ObjFW  Diff

 */

#include "config.h"

#import "OFINICategory.h"
#import "OFINICategory+Private.h"
#import "OFArray.h"
#import "OFCharacterSet.h"
#import "OFStream.h"
#import "OFString.h"

#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"

@interface OFINICategoryPair: OFObject
{
@public
	OFString *_key, *_value;
}
@end

@interface OFINICategoryComment: OFObject
{
@public
	OFString *_comment;
}
@end

static OFCharacterSet *needsEscapeCharacterSet;

static OFString *
escapeString(OFString *string)
{
	OFMutableString *mutableString;


	if (![string hasPrefix: @" "] && ![string hasSuffix: @" "] &&

	    ![string hasPrefix: @"\t"] && ![string hasSuffix: @"\t"] &&
	    [string indexOfCharacterFromSet: needsEscapeCharacterSet] ==
	    OFNotFound)
		return string;

	mutableString = [[string mutableCopy] autorelease];

	[mutableString replaceOccurrencesOfString: @"\\" withString: @"\\\\"];
	[mutableString replaceOccurrencesOfString: @"\f" withString: @"\\f"];
	[mutableString replaceOccurrencesOfString: @"\r" withString: @"\\r"];
	[mutableString replaceOccurrencesOfString: @"\n" withString: @"\\n"];
	[mutableString replaceOccurrencesOfString: @"\"" withString: @"\\\""];

	[mutableString insertString: @"\"" atIndex: 0];
	[mutableString appendString: @"\""];























	[mutableString makeImmutable];

	return mutableString;
}

@implementation OFINICategoryPair
- (void)dealloc

{
	return [[_comment copy] autorelease];
}
@end

@implementation OFINICategory
@synthesize name = _name;

+ (void)initialize
{
	if (self != [OFINICategory class])
		return;

	needsEscapeCharacterSet = [[OFCharacterSet alloc]
	    initWithCharactersInString: @"\r\n\f\"\\="];
}

- (instancetype)of_initWithName: (OFString *)name OF_DIRECT
{
	self = [super init];

	@try {
		_name = [name copy];

- (void)dealloc
{
	[_name release];
	[_lines release];

	[super dealloc];
}

static void
parseQuoted(const char **cString, const char **start, size_t *length)
{
	bool inEscape = false;

	(*cString)++;
	*start = *cString;

	while (**cString != '\0') {
		if (inEscape)
			inEscape = false;
		else {
			if (**cString == '\\')
				inEscape = true;
			else if (**cString == '"')
				break;
		}
		(*cString)++;
	}
	if (**cString == '\0')
		@throw [OFInvalidFormatException exception];

	*length = *cString - *start;

	(*cString)++;

	while (OFASCIIIsSpace(**cString))
		(*cString)++;
}

static void
unescapeMutableString(OFMutableString *string)
{
	[string replaceOccurrencesOfString: @"\\f" withString: @"\f"];
	[string replaceOccurrencesOfString: @"\\r" withString: @"\r"];
	[string replaceOccurrencesOfString: @"\\n" withString: @"\n"];
	[string replaceOccurrencesOfString: @"\\\"" withString: @"\""];
	[string replaceOccurrencesOfString: @"\\\\" withString: @"\\"];
}

- (void)of_parseLine: (OFString *)line
{
	void *pool = objc_autoreleasePoolPush();
	const char *cString = line.UTF8String;
	bool keyIsQuoted = false, valueIsQuoted = false;
	const char *keyStart, *valueStart;
	size_t keyLength, valueLength;
	OFMutableString *key, *value;
	OFINICategoryPair *pair;

	while (OFASCIIIsSpace(*cString))
		cString++;

	if (*cString == ';' || *cString == '#') {
		OFINICategoryComment *comment =
		    [[[OFINICategoryComment alloc] init] autorelease];
		comment->_comment = [line copy];
		[_lines addObject: comment];
		return;
	}

	if (*cString == '"') {
		keyIsQuoted = true;
		parseQuoted(&cString, &keyStart, &keyLength);
	} else {
		keyStart = cString;

		while (*cString != '=' && *cString != '\0')
			cString++;

		keyLength = cString - keyStart;
	}

	if (*cString != '=')
		@throw [OFInvalidFormatException exception];
	cString++;

	while (OFASCIIIsSpace(*cString))
		cString++;

	if (*cString == '"') {
		valueIsQuoted = true;
		parseQuoted(&cString, &valueStart, &valueLength);
	} else {
		valueStart = cString;

		while (*cString != '\0')
			cString++;

		valueLength = cString - valueStart;
	}

	while (*cString != '\0') {
		if (!OFASCIIIsSpace(*cString))
			@throw [OFInvalidFormatException exception];

		cString++;
	}

	key = [OFMutableString stringWithUTF8String: keyStart
					     length: keyLength];
	value = [OFMutableString stringWithUTF8String: valueStart
					       length: valueLength];

	if (keyIsQuoted)
		unescapeMutableString(key);
	else
		[key deleteEnclosingWhitespaces];
	if (valueIsQuoted)
		unescapeMutableString(value);
	else
		[value deleteEnclosingWhitespaces];

	[key makeImmutable];
	[value makeImmutable];

	pair = [[[OFINICategoryPair alloc] init] autorelease];
	pair->_key = [key copy];
	pair->_value = [value copy];
	[_lines addObject: pair];

	objc_autoreleasePoolPop(pool);
}

- (OFString *)stringValueForKey: (OFString *)key
{
	return [self stringValueForKey: key defaultValue: nil];
}

- (bool)of_writeToStream: (OFStream *)stream
		encoding: (OFStringEncoding)encoding
		   first: (bool)first
{
	if (_lines.count == 0)
		return false;

	if (_name.length > 0) {
		if (first)
			[stream writeFormat: @"[%@]\r\n", _name];
		else
			[stream writeFormat: @"\r\n[%@]\r\n", _name];
	}

	for (id line in _lines) {
		if ([line isKindOfClass: [OFINICategoryComment class]]) {
			OFINICategoryComment *comment = line;
			[stream writeFormat: @"%@\r\n", comment->_comment];
		} else if ([line isKindOfClass: [OFINICategoryPair class]]) {
			OFINICategoryPair *pair = line;