/* $Id: anchor.c,v 1.33 2006/04/08 11:33:16 inu Exp $ */
#include "fm.h"
#include "myctype.h"
#include "regex.h"
#define FIRST_ANCHOR_SIZE 30
AnchorList *
putAnchor(AnchorList *al, char *url, char *target, Anchor **anchor_return,
char *referer, char *title, unsigned char key, int line, int pos)
{
int n, i, j;
Anchor *a;
BufferPoint bp;
if (al == NULL) {
al = New(AnchorList);
al->anchors = NULL;
al->nanchor = al->anchormax = 0;
al->acache = -1;
}
if (al->anchormax == 0) {
/* first time; allocate anchor buffer */
al->anchors = New_N(Anchor, FIRST_ANCHOR_SIZE);
al->anchormax = FIRST_ANCHOR_SIZE;
}
if (al->nanchor == al->anchormax) { /* need realloc */
al->anchormax *= 2;
al->anchors = New_Reuse(Anchor, al->anchors, al->anchormax);
}
bp.line = line;
bp.pos = pos;
n = al->nanchor;
if (!n || bpcmp(al->anchors[n - 1].start, bp) < 0)
i = n;
else
for (i = 0; i < n; i++) {
if (bpcmp(al->anchors[i].start, bp) >= 0) {
for (j = n; j > i; j--)
al->anchors[j] = al->anchors[j - 1];
break;
}
}
a = &al->anchors[i];
a->url = url;
a->target = target;
a->referer = referer;
a->title = title;
a->accesskey = key;
a->slave = FALSE;
a->start = bp;
a->end = bp;
al->nanchor++;
if (anchor_return)
*anchor_return = a;
return al;
}
Anchor *
registerHref(Buffer *buf, char *url, char *target, char *referer, char *title,
unsigned char key, int line, int pos)
{
Anchor *a;
buf->href = putAnchor(buf->href, url, target, &a, referer, title, key,
line, pos);
return a;
}
Anchor *
registerName(Buffer *buf, char *url, int line, int pos)
{
Anchor *a;
buf->name = putAnchor(buf->name, url, NULL, &a, NULL, NULL, '\0', line,
pos);
return a;
}
Anchor *
registerImg(Buffer *buf, char *url, char *title, int line, int pos)
{
Anchor *a;
buf->img = putAnchor(buf->img, url, NULL, &a, NULL, title, '\0', line,
pos);
return a;
}
Anchor *
registerForm(Buffer *buf, FormList *flist, struct parsed_tag *tag, int line,
int pos)
{
Anchor *a;
FormItemList *fi;
fi = formList_addInput(flist, tag);
if (fi == NULL)
return NULL;
buf->formitem = putAnchor(buf->formitem, (char *)fi, flist->target, &a,
NULL, NULL, '\0', line, pos);
return a;
}
int
onAnchor(Anchor *a, int line, int pos)
{
BufferPoint bp;
bp.line = line;
bp.pos = pos;
if (bpcmp(bp, a->start) < 0)
return -1;
if (bpcmp(a->end, bp) <= 0)
return 1;
return 0;
}
Anchor *
retrieveAnchor(AnchorList *al, int line, int pos)
{
Anchor *a;
size_t b, e;
int cmp;
if (al == NULL || al->nanchor == 0)
return NULL;
if (al->acache < 0 || al->acache >= al->nanchor)
al->acache = 0;
for (b = 0, e = al->nanchor - 1; b <= e; al->acache = (b + e) / 2) {
a = &al->anchors[al->acache];
cmp = onAnchor(a, line, pos);
if (cmp == 0)
return a;
else if (cmp > 0)
b = al->acache + 1;
else if (al->acache == 0)
return NULL;
else
e = al->acache - 1;
}
return NULL;
}
Anchor *
retrieveCurrentAnchor(Buffer *buf)
{
if (buf->currentLine == NULL)
return NULL;
