Merge branch 'master' into iwyu

1 files changed, 36 insertions, 0 deletions

diff --git a/src/print_help.cpp b/src/print_help.cpp
new file mode 100644
index 00000000..da401134
--- /dev/null
+++ b/src/print_help.cpp
@@ -0,0 +1,36 @@
+
+/** \file print_help.c
+  Print help message for the specified command
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stddef.h>
+#include <sys/types.h>
+
+#include "print_help.h"
+
+#define CMD_LEN 1024
+
+#define HELP_ERR "Could not show help message\n"
+
+/* defined in common.h */
+ssize_t write_loop(int fd, const char *buff, size_t count);
+
+
+void print_help(const char *c, int fd)
+{
+    char cmd[ CMD_LEN];
+    int printed = snprintf(cmd, CMD_LEN, "fish -c '__fish_print_help %s >&%d'", c, fd);
+
+    if (printed < CMD_LEN)
+    {
+        if ((system(cmd) == -1))
+        {
+            write_loop(2, HELP_ERR, strlen(HELP_ERR));
+        }
+
+    }
+
+}