mark = mv == '[' || mv == ']' ? '\n' : '{';
for (i = 0; i < cnt; i++)
if (lbuf_sectionbeg(xb, dir, row, off, mark))
break;
break;
case TK_CTL(']'): /* note: this is also ^5 as per ascii */
case TK_CTL('p'):
#define open_saved(n) \
if (savepath[n]) { \
*row = srow[n]; *off = soff[n]; \
ex_edit(savepath[n]->s, savepath[n]->s_n); \
} \
if (vi_arg1 && (cs = vi_curword(xb, *row, *off, cnt))) {
ex_krsset(cs, +1);
free(cs);
}
struct buf* tmpex_buf = istempbuf(ex_buf) ? ex_pbuf : ex_buf;
if (mv == TK_CTL(']')) {
if (vi_arg1 || lkwdcnt != xkwdcnt)
term_exec("", 1, '&')
lkwdcnt = xkwdcnt;
fspos += fsdir < 0 ? 1 : 0;
fspos = MIN(fspos, lbuf_len(tempbufs[1].lb));
fs_search(1, row, off);
fsdir = 1;
} else {
fspos -= fsdir > 0 ? 1 : 0;
if (!fs_searchback(1, row, off)) {
open_saved(0)
fsdir = 0;
} else
fsdir = -1;
fspos = MAX(fspos, 0);
}
if (tmpex_buf != ex_buf)
ex_pbuf = tmpex_buf;
bsync_ret:
for (i = xbufcur-1; i >= 0 && bufs[i].mtime == -1; i--)
ex_bufpostfix(&bufs[i], 1);
syn_setft(ex_ft);
vc_status(0);
return 'n';
case TK_CTL('t'):
if (vi_arg1 % 2 == 0 && vi_arg1 < LEN(srow) * 2) {
vi_arg1 /= 2;
if (!savepath[vi_arg1])
sbuf_make(savepath[vi_arg1], 128)
sbuf_cut(savepath[vi_arg1], 0)
sbufn_str(savepath[vi_arg1], ex_path)
srow[vi_arg1] = *row; soff[vi_arg1] = *off;
break;
}
open_saved(vi_arg1 / 2)
goto bsync_ret;
case '0':
*off = 0;
break;
case '^':
*off = lbuf_indents(xb, *row);
break;
case '$':
*off = lbuf_eol(xb, *row);
break;
case '|':
vi_col = cnt - 1;
break;
case '/':
case '?':
case 'n':
case 'N':
if (vi_search(mv, cnt, row, off, sizeof(vi_msg)))
return -1;
break;
case TK_CTL('a'):
if (!(cs = vi_curword(xb, *row, *off, cnt)))
return -1;
ex_krsset(cs, +1);
free(cs);
if (vi_search(ca_dir ? 'N' : 'n', 1, row, off, sizeof(vi_msg))) {
ca_dir = !ca_dir;
if (vi_search(ca_dir ? 'N' : 'n', 1, row, off, sizeof(vi_msg)))
return -1;
}
break;
case '`':
if ((mark = term_read()) <= 0)
return -1;
if (lbuf_jump(xb, mark, &mark_row, &mark_off))
return -1;
*row = mark_row;
*off = mark_off;
break;
case '%':
if (lbuf_pair(xb, row, off))
return -1;
break;
default:
return 0;
}
return mv;
}
static void swap(int *a, int *b)
{
int t = *a;
*a = *b;
*b = t;
}
static char *lbuf_region(struct lbuf *lb, int r1, int o1, int r2, int o2)
{
char *s1, *s2, *s3;
if (r1 == r2)
return uc_sub(lbuf_get(lb, r1), o1, o2);
sbuf_smake(sb, 1024)
s1 = uc_chr(lbuf_get(lb, r1), o1);
s3 = uc_sub(lbuf_get(lb, r2), 0, o2);
s2 = lbuf_cp(lb, r1 + 1, r2);
sbuf_str(sb, s1)
sbuf_str(sb, s2)
sbuf_str(sb, s3)
free(s2);
free(s3);
sbufn_sret(sb)
}
static void vi_yank(int r1, int o1, int r2, int o2, int lnmode)
{
char *region;
region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2);
vi_regput(vi_ybuf, region, lnmode);
