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html_r.c
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html_r.c
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/* html_r.c
* (c) 2002 Mikulas Patocka
* This file is a part of the Links program, released under GPL.
*/
#include "links.h"
struct f_data *init_formatted(struct document_options *opt)
{
struct f_data *scr;
scr = mem_calloc(sizeof(struct f_data));
copy_opt(&scr->opt, opt);
scr->data = DUMMY;
scr->nlinks = 0;
scr->links = DUMMY;
#ifdef JS
scr->nlink_events = 0;
scr->link_events = DUMMY;
#endif
init_list(scr->forms);
init_list(scr->tags);
init_list(scr->nodes);
#ifdef G
scr->n_images=0;
init_list(scr->images);
scr->search_positions = DUMMY;
scr->search_lengths = DUMMY;
init_list(scr->image_refresh);
scr->start_highlight_x = -1;
scr->start_highlight_y = -1;
scr->hlt_pos = -1;
#endif
return scr;
}
void destroy_fc(struct form_control *fc)
{
int i;
if (fc->action) mem_free(fc->action);
if (fc->target) mem_free(fc->target);
if (fc->form_name) mem_free(fc->form_name);
if (fc->onsubmit) mem_free(fc->onsubmit);
if (fc->name) mem_free(fc->name);
if (fc->alt) mem_free(fc->alt);
if (fc->default_value) mem_free(fc->default_value);
for (i = 0; i < fc->nvalues; i++) {
if (fc->values[i]) mem_free(fc->values[i]);
if (fc->labels[i]) mem_free(fc->labels[i]);
}
if (fc->values) mem_free(fc->values);
if (fc->labels) mem_free(fc->labels);
if (fc->menu) free_menu(fc->menu);
}
void free_frameset_desc(struct frameset_desc *fd)
{
int i;
for (i = 0; i < fd->n; i++) {
if (fd->f[i].subframe) free_frameset_desc(fd->f[i].subframe);
if (fd->f[i].name) mem_free(fd->f[i].name);
if (fd->f[i].url) mem_free(fd->f[i].url);
}
#ifdef JS
if (fd->onload_code)mem_free(fd->onload_code);
#endif
mem_free(fd);
}
struct frameset_desc *copy_frameset_desc(struct frameset_desc *fd)
{
int i;
struct frameset_desc *neww;
if ((unsigned)fd->n > MAXINT / sizeof(struct frame_desc)) overalloc();
neww = mem_alloc(sizeof(struct frameset_desc) + fd->n * sizeof(struct frame_desc));
memcpy(neww, fd, sizeof(struct frameset_desc) + fd->n * sizeof(struct frame_desc));
#ifdef JS
if (neww->onload_code) neww->onload_code = stracpy(neww->onload_code);
#endif
for (i = 0; i < neww->n; i++) {
if (neww->f[i].subframe) neww->f[i].subframe = copy_frameset_desc(neww->f[i].subframe);
if (neww->f[i].name) neww->f[i].name = stracpy(neww->f[i].name);
if (neww->f[i].url) neww->f[i].url = stracpy(neww->f[i].url);
}
return neww;
}
void free_additional_files(struct additional_files **a)
{
struct additional_file *af;
if (!*a) return;
if (--(*a)->refcount) {
*a = NULL;
return;
}
foreach(af, (*a)->af) release_object(&af->rq);
free_list((*a)->af);
mem_free(*a);
*a = NULL;
}
static void clear_formatted(struct f_data *scr)
{
int n;
int y;
struct form_control *fc;
if (!scr) return;
#ifdef G
if (scr->root) scr->root->destruct(scr->root);
#endif
release_object(&scr->rq);
free_additional_files(&scr->af);
if (scr->title) mem_free(scr->title);
if (scr->frame_desc) {
free_frameset_desc(scr->frame_desc);
}
for (n = 0; n < scr->nlinks; n++) {
struct link *l = &scr->links[n];
if (l->where) mem_free(l->where);
if (l->target) mem_free(l->target);
if (l->where_img) mem_free(l->where_img);
if (l->img_alt) mem_free(l->img_alt);
if (l->pos) mem_free(l->pos);
free_js_event_spec(l->js_event);
}
mem_free(scr->links);
#ifdef JS
for (n = 0; n < scr->nlink_events; n++) {