return retrieveAnchor(buf->href, buf->currentLine->linenumber, buf->pos);
}
Anchor *
retrieveCurrentImg(Buffer *buf)
{
if (buf->currentLine == NULL)
return NULL;
return retrieveAnchor(buf->img, buf->currentLine->linenumber, buf->pos);
}
Anchor *
retrieveCurrentForm(Buffer *buf)
{
if (buf->currentLine == NULL)
return NULL;
return retrieveAnchor(buf->formitem,
buf->currentLine->linenumber, buf->pos);
}
Anchor *
searchAnchor(AnchorList *al, char *str)
{
int i;
Anchor *a;
if (al == NULL)
return NULL;
for (i = 0; i < al->nanchor; i++) {
a = &al->anchors[i];
if (a->hseq < 0)
continue;
if (!strcmp(a->url, str))
return a;
}
return NULL;
}
Anchor *
searchURLLabel(Buffer *buf, char *url)
{
return searchAnchor(buf->name, url);
}
#ifdef USE_NNTP
static Anchor *
_put_anchor_news(Buffer *buf, char *p1, char *p2, int line, int pos)
{
Str tmp;
if (*p1 == '<') {
p1++;
if (*(p2 - 1) == '>')
p2--;
}
tmp = Strnew_charp("news:");
Strcat_charp_n(tmp, p1, p2 - p1);
return registerHref(buf, url_encode(tmp->ptr, baseURL(buf),
buf->document_charset),
NULL, NO_REFERER, NULL, '\0', line,
pos);
}
#endif /* USE_NNTP */
static Anchor *
_put_anchor_all(Buffer *buf, char *p1, char *p2, int line, int pos)
{
Str tmp;
tmp = Strnew_charp_n(p1, p2 - p1);
return registerHref(buf, url_encode(tmp->ptr, baseURL(buf),
buf->document_charset),
NULL, NO_REFERER, NULL,
'\0', line, pos);
}
static void
reseq_anchor0(AnchorList *al, short *seqmap)
{
int i;
Anchor *a;
if (!al)
return;
for (i = 0; i < al->nanchor; i++) {
a = &al->anchors[i];
if (a->hseq >= 0) {
a->hseq = seqmap[a->hseq];
}
}
}
/* renumber anchor */
static void
reseq_anchor(Buffer *buf)
{
int i, j, n, nmark = (buf->hmarklist) ? buf->hmarklist->nmark : 0;
short *seqmap;
Anchor *a, *a1;
HmarkerList *ml = NULL;
if (!buf->href)
return;
n = nmark;
for (i = 0; i < buf->href->nanchor; i++) {
a = &buf->href->anchors[i];
if (a->hseq == -2)
n++;
}
if (n == nmark)
return;
seqmap = NewAtom_N(short, n);
for (i = 0; i < n; i++)
seqmap[i] = i;
n = nmark;
for (i = 0; i < buf->href->nanchor; i++) {
a = &buf->href->anchors[i];
if (a->hseq == -2) {
a->hseq = n;
a1 = closest_next_anchor(buf->href, NULL, a->start.pos,
a->start.line);
a1 = closest_next_anchor(buf->formitem, a1, a->start.pos,
a->start.line);
if (a1 && a1->hseq >= 0) {
seqmap[n] = seqmap[a1->hseq];
for (j = a1->hseq; j < nmark; j++)
seqmap[j]++;
}
ml = putHmarker(ml, a->start.line, a->start.pos, seqmap[n]);
n++;
}
}
for (i = 0; i < nmark; i++) {
ml = putHmarker(ml, buf->hmarklist->marks[i].line,
buf->hmarklist->marks[i].pos, seqmap[i]);
}
buf->hmarklist = ml;
reseq_anchor0(buf->href, seqmap);
reseq_anchor0(buf->formitem, seqmap);
}
static char *
reAnchorPos(Buffer *buf, Line *l, char *p1, char *p2,
Anchor *(*anchorproc) (Buffer *, char *, char *, int, int))
{
Anchor *a;
int spos, epos;
int i, hseq = -2;
spos = p1 - l->lineBuf;
epos = p2 - l->lineBuf;
for (i = spos; i < epos; i++) {
if (l->propBuf[i] & (PE_ANCHOR | PE_FORM))
