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html_tbl.c
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html_tbl.c
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/* html_tbl.c
* Tables in HTML
* (c) 2002 Mikulas Patocka
* This file is a part of the Links program, released under GPL.
*/
#include <limits.h>
#include "links.h"
static void free_table_cache(void);
#define RECT_BOUND_BITS 10 /* --- bound at 1024 pixels */
#define AL_TR -1
#define VAL_TR -1
#define VAL_TOP 0
#define VAL_MIDDLE 1
#define VAL_BOTTOM 2
#define W_AUTO -1
#define W_REL -2
#define F_VOID 0
#define F_ABOVE 1
#define F_BELOW 2
#define F_HSIDES 3
#define F_LHS 4
#define F_RHS 8
#define F_VSIDES 12
#define F_BOX 15
#define R_NONE 0
#define R_ROWS 1
#define R_COLS 2
#define R_ALL 3
#define R_GROUPS 4
static void
get_align(unsigned char *attr, int *a)
{
unsigned char *al;
if ((al = get_attr_val(attr, cast_uchar "align"))) {
if (!(casestrcmp(al, cast_uchar "left")))
*a = AL_LEFT;
if (!(casestrcmp(al, cast_uchar "right")))
*a = AL_RIGHT;
if (!(casestrcmp(al, cast_uchar "center")))
*a = AL_CENTER;
if (!(casestrcmp(al, cast_uchar "justify")))
*a = AL_BLOCK;
if (!(casestrcmp(al, cast_uchar "char")))
*a = AL_RIGHT; /* NOT IMPLEMENTED */
free(al);
}
}
static void
get_valign(unsigned char *attr, int *a)
{
unsigned char *al;
if ((al = get_attr_val(attr, cast_uchar "valign"))) {
if (!(casestrcmp(al, cast_uchar "top")))
*a = VAL_TOP;
if (!(casestrcmp(al, cast_uchar "middle")))
*a = VAL_MIDDLE;
if (!(casestrcmp(al, cast_uchar "bottom")))
*a = VAL_BOTTOM;
if (!(casestrcmp(al, cast_uchar "baseline")))
*a = VAL_TOP; /* NOT IMPLEMENTED */
free(al);
}
}
static void
get_c_width(unsigned char *attr, int *w, int sh)
{
unsigned char *al;
if ((al = get_attr_val(attr, cast_uchar "width"))) {
if (*al && al[strlen(cast_const_char al) - 1] == '*') {
char *end;
unsigned long n;
al[strlen(cast_const_char al) - 1] = 0;
n = strtoul(cast_const_char al, &end, 10);
if (n < 10000 && !*end)
*w = W_REL - (int)n;
} else {
int p = get_width(attr, cast_uchar "width", sh);
if (p >= 0)
*w = p;
}
free(al);
}
}
#define INIT_X 8
#define INIT_Y 8
struct table_cell {
int used;
int spanned;
int mx, my;
unsigned char *start;
unsigned char *end;
int align;
int valign;
int b;
struct rgb bgcolor;
int group;
int colspan;
int rowspan;
int min_width;
int max_width;
int x_width;
int height;
int xpos, ypos, xw, yw;
int link_num;
unsigned char *tag;
};
struct table_column {
int group;
int align;
int valign;
int width;
};
struct table {
struct part *p;
int x, y;
int rx, ry;
int align;
int border, cellpd, vcellpd, cellsp;
int frame, rules, width, wf;
unsigned char *bordercolor;
int *min_c, *max_c;
int *w_c;
int rw;
int min_t, max_t;
struct table_cell *cells;
int c, rc;
struct table_column *cols;
int xc;
int *xcols;
int *r_heights;
int rh;
int link_num;
struct rgb bgcolor;
};
