ref: 550b95f79cf8022acc5b335f6ef948b32cd2c615
parent: 213b88ef3557f680233c6165b5dc6f2185c0f482
author: Simon Howard <fraggle@gmail.com>
date: Sun Jan 10 20:35:04 EST 2010
When launching a file from the finder, add the new file into the command line at the appropriate position in the command line string. Subversion-branch: /trunk/chocolate-doom Subversion-revision: 1802
--- a/pkg/osx/LauncherManager.m
+++ b/pkg/osx/LauncherManager.m
@@ -61,16 +61,184 @@
}
}
+// Get the next command line argument from the command line.
+// The position counter used to iterate over arguments is in 'pos'.
+// The index of the argument that was found is saved in arg_pos.
+
+static NSString *GetNextArgument(NSString *commandLine, int *pos, int *arg_pos)
+{+ NSRange arg_range;
+
+ // Skip past any whitespace
+
+ while (*pos < [commandLine length]
+ && isspace([commandLine characterAtIndex: *pos]))
+ {+ ++*pos;
+ }
+
+ if (*pos >= [commandLine length])
+ {+ return nil;
+ }
+
+ // We are at the start of the argument. This may be a quoted
+ // string argument, or a "normal" one.
+
+ if ([commandLine characterAtIndex: *pos] == '\"')
+ {+ // Quoted string, skip past first quote
+
+ ++*pos;
+
+ // Save start position:
+
+ *arg_pos = *pos;
+
+ while (*pos < [commandLine length]
+ && [commandLine characterAtIndex: *pos] != '\"')
+ {+ ++*pos;
+ }
+
+ // Unexpected end of string?
+
+ if (*pos >= [commandLine length])
+ {+ return nil;
+ }
+
+ arg_range = NSMakeRange(*arg_pos, *pos - *arg_pos);
+
+ // Skip past last quote
+
+ ++*pos;
+ }
+ else
+ {+ // Normal argument
+
+ // Save position:
+
+ *arg_pos = *pos;
+
+ // Read until end:
+
+ while (*pos < [commandLine length]
+ && !isspace([commandLine characterAtIndex: *pos]))
+ {+ ++*pos;
+ }
+
+ arg_range = NSMakeRange(*arg_pos, *pos - *arg_pos);
+ }
+
+ return [commandLine substringWithRange: arg_range];
+}
+
+// Given the specified command line argument, find the index
+// to insert the new file within the command line. Returns -1 if the
+// argument is not already within the arguments string.
+
+static int GetFileInsertIndex(NSString *commandLine, NSString *needle)
+{+ NSString *arg;
+ int arg_pos;
+ int pos;
+
+ pos = 0;
+
+ // Find the command line parameter we are searching
+ // for (-merge, -deh, etc)
+
+ for (;;)
+ {+ arg = GetNextArgument(commandLine, &pos, &arg_pos);
+
+ // Searched to end of string and never found?
+
+ if (arg == nil)
+ {+ return -1;
+ }
+
+ if (![arg caseInsensitiveCompare: needle])
+ {+ break;
+ }
+ }
+
+ // Now skip over existing files. For example, if we
+ // have -file foo.wad bar.wad, the new file should be appended
+ // to the end of the list.
+
+ for (;;)
+ {+ arg = GetNextArgument(commandLine, &pos, &arg_pos);
+
+ // If we search to the end of the string now, it is fine;
+ // the new string should be added to the end of the command
+ // line. Otherwise, if we find an argument that begins
+ // with '-', it is a new command line parameter and the end
+ // of the list.
+
+ if (arg == nil || [arg characterAtIndex: 0] == '-')
+ {+ break;
+ }
+ }
+
+ // arg_pos should now contain the offset to insert the new filename.
+
+ return arg_pos;
+}
+
- (void) addFileToCommandLine: (NSString *) fileName
forArgument: (NSString *) arg
{- NSString *newCommandLine;
+ NSString *commandLine;
+ int insert_pos;
- newCommandLine = [arg stringByAppendingString: @" \""];
- newCommandLine = [newCommandLine stringByAppendingString: fileName];
- newCommandLine = [newCommandLine stringByAppendingString: @"\""];
+ // Get the current command line
- [self->commandLineArguments setStringValue: newCommandLine];
+ commandLine = [self->commandLineArguments stringValue];
+
+ // Find the location to insert the new filename:
+
+ insert_pos = GetFileInsertIndex(commandLine, arg);
+
+ // If position < 0, we should add the new argument and filename
+ // to the end. Otherwise, append the new filename to the existing
+ // list of files.
+
+ if (insert_pos < 0)
+ {+ commandLine = [commandLine stringByAppendingString: @" "];
+ commandLine = [commandLine stringByAppendingString: arg];
+
+ commandLine = [commandLine stringByAppendingString: @" \""];
+ commandLine = [commandLine stringByAppendingString: fileName];
+ commandLine = [commandLine stringByAppendingString: @"\""];
+ }
+ else
+ {+ NSString *start;
+ NSString *end;
+
+ // Divide existing command line in half:
+
+ start = [commandLine substringToIndex: insert_pos];
+ end = [commandLine substringFromIndex: insert_pos];
+
+ // Construct new command line:
+
+ commandLine = [start stringByAppendingString: @" \""];
+ commandLine = [commandLine stringByAppendingString: fileName];
+ commandLine = [commandLine stringByAppendingString: @"\" "];
+ commandLine = [commandLine stringByAppendingString: end];
+ }
+
+ [self->commandLineArguments setStringValue: commandLine];
}
- (void) launch: (id)sender