free_js_event_spec(scr->link_events[n]);
}
mem_free(scr->link_events);
#endif
if (!F) for (y = 0; y < scr->y; y++) mem_free(scr->data[y].d);
mem_free(scr->data);
if (scr->lines1) mem_free(scr->lines1);
if (scr->lines2) mem_free(scr->lines2);
if (scr->opt.framename) mem_free(scr->opt.framename);
foreach(fc, scr->forms) {
destroy_fc(fc);
}
free_list(scr->forms);
free_list(scr->tags);
free_list(scr->nodes);
if (scr->search) mem_free(scr->search);
if (scr->slines1) mem_free(scr->slines1);
if (scr->slines2) mem_free(scr->slines2);
#ifdef G
free_list(scr->image_refresh);
if (scr->srch_string) mem_free(scr->srch_string);
if (scr->last_search) mem_free(scr->last_search);
if (scr->search_positions) mem_free(scr->search_positions);
if (scr->search_lengths) mem_free(scr->search_lengths);
#endif
if (scr->refresh) mem_free(scr->refresh);
#ifdef JS
if (scr->script_href_base) mem_free(scr->script_href_base);
free_js_event_spec(scr->js_event);
#endif
}
void destroy_formatted(struct f_data *scr)
{
if (scr->fd) {
internal("trying to free locked formatted data");
return;
}
clear_formatted(scr);
mem_free(scr);
}
static inline int color_distance(struct rgb *c1, struct rgb *c2)
{
return
3 * (c1->r - c2->r) * (c1->r - c2->r) +
4 * (c1->g - c2->g) * (c1->g - c2->g) +
2 * (c1->b - c2->b) * (c1->b - c2->b);
}
struct rgb palette_16_colors[16] = {
{0x00, 0x00, 0x00, 0},
{0x80, 0x00, 0x00, 0},
{0x00, 0x80, 0x00, 0},
{0xaa, 0x55, 0x00, 0},
{0x00, 0x00, 0x80, 0},
{0x80, 0x00, 0x80, 0},
{0x00, 0x80, 0x80, 0},
{0xaa, 0xaa, 0xaa, 0},
{0x55, 0x55, 0x55, 0},
{0xff, 0x55, 0x55, 0},
{0x55, 0xff, 0x55, 0},
{0xff, 0xff, 0x55, 0},
{0x55, 0x55, 0xff, 0},
{0xff, 0x55, 0xff, 0},
{0x55, 0xff, 0xff, 0},
{0xff, 0xff, 0xff, 0},
};
struct rgb_cache_entry {
int color;
int l;
struct rgb rgb;
};
#define RGB_HASH_SIZE 4096
#define HASH_RGB(r, l) ((((r)->r << 3) + ((r)->g << 2) + (r)->b + (l)) & (RGB_HASH_SIZE - 1))
int find_nearest_color(struct rgb *r, int l)
{
int dist, dst, min, i;
static struct rgb_cache_entry rgb_cache[RGB_HASH_SIZE];
static int cache_init = 0;
int h;
if ((size_t)l > sizeof(palette_16_colors) / sizeof(*palette_16_colors))
internal("invalid length %d", l);
if (!cache_init) goto initialize;
back:
h = HASH_RGB(r, l);
if (rgb_cache[h].color != -1 && rgb_cache[h].l == l && rgb_cache[h].rgb.r == r->r && rgb_cache[h].rgb.g == r->g && rgb_cache[h].rgb.b == r->b) return rgb_cache[h].color;
dist = 0xffffff;
min = 0;
for (i = 0; i < l; i++) if ((dst = color_distance(r, &palette_16_colors[i])) < dist)
dist = dst, min = i;
rgb_cache[h].color = min;
rgb_cache[h].l = l;
rgb_cache[h].rgb.r = r->r;
rgb_cache[h].rgb.g = r->g;
rgb_cache[h].rgb.b = r->b;
return min;
initialize:
for (h = 0; h < RGB_HASH_SIZE; h++) rgb_cache[h].color = -1;
cache_init = 1;
goto back;
}
int fg_color(int fg, int bg)
{
int l = bg < fg ? bg : fg;
int h = bg < fg ? fg : bg;
if (l == h || (!l && (h == 4 || h == 8 || h == 12)) ||
(l == 1 && (h == 3 || h == 5 || h == 8 || h == 12)) ||
(l == 2 && h == 6) || (l == 3 && (h == 5 || h == 12)) ||
(l == 4 && (h == 8 || h == 12)) || (l == 5 && (h == 8 || h == 12)))
return (fg == 4 || fg == 12) && (bg == 0 || bg == 8) ? 6 : (7 - 7 * (bg == 2 || bg == 6 || bg == 7));
return fg;
}
#define XALIGN(x) ((x) < 0x10000 ? (safe_add((x),0xf))&~0xf : (safe_add((x),0xffff)) & ~0xffff)
static int nowrap = 0;
static void xpand_lines(struct part *p, int y)
{
if (!p->data) return;