#define CELL(t, x, y) (&(t)->cells[(y) * (t)->rx + (x)])
static unsigned char frame_table[81] = {
0x00, 0xb3, 0xba, 0xc4, 0xc0, 0xd3, 0xcd, 0xd4, 0xc8,
0xc4, 0xd9, 0xbd, 0xc4, 0xc1, 0xd0, 0xcd, 0xd4, 0xc8,
0xcd, 0xbe, 0xbc, 0xcd, 0xbe, 0xbc, 0xcd, 0xcf, 0xca,
0xb3, 0xb3, 0xba, 0xda, 0xc3, 0xd3, 0xd5, 0xc6, 0xc8,
0xbf, 0xb4, 0xbd, 0xc2, 0xc5, 0xd0, 0xd5, 0xc6, 0xc8,
0xb8, 0xb5, 0xbc, 0xb8, 0xb5, 0xbc, 0xd1, 0xd8, 0xca,
0xba, 0xba, 0xba, 0xd6, 0xd6, 0xc7, 0xc9, 0xc9, 0xcc,
0xb7, 0xb7, 0xb6, 0xd2, 0xd2, 0xd7, 0xc9, 0xc9, 0xcc,
0xbb, 0xbb, 0xb9, 0xbb, 0xbb, 0xb9, 0xcb, 0xcb, 0xce,
};
static unsigned char hline_table[3] = { 0x20, 0xc4, 0xcd };
static unsigned char vline_table[3] = { 0x20, 0xb3, 0xba };
static struct table *
new_table(void)
{
struct table *t;
t = mem_calloc(sizeof(struct table));
t->p = NULL;
t->x = t->y = 0;
t->rx = INIT_X;
t->ry = INIT_Y;
t->cells = mem_calloc(INIT_X * INIT_Y * sizeof(struct table_cell));
t->c = 0;
t->rc = INIT_X;
t->cols = mem_calloc(INIT_X * sizeof(struct table_column));
t->xcols = NULL;
t->xc = 0;
t->r_heights = NULL;
return t;
}
static void
free_table(struct table *t)
{
int i, j;
for (j = 0; j < t->y; j++)
for (i = 0; i < t->x; i++) {
struct table_cell *c = CELL(t, i, j);
free(c->tag);
}
free(t->bordercolor);
free(t->min_c);
free(t->max_c);
free(t->w_c);
free(t->r_heights);
free(t->cols);
free(t->xcols);
free(t->cells);
free(t);
}
static void
expand_cells(struct table *t, int x, int y)
{
int i, j;
if (x >= t->x) {
if (t->x) {
for (i = 0; i < t->y; i++)
if (CELL(t, t->x - 1, i)->colspan == -1) {
for (j = t->x; j <= x; j++) {
CELL(t, j, i)->used = 1;
CELL(t, j, i)->spanned = 1;
CELL(t, j, i)->rowspan =
CELL(t, t->x - 1, i)
->rowspan;
CELL(t, j, i)->colspan = -1;
CELL(t, j, i)->mx =
CELL(t, t->x - 1, i)->mx;
CELL(t, j, i)->my =
CELL(t, t->x - 1, i)->my;
}
}
}
t->x = safe_add(x, 1);
}
if (y >= t->y) {
if (t->y) {
for (i = 0; i < t->x; i++)
if (CELL(t, i, t->y - 1)->rowspan == -1) {
for (j = t->y; j <= y; j++) {
CELL(t, i, j)->used = 1;
CELL(t, i, j)->spanned = 1;
CELL(t, i, j)->rowspan = -1;
CELL(t, i, j)->colspan =
CELL(t, i, t->y - 1)
->colspan;
CELL(t, i, j)->mx =
CELL(t, i, t->y - 1)->mx;
CELL(t, i, j)->my =
CELL(t, i, t->y - 1)->my;
}
}
}
t->y = safe_add(y, 1);
}
}
static struct table_cell *
new_cell(struct table *t, int x, int y)
{
struct table nt;
int i, j;
if (x < t->x && y < t->y)
goto ret;
rep:
if (x < t->rx && y < t->ry) {
expand_cells(t, x, y);
goto ret;
}
nt.rx = t->rx;
nt.ry = t->ry;
while (x >= nt.rx) {
if ((unsigned)nt.rx > INT_MAX / 2)
overalloc();
nt.rx *= 2;
}
while (y >= nt.ry) {
if ((unsigned)nt.ry > INT_MAX / 2)
overalloc();
nt.ry *= 2;
}
if ((unsigned)nt.rx * (unsigned)nt.ry / (unsigned)nt.rx
!= (unsigned)nt.ry)
overalloc();
if ((unsigned)nt.rx * (unsigned)nt.ry
> INT_MAX / sizeof(struct table_cell))
overalloc();
nt.cells = mem_calloc(nt.rx * nt.ry * sizeof(struct table_cell));
