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/* $Id: search.c,v 1.6 2002/01/11 02:24:13 a-ito Exp $ */
#include "fm.h"
#include "regex.h"
int
forwardSearch(Buffer *buf, char *str)
{
char *p, *first, *last;
Line *l, *begin;
int wrapped = FALSE;
int pos;
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);
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);
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, *first, *last;
Line *l, *begin;
int wrapped = FALSE;
int pos;
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;
q = l->lineBuf;
while (regexMatch(q, &l->lineBuf[l->len] - q, q == l->lineBuf) == 1) {
matchedPosition(&first, &last);
if (first <= p)
found = first;
#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);
return SR_FOUND;
}
}
for (l = l->prev;; l = l->prev) {
if (l == NULL) {
if (WrapSearch) {
l = buf->lastLine;
wrapped = TRUE;
}
else {
break;
}
}
found = 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;
#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);
return SR_FOUND | (wrapped ? SR_WRAPPED : 0);
}
if (wrapped && l == begin) /* no match */
break;
}
return SR_NOTFOUND;
}
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