Extract

Extract is a software management tool which allows the user to store different versions of the same code or several related codes in one file. Interleaving of routines allows the user to have code such that when one version is updated, all versions are changed. Many capabilities of C's preprocessor are emulated, but the code produced by extract is much more readable. Extract also has some scripting abilities not present in cpp, such as looping, if structures, and integer arithmetic. The code developer keeps code in basefiles but gives the extracted files to users. A successful use of extract will result in files that no one can tell came from extract.

• 3/01/01: Corrected file inheritence error I introduced in last fix.
• 2/20/01: Corrected seg fault when -o refers to nonexistant directory
• 2/07/01: Added @(@) for escape sequence for @

• Fixed bug in sticky space for @multidef & @whiledef

• Fixed problem associated with use of -addkeys flag
• Fixed problem with @declare not freeing memory when sorting

• Added support for -langM, so @declare could be used in makefiles
• Fixed problem with @declare leaving extra whitespace on end of line

• Added @echo command
• Added -multidef for commandline extract
• Ensured that extracted files do not effect key state in file they are extracted from
• Rewrote code for greater efficiency

• Added @addkeys and @killkeys commands
• Added sticky space (@^) to @multidef, @whiledef, and @declare
• Removed "" meaning one argument to @multidef and @whiledef
• Made error reporting print out entire stack of input files, rather than just most recent input file
• Made it so extract does not warn you when it truncates a macro due to user formatting
• Fixed bug in @undefall noticed by Andy: it only worked for lower case macro handles