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-rw-r--r--toys/pending/ps.c166
1 files changed, 69 insertions, 97 deletions
diff --git a/toys/pending/ps.c b/toys/pending/ps.c
index 6b036109..341bfdfc 100644
--- a/toys/pending/ps.c
+++ b/toys/pending/ps.c
@@ -119,14 +119,6 @@ GLOBALS(
long long ticks;
)
-/*
- l l fl a fl fl l l l l l f a a a
- F S UID PID PPID C PRI NI ADDR SZ WCHAN STIME TTY TIME CMD
- ruser user rgroup group pid ppid pgid pcpu vsz nice etime time tty comm args
-
- man page: F flags mean...
-*/
-
struct strawberry {
struct strawberry *next, *prev;
short which, len;
@@ -368,11 +360,10 @@ static int do_ps(struct dirtree *new)
return 0;
}
-void ps_main(void)
+void parse_o(char *ooo)
{
struct strawberry *field;
- // Octal output code followed by header name
- char *typos[] = {
+ char *width, *type, *title, *end, *arg = ooo, *s, *typos[] = {
"F", "S", "UID", "PID", "PPID", "C", "PRI", "NI", "ADDR", "SZ",
"WCHAN", "STIME", "TTY", "TIME", "CMD", "COMMAND", "ELAPSED", "GROUP",
"%CPU", "PGID", "RGROUP", "RUSER", "USER", "VSZ", "RSS", "\xff",
@@ -382,6 +373,67 @@ void ps_main(void)
-6,5,-8,8,-27,-27,11,-8,
4,5,-8,-8,-8,6,5,-5,
8,-5,4,4};
+ int i, j, k, length;
+
+ // Set title, length of title, type, end of type, and display width
+ while ((type = comma_iterate(&arg, &length))) {
+ // Chip off =display_name
+ if ((end = strchr(type, '=')) && length>(end-type)) {
+ title = end+1;
+ length -= (end-type)+1;
+ } else {
+ end = type+length;
+ title = 0;
+ }
+
+ // Chip off :display_width
+ if ((width = strchr(type, ':')) && width<end) {
+ if (!title) length = width-type;
+ } else width = 0;
+
+ // Allocate structure, copy title
+ field = xzalloc(sizeof(struct strawberry)+(length+1)*!!title);
+ if (title) {
+ memcpy(field->title = field->forever, title, length);
+ field->title[field->len = length] = 0;
+ }
+
+ if (width) {
+ field->len = strtol(++width, &title, 10);
+ if (!isdigit(*width) || title != end)
+ error_exit("bad : in -o %s@%ld", ooo, title-ooo);
+ end = --width;
+ }
+
+ // Find type
+ for (i = 0; i<ARRAY_LEN(typos); i++) {
+ field->which = i;
+ for (j = 0; j<2; j++) {
+ if (!j) s = typos[i];
+ // posix requires alternate names for some fields
+ else if (-1==(k = stridx((char []){7,14,15,16,18,23,22,0}, i)))
+ continue;
+ else s = ((char *[]){"NICE","ARGS","COMM","ETIME","PCPU",
+ "VSIZE","UNAME"})[k];
+
+ if (!strncasecmp(type, s, end-type) && strlen(s)==end-type) break;
+ }
+ if (j!=2) break;
+ }
+ if (i==ARRAY_LEN(typos)) error_exit("bad -o %.*s", end-type, type);
+ if (!field->title) field->title = typos[field->which];
+ if (!field->len) field->len = widths[field->which];
+ else if (widths[field->which]<0) field->len *= -1;
+ dlist_add_nomalloc((void *)&TT.fields, (void *)field);
+
+ // Print padded header.
