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Merging upstream version 1.8.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-24 05:58:06 +01:00
parent 482a36ad54
commit 0b238fdfef
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
34 changed files with 858 additions and 455 deletions
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147
zcat.cc
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@ -1,5 +1,5 @@
/* Zcat - decompress and concatenate files to standard output
Copyright (C) 2010-2018 Antonio Diaz Diaz.
Copyright (C) 2010-2019 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -93,36 +93,39 @@ void show_help()
std::printf( "Zcat copies each given file to standard output. If any given file is\n"
"compressed, its decompressed content is used. If a given file does not\n"
"exist, and its name does not end with one of the known extensions, zcat\n"
"tries the compressed file names corresponding to the supported formats.\n"
"\nIf no files are specified, or if a file is specified as '-', data are\n"
"read from standard input, decompressed if needed, and sent to standard\n"
"output. Data read from standard input must be of the same type; all\n"
"uncompressed or all in the same compression format.\n"
"\nThe supported formats are bzip2, gzip, lzip and xz.\n"
"tries the compressed file names corresponding to the formats supported.\n"
"\nIf a file is specified as '-', data are read from standard input,\n"
"decompressed if needed, and sent to standard output. Data read from\n"
"standard input must be of the same type; all uncompressed or all in the\n"
"same compression format.\n"
"\nIf no files are specified, recursive searches examine the current\n"
"working directory, and nonrecursive searches read standard input.\n"
"\nThe formats supported are bzip2, gzip, lzip and xz.\n"
"\nUsage: zcat [options] [files]\n"
"\nExit status is 0 if no errors occurred, non-zero otherwise.\n"
"\nOptions:\n"
" -h, --help display this help and exit\n"
" -V, --version output version information and exit\n"
" -A, --show-all equivalent to '-vET'\n"
" -b, --number-nonblank number nonblank output lines\n"
" -e equivalent to '-vE'\n"
" -E, --show-ends display '$' at end of each line\n"
" -M, --format=<list> process only the formats in <list>\n"
" -n, --number number all output lines\n"
" -N, --no-rcfile don't read runtime configuration file\n"
" -O, --force-format=<fmt> force given format (bz2, gz, lz, xz)\n"
" -q, --quiet suppress all messages\n"
" -r, --recursive operate recursively on directories\n"
" -s, --squeeze-blank never more than one single blank line\n"
" -t equivalent to '-vT'\n"
" -T, --show-tabs display TAB characters as '^I'\n"
" -v, --show-nonprinting use '^' and 'M-' notation, except for LF and TAB\n"
" --verbose verbose mode (show error messages)\n"
" --bz2=<command> set compressor and options for bzip2 format\n"
" --gz=<command> set compressor and options for gzip format\n"
" --lz=<command> set compressor and options for lzip format\n"
" --xz=<command> set compressor and options for xz format\n" );
" -h, --help display this help and exit\n"
" -V, --version output version information and exit\n"
" -A, --show-all equivalent to '-vET'\n"
" -b, --number-nonblank number nonblank output lines\n"
" -e equivalent to '-vE'\n"
" -E, --show-ends display '$' at end of each line\n"
" -M, --format=<list> process only the formats in <list>\n"
" -n, --number number all output lines\n"
" -N, --no-rcfile don't read runtime configuration file\n"
