mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-11-25 04:39:48 +00:00
Correct column width for tab completion and ls
This commit is contained in:
Glenn L McGrath
parent
58c708af23
commit
4d00129d0f
196
coreutils/ls.c
196
coreutils/ls.c
@ -43,11 +43,9 @@
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enum {
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TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
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COLUMN_WIDTH = 14, /* default if AUTOWIDTH not defined */
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COLUMN_GAP = 2, /* includes the file type char */
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};
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/************************************************************************/
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#include <sys/types.h>
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@ -167,7 +165,7 @@ struct dnode { /* the basic node */
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};
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typedef struct dnode dnode_t;
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static struct dnode **list_dir(char *);
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static struct dnode **list_dir(const char *);
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static struct dnode **dnalloc(int);
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static int list_single(struct dnode *);
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@ -186,14 +184,12 @@ static unsigned int time_fmt;
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static unsigned int follow_links = FALSE;
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#endif
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static unsigned short column = 0;
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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static unsigned short terminal_width = TERMINAL_WIDTH;
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static unsigned short column_width = COLUMN_WIDTH;
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static unsigned short tabstops = COLUMN_GAP;
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#else
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static unsigned short column_width = COLUMN_WIDTH;
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#define tabstops COLUMN_GAP
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#define terminal_width TERMINAL_WIDTH
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#endif
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static int status = EXIT_SUCCESS;
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@ -202,35 +198,31 @@ static int status = EXIT_SUCCESS;
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static unsigned long ls_disp_hr = 0;
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#endif
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static int my_stat(struct dnode *cur)
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static struct dnode *my_stat(char *fullname, char *name)
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{
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struct stat dstat;
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struct dnode *cur;
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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if (follow_links) {
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if (stat(cur->fullname, &cur->dstat)) {
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perror_msg("%s", cur->fullname);
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if (stat(fullname, &dstat)) {
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perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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free(cur->fullname);
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free(cur);
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return -1;
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return 0;
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}
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} else
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#endif
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if (lstat(cur->fullname, &cur->dstat)) {
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perror_msg("%s", cur->fullname);
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if (lstat(fullname, &dstat)) {
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perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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free(cur->fullname);
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free(cur);
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return -1;
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}
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return 0;
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}
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static void newline(void)
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{
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if (column > 0) {
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putchar('\n');
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column = 0;
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}
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cur = (struct dnode *) xmalloc(sizeof(struct dnode));
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cur->fullname = fullname;
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cur->name = name;
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cur->dstat = dstat;
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return cur;
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}
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/*----------------------------------------------------------------------*/
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@ -239,7 +231,6 @@ static char fgcolor(mode_t mode)
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{
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/* Check wheter the file is existing (if so, color it red!) */
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if (errno == ENOENT) {
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errno = 0;
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return '\037';
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}
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if (LIST_EXEC && S_ISREG(mode)
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@ -271,24 +262,6 @@ static char append_char(mode_t mode)
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}
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#endif
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/*----------------------------------------------------------------------*/
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static void nexttabstop(void)
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{
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static short nexttab = 0;
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int n = 0;
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if (column > 0) {
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n = nexttab - column;
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if (n < 1)
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n = 1;
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while (n--) {
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putchar(' ');
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column++;
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}
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}
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nexttab = column + column_width + COLUMN_GAP;
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}
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/*----------------------------------------------------------------------*/
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static int is_subdir(struct dnode *dn)
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{
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@ -437,7 +410,11 @@ static int sortcmp(struct dnode *d1, struct dnode *d2)
