-//
-// source-file.cc
-//
-
-#include <sys/types.h> // open, mmap
-#include <sys/stat.h> // open
-#include <sys/mman.h> // mmap
-#include <limits.h> // INT_MAX
-#include <fcntl.h> // open
-#include <unistd.h> // close, stat
-#include <stdio.h> // fdopen
-#include <string.h> // strerror
-#include <errno.h> // errno
+/*
+ source-file.cc -- implement Source_file
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
+ & Han-Wen Nienhuys <hanwen@stack.nl>
+*/
+
+
#include <assert.h>
#include <strstream.h>
#include "string.hh"
#include "proto.hh"
#include "plist.hh"
-
-
#include "warn.hh"
#include "windhoos-suck-suck-suck-thank-you-cygnus.hh"
-
#include "source-file.hh"
+#include "file-storage.hh"
-Source_file::Source_file( String filename_str )
+Source_file::Source_file(String filename_str)
{
- data_caddr_ = 0;
- fildes_i_ = 0;
- size_off_ = 0;
- name_str_ = filename_str;
- istream_p_ = 0;
-
- open();
- if ( fildes_i_ > 0 )
- map();
+ name_str_ = filename_str;
+ istream_p_ = 0;
+ storage_p_ = new Simple_file_storage(filename_str);
}
istream*
Source_file::istream_l()
{
- if ( !fildes_i_ )
- return &cin;
- if ( !istream_p_ ) {
- if ( size_off_ ) // can-t this be done without such a hack?
- istream_p_ = new istrstream( ch_C(), size_off_ );
- else {
- istream_p_ = new istrstream( "", 0 );
- istream_p_->set(ios::eofbit);
+ /*
+ if (!name_str_.length_i())
+ return &cin;
+ */
+
+ if (!istream_p_)
+ {
+ if (length_i()) // can-t this be done without such a hack?
+ istream_p_ = new istrstream(ch_C(), length_i());
+ else
+ {
+ istream_p_ = new istrstream("", 0);
+ istream_p_->set(ios::eofbit);
}
}
- return istream_p_;
+ return istream_p_;
}
-Source_file::~Source_file()
+String
+Source_file::file_line_no_str(char const *context_ch_C) const
{
- delete istream_p_;
- istream_p_ = 0;
- unmap();
- close();
+ if (!ch_C())
+ return "(unknown)";
+ else
+ return name_str() + ": "
+ + String(line_i(context_ch_C));
}
-char const*
-Source_file::ch_C()
+String
+Source_file::name_str() const
{
- assert( this );
- return (char const*)data_caddr_;
+ return name_str_;
}
-void
-Source_file::close()
+Source_file::~Source_file()
{
- if ( fildes_i_ ) {
- ::close( fildes_i_ );
- fildes_i_ = 0;
- }
+ delete istream_p_;
+ istream_p_ = 0;
+ delete storage_p_;
}
String
-Source_file::error_str( char const* pos_ch_C )
+Source_file::error_str(char const* pos_ch_C) const
{
- char const* data_ch_C = ch_C();
- char const * eof_C_ = data_ch_C + size_off_;
- if ( !in_b( pos_ch_C ) )
- return "(position unknown)";
+ char const* data_ch_C = ch_C();
+ char const * eof_C_ = data_ch_C + length_i();
+ if (!in_b(pos_ch_C))
+ return "(position unknown)";
- if ( pos_ch_C == eof_C_)
- pos_ch_C --;
- char const* begin_ch_C = pos_ch_C;
- while ( begin_ch_C > data_ch_C )
- if ( *--begin_ch_C == '\n' ) {
- begin_ch_C++;
- break;
- }
-
- char const* end_ch_C = pos_ch_C;
- while ( end_ch_C < eof_C_ )
- if ( *end_ch_C++ == '\n' ) {
- end_ch_C--;
- break;
- }
+ if (pos_ch_C == eof_C_)
+ pos_ch_C --;
+ char const* begin_ch_C = pos_ch_C;
+ while (begin_ch_C > data_ch_C)
+ if (*--begin_ch_C == '\n')
+ {
+ begin_ch_C++;
+ break;
+ }
+
+ char const* end_ch_C = pos_ch_C;
+ while (end_ch_C < eof_C_)
+ if (*end_ch_C++ == '\n')
+ {
+ end_ch_C--;
+ break;
+ }
- // String( char const* p, int length ) is missing!?
