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html_gr.c
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html_gr.c
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/* html_gr.c
* HTML parser in graphics mode
* (c) 2002 Mikulas Patocka
* This file is a part of the Links program, released under GPL.
*/
#include "cfg.h"
#ifdef G
#include "links.h"
static int g_nobreak;
static int get_real_font_size(int size)
{
int fs=d_opt->font_size;
if (size < 1) size = 1;
if (size > 7) size = 7;
switch (size) {
case 1: return (14*fs)>>4;
case 2: return (15*fs)>>4;
case 3: return (16*fs)>>4;
case 4: return (19*fs)>>4;
case 5: return (22*fs)>>4;
case 6: return (25*fs)>>4;
case 7: return (28*fs)>>4;
}
return 0;
}
struct background *get_background(unsigned char *bg, unsigned char *bgcolor)
{
struct background *b;
struct rgb r;
b = mem_alloc(sizeof(struct background));
{
if (bgcolor && !decode_color(bgcolor, &r)) {
b->u.sRGB=(r.r << 16) + (r.g << 8) + r.b;
} else {
b->u.sRGB=(d_opt->default_bg.r << 16) + (d_opt->default_bg.g << 8) + d_opt->default_bg.b;
}
}
return b;
}
static void g_put_chars(void *, unsigned char *, int);
/* Returns 0 to 2550 */
static int gray (int r, int g, int b)
{
return r*3+g*6+b;
}
/* Tells if two colors are too near to be legible one on another */
/* 1=too near 0=not too near */
static int too_near(int r1, int g1, int b1, int r2, int g2, int b2)
{
int diff = abs(r1-r2) * 3 + abs(g1-g2) * 6 + abs(b1-b2);
return diff < 0x17f;
}
/* Fixes foreground based on background */
static void separate_fg_bg(int *fgr, int *fgg, int *fgb
, int bgr, int bgg, int bgb)
{
if (too_near(*fgr, *fgg, *fgb, bgr, bgg, bgb)) {
*fgr = 255 - bgr;
*fgg = 255 - bgg;
*fgb = 255 - bgb;
} else return;
if (too_near(*fgr, *fgg, *fgb, bgr, bgg, bgb)) {
if (gray(bgr, bgg, bgb) <= 1275)
*fgr = *fgg = *fgb = 255;
else
*fgr = *fgg = *fgb = 0;
}
}
static unsigned char *make_html_font_name(int attr)
{
unsigned char *str;
int len;
str=init_str();len=0;
add_to_str(&str, &len, cast_uchar G_HTML_DEFAULT_FAMILY);
add_to_str(&str, &len, attr & AT_BOLD ? cast_uchar "-bold" : cast_uchar "-medium");
add_to_str(&str, &len, attr & AT_ITALIC ? cast_uchar "-italic-serif" : cast_uchar "-roman-serif");
add_to_str(&str, &len, attr & AT_FIXED ? cast_uchar "-mono" : cast_uchar "-vari");
return str;
}
static struct style *get_style_by_ta(struct text_attrib *ta)
{
int fg_r,fg_g,fg_b; /* sRGB 0-255 values */
int fs = get_real_font_size(ta->fontsize);
struct style*stl;
unsigned char *fontname;
fg_r=ta->fg.r;
fg_g=ta->fg.g;
fg_b=ta->fg.b;
separate_fg_bg(&fg_r,&fg_g,&fg_b,ta->bg.r,ta->bg.g,ta->bg.b);
stl = g_get_style((fg_r << 16) + (fg_g << 8) + fg_b, (ta->bg.r << 16) +
(ta->bg.g << 8) + ta->bg.b, fs,
fontname=make_html_font_name(ta->attr),
ta->attr & AT_UNDERLINE ? FF_UNDERLINE : 0);
mem_free(fontname);
return stl;
}
#define rm(x) ((x).width - (x).rightmargin * G_HTML_MARGIN > 0 ? (x).width - (x).rightmargin * G_HTML_MARGIN : 0)
#ifndef SPAD
static inline int pw2(int a)
{
int x = 1;
while (x < a && x) {
if ((unsigned)x > MAXINT / 2) overalloc();
x <<= 1;
}
return x;
}
#else
static inline int pw2(int a)
