From b4f53143b0e05fd3061cdf2e65e17a6a2904090b Mon Sep 17 00:00:00 2001
From: ridiculousfish <corydoras@ridiculousfish.com>
Date: Fri, 24 Jul 2015 00:50:58 -0700
Subject: Migrate source files into src/ directory

This change moves source files into a src/ directory,
and puts object files into an obj/ directory. The Makefile
and xcode project are updated accordingly.

Fixes #1866
---
 src/kill.cpp | 230 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 230 insertions(+)
 create mode 100644 src/kill.cpp

(limited to 'src/kill.cpp')

diff --git a/src/kill.cpp b/src/kill.cpp
new file mode 100644
index 00000000..0033ca2f
--- /dev/null
+++ b/src/kill.cpp
@@ -0,0 +1,230 @@
+/** \file kill.c
+  The killring.
+
+  Works like the killring in emacs and readline. The killring is cut
+  and paste with a memory of previous cuts. It supports integration
+  with the X clipboard.
+*/
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <wchar.h>
+#include <termios.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <algorithm>
+
+#include "fallback.h"
+#include "util.h"
+
+#include "wutil.h"
+#include "kill.h"
+#include "proc.h"
+#include "sanity.h"
+#include "common.h"
+#include "env.h"
+#include "exec.h"
+#include "path.h"
+
+/**
+   Maximum entries in killring
+*/
+#define KILL_MAX 8192
+
+/** Last kill string */
+//static ll_node_t *kill_last=0;
+
+/** Current kill string */
+//static ll_node_t *kill_current=0;
+
+/** Kill ring */
+typedef std::list<wcstring> kill_list_t;
+static kill_list_t kill_list;
+
+/**
+   Contents of the X clipboard, at last time we checked it
+*/
+static wcstring cut_buffer;
+
+/**
+   Test if the xsel command is installed.  Since this is called often,
+   cache the result.
+*/
+static int has_xsel()
+{
+    static signed char res=-1;
+    if (res < 0)
+    {
+        res = !! path_get_path(L"xsel", NULL);
+    }
+
+    return res;
+}
+
+void kill_add(const wcstring &str)
+{
+    ASSERT_IS_MAIN_THREAD();
+    if (str.empty())
+        return;
+
+    wcstring cmd;
+    wcstring escaped_str;
+    kill_list.push_front(str);
+
+    /*
+       Check to see if user has set the FISH_CLIPBOARD_CMD variable,
+       and, if so, use it instead of checking the display, etc.
+
+       I couldn't think of a safe way to allow overide of the echo
+       command too, so, the command used must accept the input via stdin.
+    */
+
+    const env_var_t clipboard_wstr = env_get_string(L"FISH_CLIPBOARD_CMD");
+    if (!clipboard_wstr.missing())
+    {
+        escaped_str = escape(str.c_str(), ESCAPE_ALL);
+        cmd.assign(L"echo -n ");
+        cmd.append(escaped_str);
+        cmd.append(clipboard_wstr);
+    }
+    else
+    {
+        /* This is for sending the kill to the X copy-and-paste buffer */
+        if (!has_xsel())
+        {
+            return;
+        }
+
+        const env_var_t disp_wstr = env_get_string(L"DISPLAY");
+        if (!disp_wstr.missing())
+        {
+            escaped_str = escape(str.c_str(), ESCAPE_ALL);
+            cmd.assign(L"echo -n ");
+            cmd.append(escaped_str);
+            cmd.append(L" | xsel -i -b");
+        }
+    }
+
+    if (! cmd.empty())
+    {
+        if (exec_subshell(cmd, false /* do not apply exit status */) == -1)
+        {
+            /*
+               Do nothing on failiure
+            */
+        }
+
+        cut_buffer = escaped_str;
+    }
+}
+
+/**
+   Remove first match for specified string from circular list
+*/
+static void kill_remove(const wcstring &s)
+{
+    ASSERT_IS_MAIN_THREAD();
+    kill_list_t::iterator iter = std::find(kill_list.begin(), kill_list.end(), s);
+    if (iter != kill_list.end())
+        kill_list.erase(iter);
+}
+
+
+
+void kill_replace(const wcstring &old, const wcstring &newv)
+{
+    kill_remove(old);
+    kill_add(newv);
+}
+
+const wchar_t *kill_yank_rotate()
+{
+    ASSERT_IS_MAIN_THREAD();
+    // Move the first element to the end
+    if (kill_list.empty())
+    {
+        return NULL;
+    }
+    else
+    {
+        kill_list.splice(kill_list.end(), kill_list, kill_list.begin());
+        return kill_list.front().c_str();
+    }
+}
+
+/**
+   Check the X clipboard. If it has been changed, add the new
+   clipboard contents to the fish killring.
+*/
+static void kill_check_x_buffer()
+{
+    if (!has_xsel())
+        return;
+
+    const env_var_t disp = env_get_string(L"DISPLAY");
+    if (! disp.missing())
+    {
+        size_t i;
+        wcstring cmd = L"xsel -t 500 -b";
+        wcstring new_cut_buffer=L"";
+        wcstring_list_t list;
+        if (exec_subshell(cmd, list, false /* do not apply exit status */) != -1)
+        {
+
+            for (i=0; i<list.size(); i++)
+            {
+                wcstring next_line = escape_string(list.at(i), 0);
+                if (i > 0) new_cut_buffer += L"\\n";
+                new_cut_buffer += next_line;
+            }
+
+            if (new_cut_buffer.size() > 0)
+            {
+                /*
+                  The buffer is inserted with backslash escapes,
+                  since we don't really like tabs, newlines,
+                  etc. anyway.
+                */
+
+                if (cut_buffer != new_cut_buffer)
+                {
+                    cut_buffer = new_cut_buffer;
+                    kill_list.push_front(new_cut_buffer);
+                }
+            }
+        }
+    }
+}
+
+
+const wchar_t *kill_yank()
+{
+    kill_check_x_buffer();
+    if (kill_list.empty())
+    {
+        return L"";
+    }
+    else
+    {
+        return kill_list.front().c_str();
+    }
+}
+
+void kill_sanity_check()
+{
+}
+
+void kill_init()
+{
+}
+
+void kill_destroy()
+{
+    cut_buffer.clear();
+}
+
-- 
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