c rewrite

1 files changed, 42 insertions, 0 deletions

diff --git a/src/cmd_out.c b/src/cmd_out.c
new file mode 100644
index 0000000..b800149
--- /dev/null
+++ b/src/cmd_out.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "cmd_out.h"
+
+char* cmd_out(const char *cmd) {
+    FILE *pipe = popen(cmd, "r");
+    if (!pipe) {
+        return strdup("");
+    }
+
+    char buffer[128];
+    size_t total_size = 0;
+    size_t capacity = 256;
+    char *result = malloc(capacity);
+    if (!result) {
+        pclose(pipe);
+        return strdup("");
+    }
+    result[0] = '\0';
+
+    while (fgets(buffer, sizeof(buffer), pipe) != NULL) {
+        size_t len = strlen(buffer);
+        if (total_size + len + 1 > capacity) {
+            capacity *= 2;
+            char *new_result = realloc(result, capacity);
+            if (!new_result) {
+                free(result);
+                pclose(pipe);
+                return strdup("");
+            }
+            result = new_result;
+        }
+        strcat(result, buffer);
+        total_size += len;
+    }
+
+    pclose(pipe);
+    return result;
+}
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