for (i = 0; i < t->x; i++)
for (j = 0; j < t->y; j++)
memcpy(CELL(&nt, i, j), CELL(t, i, j),
sizeof(struct table_cell));
free(t->cells);
t->cells = nt.cells;
t->rx = nt.rx;
t->ry = nt.ry;
goto rep;
ret:
return CELL(t, x, y);
}
static void
new_columns(struct table *t, int span, int width, int align, int valign,
int group)
{
if (safe_add(t->c, span) > t->rc) {
int n = t->rc;
struct table_column *nc;
while (t->c + span > n) {
if ((unsigned)n > INT_MAX / 2)
overalloc();
n *= 2;
}
if ((unsigned)n > INT_MAX / sizeof(struct table_column))
overalloc();
nc = xrealloc(t->cols, n * sizeof(struct table_column));
t->rc = n;
t->cols = nc;
}
while (span--) {
t->cols[t->c].align = align;
t->cols[t->c].valign = valign;
t->cols[t->c].width = width;
t->cols[t->c++].group = group;
group = 0;
}
}
static void
set_td_width(struct table *t, int x, int width, int f)
{
if (x >= t->xc) {
int n = t->xc ? t->xc : 1;
int i;
int *nc;
while (x >= n) {
if ((unsigned)n > INT_MAX / 2)
overalloc();
n *= 2;
}
if ((unsigned)n > INT_MAX / sizeof(int))
overalloc();
nc = xrealloc(t->xcols, n * sizeof(int));
for (i = t->xc; i < n; i++)
nc[i] = W_AUTO;
t->xc = n;
t->xcols = nc;
}
if (t->xcols[x] == W_AUTO || f) {
set:
t->xcols[x] = width;
return;
}
if (width == W_AUTO)
return;
if (width < 0 && t->xcols[x] >= 0)
goto set;
if (width >= 0 && t->xcols[x] < 0)
return;
t->xcols[x] = safe_add(t->xcols[x], width) / 2;
}
unsigned char *
skip_element(unsigned char *html, unsigned char *eof, unsigned char *what,
int sub)
{
int l = (int)strlen(cast_const_char what);
int level = 1;
unsigned char *name;
int namelen;
r:
while (html < eof && (*html != '<'))
rr:
html++;
if (eof - html >= 2 && (html[1] == '!' || html[1] == '?')) {
html = skip_comment(html, eof);
goto r;
}
if (html >= eof)
return eof;
if (parse_element(html, eof, &name, &namelen, NULL, &html))
goto rr;
if (namelen == l && !casecmp(name, what, l) && sub)
level = safe_add(level, 1);
if (namelen == l + 1 && name[0] == '/' && !casecmp(name + 1, what, l))
if (!--level)
return html;
goto r;
}
struct s_e {
unsigned char *s, *e;
};
static int
default_line_align(void)
{
return par_format.align == AL_NO || par_format.align == AL_NO_BREAKABLE
? par_format.align
: AL_LEFT;
}
static struct table *
parse_table(unsigned char *html, unsigned char *eof, unsigned char **end,
struct rgb *bgcolor, int sh, struct s_e **bad_html, int *bhp)
{
int qqq;
struct table *t;
struct table_cell *cell;
unsigned char *t_name, *t_attr, *en, *a;
int t_namelen;
int x = 0, y = -1;
int p = 0;
unsigned char *lbhp = NULL;
int l_al = default_line_align();
int l_val = VAL_MIDDLE;
int csp, rsp;
int group = 0;
int i, j, k;
struct rgb l_col;
int c_al = AL_TR, c_val = VAL_TR, c_width = W_AUTO, c_span = 0;
memcpy(&l_col, bgcolor, sizeof(struct rgb));
*end = html;
if (bad_html) {
*bad_html = NULL;
*bhp = 0;
}
t = new_table();
memcpy(&t->bgcolor, bgcolor, sizeof(struct rgb));
