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|
#!/usr/bin/perl
$[ = 1; # set array base to 1
$, = ' '; # set output field separator
$\ = "\n"; # set output record separator
sub toupper {
local($_) = @_;
tr/a-z/A-Z/;
return $_;
}
sub tolower {
local($_) = @_;
tr/A-Z/a-z/;
return $_;
}
print '/* lib.c */';
print "/* This is a generated file. Please modify `lib.pl' */";
print '';
print '#include <config.h>';
print '';
print '#include <glibtop.h>';
print '#include <glibtop/error.h>';
print '#include <glibtop/open.h>';
print '';
print '#include <glibtop/sysdeps.h>';
print '#include <glibtop/union.h>';
print '#include <glib/gi18n-lib.h>';
print '';
print '#include <glibtop/command.h>';
print '';
print '/* Some required fields are missing. */';
print '';
print 'static void';
print '_glibtop_missing_feature (glibtop *server, const char *feature,';
print "\t\t\t const guint64 present, guint64 *required)";
print '{';
print "\tguint64 old_required = *required;\n";
print "\t/* Return if we have all required fields. */";
print "\tif ((~present & old_required) == 0)";
print "\t\treturn;\n";
print "\tswitch (server->error_method) {";
print "\tcase GLIBTOP_ERROR_METHOD_WARN_ONCE:";
print "\t\t*required &= present;";
print "\tcase GLIBTOP_ERROR_METHOD_WARN:";
print "\t\tglibtop_warn_r (server,";
print "\t\t\t\t_(\"glibtop_get_%s (): Client requested \"";
print "\t\t\t\t \"field mask %05lx, but only have %05lx.\"),";
print "\t\t\t\t feature, (unsigned long) old_required,";
print "\t\t\t\t (unsigned long) present);";
print "\t\tbreak;";
print "\tcase GLIBTOP_ERROR_METHOD_ABORT:";
print "\t\tglibtop_error_r (server,";
print "\t\t\t\t _(\"glibtop_get_%s (): Client requested \"";
print "\t\t\t\t \"field mask %05lx, but only have %05lx.\"),";
print "\t\t\t\t feature, (unsigned long) old_required,";
print "\t\t\t\t (unsigned long) present);";
print "\t\tbreak;";
print "\t}";
print '}';
print '';
print '/* Library functions. */';
print '';
$convert{'long'} = 'gint64';
$convert{'ulong'} = 'guint64';
$convert{'pid_t'} = 'pid_t';
$convert{'int'} = 'int';
$convert{'ushort'} = 'unsigned short';
$convert{'unsigned'} = 'unsigned';
while (<>) {
chop; # strip record separator
if (/^[^#]/) {
&output($_);
}
}
sub output {
local($line) = @_;
@line_fields = split(/\|/, $line, 9999);
$retval = $line_fields[1];
$feature = $line_fields[2];
$param_def = $line_fields[4];
$orig = $feature;
$feature =~ s/^@//;
$space = $feature;
$space =~ s/./ /g;
print $retval;
if ($retval !~ /^void$/) {
$prefix = 'retval = ';
$prefix_space = ' ';
}
else {
$prefix = '';
$prefix_space = '';
}
if ($param_def eq 'string') {
$call_param = ', ' . $line_fields[5];
$param_buf = '';
$buf_set = '';
$param_decl = ",\n " . $space . ' const char *' .
$line_fields[5];
$send_ptr = "\n\tconst void *send_ptr = " . $line_fields[5] . ';';
$send_size = "\n\tconst size_t send_size =\n\t\tstrlen (" .
$line_fields[5] . ') + 1;';
}
else {
$call_param = '';
$param_decl = '';
$send_size = '';
$send_ptr = '';
$param_buf = '';
$buf_set = '';
$nr_params = (@params = split(/:/, $param_def, 9999));
if ($nr_params) {
$param_buf = "\n\tstruct {\n";
}
for ($param = 1; $param <= $nr_params; $param++) {
$list = $params[$param];
$type = $params[$param];
$type =~ s/\(.*//;
$list =~ s/^.*\(//;
$list =~ s/\)$//;
$count = (@fields = split(/,/, $list, 9999));
if ($count > 0) {
for ($field = 1; $field <= $count; $field++) {
$param_buf .= "\t\t$convert{$type} buf_$fields[$field];\n";
$buf_set .= "\tparam_buf.buf_$fields[$field] = $fields[$field];\n";
}
}
for ($field = 1; $field <= $count; $field++) {
if ($param_decl eq '') {
$param_decl = ",\n " . $space . ' ';
}
else {
$param_decl = $param_decl . ', ';
}
$param_decl = $param_decl . '' . $convert{$type} . ' ' .
$fields[$field];
$call_param = $call_param . ', ' . $fields[$field];
if ($send_ptr eq '') {
$send_ptr = "\n\tconst void *send_ptr = ¶m_buf;";
}
}
}
if ($nr_params) {
$param_buf .= "\t} param_buf;";
$send_size = "\n\tconst size_t send_size = sizeof param_buf;";
}
else {
$send_size = "\n\tconst size_t send_size = 0;";
}
if ($send_ptr eq '') {
$send_ptr = "\n\tconst void *send_ptr = NULL;";
}
}
print 'glibtop_get_' . $feature . '_l (glibtop *server, glibtop_' .
$feature . ' *buf' . $param_decl . ')';
print "{" . $param_buf;
print $send_ptr . '' . $send_size;
if ($retval !~ /^void$/) {
print "\t" . $retval . ' retval = (' . $retval . ') 0;';
}
print $buf_set;
print "\tglibtop_init_r (&server, (1 << GLIBTOP_SYSDEPS_" .
&toupper($feature) . '), 0);';
print '';
print "\t/* If neccessary, we ask the server for the requested";
print "\t * feature. If not, we call the sysdeps function. */";
print '';
print "\tif ((server->flags & _GLIBTOP_INIT_STATE_SERVER) &&";
print "\t (server->features & (1 << GLIBTOP_SYSDEPS_" .
&toupper($feature) . ')))';
print "\t{";
print "\t\t" . $prefix . 'glibtop_call_l (server, GLIBTOP_CMND_' .
&toupper($feature) . ',';
print "\t\t\t\t" . $prefix_space . 'send_size, send_ptr,';
print "\t\t\t\t" . $prefix_space . 'sizeof (glibtop_' . $feature .
'), buf);';
print "\t} else {";
if ($orig !~ /^@/) {
print '#if (!GLIBTOP_SUID_' . &toupper($feature) . ')';
}
print "\t\t" . $prefix . 'glibtop_get_' . $feature . '_s (server, buf' .
$call_param . ');';
if ($orig !~ /^@/) {
print '#else';
print "\t\terrno = ENOSYS;";
print "\t\tglibtop_error_io_r (server, \"glibtop_get_" . $feature .
"\");";
print '#endif';
}
print "\t}";
print '';
print "\t/* Make sure that all required fields are present. */";
print '';
print "\tif (buf->flags & server->required." . $feature . ')';
print "\t\t_glibtop_missing_feature (server, \"" . $feature .
"\", buf->flags,";
print "\t\t\t\t\t &server->required." . $feature . ');';
if ($retval !~ /^void$/) {
print "\n\t/* Now we can return. */";
print "\n\treturn retval;";
}
print '}';
print '';
}
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