- String line_str( (Byte const*)begin_ch_C, end_ch_C - begin_ch_C );
-
- int error_col_i = 0;
- char const* scan_ch_C = begin_ch_C;
- while ( scan_ch_C < pos_ch_C )
- if ( *scan_ch_C++ == '\t' )
- error_col_i = ( error_col_i / 8 + 1 ) * 8;
- else
- error_col_i++;
-
- String str = line_str.left_str( pos_ch_C - begin_ch_C )
- + String( '\n' )
- + String( ' ', error_col_i )
- + line_str.mid_str( pos_ch_C - begin_ch_C, INT_MAX ); // String::mid should take 0 arg..
- return str;
+ // String(char const* p, int length) is missing!?
+ String line_str((Byte const*)begin_ch_C, end_ch_C - begin_ch_C);
+
+ int error_col_i = 0;
+ char const* scan_ch_C = begin_ch_C;
+ while (scan_ch_C < pos_ch_C)
+ if (*scan_ch_C++ == '\t')
+ error_col_i = (error_col_i / 8 + 1) * 8;
+ else
+ error_col_i++;
+
+ String str = line_str.left_str(pos_ch_C - begin_ch_C)
+ + String('\n')
+ + String(' ', error_col_i)
+ + line_str.mid_str(pos_ch_C - begin_ch_C, INT_MAX); // String::mid should take 0 arg..
+ return str;
}
bool
-Source_file::in_b( char const* pos_ch_C )
+Source_file::in_b(char const* pos_ch_C) const
{
- return ( pos_ch_C && ( pos_ch_C >= ch_C() ) && ( pos_ch_C <= ch_C() + size_off_ ) );
+ return (pos_ch_C && (pos_ch_C >= ch_C()) && (pos_ch_C <= ch_C() + length_i()));
}
-off_t
-Source_file::length_off()
-{
- return size_off_;
-}
int
-Source_file::line_i( char const* pos_ch_C )
+Source_file::line_i(char const* pos_ch_C) const
{
- if ( !in_b( pos_ch_C ) )
- return 0;
-
- int i = 1;
- char const* scan_ch_C = ch_C();
- while ( scan_ch_C < pos_ch_C )
- if ( *scan_ch_C++ == '\n' )
- i++;
- return i;
-}
-
-void
-Source_file::map()
-{
- if ( fildes_i_ == -1 )
- return;
+ if (!in_b(pos_ch_C))
+ return 0;
- data_caddr_ = (caddr_t)mmap( (void*)0, size_off_, PROT_READ, MAP_SHARED, fildes_i_, 0 );
-
- if ( (int)data_caddr_ == -1 )
- warning( String( "can't map: " ) + name_str_ + String( ": " ) + strerror( errno ));
+ int i = 1;
+ char const* scan_ch_C = ch_C();
+ if (!scan_ch_C)
+ return 0;
+
+ while (scan_ch_C < pos_ch_C)
+ if (*scan_ch_C++ == '\n')
+ i++;
+ return i;
}
-String
-Source_file::name_str()
+int
+Source_file::length_i() const
{
- return name_str_;
+ return storage_p_->length_i();
}
-void
-Source_file::open()
+char const *
+Source_file::ch_C() const
{
- if ( !name_str_.length_i() || ( name_str_ == "-" ) ) {
- fildes_i_ = 0;
- return;
- }
-
- fildes_i_ = ::open( name_str_, O_RDONLY );
-
- if ( fildes_i_ == -1 ) {
- warning( String( "can't open: " ) + name_str_ + String( ": " ) + strerror( errno ));
- return;
- }
-
- struct stat file_stat;
- fstat( fildes_i_, &file_stat );
- size_off_ = file_stat.st_size;
-}
-
-void
-Source_file::unmap()
-{
- if ( data_caddr_ ) {
- munmap( data_caddr_, size_off_ );
- data_caddr_ = 0;
- size_off_ = 0;
- }
-}
-String
-Source_file::file_line_no_str(char const *ch_C )
-{
- return name_str() + ": "
- + String( line_i( ch_C ) );
+ return storage_p_->ch_C();
}
projects / lilypond.git / blobdiff