{
return a;
}
#endif
void flush_pending_line_to_obj(struct g_part *p, int minheight)
{
int i, pp, pos, w, lbl;
struct g_object_line *l = p->line;
struct g_object_area *a;
if (!l) {
return;
}
for (i = l->n_entries - 1; i >= 0; i--) {
struct g_object_text *go = (struct g_object_text *)l->entries[i];
if (go->draw == g_text_draw) {
int l = (int)strlen(cast_const_char go->text);
while (l && go->text[l - 1] == ' ') go->text[--l] = 0, go->xw -= g_char_width(go->style, ' ');
if (go->xw < 0) internal("xw(%d) < 0", go->xw);
}
if (!go->xw) continue;
break;
}
scan_again:
pp = 0;
w = minheight;
lbl = 0;
for (i = 0; i < l->n_entries; i++) {
int yy = l->entries[i]->y;
if (yy >= G_OBJ_ALIGN_SPECIAL) yy = 0;
pp = safe_add(pp, l->entries[i]->xw);
if (l->entries[i]->xw && safe_add(l->entries[i]->yw, yy) > w) w = safe_add(l->entries[i]->yw, yy);
if (yy < lbl) lbl = yy;
}
if (lbl < 0) {
for (i = 0; i < l->n_entries; i++) {
if (l->entries[i]->y < G_OBJ_ALIGN_SPECIAL) l->entries[i]->y = safe_add(l->entries[i]->y, -lbl);
}
goto scan_again;
}
if (par_format.align == AL_CENTER) pos = (safe_add(rm(par_format), par_format.leftmargin * G_HTML_MARGIN) - pp) / 2;
else if (par_format.align == AL_RIGHT) pos = rm(par_format) - pp;
else pos = par_format.leftmargin * G_HTML_MARGIN;
if (pos < par_format.leftmargin * G_HTML_MARGIN) pos = par_format.leftmargin * G_HTML_MARGIN;
pp = pos;
for (i = 0; i < l->n_entries; i++) {
l->entries[i]->x = pp;
pp = safe_add(pp, l->entries[i]->xw);
if (l->entries[i]->y < G_OBJ_ALIGN_SPECIAL) {
l->entries[i]->y = w - l->entries[i]->yw - l->entries[i]->y;
} else if (l->entries[i]->y == G_OBJ_ALIGN_TOP) {
l->entries[i]->y = 0;
} else if (l->entries[i]->y == G_OBJ_ALIGN_MIDDLE) {
l->entries[i]->y = (w - safe_add(l->entries[i]->yw, 1)) / 2;
}
}
l->x = 0;
l->xw = par_format.width;
l->yw = w;
l->y = p->cy;
if (l->xw > p->root->xw) p->root->xw = l->xw;
p->cy = safe_add(p->cy, w);
p->root->yw = p->cy;
p->root->n_lines = safe_add(p->root->n_lines, 1);
if ((unsigned)p->root->n_lines > (MAXINT - sizeof(struct g_object_area)) / 2 / sizeof(struct g_object_text *) + 1) overalloc();
a = mem_realloc(p->root, sizeof(struct g_object_area) + sizeof(struct g_object_text *) * pw2(p->root->n_lines + 1));
/* note: +1 is for extend_area */
p->root = a;
p->root->lines[p->root->n_lines - 1] = l;
p->line = NULL;
p->w.pos = 0;
p->w.last_wrap = NULL;
p->w.last_wrap_obj = NULL;
}
void add_object_to_line(struct g_part *pp, struct g_object_line **lp, struct g_object *go)
{
struct g_object_line *l;
if (go && (go->xw < 0 || go->yw < 0)) {
internal("object has negative size: %d,%d", go->xw, go->yw);
return;
}
if (!*lp) {
l = mem_calloc(sizeof(struct g_object_line) + sizeof(struct g_object_text *));
l->mouse_event = g_line_mouse;
l->draw = g_line_draw;
l->destruct = g_line_destruct;
l->get_list = g_line_get_list;
/*l->x = 0;
l->y = 0;
l->xw = 0;
l->yw = 0;*/
l->bg = pp->root->bg;
if (!go) {
*lp = l;
return;
}
l->n_entries = 1;
} else {
if (!go) return;
(*lp)->n_entries++;
if ((unsigned)(*lp)->n_entries > (MAXINT - sizeof(struct g_object_line)) / sizeof(struct g_object *)) overalloc();
