using UnityEngine;
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using UnityEditor;
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using System.Text;
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/// <summary>
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/// Helper class that takes care of loading BMFont's glyph information from the specified byte array.
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/// This functionality is not a part of BMFont anymore because Flash export option can't handle System.IO functions.
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/// </summary>
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public static class CustomFontReader {
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/// <summary>
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/// Helper function that retrieves the string value of the key=value pair.
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/// </summary>
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static string GetString (string s) {
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int idx = s.IndexOf('=');
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return (idx == -1) ? "" : s.Substring(idx + 1);
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}
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/// <summary>
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/// Helper function that retrieves the integer value of the key=value pair.
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/// </summary>
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static int GetInt (string s) {
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int val = 0;
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string text = GetString(s);
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#if UNITY_FLASH
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try { val = int.Parse(text); } catch (System.Exception) { }
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#else
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int.TryParse(text, out val);
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#endif
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return val;
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}
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/// <summary>
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/// Reload the font data.
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/// </summary>
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static public void Load (BMFont font, string name, byte[] bytes) {
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font.Clear();
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if (bytes != null) {
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ByteReader reader = new ByteReader(bytes);
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char[] separator = new char[] { ' ' };
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while (reader.canRead) {
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string line = reader.ReadLine();
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if (string.IsNullOrEmpty(line))
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break;
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string[] split = line.Split(separator, System.StringSplitOptions.RemoveEmptyEntries);
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int len = split.Length;
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if (split[0] == "char") {
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// Expected data style:
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// char id=13 x=506 y=62 width=3 height=3 xoffset=-1 yoffset=50 xadvance=0 page=0 chnl=15
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int channel = (len > 10) ? GetInt(split[10]) : 15;
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if (len > 9 && GetInt(split[9]) > 0) {
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Debug.LogError("Your font was exported with more than one texture. Only one texture is supported by NGUI.\n" +
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"You need to re-export your font, enlarging the texture's dimensions until everything fits into just one texture.");
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break;
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}
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if (len > 8) {
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int id = GetInt(split[1]);
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BMGlyph glyph = font.GetGlyph(id, true);
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if (glyph != null) {
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glyph.x = GetInt(split[2]);
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glyph.y = GetInt(split[3]);
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glyph.width = GetInt(split[4]);
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glyph.height = GetInt(split[5]);
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glyph.offsetX = GetInt(split[6]);
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glyph.offsetY = GetInt(split[7]);
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glyph.advance = GetInt(split[8]);
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glyph.channel = channel;
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}
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else
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Debug.Log("Char: " + split[1] + " (" + id + ") is NULL");
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}
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else {
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Debug.LogError("Unexpected number of entries for the 'char' field (" + name + ", " + split.Length + "):\n" + line);
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break;
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}
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}
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else if (split[0] == "kerning") {
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// Expected data style:
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// kerning first=84 second=244 amount=-5
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if (len > 3) {
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int first = GetInt(split[1]);
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int second = GetInt(split[2]);
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int amount = GetInt(split[3]);
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BMGlyph glyph = font.GetGlyph(second, true);
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if (glyph != null)
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glyph.SetKerning(first, amount);
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}
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else {
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Debug.LogError("Unexpected number of entries for the 'kerning' field (" +
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name + ", " + split.Length + "):\n" + line);
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break;
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}
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}
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else if (split[0] == "common") {
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// Expected data style:
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// common lineHeight=64 base=51 scaleW=512 scaleH=512 pages=1 packed=0 alphaChnl=1 redChnl=4 greenChnl=4 blueChnl=4
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if (len > 5) {
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font.charSize = GetInt(split[1]);
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font.baseOffset = GetInt(split[2]);
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font.texWidth = GetInt(split[3]);
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font.texHeight = GetInt(split[4]);
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int pages = GetInt(split[5]);
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if (pages != 1) {
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Debug.LogError("Font '" + name + "' must be created with only 1 texture, not " + pages);
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break;
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}
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}
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else {
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Debug.LogError("Unexpected number of entries for the 'common' field (" +
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name + ", " + split.Length + "):\n" + line);
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break;
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}
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}
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else if (split[0] == "page") {
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// Expected data style:
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// page id=0 file="textureName.png"
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if (len > 2) {
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font.spriteName = GetString(split[2]).Replace("\"", "");
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font.spriteName = font.spriteName.Replace(".png", "");
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font.spriteName = font.spriteName.Replace(".tga", "");
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}
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}
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}
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}
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}
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}
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