if (y < 0) return;
y = safe_add(y, safe_add(p->yp, 1));
if (y > p->data->y) {
int i;
if ((y ^ p->data->y) > p->data->y) {
unsigned s;
for (s = 1; s < (unsigned)y; s = s * 2 + 1) {
if (s >= MAXINT) overalloc();
}
p->data->data = mem_realloc(p->data->data, s * sizeof(struct line));
}
/*
#define YALIGN(y) (((y)+0x3ff)&~0x3ff)
if (YALIGN(y + 1) > YALIGN(p->data->y)) {
if (YALIGN((unsigned)y + 1) > MAXINT / sizeof(struct line)) overalloc();
p->data->data = mem_realloc(p->data->data, YALIGN(y+1)*sizeof(struct line));
}*/
for (i = p->data->y; i < y; i++) {
p->data->data[i].l = 0;
p->data->data[i].d = DUMMY;
}
p->data->y = y;
}
}
static void xpand_line(struct part *p, int y, int x)
{
if (!p->data) return;
x = safe_add(x, p->xp);
y = safe_add(y, p->yp);
#ifdef DEBUG
if (y >= p->data->y) {
internal("line does not exist");
return;
}
#endif
if (x >= p->data->data[y].l) {
int i;
if (XALIGN(x+1) > XALIGN(p->data->data[y].l)) {
if ((unsigned)XALIGN((unsigned)x + 1) > MAXINT / sizeof(chr)) overalloc();
p->data->data[y].d = mem_realloc(p->data->data[y].d, XALIGN(x+1)*sizeof(chr));
}
for (i = p->data->data[y].l; i <= x; i++) {
p->data->data[y].d[i].at = p->attribute;
p->data->data[y].d[i].ch = ' ';
}
p->data->data[y].l = i;
}
}
static void r_xpand_spaces(struct part *p, int l)
{
unsigned char *c;
if ((unsigned)l >= MAXINT) overalloc();
c = mem_realloc(p->spaces, l + 1);
memset(c + p->spl, 0, l - p->spl + 1);
p->spl = l + 1;
p->spaces = c;
}
static inline void xpand_spaces(struct part *p, int l)
{
if ((unsigned)l >= (unsigned)p->spl) r_xpand_spaces(p, l);
}
#define POS(x, y) (p->data->data[safe_add(p->yp, (y))].d[safe_add(p->xp, (x))])
#define LEN(y) (p->data->data[safe_add(p->yp, (y))].l - p->xp < 0 ? 0 : p->data->data[p->yp + (y)].l - p->xp)
#define SLEN(y, x) p->data->data[safe_add(p->yp, (y))].l = safe_add(p->xp, x)
#define X(x) safe_add(p->xp, (x))
#define Y(y) safe_add(p->yp, (y))
static inline void set_hchar(struct part *p, int x, int y, unsigned ch, unsigned char at)
{
chr *cc;
xpand_lines(p, y);
xpand_line(p, y, x);
cc = &POS(x, y);
cc->ch = ch;
cc->at = at;
}
static inline void set_hchars(struct part *p, int x, int y, int xl, unsigned ch, unsigned char at)
{
chr *cc;
xpand_lines(p, y);
xpand_line(p, y, safe_add(x,xl)-1);
cc = &POS(x, y);
for (; xl; xl--) {
cc->ch = ch;
cc->at = at;
cc++;
}
}
void xset_hchar(struct part *p, int x, int y, unsigned ch, unsigned char at)
{
set_hchar(p, x, y, ch, at);
}
void xset_hchars(struct part *p, int x, int y, int xl, unsigned ch, unsigned char at)
{
set_hchars(p, x, y, xl, ch, at);
}
void xxpand_lines(struct part *p, int y)
{
xpand_lines(p, y);
}
void xxpand_line(struct part *p, int y, int x)
{
xpand_line(p, y, x);
}
static inline void set_hline(struct part *p, int x, int y, int xl, unsigned char *d, unsigned char at)
{
chr *cc;
int xp;
xpand_lines(p, y);
xpand_line(p, y, safe_add(x,xl)-1);
xp = par_format.align != AL_NO;
if (xp) xpand_spaces(p, safe_add(x,xl)-1);
cc = NULL;
if (p->data) cc = &POS(x, y);
for (; xl; xl--, x++, d++) {
if (xp) p->spaces[x] = *d == ' ';
if (p->data) {
cc->ch = *d;
cc->at = at;
cc++;
}
}
}
static inline void set_hline_uni(struct part *p, int x, int y, int xl, char_t *d, unsigned char at)
{
chr *cc;
int xp;
xpand_lines(p, y);
xpand_line(p, y, safe_add(x,xl)-1);
xp = par_format.align != AL_NO;
if (xp) xpand_spaces(p, safe_add(x,xl)-1);
cc = NULL;
if (p->data) cc = &POS(x, y);