l = mem_realloc(*lp, sizeof(struct g_object_line) + sizeof(struct g_object *) * (*lp)->n_entries);
*lp = l;
}
l->entries[l->n_entries - 1] = go;
*lp = l;
if (pp->cx == -1) pp->cx = par_format.leftmargin * G_HTML_MARGIN;
if (go->xw) {
pp->cx = safe_add(pp->cx, pp->cx_w);
pp->cx_w = 0;
pp->cx = safe_add(pp->cx, go->xw);
}
}
void flush_pending_text_to_line(struct g_part *p)
{
struct g_object_text *t = p->text;
if (!t) return;
add_object_to_line(p, &p->line, (struct g_object *)t);
p->text = NULL;
}
static void split_line_object(struct g_part *p, struct g_object_text *text, unsigned char *ptr)
{
struct g_object_text *t2;
struct g_object_line *l2;
int n;
if (!ptr) {
if (p->line && p->line->n_entries && (struct g_object *)text == p->line->entries[p->line->n_entries - 1]) {
flush_pending_line_to_obj(p, 0);
goto wwww;
}
t2 = NULL;
goto nt2;
}
#ifdef DEBUG
if (ptr < text->text || ptr >= text->text + strlen(cast_const_char text->text))
internal("split_line_object: split point (%p) pointing out of object (%p,%lx)", ptr, text->text, (unsigned long)strlen(cast_const_char text->text));
#endif
t2 = mem_calloc(sizeof(struct g_object_text) + strlen(cast_const_char ptr));
t2->mouse_event = g_text_mouse;
t2->draw = g_text_draw;
t2->destruct = g_text_destruct;
t2->get_list = NULL;
if (*ptr == ' ') {
strcpy(cast_char t2->text, cast_const_char(ptr + 1));
*ptr = 0;
/*debug("split: (%s)(%s)", text->text, ptr + 1);*/
} else {
strcpy(cast_char t2->text, cast_const_char ptr);
ptr[0] = '-';
ptr[1] = 0;
}
t2->y = text->y;
t2->style = g_clone_style(text->style);
t2->link_num = text->link_num;
t2->link_order = text->link_order;
text->xw = g_text_width(text->style, text->text);
nt2:
if (p->line) for (n = 0; n < p->line->n_entries; n++) if (p->line->entries[n] == (struct g_object *)text) goto found;
if (text != p->text) {
internal("split_line_object: bad wrap");
t2->destruct(t2);
mem_free(t2);
return;
}
if (0) {
int nn;
int qw;
found:
n = safe_add(n, !ptr);
l2 = mem_calloc(sizeof(struct g_object_line) + (p->line->n_entries - n) * sizeof(struct g_object_text *));
l2->mouse_event = g_line_mouse;
l2->draw = g_line_draw;
l2->destruct = g_line_destruct;
l2->get_list = g_line_get_list;
l2->bg = p->root->bg;
l2->n_entries = p->line->n_entries - n;
l2->entries[0] = (struct g_object *)t2;
memcpy(&l2->entries[!!ptr], p->line->entries + safe_add(n, !!ptr), (l2->n_entries - !!ptr) * sizeof(struct g_object_text *));
p->line->n_entries = safe_add(n, !!ptr);
flush_pending_line_to_obj(p, 0);
p->line = l2;
if (ptr) {
t2->xw = g_text_width(t2->style, t2->text);
t2->yw = text->yw;
p->w.pos = 0;
}
for (nn = 0; nn < l2->n_entries; nn++) {
p->w.pos = safe_add(p->w.pos, l2->entries[nn]->xw); /* !!! FIXME: nastav last_wrap */
/*debug("a1: %d (%s)", l2->entries[nn]->xw, tt->text);*/
}
wwww:
qw = g_text_width(p->text->style, p->text->text);
if (p->text) p->w.pos = safe_add(p->w.pos, qw);
/*debug("%d", p->w.pos);*/
} else {
flush_pending_text_to_line(p);
flush_pending_line_to_obj(p, 0);
p->line = NULL;
t2->xw = g_text_width(t2->style, t2->text);
t2->yw = text->yw;
p->text = t2;
p->pending_text_len = -1;
p->w.pos = t2->xw;