se:
en = html;
see:
html = en;
if (bad_html && !p && !lbhp) {
if (!(*bhp & (ALLOC_GR - 1))) {
if ((unsigned)*bhp
> INT_MAX / sizeof(struct s_e) - ALLOC_GR)
overalloc();
*bad_html = xrealloc(
*bad_html, (*bhp + ALLOC_GR) * sizeof(struct s_e));
}
lbhp = (*bad_html)[(*bhp)++].s = html;
}
while (html < eof && *html != '<')
html++;
if (html >= eof) {
if (p)
CELL(t, x, y)->end = html;
if (lbhp)
(*bad_html)[*bhp - 1].e = html;
goto scan_done;
}
if (eof - html >= 2 && (html[1] == '!' || html[1] == '?')) {
html = skip_comment(html, eof);
goto se;
}
if (parse_element(html, eof, &t_name, &t_namelen, &t_attr, &en)) {
html++;
goto se;
}
if (t_namelen == 5 && !casecmp(t_name, cast_uchar "TABLE", 5)) {
en = skip_element(en, eof, cast_uchar "TABLE", 1);
goto see;
}
if (t_namelen == 6 && !casecmp(t_name, cast_uchar "SCRIPT", 5)) {
if (should_skip_script(t_attr)) {
en = skip_element(en, eof, cast_uchar "SCRIPT", 0);
goto see;
}
}
if (t_namelen == 6 && !casecmp(t_name, cast_uchar "/TABLE", 6)) {
if (c_span)
new_columns(t, c_span, c_width, c_al, c_val, 1);
if (p)
CELL(t, x, y)->end = html;
if (lbhp)
(*bad_html)[*bhp - 1].e = html;
goto scan_done;
}
if (t_namelen == 8 && !casecmp(t_name, cast_uchar "COLGROUP", 8)) {
if (c_span)
new_columns(t, c_span, c_width, c_al, c_val, 1);
if (lbhp) {
(*bad_html)[*bhp - 1].e = html;
lbhp = NULL;
}
c_al = AL_TR;
c_val = VAL_TR;
c_width = W_AUTO;
get_align(t_attr, &c_al);
get_valign(t_attr, &c_val);
get_c_width(t_attr, &c_width, sh);
if ((c_span = get_num(t_attr, cast_uchar "span")) == -1)
c_span = 1;
goto see;
}
if (t_namelen == 9 && !casecmp(t_name, cast_uchar "/COLGROUP", 9)) {
if (c_span)
new_columns(t, c_span, c_width, c_al, c_val, 1);
if (lbhp) {
(*bad_html)[*bhp - 1].e = html;
lbhp = NULL;
}
c_span = 0;
c_al = AL_TR;
c_val = VAL_TR;
c_width = W_AUTO;
goto see;
}
if (t_namelen == 3 && !casecmp(t_name, cast_uchar "COL", 3)) {
int sp, wi, al, val;
if (lbhp) {
(*bad_html)[*bhp - 1].e = html;
lbhp = NULL;
}
if ((sp = get_num(t_attr, cast_uchar "span")) == -1)
sp = 1;
wi = c_width;
al = c_al;
val = c_val;
get_align(t_attr, &al);
get_valign(t_attr, &val);
get_c_width(t_attr, &wi, sh);
new_columns(t, sp, wi, al, val, !!c_span);
c_span = 0;
goto see;
}
if (t_namelen == 3
&& (!casecmp(t_name, cast_uchar "/TR", 3)
|| !casecmp(t_name, cast_uchar "/TD", 3)
|| !casecmp(t_name, cast_uchar "/TH", 3))) {
if (c_span)
new_columns(t, c_span, c_width, c_al, c_val, 1);
if (p) {
CELL(t, x, y)->end = html;
p = 0;
}
if (lbhp) {
(*bad_html)[*bhp - 1].e = html;
lbhp = NULL;
}
}
if (t_namelen == 2 && !casecmp(t_name, cast_uchar "TR", 2)) {
if (c_span)
new_columns(t, c_span, c_width, c_al, c_val, 1);
if (p) {
CELL(t, x, y)->end = html;
p = 0;
}
if (lbhp) {
(*bad_html)[*bhp - 1].e = html;
lbhp = NULL;
}
if (group)
group--;
l_al = default_line_align();
l_val = VAL_MIDDLE;
memcpy(&l_col, bgcolor, sizeof(struct rgb));
