1 files changed, 61 insertions, 0 deletions
diff --git a/config.c b/config.c
new file mode 100644
index 0000000..1f209c6
--- /dev/null
+++ b/config.c
@@ -0,0 +1,61 @@
+#include "config.h"
+
+void get_help() {
+  puts("Usage: \n\
+  -d, --dead       Print list of dead file descriptors (deleted but still open)\n\
+  -i, --inodes     Print list of inode file descriptors\n\
+  -l, --live       Print list of live file descriptors (open and existing)\n\
+  -p, --pipes      Print list of pipe file descriptors\n\
+  -s, --sockets    Print list of socket file descriptors\n\
+\n\
+  -n, --no-stats   Hide file descriptor statistics\n\
+  -sf, --sizefd    Show total size of dead and live file descriptors\n\
+  -sd, --sizedead  Show total size of dead file descriptors\n\
+  -sl, --sizelive  Show total size of live file descriptors\n\
+  --truncate-dead  Truncate dead file descriptors\n\
+  -h, --help       Print this help text\n\
+");
+}
+
+int config_from_argv(struct config* c, int argc, char* argv[]) {
+  int i = 1;
+  while(i < argc) {
+    if(strcmp(argv[i], "-d") == 0 || strcmp(argv[i], "--dead") == 0) {
+      c->dead = 1;
+    } else if(strcmp(argv[i], "--truncate-dead") == 0) {
+      c->truncate_dead = 1;
+    } else if(strcmp(argv[i], "-l") == 0 || strcmp(argv[i], "--live") == 0) {
+      c->live = 1;
+    } else if(strcmp(argv[i], "-s") == 0 || strcmp(argv[i], "--sockets") == 0) {
+      c->sockets = 1;
+    } else if(strcmp(argv[i], "-i") == 0 || strcmp(argv[i], "--inodes") == 0) {
+      c->inodes = 1;
+    } else if(strcmp(argv[i], "-p") == 0 || strcmp(argv[i], "--pipes") == 0) {
+      c->pipes = 1;
+    } else if(strcmp(argv[i], "-n") == 0 || strcmp(argv[i], "--no-stats") == 0) {
+      c->showstats = 0;
+    } else if(strcmp(argv[i], "-sfd") == 0 || strcmp(argv[i], "--sizefd") == 0) {
+      c->showsizefd = 1;
+    } else if(strcmp(argv[i], "-sd") == 0 || strcmp(argv[i], "--sizedead") == 0) {
+      c->showsizedead = 1;
+    } else if(strcmp(argv[i], "-sl") == 0 || strcmp(argv[i], "--sizelive") == 0) {
+      c->showsizelive = 1;
+    } else if(strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
+      get_help();
+      return 1;
+    } else if(argv[i][0] == '-') {
+      fprintf(stderr, "Unknown argument \"%s\"\n", argv[i]);
+      return 1;
+    } else {
+      c->pid = strtol(argv[i], NULL, 10);
+    }
+
+    i++;
+  }
+
+  if(c->pid == -1) {
+    fprintf(stderr, "Must specify valid pid\n");
+    return 2;
+  }
+  return 0;
+}