p->cx_w = g_char_width(t2->style, ' ');
}
p->w.last_wrap = NULL;
p->w.last_wrap_obj = NULL;
t2 = p->text;
if (t2) {
int sl = (int)strlen(cast_const_char t2->text);
if (sl >= 1 && t2->text[sl - 1] == ' ') {
p->w.last_wrap = &t2->text[sl - 1];
p->w.last_wrap_obj = t2;
} else if (sl >= 2 && t2->text[sl - 2] == 0xc2 && t2->text[sl - 1] == 0xad) {
p->w.last_wrap = &t2->text[sl - 2];
p->w.last_wrap_obj = t2;
}
}
}
void add_object(struct g_part *p, struct g_object *o)
{
g_nobreak = 0;
flush_pending_text_to_line(p);
p->w.width = rm(par_format) - par_format.leftmargin * G_HTML_MARGIN;
if (safe_add(p->w.pos, o->xw) > p->w.width) flush_pending_line_to_obj(p, 0);
add_object_to_line(p, &p->line, o);
p->w.last_wrap = NULL;
p->w.last_wrap_obj = o;
p->w.pos = safe_add(p->w.pos, o->xw);
}
static void g_line_break(void *p_)
{
struct g_part *p = p_;
if (g_nobreak) {
g_nobreak = 0;
return;
}
flush_pending_text_to_line(p);
if (!p->line || par_format.align == AL_NO) {
add_object_to_line(p, &p->line, NULL);
empty_line:
flush_pending_line_to_obj(p, get_real_font_size(format_.fontsize));
} else {
int i;
for (i = 0; i < p->line->n_entries; i++) {
struct g_object *go = p->line->entries[i];
if (go->destruct != g_tag_destruct)
goto flush;
}
goto empty_line;
flush:
flush_pending_line_to_obj(p, 0);
}
if (p->cx > p->xmax) p->xmax = p->cx;
p->cx = -1;
p->cx_w = 0;
}
/* SHADOWED IN html_form_control */
static void g_html_form_control(struct g_part *p, struct form_control *fc)
{
if (!p->data) {
/*destroy_fc(fc);
mem_free(fc);*/
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;
}
/*
for (i = 0; i < fc->nvalues; i++) if ((dv = convert_string(convert_table, fc->values[i], strlen(cast_const_char fc->values[i]), d_opt))) {
mem_free(fc->values[i]);
fc->values[i] = 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 struct link **putchars_link_ptr = NULL;
/* Probably releases clickable map */
void release_image_map(struct image_map *map)
{
int i;
if (!map) return;
for (i = 0; i < map->n_areas; i++) mem_free(map->area[i].coords);
mem_free(map);
}
int is_in_area(struct map_area *a, int x, int y)
{
int i;
int over;
switch (a->shape) {
case SHAPE_DEFAULT:
return 1;
case SHAPE_RECT:
return a->ncoords >= 4 && x >= a->coords[0] && y >= a->coords[1] && x < a->coords[2] && y < a->coords[3];
case SHAPE_CIRCLE:
return a->ncoords >= 3 && (a->coords[0]-x)*(a->coords[0]-x)+(a->coords[1]-y)*(a->coords[1]-y) <= a->coords[2]*a->coords[2];
case SHAPE_POLY:
over = 0;
if (a->ncoords >= 4) for (i = 0; i + 1 < a->ncoords; i += 2) {
int x1, x2, y1, y2;
x1 = a->coords[i];
y1 = a->coords[i + 1];
x2 = a->coords[0];
y2 = a->coords[1];
if (i + 3 < a->ncoords) {
x2 = a->coords[i + 2];
y2 = a->coords[i + 3];
}
if (y1 > y2) {
int sw;
sw = x1; x1 = x2; x2 = sw;
sw = y1; y1 = y2; y2 = sw;
}
if (y >= y1 && y < y2) {
int po = 10000 * (y - y1) / (y2 - y1);
int xs = x1 + (x2 - x1) * po / 10000;
if (xs >= x) over++;
}
}
return over & 1;
default:
internal("is_in_area: bad shape: %d", a->shape);
}
return 0;
}
/* The size is requested in im->xsize and im->ysize. <0 means
* not specified. Autoscale is requested in im->autoscale.