free(region);
xrow = r1;
xoff = lnmode ? xoff : o1;
}
static void vi_delete(int r1, int o1, int r2, int o2, int lnmode)
{
char *pref, *post;
char *region;
region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2);
vi_regput(vi_ybuf, region, lnmode);
free(region);
pref = lnmode ? uc_dup("") : uc_sub(lbuf_get(xb, r1), 0, o1);
post = lnmode ? "\n" : uc_chr(lbuf_get(xb, r2), o2);
if (!lnmode) {
sbuf_smake(sb, 1024)
sbuf_str(sb, pref)
sbufn_str(sb, post)
lbuf_edit(xb, sb->s, r1, r2 + 1);
free(sb->s);
} else
lbuf_edit(xb, NULL, r1, r2 + 1);
xrow = r1;
xoff = lnmode ? lbuf_indents(xb, xrow) : o1;
free(pref);
}
static void vi_splitln(int row, int linepos, int newln)
{
char *s, *part, *buf;
s = lbuf_get(xb, row);
if (!s)
return;
part = uc_sub(s, linepos, -1);
buf = uc_sub(s, 0, linepos);
if (newln || *part != '\n') {
lbuf_edit(xb, buf, row, row+1);
lbuf_edit(xb, part, row+1, row+1);
vi_mod |= 1;
}
free(part);
free(buf);
}
static char *vi_indents(char *ln, int *l)
{
sbuf_smake(sb, 256)
while (xai && ln && (*ln == ' ' || *ln == '\t'))
sbuf_chr(sb, *ln++)
*l = sb->s_n;
sbufn_sret(sb)
}
static void vi_change(int r1, int o1, int r2, int o2, int lnmode)
{
char *region, *pref, *post, *_post;
char *ln = lbuf_get(xb, r1);
int l1, l2 = 1;
region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2);
vi_regput(vi_ybuf, region, lnmode);
free(region);
pref = lnmode ? vi_indents(ln, &l1) : uc_subl(ln, 0, o1, &l1);
post = _post = lnmode ? uc_dup("\n") : uc_subl(lbuf_get(xb, r2), o2, -1, &l2);
term_pos(r1 - xtop < 0 ? 0 : r1 - xtop, 0);
term_room(r1 < xtop ? xtop - xrow : r1 - r2);
xrow = r1;
if (r1 < xtop)
xtop = r1;
sbuf *rep = led_input(pref, &post, r1 - (r1 - r2), 0);
sbufn_str(rep, post)
int tlen = lnmode || !ln ? -1 : lbuf_s(ln)->len+1;
if (rep->s_n != tlen || memcmp(&ln[l1], &rep->s[l1], tlen - l2 - l1))
lbuf_edit(xb, rep->s, r1, r2 + 1);
sbuf_free(rep)
free(pref);
free(_post);
}
static void vi_case(int r1, int o1, int r2, int o2, int lnmode, int cmd)
{
char *pref, *post;
char *region, *s;
region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2);
s = region;
while (uc_len(s)) {
int c = (unsigned char) s[0];
if (c <= 0x7f) {
if (cmd == 'u')
s[0] = tolower(c);
if (cmd == 'U')
s[0] = toupper(c);
if (cmd == '~')
s[0] = islower(c) ? toupper(c) : tolower(c);
}
s += uc_len(s);
}
pref = lnmode ? uc_dup("") : uc_sub(lbuf_get(xb, r1), 0, o1);
post = lnmode ? "\n" : uc_chr(lbuf_get(xb, r2), o2);
if (!lnmode) {
sbuf_smake(sb, 256)
sbuf_str(sb, pref)
sbuf_str(sb, region)
sbufn_str(sb, post)
lbuf_edit(xb, sb->s, r1, r2 + 1);
free(sb->s);
} else
lbuf_edit(xb, region, r1, r2 + 1);
xrow = r2;
xoff = lnmode ? lbuf_indents(xb, r2) : o2;
free(region);
free(pref);