Add -n,--noself option

This will filter out the pid of the current `psre` process to avoid
needed to do something like `grep -v` when doing things like bulk
killing processes (which wouldn't work anyways if no cmdline is
printed, which is default).

1 files changed, 9 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 2891623..64bd71d 100644
--- a/src/main.c
+++ b/src/main.c
@@ -19,9 +19,11 @@
 #include <string.h>
 #include <sys/types.h>
 #include <dirent.h>
+#include <unistd.h>
 
 struct config {
   int print_cmdline;
+  int no_self;
   const char* regex;
 };
 
@@ -77,6 +79,9 @@ int pid_search(struct config* c) {
     read_cmdline(pathbuf, cmdbuf, 512);
 
     if(re_match(cmdbuf, (char*) c->regex) == 0) {
+      if(getpid() == pid && c->no_self == 1)
+        continue;
+
       fputs(ent->d_name, stdout);
       if(c->print_cmdline) {
         fputc('\t', stdout);
@@ -96,6 +101,7 @@ void gethelp() {
   "  psre [options] regex\n\n"
   "Options:\n"
   "  -c,--cmdline   Print cmdline with each matching pid\n"
+  "  -n,--noself    Exclude current psre process from output\n"
   "  -h,--help      Print this helptext\n"
   );
 }
@@ -103,11 +109,14 @@ void gethelp() {
 int parseargs(struct config* c, int argc, char* argv[]) {
   int i = 1;
   c->print_cmdline = 0;
+  c->no_self = 0;
   c->regex = ".*";
 
   while(i < argc) {
     if(strcmp(argv[i], "-c") == 0 || strcmp(argv[i], "--cmdline") == 0) {
       c->print_cmdline = 1;
+    } else if(strcmp(argv[i], "-n") == 0 || strcmp(argv[i], "--noself") == 0) {
+      c->no_self = 1;
     } else if(strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
       gethelp();
       return -1;