* If autoscale is specified, im->xsize and im->ysize must
* be >0. */
static void do_image(struct g_part *p, struct image_description *im)
{
struct g_object_image *io;
struct link *link;
link = NULL;
putchars_link_ptr = &link;
g_put_chars(p, NULL, 0);
putchars_link_ptr = NULL;
if (!link) im->link_num = -1;
else {
im->link_num = (int)(link - p->data->links);
im->link_order = link->obj_order;
link->obj_order = safe_add(link->obj_order, 1);
if (link->img_alt) mem_free(link->img_alt);
link->img_alt = stracpy(im->alt);
}
io = insert_image(p, im);
if (!io) goto ab;
io->ismap = im->ismap;
add_object(p, (struct g_object *)io);
if (im->usemap && p->data) {
unsigned char *tag = extract_position(im->usemap);
struct additional_file *af = request_additional_file(current_f_data, im->usemap);
af->need_reparse = 1;
if (af->rq && (af->rq->state == O_LOADING || af->rq->state == O_INCOMPLETE || af->rq->state == O_OK) && af->rq->ce) {
struct memory_list *ml;
struct menu_item *menu;
struct cache_entry *ce = af->rq->ce;
unsigned char *start, *end;
int i;
struct image_map *map;
if (get_file(af->rq, &start, &end)) goto ft;
if (start == end) goto ft;
if (get_image_map(ce->head, start, end, tag, &menu, &ml, format_.href_base, format_.target_base, 0, 0, 0, 1)) goto ft;
map = mem_alloc(sizeof(struct image_map));
map->n_areas = 0;
for (i = 0; menu[i].text; i++) {
struct link_def *ld = menu[i].data;
struct map_area *a;
struct link *link;
int shape =
!ld->shape || !*ld->shape ? SHAPE_RECT :
!strcasecmp(cast_const_char ld->shape, "default") ? SHAPE_DEFAULT :
!strcasecmp(cast_const_char ld->shape, "rect") ? SHAPE_RECT :
!strcasecmp(cast_const_char ld->shape, "circle") ? SHAPE_CIRCLE :
!strcasecmp(cast_const_char ld->shape, "poly") ||
!strcasecmp(cast_const_char ld->shape, "polygon") ? SHAPE_POLY : -1;
if (shape == -1) continue;
if ((unsigned)map->n_areas > (MAXINT - sizeof(struct image_map)) / sizeof(struct map_area) - 1) overalloc();
map = mem_realloc(map, sizeof(struct image_map) + (map->n_areas + 1) * sizeof(struct map_area));
a = &map->area[map->n_areas++];
a->shape = shape;
a->coords = DUMMY;
a->ncoords = 0;
if (ld->coords) {
unsigned char *p = ld->coords;
int num;
next_coord:
num = 0;
while (*p && (*p < '0' || *p > '9')) p++;
if (!*p) goto noc;
while (*p >= '0' && *p <= '9' && num < 10000000) num = num * 10 + *p - '0', p++;
if (*p == '.') {
p++;
while (*p >= '0' && *p <= '9') p++;
}
if (*p == '%' && num < 1000) {
int m = io->xw < io->yw ? io->xw : io->yw;
num = num * m / 100;
p++;
} else num = num * d_opt->image_scale / 100;
if ((unsigned)a->ncoords > MAXINT / sizeof(int) - 1) overalloc();
a->coords = mem_realloc(a->coords, (a->ncoords + 1) * sizeof(int));
a->coords[a->ncoords++] = num;
goto next_coord;
}
noc:
if (!(link = new_link(p->data))) a->link_num = -1;
else {
link->pos = DUMMY;
link->type = L_LINK;
link->where = stracpy(ld->link);
link->target = stracpy(ld->target);
link->img_alt = stracpy(ld->label);
link->where_img = stracpy(im->url);
#ifdef JS
if (ld->onclick || ld->ondblclick || ld->onmousedown || ld->onmouseup || ld->onmouseover || ld->onmouseout || ld->onmousemove) {
create_js_event_spec(&link->js_event);
link->js_event->click_code = stracpy(ld->onclick);
link->js_event->dbl_code = stracpy(ld->ondblclick);
link->js_event->down_code = stracpy(ld->onmousedown);
link->js_event->up_code = stracpy(ld->onmouseup);
link->js_event->over_code = stracpy(ld->onmouseover);
link->js_event->out_code = stracpy(ld->onmouseout);
link->js_event->move_code = stracpy(ld->onmousemove);
}
#endif
a->link_num = (int)(link - p->data->links);
}
if (last_link) mem_free(last_link), last_link = NULL;
}
io->map = map;
freeml(ml);
ft:;
}
if (tag) mem_free(tag);
}
ab:;
}
static void g_hr(struct g_part *gp, struct hr_param *hr)
{
unsigned char bgstr[8];
struct g_object_line *o;
o = mem_calloc(sizeof(struct g_object_line));
o->mouse_event = g_line_mouse;
o->draw = g_line_draw;
o->destruct = g_line_bg_destruct;
o->get_list = g_line_get_list;
/*o->x = 0;
o->y = 0;*/
o->xw = hr->width;
o->yw = hr->size;
table_bg(&format_, bgstr);
o->bg = get_background(NULL, bgstr);
o->n_entries = 0;
flush_pending_text_to_line(gp);
/*flush_pending_line_to_obj(gp, get_real_font_size(format_.fontsize));*/
add_object_to_line(gp, &gp->line, (struct g_object *)o);
line_breax = 0;
gp->cx = -1;
gp->cx_w = 0;
}
static void *g_html_special(void *p_, int c, ...)
