add maxLength argument to Input.showRegion()

[sbp.git] / src / edu / berkeley / sbp / chr / CharInput.java

diff --git a/src/edu/berkeley/sbp/chr/CharInput.java b/src/edu/berkeley/sbp/chr/CharInput.java
index 95609bc..3ebbb88 100644 (file)
--- a/src/edu/berkeley/sbp/chr/CharInput.java
+++ b/src/edu/berkeley/sbp/chr/CharInput.java
@@ -59,17 +59,23 @@ public class CharInput extends Cartesian.Input<Character> {
 
     private final RollbackReader r;
     
-    public CharInput(String s)                { this(new StringReader(s)); }
-    public CharInput(Reader r)                { this(r, null); }
-    public CharInput(Reader r,      String s) { this.r = new RollbackReader(new BufferedReader(r)); }
-    public CharInput(InputStream i)           { this(i, null); }
-    public CharInput(InputStream i, String s) { this(new InputStreamReader(i), s); }
+    public CharInput(Reader r,      String s) {
+        this.name = s;
+        this.r = new RollbackReader(new BufferedReader(r));
+    }
+    public CharInput(String s)                  { this(new StringReader(s)); }
+    public CharInput(Reader r)                  { this(r, null); }
+    public CharInput(InputStream i)             { this(i, null); }
+    public CharInput(InputStream i, String s)   { this(new InputStreamReader(i), s); }
+    public CharInput(File f) throws IOException { this(new FileInputStream(f), f.getName()); }
 
     public CharInput(InputStream i, String s, boolean indent) {
         this(new InputStreamReader(i), s);
         this.indent = indent;
     }
+    public String getName() { return name; }
 
+    private String name;
     boolean cr = false;
     boolean indent = false;
     private int count = 0;
@@ -102,10 +108,8 @@ public class CharInput extends Cartesian.Input<Character> {
 
         int i = r.read();
         if (i==-1) {
-            /*System.err.print("\r...done       \r"); */
             if (indent && indentation >= 0) {
                 redent(indentation - lastIndentation);
-                //System.err.println("\r                   \rindent: " + (indentation - lastIndentation));
                 lastIndentation = indentation;
                 indentation = -1;
                 return __next();
@@ -153,7 +157,7 @@ public class CharInput extends Cartesian.Input<Character> {
         if (i>0) { r.unread(CharAtom.left); redent(i-1); return; }
     }
 
-    public String showRegion(Region<Character> rc) {
+    public String showRegion(Region<Character> rc, int maxLength) {
         if (cache == null) return null;
         Cartesian.Region r = (Cartesian.Region)rc;
         int start = r.getStart().getScalar()+1;
@@ -162,10 +166,10 @@ public class CharInput extends Cartesian.Input<Character> {
         if (end < start) end = start;
         if (end > cache.length()) end = cache.length();
         String ret;
-        if (end-start < 60) ret = cachesubstring(start, end);
-        else ret = cachesubstring(start, start+25) +
+        if (end-start < maxLength) ret = cachesubstring(start, end);
+        else ret = cachesubstring(start, start+(maxLength/2-5)) +
                  "..." +
-                 cachesubstring(end-25, end);
+                 cachesubstring(end-(maxLength/2-5), end);
         return StringUtil.escapify(ret, "\n\r");
     }