return p2;
}
for (i = spos; i < epos; i++)
l->propBuf[i] |= PE_ANCHOR;
while (spos > l->len && l->next && l->next->bpos) {
spos -= l->len;
epos -= l->len;
l = l->next;
}
while (1) {
a = anchorproc(buf, p1, p2, l->linenumber, spos);
a->hseq = hseq;
if (hseq == -2) {
reseq_anchor(buf);
hseq = a->hseq;
}
a->end.line = l->linenumber;
if (epos > l->len && l->next && l->next->bpos) {
a->end.pos = l->len;
spos = 0;
epos -= l->len;
l = l->next;
}
else {
a->end.pos = epos;
break;
}
}
return p2;
}
void
reAnchorWord(Buffer *buf, Line *l, int spos, int epos)
{
reAnchorPos(buf, l, &l->lineBuf[spos], &l->lineBuf[epos], _put_anchor_all);
}
/* search regexp and register them as anchors */
/* returns error message if any */
static char *
reAnchorAny(Buffer *buf, char *re,
Anchor *(*anchorproc) (Buffer *, char *, char *, int, int))
{
Line *l;
char *p = NULL, *p1, *p2;
if (re == NULL || *re == '\0') {
return NULL;
}
if ((re = regexCompile(re, 1)) != NULL) {
return re;
}
for (l = MarkAllPages ? buf->firstLine : buf->topLine; l != NULL &&
(MarkAllPages || l->linenumber < buf->topLine->linenumber + LASTLINE);
l = l->next) {
if (p && l->bpos)
goto next_line;
p = l->lineBuf;
for (;;) {
if (regexMatch(p, &l->lineBuf[l->size] - p, p == l->lineBuf) == 1) {
matchedPosition(&p1, &p2);
p = reAnchorPos(buf, l, p1, p2, anchorproc);
}
else
break;
}
next_line:
if (MarkAllPages && l->next == NULL && buf->pagerSource &&
!(buf->bufferprop & BP_CLOSE))
getNextPage(buf, PagerMax);
}
return NULL;
}
char *
reAnchor(Buffer *buf, char *re)
{
return reAnchorAny(buf, re, _put_anchor_all);
}
#ifdef USE_NNTP
char *
reAnchorNews(Buffer *buf, char *re)
{
return reAnchorAny(buf, re, _put_anchor_news);
}
char *
reAnchorNewsheader(Buffer *buf)
{
Line *l;
char *p, *p1, *p2;
static char *header_mid[] = {
"Message-Id:", "References:", "In-Reply-To:", NULL
};
static char *header_group[] = {
"Newsgroups:", NULL
};
char **header, **q;
int i, search = FALSE;
if (!buf || !buf->firstLine)
return NULL;
for (i = 0; i <= 1; i++) {
if (i == 0) {
regexCompile("<[!-;=?-~]+@[a-zA-Z0-9\\.\\-_]+>", 1);
header = header_mid;
}
else {
regexCompile("[a-zA-Z0-9\\.\\-_]+", 1);
header = header_group;
}
for (l = buf->firstLine; l != NULL && l->real_linenumber == 0;
l = l->next) {
if (l->bpos)
continue;
p = l->lineBuf;
if (!IS_SPACE(*p)) {
search = FALSE;
for (q = header; *q; q++) {
if (!strncasecmp(p, *q, strlen(*q))) {
search = TRUE;
p = strchr(p, ':') + 1;
break;
}
}
}
if (!search)
continue;
for (;;) {
if (regexMatch(p, &l->lineBuf[l->size] - p, p == l->lineBuf)
== 1) {
matchedPosition(&p1, &p2);
p = reAnchorPos(buf, l, p1, p2, _put_anchor_news);
}
else
break;
}
}
}
reseq_anchor(buf);
return NULL;
}
#endif /* USE_NNTP */
#define FIRST_MARKER_SIZE 30
HmarkerList *
putHmarker(HmarkerList *ml, int line, int pos, int seq)
{
if (ml == NULL) {
ml = New(HmarkerList);
ml->marks = NULL;
ml->nmark = 0;