{
struct g_part *p = p_;
va_list l;
unsigned char *t;
struct form_control *fc;
struct frameset_param *fsp;
struct frame_param *fp;
struct image_description *im;
struct g_object_tag *tag;
struct refresh_param *rp;
struct hr_param *hr;
va_start(l, c);
switch (c) {
case SP_TAG:
t = va_arg(l, unsigned char *);
va_end(l);
/* not needed to convert %AB here because html_tag will be called anyway */
tag = mem_calloc(sizeof(struct g_object_tag) + strlen(cast_const_char t));
tag->mouse_event = g_dummy_mouse;
tag->draw = g_dummy_draw;
tag->destruct = g_tag_destruct;
strcpy(cast_char tag->name, cast_const_char t);
flush_pending_text_to_line(p);
add_object_to_line(p, &p->line, (struct g_object *)tag);
break;
case SP_CONTROL:
fc = va_arg(l, struct form_control *);
va_end(l);
g_html_form_control(p, fc);
break;
case SP_TABLE:
va_end(l);
return convert_table;
case SP_USED:
va_end(l);
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_SCRIPT:
t = va_arg(l, unsigned char *);
va_end(l);
if (p->data) process_script(p->data, t);
break;
case SP_IMAGE:
im = va_arg(l, struct image_description *);
va_end(l);
do_image(p, im);
break;
case SP_NOWRAP:
va_end(l);
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;
case SP_HR:
hr = va_arg(l, struct hr_param *);
va_end(l);
g_hr(p, hr);
break;
default:
va_end(l);
internal("html_special: unknown code %d", c);
}
return NULL;
}
static unsigned char to_je_ale_prasarna[] = "";
static unsigned char *cached_font_face = to_je_ale_prasarna;
static struct text_attrib_beginning ta_cache = { -1, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, 0, 0 };
static void g_put_chars(void *p_, unsigned char *s, int l)
{
struct g_part *p = p_;
struct g_object_text *t;
struct link *link;
int ptl;
unsigned char *sh;
int qw;
if (l < 0) overalloc();
again:
if (l > 2 && (sh = memchr(s + 1, 0xad, l - 2)) && sh[-1] == 0xc2) {
sh++;
g_put_chars(p_, s, (int)(sh - s));
l -= (int)(sh - s);
s = sh;
goto again;
}
/*fprintf(stderr, "%d: '%.*s'\n", l, l, s);*/
t = NULL;
if (putchars_link_ptr) {
link = NULL;
goto check_link;
}
while (par_format.align != AL_NO && p->cx == -1 && l && *s == ' ') s++, l--;
if (!l) return;
g_nobreak = 0;
if (p->cx < par_format.leftmargin * G_HTML_MARGIN) p->cx = par_format.leftmargin * G_HTML_MARGIN;
if (html_format_changed) {
if (memcmp(&ta_cache, &format_, sizeof(struct text_attrib_beginning)) || xstrcmp(cached_font_face, format_.fontface) || cached_font_face == to_je_ale_prasarna ||
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 (!html_format_changed) internal("html_format_changed not set");*/
flush_pending_text_to_line(p);
if (xstrcmp(cached_font_face, format_.fontface) || cached_font_face == to_je_ale_prasarna) {
if (cached_font_face && cached_font_face != to_je_ale_prasarna) mem_free(cached_font_face);
cached_font_face = stracpy(format_.fontface);
}
memcpy(&ta_cache, &format_, sizeof(struct text_attrib_beginning));
if (p->current_style) g_free_style(p->current_style);
p->current_style = get_style_by_ta(&format_);
}
html_format_changed = 0;
}
/*if (p->cx <= par_format.leftmargin * G_HTML_MARGIN && *s == ' ' && par_format.align != AL_NO) s++, l--;*/
if (!p->text) {
link = NULL;
