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|
/************************************************************************/
/* */
/* Consult the operating system about certain things. */
/* */
/* 0) mkdir() is not declared on linux, suppress warning. */
/* 1) Note that we use shell commands to consult the file system. */
/* this is the easiest way. */
/* */
/************************************************************************/
# include "config.h"
# include <stdlib.h>
# include <string.h>
# include <sys/types.h>
# include <pwd.h>
# include <unistd.h>
# include <sys/stat.h>
# include <time.h>
# include <errno.h>
# include <appSystem.h>
# include <debugon.h>
/* 0 */
# ifdef __linux__
extern int mkdir( const char * name, mode_t mode );
# endif
# define USE_STAT 1
# define USE_ACCESS 1
# define USE_GETCWD 1
# if HAVE_DIRENT_H
# define USE_OPENDIR 1
# include <dirent.h>
# endif
/************************************************************************/
/* */
/* Determine the home directory of the user. */
/* */
/************************************************************************/
int appHomeDirectory( char * home,
int len )
{
struct passwd * pwd;
int l;
pwd= getpwuid( getuid() );
if ( ! pwd )
{ LXDEB(getuid(),pwd); return -1; }
if ( ! pwd->pw_dir )
{ XDEB(pwd->pw_dir); }
l= strlen( pwd->pw_dir );
if ( l > len )
{ SLDEB(pwd->pw_dir,len); return -1; }
strcpy( home, pwd->pw_dir ); return l;
}
/************************************************************************/
/* */
/* Check whether a directory exists. */
/* */
/************************************************************************/
#if USE_STAT
int appTestDirectory( const char * dir )
{
struct stat st;
if ( stat( dir, &st ) )
{
if ( errno != ENOENT )
{ SSDEB(dir,strerror(errno)); }
return -1;
}
if ( ! S_ISDIR( st.st_mode ) )
{ return -1; }
return 0;
}
#else
int appTestDirectory( const char * dir )
{
char scratch[1001];
sprintf( scratch, "test -d '%s'", dir );
if ( system( scratch ) )
{ return -1; }
return 0;
}
#endif
#if USE_ACCESS
int appTestFileWritable( const char * file )
{
if ( access( file, W_OK ) )
{ return -1; }
return 0;
}
#else
int appTestFileWritable( const char * file )
{
char scratch[1001];
sprintf( scratch, "test -w '%s'", file );
if ( system( scratch ) )
{ return -1; }
return 0;
}
#endif
#if USE_ACCESS
int appTestFileReadable( const char * file )
{
if ( access( file, R_OK ) )
{ return -1; }
return 0;
}
#else
int appTestFileReadable( const char * file )
{
char scratch[1001];
sprintf( scratch, "test -w '%s'", file );
if ( system( scratch ) )
{ return -1; }
return 0;
}
#endif
#if USE_STAT
int appTestFileExists( const char * file )
{
struct stat st;
if ( stat( file, &st ) )
{
if ( errno != ENOENT )
{ SSDEB(file,strerror(errno)); }
return -1;
}
if ( ! S_ISREG( st.st_mode ) )
{ return -1; }
return 0;
}
#else
int appTestFileExists( const char * file )
{
char scratch[1001];
sprintf( scratch, "test -f '%s'", file );
if ( system( scratch ) )
{ return -1; }
return 0;
}
#endif
/************************************************************************/
/* */
/* Make a Directory. */
/* */
/************************************************************************/
int appMakeDirectory( const char * dir )
{
if ( mkdir( dir, 0777 ) )
{ SSDEB(dir,strerror(errno)); return -1; }
return 0;
}
/************************************************************************/
/* */
/* Make a Directory. */
/* */
/************************************************************************/
long appGetTimestamp( void )
{
long now;
now= time( (long *)0 ); sleep( 1 );
return now;
}
/************************************************************************/
/* */
/* Translate a file name to an absolute name. */
/* */
/************************************************************************/
int appAbsoluteName( char * absolute,
int len,
const char * filename )
{
int rellen;
int abslen;
rellen= strlen( filename );
if ( filename[0] == '/' )
{
if ( rellen > len )
{ SLDEB(filename,len); return -1; }
strcpy( absolute, filename ); return rellen;
}
if ( rellen > len- 2 )
{ SLDEB(filename,len); return -1; }
# if USE_GETCWD
if ( ! getcwd( absolute, len- rellen- 2 ) )
{ LDEB(len); SSDEB(filename,strerror(errno)); return -1; }
abslen= strlen( absolute );
# else
{
FILE * f= popen( "pwd", "r" );
if ( ! f )
{ XDEB(f); return -1; }
if ( ! fgets( absolute, len- rellen- 2, f ) )
{ LDEB(1); pclose( f ); return -1; }
abslen= strlen( absolute );
if ( abslen < 1 || absolute[abslen -1] != '\n' )
{ SDEB(absolute); return -1; }
absolute[abslen--]= '\0';
pclose( f );
}
# endif
absolute[abslen]= '/';
strcpy( absolute+ abslen+ 1, filename );
return abslen+ 1+ rellen;
}
/************************************************************************/
/* */
/* Remove a file. */
/* */
/************************************************************************/
int appRemoveFile( const char * filename )
{
if ( remove( filename ) )
{ SSDEB(filename,strerror(errno)); return -1; }
return 0;
}
/************************************************************************/
/* */
/* Call a function for all files matching a certain criterion. */
/* */
/************************************************************************/
# define FILEL 1000
#if USE_OPENDIR
int appForAllFiles( const char * dir,
const char * ext,
void * through,
FILE_CALLBACK callback )
{
int rval= 0;
DIR * d= opendir( dir );
struct dirent * de;
if ( ! d )
{ SSDEB(dir,strerror(errno)); return -1; }
de= readdir( d );
while( de )
{
char * dot= strrchr( de->d_name, '.' );
if ( dot &&
! strcmp( dot+ 1, ext ) )
{
char scratch[FILEL+1];
sprintf( scratch, "%s/%s", dir, de->d_name );
if ( (*callback)( scratch, through ) )
{ SDEB(scratch); rval= -1; break; }
}
de= readdir( d );
}
if ( closedir( d ) )
{ SSDEB(dir,strerror(errno)); rval= -1; }
return rval;
}
#else
int appForAllFiles( const char * dir,
const char * ext,
void * through,
FILE_CALLBACK callback )
{
int rval= 0;
char scratch[FILEL+1];
char * format= "( ls '%s'/*.'%s' ) 2>/dev/null";
FILE * names;
sprintf( scratch, format, dir, ext );
names= popen( scratch, "r" );
if ( ! names )
{ SXDEB(scratch,names); return -1; }
while( fgets( scratch, FILEL, names ) )
{
int len= strlen( scratch );
if ( len > 0 && scratch[len -1] == '\n' )
{ scratch[len -1]= '\0'; }
else{ SLDEB(scratch,len); continue; }
if ( (*callback)( scratch, through ) )
{ SDEB(scratch); rval= -1; break; }
}
if ( pclose( names ) )
{ LDEB(1); rval= -1; }
return rval;
}
#endif
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