for (; xl; xl--, x++, d++) {
if (xp) p->spaces[x] = *d == ' ';
if (p->data) {
cc->ch = *d;
cc->at = at;
cc++;
}
}
}
static int last_link_to_move;
static struct tag *last_tag_to_move;
static struct tag *last_tag_for_newline;
static inline void move_links(struct part *p, int xf, int yf, int xt, int yt)
{
int n;
struct tag *t;
int w = 0;
if (!p->data) return;
xpand_lines(p, yt);
for (n = last_link_to_move; n < p->data->nlinks; n++) {
int i;
struct link *link = &p->data->links[n];
/*printf("ml: %d %d %d %d",link->pos[0].x,link->pos[0].y,X(xf),Y(yf));fflush(stdout);sleep(1);*/
for (i = link->first_point_to_move; i < link->n; i++) if (link->pos[i].y >= Y(yf)) {
w = 1;
if (link->pos[i].y == Y(yf) && link->pos[i].x >= X(xf)) {
if (yt >= 0) {
link->pos[i].y = Y(yt);
if (xt > xf)
link->pos[i].x = safe_add(link->pos[i].x, -xf + xt);
else
link->pos[i].x = link->pos[i].x -xf + xt;
}
else memmove(&link->pos[i], &link->pos[i+1], (link->n-i-1) * sizeof(struct point)), link->n--, i--;
}
} else {
link->first_point_to_move = safe_add(i, 1);
}
if (!w) last_link_to_move = n;
}
w = 0;
if (yt >= 0) for (t = last_tag_to_move->next; (void *)t != &p->data->tags; t = t->next) {
if (t->y == Y(yf)) {
w = 1;
if (t->x >= X(xf)) {
t->y = Y(yt);
if (xt > xf)
t->x = safe_add(t->x, -xf + xt);
else
t->x += -xf + xt;
}
}
if (!w) last_tag_to_move = t;
}
}
static inline void copy_chars(struct part *p, int x, int y, int xl, chr *d)
{
if (xl <= 0) return;
xpand_lines(p, y);
xpand_line(p, y, safe_add(x,xl)-1);
for (; xl; xl--, x++, d++) POS(x, y) = *d;
}
static inline void move_chars(struct part *p, int x, int y, int nx, int ny)
{
if (LEN(y) - x <= 0) return;
copy_chars(p, nx, ny, LEN(y) - x, &POS(x, y));
SLEN(y, x);
move_links(p, x, y, nx, ny);
}
static inline void shift_chars(struct part *p, int y, int s)
{
chr *a;
int l = LEN(y);
if ((unsigned)l > MAXINT / sizeof(chr)) overalloc();
a = mem_alloc(l * sizeof(chr));
memcpy(a, &POS(0, y), l * sizeof(chr));
set_hchars(p, 0, y, s, ' ', p->attribute);
copy_chars(p, s, y, l, a);
mem_free(a);
move_links(p, 0, y, s, y);
}
static inline void del_chars(struct part *p, int x, int y)
{
SLEN(y, x);
move_links(p, x, y, -1, -1);
}
#define rm(x) ((x).width - (x).rightmargin > 0 ? (x).width - (x).rightmargin : 0)
static void line_break(void *);
static int split_line(struct part *p)
{
int i;
for (i = rm(par_format); i >= par_format.leftmargin; i--)
if (i < p->spl && p->spaces[i]) goto split;
for (i = par_format.leftmargin; i < p->cx ; i++)
if (i < p->spl && p->spaces[i]) goto split;
if (p->cx >= 0 && safe_add(p->cx, par_format.rightmargin) > p->x) p->x = p->cx + par_format.rightmargin;
return 0;
split:
if (safe_add(i, par_format.rightmargin) > p->x) p->x = i + par_format.rightmargin;
if (p->data) {
#ifdef DEBUG
if (POS(i, p->cy).ch != ' ') internal("bad split: %c", (unsigned char)POS(i, p->cy).ch);
#endif
move_chars(p, safe_add(i,1), p->cy, par_format.leftmargin, safe_add(p->cy,1));
del_chars(p, i, p->cy);
}
memmove(p->spaces, p->spaces + safe_add(i, 1), p->spl - i - 1);
memset(p->spaces + p->spl - i - 1, 0, i + 1);
memmove(p->spaces + par_format.leftmargin, p->spaces, p->spl - par_format.leftmargin);
p->cy = safe_add(p->cy, 1);
p->cx -= i - par_format.leftmargin + 1;
if (p->cx == par_format.leftmargin) p->cx = -1;
if (p->y < safe_add(p->cy, (p->cx != -1))) p->y = p->cy + (p->cx != -1);
return 1 + (p->cx == -1);
}
static void align_line(struct part *p, int y)
