mirror of
https://github.com/fish-shell/fish-shell
synced 2024-12-26 04:43:10 +00:00
140 lines
2.4 KiB
C++
140 lines
2.4 KiB
C++
/** \file util.c
|
|
Generic utilities library.
|
|
|
|
Contains datastructures such as automatically growing array lists, priority queues, etc.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <wchar.h>
|
|
#include <math.h>
|
|
#include <sys/time.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <wctype.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <dirent.h>
|
|
#include <errno.h>
|
|
#include <assert.h>
|
|
|
|
#include "fallback.h"
|
|
#include "util.h"
|
|
|
|
#include "common.h"
|
|
#include "wutil.h"
|
|
|
|
/**
|
|
Minimum allocated size for data structures. Used to avoid excessive
|
|
memory allocations for lists, hash tables, etc, which are nearly
|
|
empty.
|
|
*/
|
|
#define MIN_SIZE 32
|
|
|
|
/**
|
|
Maximum number of characters that can be inserted using a single
|
|
call to sb_printf. This is needed since vswprintf doesn't tell us
|
|
what went wrong. We don't know if we ran out of space or something
|
|
else went wrong. We assume that any error is an out of memory-error
|
|
and try again until we reach this size. After this size has been
|
|
reached, it is instead assumed that something was wrong with the
|
|
format string.
|
|
*/
|
|
#define SB_MAX_SIZE (128*1024*1024)
|
|
|
|
int mini( int a,
|
|
int b )
|
|
{
|
|
return a<b?a:b;
|
|
}
|
|
|
|
|
|
int maxi( int a,
|
|
int b )
|
|
{
|
|
return a>b?a:b;
|
|
}
|
|
|
|
int wcsfilecmp( const wchar_t *a, const wchar_t *b )
|
|
{
|
|
CHECK( a, 0 );
|
|
CHECK( b, 0 );
|
|
|
|
if( *a==0 )
|
|
{
|
|
if( *b==0)
|
|
return 0;
|
|
return -1;
|
|
}
|
|
if( *b==0 )
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int secondary_diff=0;
|
|
if( iswdigit( *a ) && iswdigit( *b ) )
|
|
{
|
|
wchar_t *aend, *bend;
|
|
long al;
|
|
long bl;
|
|
int diff;
|
|
|
|
errno = 0;
|
|
al = wcstol( a, &aend, 10 );
|
|
bl = wcstol( b, &bend, 10 );
|
|
|
|
if( errno )
|
|
{
|
|
/*
|
|
Huuuuuuuuge numbers - fall back to regular string comparison
|
|
*/
|
|
return wcscmp( a, b );
|
|
}
|
|
|
|
diff = al - bl;
|
|
if( diff )
|
|
return diff>0?2:-2;
|
|
|
|
secondary_diff = (aend-a) - (bend-b);
|
|
|
|
a=aend-1;
|
|
b=bend-1;
|
|
}
|
|
else
|
|
{
|
|
int diff = towlower(*a) - towlower(*b);
|
|
if( diff != 0 )
|
|
return (diff>0)?2:-2;
|
|
|
|
secondary_diff = *a-*b;
|
|
}
|
|
|
|
int res = wcsfilecmp( a+1, b+1 );
|
|
|
|
if( abs(res) < 2 )
|
|
{
|
|
/*
|
|
No primary difference in rest of string.
|
|
Use secondary difference on this element if found.
|
|
*/
|
|
if( secondary_diff )
|
|
{
|
|
return secondary_diff>0?1:-1;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
long long get_time()
|
|
{
|
|
struct timeval time_struct;
|
|
gettimeofday( &time_struct, 0 );
|
|
return 1000000ll*time_struct.tv_sec+time_struct.tv_usec;
|
|
}
|
|
|