Parse command line args for swaymsg

1 files changed, 39 insertions, 0 deletions

diff --git a/common/readline.c b/common/readline.c
new file mode 100644
index 00000000..e75b183f
--- /dev/null
+++ b/common/readline.c
@@ -0,0 +1,39 @@
+#include "readline.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+char *read_line(FILE *file) {
+        int length = 0, size = 128;
+        char *string = malloc(size);
+        if (!string) {
+                return NULL;
+        }
+        while (1) {
+                int c = getc(file);
+                if (c == EOF || c == '\n' || c == '\0') {
+                        break;
+                }
+                if (c == '\r') {
+                        continue;
+                }
+                if (length == size) {
+                        char *new_string = realloc(string, size *= 2);
+                        if (!new_string) {
+                                free(string);
+                                return NULL;
+                        }
+                        string = new_string;
+                }
+                string[length++] = c;
+        }
+        if (length + 1 == size) {
+                char *new_string = realloc(string, length + 1);
+                if (!new_string) {
+                        free(string);
+                        return NULL;
+                }
+                string = new_string;
+        }
+        string[length] = '\0';
+        return string;
+}