1 files changed, 70 insertions, 0 deletions
diff --git a/libcoopgamma_get_crtcs_recv.c b/libcoopgamma_get_crtcs_recv.c
new file mode 100644
index 0000000..16e9ba5
--- /dev/null
+++ b/libcoopgamma_get_crtcs_recv.c
@@ -0,0 +1,70 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+/**
+ * List all available CRTC:s, receive response part
+ * 
+ * @param   ctx    The state of the library, must be connected
+ * @param   async  Information about the request
+ * @return         A `NULL`-terminated list of names. You should only free
+ *                 the outer pointer, inner pointers are subpointers of the
+ *                 outer pointer and cannot be freed. `NULL` on error, in
+ *                 which case `ctx->error` (rather than `errno`) is read
+ *                 for information about the error.
+ */
+char **
+libcoopgamma_get_crtcs_recv(libcoopgamma_context_t *restrict ctx, libcoopgamma_async_context_t *restrict async)
+{
+	char *line;
+	char *payload;
+	char *end;
+	int command_ok = 0;
+	size_t i, n, lines, len, length;
+	char **rc;
+
+	if (libcoopgamma_check_error__(ctx, async))
+		return NULL;
+
+	for (;;) {
+		line = libcoopgamma_next_header__(ctx);
+		if (!*line)
+			break;
+		else if (!strcmp(line, "Command: crtc-enumeration"))
+			command_ok = 1;
+	}
+
+	payload = libcoopgamma_next_payload__(ctx, &n);
+
+	if (!command_ok || (n > 0 && payload[n - 1U] != '\n')) {
+		errno = EBADMSG;
+		copy_errno(ctx);
+		return NULL;
+	}
+
+	line = payload;
+	end = &payload[n];
+	lines = length = 0;
+	while (line != end) {
+		lines += 1U;
+		length += len = (size_t)(&strchr(line, '\n')[1U] - line);
+		line += len;
+		line[-1] = '\0';
+	}
+
+	rc = malloc((lines + 1U) * sizeof(char *) + length);
+	if (!rc) {
+		copy_errno(ctx);
+		return NULL;
+	}
+
+	line = ((char *)rc) + (lines + 1U) * sizeof(char *);
+	memcpy(line, payload, length);
+	rc[lines] = NULL;
+	for (i = 0; i < lines; i++) {
+		rc[i] = line;
+		line = &strchr(line, '\0')[1U];
+	}
+
+	return rc;
+}