#!/usr/bin/env perl
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#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.haxx.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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###########################################################################
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# Yeah, I know, probably 1000 other persons already wrote a script like
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# this, but I'll tell ya:
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# THEY DON'T FIT ME :-)
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# Get readme file as parameter:
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if($ARGV[0] eq "-c") {
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$c=1;
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shift @ARGV;
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}
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push @out, " _ _ ____ _\n";
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push @out, " Project ___| | | | _ \\| |\n";
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push @out, " / __| | | | |_) | |\n";
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push @out, " | (__| |_| | _ <| |___\n";
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push @out, " \\___|\\___/|_| \\_\\_____|\n";
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my $olen=0;
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while (<STDIN>) {
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my $line = $_;
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# this should be removed:
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$line =~ s/(.|_)//g;
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# remove trailing CR from line. msysgit checks out files as line+CRLF
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$line =~ s/\r$//;
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if($line =~ /^([ \t]*\n|curl)/i) {
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# cut off headers and empty lines
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$wline++; # count number of cut off lines
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next;
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}
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my $text = $line;
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$text =~ s/^\s+//g; # cut off preceding...
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$text =~ s/\s+$//g; # and trailing whitespaces
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$tlen = length($text);
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if($wline && ($olen == $tlen)) {
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# if the previous line with contents was exactly as long as
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# this line, then we ignore the newlines!
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# We do this magic because a header may abort a paragraph at
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# any line, but we don't want that to be noticed in the output
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# here
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$wline=0;
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}
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$olen = $tlen;
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if($wline) {
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# we only make one empty line max
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$wline = 0;
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push @out, "\n";
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}
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push @out, $line;
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}
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push @out, "\n"; # just an extra newline
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print <<HEAD
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/*
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* NEVER EVER edit this manually, fix the mkhelp.pl script instead!
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*/
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#ifdef USE_MANUAL
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#include "tool_hugehelp.h"
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HEAD
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;
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if($c) {
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# If compression requested, check that the Gzip module is available
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# or else disable compression
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$c = eval
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{
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require IO::Compress::Gzip;
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IO::Compress::Gzip->import();
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1;
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};
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print STDERR "Warning: compression requested but Gzip is not available\n" if (!$c)
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}
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if($c)
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{
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my $content = join("", @out);
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my $gzippedContent;
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IO::Compress::Gzip::gzip(
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\$content, \$gzippedContent, Level => 9, TextFlag => 1, Time=>0) or die "gzip failed:";
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$gzip = length($content);
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$gzipped = length($gzippedContent);
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print <<HEAD
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#include <zlib.h>
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#include "memdebug.h" /* keep this as LAST include */
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static const unsigned char hugehelpgz[] = {
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/* This mumbo-jumbo is the huge help text compressed with gzip.
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Thanks to this operation, the size of this data shrank from $gzip
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to $gzipped bytes. You can disable the use of compressed help
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texts by NOT passing -c to the mkhelp.pl tool. */
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HEAD
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;
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my $c=0;
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print " ";
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for(split(//, $gzippedContent)) {
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my $num=ord($_);
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printf(" 0x%02x,", 0+$num);
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if(!(++$c % 12)) {
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print "\n ";
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}
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}
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print "\n};\n";
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print <<EOF
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#define BUF_SIZE 0x10000
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static voidpf zalloc_func(voidpf opaque, unsigned int items, unsigned int size)
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{
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(void) opaque;
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/* not a typo, keep it calloc() */
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return (voidpf) calloc(items, size);
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}
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static void zfree_func(voidpf opaque, voidpf ptr)
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{
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(void) opaque;
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free(ptr);
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}
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/* Decompress and send to stdout a gzip-compressed buffer */
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void hugehelp(void)
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{
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unsigned char* buf;
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int status,headerlen;
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z_stream z;
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/* Make sure no gzip options are set */
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if (hugehelpgz[3] & 0xfe)
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return;
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headerlen = 10;
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memset(&z, 0, sizeof(z_stream));
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z.zalloc = (alloc_func)zalloc_func;
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z.zfree = (free_func)zfree_func;
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z.avail_in = (unsigned int)(sizeof(hugehelpgz) - headerlen);
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z.next_in = (unsigned char *)hugehelpgz + headerlen;
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if (inflateInit2(&z, -MAX_WBITS) != Z_OK)
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return;
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buf = malloc(BUF_SIZE);
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if (buf) {
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while(1) {
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z.avail_out = BUF_SIZE;
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z.next_out = buf;
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status = inflate(&z, Z_SYNC_FLUSH);
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if (status == Z_OK || status == Z_STREAM_END) {
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fwrite(buf, BUF_SIZE - z.avail_out, 1, stdout);
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if (status == Z_STREAM_END)
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break;
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}
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else
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break; /* Error */
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}
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free(buf);
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}
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inflateEnd(&z);
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}
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EOF
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;
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foot();
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exit;
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}
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else {
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print <<HEAD
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void hugehelp(void)
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{
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fputs(
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HEAD
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;
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}
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$outsize=0;
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for(@out) {
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chop;
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$new = $_;
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$outsize += length($new)+1; # one for the newline
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$new =~ s/\\/\\\\/g;
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$new =~ s/\"/\\\"/g;
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# gcc 2.96 claims ISO C89 only is required to support 509 letter strings
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if($outsize > 500) {
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# terminate and make another fputs() call here
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print ", stdout);\n fputs(\n";
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$outsize=length($new)+1;
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}
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printf("\"%s\\n\"\n", $new);
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}
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print ", stdout) ;\n}\n";
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foot();
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sub foot {
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print <<FOOT
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#else /* !USE_MANUAL */
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/* built-in manual is disabled, blank function */
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#include "tool_hugehelp.h"
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void hugehelp(void) {}
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#endif /* USE_MANUAL */
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FOOT
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;
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}
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