t = mem_calloc(sizeof(struct g_object_text) + ALLOC_GR);
t->mouse_event = g_text_mouse;
t->draw = g_text_draw;
t->destruct = g_text_destruct;
t->get_list = NULL;
t->style = g_clone_style(p->current_style);
t->yw = t->style->height;
/*t->xw = 0;
t->y = 0;*/
if (format_.baseline) {
if (format_.baseline < 0) t->y = -(t->style->height / 3);
if (format_.baseline > 0) t->y = get_real_font_size(format_.baseline) - (t->style->height / 2);
}
check_link:
if (last_link || last_image || last_form || format_.link || format_.image || format_.form
|| format_.js_event || last_js_event
) goto process_link;
back_link:
if (putchars_link_ptr) {
*putchars_link_ptr = link;
return;
}
if (!link) t->link_num = -1;
else {
t->link_num = (int)(link - p->data->links);
t->link_order = link->obj_order++;
}
t->text[0] = 0;
p->pending_text_len = 0;
p->text = t;
}
if (p->pending_text_len == -1) {
p->pending_text_len = (int)strlen(cast_const_char p->text->text);
ptl = p->pending_text_len;
if (!ptl) ptl = 1;
goto a1;
}
ptl = p->pending_text_len;
if (!ptl) ptl = 1;
safe_add(safe_add(ptl, l), ALLOC_GR);
if (((ptl + ALLOC_GR - 1) & ~(ALLOC_GR - 1)) != ((ptl + l + ALLOC_GR - 1) & ~(ALLOC_GR - 1))) a1: {
struct g_object_text *t;
if ((unsigned)l > MAXINT) overalloc();
if ((unsigned)ptl + (unsigned)l > MAXINT - ALLOC_GR) overalloc();
t = mem_realloc(p->text, sizeof(struct g_object_text) + ((ptl + l + ALLOC_GR - 1) & ~(ALLOC_GR - 1)));
if (p->w.last_wrap >= p->text->text && p->w.last_wrap < p->text->text + p->pending_text_len) p->w.last_wrap = p->w.last_wrap + ((unsigned char *)t - (unsigned char *)p->text);
if (p->w.last_wrap_obj == p->text) p->w.last_wrap_obj = t;
p->text = t;
}
memcpy(p->text->text + p->pending_text_len, s, l), p->text->text[p->pending_text_len = safe_add(p->pending_text_len, l)] = 0;
qw = g_text_width(p->text->style, p->text->text + p->pending_text_len - l);
p->text->xw = safe_add(p->text->xw, qw); /* !!! FIXME: move to g_wrap_text */
if (par_format.align != AL_NO) {
p->w.text = p->text->text + p->pending_text_len - l;
p->w.style = p->text->style;
p->w.obj = p->text;
p->w.width = rm(par_format) - par_format.leftmargin * G_HTML_MARGIN;
p->w.force_break = 0;
if (p->w.width < 0) p->w.width = 0;
if (!g_wrap_text(&p->w)) {
split_line_object(p, p->w.last_wrap_obj, p->w.last_wrap);
}
}
return;
/* !!! WARNING: THE FOLLOWING CODE IS SHADOWED IN HTML_R.C */
process_link:
if ((last_link /*|| last_target*/ || last_image || last_form) &&
!putchars_link_ptr &&
!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 back_link;
if (!p->data->nlinks) {
internal("no link");
goto back_link;
}
link = &p->data->links[p->data->nlinks - 1];
goto back_link;
} 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 back_link;
/*if (d_opt->num_links) {
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;
s[0] = '[';
snzprint(s + 1, 62, p->link_num);
strcat(cast_char s, "]");
g_put_chars(p, s, strlen(cast_const_char s));
if (ff && ff->type == FC_TEXTAREA) g_line_break(p);
if (p->cx < par_format.leftmargin * G_HTML_MARGIN) p->cx = par_format.leftmargin * G_HTML_MARGIN;
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 back_link;