{
int na;
if (!p->data) return;
if (!LEN(y) || par_format.align == AL_LEFT || par_format.align == AL_NO || par_format.align == AL_BLOCK /* !!! fixme! */) return;
na = rm(par_format) - LEN(y);
if (par_format.align == AL_CENTER) na /= 2;
if (na > 0) shift_chars(p, y, na);
}
struct link *new_link(struct f_data *f)
{
if (!f) return NULL;
if (!(f->nlinks & (ALLOC_GR - 1))) {
if ((unsigned)f->nlinks > MAXINT / sizeof(struct link) - ALLOC_GR) overalloc();
f->links = mem_realloc(f->links, (f->nlinks + ALLOC_GR) * sizeof(struct link));
}
memset(&f->links[f->nlinks], 0, sizeof(struct link));
#ifdef G
f->links[f->nlinks].r.x1 = MAXINT;
f->links[f->nlinks].r.y1 = MAXINT;
#endif
return &f->links[f->nlinks++];
}
void html_tag(struct f_data *f, unsigned char *t, int x, int y)
{
struct tag *tag;
unsigned char *tt;
int ll;
if (!f) return;
tt = init_str();
ll = 0;
add_conv_str(&tt, &ll, t, (int)strlen(cast_const_char t), -2);
tag = mem_alloc(sizeof(struct tag) + strlen(cast_const_char tt) + 1);
tag->x = x;
tag->y = y;
strcpy(cast_char tag->name, cast_const_char tt);
add_to_list(f->tags, tag);
if ((void *)last_tag_for_newline == &f->tags) last_tag_for_newline = tag;
mem_free(tt);
}
unsigned char *last_link = NULL;
unsigned char *last_target = NULL;
unsigned char *last_image = NULL;
struct form_control *last_form = NULL;
struct js_event_spec *last_js_event = NULL;
static int nobreak;
struct conv_table *convert_table;
static void put_chars(void *p_, unsigned char *c, int l)
{
struct part *p = p_;
static struct text_attrib_beginning ta_cache = { -1, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, 0, 0 };
static int bg_cache;
static int fg_cache;
char_t *uni_c = DUMMY;
int bg, fg;
int i;
struct link *link;
struct point *pt;
int ll;
if (l < 0) overalloc();
/*printf("%d-", p->cx);for (i=0; i<l; i++) printf("%c", c[i]); printf("-\n");sleep(1);*/
while (p->cx <= par_format.leftmargin && l && *c == ' ' && par_format.align != AL_NO) c++, l--;
if (!l) return;
if (p->cx < par_format.leftmargin) p->cx = par_format.leftmargin;
if (c[0] != ' ' || (c[1] && c[1] != ' ')) {
last_tag_for_newline = (void *)&p->data->tags;
}
#ifdef ENABLE_UTF8
if (d_opt->cp == utf8_table && !(format_.attr & AT_GRAPHICS)) {
int pl;
unsigned char *cc;
if (p->utf8_part_len) {
unsigned char new_part[7];
unsigned char *q;
next_utf_byte:
if ((*c & 0xc0) != 0x80)
goto bad_utf;
p->utf8_part[p->utf8_part_len++] = *c;
p->utf8_part[p->utf8_part_len] = 0;
c++;
l--;
q = p->utf8_part;
if (!get_utf_8(&q)) {
if (p->utf8_part_len == sizeof(p->utf8_part) - 1)
goto bad_utf;
if (l) goto next_utf_byte;
return;
}
pl = p->utf8_part_len;
p->utf8_part_len = 0;
strcpy(cast_char new_part, cast_const_char p->utf8_part);
put_chars(p, new_part, pl);
}
bad_utf:
p->utf8_part_len = 0;
if (!l) return;
uni_c = mem_alloc(l * sizeof(char_t));
ll = 0;
cc = c;
next_utf_char:
pl = utf8chrlen(*cc);
if (safe_add((int)(cc - c), pl) > l) {
memcpy(p->utf8_part, cc, p->utf8_part_len = l - (int)(cc - c));
goto utf_done;
} else {
if (!pl) {
cc++;
} else {
unsigned un;
GET_UTF_8(cc, un);
if (un != 0xad) {
uni_c[ll] = un;
ll = safe_add(ll, 1);
}
}
if (cc < c + l) goto next_utf_char;
}
utf_done:
if (!ll) {
mem_free(uni_c);
return;
}
} else
#endif
{
ll = l;
}
if (last_link || last_image || last_form || format_.link || format_.image
|| format_.form || format_.js_event || last_js_event
) goto process_link;
no_l:
