Based on Dan Fandrich's patch and gzip unpack function, we now compress

the 'hugehelp' text if libz and gzip are available at build time.

Based on Dan Fandrich's patch and gzip unpack function, we now compress
9c7703ac · Daniel Stenberg · 4a8155b5 · 9c7703ac · 9c7703ac
Commit 9c7703ac authored 21 years ago by Daniel Stenberg
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -11,6 +11,14 @@ INCLUDES = -I$(top_srcdir)/include -I$(top_builddir)/src -I$(top_srcdir)/src

 bin_PROGRAMS = curl #memtest

+if HAVE_LIBZ
+# libz available, attempt to compress the help data
+MKHELPOPT=-c
+else
+# no libz, don't try to compress
+MKHELPOPT=
+endif
+
 #memtest_SOURCES = memtest.c
 #memtest_LDADD = $(top_srcdir)/lib/libcurl.la

@@ -38,4 +46,4 @@ MKHELP=$(top_srcdir)/src/mkhelp.pl
 # This generates the hugehelp.c file
 hugehelp.c: $(README) $(MANPAGE)  mkhelp.pl
 	rm -f hugehelp.c
-	$(NROFF) -man $(MANPAGE) | $(PERL) $(MKHELP)  $(README) > hugehelp.c
+	$(NROFF) -man $(MANPAGE) | $(PERL) -s $(MKHELP) $(MKHELPOPT) $(README) > hugehelp.c
--- a/src/mkhelp.pl
+++ b/src/mkhelp.pl
@@ -6,10 +6,10 @@
 # THEY DON'T FIT ME :-)

 # Get readme file as parameter:
-$README = $ARGV[0];
+my $README = $ARGV[0];

 if($README eq "") {
-    print "usage: mkreadme.pl <README>\n";
+    print "usage: mkreadme.pl [-c] <README> < manpage\n";
    exit;
 }

@@ -20,8 +20,8 @@ push @out, "                             / __| | | | |_) | |    \n";
 push @out, "                            | (__| |_| |  _ <| |___ \n";
 push @out, "                             \\___|\\___/|_| \\_\\_____|\n";

-$head=0;
-loop:
+my $head=0;
+
 while (<STDIN>) {
    $line = $_;

@@ -34,13 +34,13 @@ while (<STDIN>) {
    if($line =~ /^curl/i) {
 	# cut off the page headers
        $head=1;
-	next loop;
+	next;
    } 

    if($line =~ /^[ \t]*\n/) {
 	$wline++;
 	# we only make one empty line max
-	next loop;
+	next;
    }
    if($wline) {
 	$wline = 0;
@@ -54,20 +54,113 @@ while (<STDIN>) {
 push @out, "\n"; # just an extra newline

 open(READ, "<$README") ||
-    die "couldn't read the README infile";
+    die "couldn't read the README infile $README";

 while(<READ>) {
    push @out, $_;
 }
 close(READ);

+# if compressed
+if($c) {
+    my @test = `gzip --version 2>&1`;
+    if($test[0] =~ /gzip/) {
+        open(GZIP, "|gzip -9 >dumpit.gz");
+        binmode GZIP;
+        for(@out) {
+            print GZIP $_;
+            $gzip += length($_);
+        }
+        close(GZIP);
+        
+        open(GZIP, "<dumpit.gz");
+        binmode GZIP;
+        while(<GZIP>) {
+            push @gzip, $_;
+            $gzipped += length($_);
+        }
+        close(GZIP);
+    }
+    else {
+        # no gzip, no compression!
+        undef $c;
+        print STDERR "MEEEP: Couldn't find gzip, disable compression\n";
+    }
+}

-print "/* NEVER EVER edit this manually, fix the mkhelp script instead! */\n"
-;
-print "#include <stdio.h>\n";
-print "void hugehelp(void)\n";
-print "{\n";
-print " fputs (\n";
+$now = localtime;
+print <<HEAD
+/*
+ * NEVER EVER edit this manually, fix the mkhelp.pl script instead!
+ * Generation time: $now
+ */
+#include <stdio.h>
+HEAD
+    ;
+if($c) {
+    print "/* gzip shrunk this data from $gzip to $gzipped bytes */\n",
+    "#include <zlib.h>\nstatic const unsigned char hugehelpgz[] = {\n  ";
+    my $c=0;
+    for(@gzip) {
+        my @all=split(//, $_);
+        for(@all) {
+            my $num=ord($_);
+            printf("0x%02x, ", 0+$num);
+            if(++$c>11) {
+                print "\n  ";
+                $c=0;
+            }
+        }
+    }
+    print "\n};\n";
+
+    print <<EOF
+/* Decompress and send to stdout a gzip-compressed buffer */
+void hugehelp(void)
+{
+  unsigned char buf[0x10000];
+  int status,headerlen;
+  z_stream z;
+
+  /* Make sure no gzip options are set */
+  if (hugehelpgz[3] & 0xfe)
+    return;
+
+  headerlen = 10;
+  z.avail_in = sizeof(hugehelpgz) - headerlen;
+  z.next_in = (unsigned char *)hugehelpgz + headerlen;
+  z.zalloc = (alloc_func)Z_NULL;
+  z.zfree = (free_func)Z_NULL;
+  z.opaque = 0;
+
+  if (inflateInit2(&z, -MAX_WBITS) != Z_OK)
+    return;
+
+  for (;;) {
+    z.avail_out = (int)sizeof(buf);
+    z.next_out = buf;
+    status = inflate(&z, Z_SYNC_FLUSH);
+    if (status == Z_OK || status == Z_STREAM_END) {
+      fwrite(buf, sizeof(buf) - z.avail_out, 1, stdout);
+      if (status == Z_STREAM_END)
+         break;
+    } else
+      break;    /* Error */
+  }
+  inflateEnd(&z);
+}
+EOF
+    ;
+exit;
+}
+else {
+    print <<HEAD
+void hugehelp(void)
+{
+   fputs(
+HEAD
+         ;
+}

 $outsize=0;
 for(@out) {