ml->markmax = 0;
ml->prevhseq = -1;
}
if (ml->markmax == 0) {
ml->markmax = FIRST_MARKER_SIZE;
ml->marks = NewAtom_N(BufferPoint, ml->markmax);
bzero(ml->marks, sizeof(BufferPoint) * ml->markmax);
}
if (seq + 1 > ml->nmark)
ml->nmark = seq + 1;
if (ml->nmark >= ml->markmax) {
ml->markmax = ml->nmark * 2;
ml->marks = New_Reuse(BufferPoint, ml->marks, ml->markmax);
}
ml->marks[seq].line = line;
ml->marks[seq].pos = pos;
ml->marks[seq].invalid = 0;
return ml;
}
Anchor *
closest_next_anchor(AnchorList *a, Anchor *an, int x, int y)
{
int i;
if (a == NULL || a->nanchor == 0)
return an;
for (i = 0; i < a->nanchor; i++) {
if (a->anchors[i].hseq < 0)
continue;
if (a->anchors[i].start.line > y ||
(a->anchors[i].start.line == y && a->anchors[i].start.pos > x)) {
if (an == NULL || an->start.line > a->anchors[i].start.line ||
(an->start.line == a->anchors[i].start.line &&
an->start.pos > a->anchors[i].start.pos))
an = &a->anchors[i];
}
}
return an;
}
Anchor *
closest_prev_anchor(AnchorList *a, Anchor *an, int x, int y)
{
int i;
if (a == NULL || a->nanchor == 0)
return an;
for (i = 0; i < a->nanchor; i++) {
if (a->anchors[i].hseq < 0)
continue;
if (a->anchors[i].end.line < y ||
(a->anchors[i].end.line == y && a->anchors[i].end.pos <= x)) {
if (an == NULL || an->end.line < a->anchors[i].end.line ||
(an->end.line == a->anchors[i].end.line &&
an->end.pos < a->anchors[i].end.pos))
an = &a->anchors[i];
}
}
return an;
}
void
shiftAnchorPosition(AnchorList *al, HmarkerList *hl, int line, int pos,
int shift)
{
Anchor *a;
size_t b, e, s = 0;
int cmp;
if (al == NULL || al->nanchor == 0)
return;
s = al->nanchor / 2;
for (b = 0, e = al->nanchor - 1; b <= e; s = (b + e + 1) / 2) {
a = &al->anchors[s];
cmp = onAnchor(a, line, pos);
if (cmp == 0)
break;
else if (cmp > 0)
b = s + 1;
else if (s == 0)
break;
else
e = s - 1;
}
for (; s < al->nanchor; s++) {
a = &al->anchors[s];
if (a->start.line > line)
break;
if (a->start.pos > pos) {
a->start.pos += shift;
if (hl && hl->marks && hl->marks[a->hseq].line == line)
hl->marks[a->hseq].pos = a->start.pos;
}
if (a->end.pos >= pos)
a->end.pos += shift;
}
}
#ifdef USE_IMAGE
void
addMultirowsImg(Buffer *buf, AnchorList *al)
{
int i, j, k, col, ecol, pos;
Image *img;
Anchor a_img, a_href, a_form, *a;
Line *l, *ls;
if (al == NULL || al->nanchor == 0)
return;
for (i = 0; i < al->nanchor; i++) {
a_img = al->anchors[i];
img = a_img.image;
if (a_img.hseq < 0 || !img || img->rows <= 1)
continue;
for (l = buf->firstLine; l != NULL; l = l->next) {
if (l->linenumber == img->y)
break;
}
if (!l)
continue;
if (a_img.y == a_img.start.line)
ls = l;
else {
for (ls = l; ls != NULL;
ls = (a_img.y < a_img.start.line) ? ls->next : ls->prev) {
if (ls->linenumber == a_img.start.line)
break;
}
if (!ls)
continue;
}
a = retrieveAnchor(buf->href, a_img.start.line, a_img.start.pos);
if (a)
a_href = *a;
else
a_href.url = NULL;
a = retrieveAnchor(buf->formitem, a_img.start.line, a_img.start.pos);