if (!(link = new_link(p->data))) goto back_link;
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);
link->sel_color = 0;
link->n = 0;
}
goto back_link;
}
static void g_do_format(unsigned char *start, unsigned char *end, struct g_part *part, unsigned char *head)
{
pr(
parse_html(start, end, (void (*)(void *, unsigned char *, int))g_put_chars, g_line_break, (void *(*)(void *, int, ...))g_html_special, part, head);
/*if ((part->y -= line_breax) < 0) part->y = 0;*/
flush_pending_text_to_line(part);
flush_pending_line_to_obj(part, 0);
) {};
}
struct g_part *g_format_html_part(unsigned char *start, unsigned char *end, int align, int m, int width, unsigned char *head, int link_num, unsigned char *bg, unsigned char *bgcolor, struct f_data *f_d)
{
int wa;
struct g_part *p;
struct html_element *e;
struct form_control *fc;
int lm = margin;
if (!f_d) {
p = find_table_cache_entry(start, end, align, m, width, 0, link_num);
if (p) return p;
}
margin = m;
/*d_opt->tables = 0;*/
if (last_link) mem_free(last_link);
if (last_image) mem_free(last_image);
if (last_target) mem_free(last_target);
free_js_event_spec(last_js_event);
last_link = last_image = last_target = NULL;
last_form = NULL;
last_js_event = NULL;
cached_font_face = to_je_ale_prasarna;
p = mem_calloc(sizeof(struct g_part));
{
struct g_object_area *a;
a = mem_calloc(sizeof(struct g_object_area) + sizeof(struct g_object_line *));
a->bg = get_background(bg, bgcolor);
if (bgcolor) decode_color(bgcolor, &format_.bg);
if (bgcolor) decode_color(bgcolor, &par_format.bgcolor);
a->mouse_event = g_area_mouse;
a->draw = g_area_draw;
a->destruct = g_area_destruct;
a->get_list = g_area_get_list;
/*a->n_lines = 0;*/
p->root = a;
init_list(p->uf);
}
p->data = f_d;
p->x = p->y = 0;
p->xmax = 0;
html_stack_dup();
e = &html_top;
html_top.dontkill = 2;
html_top.namelen = 0;
par_format.align = align;
par_format.leftmargin = m;
par_format.rightmargin = m;
par_format.width = width;
par_format.list_level = 0;
par_format.list_number = 0;
par_format.dd_margin = 0;
p->cx = -1;
p->cx_w = 0;
g_nobreak = align != AL_NO;
g_do_format(start, end, p, head);
g_nobreak = 0;
line_breax = 1;
while (&html_top != e) {
kill_html_stack_item(&html_top);
if (!&html_top || (void *)&html_top == (void *)&html_stack) {
internal("html stack trashed");
break;
}
}
html_top.dontkill = 0;
wa = g_get_area_width(p->root);
if (wa > p->x) p->x = wa;
g_x_extend_area(p->root, p->x, 0, align);
if (p->x > p->xmax) p->xmax = p->x;
p->y = p->root->yw;
/*debug("WIDTH: obj (%d, %d), p (%d %d)", p->root->xw, p->root->yw, p->x, p->y);*/
kill_html_stack_item(&html_top);
if (!f_d) g_release_part(p), p->root = NULL;
if (cached_font_face && cached_font_face != to_je_ale_prasarna) mem_free(cached_font_face);
cached_font_face = to_je_ale_prasarna;
foreach(fc, p->uf) destroy_fc(fc);
free_list(p->uf);
margin = lm;
if (last_link) mem_free(last_link);
if (last_image) mem_free(last_image);
if (last_target) mem_free(last_target);
free_js_event_spec(last_js_event);
last_link = last_image = last_target = NULL;
last_form = NULL;
last_js_event = NULL;
if (table_level > 1 && !f_d) {
add_table_cache_entry(start, end, align, m, width, 0, link_num, p);
}
return p;
}