reorganizing the repository

[project-aon.git] / common / scripts / diff2html.sh
diff --git a/common/scripts/diff2html.sh b/common/scripts/diff2html.sh

new file mode 100755 (executable)

index 0000000..8e0c0a7
--- /dev/null
+++ b/common/scripts/diff2html.sh
@@ -0,0 +1,124 @@
+#!/bin/bash
+#
+# Convert diff output to colorized HTML.
+#
+# (http://www.linuxjournal.com/content/convert-diff-output-colorized-html)
+
+cat <<XX
+<html>
+<head>
+<title>Colorized Diff</title>
+</head>
+<style>
+.diffdiv  { border: solid 1px black;           }
+.comment  { color: gray;                       }
+.diff     { color: #8A2BE2;                    }
+.minus3   { color: blue;                       }
+.plus3    { color: maroon;                     }
+.at2      { color: lime;                       }
+.plus     { color: green; background: #E7E7E7; }
+.minus    { color: red;   background: #D7D7D7; }
+.only     { color: purple;                     }
+</style>
+<body>
+<pre>
+XX
+
+echo -n '<span class="comment">'
+
+first=1
+diffseen=0
+lastonly=0
+
+OIFS=$IFS
+IFS='
+'
+
+# The -r option keeps the backslash from being an escape char.
+read -r s
+
+while [[ $? -eq 0 ]]
+do
+    # Get beginning of line to determine what type
+    # of diff line it is.
+    t1=${s:0:1}
+    t2=${s:0:2}
+    t3=${s:0:3}
+    t4=${s:0:4}
+    t7=${s:0:7}
+
+    # Determine HTML class to use.
+    if    [[ "$t7" == 'Only in' ]]; then
+        cls='only'
+        if [[ $diffseen -eq 0 ]]; then
+            diffseen=1
+            echo -n '</span>'
+        else
+            if [[ $lastonly -eq 0 ]]; then
+                echo "</div>"
+            fi
+        fi
+        if [[ $lastonly -eq 0 ]]; then
+            echo "<div class='diffdiv'>"
+        fi
+        lastonly=1
+    elif [[ "$t4" == 'diff' ]]; then
+        cls='diff'
+        if [[ $diffseen -eq 0 ]]; then
+            diffseen=1
+            echo -n '</span>'
+        else
+            echo "</div>"
+        fi
+        echo "<div class='diffdiv'>"
+        lastonly=0
+    elif  [[ "$t3" == '+++'  ]]; then
+        cls='plus3'
+        lastonly=0
+    elif  [[ "$t3" == '---'  ]]; then
+        cls='minus3'
+        lastonly=0
+    elif  [[ "$t2" == '@@'   ]]; then
+        cls='at2'
+        lastonly=0
+    elif  [[ "$t1" == '+'    ]]; then
+        cls='plus'
+        lastonly=0
+    elif  [[ "$t1" == '-'    ]]; then
+        cls='minus'
+        lastonly=0
+    else
+        cls=
+        lastonly=0
+    fi
+
+    # Convert &, <, > to HTML entities.
+    s=$(sed -e 's/\&/\&amp;/g' -e 's/</\&lt;/g' -e 's/>/\&gt;/g' <<<"$s")
+    if [[ $first -eq 1 ]]; then
+        first=0
+    else
+        echo
+    fi
+
+    # Output the line.
+    if [[ "$cls" ]]; then
+        echo -n '<span class="'${cls}'">'${s}'</span>'
+    else
+        echo -n ${s}
+    fi
+    read -r s
+done
+IFS=$OIFS
+
+if [[ $diffseen -eq 0  &&  $onlyseen -eq 0 ]]; then 
+    echo -n '</span>'
+else
+    echo "</div>"
+fi
+echo
+
+cat <<XX
+</pre>
+</body>
+</html>
+XX