get_align(t_attr, &l_al);
get_valign(t_attr, &l_val);
get_bgcolor(t_attr, &l_col);
y++;
x = 0;
goto see;
}
if (t_namelen == 5
&& ((!casecmp(t_name, cast_uchar "THEAD", 5))
|| (!casecmp(t_name, cast_uchar "TBODY", 5))
|| (!casecmp(t_name, cast_uchar "TFOOT", 5)))) {
if (c_span)
new_columns(t, c_span, c_width, c_al, c_val, 1);
if (lbhp) {
(*bad_html)[*bhp - 1].e = html;
lbhp = NULL;
}
group = 2;
}
if (t_namelen != 2
|| (casecmp(t_name, cast_uchar "TD", 2)
&& casecmp(t_name, cast_uchar "TH", 2)))
goto see;
if (c_span)
new_columns(t, c_span, c_width, c_al, c_val, 1);
if (lbhp) {
(*bad_html)[*bhp - 1].e = html;
lbhp = NULL;
}
if (p) {
CELL(t, x, y)->end = html;
p = 0;
}
if (y == -1) {
y = 0;
x = 0;
}
nc:
if (!(cell = new_cell(t, x, y)))
goto see;
if (cell->used) {
if (cell->colspan == -1)
goto see;
x++;
goto nc;
}
cell->mx = x;
cell->my = y;
cell->used = 1;
cell->start = en;
p = 1;
cell->align = l_al;
cell->valign = l_val;
cell->b = 0;
#if 0
if (upcase(t_name[1]) == 'H') {
unsigned char *e = en;
while (e < eof && WHITECHAR(*e)) e++;
if (eof - e > 6 && !casecmp(e, cast_uchar "<TABLE", 6)) goto no_th; /* hack for www.root.cz */
cell->b = 1;
cell->align = AL_CENTER;
no_th:;
}
#endif
if (group == 1)
cell->group = 1;
if (x < t->c) {
if (t->cols[x].align != AL_TR)
cell->align = t->cols[x].align;
if (t->cols[x].valign != VAL_TR)
cell->valign = t->cols[x].valign;
}
memcpy(&cell->bgcolor, &l_col, sizeof(struct rgb));
get_align(t_attr, &cell->align);
get_valign(t_attr, &cell->valign);
get_bgcolor(t_attr, &cell->bgcolor);
if ((a = get_attr_val(t_attr, cast_uchar "id")))
cell->tag = a;
if ((a = get_attr_val(t_attr, cast_uchar "class"))) {
if (strstr(cast_const_char a, "blob-code-inner")
|| /* github hack */
!strcmp(cast_const_char a, "changelog")
|| !strcmp(cast_const_char a, "vc_file_line_text")
|| /* https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/opts.c?view=markup
*/
!strcmp(cast_const_char a, "FileContents-lineContents")
|| /* https://android.googlesource.com/ */
0) {
cell->align = !par_format.implicit_pre_wrap
? AL_NO
: AL_NO_BREAKABLE;
}
free(a);
}
if ((csp = get_num(t_attr, cast_uchar "colspan")) == -1)
csp = 1;
if (!csp)
csp = -1;
if ((rsp = get_num(t_attr, cast_uchar "rowspan")) == -1)
rsp = 1;
if (!rsp)
rsp = -1;
if (csp >= 0 && rsp >= 0 && csp * rsp > 100000) {
if (csp > 10)
csp = -1;
if (rsp > 10)
rsp = -1;
}
cell->colspan = csp;
cell->rowspan = rsp;
if (csp == 1) {
int w = W_AUTO;
get_c_width(t_attr, &w, sh);
if (w != W_AUTO)
set_td_width(t, x, w, 0);
}
qqq = t->x;
for (i = 1; csp != -1 ? i < csp : x + i < qqq; i++) {
struct table_cell *sc;
if (!(sc = new_cell(t, x + i, y)) || sc->used) {
csp = i;
for (k = 0; k < i; k++)
CELL(t, x + k, y)->colspan = csp;
break;
}
sc->used = sc->spanned = 1;
sc->rowspan = rsp;
sc->colspan = csp;
sc->mx = x;
sc->my = y;
}
qqq = t->y;
for (j = 1; rsp != -1 ? j < rsp : y + j < qqq; j++) {
