ref: 3b7e03a30ed29ee0666c00568bf67b8179c28d12
dir: /sys/src/cmd/tbl/t4.c/
/* t4.c: read table specification */
# include "t.h"
int oncol;
void
getspec(void)
{
int icol, i;
qcol = findcol() + 1;/* must allow one extra for line at right */
garray(qcol);
sep[-1] = -1;
for (icol = 0; icol < qcol; icol++) {
sep[icol] = -1;
evenup[icol] = 0;
cll[icol][0] = 0;
for (i = 0; i < MAXHEAD; i++) {
csize[icol][i][0] = 0;
vsize[icol][i][0] = 0;
font[icol][i][0] = lefline[icol][i] = 0;
flags[icol][i] = 0;
style[icol][i] = 'l';
}
}
for (i = 0; i < MAXHEAD; i++)
lefline[qcol][i] = 0; /* fixes sample55 looping */
nclin = ncol = 0;
oncol = 0;
left1flg = rightl = 0;
readspec();
Bprint(&tabout, ".rm");
for (i = 0; i < ncol; i++)
Bprint(&tabout, " %2s", reg(i, CRIGHT));
Bprint(&tabout, "\n");
}
void
readspec(void)
{
int icol, c, sawchar, stopc, i;
char sn[10], *snp, *temp;
sawchar = icol = 0;
while (c = get1char()) {
switch (c) {
default:
if (c != tab) {
char buf[64];
sprint(buf, "bad table specification character %c", c);
error(buf);
}
case ' ': /* note this is also case tab */
continue;
case '\n':
if (sawchar == 0)
continue;
case ',':
case '.': /* end of table specification */
ncol = max(ncol, icol);
if (lefline[ncol][nclin] > 0) {
ncol++;
rightl++;
};
if (sawchar)
nclin++;
if (nclin >= MAXHEAD)
error("too many lines in specification");
icol = 0;
if (ncol == 0 || nclin == 0)
error("no specification");
if (c == '.') {
while ((c = get1char()) && c != '\n')
if (c != ' ' && c != '\t')
error("dot not last character on format line");
/* fix up sep - default is 3 except at edge */
for (icol = 0; icol < ncol; icol++)
if (sep[icol] < 0)
sep[icol] = icol + 1 < ncol ? 3 : 2;
if (oncol == 0)
oncol = ncol;
else if (oncol + 2 < ncol)
error("tried to widen table in T&, not allowed");
return;
}
sawchar = 0;
continue;
case 'C':
case 'S':
case 'R':
case 'N':
case 'L':
case 'A':
c += ('a' - 'A');
case '_':
if (c == '_')
c = '-';
case '=':
case '-':
case '^':
case 'c':
case 's':
case 'n':
case 'r':
case 'l':
case 'a':
style[icol][nclin] = c;
if (c == 's' && icol <= 0)
error("first column can not be S-type");
if (c == 's' && style[icol-1][nclin] == 'a') {
Bprint(&tabout, ".tm warning: can't span a-type cols, changed to l\n");
style[icol-1][nclin] = 'l';
}
if (c == 's' && style[icol-1][nclin] == 'n') {
Bprint(&tabout, ".tm warning: can't span n-type cols, changed to c\n");
style[icol-1][nclin] = 'c';
}
icol++;
if (c == '^' && nclin <= 0)
error("first row can not contain vertical span");
if (icol > qcol)
error("too many columns in table");
sawchar = 1;
continue;
case 'b':
case 'i':
c += 'A' - 'a';
case 'B':
case 'I':
if (icol == 0)
continue;
snp = font[icol-1][nclin];
snp[0] = (c == 'I' ? '2' : '3');
snp[1] = 0;
continue;
case 't':
case 'T':
if (icol > 0)
flags[icol-1][nclin] |= CTOP;
continue;
case 'd':
case 'D':
if (icol > 0)
flags[icol-1][nclin] |= CDOWN;
continue;
case 'f':
case 'F':
if (icol == 0)
continue;
snp = font[icol-1][nclin];
snp[0] = snp[1] = stopc = 0;
for (i = 0; i < 2; i++) {
c = get1char();
if (i == 0 && c == '(') {
stopc = ')';
c = get1char();
}
if (c == 0)
break;
if (c == stopc) {
stopc = 0;
break;
}
if (stopc == 0)
if (c == ' ' || c == tab )
break;
if (c == '\n' || c == '|') {
un1getc(c);
break;
}
snp[i] = c;
if (c >= '0' && c <= '9')
break;
}
if (stopc)
if (get1char() != stopc)
error("Nonterminated font name");
continue;
case 'P':
case 'p':
if (icol <= 0)
continue;
temp = snp = csize[icol-1][nclin];
while (c = get1char()) {
if (c == ' ' || c == tab || c == '\n')
break;
if (c == '-' || c == '+')
if (snp > temp)
break;
else
*snp++ = c;
else if (digit(c))
*snp++ = c;
else
break;
if (snp - temp > 4)
error("point size too large");
}
*snp = 0;
if (atoi(temp) > 36)
error("point size unreasonable");
un1getc (c);
continue;
case 'V':
case 'v':
if (icol <= 0)
continue;
temp = snp = vsize[icol-1][nclin];
while (c = get1char()) {
if (c == ' ' || c == tab || c == '\n')
break;
if (c == '-' || c == '+')
if (snp > temp)
break;
else
*snp++ = c;
else if (digit(c))
*snp++ = c;
else
break;
if (snp - temp > 4)
error("vertical spacing value too large");
}
*snp = 0;
un1getc(c);
continue;
case 'w':
case 'W':
snp = cll [icol-1];
/* Dale Smith didn't like this check - possible to have two text blocks
of different widths now ....