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cmp = 1;
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if (dif == 0) {
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/* sort by name- may be a tie_breaker for time or size cmp */
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#ifdef CONFIG_LOCALE_SUPPORT
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dif = strcoll(d1->name, d2->name);
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#else
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dif = strcmp(d1->name, d2->name);
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#endif
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if (dif > 0)
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cmp = 1;
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if (dif < 0)
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@ -479,46 +456,40 @@ static void shellsort(struct dnode **dn, int size)
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static void showfiles(struct dnode **dn, int nfiles)
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{
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int i, ncols, nrows, row, nc;
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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int len;
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#endif
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int column = 0;
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int nexttab = 0;
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int column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
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if (dn == NULL || nfiles < 1)
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return;
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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switch (style_fmt) {
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case STYLE_LONG: /* one record per line, extended info */
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case STYLE_SINGLE: /* one record per line */
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ncols = 1;
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break;
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default:
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/* find the longest file name- use that as the column width */
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column_width = 0;
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for (i = 0; i < nfiles; i++) {
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len = strlen(dn[i]->name) +
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int len = strlen(dn[i]->name) +
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((list_fmt & LIST_INO) ? 8 : 0) +
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((list_fmt & LIST_BLOCKS) ? 5 : 0);
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if (column_width < len)
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column_width = len;
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}
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ncols = (int) (terminal_width / (column_width + COLUMN_GAP));
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#else
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ncols = TERMINAL_WIDTH;
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#endif
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switch (style_fmt) {
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case STYLE_LONG: /* one record per line, extended info */
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case STYLE_SINGLE: /* one record per line */
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ncols = 1;
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break;
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column_width += tabstops;
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ncols = (int) (terminal_width / column_width);
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}
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if (ncols > 1) {
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nrows = nfiles / ncols;
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if ((nrows * ncols) < nfiles)
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nrows++; /* round up fractionals */
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} else {
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nrows = nfiles;
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ncols = 1;
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}
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if ((nrows * ncols) < nfiles)
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nrows++; /* round up fractionals */
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if (nrows > nfiles)
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nrows = nfiles;
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for (row = 0; row < nrows; row++) {
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for (nc = 0; nc < ncols; nc++) {
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/* reach into the array based on the column and row */
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@ -526,11 +497,19 @@ static void showfiles(struct dnode **dn, int nfiles)
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if (disp_opts & DISP_ROWS)
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i = (row * ncols) + nc; /* display across row */
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if (i < nfiles) {
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nexttabstop();
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list_single(dn[i]);
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if (column > 0) {
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nexttab -= column;
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while (nexttab--) {
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putchar(' ');
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column++;
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}
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}
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nexttab = column + column_width;
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column += list_single(dn[i]);
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}
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newline();
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}
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putchar('\n');
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column = 0;
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}
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}
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@ -580,7 +559,7 @@ static void showdirs(struct dnode **dn, int ndirs)
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}
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/*----------------------------------------------------------------------*/
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static struct dnode **list_dir(char *path)
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static struct dnode **list_dir(const char *path)
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{
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struct dnode *dn, *cur, **dnp;
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struct dirent *entry;
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@ -599,18 +578,21 @@ static struct dnode **list_dir(char *path)
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return (NULL); /* could not open the dir */
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}
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while ((entry = readdir(dir)) != NULL) {
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char *fullname;
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/* are we going to list the file- it may be . or .. or a hidden file */
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if ((strcmp(entry->d_name, ".") == 0) && !(disp_opts & DISP_DOT))
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if (entry->d_name[0] == '.') {
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if ((entry->d_name[1] == 0 || (
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entry->d_name[1] == '.'