" -O, --force-format=<fmt> force given format (bz2, gz, lz, xz)\n"
" -q, --quiet suppress all messages\n"
" -r, --recursive operate recursively on directories\n"
" -R, --dereference-recursive recursively follow symbolic links\n"
" -s, --squeeze-blank never more than one single blank line\n"
" -t equivalent to '-vT'\n"
" -T, --show-tabs display TAB characters as '^I'\n"
" -v, --show-nonprinting use '^' and 'M-' notation, except for LF and TAB\n"
" --verbose verbose mode (show error messages)\n"
" --bz2=<command> set compressor and options for bzip2 format\n"
" --gz=<command> set compressor and options for gzip format\n"
" --lz=<command> set compressor and options for lzip format\n"
" --xz=<command> set compressor and options for xz format\n" );
show_help_addr();
}
@ -153,7 +156,7 @@ int do_cat( const int infd, const int buffer_size,
rd = readblock( infd, inbuf, buffer_size );
if( rd != buffer_size && errno )
{
show_error2( "Error reading file", input_filename.c_str() );
show_file_error( input_filename.c_str(), "Read error", errno );
return 1;
}
if( rd == 0 )
@ -226,11 +229,13 @@ int do_cat( const int infd, const int buffer_size,
int cat( int infd, const int format_index, const std::string & input_filename,
const Cat_options & cat_options )
{
enum { buffer_size = 4096 };
// buffer with space for sentinel newline at the end
enum { buffer_size = 4096, outbuf_size = (5 * buffer_size) + 256 + 1 };
// buffer with space for sentinel newline at the end
uint8_t * const inbuf = new uint8_t[buffer_size+1];
// buffer with space for character quoting and 255-digit line number
uint8_t * const outbuf = new uint8_t[(4*buffer_size)+256];
// buffer with space for character quoting, 255-digit line number,
// worst case flushing respect to inbuf, and a canary byte.
uint8_t * const outbuf = new uint8_t[outbuf_size];
outbuf[outbuf_size-1] = 0;
int retval = 0;
Children children;
if( !set_data_feeder( input_filename, &infd, children, format_index ) )
@ -243,6 +248,8 @@ int cat( int infd, const int format_index, const std::string & input_filename,
if( retval == 0 && close( infd ) != 0 )
{ show_close_error(); retval = 1; }
if( outbuf[outbuf_size-1] != 0 )
internal_error( "buffer overflow." );
delete[] outbuf; delete[] inbuf;
return retval;
}
@ -253,10 +260,8 @@ int cat( int infd, const int format_index, const std::string & input_filename,
int main( const int argc, const char * const argv[] )
{
enum { verbose_opt = 256, bz2_opt, gz_opt, lz_opt, xz_opt };
int infd = -1;
int format_index = -1;
bool recursive = false;
std::string input_filename;
int recursive = 0; // 1 = '-r', 2 = '-R'
std::list< std::string > filenames;
Cat_options cat_options;
invocation_name = argv[0];
@ -264,33 +269,34 @@ int main( const int argc, const char * const argv[] )
const Arg_parser::Option options[] =
{
{ 'A', "show-all", Arg_parser::no }, // cat
{ 'b', "number-nonblank", Arg_parser::no }, // cat
{ 'c', "stdout", Arg_parser::no }, // gzip
{ 'd', "decompress", Arg_parser::no }, // gzip
{ 'e', 0, Arg_parser::no }, // cat
{ 'E', "show-ends", Arg_parser::no }, // cat
{ 'f', "force", Arg_parser::no }, // gzip
{ 'h', "help", Arg_parser::no },
{ 'l', "list", Arg_parser::no }, // gzip
{ 'L', "license", Arg_parser::no }, // gzip
{ 'M', "format", Arg_parser::yes },
{ 'n', "number", Arg_parser::no }, // cat
{ 'N', "no-rcfile", Arg_parser::no },
{ 'O', "force-format", Arg_parser::yes },
{ 'q', "quiet", Arg_parser::no },
{ 'r', "recursive", Arg_parser::no },
{ 's', "squeeze-blank", Arg_parser::no }, // cat
{ 't', 0, Arg_parser::no }, // cat
