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/* $Id: search.c,v 1.23 2002/12/18 16:33:19 ukai Exp $ */
#include "fm.h"
#include "regex.h"
#include <signal.h>
#include <errno.h>
#include <unistd.h>
static void
set_mark(Line *l, int pos, int epos)
{
for (; pos < epos && pos < l->len; pos++)
l->propBuf[pos] |= PE_MARK;
}
#ifdef USE_MIGEMO
/* Migemo: romaji --> kana+kanji in regexp */
static FILE *migemor, *migemow;
static int migemo_running;
static int migemo_pid;
void
init_migemo()
{
migemo_active = migemo_running = use_migemo;
if (migemor != NULL)
fclose(migemor);
if (migemow != NULL)
fclose(migemow);
migemor = migemow = NULL;
if (migemo_pid)
kill(migemo_pid, SIGKILL);
migemo_pid = 0;
}
static int
open_migemo(char *migemo_command)
{
int fdr[2];
int fdw[2];
if (pipe(fdr) < 0)
goto err0;
if (pipe(fdw) < 0)
goto err1;
flush_tty();
/* migemow:fdw[1] -|-> fdw[0]=0 {migemo} fdr[1]=1 -|-> fdr[0]:migemor */
migemo_pid = fork();
if (migemo_pid < 0)
goto err2;
if (migemo_pid == 0) {
/* child */
reset_signals();
SETPGRP();
close_tty();
close(fdr[0]);
close(fdw[1]);
dup2(fdw[0], 0);
dup2(fdr[1], 1);
close_all_fds(2);
execl("/bin/sh", "sh", "-c", migemo_command, NULL);
/* XXX: ifndef HAVE_SETPGRP, use "start /f"? */
exit(1);
}
close(fdr[1]);
close(fdw[0]);
migemor = fdopen(fdr[0], "r");
migemow = fdopen(fdw[1], "w");
return 1;
err2:
close(fdw[0]);
close(fdw[1]);
err1:
close(fdr[0]);
close(fdr[1]);
err0:
migemo_active = migemo_running = 0;
return 0;
}
static char *
migemostr(char *str)
{
Str tmp = NULL;
if (migemor == NULL || migemow == NULL)
if (open_migemo(migemo_command) == 0)
return str;
fprintf(migemow, "%s\n", str);
again:
if (fflush(migemow) != 0) {
switch (errno) {
case EINTR:
goto again;
default:
goto err;
}
}
tmp = Strfgets(migemor);
Strchop(tmp);
if (tmp->length == 0)
goto err;
return tmp->ptr;
err:
/* XXX: backend migemo is not working? */
init_migemo();
migemo_active = migemo_running = 0;
return str;
}
#endif /* USE_MIGEMO */
int
forwardSearch(Buffer *buf, char *str)
{
char *p, *first, *last;
Line *l, *begin;
int wrapped = FALSE;
int pos;
#ifdef USE_MIGEMO
if (migemo_active > 0) {
if (((p = regexCompile(migemostr(str), IgnoreCase)) != NULL)
&& ((p = regexCompile(str, IgnoreCase)) != NULL)) {
message(p, 0, 0);
return SR_NOTFOUND;
}
}
else
#endif
if ((p = regexCompile(str, IgnoreCase)) != NULL) {
message(p, 0, 0);
return SR_NOTFOUND;
}
l = begin = buf->currentLine;
if (l == NULL) {
return SR_NOTFOUND;
}
pos = buf->pos + 1;
#ifdef JP_CHARSET
if (l->propBuf[pos] & PC_KANJI2)
pos++;
#endif
if (pos < l->len && regexMatch(&l->lineBuf[pos], l->len - pos, 0) == 1) {
matchedPosition(&first, &last);
buf->pos = first - l->lineBuf;
arrangeCursor(buf);
set_mark(l, buf->pos, last - l->lineBuf);
return SR_FOUND;
}
for (l = l->next;; l = l->next) {
if (l == NULL) {
if (buf->pagerSource) {
l = getNextPage(buf, 1);
if (l == NULL) {
if (WrapSearch && !wrapped) {
l = buf->firstLine;
wrapped = TRUE;
}
else {
break;
}
}
}
else if (WrapSearch) {
l = buf->firstLine;
wrapped = TRUE;
}
else {
break;
}
}
if (regexMatch(l->lineBuf, l->len, 1) == 1) {
matchedPosition(&first, &last);
if (wrapped && l == begin && buf->pos == first - l->lineBuf)
/* exactly same match */
break;
buf->pos = first - l->lineBuf;
buf->currentLine = l;
gotoLine(buf, l->linenumber);
arrangeCursor(buf);
set_mark(l, buf->pos, last - l->lineBuf);
return SR_FOUND | (wrapped ? SR_WRAPPED : 0);
}
if (wrapped && l == begin) /* no match */
break;
}
return SR_NOTFOUND;
}
int
backwardSearch(Buffer *buf, char *str)
{
char *p, *q, *found, *found_last, *first, *last;
Line *l, *begin;
int wrapped = FALSE;
int pos;
#ifdef USE_MIGEMO
if (migemo_active > 0) {
if (((p = regexCompile(migemostr(str), IgnoreCase)) != NULL)
&& ((p = regexCompile(str, IgnoreCase)) != NULL)) {
message(p, 0, 0);
return SR_NOTFOUND;
}
}
else
#endif
if ((p = regexCompile(str, IgnoreCase)) != NULL) {
message(p, 0, 0);
return SR_NOTFOUND;
}
l = begin = buf->currentLine;
if (l == NULL) {
return SR_NOTFOUND;
}
if (buf->pos > 0) {
pos = buf->pos - 1;
#ifdef JP_CHARSET
if (l->propBuf[pos] & PC_KANJI2)
pos--;
#endif
p = &l->lineBuf[pos];
found = NULL;
found_last = NULL;
q = l->lineBuf;
while (regexMatch(q, &l->lineBuf[l->len] - q, q == l->lineBuf) == 1) {
matchedPosition(&first, &last);
if (first <= p) {
found = first;
found_last = last;
}
#ifdef JP_CHARSET
if (l->propBuf[q - l->lineBuf] & PC_KANJI1)
q += 2;
else
#endif
q++;
if (q > p)
break;
}
if (found) {
buf->pos = found - l->lineBuf;
arrangeCursor(buf);
set_mark(l, buf->pos, found_last - l->lineBuf);
return SR_FOUND;
}
}
for (l = l->prev;; l = l->prev) {
if (l == NULL) {
if (WrapSearch) {
l = buf->lastLine;
wrapped = TRUE;
}
else {
break;
}
}
found = NULL;
found_last = NULL;
q = l->lineBuf;
while (regexMatch(q, &l->lineBuf[l->len] - q, q == l->lineBuf) == 1) {
matchedPosition(&first, &last);
if (wrapped && l == begin && buf->pos == first - l->lineBuf)
/* exactly same match */
;
else {
found = first;
found_last = last;
}
#ifdef JP_CHARSET
if (l->propBuf[q - l->lineBuf] & PC_KANJI1)
q += 2;
else
#endif
q++;
}
if (found) {
buf->pos = found - l->lineBuf;
buf->currentLine = l;
gotoLine(buf, l->linenumber);
arrangeCursor(buf);
set_mark(l, buf->pos, found_last - l->lineBuf);
return SR_FOUND | (wrapped ? SR_WRAPPED : 0);
}
if (wrapped && l == begin) /* no match */
break;
}
return SR_NOTFOUND;
}
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