/*printf("%d %d\n",p->cx, p->cy);*/
if (memcmp(&ta_cache, &format_, sizeof(struct text_attrib_beginning))) goto format_change;
bg = bg_cache, fg = fg_cache;
end_format_change:
if (p->y < safe_add(p->cy, 1)) p->y = p->cy + 1;
if (nowrap && safe_add(p->cx, ll) > rm(par_format)) {
mem_free(uni_c);
return;
}
#ifdef ENABLE_UTF8
if (d_opt->cp == utf8_table && !(format_.attr & AT_GRAPHICS)) {
set_hline_uni(p, p->cx, p->cy, ll, uni_c, ((fg&0x08)<<3)|(bg<<3)|(fg&0x07));
} else
#endif
{
set_hline(p, p->cx, p->cy, l, c, ((fg&0x08)<<3)|(bg<<3)|(fg&0x07));
}
p->cx += ll;
nobreak = 0;
if (par_format.align != AL_NO)
while (p->cx > rm(par_format) && p->cx > par_format.leftmargin) {
int x;
if (!(x = split_line(p))) break;
align_line(p, p->cy - 1);
nobreak = x - 1;
}
if (safe_add((p->xa = safe_add(p->xa, ll)) - (c[l-1] == ' ' && par_format.align != AL_NO), safe_add(par_format.leftmargin, par_format.rightmargin)) > p->xmax) p->xmax = p->xa - (c[l-1] == ' ' && par_format.align != AL_NO) + par_format.leftmargin + par_format.rightmargin;
mem_free(uni_c);
return;
/* !!! WARNING: THE FOLLOWING CODE IS SHADOWED IN HTML_GR.C */
process_link:
if ((last_link || last_image || last_form) &&
!xstrcmp(format_.link, last_link) && !xstrcmp(format_.target, last_target) &&
!xstrcmp(format_.image, last_image) && format_.form == last_form
&& ((!format_.js_event && !last_js_event) || !compare_js_event_spec(format_.js_event, last_js_event))
) {
if (!p->data) goto x;
link = &p->data->links[p->data->nlinks - 1];
if (!p->data->nlinks) {
internal("no link");
goto no_l;
}
goto set_link;
x:;
} else {
if (last_link) mem_free(last_link);
if (last_target) mem_free(last_target);
if (last_image) mem_free(last_image);
free_js_event_spec(last_js_event);
last_link = last_target = last_image = NULL;
last_form = NULL;
last_js_event = NULL;
if (!(format_.link || format_.image || format_.form || format_.js_event)) goto no_l;
if (d_opt->num_links || d_opt->braille) {
unsigned char s[64];
unsigned char *fl = format_.link, *ft = format_.target, *fi = format_.image;
struct form_control *ff = format_.form;
struct js_event_spec *js = format_.js_event;
format_.link = format_.target = format_.image = NULL;
format_.form = NULL;
format_.js_event = NULL;
if (d_opt->num_links) {
s[0] = '[';
snzprint(s + 1, 62, p->link_num);
strcat(cast_char s, "]");
} else {
if (ff && (ff->type == FC_TEXT || ff->type == FC_PASSWORD || ff->type == FC_FILE || ff->type == FC_TEXTAREA)) {
strcpy(cast_char s, ">");
} else if (ff && (ff->type == FC_CHECKBOX || ff->type == FC_RADIO || ff->type == FC_SELECT)) {
strcpy(cast_char s, "");
} else {
strcpy(cast_char s, "~");
}
}
put_chars(p, s, (int)strlen(cast_const_char s));
if (ff && ff->type == FC_TEXTAREA) line_break(p);
if (p->cx < par_format.leftmargin) p->cx = par_format.leftmargin;
format_.link = fl, format_.target = ft, format_.image = fi;
format_.form = ff;
format_.js_event = js;
}
p->link_num++;
last_link = stracpy(format_.link);
last_target = stracpy(format_.target);
last_image = stracpy(format_.image);
last_form = format_.form;
copy_js_event_spec(&last_js_event, format_.js_event);
if (!p->data) goto no_l;
if (!(link = new_link(p->data))) goto no_l;
link->num = p->link_num - 1;
link->pos = DUMMY;
copy_js_event_spec(&link->js_event, format_.js_event);
if (!last_form) {
link->type = L_LINK;
link->where = stracpy(last_link);
link->target = stracpy(last_target);
} else {
