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/***
*** Copyright 1995 Phil Mercurio (mercurio@acm.org)
***
*** Freely distributable for non-commercial purposes.
***/
/**
** rcsFilt
**
** PJM 950331 Begun
** PJM 950412 Reworked data structures
**/
#ifndef rcsFilt_H
#define rcsFilt_H
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fstream.h>
#include <string.h>
/**
** Configuration constants
**/
#define MaxBins (16) // maximum number of color bins
#define MaxLines (50000) // default maximum number of line slots
#define NameSize (256) // size of a file name
#define LineSize (256) // input line buffer size
#define TempPrefix "%" // temp file name prefix
/*
* Information about one line in the source file. These structures
* form a doubly-linked list.
*
* A Line created after the input file has been read is an imaginary
* line, and is indicated by a number of -1.
*
* A Line is marked as being deleted by zeroing its prev and next pointers.
*/
class Line {
public:
class Line* next; // forward link
class Line* prev; // backward link
int age; // age of line, in revisions
int bin; // age bin assigned to line [0..nBins)
int number; // original line number, or -1
/*
* Constructors and destructors
*/
Line() : age(0), bin(0), number(-1), next(0), prev(0) {}
/*
* Methods
*/
bool deleted() {return(prev == 0 && next == 0);}
};
/*
* Main application class
*/
class RcsFilt {
public:
int firstColor; // first color number to use [1..16]
int nBins; // number of bins
int maxLines; // maximum number of lines
bool trunc; // should we truncate or bin?
bool major; // major versions only?
bool newZero; // force age 0 into a bin by itself
bool tempci; // temporarily check in file
bool testAge; // for testing purposes
char path[NameSize]; // source file pathname
char tmpPath[NameSize]; // temporary input file
char rcsPath[NameSize]; // RCS companion to file
char tmpRcsPath[NameSize]; // temporary RCS companion to file
char dir[NameSize]; // directory
char file[NameSize]; // file name portion of path
char buffer[LineSize]; // input line buffer
Line* head; // head of linked list
Line** slot; // array of slots for Lines
Line** stash; // slots for original Lines
int maxAge; // highest age value
int inLines; // number of lines in input
int curLines; // current number of lines
ostream* err; // error output file
/*
* Constructors and destructors
*/
RcsFilt(int, char**); // construct from command-line args
/*
* Methods
*/
void Run();
void findRCS();
void scanSource();
void scanDiffs();
void fakeAges();
void truncBins();
void computeBins();
void outputSource();
bool scanForText(ifstream& in, char* vers);
int scanFirstText(ifstream& in);
bool isVersion(char* buf);
void fillSlots();
Line* findSlot(int);
Line* getSlot(int);
void setSlot(int,Line*);
void processDiffs(ifstream& in);
char parseDiffLine(char* p, int& l, int& n);
bool versionsSame(char* a, char* b);
void ageLines();
void deleteLines(int l, int n);
void appendLines(int l, int n);
void dumpLines();
void tempCheckin();
void tempCleanup();
};
#endif /* rcsFilt_H */
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