Add:Core:New module linguistics to cope with language specialities

git-svn-id: http://svn.code.sf.net/p/navit/code/trunk/navit@2359 ffa7fe5e-494d-0410-b361-a75ebd5db220

1 files changed, 74 insertions, 0 deletions

diff --git a/navit/linguistics.c b/navit/linguistics.c
new file mode 100644
index 00000000..0fb11c08
--- /dev/null
+++ b/navit/linguistics.c
@@ -0,0 +1,74 @@
+#include <string.h>
+#include <stdio.h>
+#include <glib.h>
+#include "debug.h"
+#include "linguistics.h"
+
+static const char *special[][3]={
+{"Ä","A","AE"},
+{"Ö","O","OE"},
+{"Ü","U","UE"},
+{"Ő","O"},
+{"Ű","U"},
+{"Á","A"},
+{"É","E"},
+{"Í","I"},
+{"Ó","O"},
+{"Ú","U"},
+{"ä","a","ae"},
+{"ö","o","oe"},
+{"ü","u","ue"},
+{"ő","o"},
+{"ű","u"},
+{"á","a"},
+{"é","e"},
+{"í","i"},
+{"ó","o"},
+{"ú","u"},
+{"ß","s","ss"},
+};
+
+char *
+linguistics_expand_special(char *str, int mode)
+{
+	char *in=str;
+	char *out,*ret;
+	int found=0;
+	out=ret=g_strdup(str);
+	mode++;
+	while (*in) {
+		char *next=g_utf8_find_next_char(in, NULL);
+		int i,len=next-in;
+		int match=0;
+		if (len > 1) {
+			for (i = 0 ; i < sizeof(special)/sizeof(special[0]); i++) {
+				const char *search=special[i][0];
+				if (!strncmp(in,search,len)) {
+					const char *replace=special[i][mode];
+					if (replace) {
+						int replace_len=strlen(replace);
+						dbg_assert(replace_len <= len);
+						dbg(1,"found %s %s %s\n",in,search,replace);
+						strcpy(out, replace);
+						out+=replace_len;
+						match=1;
+						break;
+					}
+				}
+			}
+			in=next;
+		}
+		if (match) 
+			found=1;
+		else {	
+			while (len-- > 0) 
+				*out++=*in++;
+		}
+	}
+	*out++='\0';
+	if (!found) {
+		g_free(ret);
+		ret=NULL;
+	}
+	return ret;
+}