for (k = 0; k < i; k++) {
struct table_cell *sc;
if (!(sc = new_cell(t, x + k, y + j)) || sc->used) {
int l, m;
if (sc->mx == x && sc->my == y)
continue;
for (l = 0; l < k; l++)
memset(CELL(t, x + l, y + j), 0,
sizeof(struct table_cell));
for (l = 0; l < i; l++)
for (m = 0; m < j; m++)
CELL(t, x + l, y + m)->rowspan =
j;
goto brk;
}
sc->used = sc->spanned = 1;
sc->rowspan = rsp;
sc->colspan = csp;
sc->mx = x;
sc->my = y;
}
}
brk:
goto see;
scan_done:
*end = html;
for (x = 0; x < t->x; x++)
for (y = 0; y < t->y; y++) {
struct table_cell *c = CELL(t, x, y);
if (!c->spanned) {
if (c->colspan == -1)
c->colspan = t->x - x;
if (c->rowspan == -1)
c->rowspan = t->y - y;
}
}
if ((unsigned)t->y > INT_MAX / sizeof(int))
overalloc();
t->r_heights = mem_calloc(t->y * sizeof(int));
for (x = 0; x < t->c; x++)
if (t->cols[x].width != W_AUTO)
set_td_width(t, x, t->cols[x].width, 1);
set_td_width(t, t->x, W_AUTO, 0);
return t;
}
static void
get_cell_width(struct table *t, struct table_cell *c, int w, int a, int *min,
int *max, int *n_links)
{
struct part *p;
if (min)
*min = -1;
if (max)
*max = -1;
if (n_links)
*n_links = c->link_num;
if (!(p = format_html_part(
c->start, c->end,
c->align == AL_NO || c->align == AL_NO_BREAKABLE ? c->align
: AL_LEFT,
t->cellpd, w, NULL, !!a, !!a, NULL, c->link_num)))
return;
if (min)
*min = p->x;
if (max)
*max = p->xmax;
if (n_links)
*n_links = p->link_num;
free(p);
}
#define g_c_w(cc) \
do { \
struct table_cell *c = cc; \
if (!c->start) \
continue; \
c->link_num = nl; \
get_cell_width(t, c, 0, 0, &c->min_width, &c->max_width, &nl); \
} while (0)
static void
get_cell_widths(struct table *t)
{
int nl = t->p->link_num;
int i, j;
if (!d_opt->table_order)
for (j = 0; j < t->y; j++)
for (i = 0; i < t->x; i++)
g_c_w(CELL(t, i, j));
else
for (i = 0; i < t->x; i++)
for (j = 0; j < t->y; j++)
g_c_w(CELL(t, i, j));
t->link_num = nl;
}
static void
dst_width(int *p, int n, int w, int *lim)
{
int i, s = 0, d, r;
for (i = 0; i < n; i++)
s = safe_add(s, p[i]);
if (s >= w)
return;
if (!n)
return;
again:
d = (w - s) / n;
r = (w - s) % n;
w = 0;
for (i = 0; i < n; i++) {
p[i] = safe_add(p[i], d + (i < r));
if (lim && p[i] > lim[i]) {
w = safe_add(w, p[i] - lim[i]);
p[i] = lim[i];
}
}
if (w) {
lim = NULL;
s = 0;
goto again;
}
}
static int
get_vline_width(struct table *t, int col)
{ /* return: -1 none, 0, space, 1 line, 2 double */
int w = 0;
if (!col)
return -1;
if (t->rules == R_COLS || t->rules == R_ALL)
w = t->cellsp;
else if (t->rules == R_GROUPS)
w = col < t->c && t->cols[col].group;
if (!w && t->cellpd)
w = -1;
return w;
}
static int
get_hline_width(struct table *t, int row)
{
int w = 0;
if (!row)
return -1;
if (t->rules == R_ROWS || t->rules == R_ALL) {
x:
if (t->cellsp || t->vcellpd)
return t->cellsp;
return -1;
} else if (t->rules == R_GROUPS) {
int q;
for (q = 0; q < t->x; q++)
if (CELL(t, q, row)->group)
goto x;
