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|
FF *
parse_format()
{
FF froot;
FF *flinebeg;
char *eol;
register FF *fprev = &froot;
register FF *fcmd;
register char *s;
register char *t;
register SV *sv;
bool noblank;
bool repeater;
Zero(&froot, 1, FF);
s = bufptr;
while (s < bufend || (rsfp && (s = sv_gets(linestr,rsfp, 0)) != Nullch)) {
curcop->cop_line++;
if (in_eval && !rsfp) {
eol = index(s,'\n');
if (!eol++)
eol = bufend;
}
else
eol = bufend = linestr->sv_ptr + linestr->sv_cur;
if (perldb) {
SV *tmpstr = NEWSV(89,0);
sv_setpvn(tmpstr, s, eol-s);
av_store(GvAV(curcop->cop_filegv), (int)curcop->cop_line,tmpstr);
}
if (*s == '.') {
/*SUPPRESS 530*/
for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
if (*t == '\n') {
bufptr = s;
return froot.ff_next;
}
}
if (*s == '#') {
s = eol;
continue;
}
flinebeg = Nullfield;
noblank = FALSE;
repeater = FALSE;
while (s < eol) {
Newz(804,fcmd,1,FF);
fprev->ff_next = fcmd;
fprev = fcmd;
for (t=s; t < eol && *t != '@' && *t != '^'; t++) {
if (*t == '~') {
noblank = TRUE;
*t = ' ';
if (t[1] == '~') {
repeater = TRUE;
t[1] = ' ';
}
}
}
fcmd->ff_pre = nsavestr(s, t-s);
fcmd->ff_presize = t-s;
s = t;
if (s >= eol) {
if (noblank)
fcmd->ff_flags |= FFf_NOBLANK;
if (repeater)
fcmd->ff_flags |= FFf_REPEAT;
break;
}
if (!flinebeg)
flinebeg = fcmd; /* start values here */
if (*s++ == '^')
fcmd->ff_flags |= FFf_CHOP; /* for doing text filling */
switch (*s) {
case '*':
fcmd->ff_type = FFt_LINES;
*s = '\0';
break;
case '<':
fcmd->ff_type = FFt_LEFT;
while (*s == '<')
s++;
break;
case '>':
fcmd->ff_type = FFt_RIGHT;
while (*s == '>')
s++;
break;
case '|':
fcmd->ff_type = FFt_CENTER;
while (*s == '|')
s++;
break;
case '#':
case '.':
/* Catch the special case @... and handle it as a string
field. */
if (*s == '.' && s[1] == '.') {
goto default_format;
}
fcmd->ff_type = FFt_DECIMAL;
{
char *p;
/* Read a run_format in the form @####.####, where either group
of ### may be empty, or the final .### may be missing. */
while (*s == '#')
s++;
if (*s == '.') {
s++;
p = s;
while (*s == '#')
s++;
fcmd->ff_decimals = s-p;
fcmd->ff_flags |= FFf_DP;
} else {
fcmd->ff_decimals = 0;
}
}
break;
default:
default_format:
fcmd->ff_type = FFt_LEFT;
break;
}
if (fcmd->ff_flags & FFf_CHOP && *s == '.') {
fcmd->ff_flags |= FFf_MORE;
while (*s == '.')
s++;
}
fcmd->ff_size = s-t;
}
if (flinebeg) {
again:
if (s >= bufend &&
(!rsfp || (s = sv_gets(linestr, rsfp, 0)) == Nullch) )
goto badform;
curcop->cop_line++;
if (in_eval && !rsfp) {
eol = index(s,'\n');
if (!eol++)
eol = bufend;
}
else
eol = bufend = linestr->sv_ptr + linestr->sv_cur;
if (perldb) {
SV *tmpstr = NEWSV(90,0);
sv_setpvn(tmpstr, s, eol-s);
av_store(GvAV(curcop->cop_filegv),
(int)curcop->cop_line,tmpstr);
}
if (strnEQ(s,".\n",2)) {
bufptr = s;
yyerror("Missing values line");
return froot.ff_next;
}
if (*s == '#') {
s = eol;
goto again;
}
sv = flinebeg->ff_unparsed = NEWSV(91,eol - s);
sv->sv_u.sv_hv = curstash;
sv_setpvn(sv,"(",1);
flinebeg->ff_line = curcop->cop_line;
eol[-1] = '\0';
if (!flinebeg->ff_next->ff_type || index(s, ',')) {
eol[-1] = '\n';
sv_catpvn(sv, s, eol - s - 1);
sv_catpvn(sv,",$$);",5);
s = eol;
}
else {
eol[-1] = '\n';
while (s < eol && isSPACE(*s))
s++;
t = s;
while (s < eol) {
switch (*s) {
case ' ': case '\t': case '\n': case ';':
sv_catpvn(sv, t, s - t);
sv_catpvn(sv, "," ,1);
while (s < eol && (isSPACE(*s) || *s == ';'))
s++;
t = s;
break;
case '$':
sv_catpvn(sv, t, s - t);
t = s;
s = scan_ident(s,eol,tokenbuf,FALSE);
sv_catpvn(sv, t, s - t);
t = s;
if (s < eol && *s && index("$'\"",*s))
sv_catpvn(sv, ",", 1);
break;
case '"': case '\'':
sv_catpvn(sv, t, s - t);
t = s;
s++;
while (s < eol && (*s != *t || s[-1] == '\\'))
s++;
if (s < eol)
s++;
sv_catpvn(sv, t, s - t);
t = s;
if (s < eol && *s && index("$'\"",*s))
sv_catpvn(sv, ",", 1);
break;
default:
yyerror("Please use commas to separate fields");
}
}
sv_catpvn(sv,"$$);",4);
}
}
}
badform:
bufptr = SvPV(linestr);
yyerror("Format not terminated");
return froot.ff_next;
}
|
