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Add optional ls file sorting, thanks to a patch from

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Sterling Huxley <sterling@europa.com>
 -Erik
This commit is contained in:
Eric Andersen 2000-08-11 18:10:21 +00:00
parent f9ca653faa
commit 79565b6c91
4 changed files with 179 additions and 2 deletions
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6
Changelog
View File

@ -7,8 +7,10 @@
* syslogd can now log messages to a remote host -- patch thanks
to Gyepi Sam <gyepi@praxis-sw.com>
* Rewrite of 'tail' to make it simpler, smaller, and more robust.
It now weighs only 2.25k (3k when full featured). The code it
much cleaner, thanks to "Allen Soard" <esp-software@mail.hypermart.net>
It now weighs only 2.25k (3k when full featured). The code is
cleaner too, thanks to Allen Soard <esp-software@mail.hypermart.net>
* Add optional ls file sorting, thanks to a patch from
Sterling Huxley <sterling@europa.com>
-Erik Andersen

3
busybox.def.h
View File

@ -161,6 +161,9 @@
// enable ls -p and -F
#define BB_FEATURE_LS_FILETYPES
//
// sort the file names
#define BB_FEATURE_LS_SORTFILES
//
// enable ls -R
#define BB_FEATURE_LS_RECURSIVE
//

86
coreutils/ls.c
View File

@ -90,6 +90,14 @@
#define MINOR(dev) ((dev)&0xff)
#endif
#ifdef BB_FEATURE_LS_SORTFILES
struct dnode { /* the basic node */
char *name; /* the dir entry name */
char *fullname; /* the dir entry name */
struct stat dstat; /* the file stat info */
};
typedef struct dnode dnode_t;
#endif
static unsigned char display_fmt = FMT_AUTO;
static unsigned short opts = 0;
static unsigned short column = 0;
@ -328,6 +336,48 @@ static void list_single(const char *name, struct stat *info,
}
}
#ifdef BB_FEATURE_LS_SORTFILES
void shellsort(struct dnode *dn[], int size)
{
struct dnode *temp;
int gap, i, j;
/* shell short the array */
for (gap= size/2; gap>0; gap /=2) {
for (i=gap; i<size; i++) {
for (j= i-gap; j>=0; j-=gap) {
if (strcmp(dn[j]->name, dn[j+gap]->name) <= 0)
break;
temp= dn[j];
dn[j]= dn[j+gap];
dn[j+gap]= temp;
}
}
}
}
void showdnodes(struct dnode *dn[], int nfiles)
{
int nf, nc;
int ncols, fpc, i;
ncols= (int)(terminal_width / (column_width + COLUMN_GAP));
/* files per column. The +1 means the last col is shorter than others */
fpc= (nfiles / ncols) + 1;
for (nf=0; nf<fpc; nf++) {
for (nc=0; nc<ncols; nc++) {
/* reach into the array based on the column and row */
i= (nc * fpc) + nf;
if (i >= nfiles) {
newline();
} else {
list_single(dn[i]->name, &dn[i]->dstat, dn[i]->fullname);
}
}
}
}
#endif
/**
**
** List the given file or directory, expanding a directory
@ -341,6 +391,11 @@ static int list_item(const char *name)
DIR *dir;
struct dirent *entry;
char fullname[BUFSIZ + 1], *fnend;
#ifdef BB_FEATURE_LS_SORTFILES
int ni=0, nfiles=0;
struct dnode **dnp;
dnode_t *cur;
#endif
if (lstat(name, &info))
goto listerr;
@ -369,6 +424,18 @@ static int list_item(const char *name)
column_width = 0;
while ((entry = readdir(dir)) != NULL) {
short w = strlen(entry->d_name);
#ifdef BB_FEATURE_LS_SORTFILES
const char *en = entry->d_name;
if (en[0] == '.') {
if (!en[1] || (en[1] == '.' && !en[2])) { /* . or .. */
if (!(opts & DISP_DOT))
continue;
} else if (!(opts & DISP_HIDDEN))
continue;
}
nfiles++; /* count how many files there will be */
#endif
if (column_width < w)
column_width = w;
@ -381,6 +448,12 @@ static int list_item(const char *name)
if (!dir)
goto listerr;
#endif
#endif
#ifdef BB_FEATURE_LS_SORTFILES
/* now that we know how many files there are
* allocate memory for an array to hold dnode pointers
*/
dnp= (struct dnode **)calloc((size_t)nfiles, (size_t)(sizeof(struct dnode *)));
#endif
/* List the contents */
@ -402,11 +475,24 @@ static int list_item(const char *name)
}
/* FIXME: avoid stat if not required */
strcpy(fnend, entry->d_name);
#ifdef BB_FEATURE_LS_SORTFILES
/* allocate memory for a node and memory for the file name */
cur= (struct dnode *)malloc(sizeof(struct dnode));
cur->fullname= strcpy((char *)malloc(strlen(fullname)+1), fullname);
cur->name= cur->fullname + (int)(fnend - fullname) ;
lstat(fullname, &cur->dstat); /* get file stat info into node */
dnp[ni++]= cur; /* save pointer to node in array */
#else
if (lstat(fullname, &info))
goto direrr; /* (shouldn't fail) */
list_single(entry->d_name, &info, fullname);
#endif
}
closedir(dir);
#ifdef BB_FEATURE_LS_SORTFILES
shellsort(dnp, nfiles);
showdnodes(dnp, nfiles);
#endif
if (opts & DISP_DIRNAME) { /* separate the directory */
if (column) {