link->type = last_form->type == FC_TEXT || last_form->type == FC_PASSWORD || last_form->type == FC_FILE ? L_FIELD : last_form->type == FC_TEXTAREA ? L_AREA : last_form->type == FC_CHECKBOX || last_form->type == FC_RADIO ? L_CHECKBOX : last_form->type == FC_SELECT ? L_SELECT : L_BUTTON;
link->form = last_form;
link->target = stracpy(last_form->target);
}
link->where_img = stracpy(last_image);
if (link->type != L_FIELD && link->type != L_AREA) {
bg = find_nearest_color(&format_.clink, 8);
fg = find_nearest_color(&format_.bg, 8);
fg = fg_color(fg, bg);
} else {
fg = find_nearest_color(&format_.fg, 8);
bg = find_nearest_color(&format_.bg, 8);
fg = fg_color(fg, bg);
}
link->sel_color = get_attribute(fg, bg);
link->n = 0;
set_link:
if ((unsigned)link->n + (unsigned)ll > MAXINT / sizeof(struct point)) overalloc();
pt = mem_realloc(link->pos, (link->n + ll) * sizeof(struct point));
link->pos = pt;
for (i = 0; i < ll; i++) pt[link->n + i].x = X(p->cx) + i,
pt[link->n + i].y = Y(p->cy);
link->n += ll;
}
goto no_l;
format_change:
bg = find_nearest_color(&format_.bg, 8);
fg = find_nearest_color(&format_.fg, 16);
fg = fg_color(fg, bg);
if (format_.attr & AT_ITALIC) fg = fg ^ 0x01;
if (format_.attr & AT_UNDERLINE) fg = (fg ^ 0x04) | 0x08;
if (format_.attr & AT_BOLD) fg = fg | 0x08;
fg = fg_color(fg, bg);
if (format_.attr & AT_GRAPHICS) bg = bg | 0x10;
memcpy(&ta_cache, &format_, sizeof(struct text_attrib_beginning));
fg_cache = fg; bg_cache = bg;
goto end_format_change;
}
static void line_break(void *p_)
{
struct part *p = p_;
struct tag *t;
/*printf("-break-\n");*/
if (p->cx >= 0 && safe_add(p->cx, par_format.rightmargin) > p->x) p->x = p->cx + par_format.rightmargin;
if (nobreak) {
nobreak = 0;
p->cx = -1;
p->xa = 0;
return;
}
if (!p->data) goto e;
xpand_lines(p, safe_add(p->cy, 1));
if (p->cx > par_format.leftmargin && LEN(p->cy) > p->cx - 1 && POS(p->cx-1, p->cy).ch == ' ') del_chars(p, p->cx-1, p->cy), p->cx--;
if (p->cx > 0) align_line(p, p->cy);
if (p->data) for (t = last_tag_for_newline; t && (void *)t != &p->data->tags; t = t->prev) {
t->x = X(0);
t->y = Y(p->cy + 1);
}
e:
p->cy++; p->cx = -1; p->xa = 0;
if (p->spl > d_opt->xw) p->spl = d_opt->xw;
memset(p->spaces, 0, p->spl);
}
int g_ctrl_num;
/* SHADOWED IN g_html_form_control */
static void html_form_control(struct part *p, struct form_control *fc)
{
if (!p->data) {
add_to_list(p->uf, fc);
return;
}
fc->g_ctrl_num = g_ctrl_num;
g_ctrl_num = safe_add(g_ctrl_num, 1);
if (fc->type == FC_TEXT || fc->type == FC_PASSWORD || fc->type == FC_TEXTAREA) {
unsigned char *dv = convert_string(convert_table, fc->default_value, (int)strlen(cast_const_char fc->default_value), d_opt);
if (dv) {
mem_free(fc->default_value);
fc->default_value = dv;
}
}
if (fc->type == FC_TEXTAREA) {
unsigned char *p;
for (p = fc->default_value; p[0]; p++) if (p[0] == '\r') {
if (p[1] == '\n') memmove(p, p + 1, strlen(cast_const_char p)), p--;
else p[0] = '\n';
}
}
add_to_list(p->data->forms, fc);
}
static void add_frameset_entry(struct frameset_desc *fsd, struct frameset_desc *subframe, unsigned char *name, unsigned char *url, int marginwidth, int marginheight, unsigned char scrolling)
{
if (fsd->yp >= fsd->y) return;
fsd->f[fsd->xp + fsd->yp * fsd->x].subframe = subframe;
fsd->f[fsd->xp + fsd->yp * fsd->x].name = stracpy(name);
fsd->f[fsd->xp + fsd->yp * fsd->x].url = stracpy(url);
fsd->f[fsd->xp + fsd->yp * fsd->x].marginwidth = marginwidth;