return t->vcellpd ? 0 : -1;
}
if (!w && !t->vcellpd)
w = -1;
return w;
}
static int
get_column_widths(struct table *t)
{
int i, j, s, ns;
if ((unsigned)t->x > INT_MAX / sizeof(int))
overalloc();
if (!t->min_c)
t->min_c = xmalloc(t->x * sizeof(int));
if (!t->max_c)
t->max_c = xmalloc(t->x * sizeof(int));
if (!t->w_c)
t->w_c = xmalloc(t->x * sizeof(int));
memset(t->min_c, 0, t->x * sizeof(int));
memset(t->max_c, 0, t->x * sizeof(int));
s = 1;
do {
ns = INT_MAX;
for (i = 0; i < t->x; i++)
for (j = 0; j < t->y; j++) {
struct table_cell *c = CELL(t, i, j);
if (c->spanned || !c->used)
continue;
if (c->colspan + i > t->x) {
/*internal("colspan out of table");
return -1;*/
continue;
}
if (c->colspan == s) {
int k, p = 0;
/*int pp = t->max_c[i];*/
int m = 0;
for (k = 1; k < s; k++) {
if (get_vline_width(t, i + k)
>= 0)
p = safe_add(p, 1);
}
dst_width(t->min_c + i, s,
c->min_width - p,
t->max_c + i);
dst_width(t->max_c + i, s,
c->max_width - p - m, NULL);
for (k = 0; k < s; k++)
if (t->min_c[i + k]
> t->max_c[i + k])
t->max_c[i + k] =
t->min_c[i + k];
} else if (c->colspan > s && c->colspan < ns)
ns = c->colspan;
}
} while ((s = ns) != INT_MAX);
return 0;
}
static void
get_table_width(struct table *t)
{
int i, vl;
int min = 0, max = 0;
for (i = 0; i < t->x; i++) {
vl = get_vline_width(t, i) >= 0;
min = safe_add(min, vl);
max = safe_add(max, vl);
min = safe_add(min, t->min_c[i]);
if (t->xcols[i] > t->max_c[i])
max = safe_add(max, t->xcols[i]);
max = safe_add(max, t->max_c[i]);
}
vl = (!!(t->frame & F_LHS) + !!(t->frame & F_RHS)) * !!t->border;
min = safe_add(min, vl);
max = safe_add(max, vl);
t->min_t = min;
t->max_t = max;
}
static void
distribute_widths(struct table *t, int width)
{
int i;
int d = width - t->min_t;
int om = 0;
unsigned char *u;
int *w, *mx;
int mmax_c = 0;
t->rw = 0;
if (!t->x)
return;
if (d < 0) {
/*internal("too small width %d, required %d", width,
* t->min_t);*/
return;
}
for (i = 0; i < t->x; i++)
if (t->max_c[i] > mmax_c)
mmax_c = t->max_c[i];
memcpy(t->w_c, t->min_c, t->x * sizeof(int));
t->rw = width;
if ((unsigned)t->x > INT_MAX / sizeof(int))
overalloc();
u = xmalloc(t->x);
w = xmalloc(t->x * sizeof(int));
mx = xmalloc(t->x * sizeof(int));
while (d) {
int mss, mii;
int p = 0;
int wq;
int dd;
memset(w, 0, t->x * sizeof(int));
memset(mx, 0, t->x * sizeof(int));
for (i = 0; i < t->x; i++) {
switch (om) {
case 0:
if (t->w_c[i] < t->xcols[i]) {
w[i] = 1;
mx[i] = (t->xcols[i] > t->max_c[i]
? t->max_c[i]
: t->xcols[i])
- t->w_c[i];
if (mx[i] <= 0)
w[i] = 0;
}
break;
case 1:
if (t->xcols[i] < -1 && t->xcols[i] != -2) {
w[i] = t->xcols[i] <= -2
? -2 - t->xcols[i]
: 1;
mx[i] = t->max_c[i] - t->w_c[i];
if (mx[i] <= 0)
w[i] = 0;
}
break;
case 2:
case 3:
if (t->w_c[i] < t->max_c[i]
&& (om == 3 || t->xcols[i] == W_AUTO)) {
mx[i] = t->max_c[i] - t->w_c[i];
if (mmax_c)
w[i] =
safe_add(5, t->max_c[i] * 10
/ mmax_c);
else