X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fcharset.c;h=61a34cbcf449a6dd0eb870cfc9dd239d83109cf5;hb=3af5c3a185fc23b8fb9d528a9c0a14f70093ac70;hp=b948636f03c57e4ab31789ab42c02c535bb1058a;hpb=c39eb2cdf399c740c24884997364cf84c64fd46b;p=ncmpc.git

diff --git a/src/charset.c b/src/charset.c
index b948636..61a34cb 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -1,6 +1,6 @@
-/*
- * (c) 2006 by Kalle Wallin <kaw@linux.se>
- * Copyright (C) 2008 Max Kellermann <max@duempel.org>
+/* ncmpc (Ncurses MPD Client)
+ * (c) 2004-2017 The Music Player Daemon Project
+ * Project homepage: http://musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -11,10 +11,10 @@
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #include "charset.h"
@@ -32,16 +32,32 @@ charset_init(void)
 {
 	noconvert = g_get_charset(&charset);
 	return charset;
-	return NULL;
 }
 #endif
 
+#ifdef HAVE_CURSES_ENHANCED
+static inline unsigned
+unicode_char_width(gunichar ch)
+{
+	if (g_unichar_iszerowidth(ch))
+		return 0;
+
+	if (g_unichar_iswide(ch))
+		return 2;
+
+	return 1;
+}
+#endif /* HAVE_CURSES_ENHANCED */
+
 unsigned
 utf8_width(const char *str)
 {
 	assert(str != NULL);
 
-#ifdef ENABLE_WIDE
+#if defined(ENABLE_MULTIBYTE) && !defined(HAVE_CURSES_ENHANCED)
+	return g_utf8_strlen(str, -1);
+#else
+#ifdef HAVE_CURSES_ENHANCED
 	if (g_utf8_validate(str, -1, NULL)) {
 		size_t len = g_utf8_strlen(str, -1);
 		unsigned width = 0;
@@ -49,7 +65,7 @@ utf8_width(const char *str)
 
 		while (len--) {
 			c = g_utf8_get_char(str);
-			width += g_unichar_iswide(c) ? 2 : 1;
+			width += unicode_char_width(c);
 			str += g_unichar_to_utf8(c, NULL);
 		}
 
@@ -57,22 +73,105 @@ utf8_width(const char *str)
 	} else
 #endif
 		return strlen(str);
+#endif
+}
+
+unsigned
+locale_width(const char *p)
+{
+#if defined(ENABLE_LOCALE) && defined(ENABLE_MULTIBYTE)
+	char *utf8;
+	unsigned width;
+
+	if (noconvert)
+		return utf8_width(p);
+
+	utf8 = locale_to_utf8(p);
+	width = utf8_width(utf8);
+	g_free(utf8);
+
+	return width;
+#else
+	return strlen(p);
+#endif
+}
+
+gcc_unused
+static unsigned
+ascii_cut_width(char *p, unsigned max_width)
+{
+	size_t length = strlen(p);
+	if (length <= (size_t)max_width)
+		return (unsigned)length;
+
+	p[max_width] = 0;
+	return max_width;
+}
+
+gcc_unused
+static unsigned
+narrow_cut_width(char *p, unsigned max_width)
+{
+	size_t length = g_utf8_strlen(p, -1);
+	if (length <= (size_t)max_width)
+		return (unsigned)length;
+
+	*g_utf8_offset_to_pointer(p, max_width) = 0;
+	return max_width;
+}
+
+gcc_unused
+static unsigned
+wide_cut_width(char *p, unsigned max_width)
+{
+	size_t length = g_utf8_strlen(p, -1);
+	unsigned width = 0, prev_width;
+
+	while (length-- > 0) {
+		gunichar c = g_utf8_get_char(p);
+		prev_width = width;
+		width += g_unichar_iswide(c) ? 2 : 1;
+		if (width > max_width) {
+			/* too wide - cut the rest off */
+			*p = 0;
+			return prev_width;
+		}
+
+		p += g_unichar_to_utf8(c, NULL);
+	}
+
+	return width;
+}
+
+unsigned
+utf8_cut_width(char *p, unsigned max_width)
+{
+	assert(p != NULL);
+
+#ifdef HAVE_CURSES_ENHANCED
+	if (!g_utf8_validate(p, -1, NULL))
+		return ascii_cut_width(p, max_width);
+
+	return wide_cut_width(p, max_width);
+#elif defined(ENABLE_MULTIBYTE) && !defined(HAVE_CURSES_ENHANCED)
+	return narrow_cut_width(p, max_width);
+#else
+	return ascii_cut_width(p, max_width);
+#endif
 }
 
 char *
 utf8_to_locale(const char *utf8str)
 {
 #ifdef ENABLE_LOCALE
-	gchar *str;
-
 	assert(utf8str != NULL);
 
 	if (noconvert)
 		return g_strdup(utf8str);
 
-	str = g_convert_with_fallback(utf8str, -1,
-				      charset, "utf-8",
-				      NULL, NULL, NULL, NULL);
+	gchar *str = g_convert_with_fallback(utf8str, -1,
+					     charset, "utf-8",
+					     NULL, NULL, NULL, NULL);
 	if (str == NULL)
 		return g_strdup(utf8str);
 
@@ -86,16 +185,14 @@ char *
 locale_to_utf8(const char *localestr)
 {
 #ifdef ENABLE_LOCALE
-	gchar *str;
-
 	assert(localestr != NULL);
 
 	if (noconvert)
 		return g_strdup(localestr);
 
-	str = g_convert_with_fallback(localestr, -1,
-				      "utf-8", charset,
-				      NULL, NULL, NULL, NULL);
+	gchar *str = g_convert_with_fallback(localestr, -1,
+					     "utf-8", charset,
+					     NULL, NULL, NULL, NULL);
 	if (str == NULL)
 		return g_strdup(localestr);
 
@@ -104,3 +201,34 @@ locale_to_utf8(const char *localestr)
 	return g_strdup(localestr);
 #endif
 }
+
+char *
+replace_utf8_to_locale(char *src)
+{
+#ifdef ENABLE_LOCALE
+	assert(src != NULL);
+
+	if (noconvert)
+		return src;
+
+	return utf8_to_locale(src);
+#else
+	return src;
+#endif
+}
+
+
+char *
+replace_locale_to_utf8(char *src)
+{
+#ifdef ENABLE_LOCALE
+	assert(src != NULL);
+
+	if (noconvert)
+		return src;
+
+	return locale_to_utf8(src);
+#else
+	return src;
+#endif
+}