Mercurial > noffle
view src/fetchlist.c @ 243:6eb6c912a0e4 noffle
[svn] * src/group.c: Make comparison against NULL explicit in an if containing
an assignment, as I'm sad enough to think it is safer if it is obvious
that the assignment is meant to be there.
author | bears |
---|---|
date | Fri, 15 Mar 2002 10:49:56 +0000 |
parents | f8a91e2b4060 |
children | 5eece4dfd945 |
line wrap: on
line source
/* fetchlist.c $Id: fetchlist.c 368 2002-02-14 17:14:34Z bears $ */ #if HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> #include <errno.h> #include <unistd.h> #include "fetchlist.h" #include "configfile.h" #include "log.h" #include "util.h" #include "portable.h" struct Elem { Str name; FetchMode mode; }; static struct Fetchlist { struct Elem *elem; int size; int max; Bool dirty; } fetchlist = { NULL, 0, 0, FALSE }; static void clearList( void ) { fetchlist.size = 0; fetchlist.dirty = FALSE; } static int compareElem( const void *elem1, const void *elem2 ) { const struct Elem* e1 = (const struct Elem*)elem1; const struct Elem* e2 = (const struct Elem*)elem2; return strcmp( e1->name, e2->name ); } static struct Elem * searchElem( const char *name ) { int i; for ( i = 0; i < fetchlist.size; ++i ) if ( strcmp( name, fetchlist.elem[ i ].name ) == 0 ) return &fetchlist.elem[ i ]; return NULL; } static void appGrp( const char *name, FetchMode mode ) { struct Elem elem; if ( fetchlist.max < fetchlist.size + 1 ) { if ( ! ( fetchlist.elem = realloc( fetchlist.elem, ( fetchlist.max + 50 ) * sizeof( fetchlist.elem[ 0 ] ) ) ) ) { Log_err( "Could not realloc fetchlist" ); exit( EXIT_FAILURE ); } fetchlist.max += 50; } strcpy( elem.name, name ); elem.mode = mode; fetchlist.elem[ fetchlist.size++ ] = elem; } void Fetchlist_read( void ) { FILE *f; Str file; char *p; FetchMode mode = OVER; Bool valid; int ret; Str line, grp, modeStr; Log_dbg( LOG_DBG_FETCH, "Reading %s", file ); snprintf( file, MAXCHAR, "%s/fetchlist", Cfg_spoolDir() ); clearList(); if ( ! ( f = fopen( file, "r" ) ) ) { Log_inf( "No file %s", file ); return; } while ( fgets( line, MAXCHAR, f ) ) { p = Utl_stripWhiteSpace( line ); if ( *p == '#' || *p == '\0' ) continue; ret = sscanf( p, "%s %s", grp, modeStr ); valid = TRUE; if ( ret < 1 || ret > 2 ) valid = FALSE; else if ( ret >= 2 ) { if ( strcmp( modeStr, "full" ) == 0 ) mode = FULL; else if ( strcmp( modeStr, "thread" ) == 0 ) mode = THREAD; else if ( strcmp( modeStr, "over" ) == 0 ) mode = OVER; else valid = FALSE; } if ( ! valid ) { Log_err( "Invalid entry in %s: %s", file, line ); continue; } appGrp( grp, mode ); } if ( ferror( f ) ) Log_err( "Error reading %s: %s", file, strerror( errno ) ); if ( fclose( f ) != 0 ) Log_err( "Error closing %s; %s", file, strerror( errno ) ); } Bool Fetchlist_write( void ) { int i; FILE *f; Str file, tmpfname; const char *modeStr = ""; Bool res; /* Any changes? */ if ( ! fetchlist.dirty ) return TRUE; qsort( fetchlist.elem, (size_t)fetchlist.size, sizeof( fetchlist.elem[ 0 ] ), compareElem ); snprintf( file, MAXCHAR, "%s/fetchlist", Cfg_spoolDir() ); snprintf( tmpfname, MAXCHAR, "%s/.#%d.fetchlist", Cfg_spoolDir(), (int) getpid() ); if ( ! ( f = fopen( tmpfname, "w" ) ) ) { Log_err( "Could not open %s for writing", file ); return FALSE; } res = TRUE; for ( i = 0; i < fetchlist.size; ++i ) { switch ( fetchlist.elem[ i ].mode ) { case FULL: modeStr = "full"; break; case THREAD: modeStr = "thread"; break; case OVER: modeStr = "over"; break; } fprintf( f, "%s %s\n", fetchlist.elem[ i ].name, modeStr ); if ( ferror( f ) ) { Log_err( "Error writing %s: %s", tmpfname, strerror( errno ) ); clearerr( f ); res = FALSE; } } if ( fclose( f ) != 0 ) { Log_err( "Error closing %s: %s", tmpfname, strerror( errno ) ); res = FALSE; } if ( res ) { if ( rename( tmpfname, file ) < 0 ) { Log_err( "Rename of %s to %s failed: %s", tmpfname, file, strerror( errno ) ); res = FALSE; } } return res; } int Fetchlist_size( void ) { return fetchlist.size; } Bool Fetchlist_contains( const char *name, FetchMode *mode ) { struct Elem *elem = searchElem( name ); if ( elem == NULL ) return FALSE; if ( mode != NULL ) *mode = elem->mode; return TRUE; } Bool Fetchlist_element( const char **name, FetchMode *mode, int idx ) { if ( idx < 0 || idx >= fetchlist.size ) return FALSE; *name = fetchlist.elem[ idx ].name; *mode = fetchlist.elem[ idx ].mode; return TRUE; } Bool Fetchlist_add( const char *name, FetchMode mode ) { struct Elem *elem = searchElem( name ); fetchlist.dirty = TRUE; if ( elem == NULL ) { appGrp( name, mode ); return TRUE; } strcpy( elem->name, name ); elem->mode = mode; return FALSE; } Bool Fetchlist_remove( const char *name ) { struct Elem *elem = searchElem( name ); if ( elem == NULL ) return FALSE; fetchlist.dirty = TRUE; *elem = fetchlist.elem[ fetchlist.size - 1 ]; --fetchlist.size; return TRUE; }