if (a)
a_form = *a;
else
a_form.url = NULL;
col = COLPOS(ls, a_img.start.pos);
ecol = COLPOS(ls, a_img.end.pos);
for (j = 0; l && j < img->rows; l = l->next, j++) {
if (a_img.start.line == l->linenumber)
continue;
pos = columnPos(l, col);
a = registerImg(buf, a_img.url, a_img.title, l->linenumber, pos);
a->hseq = -a_img.hseq;
a->slave = TRUE;
a->image = img;
a->end.pos = pos + ecol - col;
for (k = pos; k < a->end.pos; k++)
l->propBuf[k] |= PE_IMAGE;
if (a_href.url) {
a = registerHref(buf, a_href.url, a_href.target,
a_href.referer, a_href.title,
a_href.accesskey, l->linenumber, pos);
a->hseq = a_href.hseq;
a->slave = TRUE;
a->end.pos = pos + ecol - col;
for (k = pos; k < a->end.pos; k++)
l->propBuf[k] |= PE_ANCHOR;
}
if (a_form.url) {
buf->formitem = putAnchor(buf->formitem, a_form.url,
a_form.target, &a, NULL, NULL, '\0',
l->linenumber, pos);
a->hseq = a_form.hseq;
a->end.pos = pos + ecol - col;
}
}
img->rows = 0;
}
}
#endif
void
addMultirowsForm(Buffer *buf, AnchorList *al)
{
int i, j, k, col, ecol, pos;
Anchor a_form, *a;
FormItemList *fi;
Line *l, *ls;
if (al == NULL || al->nanchor == 0)
return;
for (i = 0; i < al->nanchor; i++) {
a_form = al->anchors[i];
al->anchors[i].rows = 1;
if (a_form.hseq < 0 || a_form.rows <= 1)
continue;
for (l = buf->firstLine; l != NULL; l = l->next) {
if (l->linenumber == a_form.y)
break;
}
if (!l)
continue;
if (a_form.y == a_form.start.line)
ls = l;
else {
for (ls = l; ls != NULL;
ls = (a_form.y < a_form.start.line) ? ls->next : ls->prev) {
if (ls->linenumber == a_form.start.line)
break;
}
if (!ls)
continue;
}
fi = (FormItemList *)a_form.url;
col = COLPOS(ls, a_form.start.pos);
ecol = COLPOS(ls, a_form.end.pos);
for (j = 0; l && j < a_form.rows; l = l->next, j++) {
pos = columnPos(l, col);
if (j == 0) {
buf->hmarklist->marks[a_form.hseq].line = l->linenumber;
buf->hmarklist->marks[a_form.hseq].pos = pos;
}
if (a_form.start.line == l->linenumber)
continue;
buf->formitem = putAnchor(buf->formitem, a_form.url,
a_form.target, &a, NULL, NULL, '\0',
l->linenumber, pos);
a->hseq = a_form.hseq;
a->y = a_form.y;
a->end.pos = pos + ecol - col;
if (pos < 1 || a->end.pos >= l->size)
continue;
l->lineBuf[pos - 1] = '[';
l->lineBuf[a->end.pos] = ']';
for (k = pos; k < a->end.pos; k++)
l->propBuf[k] |= PE_FORM;
}
}
}
char *
getAnchorText(Buffer *buf, AnchorList *al, Anchor *a)
{
int hseq, i;
Line *l;
Str tmp = NULL;
char *p, *ep;
if (!a || a->hseq < 0)
return NULL;
hseq = a->hseq;
l = buf->firstLine;
for (i = 0; i < al->nanchor; i++) {
a = &al->anchors[i];
if (a->hseq != hseq)
continue;
for (; l; l = l->next) {
if (l->linenumber == a->start.line)
break;
}
if (!l)
break;
p = l->lineBuf + a->start.pos;
ep = l->lineBuf + a->end.pos;
for (; p < ep && IS_SPACE(*p); p++) ;
if (p == ep)
continue;
if (!tmp)
tmp = Strnew_size(ep - p);
else
Strcat_char(tmp, ' ');
Strcat_charp_n(tmp, p, ep - p);
}
