mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-24 10:46:59 +08:00
be33d3f2a4
This reverts commit74135c0600, reversing changes made to6d749789ce. See discussion in #1317
128 lines
2.6 KiB
C++
128 lines
2.6 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 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;
|
|
}
|
|
|
|
long secondary_diff=0;
|
|
if (iswdigit(*a) && iswdigit(*b))
|
|
{
|
|
wchar_t *aend, *bend;
|
|
long al;
|
|
long bl;
|
|
long 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;
|
|
}
|
|
|