core: add option `unicode` in command `/debug`

3 files changed, 113 insertions, 3 deletions

diff --git a/src/core/wee-command.c b/src/core/wee-command.c
index e7e3ddf64..5fb9201bb 100644
--- a/src/core/wee-command.c
+++ b/src/core/wee-command.c
@@ -1833,6 +1833,7 @@ COMMAND_CALLBACK(debug)
     struct t_config_option *ptr_option;
     struct t_weechat_plugin *ptr_plugin;
     struct timeval time_start, time_end;
+    char *result;
     int debug;
 
     /* make C compiler happy */
@@ -2025,6 +2026,18 @@ COMMAND_CALLBACK(debug)
         return WEECHAT_RC_OK;
     }
 
+    if (string_strcasecmp (argv[1], "unicode") == 0)
+    {
+        COMMAND_MIN_ARGS(3, "unicode");
+        result = eval_expression (argv_eol[2], NULL, NULL, NULL);
+        if (result)
+        {
+            debug_unicode_string (result);
+            free (result);
+        }
+        return WEECHAT_RC_OK;
+    }
+
     if (string_strcasecmp (argv[1], "windows") == 0)
     {
         debug_windows_tree ();
@@ -7653,7 +7666,8 @@ command_init ()
            "term|windows"
            " || mouse|cursor [verbose]"
            " || hdata [free]"
-           " || time <command>"),
+           " || time <command>"
+           " || unicode <string>"),
         N_("     list: list plugins with debug levels\n"
            "      set: set debug level for plugin\n"
            "   plugin: name of plugin (\"core\" for WeeChat core)\n"
@@ -7677,7 +7691,15 @@ command_init ()
            "     term: display infos about terminal\n"
            "  windows: display windows tree\n"
            "     time: measure time to execute a command or to send text to "
-           "the current buffer"),
+           "the current buffer\n"
+           "  unicode: display information about unicode chars in string "
+           "(evaluated, see /help eval)\n"
+           "\n"
+           "Examples:\n"
+           "  /debug set irc 1\n"
+           "  /debug mouse verbose\n"
+           "  /debug time /filter toggle\n"
+           "  /debug unicode ${chars:${\\u26C0}-${\\u26CF}}"),
         "list"
         " || set %(plugins_names)|" PLUGIN_CORE
         " || dump %(plugins_names)|" PLUGIN_CORE
@@ -7695,7 +7717,8 @@ command_init ()
         " || tags"
         " || term"
         " || windows"
-        " || time %(commands:/)",
+        " || time %(commands:/)"
+        " || unicode",
         &command_debug, NULL, NULL);
     hook_command (
         NULL, "eval",
diff --git a/src/core/wee-debug.c b/src/core/wee-debug.c
index 6a5038194..6c4145cdd 100644
--- a/src/core/wee-debug.c
+++ b/src/core/wee-debug.c
@@ -48,11 +48,13 @@
 #include "wee-log.h"
 #include "wee-proxy.h"
 #include "wee-string.h"
+#include "wee-utf8.h"
 #include "wee-util.h"
 #include "../gui/gui-bar.h"
 #include "../gui/gui-bar-item.h"
 #include "../gui/gui-buffer.h"
 #include "../gui/gui-chat.h"
+#include "../gui/gui-color.h"
 #include "../gui/gui-completion.h"
 #include "../gui/gui-filter.h"
 #include "../gui/gui-hotlist.h"
@@ -760,6 +762,90 @@ debug_display_time_elapsed (struct timeval *time1, struct timeval *time2,
 }
 
 /*
+ * Display information about a unicode codepoint.
+ */
+
+void
+debug_unicode_char (unsigned int codepoint)
+{
+    char utf8_char[5], hexa[64], *ptr_hexa;
+    wchar_t wstring[4+2];
+    int i, size, length_wcswidth;
+
+    utf8_int_string (codepoint, utf8_char);
+    size = strlen (utf8_char);
+
+    hexa[0] = '\0';
+    ptr_hexa = hexa;
+    for (i = 0; i < size; i++)
+    {
+        ptr_hexa[0] = '0';
+        ptr_hexa[1] = 'x';
+        ptr_hexa += 2;
+        string_base16_encode (utf8_char + i, 1, ptr_hexa);
+        ptr_hexa += 2;
+        if (i < size - 1)
+        {
+            ptr_hexa[0] = ' ';
+            ptr_hexa++;
+        }
+    }
+    ptr_hexa[0] = '\0';
+
+    length_wcswidth = -1;
+    if (mbstowcs (wstring, utf8_char, 1) != (size_t)(-1))
+        length_wcswidth = wcswidth (wstring, 1);
+
+    gui_chat_printf (NULL,
+                     "\t  \"%s\" (%u, U+%04X, %s): %d %s/%s %d, %d %s/%s %d, %d, %d",
+                     utf8_char,
+                     codepoint,
+                     codepoint,
+                     hexa,
+                     strlen (utf8_char),
+                     GUI_COLOR(GUI_COLOR_CHAT_DELIMITERS),
+                     GUI_COLOR(GUI_COLOR_CHAT),
+                     utf8_strlen (utf8_char),
+                     gui_chat_strlen (utf8_char),
+                     GUI_COLOR(GUI_COLOR_CHAT_DELIMITERS),
+                     GUI_COLOR(GUI_COLOR_CHAT),
+                     length_wcswidth,
+                     utf8_strlen_screen (utf8_char),
+                     gui_chat_strlen_screen (utf8_char));
+}
+
+/*
+ * Display information about all unicode chars of a string.
+ */
+
+void
+debug_unicode_string (const char *string)
+{
+    const char *ptr_string;
+    if (!string || !string[0])
+        return;
+
+    gui_chat_printf (NULL, "");
+    gui_chat_printf (NULL,
+                     _("Unicode: \"char\" "
+                       "(codepoint, hex codepoint, UTF-8 sequence): "
+                       "strlen %s/%s "
+                       "utf8_strlen, gui_chat_strlen %s/%s "
+                       "wcswidth, utf8_strlen_screen, gui_chat_strlen_screen:"),
+                     GUI_COLOR(GUI_COLOR_CHAT_DELIMITERS),
+                     GUI_COLOR(GUI_COLOR_CHAT),
+                     GUI_COLOR(GUI_COLOR_CHAT_DELIMITERS),
+                     GUI_COLOR(GUI_COLOR_CHAT));
+
+    ptr_string = string;
+    while (ptr_string && ptr_string[0])
+    {
+        debug_unicode_char (utf8_char_int (ptr_string));
+        ptr_string = utf8_next_char (ptr_string);
+    }
+}
+
+/*
  * Initializes debug.
  */
 
diff --git a/src/core/wee-debug.h b/src/core/wee-debug.h
index dbf2675a8..16351482a 100644
--- a/src/core/wee-debug.h
+++ b/src/core/wee-debug.h
@@ -36,6 +36,7 @@ extern void debug_display_time_elapsed (struct timeval *time1,
                                         struct timeval *time2,
                                         const char *message,
                                         int display);
+extern void debug_unicode_string (const char *string);
 extern void debug_init ();
 extern void debug_end ();