So I have a tool where users can users upload their SVN .patch files. Rather than downloading and viewing it separately I was hoping if it can be viewed directly online with the red green styling.
The patch file [/uploads/Bug123.patch]
### Eclipse Workspace Patch 1.0
Index: src/main/java/com/admin/Screen.java
===================================================================
--- src/main/java/com/admin/Screen.java (revision 2)
+++ src/main/java/com/admin/Screen.java (working copy)
@@ -147,20 +147,22 @@
- System.out.println("Hello World");
+ System.out.println("Hello New World");
The Viewable [/viewer.php?file=Bug123.patch]
<html>
<style>
.red {
background: lightcoral
}
.green {
background: greenyellow
}
.yellow {
background: yellow;
font-weight: bold
}
</style>
<pre>
### Eclipse Workspace Patch 1.0
Index: src/main/java/com/admin/Screen.java
===================================================================
<span class="yellow">--- src/main/java/com/admin/Screen.java (revision 2)</span>
<span class="yellow">+++ src/main/java/com/admin/Screen.java (working copy)</span>
@@ -147,20 +147,22 @@
<span class="red">- System.out.println("Hello World"); </span>
<span class="green">+ System.out.println("Hello New World"); </span>
</pre>
</html>
Is there a tool to convert patch files to a corresponding html rendering/report for review directly from the browser?
You could try something along the lines of this:
<?php
$file = __DIR__ . '/foo.patch';
echo '<doctype html>
<html>
<head>
<style>
.header {
color: black;
}
.header-comment {
color: grey;
}
.file-input, .file-change {
color: green;
}
.file-output {
color: blue;
}
.file-line-nos {
color: blue;
}
.line-context {
color: darkgrey;
}
.line-add {
color: green;
}
.line-change {
color: yellow;
}
.line-del {
color: red;
}
</style>
</head>
<body>
';
echo PatchParser::file_to_html($file);
echo '</body></html>';
class PatchParser {
const MODE_HEADER = 1;
const MODE_FILE = 2;
const LINE_TYPE_HEADER = 0x0001;
const LINE_TYPE_COMMENT = 0x0002;
const LINE_TYPE_FILE_IN = 0x1001;
const LINE_TYPE_FILE_OUT = 0x1002;
const LINE_TYPE_FILE_CHANGE = 0x1003;
const LINE_TYPE_LINE_NUMBERS = 0x1004;
const LINE_TYPE_CONTEXT = 0x2001;
const LINE_TYPE_ADDITION = 0x2002;
const LINE_TYPE_DELETION = 0x2003;
const LINE_TYPE_CHANGE = 0x2004;
const MARKER_IN_FILE = '+++';
const MARKER_CHANGED_FILE = '***'; // Used for context diffs
const MARKER_OUT_FILE = '---';
const MARKER_FILE_LINE_NUMBERS = '@';
const MARKER_HEADER_COMMENT = '#';
const MARKER_FILE_CHANGE = '!';
const MARKER_FILE_NORMAL_ADDITION = '>';
const MARKER_FILE_NORMAL_DELETION = '<';
const MARKER_FILE_UNIFIED_ADDITION = '+';
const MARKER_FILE_UNIFIED_DELETION = '-';
static public function file_to_html($file){
return self::text_to_html(file_get_contents($file));
}
static public function text_to_html($contents){
$parsed_lines = self::parse($contents);
$classes = array(
self::LINE_TYPE_HEADER => 'header header-text',
self::LINE_TYPE_COMMENT => 'header header-comment',
self::LINE_TYPE_FILE_IN => 'file file-input',
self::LINE_TYPE_FILE_OUT => 'file file-output',
self::LINE_TYPE_FILE_CHANGE => 'file file-change',
self::LINE_TYPE_LINE_NUMBERS => 'file file-line-nos',
self::LINE_TYPE_CONTEXT => 'line line-context',
self::LINE_TYPE_ADDITION => 'line line-add',
self::LINE_TYPE_DELETION => 'line line-del',
self::LINE_TYPE_CHANGE => 'line line-change'
);
$no_lines = count($parsed_lines);
$lines_width = strlen("$no_lines");
$output = '<pre>';
foreach ($parsed_lines AS $line_no => $line){
++$line_no;
$output .= str_pad($line_no, $lines_width, " ", STR_PAD_LEFT)
. ' '
. '<span class="'
. $classes[$line[1]]
. '">'
. htmlspecialchars($line[0])
. '</span><br />';
}
return $output . '</pre>';
}
static public function parse($contents) {
$lines = explode("\n", $contents);
$output = array();
$mode = self::MODE_HEADER;// Stay's in header mode until we encounter a file handle
foreach ($lines AS $line) {
// trim the line to remove excess whitespace, then test the prefix
$trimmed_line = trim($line);
$first_three_chars = substr($trimmed_line,0,3);
// The types that can occur in both modes are the file names/types
if ($first_three_chars === self::MARKER_IN_FILE) {
$output[] = array($line, self::LINE_TYPE_FILE_IN);
$mode = self::MODE_FILE;
continue;
}
if ($first_three_chars === self::MARKER_CHANGED_FILE) {
$output[] = array($line, self::LINE_TYPE_FILE_CHANGE);
$mode = self::MODE_FILE;
continue;
}
if (substr($trimmed_line,0,3) === self::MARKER_OUT_FILE) {
$output[] = array($line, self::LINE_TYPE_FILE_OUT);
$mode = self::MODE_FILE;
continue;
}
// Otherwise our mode is important:
if ($mode === self::MODE_HEADER){
// Header mode only supports header text and comments:
if (substr($trimmed_line, 0, 1) === self::MARKER_HEADER_COMMENT) {
$output[] = array($line, self::LINE_TYPE_COMMENT);
} else {
$output[] = array($line, self::LINE_TYPE_HEADER);
}
continue;
} else {
$first_char = substr($line, 0, 1);
$type = self::LINE_TYPE_CONTEXT;
switch ($first_char) {
case self::MARKER_FILE_CHANGE:
$type = self::LINE_TYPE_CHANGE;
break;
case self::MARKER_FILE_LINE_NUMBERS:
$type = self::LINE_TYPE_LINE_NUMBERS;
break;
case self::MARKER_FILE_NORMAL_ADDITION:
case self::MARKER_FILE_UNIFIED_ADDITION:
$type = self::LINE_TYPE_ADDITION;
break;
case self::MARKER_FILE_NORMAL_DELETION:
case self::MARKER_FILE_UNIFIED_DELETION:
$type = self::LINE_TYPE_DELETION;
break;
}
$output[] = array($line, $type);
}
}
return $output;
}
}
There's a JS fiddle of the output of what I just posted here.
Let me know what you think. It's logic is pretty simple.