1 files changed, 51 insertions, 0 deletions
diff --git a/scraps/test.c b/scraps/test.c
new file mode 100644
index 0000000..33c1ef3
--- /dev/null
+++ b/scraps/test.c
@@ -0,0 +1,51 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <regex.h>
+#include <sys/wait.h>
+#include "src/strings.h"
+
+#define SYS_ERR(msg) { \
+        perror(msg);   \
+        exit(errno);   \
+    }
+
+void read_file(struct String *str, size_t size, FILE *file)
+{
+    char c;
+    for (size_t read = 0; read < size && (c = fgetc(file)) != EOF; read++) {
+        append_char(c, str);
+    }
+}
+
+char read_status(pid_t pid)
+{
+    char path[128] = {0};
+    sprintf(path, "/proc/%d/status", pid);
+
+    struct String string = {0};
+    struct String *str = &string;
+
+    init_string(str, 4096);
+    FILE *h_status = fopen(path, "rb");
+    read_file(str, 4096, h_status);
+
+    // find status line, grab value after colon and spaces
+    regex_t regex;
+    int err;
+    regmatch_t pmatch[2];
+    if (regcomp(&regex, "State:\\W+([A-Z])", REG_EXTENDED) != 0)
+        SYS_ERR("regex compilation error");
+    err = regexec(&regex, str->data, 2, pmatch, 0);
+    regfree(&regex);
+    if (err) SYS_ERR("failed to find regex match in /proc/[PID]/status file");
+    // printf("%s\n", str->data + pmatch[1].rm_so);
+    return *(str->data + pmatch[1].rm_so);
+}
+
+int main()
+{
+    char x = read_status(2909);
+    printf("%c\n", x);
+}