86
ls.c
View File

@ -90,6 +90,14 @@
#define MINOR(dev) ((dev)&0xff)
#endif
#ifdef BB_FEATURE_LS_SORTFILES
struct dnode { /* the basic node */
char *name; /* the dir entry name */
char *fullname; /* the dir entry name */
struct stat dstat; /* the file stat info */
};
typedef struct dnode dnode_t;
#endif
static unsigned char display_fmt = FMT_AUTO;
static unsigned short opts = 0;
static unsigned short column = 0;
@ -328,6 +336,48 @@ static void list_single(const char *name, struct stat *info,
}
}
#ifdef BB_FEATURE_LS_SORTFILES
void shellsort(struct dnode *dn[], int size)
{
struct dnode *temp;
int gap, i, j;
/* shell short the array */
for (gap= size/2; gap>0; gap /=2) {
for (i=gap; i<size; i++) {
for (j= i-gap; j>=0; j-=gap) {
if (strcmp(dn[j]->name, dn[j+gap]->name) <= 0)
break;
temp= dn[j];
dn[j]= dn[j+gap];
dn[j+gap]= temp;
}
}
}
}
void showdnodes(struct dnode *dn[], int nfiles)
{
int nf, nc;
int ncols, fpc, i;
ncols= (int)(terminal_width / (column_width + COLUMN_GAP));
/* files per column. The +1 means the last col is shorter than others */
fpc= (nfiles / ncols) + 1;
for (nf=0; nf<fpc; nf++) {
for (nc=0; nc<ncols; nc++) {
/* reach into the array based on the column and row */
i= (nc * fpc) + nf;
if (i >= nfiles) {
newline();
} else {
list_single(dn[i]->name, &dn[i]->dstat, dn[i]->fullname);
}
}
}
}
#endif
/**
**
** List the given file or directory, expanding a directory
@ -341,6 +391,11 @@ static int list_item(const char *name)
DIR *dir;
struct dirent *entry;
char fullname[BUFSIZ + 1], *fnend;
#ifdef BB_FEATURE_LS_SORTFILES
int ni=0, nfiles=0;
struct dnode **dnp;
dnode_t *cur;
#endif
if (lstat(name, &info))
goto listerr;
@ -369,6 +424,18 @@ static int list_item(const char *name)
column_width = 0;
while ((entry = readdir(dir)) != NULL) {
short w = strlen(entry->d_name);
#ifdef BB_FEATURE_LS_SORTFILES
const char *en = entry->d_name;
if (en[0] == '.') {
if (!en[1] || (en[1] == '.' && !en[2])) { /* . or .. */
if (!(opts & DISP_DOT))
continue;
} else if (!(opts & DISP_HIDDEN))
continue;
}
nfiles++; /* count how many files there will be */
#endif
if (column_width < w)
column_width = w;
@ -381,6 +448,12 @@ static int list_item(const char *name)
if (!dir)
goto listerr;
#endif
#endif
#ifdef BB_FEATURE_LS_SORTFILES
/* now that we know how many files there are
* allocate memory for an array to hold dnode pointers
*/
dnp= (struct dnode **)calloc((size_t)nfiles, (size_t)(sizeof(struct dnode *)));
#endif
/* List the contents */
@ -402,11 +475,24 @@ static int list_item(const char *name)
}
/* FIXME: avoid stat if not required */
strcpy(fnend, entry->d_name);
#ifdef BB_FEATURE_LS_SORTFILES
/* allocate memory for a node and memory for the file name */
cur= (struct dnode *)malloc(sizeof(struct dnode));
cur->fullname= strcpy((char *)malloc(strlen(fullname)+1), fullname);
cur->name= cur->fullname + (int)(fnend - fullname) ;
lstat(fullname, &cur->dstat); /* get file stat info into node */
dnp[ni++]= cur; /* save pointer to node in array */
#else
if (lstat(fullname, &info))
goto direrr; /* (shouldn't fail) */
list_single(entry->d_name, &info, fullname);
#endif
}
closedir(dir);
#ifdef BB_FEATURE_LS_SORTFILES
shellsort(dnp, nfiles);
showdnodes(dnp, nfiles);
#endif
if (opts & DISP_DIRNAME) { /* separate the directory */
if (column) {