{ 'T', "show-tabs", Arg_parser::no }, // cat
{ 'v', "show-nonprinting", Arg_parser::no }, // cat
{ 'V', "version", Arg_parser::no },
{ verbose_opt, "verbose", Arg_parser::no },
{ bz2_opt, "bz2", Arg_parser::yes },
{ gz_opt, "gz", Arg_parser::yes },
{ lz_opt, "lz", Arg_parser::yes },
{ xz_opt, "xz", Arg_parser::yes },
{ 0 , 0, Arg_parser::no } };
{ 'A', "show-all", Arg_parser::no }, // cat
{ 'b', "number-nonblank", Arg_parser::no }, // cat
{ 'c', "stdout", Arg_parser::no }, // gzip
{ 'd', "decompress", Arg_parser::no }, // gzip
{ 'e', 0, Arg_parser::no }, // cat
{ 'E', "show-ends", Arg_parser::no }, // cat
{ 'f', "force", Arg_parser::no }, // gzip
{ 'h', "help", Arg_parser::no },
{ 'l', "list", Arg_parser::no }, // gzip
{ 'L', "license", Arg_parser::no }, // gzip
{ 'M', "format", Arg_parser::yes },
{ 'n', "number", Arg_parser::no }, // cat
{ 'N', "no-rcfile", Arg_parser::no },
{ 'O', "force-format", Arg_parser::yes },
{ 'q', "quiet", Arg_parser::no },
{ 'r', "recursive", Arg_parser::no },
{ 'R', "dereference-recursive", Arg_parser::no },
{ 's', "squeeze-blank", Arg_parser::no }, // cat
{ 't', 0, Arg_parser::no }, // cat
{ 'T', "show-tabs", Arg_parser::no }, // cat
{ 'v', "show-nonprinting", Arg_parser::no }, // cat
{ 'V', "version", Arg_parser::no },
{ verbose_opt, "verbose", Arg_parser::no },
{ bz2_opt, "bz2", Arg_parser::yes },
{ gz_opt, "gz", Arg_parser::yes },
{ lz_opt, "lz", Arg_parser::yes },
{ xz_opt, "xz", Arg_parser::yes },
{ 0 , 0, Arg_parser::no } };
const Arg_parser parser( argc, argv, options );
if( parser.error().size() ) // bad option
@ -312,7 +318,7 @@ int main( const int argc, const char * const argv[] )
case 'b': cat_options.number_lines = 1; break;
case 'c': break;
case 'd': break;
case 'e': cat_options.show_nonprinting = true; // fall through
case 'e': cat_options.show_nonprinting = true; // fall through
case 'E': cat_options.show_ends = true; break;
case 'f': break;
case 'h': show_help(); return 0;
@ -324,9 +330,10 @@ int main( const int argc, const char * const argv[] )
case 'N': break;
case 'O': format_index = parse_format_type( arg ); break;
case 'q': verbosity = -1; break;
case 'r': recursive = true; break;
case 'r': recursive = 1; break;
case 'R': recursive = 2; break;
case 's': cat_options.squeeze_blank = true; break;
case 't': cat_options.show_nonprinting = true; // fall through
case 't': cat_options.show_nonprinting = true; // fall through
case 'T': cat_options.show_tabs = true; break;
case 'v': cat_options.show_nonprinting = true; break;
case 'V': show_version(); return 0;
@ -347,13 +354,15 @@ int main( const int argc, const char * const argv[] )
for( ; argind < parser.arguments(); ++argind )
filenames.push_back( parser.argument( argind ) );
if( filenames.empty() ) filenames.push_back( "-" );
if( filenames.empty() ) filenames.push_back( recursive ? "." : "-" );
std::string input_filename;
int retval = 0;
bool error = false;
bool stdin_used = false;
while( next_filename( filenames, input_filename, error, recursive ) )
{
int infd;
if( input_filename.empty() )
{
if( stdin_used ) continue; else stdin_used = true;
@ -368,12 +377,12 @@ int main( const int argc, const char * const argv[] )
const int tmp = cat( infd, format_index, input_filename, cat_options );
if( tmp > retval ) retval = tmp;
if( input_filename.size() ) { close( infd ); infd = -1; }
if( input_filename.size() ) close( infd );
}
if( std::fclose( stdout ) != 0 )
{
show_error( "Can't close stdout", errno );
show_error( "Error closing stdout", errno );
error = true;
}
if( error && retval == 0 ) retval = 1;