fsd->f[fsd->xp + fsd->yp * fsd->x].marginheight = marginheight;
fsd->f[fsd->xp + fsd->yp * fsd->x].scrolling = scrolling;
if (++fsd->xp >= fsd->x) fsd->xp = 0, fsd->yp++;
}
struct frameset_desc *create_frameset(struct f_data *fda, struct frameset_param *fp)
{
int i;
struct frameset_desc *fd;
if (!fp->x || !fp->y) {
internal("zero size of frameset");
return NULL;
}
if (fp->x && (unsigned)fp->x * (unsigned)fp->y / (unsigned)fp->x != (unsigned)fp->y) overalloc();
if ((unsigned)fp->x * (unsigned)fp->y > (MAXINT - sizeof(struct frameset_desc)) / sizeof(struct frame_desc)) overalloc();
fd = mem_calloc(sizeof(struct frameset_desc) + fp->x * fp->y * sizeof(struct frame_desc));
fd->n = fp->x * fp->y;
fd->x = fp->x;
fd->y = fp->y;
for (i = 0; i < fd->n; i++) {
fd->f[i].xw = fp->xw[i % fp->x];
fd->f[i].yw = fp->yw[i / fp->x];
}
if (fp->parent) add_frameset_entry(fp->parent, fd, NULL, NULL, -1, -1, SCROLLING_AUTO);
else if (!fda->frame_desc) fda->frame_desc = fd;
else mem_free(fd), fd = NULL;
return fd;
}
void create_frame(struct frame_param *fp)
{
add_frameset_entry(fp->parent, NULL, fp->name, fp->url, fp->marginwidth, fp->marginheight, fp->scrolling);
}
void process_script(struct f_data *f, unsigned char *t)
{
#ifdef JS
if (t && !f->script_href_base) f->script_href_base = stracpy(format_.href_base);
if (!d_opt->js_enable) return;
if (t) {
unsigned char *u;
u = join_urls(f->script_href_base, t);
if (u) {
request_additional_file(f, u);
mem_free(u);
}
}
f->are_there_scripts = 1;
#endif
}
void set_base(struct f_data *f, unsigned char *t)
{
#ifdef JS
if (!f->script_href_base) f->script_href_base = stracpy(format_.href_base);
#endif
}
void html_process_refresh(struct f_data *f, unsigned char *url, int time)
{
if (!f) return;
if (f->refresh) return;
if (!url) f->refresh = stracpy(f->rq->url);
else f->refresh = join_urls(f->rq->url, url);
f->refresh_seconds = time;
}
static void *html_special(void *p_, int c, ...)
{
struct part *p = p_;
va_list l;
unsigned char *t;
struct form_control *fc;
struct frameset_param *fsp;
struct frame_param *fp;
struct refresh_param *rp;
va_start(l, c);
switch (c) {
case SP_TAG:
t = va_arg(l, unsigned char *);
va_end(l);
html_tag(p->data, t, X(p->cx >= 0 ? p->cx : 0), Y(p->cy));
break;
case SP_CONTROL:
fc = va_arg(l, struct form_control *);
va_end(l);
html_form_control(p, fc);
break;
case SP_TABLE:
return convert_table;
case SP_USED:
return (void *)(my_intptr_t)!!p->data;
case SP_FRAMESET:
fsp = va_arg(l, struct frameset_param *);
va_end(l);
return create_frameset(p->data, fsp);
case SP_FRAME:
fp = va_arg(l, struct frame_param *);
va_end(l);
create_frame(fp);
break;
case SP_NOWRAP:
nowrap = va_arg(l, int);
va_end(l);
break;
case SP_SCRIPT:
t = va_arg(l, unsigned char *);
va_end(l);
if (p->data) process_script(p->data, t);
break;
case SP_REFRESH:
rp = va_arg(l, struct refresh_param *);
va_end(l);
html_process_refresh(p->data, rp->url, rp->time);
break;
case SP_SET_BASE:
t = va_arg(l, unsigned char *);
va_end(l);
if (p->data) set_base(p->data, t);
break;
default:
va_end(l);
internal("html_special: unknown code %d", c);
}
return NULL;
}
static void do_format(unsigned char *start, unsigned char *end, struct part *part, unsigned char *head)
{
pr(
parse_html(start, end, (void (*)(void *, unsigned char *, int))put_chars, line_break, (void *(*)(void *, int, ...))html_special, part, head);
) {};
}
int margin;