1 files changed, 136 insertions, 0 deletions
diff --git a/src/unicoderange.cpp b/src/unicoderange.cpp
new file mode 100644
index 0000000..237fac7
--- /dev/null
+++ b/src/unicoderange.cpp
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#include "unicoderange.h"
+
+#include <cstdlib>
+#include <cstring>
+
+static unsigned int hex2int(char* s){
+    int res=0;
+    int i=0, mul=1;
+    while(s[i+1]!='\0') i++;
+
+    while(i>=0){
+        if (s[i] >= 'A' && s[i] <= 'F') res += mul * (s[i]-'A'+10);
+        if (s[i] >= 'a' && s[i] <= 'f') res += mul * (s[i]-'a'+10);
+        if (s[i] >= '0' && s[i] <= '9') res += mul * (s[i]-'0');
+        i--;
+        mul*=16;
+    }
+    return res;
+}
+
+UnicodeRange::UnicodeRange(const gchar* value){
+    if (!value) return;
+    gchar* val = (gchar*) value;
+    while(val[0] != '\0'){
+        if (val[0]=='U' && val[1]=='+'){
+            val += add_range(val+2);
+        } else {
+            this->unichars.push_back(g_utf8_get_char(&val[0]));
+            val = g_utf8_next_char(val);
+        }
+        //skip spaces or commas
+        while(val[0]==' ' || val[0]==',') val++;
+    }
+}
+
+int UnicodeRange::add_range(gchar* val){
+        Urange r;
+        int i=0, count=0;
+        while(val[i]!='\0' && val[i]!='-' && val[i]!=' ' && val[i]!=','){
+            i++;
+        }
+        r.start = (gchar*) malloc((i+1)*sizeof(gchar));
+        strncpy(r.start, val, i);
+        r.start[i] = '\0';
+        val+=i;
+        count+=i;
+        i=0;
+        if (val[0]=='-'){
+            val++;
+            while(val[i]!='\0' && val[i]!='-' && val[i]!=' ' && val[i]!=',') i++;
+            r.end = (gchar*) malloc((i+1)*sizeof(gchar));
+            strncpy(r.end, val, i);
+            r.end[i] = '\0';
+            // val+=i;
+            count+=i;
+        } else {
+            r.end=nullptr;
+        }
+        this->range.push_back(r);
+        return count+1;
+}
+
+bool UnicodeRange::contains(gchar unicode){
+    for(unsigned int unichar : this->unichars){
+        if (static_cast<gunichar>(unicode) == unichar){
+            return true;
+        }
+    }
+
+    unsigned int unival;
+    unival = g_utf8_get_char (&unicode);
+    char uni[9] = "00000000";
+    uni[8]= '\0';
+    for (unsigned int i=7; unival>0; i--){
+        unsigned char val = unival & 0xf;
+        unival = unival >> 4;
+        if (val < 10) uni[i] = '0' + val;
+        else uni[i] = 'A'+ val - 10;
+    }
+
+    bool found;
+    for(auto r : this->range){
+        if (r.end){
+            if (unival >= hex2int(r.start) && unival <= hex2int(r.end)) return true;
+        } else {
+            found = true;
+
+            int p=0;
+            while (r.start[p]!='\0') p++;
+            p--;
+
+            for (int pos=8;p>=0;pos--,p--){
+                if (uni[pos]!='?' && uni[pos]!=r.start[p]) found = false;
+            }
+            if (found) return true;
+        }
+    }
+    return false;
+}
+
+Glib::ustring UnicodeRange::attribute_string(){
+    Glib::ustring result;
+    unsigned int i;
+    for(i=0; i<this->unichars.size(); i++){
+// g_warning("uni: %d %x", i, unichars[i]);
+        result += this->unichars[i];
+        if (i!=this->unichars.size()-1) result += ",";
+    }
+
+    for(i=0; i<this->range.size(); i++){
+        result += "U+" + Glib::ustring(this->range[i].start);
+        if (this->range[i].end) result += "-" + Glib::ustring(this->range[i].end);
+        if (i!=this->range.size()-1) result += ", ";
+    }
+
+    return result;
+}
+
+gunichar UnicodeRange::sample_glyph(){
+    //This could be better
+    if (!unichars.empty())
+        return unichars[0];
+    if (!range.empty())
+        return hex2int(range[0].start);
+    return (gunichar) ' ';
+}
+