+ printf(" %*s" + (field == TT.fields), field->len, field->title);
+ TT.bits |= (i = 1<<field->which);
+ }
+}
+
+void ps_main(void)
+{
int i;
TT.width = 99999;
@@ -456,98 +508,18 @@ void ps_main(void)
// Manual field selection via -o
if (toys.optflags&FLAG_o) {
struct arg_list *ol;
- int length;
- for (ol = TT.o; ol; ol = ol->next) {
- char *width, *type, *title, *end, *arg = ol->arg;
-
- // Set title, length of title, type, end of type, and display width
- while ((type = comma_iterate(&arg, &length))) {
- // Chip off =display_name
- if ((end = strchr(type, '=')) && length>(end-type)) {
- title = end+1;
- length -= (end-type)+1;
- } else {
- end = type+length;
- title = 0;
- }
-
- // Chip off :display_width
- if ((width = strchr(type, ':')) && width<end) {
- if (!title) length = width-type;
- } else width = 0;
-
- // Allocate structure, copy title
- field = xzalloc(sizeof(struct strawberry)+(length+1)*!!title);
- if (title) {
- memcpy(field->title = field->forever, title, length);
- field->title[field->len = length] = 0;
- }
-
- if (width) {
- field->len = strtol(++width, &title, 10);
- if (!isdigit(*width) || title != end)
- error_exit("bad : in -o %s@%ld", ol->arg, title-ol->arg);
- end = --width;
- }
-
- // Find type
- for (i = 0; i<ARRAY_LEN(typos); i++) {
- int j, k;
- char *s;
-
- field->which = i;
- for (j = 0; j<2; j++) {
- if (!j) s = typos[i];
- // posix requires alternate names for some fields
- else if (-1==(k = stridx((char []){7,14,15,16,18,23,22,0}, i)))
- continue;
- else s = ((char *[]){"NICE","ARGS","COMM","ETIME","PCPU",
- "VSIZE","UNAME"})[k];
-
- if (!strncasecmp(type, s, end-type) && strlen(s)==end-type) break;
- }
- if (j!=2) break;
- }
- if (i==ARRAY_LEN(typos)) error_exit("bad -o %.*s", end-type, type);
- if (!field->title) field->title = typos[field->which];
- if (!field->len) field->len = widths[field->which];
- else if (widths[field->which]<0) field->len *= -1;
- dlist_add_nomalloc((void *)&TT.fields, (void *)field);
- }
- }
+ for (ol = TT.o; ol; ol = ol->next) parse_o(ol->arg);
// Default fields (also with -f and -l)
} else {
- unsigned short def = 0x7008;
-
- if (toys.optflags&FLAG_f) def = 0x783c;
- if (toys.optflags&FLAG_l) def = 0x77ff;
-
- // order of fields[] matches posix STDOUT section, so add enabled XSI
- // defaults according to bitmask
- for (i=0; def>>i; i++) {
- if (!((def>>i)&1)) continue;
-
- field = xmalloc(sizeof(struct strawberry)+strlen(typos[i])+1);
- field->which = i;
- field->len = widths[i];
- strcpy(field->title = field->forever, typos[i]);
- dlist_add_nomalloc((void *)&TT.fields, (void *)field);
- }
+ if (toys.optflags&FLAG_f)
+ parse_o("USER:8=UID,PID,PPID,C,STIME,TTY,TIME,CMD");
+ else if (toys.optflags&FLAG_l)
+ parse_o("F,S,UID,PID,PPID,C,PRI,NI,ADDR,SZ,WCHAN,TTY,TIME,CMD");
+ else parse_o("PID,TTY,TIME,CMD");
}
dlist_terminate(TT.fields);
-
- // Print padded headers. (Numbers are right justified, everyting else left.
- // time and pcpu count as numbers, tty does not)
- for (field = TT.fields; field; field = field->next) {
- printf(" %*s" + (field == TT.fields), field->len, field->title);
-
- // -f prints USER but calls it UID (but "ps -o uid -f" is numeric...?)
- if ((toys.optflags&(FLAG_f|FLAG_o))==FLAG_f && field->which==2)
- field->which = 22;
- TT.bits |= (i = 1<<field->which);
- }
xputc('\n');
dirtree_read("/proc", do_ps);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 04:24:51 +0000