return tmp ? tmp->ptr : NULL;
}
Buffer *
link_list_panel(Buffer *buf)
{
LinkList *l;
AnchorList *al;
Anchor *a;
FormItemList *fi;
int i;
char *t, *u, *p;
ParsedURL pu;
/* FIXME: gettextize? */
Str tmp = Strnew_charp("<title>Link List</title>\
<h1 align=center>Link List</h1>\n");
if (buf->bufferprop & BP_INTERNAL ||
(buf->linklist == NULL && buf->href == NULL && buf->img == NULL)) {
return NULL;
}
if (buf->linklist) {
Strcat_charp(tmp, "<hr><h2>Links</h2>\n<ol>\n");
for (l = buf->linklist; l; l = l->next) {
if (l->url) {
parseURL2(l->url, &pu, baseURL(buf));
p = parsedURL2Str(&pu)->ptr;
u = html_quote(p);
if (DecodeURL)
p = html_quote(url_decode2(p, buf));
else
p = u;
}
else
u = p = "";
if (l->type == LINK_TYPE_REL)
t = " [Rel]";
else if (l->type == LINK_TYPE_REV)
t = " [Rev]";
else
t = "";
t = Sprintf("%s%s\n", l->title ? l->title : "", t)->ptr;
t = html_quote(t);
Strcat_m_charp(tmp, "<li><a href=\"", u, "\">", t, "</a><br>", p,
"\n", NULL);
}
Strcat_charp(tmp, "</ol>\n");
}
if (buf->href) {
Strcat_charp(tmp, "<hr><h2>Anchors</h2>\n<ol>\n");
al = buf->href;
for (i = 0; i < al->nanchor; i++) {
a = &al->anchors[i];
if (a->hseq < 0 || a->slave)
continue;
parseURL2(a->url, &pu, baseURL(buf));
p = parsedURL2Str(&pu)->ptr;
u = html_quote(p);
if (DecodeURL)
p = html_quote(url_decode2(p, buf));
else
p = u;
t = getAnchorText(buf, al, a);
t = t ? html_quote(t) : "";
Strcat_m_charp(tmp, "<li><a href=\"", u, "\">", t, "</a><br>", p,
"\n", NULL);
}
Strcat_charp(tmp, "</ol>\n");
}
if (buf->img) {
Strcat_charp(tmp, "<hr><h2>Images</h2>\n<ol>\n");
al = buf->img;
for (i = 0; i < al->nanchor; i++) {
a = &al->anchors[i];
if (a->slave)
continue;
parseURL2(a->url, &pu, baseURL(buf));
p = parsedURL2Str(&pu)->ptr;
u = html_quote(p);
if (DecodeURL)
p = html_quote(url_decode2(p, buf));
else
p = u;
if (a->title && *a->title)
t = html_quote(a->title);
else
t = html_quote(url_decode2(a->url, buf));
Strcat_m_charp(tmp, "<li><a href=\"", u, "\">", t, "</a><br>", p,
"\n", NULL);
a = retrieveAnchor(buf->formitem, a->start.line, a->start.pos);
if (!a)
continue;
fi = (FormItemList *)a->url;
fi = fi->parent->item;
if (fi->parent->method == FORM_METHOD_INTERNAL &&
!Strcmp_charp(fi->parent->action, "map") && fi->value) {
MapList *ml = searchMapList(buf, fi->value->ptr);
ListItem *mi;
MapArea *m;
if (!ml)
continue;
Strcat_charp(tmp, "<br>\n<b>Image map</b>\n<ol>\n");
for (mi = ml->area->first; mi != NULL; mi = mi->next) {
m = (MapArea *) mi->ptr;
if (!m)
continue;
parseURL2(m->url, &pu, baseURL(buf));
p = parsedURL2Str(&pu)->ptr;
u = html_quote(p);
if (DecodeURL)
p = html_quote(url_decode2(p, buf));
else
p = u;
if (m->alt && *m->alt)
t = html_quote(m->alt);
else
t = html_quote(url_decode2(m->url, buf));
Strcat_m_charp(tmp, "<li><a href=\"", u, "\">", t,
"</a><br>", p, "\n", NULL);
}
Strcat_charp(tmp, "</ol>\n");
}
}
Strcat_charp(tmp, "</ol>\n");
}
return loadHTMLString(tmp);
}