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&& entry->d_name[2] == 0))
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&& !(disp_opts & DISP_DOT))
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continue;
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if ((strcmp(entry->d_name, "..") == 0) && !(disp_opts & DISP_DOT))
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if (!(disp_opts & DISP_HIDDEN))
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continue;
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if ((entry->d_name[0] == '.') && !(disp_opts & DISP_HIDDEN))
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continue;
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cur = (struct dnode *) xmalloc(sizeof(struct dnode));
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cur->fullname = concat_path_file(path, entry->d_name);
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cur->name = cur->fullname +
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(strlen(cur->fullname) - strlen(entry->d_name));
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if (my_stat(cur))
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}
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fullname = concat_path_file(path, entry->d_name);
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cur = my_stat(fullname, strrchr(fullname, '/') + 1);
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if (!cur)
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continue;
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cur->next = dn;
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dn = cur;
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@ -621,7 +603,7 @@ static struct dnode **list_dir(char *path)
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/* now that we know how many files there are
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** allocate memory for an array to hold dnode pointers
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*/
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if (nfiles < 1)
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if (dn == NULL)
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return (NULL);
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dnp = dnalloc(nfiles);
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for (i = 0, cur = dn; i < nfiles; i++) {
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@ -635,10 +617,10 @@ static struct dnode **list_dir(char *path)
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/*----------------------------------------------------------------------*/
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static int list_single(struct dnode *dn)
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{
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int i;
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int i, column = 0;
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#ifdef CONFIG_FEATURE_LS_USERNAME
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char scratch[BUFSIZ + 1];
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char scratch[16];
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#endif
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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char *filetime;
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@ -649,7 +631,7 @@ static int list_single(struct dnode *dn)
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char append;
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#endif
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if (dn == NULL || dn->fullname == NULL)
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if (dn->fullname == NULL)
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return (0);
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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@ -667,29 +649,20 @@ static int list_single(struct dnode *dn)
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for (i = 0; i <= 31; i++) {
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switch (list_fmt & (1 << i)) {
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case LIST_INO:
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printf("%7ld ", (long int) dn->dstat.st_ino);
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column += 8;
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column += printf("%7ld ", (long int) dn->dstat.st_ino);
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break;
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case LIST_BLOCKS:
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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printf("%6s ", make_human_readable_str(dn->dstat.st_blocks >> 1,
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KILOBYTE, (ls_disp_hr == TRUE) ? 0 : KILOBYTE));
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#else
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#if _FILE_OFFSET_BITS == 64
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printf("%4lld ", dn->dstat.st_blocks >> 1);
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column += printf("%4lld ", dn->dstat.st_blocks >> 1);
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#else
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printf("%4ld ", dn->dstat.st_blocks >> 1);
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column += printf("%4ld ", dn->dstat.st_blocks >> 1);
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#endif
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#endif
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column += 5;
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break;
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case LIST_MODEBITS:
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printf("%-10s ", (char *) mode_string(dn->dstat.st_mode));
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column += 10;
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column += printf("%-10s ", (char *) mode_string(dn->dstat.st_mode));
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break;
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case LIST_NLINKS:
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printf("%4ld ", (long) dn->dstat.st_nlink);
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column += 10;
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column += printf("%4ld ", (long) dn->dstat.st_nlink);
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break;
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case LIST_ID_NAME:
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#ifdef CONFIG_FEATURE_LS_USERNAME
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@ -701,29 +674,28 @@ static int list_single(struct dnode *dn)
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break;
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#endif
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case LIST_ID_NUMERIC:
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printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
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column += 17;
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column += printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
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break;
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case LIST_SIZE:
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case LIST_DEV:
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if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
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printf("%4d, %3d ", (int) MAJOR(dn->dstat.st_rdev),
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column += printf("%4d, %3d ", (int) MAJOR(dn->dstat.st_rdev),
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(int) MINOR(dn->dstat.st_rdev));
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} else {
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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if (ls_disp_hr == TRUE) {
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printf("%8s ", make_human_readable_str(dn->dstat.st_size, 1, 0));
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column += printf("%9s ",
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make_human_readable_str(dn->dstat.st_size, 1, 0));
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} else
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#endif
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{
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#if _FILE_OFFSET_BITS == 64
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printf("%9lld ", (long long) dn->dstat.st_size);
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column += printf("%9lld ", (long long) dn->dstat.st_size);
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#else
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printf("%9ld ", dn->dstat.st_size);
