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#import "NSString+template.h" | |
@implementation NSString (template) | |
+(NSString*)stringWithTemplate:(NSString*)template | |
fromMap:(NSDictionary*)map | |
{ | |
NSString* retStr = nil; | |
NSMutableString* buffer = [NSMutableString new]; | |
NSScanner* scanner = [[NSScanner alloc] initWithString:template]; | |
NSString* tempString = nil; | |
while([scanner scanUpToString:@"$[" intoString:&tempString]) | |
{ | |
NSString* key = nil; | |
NSString* value = nil; | |
[buffer appendString:tempString]; | |
if([scanner isAtEnd]) | |
{ | |
break; | |
} | |
[scanner scanString:@"$[" intoString:nil]; | |
[scanner scanUpToString:@"]" intoString:&key]; | |
[scanner scanString:@"]" intoString:nil]; | |
if(key) | |
{ | |
value = [map objectForKey:key]; | |
} | |
if(value) | |
{ | |
[buffer appendString:value]; | |
} | |
else | |
{ | |
[buffer appendFormat:@"$[%@]", key]; | |
} | |
} | |
retStr = [NSString stringWithString:buffer]; | |
[buffer release]; | |
[scanner release]; | |
return retStr; | |
} | |
@end |
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#import <Foundation/Foundation.h> | |
@interface NSString (template) | |
+(NSString*)stringWithTemplate:(NSString*)template | |
fromMap:(NSDictionary*)map; | |
@end |
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- (void)test | |
{ | |
NSString* testTemplate = @"Hello $[name], welcome to $[city]."; | |
NSString* testString = | |
[NSString stringWithTemplate:testTemplate | |
fromMap:[NSDictionary dictionaryWithObjectsAndKeys: | |
@"Popcorny", @"name" | |
@"Taipei", @"city", | |
nil]]; | |
NSLog(@"%@", testString); | |
} |
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