Use Natural Sort by Name in v1.x
Этот коммит содержится в:
Ciprian Tomoiaga
родитель
e1a9b30803
Коммит
8137444062
@ -12,6 +12,7 @@ ncdu_SOURCES=\
|
||||
src/dir_scan.c\
|
||||
src/exclude.c\
|
||||
src/help.c\
|
||||
src/strnatcmp.c\
|
||||
src/shell.c\
|
||||
src/quit.c\
|
||||
src/main.c\
|
||||
|
||||
@ -24,6 +24,7 @@
|
||||
*/
|
||||
|
||||
#include "global.h"
|
||||
#include "strnatcmp.h"
|
||||
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
@ -79,7 +80,7 @@ static int dirlist_cmp(struct dir *x, struct dir *y) {
|
||||
*
|
||||
* Note that the method used below is supposed to be fast, not readable :-)
|
||||
*/
|
||||
#define CMP_NAME strcmp(x->name, y->name)
|
||||
#define CMP_NAME strnatcmp(x->name, y->name)
|
||||
#define CMP_SIZE (x->size > y->size ? 1 : (x->size == y->size ? 0 : -1))
|
||||
#define CMP_ASIZE (x->asize > y->asize ? 1 : (x->asize == y->asize ? 0 : -1))
|
||||
#define CMP_ITEMS (x->items > y->items ? 1 : (x->items == y->items ? 0 : -1))
|
||||
@ -395,4 +396,3 @@ void dirlist_set_hidden(int hidden) {
|
||||
dirlist_fixup();
|
||||
dirlist_top(-5);
|
||||
}
|
||||
|
||||
|
||||
177
src/strnatcmp.c
Обычный файл
177
src/strnatcmp.c
Обычный файл
@ -0,0 +1,177 @@
|
||||
/* -*- mode: c; c-file-style: "k&r" -*-
|
||||
|
||||
strnatcmp.c -- Perform 'natural order' comparisons of strings in C.
|
||||
Copyright (C) 2000, 2004 by Martin Pool <mbp sourcefrog net>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
|
||||
|
||||
/* partial change history:
|
||||
*
|
||||
* 2004-10-10 mbp: Lift out character type dependencies into macros.
|
||||
*
|
||||
* Eric Sosman pointed out that ctype functions take a parameter whose
|
||||
* value must be that of an unsigned int, even on platforms that have
|
||||
* negative chars in their default char type.
|
||||
*/
|
||||
|
||||
#include <stddef.h> /* size_t */
|
||||
#include <ctype.h>
|
||||
|
||||
#include "strnatcmp.h"
|
||||
|
||||
|
||||
/* These are defined as macros to make it easier to adapt this code to
|
||||
* different characters types or comparison functions. */
|
||||
static inline int
|
||||
nat_isdigit(nat_char a)
|
||||
{
|
||||
return isdigit((unsigned char) a);
|
||||
}
|
||||
|
||||
|
||||
static inline int
|
||||
nat_isspace(nat_char a)
|
||||
{
|
||||
return isspace((unsigned char) a);
|
||||
}
|
||||
|
||||
|
||||
static inline nat_char
|
||||
nat_toupper(nat_char a)
|
||||
{
|
||||
return toupper((unsigned char) a);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
compare_right(nat_char const *a, nat_char const *b)
|
||||
{
|
||||
int bias = 0;
|
||||
|
||||
/* The longest run of digits wins. That aside, the greatest
|
||||
value wins, but we can't know that it will until we've scanned
|
||||
both numbers to know that they have the same magnitude, so we
|
||||
remember it in BIAS. */
|
||||
for (;; a++, b++) {
|
||||
if (!nat_isdigit(*a) && !nat_isdigit(*b))
|
||||
return bias;
|
||||
if (!nat_isdigit(*a))
|
||||
return -1;
|
||||
if (!nat_isdigit(*b))
|
||||
return +1;
|
||||
if (*a < *b) {
|
||||
if (!bias)
|
||||
bias = -1;
|
||||
} else if (*a > *b) {
|
||||
if (!bias)
|
||||
bias = +1;
|
||||
} else if (!*a && !*b)
|
||||
return bias;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
compare_left(nat_char const *a, nat_char const *b)
|
||||
{
|
||||
/* Compare two left-aligned numbers: the first to have a
|
||||
different value wins. */
|
||||
for (;; a++, b++) {
|
||||
if (!nat_isdigit(*a) && !nat_isdigit(*b))
|
||||
return 0;
|
||||
if (!nat_isdigit(*a))
|
||||
return -1;
|
||||
if (!nat_isdigit(*b))
|
||||
return +1;
|
||||
if (*a < *b)
|
||||
return -1;
|
||||
if (*a > *b)
|
||||
return +1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
strnatcmp0(nat_char const *a, nat_char const *b, int fold_case)
|
||||
{
|
||||
int ai, bi;
|
||||
nat_char ca, cb;
|
||||
int fractional, result;
|
||||
|
||||
ai = bi = 0;
|
||||
while (1) {
|
||||
ca = a[ai]; cb = b[bi];
|
||||
|
||||
/* skip over leading spaces or zeros */
|
||||
while (nat_isspace(ca))
|
||||
ca = a[++ai];
|
||||
|
||||
while (nat_isspace(cb))
|
||||
cb = b[++bi];
|
||||
|
||||
/* process run of digits */
|
||||
if (nat_isdigit(ca) && nat_isdigit(cb)) {
|
||||
fractional = (ca == '0' || cb == '0');
|
||||
|
||||
if (fractional) {
|
||||
if ((result = compare_left(a+ai, b+bi)) != 0)
|
||||
return result;
|
||||
} else {
|
||||
if ((result = compare_right(a+ai, b+bi)) != 0)
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
if (!ca && !cb) {
|
||||
/* The strings compare the same. Perhaps the caller
|
||||
will want to call strcmp to break the tie. */
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (fold_case) {
|
||||
ca = nat_toupper(ca);
|
||||
cb = nat_toupper(cb);
|
||||
}
|
||||
|
||||
if (ca < cb)
|
||||
return -1;
|
||||
|
||||
if (ca > cb)
|
||||
return +1;
|
||||
|
||||
++ai; ++bi;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
strnatcmp(nat_char const *a, nat_char const *b) {
|
||||
return strnatcmp0(a, b, 0);
|
||||
}
|
||||
|
||||
|
||||
/* Compare, recognizing numeric string and ignoring case. */
|
||||
int
|
||||
strnatcasecmp(nat_char const *a, nat_char const *b) {
|
||||
return strnatcmp0(a, b, 1);
|
||||
}
|
||||
31
src/strnatcmp.h
Обычный файл
31
src/strnatcmp.h
Обычный файл
@ -0,0 +1,31 @@
|
||||
/* -*- mode: c; c-file-style: "k&r" -*-
|
||||
|
||||
strnatcmp.c -- Perform 'natural order' comparisons of strings in C.
|
||||
Copyright (C) 2000, 2004 by Martin Pool <mbp sourcefrog net>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
|
||||
|
||||
/* CUSTOMIZATION SECTION
|
||||
*
|
||||
* You can change this typedef, but must then also change the inline
|
||||
* functions in strnatcmp.c */
|
||||
typedef char nat_char;
|
||||
|
||||
int strnatcmp(nat_char const *a, nat_char const *b);
|
||||
int strnatcasecmp(nat_char const *a, nat_char const *b);
|
||||
Загрузка…
Ссылка в новой задаче
Block a user