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column += printf("%9ld ", dn->dstat.st_size);
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#endif
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}
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}
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column += 10;
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break;
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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case LIST_FULLTIME:
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@ -752,13 +724,12 @@ static int list_single(struct dnode *dn)
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fgcolor(info.st_mode));
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}
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#endif
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printf("%s", dn->name);
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column += printf("%s", dn->name);
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#ifdef CONFIG_FEATURE_LS_COLOR
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if (show_color) {
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printf("\033[0m");
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}
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#endif
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column += strlen(dn->name);
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break;
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case LIST_SYMLINK:
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if (S_ISLNK(dn->dstat.st_mode)) {
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@ -778,13 +749,12 @@ static int list_single(struct dnode *dn)
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fgcolor(info.st_mode));
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}
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#endif
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printf("%s", lpath);
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column += printf("%s", lpath) + 4;
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#ifdef CONFIG_FEATURE_LS_COLOR
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if (show_color) {
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printf("\033[0m");
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}
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#endif
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column += strlen(lpath) + 4;
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free(lpath);
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}
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}
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@ -800,7 +770,7 @@ static int list_single(struct dnode *dn)
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}
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}
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return (0);
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return column;
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}
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/*----------------------------------------------------------------------*/
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@ -830,8 +800,6 @@ extern int ls_main(int argc, char **argv)
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#endif
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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ioctl(fileno(stdout), TIOCGWINSZ, &win);
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if (win.ws_row > 4)
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column_width = win.ws_row - 2;
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if (win.ws_col > 0)
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terminal_width = win.ws_col - 1;
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#endif
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@ -1025,10 +993,10 @@ extern int ls_main(int argc, char **argv)
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/* stuff the command line file names into an dnode array */
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dn = NULL;
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for (oi = 0; oi < ac; oi++) {
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cur = (struct dnode *) xmalloc(sizeof(struct dnode));
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cur->fullname = xstrdup(av[oi]);
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cur->name = cur->fullname;
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if (my_stat(cur))
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char *fullname = xstrdup(av[oi]);
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cur = my_stat(fullname, fullname);
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if (!cur)
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continue;
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cur->next = dn;
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dn = cur;
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@ -951,6 +951,44 @@ static int find_match(char *matchBuf, int *len_with_quotes)
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return command_mode;
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}
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/*
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display by column original ideas from ls applet,
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very optimize by my :)
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*/
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static void showfiles(char **matches, int nfiles)
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{
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int ncols, row;
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int column_width = 0;
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int nrows = nfiles;
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/* find the longest file name- use that as the column width */
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for (row = 0; row < nrows; row++) {
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int l = strlen(matches[row]);
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if (column_width < l)
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column_width = l;
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}
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column_width += 2; /* min space for columns */
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ncols = cmdedit_termw / column_width;
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if (ncols > 1) {
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nrows /= ncols;
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if(nfiles % ncols)
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nrows++; /* round up fractionals */
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column_width = -column_width; /* for printf("%-Ns", ...); */
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} else {
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ncols = 1;
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}
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for (row = 0; row < nrows; row++) {
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int n = row;
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int nc;
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for(nc = 1; nc < ncols && n+nrows < nfiles; n += nrows, nc++)
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printf("%*s", column_width, matches[n]);
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printf("%s\n", matches[n]);
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}
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}
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static void input_tab(int *lastWasTab)
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{
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@ -1078,29 +1116,11 @@ static void input_tab(int *lastWasTab)
|
||||
* just hit TAB again, print a list of all the
|
||||
* available choices... */
|
||||
if (matches && num_matches > 0) {
|
||||
int i, col, l;
|
||||
int sav_cursor = cursor; /* change goto_new_line() */
|
||||
|
||||
/* Go to the next line */
|
||||
goto_new_line();
|
||||
for (i = 0, col = 0; i < num_matches; i++) {
|
||||
l = strlen(matches[i]);
|
||||
if (l < 14)
|
||||
l = 14;
|
||||
printf("%-14s ", matches[i]);
|
||||
col+=l;
|
||||
if ((l += 2) > 16)
|
||||
while (l % 16) {
|
||||
putchar(' ');
|
||||
l++;
|
||||
}
|
||||
if (col > (cmdedit_termw-l-l) && matches[i + 1] != NULL) {
|
||||
putchar('\n');
|
||||
col = 0;
|
||||
}
|
||||
}
|
||||
/* Go to the next line and rewrite */
|
||||
putchar('\n');
|
||||
showfiles(matches, num_matches);
|
||||
redraw(0, len - sav_cursor);
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user