if (*snp)
{
Bprint(&tabout, "Ignored second width specification");
continue;
}
/* end commented out code ... */
stopc = 0;
while (c = get1char()) {
if (snp == cll[icol-1] && c == '(') {
stopc = ')';
continue;
}
if ( !stopc && (c > '9' || c < '0'))
break;
if (stopc && c == stopc)
break;
*snp++ = c;
}
*snp = 0;
if (snp - cll[icol-1] > CLLEN)
error ("column width too long");
if (!stopc)
un1getc(c);
continue;
case 'e':
case 'E':
if (icol < 1)
continue;
evenup[icol-1] = 1;
evenflg = 1;
continue;
case 'z':
case 'Z': /* zero width-ignre width this item */
if (icol < 1)
continue;
flags[icol-1][nclin] |= ZEROW;
continue;
case 'u':
case 'U': /* half line up */
if (icol < 1)
continue;
flags[icol-1][nclin] |= HALFUP;
continue;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
sn[0] = c;
snp = sn + 1;
while (digit(*snp++ = c = get1char()))
;
un1getc(c);
sep[icol-1] = max(sep[icol-1], numb(sn));
continue;
case '|':
lefline[icol][nclin]++;
if (icol == 0)
left1flg = 1;
continue;
}
}
error("EOF reading table specification");
}
int
findcol(void)
{
# define FLNLIM 200
/* this counts the number of columns and then puts the line back*/
char *s, line[FLNLIM+2], *p;
int c, n = 0, inpar = 0;
while ((c = get1char()) != 0 && c == ' ')
;
if (c != '\n')
un1getc(c);
for (s = line; *s = c = get1char(); s++) {
if (c == ')')
inpar = 0;
if (inpar)
continue;
if (c == '\n' || c == 0 || c == '.' || c == ',')
break;
else if (c == '(')
inpar = 1;
else if (s >= line + FLNLIM)
error("too long spec line");
}
for (p = line; p < s; p++)
switch (*p) {
case 'l':
case 'r':
case 'c':
case 'n':
case 'a':
case 's':
case 'L':
case 'R':
case 'C':
case 'N':
case 'A':
case 'S':
case '-':
case '=':
case '_':
n++;
}
while (p >= line)
un1getc(*p--);
return(n);
}
void
garray(int qcol)
{
style = (int (*)[]) getcore(MAXHEAD * qcol, sizeof(int));
evenup = (int *) getcore(qcol, sizeof(int));
lefline = (int (*)[]) getcore(MAXHEAD * (qcol + 1), sizeof (int)); /*+1 for sample55 loop - others may need it too*/
font = (char (*)[][2]) getcore(MAXHEAD * qcol, 2);
csize = (char (*)[MAXHEAD][4]) getcore(MAXHEAD * qcol, 4);
vsize = (char (*)[MAXHEAD][4]) getcore(MAXHEAD * qcol, 4);
flags = (int (*)[]) getcore(MAXHEAD * qcol, sizeof(int));
cll = (char (*)[])getcore(qcol, CLLEN);
sep = (int *) getcore(qcol + 1, sizeof(int));
sep++; /* sep[-1] must be legal */
used = (int *) getcore(qcol + 1, sizeof(int));
lused = (int *) getcore(qcol + 1, sizeof(int));
rused = (int *) getcore(qcol + 1, sizeof(int));
doubled = (int *) getcore(qcol + 1, sizeof(int));
acase = (int *) getcore(qcol + 1, sizeof(int));
topat = (int *) getcore(qcol + 1, sizeof(int));
}
char *
getcore(int a, int b)
{
char *x;
x = calloc(a, b);
if (x == 0)
error("Couldn't get memory");
return(x);
}
void
freearr(void)
{
free(style);
free(evenup);
free(lefline);
free(flags);
free(font);
free(csize);
free(vsize);
free(cll);
free(--sep); /* netnews says this should be --sep because incremented earlier! */
free(used);
free(lused);
free(rused);
free(doubled);
free(acase);
free(topat);
}