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Initial implementation of the Path operating system concept.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16048 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2004-08-25 06:20:07 +00:00
parent 17f130c61e
commit b89a2237ea
8 changed files with 569 additions and 0 deletions
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138
lib/System/Unix/Path.cpp Normal file
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//===- llvm/System/Unix/Path.cpp - Unix Path Implementation -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Unix specific portion of the Path class.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only generic UNIX code that
//=== is guaranteed to work on all UNIX variants.
//===----------------------------------------------------------------------===//
#include "Unix.h"
#include <sys/stat.h>
#include <fcntl.h>
bool
Path::is_file() const {
if (!empty() && ((*this)[length()-1] != '/'))
return true;
return false;
}
bool
Path::is_directory() const {
if ((!empty()) && ((*this)[length()-1] == '/'))
return true;
return false;
}
void
Path::create( bool create_parents) {
if ( is_directory() ) {
if ( create_parents )
this->create_directories( );
this->create_directory( );
} else if ( is_file() ) {
if ( create_parents )
this->create_directories( );
this->create_file( );
}
}
void
Path::remove() {
if ( is_directory() ) {
if ( exists() )
this->remove_directory( );
} else if ( is_file() )
if ( exists() )
this->remove_file( );
}
bool
Path::exists() {
char pathname[MAXPATHLEN];
this->fill(pathname,MAXPATHLEN);
int lastchar = this->length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
return 0 == access(pathname, F_OK );
}
void
Path::create_directory( ) {
char pathname[MAXPATHLEN];
this->fill(pathname,MAXPATHLEN);
int lastchar = this->length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(pathname);
}
void
Path::create_directories() {
char pathname[MAXPATHLEN];
this->fill(pathname,MAXPATHLEN);
int lastchar = this->length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
char * next = index(pathname,'/');
if ( pathname[0] == '/')
next = index(&pathname[1],'/');
while ( next != 0 )
{
*next = 0;
if (0 != access(pathname, F_OK | R_OK))
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(pathname);
char* save = next;
next = index(pathname,'/');
*save = '/';
}
}
void
Path::remove_directory()
{
char pathname[MAXPATHLEN];
this->fill(pathname,MAXPATHLEN);
int lastchar = this->length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if ( 0 != rmdir(pathname))
ThrowErrno(pathname);
}
void
Path::create_file() {
char pathname[MAXPATHLEN];
this->fill(pathname,MAXPATHLEN);
int lastchar = this->length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if (0 != creat(pathname, S_IRUSR | S_IWUSR))
ThrowErrno(pathname);
}
void
Path::remove_file() {
char pathname[MAXPATHLEN];
this->fill(pathname,MAXPATHLEN);
int lastchar = this->length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if (0 != unlink(pathname))
ThrowErrno(pathname);
}
// vim: sw=2